.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,34 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: "[BUG]<Enter comprehensive title>"
+labels: bug
+assignees: ''
+
+---
+<!--
+Please, before you create a new bug report, please make sure you searched in open and closed issues and couldn't find anything that matches.
+-->
+**Printer type** - [e.g. MK3S, MK3, MK2.5S, MK2.5, MK2S, MK2]
+**Printer firmware version** -  [e.g. 3.8.1, 3.8.1-RC1, ...]
+
+**MMU upgrade** - [e.g. MMU2S, MMU2, MMU1]
+**MMU upgrade firmware version** - [e.g. 1.0.6, 1.0.6-RC2, ...]
+
+**SD card or USB/Octoprint**
+  Please let us know if you print via SD card or USB/Octoprint
+
+**Describe the bug**
+  A clear and concise description of what the bug is.
+  
+**To Reproduce**
+  Please describe steps to reproduce the behavior.
+  
+**Expected behavior**
+  A clear and concise description of what you expected to happen.
+  
+**G-code**
+  Please attach a G-code. This will make it easier for us to replicate the error.
+
+**Video**
+  Please attach a video. It usually helps to solve the problem.

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,96 +0,0 @@
-name: Bug report
-description: File a bug report
-title: '[BUG] '
-labels:
-  - bug
-body:
-  - type: markdown
-    attributes:
-      value: |
-        Before you create a new bug report, please check if an issue with it already exists (either open or closed) by using the search bar on the issues page. If it does, comment there. Even if it's closed, we can reopen it based on your comment.
-  - type: dropdown
-    id: printer_model
-    attributes:
-      label: Printer model
-      description: Enter the printer model(s) where you encountered the issue
-      options:
-        - MK3S/+
-        - MK3
-        - MK2.5S
-        - MK2.5
-    validations:
-      required: true
-  - type: dropdown
-    id: mmu_model
-    attributes:
-      label: MMU model
-      description: Enter the MMU model(s) where you encountered the issue
-      multiple: false
-      options:
-        - No-MMU
-        - MMU3
-        - MMU2S
-    validations:
-      required: true
-  - type: input
-    id: firmware_version
-    attributes:
-      label: Firmware versions
-      description: |
-        If you're using a custom firmware (not downloaded from Prusa), please note that!
-      placeholder: '3.14.0, 3.12.0-RC1, 3.14.0 and 3.0.2...'
-    validations:
-      required: true
-  - type: input
-    id: optional_upgrades
-    attributes:
-      label: Upgrades and modifications
-      description: 'If your printer has upgrades or was modified, please note that!  If not, please write None or leave blank.'
-      placeholder: |
-        None, custom extruder/hotend (which), different frame, ...
-  - type: dropdown
-    id: printing_from
-    attributes:
-      label: Printing from...
-      multiple: false
-      options:
-        - SD Card
-        - PrusaLink
-        - PrusaConnect
-        - OctoPrint
-        - Other host software
-    validations:
-      required: true
-  - type: textarea
-    id: description
-    attributes:
-      label: Describe the bug
-      description: Write a concise description of the bug.
-    validations:
-      required: true
-  - type: textarea
-    id: reproduction
-    attributes:
-      label: How to reproduce
-      description: |
-        If you are able to reproduce the issue - meaning that you can trigger it yourself by following certain steps - please describe the step-by-step process in as much detail as possible!
-  - type: textarea
-    id: expected_behavior
-    attributes:
-      label: Expected behavior
-      description: |
-        If the printer did something unexpected, or if the procedure is missing a step that would resolve the issue, please provide a step-by-step process of how it should behave.
-  - type: textarea
-    id: files
-    attributes:
-      label: Files
-      description: |
-        Provide at least one of these (ideally as many as you can) to help developers track down the bug.
-        *To upload files, compress them into a .zip file and drag them to the text area to upload.* Images and videos can be uploaded directly.
-
-        - **gcode** file
-        - **3mf project** which includes the model and printer settings
-        - **video** or **photos** of the issue happening
-
-        **Crash dump: Do not share the file publicly**, as the crash dump contains a raw snapshot of the printer's memory and may include unencrypted sensitive information.
-        Please send the crash dump file to Prusa by emailing it to reports@prusa3d.com and referencing this issue. In reply to the email, you will be automatically assigned a reference code to be mentioned in the issue. Sharing this file is important and helps us investigate the bug.

.github/ISSUE_TEMPLATE/community.md

@@ -0,0 +1,17 @@
+---
+name: Community
+about: Related to "Community made" features
+title: "[Community made] <Enter comprehensive title>"
+labels: community_made
+assignees: ''
+
+---
+
+Prusa Research will NOT follow up these issues!
+The maintainers of the "Community made" feature should/will react.
+
+Please, before you create a new "Community made" ticket, please make sure you searched in open and closed issues and couldn't find anything that matches.
+
+**Which Community made feature do you want to address?**
+
+**What is your request/question/suggestion?**

.github/ISSUE_TEMPLATE/community.yml

@@ -1,25 +0,0 @@
-name: Community
-description: Related to "Community made" features
-title: '[Community made] '
-labels:
-  - community_made
-body:
-  - type: markdown
-    attributes:
-      value: >
-        Prusa Research will NOT follow up these issues!
-        The maintainers of the "Community made" feature should/will react.
-
-        Please, before you create a new "Community made" ticket, please make sure you searched in open and closed issues and couldn't find anything that matches.
-  - type: textarea
-    id: which_community
-    attributes:
-      label: Which Community made feature do you want to address?
-    validations:
-      required: true
-  - type: textarea
-    id: What_about_community
-    attributes:
-      label: What is your request/question/suggestion?
-    validations:
-      required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -1,11 +0,0 @@
-contact_links:
-  - name: Do you need Support?
-    url: https://help.prusa3d.com/article/customer-support_2287
-    about: If you are not sure whether what you are reporting is a bug, please contact our support team first. We are providing full 24/7 customer support.
-  - name: Knowledge Base
-    url: https://help.prusa3d.com/
-    about: We have a comprehensive help documentation that could be helpful for troubleshooting.
-  - name: Prusa Forum
-    url: https://forum.prusa3d.com/
-    about: Please get in touch on our Prusa Forum! (Not an official support channel)
-blank_issues_enabled: false

.github/ISSUE_TEMPLATE/enhancement.md

@@ -0,0 +1,20 @@
+---
+name: Enhancement
+about: Suggest an idea for this project
+title: "  [ENHANCEMENT]<Enter comprehensive title>"
+labels: enhancement
+assignees: ''
+
+---
+
+Please, before you create a new feature request, please make sure you searched in open and closed issues and couldn't find anything that matches.
+
+Enter what type of printer or upgrade the enhancement applies to.
+**Printer type** - [e.g. MK3S, MK3, MK2.5S, MK2.5, MK2S, MK2]
+**MMU Upgrade** - [e.g. MMU2S, MMU2, MMU1]
+
+**Is your enhancement related to a problem? Please describe.**
+  A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+  
+**Describe the solution you'd like**
+  A clear and concise description of what you want to happen.

.github/ISSUE_TEMPLATE/enhancement.yml

@@ -1,35 +0,0 @@
-name: Enhancement
-description: Suggest an improvement of the existing functionality
-title: '[ENHANCEMENT] '
-labels:
-  - enhancement
-body:
-  - type: markdown
-    attributes:
-      value: |
-        Before you create a new enhancement, please check if an issue with it already exists (either open or closed) by using the search bar on the issues page.
-  - type: checkboxes
-    id: printer_model
-    attributes:
-      label: Printer model
-      description: Select the printer model(s) where you would like this enhancement
-      options:
-        - label: MK3S/+
-        - label: MK3
-        - label: MK2.5S
-        - label: MK2.5
-    validations:
-      required: true
-  - type: textarea
-    id: description
-    attributes:
-      label: Describe the enhancement
-      description: How would this enhancement improve your experience? Do you have a specific use case where this enhancemnet is especially needed?
-    validations:
-      required: true
-  - type: textarea
-    id: expected_functionality
-    attributes:
-      label: Expected functionality
-      description: |
-        Describe the way the enhancement would change existing functionality. You can also describe it in a step-by-step basis if applicable.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: "[FEATURE REQUEST]<Enter comprehensive title>"
+labels: feature request
+assignees: ''
+
+---
+
+Please, before you create a new feature request, please make sure you searched in open and closed issues and couldn't find anything that matches.
+
+If it makes sense, enter what type of printer or upgrade the feature request applies to.
+**Printer type** - [e.g. MK3S, MK3, MK2.5S, MK2.5, MK2S, MK2]
+**MMU Upgrade** - [e.g. MMU2S, MMU2, MMU1]
+
+**Is your feature request related to a problem? Please describe.**
+  A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+  
+**Describe the solution you'd like**
+  A clear and concise description of what you want to happen.

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -1,35 +0,0 @@
-name: Feature request
-description: Suggest new functionality
-title: '[FEATURE REQUEST] '
-labels:
-  - feature request
-body:
-  - type: markdown
-    attributes:
-      value: |
-        Before you create a new feature request, please check if an issue with it already exists (either open or closed) by using the search bar on the issues page.
-  - type: checkboxes
-    id: printer_model
-    attributes:
-      label: Printer model
-      description: Select the printer model(s) where you would like this feature
-      options:
-        - label: MK3S/+
-        - label: MK3
-        - label: MK2.5S
-        - label: MK2.5
-    validations:
-      required: true
-  - type: textarea
-    id: description
-    attributes:
-      label: Describe the feature
-      description: How would this feature improve the printer? Are there specific use cases where this would be beneficial? Describe how you would use it.
-    validations:
-      required: true
-  - type: textarea
-    id: expected_functionality
-    attributes:
-      label: Expected functionality
-      description: |
-        Describe the way the feature would work. You can also describe it in a step-by-step basis if applicable.

.github/ISSUE_TEMPLATE/question.md

@@ -0,0 +1,12 @@
+---
+name: Question
+about: What do you want to know?
+title: "[QUESTION]<Enter comprehensive title>"
+labels: question
+assignees: ''
+
+---
+
+Please, before you create a new question, please make sure you searched in open and closed issues and couldn't find anything that matches.
+
+**What is your question?**

.github/ISSUE_TEMPLATE/question.yml

@@ -1,16 +0,0 @@
-name: Question
-description: Ask a firmware specific question
-title: '[QUESTION] '
-labels:
-  - question
-body:
-  - type: markdown
-    attributes:
-      value: |
-        Before you create a new question, please check if an issue with it already exists (either open or closed) by using the search bar on the issues page.
-  - type: textarea
-    id: question
-    attributes:
-      label: Question
-    validations:
-      required: true

.github/travis/cmake-build.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+set -xe
+rm -rf build
+mkdir build
+cd build
+cmake .. \
+    -DCMAKE_TOOLCHAIN_FILE="../cmake/AvrGcc.cmake" \
+    -DCMAKE_BUILD_TYPE=Release \
+    -G Ninja
+ninja ALL_FIRMWARE

.github/travis/cmake-lang.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+set -xe
+rm -rf build
+mkdir build
+cd build
+cmake .. \
+    -DCMAKE_TOOLCHAIN_FILE="../cmake/AvrGcc.cmake" \
+    -DCMAKE_BUILD_TYPE=Release \
+    -G Ninja
+
+# ignore all failures in order to show as much output as possible
+ninja -k0 check_lang || true

.github/travis/cmake-test.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+set -xe
+rm -rf build
+mkdir build
+cd build
+cmake .. -G Ninja
+ninja tests
+ctest

.github/travis/legacy-build.sh

@@ -0,0 +1,34 @@
+#!/bin/sh
+set -xe
+cp Firmware/variants/MK3S.h Firmware/Configuration_prusa.h
+bash -x build.sh || { echo "MK3S variant failed" && false; }
+bash -x build.sh EN_FARM || { echo "MK3S EN_FARM failed" && false; }
+rm Firmware/Configuration_prusa.h
+cp Firmware/variants/MK3.h Firmware/Configuration_prusa.h
+bash -x build.sh || { echo "MK3 variant failed" && false; }
+bash -x build.sh EN_FARM || { echo "MK3 EN_FARM failed" && false; }
+rm Firmware/Configuration_prusa.h
+cp Firmware/variants/MK25S-RAMBo13a.h Firmware/Configuration_prusa.h
+bash -x build.sh || { echo "MK25S-RAMBo13a variant failed" && false; }
+rm Firmware/Configuration_prusa.h
+cp Firmware/variants/MK25S-RAMBo10a.h Firmware/Configuration_prusa.h
+bash -x build.sh || { echo "MK25S-RAMBo10a variant failed" && false; }
+rm Firmware/Configuration_prusa.h
+cp Firmware/variants/MK25-RAMBo13a.h Firmware/Configuration_prusa.h
+bash -x build.sh || { echo "MK25-RAMBo13a variant failed" && false; }
+rm Firmware/Configuration_prusa.h
+cp Firmware/variants/MK25-RAMBo10a.h Firmware/Configuration_prusa.h
+bash -x build.sh || { echo "MK25-RAMBo10a variant failed" && false; }
+rm Firmware/Configuration_prusa.h
+cp Firmware/variants/MK3S-E3DREVO.h Firmware/Configuration_prusa.h
+bash -x build.sh || { echo "MK3S-E3DREVO variant failed" && false; }
+rm Firmware/Configuration_prusa.h
+cp Firmware/variants/MK3-E3DREVO.h Firmware/Configuration_prusa.h
+bash -x build.sh || { echo "MK3-E3DREVO variant failed" && false; }
+rm Firmware/Configuration_prusa.h
+cp Firmware/variants/MK3S-E3DREVO_HF_60W.h Firmware/Configuration_prusa.h
+bash -x build.sh || { echo "MK3S-E3DREVO_HF_60W variant failed" && false; }
+rm Firmware/Configuration_prusa.h
+cp Firmware/variants/MK3-E3DREVO_HF_60W.h Firmware/Configuration_prusa.h
+bash -x build.sh || { echo "MK3-E3DREVO_HF_60W variant failed" && false; }
+rm Firmware/Configuration_prusa.h

.github/workflows/build.yml

@@ -6,10 +6,6 @@ on:
     - '*'
   push:
     branches: [ MK3, MK3_* ]
-    tags:
-    - 'v*'
-    - 't*'
-    - 'c*'
 
 env:
   GH_ANNOTATIONS: 1
@@ -22,12 +18,11 @@ jobs:
     # setup base required dependencies
     - name: Setup dependencies
       run: |
-          sudo apt-get update
           sudo apt-get install cmake ninja-build python3-pyelftools python3-regex python3-polib
 
     # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
     - name: Checkout ${{ github.event.pull_request.head.ref }}
-      uses: actions/checkout@v4
+      uses: actions/checkout@v3
       if: ${{ github.event.pull_request }}
       with:
         ref: ${{ github.event.pull_request.head.sha }}
@@ -35,7 +30,7 @@ jobs:
         fetch-depth: 0
 
     - name: Checkout ${{ github.event.ref }}
-      uses: actions/checkout@v4
+      uses: actions/checkout@v3
       if: ${{ !github.event.pull_request }}
       with:
         ref: ${{ github.event.ref }}
@@ -43,7 +38,7 @@ jobs:
         fetch-depth: 0
 
     - name: Cache Dependencies
-      uses: actions/cache@v4
+      uses: actions/cache@v3.0.11
       id: cache-pkgs
       with:
           path: ".dependencies"
@@ -65,22 +60,11 @@ jobs:
 
     - name: Upload artifacts
       if: ${{ !github.event.pull_request }}
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v3.1.1
       with:
         name: Firmware
         path: build/*.hex
 
-    - name: RELEASE THE KRAKEN
-      if: startsWith(github.ref, 'refs/tags/v') || startsWith(github.ref, 'refs/tags/t') || startsWith(github.ref, 'refs/tags/c')
-      uses: "marvinpinto/action-automatic-releases@latest"
-      with:
-        repo_token: "${{ secrets.GITHUB_TOKEN }}"
-        automatic_release_tag: ${{ github.ref_name }}
-        draft: true
-        files: |
-          ${{ github.workspace }}/build/release/*.hex
-          ${{ github.workspace }}/build/release/*.zip
-
   check-lang:
     runs-on: ubuntu-latest
 
@@ -88,12 +72,11 @@ jobs:
     # setup base required dependencies
     - name: Setup dependencies
       run: |
-          sudo apt-get update
           sudo apt-get install gcc-11 g++11 lcov cmake ninja-build python3-pyelftools python3-regex python3-polib
 
     # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
     - name: Checkout ${{ github.event.pull_request.head.ref }}
-      uses: actions/checkout@v4
+      uses: actions/checkout@v3
       if: ${{ github.event.pull_request }}
       with:
         ref: ${{ github.event.pull_request.head.sha }}
@@ -101,7 +84,7 @@ jobs:
         fetch-depth: 0
 
     - name: Checkout ${{ github.event.ref }}
-      uses: actions/checkout@v4
+      uses: actions/checkout@v3
       if: ${{ !github.event.pull_request }}
       with:
         ref: ${{ github.event.ref }}
@@ -109,7 +92,7 @@ jobs:
         fetch-depth: 0
 
     - name: Cache Dependencies
-      uses: actions/cache@v4
+      uses: actions/cache@v3.0.11
       id: cache-pkgs
       with:
           path: ".dependencies"
@@ -136,12 +119,11 @@ jobs:
     # setup base required dependencies
     - name: Setup dependencies
       run: |
-          sudo apt-get update
           sudo apt-get install gcc-11 g++11 lcov cmake ninja-build python3-pyelftools python3-regex python3-polib
 
     # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
     - name: Checkout ${{ github.event.pull_request.head.ref }}
-      uses: actions/checkout@v4
+      uses: actions/checkout@v3
       if: ${{ github.event.pull_request }}
       with:
         ref: ${{ github.event.pull_request.head.sha }}
@@ -149,7 +131,7 @@ jobs:
         fetch-depth: 0
 
     - name: Checkout ${{ github.event.ref }}
-      uses: actions/checkout@v4
+      uses: actions/checkout@v3
       if: ${{ !github.event.pull_request }}
       with:
         ref: ${{ github.event.ref }}
@@ -157,7 +139,7 @@ jobs:
         fetch-depth: 0
 
     - name: Cache Dependencies
-      uses: actions/cache@v4
+      uses: actions/cache@v3.0.11
       id: cache-pkgs
       with:
           path: ".dependencies"

.github/workflows/pr-size.yml

@@ -18,15 +18,14 @@ jobs:
     # setup base required dependencies
     - name: Setup dependencies
       run: |
-          sudo apt-get update
           sudo apt-get install cmake ninja-build python3-pyelftools python3-regex python3-polib
 
     # build the base branch
     - name: Checkout base
-      uses: actions/checkout@v4
+      uses: actions/checkout@v3
 
     - name: Cache Dependencies
-      uses: actions/cache@v4
+      uses: actions/cache@v3.0.11
       id: cache-pkgs
       with:
           path: ".dependencies"
@@ -54,7 +53,7 @@ jobs:
 
     # build the PR branch
     - name: Checkout PR
-      uses: actions/checkout@v4
+      uses: actions/checkout@v3
       with:
         clean: false
         ref: ${{ github.event.pull_request.head.sha }}

.github/workflows/stale.yml

@@ -11,14 +11,14 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/stale@v9
+    - uses: actions/stale@v8
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         # Don't ever mark PRs as stale.
         days-before-pr-stale: -1
-        stale-issue-message: 'Thank you for your contribution to our project. This issue has not received any updates for 60 days and may be considered "stale." If this issue is still important to you, please add an update within the next 7 days to keep it open. Administrators can manually reopen the issue if necessary.'
-        close-issue-message: 'This issue has been closed due to lack of recent activity. Please consider opening a new one if needed.'
-        # Don't act on things assigned to a milestone or assigned to someone.
+        stale-issue-message: 'This issue has been flagged as stale because it has been open for 60 days with no activity. The issue will be closed in 7 days unless someone removes the "stale" label or adds a comment.'
+        close-issue-message: 'This issue has been closed due to lack of recent activity. Please consider opening a new one if needed.' 
+        # Don't act on things assigned to a milestone or assigned to someone. 
         exempt-all-milestones: true
         exempt-all-assignees: true
         enable-statistics: true

.travis.yml

@@ -0,0 +1,55 @@
+dist: focal
+language: minimal
+
+cache:
+  directories:
+    # cmake project dependencies
+    - .dependencies/
+    # legacy PF-build dependencies
+    - ./../PF-build-env/
+
+before_install:
+  # Prepare the dependencies for the old build environment
+  - sudo apt-get install -y python3-polib python3-pyelftools python3-regex
+
+  # Undo whatever *GARBAGE* travis is doing with python and restore the system version
+  - mkdir -p .dependencies/python3
+  - ln -sf /usr/bin/python3 .dependencies/python3/python3
+  - PATH=$PWD/.dependencies/python3:$PATH
+
+  # Bootstrap cmake/ninja for the new build environment
+  - ./utils/bootstrap.py
+  - PATH=$(./utils/bootstrap.py --print-dependency-directory "cmake")/bin:$PATH
+  - PATH=$(./utils/bootstrap.py --print-dependency-directory "ninja"):$PATH
+
+  # Arduino IDE adds a lot of noise caused by network traffic, firewall it off
+  - sudo iptables -P INPUT DROP
+  - sudo iptables -P FORWARD DROP
+  - sudo iptables -P OUTPUT ACCEPT
+  - sudo iptables -A INPUT -i lo -j ACCEPT
+  - sudo iptables -A OUTPUT -o lo -j ACCEPT
+  - sudo iptables -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
+
+jobs:
+  include:
+    # legacy build.sh environment
+    - stage: legacy
+      script: ./.github/travis/legacy-build.sh
+
+    # cmake-based build
+    - stage: cmake
+      script: ./.github/travis/cmake-build.sh
+
+    # cmake tests
+    - stage: tests
+      script: ./.github/travis/cmake-test.sh
+
+    # language checks
+    - stage: lang
+      script: ./.github/travis/cmake-lang.sh
+
+stages:
+  - cmake
+  - lang
+  - legacy
+  - tests

.vscode/cmake-kits.json

@@ -3,7 +3,7 @@
         "name": "avr-gcc",
         "toolchainFile": "${workspaceFolder}/cmake/AvrGcc.cmake",
         "cmakeSettings": {
-            "CMAKE_MAKE_PROGRAM": "${workspaceFolder}/.dependencies/ninja-1.12.1/ninja",
+            "CMAKE_MAKE_PROGRAM": "${workspaceFolder}/.dependencies/ninja-1.10.2/ninja",
             "CMAKE_BUILD_TYPE": "Release"
         }
     }

CMakeLists.txt

@@ -8,14 +8,14 @@ resolve_version_variables()
 OPTION(ENFORCE_VERSION_MATCH "Enforce checking that configuration.h matches any parsed git tags" OFF)
 OPTION(NO_TAG_IS_FATAL "If tag parsing fails, issue a fatal error" OFF)
 
-set(PROJECT_VERSION_HASH
+set(PROJECT_VERSION_SUFFIX
     "<auto>"
     CACHE
       STRING
-      "Version suffix to be appended to the final filename (<ver+PROJECT_VERSION_HASH>). Overrides git hash if set."
+      "Version suffix to be appended to the final filename (<ver+PROJECT_VERSION_SUFFIX>). Overrides git hash if set."
     )
-if(PROJECT_VERSION_HASH STREQUAL "<auto>")
-  set(PROJECT_VERSION_HASH "${FW_COMMIT_HASH}")
+if(PROJECT_VERSION_SUFFIX STREQUAL "<auto>")
+  set(PROJECT_VERSION_SUFFIX "${FW_COMMIT_HASH}")
 endif()
 set(PROJECT_VERSION_FULL
     "<auto>"
@@ -36,29 +36,18 @@ set(CUSTOM_COMPILE_OPTIONS
     CACHE STRING "Allows adding custom C/C++ flags"
     )
 
-#set(FN_VERSION_SUFFIX "FW${PROJECT_VERSION}+${PROJECT_VERSION_HASH}")
-set(FN_VERSION_SUFFIX "FW_${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_REV}")
-if(PROJECT_VERSION_FLV AND PROJECT_VERSION_FLV_VER)
-  set (FN_VERSION_SUFFIX "${FN_VERSION_SUFFIX}-${PROJECT_VERSION_FLV}${PROJECT_VERSION_FLV_VER}")
-endif()
-set(FN_VERSION_DEBUG_SUFFIX "${FN_VERSION_SUFFIX}+${PROJECT_VERSION_COMMIT}")
+set(FN_PREFIX "FW${PROJECT_VERSION}+${PROJECT_VERSION_SUFFIX}")
 
-# Inform user about the resolved settings from Configuration.h
+# Inform user about the resolved settings
 message(STATUS "Project version (Configuration.h): ${PROJECT_VERSION}")
-#message(STATUS "Project version major............: ${PROJECT_VERSION_MAJOR}") #For debuging
-#message(STATUS "Project version minor............: ${PROJECT_VERSION_MINOR}") #For debuging
-#message(STATUS "Project version revision.........: ${PROJECT_VERSION_REV}") #For debuging
-#message(STATUS "Project version flavor...........: ${PROJECT_VERSION_FLV}") #For debuging
-#message(STATUS "Project version fla-revison......: ${PROJECT_VERSION_FLV_VER}") #For debuging
-#message(STATUS "Project version commit number....: ${PROJECT_VERSION_COMMIT}") #For debuging
-message(STATUS "Filename suffix..................: ${FN_VERSION_SUFFIX}")
-message(STATUS "Filename debug suffix ...........: ${FN_VERSION_DEBUG_SUFFIX}")
-#message(STATUS "Host OS .........................: ${CMAKE_HOST_SYSTEM_NAME}")
+message(STATUS "Project version suffix ..........: ${PROJECT_VERSION_SUFFIX}")
+message(STATUS "Project version description......: ${PROJECT_VERSION_FULL}")
+
 # testing
 # SET(FW_COMMIT_DSC "v3.13.0-1234")
 
-if(NOT "${PROJECT_VERSION_HASH}" STREQUAL "UNKNOWN" AND NOT "${FW_COMMIT_DSC}" MATCHES ".+NOTFOUND.+") # else -> no commit hash is known... likely no git.
-string(REGEX MATCH "[v|t|c]([0-9]+)\.([0-9]+)\.([0-9]+)-?(${DEV_TAG_REGEX})?([0-9]+)?-([0-9]+)" TAG_VERSION "${FW_COMMIT_DSC}")
+if(NOT "${PROJECT_VERSION_SUFFIX}" STREQUAL "UNKNOWN" AND NOT "${FW_COMMIT_DSC}" MATCHES ".+NOTFOUND.+") # else -> no commit hash is known... likely no git.
+string(REGEX MATCH "v([0-9]+)\.([0-9]+)\.([0-9]+)-?(${DEV_TAG_REGEX})?([0-9]+)?-([0-9]+)" TAG_VERSION "${FW_COMMIT_DSC}")
 
 if (CMAKE_MATCH_4) # Do we have a build type?
     decode_flavor_code(PROJECT_VER_TAG_FLV "${CMAKE_MATCH_4}" "${CMAKE_MATCH_5}")
@@ -94,7 +83,6 @@ MESSAGE(STATUS "Commit Nr: Configuration.h: ${PROJECT_VERSION_COMMIT} Tag: ${CMA
 MESSAGE(STATUS "These tag values will override Configuration.h")
 SET(PROJECT_VERSION ${CMAKE_MATCH_1}.${CMAKE_MATCH_2}.${CMAKE_MATCH_3}.${PROJECT_VER_TAG_FLV})
 SET(PROJECT_VERSION_COMMIT ${CMAKE_MATCH_6})
-
 git_get_repository(PROJECT_REPOSITORY)
 else(GIT_FOUND)
 if (NO_TAG_IS_FATAL)
@@ -106,28 +94,6 @@ set(FW_COMMIT_HASH ${FW_COMMIT_HASH_UNKNOWN}) # Clear it, the code expects a bin
 set(PROJECT_VERSION_TIMESTAMP "0")
 endif()
 
-if(CMAKE_MATCH_1 AND CMAKE_MATCH_2)
-  set(FN_VERSION_SUFFIX "FW_${CMAKE_MATCH_1}.${CMAKE_MATCH_2}.${CMAKE_MATCH_3}")
-endif()
-if(CMAKE_MATCH_4 AND CMAKE_MATCH_5)
-  set (FN_VERSION_SUFFIX "${FN_VERSION_SUFFIX}-${CMAKE_MATCH_4}${CMAKE_MATCH_5}")
-endif()
-if(CMAKE_MATCH_6 AND PROJECT_VERSION_HASH)
-  set(FN_VERSION_DEBUG_SUFFIX "${FN_VERSION_SUFFIX}+${CMAKE_MATCH_6}_${PROJECT_VERSION_HASH}")
-endif()
-# Inform user about the resolved settings from github
-message(STATUS "Project version git..............: ${PROJECT_VERSION}")
-message(STATUS "Project version git hash.........: ${PROJECT_VERSION_HASH}")
-message(STATUS "Project version git description..: ${PROJECT_VERSION_FULL}")
-#message(STATUS "Project version git major........: ${CMAKE_MATCH_1}") #For debuging
-#message(STATUS "Project version git minor........: ${CMAKE_MATCH_2}") #For debuging
-#message(STATUS "Project version git revision.....: ${CMAKE_MATCH_3}") #For debuging
-#message(STATUS "Project version git flavor.......: ${CMAKE_MATCH_4}") #For debuging
-#message(STATUS "Project version git fla-revison..: ${CMAKE_MATCH_5}") #For debuging
-#message(STATUS "Project version git commit number: ${CMAKE_MATCH_6}") #For debuging
-message(STATUS "Filename suffix .................: ${FN_VERSION_SUFFIX}")
-message(STATUS "Filename debug suffix ...........: ${FN_VERSION_DEBUG_SUFFIX}")
-
 # Language configuration
 set(MAIN_LANGUAGES
     cs de es fr it pl
@@ -246,13 +212,15 @@ set(FW_SOURCES
     power_panic.cpp
     printer_state.cpp
     Prusa_farm.cpp
+    qr_solve.cpp
     rbuf.c
     Sd2Card.cpp
     SdBaseFile.cpp
     SdFatUtil.cpp
     SdFile.cpp
     SdVolume.cpp
-    sm4.cpp
+    Servo.cpp
+    sm4.c
     sound.cpp
     speed_lookuptable.cpp
     spi.c
@@ -268,9 +236,10 @@ set(FW_SOURCES
     tmc2130.cpp
     tone04.c
     twi.cpp
-    uart2.cpp
+    uart2.c
     ultralcd.cpp
     util.cpp
+    vector_3.cpp
     xflash.c
     xflash_dump.cpp
     xyzcal.cpp
@@ -425,13 +394,7 @@ function(fw_add_variant variant_name)
 
   # Single-language build
   set(FW_EN "${variant_name}_ENGLISH")
-  #MK3S_MK3S+_FW_3.13.2-RC1_ENGLISH.hex
-  set(hex_variant_name "${variant_name}")
-  if(hex_variant_name STRGREATER_EQUAL "MK3S")
-    string(REPLACE "MK3S" "MK3S_MK3S+" hex_variant_name ${hex_variant_name})
-  endif()
-  set(FW_HEX "${CMAKE_BINARY_DIR}/${hex_variant_name}_${FN_VERSION_SUFFIX}_ENGLISH.hex")
-  #message(STATUS "Hex filename: ${FW_HEX}")
+  set(FW_HEX ${CMAKE_BINARY_DIR}/${FN_PREFIX}-${FW_EN}.hex)
 
   add_base_binary(${FW_EN})
   target_compile_definitions(${FW_EN} PUBLIC LANG_MODE=0 FW_VARIANT="${variant_header}")
@@ -505,15 +468,7 @@ function(fw_add_variant variant_name)
   if(${HAS_XFLASH} GREATER_EQUAL 0)
     # X-Flash based build (catalogs appended to patched binary)
     set(FW_LANG_FINAL "${variant_name}_MULTILANG")
-    set(hex_variant_name "${variant_name}")
-    #MK3S_MK3S+_FW_3.13.2-RC1+7651_deadbeef_MULTILANG.hex
-    if(hex_variant_name STRGREATER_EQUAL "MK3S")
-      string(REPLACE "MK3S" "MK3S_MK3S+" hex_variant_name ${hex_variant_name})
-    endif()
-    set(LANG_HEX ${CMAKE_BINARY_DIR}/${hex_variant_name}_${FN_VERSION_SUFFIX}_MULTILANG.hex)
-    set(LANG_DEBUG_HEX ${CMAKE_BINARY_DIR}/${hex_variant_name}_${FN_VERSION_DEBUG_SUFFIX}_MULTILANG.hex)
-    #message(STATUS "Hex filename .....: ${LANG_HEX}")
-    #message(STATUS "Hex debug filename: ${LANG_DEBUG_HEX}")
+    set(LANG_HEX ${CMAKE_BINARY_DIR}/${FN_PREFIX}-${FW_LANG_FINAL}.hex)
     set(LANG_CATBIN ${LANG_TMP_DIR}/${variant_name}_cat.bin)
     set(LANG_CATHEX ${LANG_TMP_DIR}/${variant_name}_cat.hex)
 
@@ -541,10 +496,6 @@ function(fw_add_variant variant_name)
       COMMAND ${CMAKE_COMMAND} -E cat ${FW_LANG_PATCH}.hex ${LANG_CATHEX} > ${FW_LANG_FINAL}.hex
       COMMAND ${CMAKE_COMMAND} -E create_hardlink ${FW_LANG_FINAL}.hex ${LANG_HEX}
       BYPRODUCTS ${LANG_HEX}
-      COMMAND ${CMAKE_COMMAND} -E create_hardlink ${FW_LANG_FINAL}.hex ${LANG_DEBUG_HEX}
-      BYPRODUCTS ${LANG_DEBUG_HEX}
-      COMMAND ${CMAKE_COMMAND} -E create_hardlink ${FW_LANG_FINAL}.hex ${CMAKE_BINARY_DIR}/release/${hex_variant_name}_${FN_VERSION_SUFFIX}_MULTILANG.hex
-      BYPRODUCTS ${CMAKE_BINARY_DIR}/release/${hex_variant_name}_${FN_VERSION_SUFFIX}_MULTILANG.hex
       DEPENDS ${FW_LANG_PATCH}.hex ${LANG_CATHEX}
       COMMENT "Generating final ${FW_LANG_FINAL}.hex"
       )
@@ -555,18 +506,17 @@ function(fw_add_variant variant_name)
     set(ALL_VARIANT_HEXES "")
     # Non-xflash, e.g. MK2.5
     foreach(LANG IN LISTS SELECTED_LANGUAGES)
-      set(FW_LANG_FINAL ${variant_name}_en-${LANG})
-      set(LANG_HEX ${CMAKE_BINARY_DIR}/${variant_name}_${FN_VERSION_SUFFIX}_en-${LANG}.hex)
-      set(LANG_DEBUG_HEX ${CMAKE_BINARY_DIR}/${variant_name}_${FN_VERSION_DEBUG_SUFFIX}_en-${LANG}.hex)
+      set(FW_LANG_FINAL ${variant_name}-en_${LANG})
+      set(LANG_HEX ${CMAKE_BINARY_DIR}/${FN_PREFIX}-${FW_LANG_FINAL}.hex)
       set(LANG_BIN ${LANG_TMP_DIR}/${variant_name}_${LANG}.bin)
 
       # Patched binary with pre-baked secondary language
       add_custom_command(
         OUTPUT ${FW_LANG_FINAL}.bin
-        COMMAND ${CMAKE_COMMAND} -E copy ${FW_LANG_PATCH}.bin ${FW_LANG_FINAL}.bin
+        COMMAND ${CMAKE_OBJCOPY} -O binary ${FW_LANG_BASE} ${FW_LANG_FINAL}.bin
         COMMAND "${Python3_EXECUTABLE}" ${CMAKE_SOURCE_DIR}/lang/lang-patchsec.py ${FW_LANG_BASE} ${LANG_BIN}
                 ${FW_LANG_FINAL}.bin
-        DEPENDS ${FW_LANG_BASE} ${FW_LANG_PATCH}.bin ${LANG_BIN}
+        DEPENDS ${FW_LANG_BASE} ${LANG_BIN}
         COMMENT "Generating ${FW_LANG_FINAL}.bin"
         )
 
@@ -576,8 +526,6 @@ function(fw_add_variant variant_name)
         COMMAND ${CMAKE_OBJCOPY} -I binary -O ihex ${FW_LANG_FINAL}.bin ${FW_LANG_FINAL}.hex
         COMMAND ${CMAKE_COMMAND} -E create_hardlink ${FW_LANG_FINAL}.hex ${LANG_HEX}
         BYPRODUCTS ${LANG_HEX}
-        COMMAND ${CMAKE_COMMAND} -E create_hardlink ${FW_LANG_FINAL}.hex ${LANG_DEBUG_HEX}
-        BYPRODUCTS ${LANG_DEBUG_HEX}
         DEPENDS ${FW_LANG_FINAL}.bin
         COMMENT "Creating ${FW_LANG_FINAL}.hex"
         )
@@ -586,15 +534,6 @@ function(fw_add_variant variant_name)
       list(APPEND ALL_VARIANT_HEXES ${FW_LANG_FINAL})
     endforeach()
     add_custom_target("${variant_name}-All-Languages" DEPENDS ${ALL_VARIANT_HEXES})
-    if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Linux")
-      add_custom_command(TARGET "${variant_name}-All-Languages"
-        POST_BUILD
-        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-        COMMAND ${CMAKE_COMMAND} -E make_directory "release"
-        COMMAND ${CMAKE_COMMAND} -E tar "cfv" "release/${variant_name}_${FN_VERSION_SUFFIX}.zip" --format=zip ${variant_name}_${FN_VERSION_SUFFIX}_en*.hex
-        BYPRODUCTS "${CMAKE_BINARY_DIR}/release/${variant_name}_${FN_VERSION_SUFFIX}.zip"
-        )
-    endif()
     add_dependencies(ALL_MULTILANG "${variant_name}-All-Languages")
   endif()
 endfunction()
@@ -637,18 +576,6 @@ if(CMAKE_CROSSCOMPILING)
   endforeach(THIS_VAR IN LISTS FW_VARIANTS)
 endif()
 
-SET(REVO_FW_ZIP_NAME "E3D_REVO_FW_MK3_MK3S_MK3S+_${FN_VERSION_SUFFIX}.zip")
-
-if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Linux")
-  add_custom_command(TARGET ALL_MULTILANG
-    POST_BUILD
-    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/release
-    BYPRODUCTS ${CMAKE_BINARY_DIR}/release/${REVO_FW_ZIP_NAME}
-    COMMAND ${CMAKE_COMMAND} -E tar "cfv" "${REVO_FW_ZIP_NAME}" --format=zip *E3DREVO*.hex
-    COMMAND ${CMAKE_COMMAND} -E rm *E3DREVO*.hex
-    )
-endif()
-
 #
 # Tests
 #

Community_made.md

@@ -16,7 +16,7 @@ Help `./PF-build.sh -h`
 
 # MK404 Simulator
 
-## MK404-build.sh
+## MK404-build.sh 
 **MK404 is a community 3d printer simulator created by @vintagepc**
 Please checkout and support his github repository [MK404](https://github.com/vintagepc/MK404) and the [MK404 Wiki](https://github.com/vintagepc/MK404/wiki)
 

Firmware/BlinkM.cpp

@@ -15,7 +15,7 @@
 
 void SendColors(byte red, byte grn, byte blu)
 {
-  Wire.begin();
+  Wire.begin(); 
   Wire.beginTransmission(0x09);
   Wire.write('o');                    //to disable ongoing script, only needs to be used once
   Wire.write('n');

Firmware/Configuration.h

@@ -1,7 +1,6 @@
 #ifndef CONFIGURATION_H
 #define CONFIGURATION_H
 
-#include <stdint.h>
 #include "boards.h"
 
 #define STR_HELPER(x) #x
@@ -20,9 +19,9 @@ extern const char _sPrinterMmuName[] PROGMEM;
 // Otherwise the repository information takes precedence.
 #ifndef CMAKE_CONTROL
 #define FW_MAJOR 3
-#define FW_MINOR 14
-#define FW_REVISION 1
-#define FW_COMMITNR 8225
+#define FW_MINOR 13
+#define FW_REVISION 0
+#define FW_COMMITNR 6853
 #define FW_FLAVOR RC      //uncomment if DEV, ALPHA, BETA or RC
 #define FW_FLAVERSION 1     //uncomment if FW_FLAVOR is defined and versioning is needed. Limited to max 8.
 #endif
@@ -35,7 +34,7 @@ extern const char _sPrinterMmuName[] PROGMEM;
     // Construct the TWEAK value as it is expected from the enum.
     #define FW_TWEAK (CONCAT(FIRMWARE_REVISION_,FW_FLAVOR) + FW_FLAVERSION)
     #define FW_VERSION STR(FW_MAJOR) "." STR(FW_MINOR) "." STR(FW_REVISION) "-" STR(FW_FLAVOR) "" STR(FW_FLAVERSION)
-    #define FW_VERSION_FULL STR(FW_MAJOR) "." STR(FW_MINOR) "." STR(FW_REVISION) "-" STR(FW_FLAVOR) "" STR(FW_FLAVERSION) "+" STR(FW_COMMITNR)
+    #define FW_VERSION_FULL STR(FW_MAJOR) "." STR(FW_MINOR) "." STR(FW_REVISION) "-" STR(FW_FLAVOR) "" STR(FW_FLAVERSION) "-" STR(FW_COMMITNR)
 #endif
 
 // The full version string and repository source are set via cmake
@@ -71,7 +70,7 @@ extern const char _sPrinterMmuName[] PROGMEM;
 // build by the user have been successfully uploaded into firmware.
 
 #define STRING_VERSION_CONFIG_H SOURCE_DATE_EPOCH " " SOURCE_TIME_EPOCH // build date and time
-#define STRING_CONFIG_H_AUTHOR FW_REPOSITORY // Who made the changes.
+#define STRING_CONFIG_H_AUTHOR "(none, default config)" // Who made the changes.
 
 // SERIAL_PORT selects which serial port should be used for communication with the host.
 // This allows the connection of wireless adapters (for instance) to non-default port pins.
@@ -122,6 +121,13 @@ extern const char _sPrinterMmuName[] PROGMEM;
 #define TEMP_HYSTERESIS 5       // (degC) range of +/- temperatures considered "close" to the target one
 #define TEMP_WINDOW     1       // (degC) Window around target to start the residency timer x degC early.
 
+
+
+// If your bed has low resistance e.g. .6 ohm and throws the fuse you can duty cycle it to reduce the
+// average current. The value should be an integer and the heat bed will be turned on for 1 interval of
+// HEATER_BED_DUTY_CYCLE_DIVIDER intervals.
+//#define HEATER_BED_DUTY_CYCLE_DIVIDER 4
+
 // If you want the M105 heater power reported in watts, define the BED_WATTS, and (shared for all extruders) EXTRUDER_WATTS
 //#define EXTRUDER_WATTS (12.0*12.0/6.7) //  P=I^2/R
 //#define BED_WATTS (12.0*12.0/1.1)      // P=I^2/R
@@ -284,6 +290,124 @@ your extruder heater takes 2 minutes to hit the target on heating.
 
 #define HOME_Z_SEARCH_THRESHOLD 0.15f             // Threshold of the Z height in calibration
 
+//============================= Bed Auto Leveling ===========================
+
+//#define ENABLE_AUTO_BED_LEVELING // Delete the comment to enable (remove // at the start of the line)
+#define Z_PROBE_REPEATABILITY_TEST  // If not commented out, Z-Probe Repeatability test will be included if Auto Bed Leveling is Enabled.
+
+#ifdef ENABLE_AUTO_BED_LEVELING
+
+// There are 2 different ways to pick the X and Y locations to probe:
+
+//  - "grid" mode
+//    Probe every point in a rectangular grid
+//    You must specify the rectangle, and the density of sample points
+//    This mode is preferred because there are more measurements.
+//    It used to be called ACCURATE_BED_LEVELING but "grid" is more descriptive
+
+//  - "3-point" mode
+//    Probe 3 arbitrary points on the bed (that aren't colinear)
+//    You must specify the X & Y coordinates of all 3 points
+
+  #define AUTO_BED_LEVELING_GRID
+  // with AUTO_BED_LEVELING_GRID, the bed is sampled in a
+  // AUTO_BED_LEVELING_GRID_POINTSxAUTO_BED_LEVELING_GRID_POINTS grid
+  // and least squares solution is calculated
+  // Note: this feature occupies 10'206 byte
+  #ifdef AUTO_BED_LEVELING_GRID
+
+    // set the rectangle in which to probe
+    #define LEFT_PROBE_BED_POSITION 15
+    #define RIGHT_PROBE_BED_POSITION 170
+    #define BACK_PROBE_BED_POSITION 180
+    #define FRONT_PROBE_BED_POSITION 20
+
+     // set the number of grid points per dimension
+     // I wouldn't see a reason to go above 3 (=9 probing points on the bed)
+    #define AUTO_BED_LEVELING_GRID_POINTS 2
+
+
+  #else  // not AUTO_BED_LEVELING_GRID
+    // with no grid, just probe 3 arbitrary points.  A simple cross-product
+    // is used to esimate the plane of the print bed
+
+      #define ABL_PROBE_PT_1_X 15
+      #define ABL_PROBE_PT_1_Y 180
+      #define ABL_PROBE_PT_2_X 15
+      #define ABL_PROBE_PT_2_Y 20
+      #define ABL_PROBE_PT_3_X 170
+      #define ABL_PROBE_PT_3_Y 20
+
+  #endif // AUTO_BED_LEVELING_GRID
+
+
+  // these are the offsets to the probe relative to the extruder tip (Hotend - Probe)
+  // X and Y offsets must be integers
+  #define X_PROBE_OFFSET_FROM_EXTRUDER -25
+  #define Y_PROBE_OFFSET_FROM_EXTRUDER -29
+  #define Z_PROBE_OFFSET_FROM_EXTRUDER -12.35
+
+  #define Z_RAISE_BEFORE_HOMING 5       // (in mm) Raise Z before homing (G28) for Probe Clearance.
+                                        // Be sure you have this distance over your Z_MAX_POS in case
+
+  #define XY_TRAVEL_SPEED 8000         // X and Y axis travel speed between probes, in mm/min
+
+  #define Z_RAISE_BEFORE_PROBING 15    //How much the extruder will be raised before traveling to the first probing point.
+  #define Z_RAISE_BETWEEN_PROBINGS 5  //How much the extruder will be raised when traveling from between next probing points
+
+  //#define Z_PROBE_SLED // turn on if you have a z-probe mounted on a sled like those designed by Charles Bell
+  //#define SLED_DOCKING_OFFSET 5 // the extra distance the X axis must travel to pickup the sled. 0 should be fine but you can push it further if you'd like.
+
+  //If defined, the Probe servo will be turned on only during movement and then turned off to avoid jerk
+  //The value is the delay to turn the servo off after powered on - depends on the servo speed; 300ms is good value, but you can try lower it.
+  // You MUST HAVE the SERVO_ENDSTOPS defined to use here a value higher than zero otherwise your code will not compile.
+
+//  #define PROBE_SERVO_DEACTIVATION_DELAY 300
+
+
+//If you have enabled the Bed Auto Leveling and are using the same Z Probe for Z Homing,
+//it is highly recommended you let this Z_SAFE_HOMING enabled!
+
+  //#define Z_SAFE_HOMING   // This feature is meant to avoid Z homing with probe outside the bed area.
+                          // When defined, it will:
+                          // - Allow Z homing only after X and Y homing AND stepper drivers still enabled
+                          // - If stepper drivers timeout, it will need X and Y homing again before Z homing
+                          // - Position the probe in a defined XY point before Z Homing when homing all axis (G28)
+                          // - Block Z homing only when the probe is outside bed area.
+
+  #ifdef Z_SAFE_HOMING
+
+    #define Z_SAFE_HOMING_X_POINT (X_MAX_LENGTH/2)    // X point for Z homing when homing all axis (G28)
+    #define Z_SAFE_HOMING_Y_POINT (Y_MAX_LENGTH/2)    // Y point for Z homing when homing all axis (G28)
+
+  #endif
+
+  #ifdef AUTO_BED_LEVELING_GRID	// Check if Probe_Offset * Grid Points is greater than Probing Range
+    #if X_PROBE_OFFSET_FROM_EXTRUDER < 0
+      #if (-(X_PROBE_OFFSET_FROM_EXTRUDER * AUTO_BED_LEVELING_GRID_POINTS) >= (RIGHT_PROBE_BED_POSITION - LEFT_PROBE_BED_POSITION))
+	     #error "The X axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
+	  #endif
+	#else
+      #if ((X_PROBE_OFFSET_FROM_EXTRUDER * AUTO_BED_LEVELING_GRID_POINTS) >= (RIGHT_PROBE_BED_POSITION - LEFT_PROBE_BED_POSITION))
+	     #error "The X axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
+	  #endif
+	#endif
+    #if Y_PROBE_OFFSET_FROM_EXTRUDER < 0
+      #if (-(Y_PROBE_OFFSET_FROM_EXTRUDER * AUTO_BED_LEVELING_GRID_POINTS) >= (BACK_PROBE_BED_POSITION - FRONT_PROBE_BED_POSITION))
+	     #error "The Y axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
+	  #endif
+	#else
+      #if ((Y_PROBE_OFFSET_FROM_EXTRUDER * AUTO_BED_LEVELING_GRID_POINTS) >= (BACK_PROBE_BED_POSITION - FRONT_PROBE_BED_POSITION))
+	     #error "The Y axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
+	  #endif
+	#endif
+
+
+  #endif
+
+#endif // ENABLE_AUTO_BED_LEVELING
+
+
 // The position of the homing switches
 //#define MANUAL_HOME_POSITIONS  // If defined, MANUAL_*_HOME_POS below will be used
 //#define BED_CENTER_AT_0_0  // If defined, the center of the bed is at (X=0, Y=0)
@@ -301,6 +425,17 @@ your extruder heater takes 2 minutes to hit the target on heating.
 //=============================Additional Features===========================
 //===========================================================================
 
+// Custom M code points
+#define CUSTOM_M_CODES
+#ifdef CUSTOM_M_CODES
+#ifdef ENABLE_AUTO_BED_LEVELING
+  #define CUSTOM_M_CODE_SET_Z_PROBE_OFFSET 851
+  #define Z_PROBE_OFFSET_RANGE_MIN -15
+  #define Z_PROBE_OFFSET_RANGE_MAX -5
+#endif // ENABLE_AUTO_BED_LEVELING
+#endif // CUSTOM_M_CODES
+
+
 // Host Keepalive
 //
 // When enabled Marlin will send a busy status message to the host
@@ -324,10 +459,6 @@ your extruder heater takes 2 minutes to hit the target on heating.
 #define SDSUPPORT
 #define LCD_WIDTH 20
 #define LCD_HEIGHT 4
-#define LCD_BACKLIGHT_LEVEL_HIGH 130
-#define LCD_BACKLIGHT_LEVEL_LOW 50
-#define LCD_BACKLIGHT_FORCE_ON 30
-#define LCD_BACKLIGHT_TIMEOUT 15
 
 
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
@@ -358,12 +489,26 @@ your extruder heater takes 2 minutes to hit the target on heating.
 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
+/*********************************************************************\
+* R/C SERVO support
+* Sponsored by TrinityLabs, Reworked by codexmas
+**********************************************************************/
+
+// Number of servos
+//
+// If you select a configuration below, this will receive a default value and does not need to be set manually
+// set it manually if you have more servos than extruders and wish to manually control some
+// leaving it undefined or defining as 0 will disable the servo subsystem
+// If unsure, leave commented / disabled
+//
+//#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
+
 #define DEFAULT_NOMINAL_FILAMENT_DIA  1.75  //Enter the diameter (in mm) of the filament generally used (3.0 mm or 1.75 mm). Used by the volumetric extrusion.
 
 // Try to maintain a minimum distance from the bed even when Z is
 // unknown when doing the following operations
-#define MIN_Z_FOR_LOAD    35 // lcd filament loading or autoload (values for load and unload have been unified to prevent movement between unload & load operations!)
-#define MIN_Z_FOR_UNLOAD  35 // lcd filament unloading
+#define MIN_Z_FOR_LOAD    50 // lcd filament loading or autoload
+#define MIN_Z_FOR_UNLOAD  50 // lcd filament unloading
 #define MIN_Z_FOR_SWAP    27 // filament change (including M600)
 #define MIN_Z_FOR_PREHEAT 10 // lcd preheat
 

Firmware/ConfigurationStore.cpp

@@ -106,9 +106,6 @@ void Config_PrintSettings(uint8_t level)
 #ifdef THERMAL_MODEL
     thermal_model_report_settings();
 #endif
-		printf_P(PSTR(
-        "%SStatistics:\n%S  M78 S%lu T%lu\n"),
-        echomagic, echomagic, eeprom_read_dword((uint32_t *)EEPROM_FILAMENTUSED), eeprom_read_dword((uint32_t *)EEPROM_TOTALTIME));
 }
 #endif
 
@@ -119,6 +116,10 @@ static_assert (EXTRUDERS == 1, "ConfigurationStore M500_conf not implemented for
 static_assert (NUM_AXIS == 4, "ConfigurationStore M500_conf not implemented for more axis."
         "Fix axis_steps_per_mm max_feedrate_normal max_acceleration_mm_per_s2_normal max_jerk max_feedrate_silent"
         " max_acceleration_mm_per_s2_silent array size.");
+#ifdef ENABLE_AUTO_BED_LEVELING
+static_assert (false, "zprobe_zoffset was not initialized in printers in field to -(Z_PROBE_OFFSET_FROM_EXTRUDER), so it contains"
+        "0.0, if this is not acceptable, increment EEPROM_VERSION to force use default_conf");
+#endif
 
 static_assert (sizeof(M500_conf) == 209, "sizeof(M500_conf) has changed, ensure that EEPROM_VERSION has been incremented, "
         "or if you added members in the end of struct, ensure that historically uninitialized values will be initialized."
@@ -180,7 +181,7 @@ static const M500_conf default_conf PROGMEM =
 void Config_StoreSettings()
 {
   strcpy_P(cs.version, default_conf.version);
-  eeprom_update_block_notify(reinterpret_cast<uint8_t*>(&cs), reinterpret_cast<uint8_t*>(EEPROM_M500_base), sizeof(cs));
+  eeprom_update_block(reinterpret_cast<uint8_t*>(&cs), reinterpret_cast<uint8_t*>(EEPROM_M500_base), sizeof(cs));
 #ifdef THERMAL_MODEL
   thermal_model_save_settings();
 #endif
@@ -205,7 +206,7 @@ bool Config_RetrieveSettings()
         eeprom_init_default_byte(&EEPROM_M500_base->n_arc_correction, pgm_read_byte(&default_conf.n_arc_correction));
         eeprom_init_default_word(&EEPROM_M500_base->min_arc_segments, pgm_read_word(&default_conf.min_arc_segments));
         eeprom_init_default_word(&EEPROM_M500_base->arc_segments_per_sec, pgm_read_word(&default_conf.arc_segments_per_sec));
-
+        
         // Initialize the travel_acceleration in eeprom if not already
         eeprom_init_default_float(&EEPROM_M500_base->travel_acceleration, pgm_read_float(&default_conf.travel_acceleration));
 
@@ -213,10 +214,6 @@ bool Config_RetrieveSettings()
         eeprom_init_default_block(&EEPROM_M500_base->max_feedrate_silent, sizeof(EEPROM_M500_base->max_feedrate_silent), default_conf.max_feedrate_silent);
         eeprom_init_default_block(&EEPROM_M500_base->max_acceleration_mm_per_s2_silent, sizeof(EEPROM_M500_base->max_acceleration_mm_per_s2_silent), default_conf.max_acceleration_mm_per_s2_silent);
 
-#ifdef TMC2130
-        eeprom_init_default_block(&EEPROM_M500_base->axis_ustep_resolution, sizeof(EEPROM_M500_base->axis_ustep_resolution), default_conf.axis_ustep_resolution);
-#endif // TMC2130
-
         // load the CS to RAM
         eeprom_read_block(reinterpret_cast<uint8_t*>(&cs), reinterpret_cast<uint8_t*>(EEPROM_M500_base), sizeof(cs));
         calculate_extruder_multipliers();
@@ -233,6 +230,11 @@ bool Config_RetrieveSettings()
       if (cs.max_acceleration_mm_per_s2_silent[j] > SILENT_MAX_ACCEL_XY)
         cs.max_acceleration_mm_per_s2_silent[j] = SILENT_MAX_ACCEL_XY;
     }
+        
+    if(cs.axis_ustep_resolution[X_AXIS] == 0xff){ cs.axis_ustep_resolution[X_AXIS] = TMC2130_USTEPS_XY; }
+    if(cs.axis_ustep_resolution[Y_AXIS] == 0xff){ cs.axis_ustep_resolution[Y_AXIS] = TMC2130_USTEPS_XY; }
+    if(cs.axis_ustep_resolution[Z_AXIS] == 0xff){ cs.axis_ustep_resolution[Z_AXIS] = TMC2130_USTEPS_Z; }
+    if(cs.axis_ustep_resolution[E_AXIS] == 0xff){ cs.axis_ustep_resolution[E_AXIS] = TMC2130_USTEPS_E; }
 
     tmc2130_set_res(X_AXIS, cs.axis_ustep_resolution[X_AXIS]);
     tmc2130_set_res(Y_AXIS, cs.axis_ustep_resolution[Y_AXIS]);
@@ -270,7 +272,7 @@ void Config_ResetDefault()
 
   // steps per sq second need to be updated to agree with the units per sq second
     reset_acceleration_rates();
-
+    
 #ifdef PIDTEMP
     updatePID();
 #endif//PIDTEMP

Firmware/ConfigurationStore.h

@@ -19,7 +19,7 @@ typedef struct
     uint32_t min_segment_time_us; //!< (µs) M205 B
     float max_jerk[4]; //!< Jerk is a maximum immediate velocity change.
     float add_homing[3];
-    float zprobe_zoffset; //!< unused
+    float zprobe_zoffset; //!< Only used with define ENABLE_AUTO_BED_LEVELING
     float Kp;
     float Ki;
     float Kd;

Firmware/Configuration_adv.h

@@ -54,7 +54,7 @@
 
 /**
  * Auto-report all at once with M155 S<seconds> C[bitmask] with single timer
- *
+ * 
  * bit 0 = Auto-report temperatures
  * bit 1 = Auto-report fans
  * bit 2 = Auto-report position
@@ -69,9 +69,6 @@
 // Keepalive period which is restarted with M79
 #define M79_TIMEOUT 30 * 1000 // ms
 
-// A timer which is restarted everytime a G-command is added to the command queue.
-#define USB_TIMER_TIMEOUT 10 * 1000 // ms
-
 //===========================================================================
 //=============================Mechanical Settings===========================
 //===========================================================================
@@ -125,6 +122,34 @@
 #endif //End auto min/max positions
 //END AUTOSET LOCATIONS OF LIMIT SWITCHES -ZP
 
+
+// A single Z stepper driver is usually used to drive 2 stepper motors.
+// Uncomment this define to utilize a separate stepper driver for each Z axis motor.
+// Only a few motherboards support this, like RAMPS, which have dual extruder support (the 2nd, often unused, extruder driver is used
+// to control the 2nd Z axis stepper motor). The pins are currently only defined for a RAMPS motherboards.
+// On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
+//#define Z_DUAL_STEPPER_DRIVERS
+
+#ifdef Z_DUAL_STEPPER_DRIVERS
+  #undef EXTRUDERS
+  #define EXTRUDERS 1
+#endif
+
+// Same again but for Y Axis.
+//#define Y_DUAL_STEPPER_DRIVERS
+
+// Define if the two Y drives need to rotate in opposite directions
+#define INVERT_Y2_VS_Y_DIR 1
+
+#ifdef Y_DUAL_STEPPER_DRIVERS
+  #undef EXTRUDERS
+  #define EXTRUDERS 1
+#endif
+
+#if defined (Z_DUAL_STEPPER_DRIVERS) && defined (Y_DUAL_STEPPER_DRIVERS)
+  #error "You cannot have dual drivers for both Y and Z"
+#endif
+
 //homing hits the endstop, then retracts by this distance, before it tries to slowly bump again:
 #define X_HOME_RETRACT_MM 5
 #define Y_HOME_RETRACT_MM 5
@@ -201,7 +226,7 @@
 * limit is exceeded.
 */
 	#define SDCARD_SORT_ALPHA //Alphabetical sorting of SD files menu
-
+	
 	// SD Card Sorting options
 	#ifdef SDCARD_SORT_ALPHA
 	  #define SD_SORT_TIME 0
@@ -210,11 +235,11 @@
 	  #define INSERTSORT
 	  // #define SORTING_DUMP
 	  // #define SORTING_SPEEDTEST
-
+	
 	  #define SDSORT_LIMIT       100    // Maximum number of sorted items (10-256).
 	  #define FOLDER_SORTING     -1     // -1=above  0=none  1=below
 	#endif
-
+	
 	#if defined(SDCARD_SORT_ALPHA)
 	  #define HAS_FOLDER_SORTING (FOLDER_SORTING)
 	#endif
@@ -364,7 +389,7 @@ const unsigned int dropsegments=5; //everything with less than this number of st
 
 /**
  * Enable M120/M121 G-code commands
- *
+ * 
  */
 //#define M120_M121_ENABLED  //Be careful enabling and using these G-code commands.
 

Firmware/Dcodes.cpp

@@ -120,7 +120,7 @@ void write_mem(uint16_t address, uint16_t count, const uint8_t* data, const dcod
         switch (type)
         {
         case dcode_mem_t::sram: *((uint8_t*)address) = data[i]; break;
-        case dcode_mem_t::eeprom: eeprom_write_byte_notify((uint8_t*)address, data[i]); break;
+        case dcode_mem_t::eeprom: eeprom_write_byte((uint8_t*)address, data[i]); break;
         case dcode_mem_t::progmem: break;
         case dcode_mem_t::xflash: break;
         }
@@ -162,19 +162,19 @@ void dcode_core(daddr_t addr_start, const daddr_t addr_end, const dcode_mem_t ty
     ### D3 - Read/Write EEPROM <a href="https://reprap.org/wiki/G-code#D3:_Read.2FWrite_EEPROM">D3: Read/Write EEPROM</a>
     This command can be used without any additional parameters. It will read the entire eeprom.
     #### Usage
-
+    
         D3 [ A | C | X ]
-
+    
     #### Parameters
     - `A` - Address (x0000-x0fff)
     - `C` - Count (1-4096)
     - `X` - Data (hex)
-
+	
 	#### Notes
 	- The hex address needs to be lowercase without the 0 before the x
-	- Count is decimal
+	- Count is decimal 
 	- The hex data needs to be lowercase
-
+	
     */
 void dcode_3()
 {
@@ -191,14 +191,21 @@ void dcode_3()
 #include <avr/wdt.h>
 #include "bootapp.h"
 
+#if 0
+extern float current_temperature_pinda;
+extern float axis_steps_per_mm[NUM_AXIS];
+
+
+#define LOG(args...) printf(args)
+#endif //0
 #define LOG(args...)
 
     /*!
     *
     ### D-1 - Endless Loop <a href="https://reprap.org/wiki/G-code#G28:_Move_to_Origin_.28Home.29">D-1: Endless Loop</a>
-
+      
           D-1
-
+      
     *
     */
 void dcode__1()
@@ -213,9 +220,9 @@ void dcode__1()
     /*!
     ### D0 - Reset <a href="https://reprap.org/wiki/G-code#D0:_Reset">D0: Reset</a>
     #### Usage
-
+    
         D0 [ B ]
-
+    
     #### Parameters
     - `B` - Bootloader
     */
@@ -238,9 +245,9 @@ void dcode_0()
     /*!
     *
     ### D1 - Clear EEPROM and RESET <a href="https://reprap.org/wiki/G-code#D1:_Clear_EEPROM_and_RESET">D1: Clear EEPROM and RESET</a>
-
+      
           D1
-
+      
     *
     */
 void dcode_1()
@@ -248,7 +255,7 @@ void dcode_1()
 	LOG("D1 - Clear EEPROM and RESET\n");
 	cli();
 	for (int i = 0; i < 8192; i++)
-		eeprom_write_byte_notify((unsigned char*)i, (unsigned char)0xff);
+		eeprom_write_byte((unsigned char*)i, (unsigned char)0xff);
 	softReset();
 }
 #endif
@@ -280,13 +287,13 @@ void dcode_2()
 
 #ifdef DEBUG_DCODES
     /*!
-
+    
     ### D4 - Read/Write PIN <a href="https://reprap.org/wiki/G-code#D4:_Read.2FWrite_PIN">D4: Read/Write PIN</a>
     To read the digital value of a pin you need only to define the pin number.
     #### Usage
-
+    
         D4 [ P | F | V ]
-
+    
     #### Parameters
     - `P` - Pin (0-255)
     - `F` - Function in/out (0/1)
@@ -328,19 +335,20 @@ void dcode_4()
     ### D5 - Read/Write FLASH <a href="https://reprap.org/wiki/G-code#D5:_Read.2FWrite_FLASH">D5: Read/Write Flash</a>
     This command can be used without any additional parameters. It will read the 1kb FLASH.
     #### Usage
-
+    
         D5 [ A | C | X | E ]
-
+    
     #### Parameters
     - `A` - Address (x00000-x3ffff)
     - `C` - Count (1-8192)
     - `X` - Data (hex)
     - `E` - Erase
-
+ 	
 	#### Notes
 	- The hex address needs to be lowercase without the 0 before the x
-	- Count is decimal
+	- Count is decimal 
 	- The hex data needs to be lowercase
+	
    */
 void dcode_5()
 {
@@ -449,9 +457,9 @@ void dcode_7()
     /*!
     ### D8 - Read/Write PINDA <a href="https://reprap.org/wiki/G-code#D8:_Read.2FWrite_PINDA">D8: Read/Write PINDA</a>
     #### Usage
-
+    
         D8 [ ? | ! | P | Z ]
-
+    
     #### Parameters
     - `?` - Read PINDA temperature shift values
     - `!` - Reset PINDA temperature shift values to default
@@ -479,12 +487,12 @@ void dcode_8()
 	else if (strchr_pointer[1+1] == '!')
 	{
 		cal_status = 1;
-		eeprom_write_byte_notify((uint8_t*)EEPROM_CALIBRATION_STATUS_PINDA, cal_status);
-		eeprom_write_word_notify(((uint16_t*)EEPROM_PROBE_TEMP_SHIFT) + 0,   8); //40C -  20um -   8usteps
-		eeprom_write_word_notify(((uint16_t*)EEPROM_PROBE_TEMP_SHIFT) + 1,  24); //45C -  60um -  24usteps
-		eeprom_write_word_notify(((uint16_t*)EEPROM_PROBE_TEMP_SHIFT) + 2,  48); //50C - 120um -  48usteps
-		eeprom_write_word_notify(((uint16_t*)EEPROM_PROBE_TEMP_SHIFT) + 3,  80); //55C - 200um -  80usteps
-		eeprom_write_word_notify(((uint16_t*)EEPROM_PROBE_TEMP_SHIFT) + 4, 120); //60C - 300um - 120usteps
+		eeprom_write_byte((uint8_t*)EEPROM_CALIBRATION_STATUS_PINDA, cal_status);
+		eeprom_write_word(((uint16_t*)EEPROM_PROBE_TEMP_SHIFT) + 0,   8); //40C -  20um -   8usteps
+		eeprom_write_word(((uint16_t*)EEPROM_PROBE_TEMP_SHIFT) + 1,  24); //45C -  60um -  24usteps
+		eeprom_write_word(((uint16_t*)EEPROM_PROBE_TEMP_SHIFT) + 2,  48); //50C - 120um -  48usteps
+		eeprom_write_word(((uint16_t*)EEPROM_PROBE_TEMP_SHIFT) + 3,  80); //55C - 200um -  80usteps
+		eeprom_write_word(((uint16_t*)EEPROM_PROBE_TEMP_SHIFT) + 4, 120); //60C - 300um - 120usteps
 	}
 	else
 	{
@@ -502,11 +510,11 @@ void dcode_8()
     /*!
     ### D9 - Read ADC <a href="https://reprap.org/wiki/G-code#D9:_Read.2FWrite_ADC">D9: Read ADC</a>
     #### Usage
-
+    
         D9 [ I | V ]
-
+    
     #### Parameters
-    - `I` - ADC channel index
+    - `I` - ADC channel index 
         - `0` - Heater 0 temperature
         - `1` - Heater 1 temperature
         - `2` - Bed temperature
@@ -610,9 +618,9 @@ void dcode_12()
     ### D80 - Bed check <a href="https://reprap.org/wiki/G-code#D80:_Bed_check">D80: Bed check</a>
     This command will log data to SD card file "mesh.txt".
     #### Usage
-
+    
         D80 [ E | F | G | H | I | J ]
-
+    
     #### Parameters
     - `E` - Dimension X (default 40)
     - `F` - Dimention Y (default 40)
@@ -650,9 +658,9 @@ void dcode_80()
     ### D81 - Bed analysis <a href="https://reprap.org/wiki/G-code#D81:_Bed_analysis">D80: Bed analysis</a>
     This command will log data to SD card file "wldsd.txt".
     #### Usage
-
+    
         D81 [ E | F | G | H | I | J ]
-
+    
     #### Parameters
     - `E` - Dimension X (default 40)
     - `F` - Dimention Y (default 40)
@@ -676,9 +684,9 @@ void dcode_81()
 	if (code_seen("H")) { strchr_pointer+=1; points_y = code_value(); }
 	if (code_seen("I")) { strchr_pointer+=1; offset_x = code_value(); }
 	if (code_seen("J")) { strchr_pointer+=1; offset_y = code_value(); }
-
+	
 	bed_analysis(dimension_x,dimension_y,points_x,points_y,offset_x,offset_y);
-
+	
 }
 
 #endif //HEATBED_ANALYSIS
@@ -705,11 +713,11 @@ extern void st_synchronize();
     /*!
     ### D2130 - Trinamic stepper controller <a href="https://reprap.org/wiki/G-code#D2130:_Trinamic_stepper_controller">D2130: Trinamic stepper controller</a>
     @todo Please review by owner of the code. RepRap Wiki Gcode needs to be updated after review of owner as well.
-
+    
     #### Usage
-
+    
         D2130 [ Axis | Command | Subcommand | Value ]
-
+    
     #### Parameters
     - Axis
       - `X` - X stepper driver
@@ -738,21 +746,21 @@ extern void st_synchronize();
           - `0, 180 --> 250` - Off
           - `0.9 --> 1.25`   - Valid values (recommended is 1.1)
       - `@`   - Home calibrate axis
-
+    
     Examples:
-
+      
           D2130E?wave
-
+      
       Print extruder microstep linearity compensation curve
-
+      
           D2130E!wave0
-
+      
       Disable extruder linearity compensation curve, (sine curve is used)
-
+      
           D2130E!wave220
-
+      
       (sin(x))^1.1 extruder microstep compensation curve used
-
+    
     Notes:
       For more information see https://www.trinamic.com/fileadmin/assets/Products/ICs_Documents/TMC2130_datasheet.pdf
     *
@@ -862,9 +870,9 @@ void dcode_2130()
     /*!
     ### D9125 - PAT9125 filament sensor <a href="https://reprap.org/wiki/G-code#D9:_Read.2FWrite_ADC">D9125: PAT9125 filament sensor</a>
     #### Usage
-
+    
         D9125 [ ? | ! | R | X | Y | L ]
-
+    
     #### Parameters
     - `?` - Print values
     - `!` - Print values

Firmware/Filament_sensor.cpp

@@ -8,7 +8,6 @@
 #include "language.h"
 #include "menu.h"
 #include "messages.h"
-#include "mmu2.h"
 #include "planner.h"
 #include "temperature.h"
 #include "ultralcd.h"
@@ -42,7 +41,7 @@ FSensorBlockRunout::~FSensorBlockRunout() { }
 #endif // FILAMENT_SENSOR
 
 void Filament_sensor::setEnabled(bool enabled) {
-    eeprom_update_byte_notify((uint8_t *)EEPROM_FSENSOR, enabled);
+    eeprom_update_byte((uint8_t *)EEPROM_FSENSOR, enabled);
     if (enabled) {
         fsensor.init();
     } else {
@@ -53,21 +52,21 @@ void Filament_sensor::setEnabled(bool enabled) {
 void Filament_sensor::setAutoLoadEnabled(bool state, bool updateEEPROM) {
     autoLoadEnabled = state;
     if (updateEEPROM) {
-        eeprom_update_byte_notify((uint8_t *)EEPROM_FSENS_AUTOLOAD_ENABLED, state);
+        eeprom_update_byte((uint8_t *)EEPROM_FSENS_AUTOLOAD_ENABLED, state);
     }
 }
 
 void Filament_sensor::setRunoutEnabled(bool state, bool updateEEPROM) {
     runoutEnabled = state;
     if (updateEEPROM) {
-        eeprom_update_byte_notify((uint8_t *)EEPROM_FSENS_RUNOUT_ENABLED, state);
+        eeprom_update_byte((uint8_t *)EEPROM_FSENS_RUNOUT_ENABLED, state);
     }
 }
 
 void Filament_sensor::setActionOnError(SensorActionOnError state, bool updateEEPROM) {
     sensorActionOnError = state;
     if (updateEEPROM) {
-        eeprom_update_byte_notify((uint8_t *)EEPROM_FSENSOR_ACTION_NA, (uint8_t)state);
+        eeprom_update_byte((uint8_t *)EEPROM_FSENSOR_ACTION_NA, (uint8_t)state);
     }
 }
 
@@ -149,7 +148,6 @@ void Filament_sensor::triggerFilamentRemoved() {
 
 void Filament_sensor::filRunout() {
 //    SERIAL_ECHOLNPGM("filRunout");
-    sendHostNotification_P(MSG_FILAMENT_RUNOUT_DETECTED);
     runoutEnabled = false;
     autoLoadEnabled = false;
     stop_and_save_print_to_ram(0, 0);
@@ -290,7 +288,7 @@ const char *IR_sensor_analog::getIRVersionText() {
 void IR_sensor_analog::setSensorRevision(SensorRevision rev, bool updateEEPROM) {
     sensorRevision = rev;
     if (updateEEPROM) {
-        eeprom_update_byte_notify((uint8_t *)EEPROM_FSENSOR_PCB, (uint8_t)rev);
+        eeprom_update_byte((uint8_t *)EEPROM_FSENSOR_PCB, (uint8_t)rev);
     }
 }
 
@@ -313,7 +311,22 @@ bool IR_sensor_analog::checkVoltage(uint16_t raw) {
             puts_P(PSTR("fsensor v0.4 in fault range 4.6-5V - unconnected"));
             return false;
         }
+        /// newer IR sensor cannot normally produce 0-0.3V, this is considered a failure
+#if 0 // Disabled as it has to be decided if we gonna use this or not.
+            if(IRsensor_Hopen_TRESHOLD <= raw && raw <= IRsensor_VMax_TRESHOLD) {
+                puts_P(PSTR("fsensor v0.4 in fault range 0.0-0.3V - wrong IR sensor"));
+                return false;
+            }
+#endif
     }
+    /// If IR sensor is "uknown state" and filament is not loaded > 1.5V return false
+#if 0
+#error "I really think this code can't be enabled anymore because we are constantly checking this voltage."
+        if((sensorRevision == SensorRevision::_Undef) && (raw > IRsensor_Lmax_TRESHOLD)) {
+            puts_P(PSTR("Unknown IR sensor version and no filament loaded detected."));
+            return false;
+        }
+#endif
     // otherwise the IR fsensor is considered working correctly
     return true;
 }
@@ -433,7 +446,7 @@ void PAT9125_sensor::setJamDetectionEnabled(bool state, bool updateEEPROM) {
     resetStepCount();
     jamErrCnt = 0;
     if (updateEEPROM) {
-        eeprom_update_byte_notify((uint8_t *)EEPROM_FSENSOR_JAM_DETECTION, state);
+        eeprom_update_byte((uint8_t *)EEPROM_FSENSOR_JAM_DETECTION, state);
     }
 }
 

Firmware/Filament_sensor.h

@@ -21,7 +21,7 @@ public:
 };
 
 /// Base class Filament sensor
-///
+/// 
 /// Ideally, there could have been a nice class hierarchy of filament sensor types with common functionality
 /// extracted into this base class.
 /// But:
@@ -37,43 +37,43 @@ public:
         ready,
         error,
     };
-
+    
     enum class SensorActionOnError : uint8_t {
         _Continue = 0,
         _Pause = 1,
         _Undef = EEPROM_EMPTY_VALUE
     };
-
+    
     static void setEnabled(bool enabled);
-
+    
     void setAutoLoadEnabled(bool state, bool updateEEPROM = false);
     bool getAutoLoadEnabled() const { return autoLoadEnabled; }
-
+    
     void setRunoutEnabled(bool state, bool updateEEPROM = false);
     bool getRunoutEnabled() const { return runoutEnabled; }
-
+    
     void setActionOnError(SensorActionOnError state, bool updateEEPROM = false);
     SensorActionOnError getActionOnError() const { return sensorActionOnError; }
-
+    
     bool getFilamentLoadEvent() const { return postponedLoadEvent; }
-
+    
     bool isError() const { return state == State::error; }
     bool isReady() const { return state == State::ready; }
     bool isEnabled() const { return state != State::disabled; }
-
+    
 protected:
     void settings_init_common();
-
+    
     bool checkFilamentEvents();
-
+    
     void triggerFilamentInserted();
-
+    
     void triggerFilamentRemoved();
 
     void filRunout();
-
+    
     void triggerError();
-
+    
     State state;
     bool autoLoadEnabled;
     bool runoutEnabled;
@@ -109,37 +109,37 @@ public:
     void init();
     bool update();
     void voltUpdate(uint16_t raw);
-
+    
     uint16_t __attribute__((noinline)) getVoltRaw();
-
+    
     enum class SensorRevision : uint8_t {
         _Old = 0,
         _Rev04 = 1,
         _Undef = EEPROM_EMPTY_VALUE
     };
-
+    
     SensorRevision getSensorRevision() const { return sensorRevision; }
-
+    
     const char* __attribute__((noinline)) getIRVersionText();
-
+    
     void setSensorRevision(SensorRevision rev, bool updateEEPROM = false);
-
+    
     constexpr static uint16_t IRsensor_Ldiode_TRESHOLD = Voltage2Raw(0.3F); // ~0.3V, raw value=982
     constexpr static uint16_t IRsensor_Lmax_TRESHOLD = Voltage2Raw(1.5F); // ~1.5V (0.3*Vcc), raw value=4910
     constexpr static uint16_t IRsensor_Hmin_TRESHOLD = Voltage2Raw(3.0F); // ~3.0V (0.6*Vcc), raw value=9821
     constexpr static uint16_t IRsensor_Hopen_TRESHOLD = Voltage2Raw(4.6F); // ~4.6V (N.C. @ Ru~20-50k, Rd'=56k, Ru'=10k), raw value=15059
     constexpr static uint16_t IRsensor_VMax_TRESHOLD = Voltage2Raw(5.F); // ~5V, raw value=16368
-
+    
 private:
     SensorRevision sensorRevision;
-
+    
     bool voltReady; // set by the adc ISR, therefore avoid accessing the variable directly but use getVoltReady()
     bool getVoltReady()const;
     void clearVoltReady();
-
+    
     uint16_t voltRaw; // set by the adc ISR, therefore avoid accessing the variable directly but use getVoltRaw()
     bool checkVoltage(uint16_t raw);
-
+    
     uint16_t minVolt = Voltage2Raw(6.F);
     uint16_t maxVolt = 0;
     uint16_t nFSCheckCount;
@@ -165,14 +165,14 @@ public:
 #ifdef FSENSOR_PROBING
     bool probeOtherType(); //checks if the wrong fsensor type is detected.
 #endif
-
+    
     void setJamDetectionEnabled(bool state, bool updateEEPROM = false);
     bool getJamDetectionEnabled() const { return jamDetection; }
-
+    
     void stStep(bool rev) { //from stepper isr
         stepCount += rev ? -1 : 1;
     }
-
+    
     void settings_init();
 private:
     static constexpr uint16_t pollingPeriod = 10; //[ms]
@@ -180,23 +180,23 @@ private:
     ShortTimer pollingTimer;
     uint8_t filter;
     uint8_t filterFilPresent;
-
+    
     bool jamDetection;
     int16_t oldPos;
     int16_t stepCount;
     int16_t chunkSteps;
     uint8_t jamErrCnt;
-
+    
     constexpr void calcChunkSteps(float u) {
         chunkSteps = (int16_t)(1.25 * u); //[mm]
     }
-
+    
     int16_t getStepCount();
-
+    
     void resetStepCount();
-
+    
     void filJam();
-
+    
     bool updatePAT9125();
 };
 #endif //(FILAMENT_SENSOR_TYPE == FSENSOR_PAT9125)

Firmware/Marlin.h

@@ -21,6 +21,7 @@
 #include "Configuration.h"
 #include "pins.h"
 #include "Timer.h"
+#include "mmu2.h"
 #include "printer_state.h"
 
 #ifndef AT90USB
@@ -63,6 +64,8 @@
   #define MYSERIAL MSerial
 #endif
 
+#include "lcd.h"
+
 #define SERIAL_PROTOCOL(x) (MYSERIAL.print(x))
 #define SERIAL_PROTOCOL_F(x,y) (MYSERIAL.print(x,y))
 #define SERIAL_PROTOCOLPGM(x) (serialprintPGM(PSTR(x)))
@@ -121,20 +124,35 @@ void manage_inactivity(bool ignore_stepper_queue=false);
 #endif
 
 #if defined(Y_ENABLE_PIN) && Y_ENABLE_PIN > -1
-  #define  enable_y() WRITE(Y_ENABLE_PIN, Y_ENABLE_ON)
-  #define disable_y() { WRITE(Y_ENABLE_PIN,!Y_ENABLE_ON); axis_known_position[Y_AXIS] = false; }
+  #ifdef Y_DUAL_STEPPER_DRIVERS
+    #define  enable_y() { WRITE(Y_ENABLE_PIN, Y_ENABLE_ON); WRITE(Y2_ENABLE_PIN,  Y_ENABLE_ON); }
+    #define disable_y() { WRITE(Y_ENABLE_PIN,!Y_ENABLE_ON); WRITE(Y2_ENABLE_PIN, !Y_ENABLE_ON); axis_known_position[Y_AXIS] = false; }
+  #else
+    #define  enable_y() WRITE(Y_ENABLE_PIN, Y_ENABLE_ON)
+    #define disable_y() { WRITE(Y_ENABLE_PIN,!Y_ENABLE_ON); axis_known_position[Y_AXIS] = false; }
+  #endif
 #else
   #define enable_y() ;
   #define disable_y() ;
 #endif
 
-#if defined(Z_ENABLE_PIN) && Z_ENABLE_PIN > -1
+#if defined(Z_ENABLE_PIN) && Z_ENABLE_PIN > -1 
 	#if defined(Z_AXIS_ALWAYS_ON)
+		  #ifdef Z_DUAL_STEPPER_DRIVERS
+			#define  poweron_z() { WRITE(Z_ENABLE_PIN, Z_ENABLE_ON); WRITE(Z2_ENABLE_PIN, Z_ENABLE_ON); }
+			#define poweroff_z() { WRITE(Z_ENABLE_PIN,!Z_ENABLE_ON); WRITE(Z2_ENABLE_PIN,!Z_ENABLE_ON); axis_known_position[Z_AXIS] = false; }
+		  #else
 			#define  poweron_z() WRITE(Z_ENABLE_PIN, Z_ENABLE_ON)
 			#define poweroff_z() {}
+		  #endif
 	#else
+		#ifdef Z_DUAL_STEPPER_DRIVERS
+			#define  poweron_z() { WRITE(Z_ENABLE_PIN, Z_ENABLE_ON); WRITE(Z2_ENABLE_PIN, Z_ENABLE_ON); }
+			#define poweroff_z() { WRITE(Z_ENABLE_PIN,!Z_ENABLE_ON); WRITE(Z2_ENABLE_PIN,!Z_ENABLE_ON); axis_known_position[Z_AXIS] = false; }
+		#else
 			#define  poweron_z() WRITE(Z_ENABLE_PIN, Z_ENABLE_ON)
 			#define poweroff_z() { WRITE(Z_ENABLE_PIN,!Z_ENABLE_ON); axis_known_position[Z_AXIS] = false; }
+		#endif
 	#endif
 #else
     #define  poweron_z() {}
@@ -179,7 +197,6 @@ void kill(const char *full_screen_message = NULL);
 void finishAndDisableSteppers();
 
 void UnconditionalStop();                   // Stop heaters, motion and clear current print status
-void ConditionalStop();                     // Similar to UnconditionalStop, but doesn't disable heaters
 void ThermalStop(bool allow_pause = false); // Emergency stop used by overtemp functions which allows
                                             // recovery (with pause=true)
 bool IsStopped();                           // Returns true if the print has been stopped
@@ -235,7 +252,6 @@ uint16_t restore_interrupted_gcode();
 float __attribute__((noinline)) get_feedrate_mm_s(const float feedrate_mm_min);
 
 #ifdef TMC2130
-void check_Z_crash(void);
 void homeaxis(uint8_t axis, uint8_t cnt = 1, uint8_t* pstep = 0);
 #else
 void homeaxis(uint8_t axis, uint8_t cnt = 1);
@@ -263,7 +279,6 @@ extern int fan_speed[2];
 #define active_extruder 0
 
 extern bool mesh_bed_leveling_flag;
-extern bool did_pause_print;
 
 // save/restore printing
 extern bool saved_printing;
@@ -295,18 +310,8 @@ extern LongTimer safetyTimer;
 // the print is paused, that still counts as a "running" print.
 bool printJobOngoing();
 
-// Make debug_printer_states available everywhere
-#ifdef DEBUG_PRINTER_STATES
-void debug_printer_states();
-#endif //DEBUG_PRINTER_STATES
-
-// Printing is paused according to SD or host indicators
-bool printingIsPaused();
-
 bool printer_active();
 
-bool printer_recovering();
-
 //! Beware - mcode_in_progress is set as soon as the command gets really processed,
 //! which is not the same as posting the M600 command into the command queue
 //! There can be a considerable lag between posting M600 and its real processing which might result
@@ -333,7 +338,7 @@ bool babystep_allowed_strict();
 
 extern void calculate_extruder_multipliers();
 
-// Similar to the default Arduino delay function,
+// Similar to the default Arduino delay function, 
 // but it keeps the background tasks running.
 extern void delay_keep_alive(unsigned int ms);
 
@@ -349,6 +354,9 @@ void bed_analysis(float x_dimension, float y_dimension, int x_points_num, int y_
 void bed_check(float x_dimension, float y_dimension, int x_points_num, int y_points_num, float shift_x, float shift_y);
 #endif //HEATBED_ANALYSIS
 float temp_comp_interpolation(float temperature);
+#if 0
+void show_fw_version_warnings();
+#endif
 uint8_t check_printer_version();
 
 #ifdef PINDA_THERMISTOR
@@ -372,7 +380,6 @@ void refresh_print_state_in_ram();
 void refresh_saved_feedrate_multiplier_in_ram();
 void clear_print_state_in_ram();
 extern void stop_and_save_print_to_ram(float z_move, float e_move);
-void restore_file_from_sd();
 void restore_extruder_temperature_from_ram();
 extern void restore_print_from_ram_and_continue(float e_move);
 extern void cancel_saved_printing();
@@ -396,7 +403,7 @@ extern uint8_t calc_percent_done();
 /*enum MarlinBusyState {
 	NOT_BUSY,           // Not in a handler
 	IN_HANDLER,         // Processing a GCode
-	IN_PROCESS,         // Known to be blocking command input
+	IN_PROCESS,         // Known to be blocking command input (as in G29)
 	PAUSED_FOR_USER,    // Blocking pending any input
 	PAUSED_FOR_INPUT    // Blocking pending text input (concept)
 };*/
@@ -436,10 +443,10 @@ void gcode_M701(float fastLoadLength, uint8_t mmuSlotIndex);
 #define UVLO !(PINE & (1<<4))
 
 
-void M600_load_filament(const char* filament_name);
-void M600_load_filament_movements(const char* filament_name);
+void M600_load_filament();
+void M600_load_filament_movements();
 void M600_wait_for_user();
-bool M600_check_state_and_repeat(const char* filament_name);
+void M600_check_state();
 void load_filament_final_feed();
 void marlin_wait_for_click();
 float raise_z(float delta);

Firmware/MarlinSerial.cpp

@@ -15,7 +15,7 @@
   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-
+  
   Modified 23 November 2006 by David A. Mellis
   Modified 28 September 2010 by Mark Sproul
 */
@@ -26,7 +26,7 @@
 uint8_t selectedSerialPort = 0;
 
 #ifndef AT90USB
-// this next line disables the entire HardwareSerial.cpp,
+// this next line disables the entire HardwareSerial.cpp, 
 // this is so I can support Attiny series and any other chip without a UART
 #if defined(UBRRH) || defined(UBRR0H) || defined(UBRR1H) || defined(UBRR2H) || defined(UBRR3H)
 
@@ -129,8 +129,8 @@ void MarlinSerial::begin(long baud)
   sbi(M_UCSRxB, M_RXENx);
   sbi(M_UCSRxB, M_TXENx);
   sbi(M_UCSRxB, M_RXCIEx);
-
-  if (selectedSerialPort == 1) { //set up also the second serial port
+  
+  if (selectedSerialPort == 1) { //set up also the second serial port 
 	  if (useU2X) {
 		  UCSR1A = 1 << U2X1;
 		  baud_setting = (F_CPU / 4 / baud - 1) / 2;
@@ -142,7 +142,7 @@ void MarlinSerial::begin(long baud)
 	  // assign the baud_setting, a.k.a. ubbr (USART Baud Rate Register)
 	  UBRR1H = baud_setting >> 8;
 	  UBRR1L = baud_setting;
-
+	  
 	  sbi(UCSR1B, RXEN1);
 	  sbi(UCSR1B, TXEN1);
 	  sbi(UCSR1B, RXCIE1);
@@ -250,7 +250,7 @@ void MarlinSerial::print(double n, int digits)
 void MarlinSerial::println(void)
 {
   // print('\r');
-  print('\n');
+  print('\n');  
 }
 
 /*void MarlinSerial::println(const String &s)
@@ -311,13 +311,13 @@ void MarlinSerial::println(double n, int digits)
 
 void MarlinSerial::printNumber(unsigned long n, uint8_t base)
 {
-  unsigned char buf[8 * sizeof(long)]; // Assumes 8-bit chars.
+  unsigned char buf[8 * sizeof(long)]; // Assumes 8-bit chars. 
   uint8_t i = 0;
 
   if (n == 0) {
     print('0');
     return;
-  }
+  } 
 
   while (n > 0) {
     buf[i++] = n % base;
@@ -330,8 +330,8 @@ void MarlinSerial::printNumber(unsigned long n, uint8_t base)
       'A' + buf[i - 1] - 10));
 }
 
-void MarlinSerial::printFloat(double number, uint8_t digits)
-{
+void MarlinSerial::printFloat(double number, uint8_t digits) 
+{ 
   // Handle negative numbers
   if (number < 0.0)
   {
@@ -343,7 +343,7 @@ void MarlinSerial::printFloat(double number, uint8_t digits)
   double rounding = 0.5;
   for (uint8_t i=0; i<digits; ++i)
     rounding /= 10.0;
-
+  
   number += rounding;
 
   // Extract the integer part of the number and print it
@@ -353,7 +353,7 @@ void MarlinSerial::printFloat(double number, uint8_t digits)
 
   // Print the decimal point, but only if there are digits beyond
   if (digits > 0)
-    print('.');
+    print('.'); 
 
   // Extract digits from the remainder one at a time
   while (digits-- > 0)
@@ -361,8 +361,8 @@ void MarlinSerial::printFloat(double number, uint8_t digits)
     remainder *= 10.0;
     int toPrint = int(remainder);
     print(toPrint);
-    remainder -= toPrint;
-  }
+    remainder -= toPrint; 
+  } 
 }
 // Preinstantiate Objects //////////////////////////////////////////////////////
 

Firmware/MarlinSerial.h

@@ -23,7 +23,7 @@
 #define MarlinSerial_h
 #include "Marlin.h"
 
-#if !defined(SERIAL_PORT)
+#if !defined(SERIAL_PORT) 
 #define SERIAL_PORT 0
 #endif
 
@@ -34,7 +34,7 @@
 	(SERIAL_PORT == 3 && defined(UBRR3H)))
 #define HAS_UART
 #endif
-
+						
 // These are macros to build serial port register names for the selected SERIAL_PORT (C preprocessor
 // requires two levels of indirection to expand macro values properly)
 #if SERIAL_PORT == 0 && (!defined(UBRR0H) || !defined(UDR0)) // use un-numbered registers if necessary
@@ -43,15 +43,15 @@
 #define SERIAL_REGNAME(registerbase,number,suffix) _REGNAME(registerbase, number, suffix)
 #endif
 
-// Registers used by MarlinSerial class (these are expanded
+// Registers used by MarlinSerial class (these are expanded 
 // depending on selected serial port
 #define M_UCSRxA SERIAL_REGNAME(UCSR,SERIAL_PORT,A) // defines M_UCSRxA to be UCSRnA where n is the serial port number
-#define M_UCSRxB SERIAL_REGNAME(UCSR,SERIAL_PORT,B)
-#define M_RXENx SERIAL_REGNAME(RXEN,SERIAL_PORT,)
-#define M_TXENx SERIAL_REGNAME(TXEN,SERIAL_PORT,)
-#define M_RXCIEx SERIAL_REGNAME(RXCIE,SERIAL_PORT,)
-#define M_UDREx SERIAL_REGNAME(UDRE,SERIAL_PORT,)
-#define M_UDRx SERIAL_REGNAME(UDR,SERIAL_PORT,)
+#define M_UCSRxB SERIAL_REGNAME(UCSR,SERIAL_PORT,B) 
+#define M_RXENx SERIAL_REGNAME(RXEN,SERIAL_PORT,)    
+#define M_TXENx SERIAL_REGNAME(TXEN,SERIAL_PORT,)    
+#define M_RXCIEx SERIAL_REGNAME(RXCIE,SERIAL_PORT,)    
+#define M_UDREx SERIAL_REGNAME(UDRE,SERIAL_PORT,)    
+#define M_UDRx SERIAL_REGNAME(UDR,SERIAL_PORT,)  
 #define M_UBRRxH SERIAL_REGNAME(UBRR,SERIAL_PORT,H)
 #define M_UBRRxL SERIAL_REGNAME(UBRR,SERIAL_PORT,L)
 #define M_RXCx SERIAL_REGNAME(RXC,SERIAL_PORT,)
@@ -97,7 +97,7 @@ class MarlinSerial //: public Stream
     static int peek(void);
     static int read(void);
     static void flush(void);
-
+    
     static /*FORCE_INLINE*/ int available(void)
     {
       return (unsigned int)(RX_BUFFER_SIZE + rx_buffer.head - rx_buffer.tail) % RX_BUFFER_SIZE;
@@ -124,7 +124,7 @@ class MarlinSerial //: public Stream
 			UDR1 = c;
 		}
 	}
-
+    
     static void checkRx(void)
     {
         if (selectedSerialPort == 0) {
@@ -177,15 +177,15 @@ class MarlinSerial //: public Stream
             }
         }
     }
-
-
+    
+    
     private:
     static void printNumber(unsigned long, uint8_t);
     static void printFloat(double, uint8_t);
-
-
+    
+    
   public:
-
+    
     static /*FORCE_INLINE*/ void write(const char *str)
     {
       while (*str)
@@ -205,7 +205,7 @@ class MarlinSerial //: public Stream
         write(s[i]);
       }
     }*/
-
+    
     static FORCE_INLINE void print(const char *str)
     {
       write(str);

Firmware/Prusa_farm.cpp

@@ -8,7 +8,6 @@
 #include "ultralcd.h"
 #include "Filament_sensor.h"
 #include "language.h"
-#include "lcd.h"
 #include "stopwatch.h"
 
 #ifdef PRUSA_FARM
@@ -133,7 +132,7 @@ static void lcd_connect_printer() {
 
     int i = 0;
     int t = 0;
-    lcd_puts_at_P(0, 0, PSTR("Connect printer to"));
+    lcd_puts_at_P(0, 0, PSTR("Connect printer to")); 
     lcd_puts_at_P(0, 1, PSTR("monitoring or hold"));
     lcd_puts_at_P(0, 2, PSTR("the knob to continue"));
     while (no_response) {
@@ -146,7 +145,7 @@ static void lcd_connect_printer() {
             t = 0;
         }
         if (READ(BTN_ENC)) { //if button is not pressed
-            i = 0;
+            i = 0; 
             lcd_puts_at_P(0, 3, PSTR("                    "));
         }
         if (i != 0)
@@ -233,13 +232,13 @@ void prusa_statistics(uint8_t _message) {
     const uint8_t _fil_nr = 0;
     if (!farm_mode)
         return;
-
+    
     switch (_message) {
     case 0: // default message
         if (busy_state == PAUSED_FOR_USER) {
             prusa_statistics_case0(15);
         }
-        else if (printingIsPaused()) {
+        else if (print_job_timer.isPaused()) {
             prusa_statistics_case0(14);
         }
         else if (IS_SD_PRINTING || (eFilamentAction != FilamentAction::None)) {
@@ -390,7 +389,7 @@ void prusa_statistics_update_from_lcd_update() {
 }
 
 void farm_mode_init() {
-    farm_mode = eeprom_init_default_byte((uint8_t*)EEPROM_FARM_MODE, 0);
+    farm_mode = eeprom_init_default_byte((uint8_t*)EEPROM_FARM_MODE, 0); 
     if (farm_mode) {
         no_response = true; //we need confirmation by recieving PRUSA thx
         prusa_statistics(8);
@@ -404,14 +403,14 @@ void farm_mode_init() {
         fsensor.setAutoLoadEnabled(false);
 #endif //FILAMENT_SENSOR
         // ~ FanCheck -> on
-        eeprom_update_byte_notify((uint8_t*)EEPROM_FAN_CHECK_ENABLED, true);
+        eeprom_update_byte((uint8_t*)EEPROM_FAN_CHECK_ENABLED, true);
     }
 }
 
 bool farm_prusa_code_seen() {
     if (!farm_mode)
         return false;
-
+    
     if (code_seen_P(PSTR("PRN"))) { // PRUSA PRN
         printf_P(_N("%u"), status_number);
     }
@@ -442,15 +441,15 @@ bool farm_prusa_code_seen() {
     else {
         return false;
     }
-
+    
     return true;
 }
 
 void farm_gcode_g98() {
     farm_mode = 1;
-    eeprom_update_byte_notify((unsigned char *)EEPROM_FARM_MODE, farm_mode);
+    eeprom_update_byte((unsigned char *)EEPROM_FARM_MODE, farm_mode);
     SilentModeMenu = SILENT_MODE_OFF;
-    eeprom_update_byte_notify((unsigned char *)EEPROM_SILENT, SilentModeMenu);
+    eeprom_update_byte((unsigned char *)EEPROM_SILENT, SilentModeMenu);
     fCheckModeInit(); // alternatively invoke printer reset
 }
 
@@ -462,7 +461,7 @@ void farm_gcode_g99() {
 
 void farm_disable() {
     farm_mode = false;
-    eeprom_update_byte_notify((uint8_t*)EEPROM_FARM_MODE, farm_mode);
+    eeprom_update_byte((uint8_t*)EEPROM_FARM_MODE, farm_mode);
 }
 
 #else //PRUSA_FARM

Firmware/Sd2Card.cpp

@@ -767,7 +767,7 @@ uint8_t Sd2Card::waitStartBlock(void) {
   return false;
 }
 
-// Toshiba FlashAir support, copied from
+// Toshiba FlashAir support, copied from 
 // https://flashair-developers.com/en/documents/tutorials/arduino/
 // However, the official website was closed in September 2019.
 // There is an archived website (written in Japanese).
@@ -783,7 +783,7 @@ uint8_t Sd2Card::readExt(uint32_t arg, uint8_t* dst, uint16_t count) {
     error(SD_CARD_ERROR_CMD48);
     goto fail;
   }
-
+  
   // wait for start block token.
   if (!waitStartBlock()) {
     goto fail;
@@ -793,7 +793,7 @@ uint8_t Sd2Card::readExt(uint32_t arg, uint8_t* dst, uint16_t count) {
   for (i = 0; i < count; ++i) {
     dst[i] = spiRec();
   }
-
+  
   // skip dummy bytes and 16-bit crc.
   for (; i < 514; ++i) {
     spiRec();
@@ -815,19 +815,19 @@ uint8_t Sd2Card::readExt(uint32_t arg, uint8_t* dst, uint16_t count) {
  * \return The value one, true, is returned for success and
  * the value zero, false, is returned for failure.
  */
-uint8_t Sd2Card::readExtMemory(uint8_t mio, uint8_t func,
+uint8_t Sd2Card::readExtMemory(uint8_t mio, uint8_t func, 
     uint32_t addr, uint16_t count, uint8_t* dst) {
   uint32_t offset = addr & 0x1FF;
   if (offset + count > 512) count = 512 - offset;
-
+  
   if (count == 0) return true;
-
-  uint32_t arg =
-      (((uint32_t)mio & 0x1) << 31) |
+  
+  uint32_t arg = 
+      (((uint32_t)mio & 0x1) << 31) | 
     (mio ? (((uint32_t)func & 0x7) << 28) : (((uint32_t)func & 0xF) << 27)) |
     ((addr & 0x1FFFF) << 9) |
     ((count - 1) & 0x1FF);
-
+  
   return readExt(arg, dst, count);
 }
 

Firmware/Sd2Card.h

@@ -174,7 +174,7 @@ class Sd2Card {
   /**
    * Read a card's CID register. The CID contains card identification
    * information such as Manufacturer ID, Product name, Product serial
-   * number and Manufacturing date.
+   * number and Manufacturing date. 
    *
    * \param[out] cid pointer to area for returned data.
    *
@@ -243,4 +243,4 @@ class Sd2Card {
 #endif  // Sd2Card_h
 
 
-#endif
+#endif

Firmware/SdBaseFile.cpp

@@ -1115,7 +1115,7 @@ int8_t SdBaseFile::readDir(dir_t* dir, char* longFilename) {
   int16_t n;
   // if not a directory file or miss-positioned return an error
   if (!isDir() || (0X1F & curPosition_)) return -1;
-
+  
   //If we have a longFilename buffer, mark it as invalid. If we find a long filename it will be filled automaticly.
   if (longFilename != NULL)
   {

Firmware/SdBaseFile.h

@@ -281,7 +281,7 @@ class SdBaseFile {
   static void printFatDate(uint16_t fatDate);
   static void printFatTime( uint16_t fatTime);
   bool printName();
-protected:
+protected:  
   int16_t read();
   int16_t read(void* buf, uint16_t nbyte);
 public:

Firmware/SdFatStructs.h

@@ -468,29 +468,29 @@ uint32_t const FAT32MASK = 0X0FFFFFFF;
  * \brief FAT short directory entry
  *
  * Short means short 8.3 name, not the entry size.
- *
- * Date Format. A FAT directory entry date stamp is a 16-bit field that is
+ *  
+ * Date Format. A FAT directory entry date stamp is a 16-bit field that is 
  * basically a date relative to the MS-DOS epoch of 01/01/1980. Here is the
- * format (bit 0 is the LSB of the 16-bit word, bit 15 is the MSB of the
+ * format (bit 0 is the LSB of the 16-bit word, bit 15 is the MSB of the 
  * 16-bit word):
- *
- * Bits 9-15: Count of years from 1980, valid value range 0-127
+ *   
+ * Bits 9-15: Count of years from 1980, valid value range 0-127 
  * inclusive (1980-2107).
- *
+ *   
  * Bits 5-8: Month of year, 1 = January, valid value range 1-12 inclusive.
  *
  * Bits 0-4: Day of month, valid value range 1-31 inclusive.
  *
  * Time Format. A FAT directory entry time stamp is a 16-bit field that has
- * a granularity of 2 seconds. Here is the format (bit 0 is the LSB of the
+ * a granularity of 2 seconds. Here is the format (bit 0 is the LSB of the 
  * 16-bit word, bit 15 is the MSB of the 16-bit word).
- *
+ *   
  * Bits 11-15: Hours, valid value range 0-23 inclusive.
- *
+ * 
  * Bits 5-10: Minutes, valid value range 0-59 inclusive.
- *
+ *      
  * Bits 0-4: 2-second count, valid value range 0-29 inclusive (0 - 58 seconds).
- *
+ *   
  * The valid time range is from Midnight 00:00:00 to 23:59:58.
  */
 struct directoryEntry {
@@ -548,7 +548,7 @@ struct directoryEntry {
  *
  * directoryVFATEntries are found in the same list as normal directoryEntry.
  * But have the attribute field set to DIR_ATT_LONG_NAME.
- *
+ * 
  * Long filenames are saved in multiple directoryVFATEntries.
  * Each entry containing 13 UTF-16 characters.
  */

Firmware/SdFatUtil.cpp

@@ -45,7 +45,7 @@ int SdFatUtil::FreeRam() {
 #endif  // __arm
 
 void SdFatUtil::set_stack_guard()
-{
+{	
 	uint32_t *stack_guard;
 
 	stack_guard = (uint32_t*)(&__bss_end + STACK_GUARD_MARGIN);

Firmware/SdFile.cpp

@@ -87,7 +87,7 @@ int16_t SdFile::readFilteredGcode(){
 
     // It may seem unreasonable to copy the variable into a local one and copy it back at the end of this method,
     // but there is an important point of view: the compiler is unsure whether it can optimize the reads/writes
-    // to gfReadPtr within this method, because it is a class member variable.
+    // to gfReadPtr within this method, because it is a class member variable. 
     // The compiler cannot see, if omitting read/write won't have any incorrect side-effects to the rest of the whole FW.
     // So this trick explicitly states, that rdPtr is a local variable limited to the scope of this method,
     // therefore the compiler can omit read/write to it (keep it in registers!) as it sees fit.
@@ -96,7 +96,7 @@ int16_t SdFile::readFilteredGcode(){
 
     // the same applies to gfXBegin, codesize dropped another 100B!
     const uint8_t *blockBuffBegin = gfBlockBuffBegin();
-
+    
     uint8_t consecutiveCommentLines = 0;
     while( *rdPtr == ';' ){
         for(;;){
@@ -104,8 +104,8 @@ int16_t SdFile::readFilteredGcode(){
             //while( *(++gfReadPtr) != '\n' ); // skip until a newline is found - suboptimal code!
             // Wondering, why this "nice while cycle" is done in such a weird way using a separate find_endl() function?
             // Have a look at the ASM code GCC produced!
-
-            // At first - a separate find_endl() makes the compiler understand,
+            
+            // At first - a separate find_endl() makes the compiler understand, 
             // that I don't need to store gfReadPtr every time, I'm only interested in the final address where the '\n' was found
             // - the cycle can run on CPU registers only without touching memory besides reading the character being compared.
             // Not only makes the code run considerably faster, but is also 40B shorter!
@@ -118,7 +118,7 @@ int16_t SdFile::readFilteredGcode(){
             //   11c62:	sbci	r19, 0xFF	; 255
             //   11c64:	ld	r22, Z
             //   11c66:	cpi	r22, 0x0A	; 10
-            //   11c68:	brne	.-12     	; 0x11c5e <get_command()+0x524>
+            //   11c68:	brne	.-12     	; 0x11c5e <get_command()+0x524>            
 
             // Still, even that was suboptimal as the compiler seems not to understand the usage of ld r22, Z+ (the plus is important)
             // aka automatic increment of the Z register (R30:R31 pair)
@@ -153,7 +153,7 @@ emit_char:
     {
         gfUpdateCurrentPosition( rdPtr - start + 1 );
         int16_t rv = *rdPtr++;
-
+        
         if( curPosition_ >= fileSize_ ){
             // past the end of file
             goto eof_or_fail;
@@ -200,7 +200,7 @@ bool SdFile::gfComputeNextFileBlock() {
         // SHR by 9 means skip the last byte and shift just 3 bytes by 1
         // -> should be 8 instructions... and not the horrible loop shifting 4 bytes at once
         // still need to get some work on this
-        gfBlock = vol_->rootDirStart() + (curPosition_ >> 9);
+        gfBlock = vol_->rootDirStart() + (curPosition_ >> 9); 
     } else {
         uint8_t blockOfCluster = vol_->blockOfCluster(curPosition_);
         if (gfOffset == 0 && blockOfCluster == 0) {

Firmware/SdFile.h

@@ -35,19 +35,19 @@
  */
 class SdFile : public SdBaseFile/*, public Print*/ {
   // GCode filtering vars and methods - due to optimization reasons not wrapped in a separate class
-
+  
   // beware - this read ptr is manipulated inside just 2 methods - readFilteredGcode and gfReset
   // If you even want to call gfReset from readFilteredGcode, you must make sure
   // to update gfReadPtr inside readFilteredGcode from a local copy (see explanation of this trick in readFilteredGcode)
   const uint8_t *gfReadPtr;
-
+  
   uint32_t gfBlock; // remember the current file block to be kept in cache - due to reuse of the memory, the block may fall out a must be read back
   uint16_t gfOffset;
 
   const uint8_t *gfBlockBuffBegin()const;
-
+  
   void gfReset();
-
+  
   bool gfEnsureBlock();
   bool gfComputeNextFileBlock();
   void gfUpdateCurrentPosition(uint16_t inc);
@@ -59,7 +59,7 @@ public:
   #else
    void write(uint8_t b);
   #endif
-
+  
   bool openFilteredGcode(SdBaseFile* dirFile, const char* path);
   int16_t readFilteredGcode();
   bool seekSetFilteredGcode(uint32_t pos);

Firmware/Servo.cpp

@@ -0,0 +1,344 @@
+/*
+ Servo.cpp - Interrupt driven Servo library for Arduino using 16 bit timers- Version 2
+ Copyright (c) 2009 Michael Margolis.  All right reserved.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/*
+
+ A servo is activated by creating an instance of the Servo class passing the desired pin to the attach() method.
+ The servos are pulsed in the background using the value most recently written using the write() method
+
+ Note that analogWrite of PWM on pins associated with the timer are disabled when the first servo is attached.
+ Timers are seized as needed in groups of 12 servos - 24 servos use two timers, 48 servos will use four.
+
+ The methods are:
+
+ Servo - Class for manipulating servo motors connected to Arduino pins.
+
+ attach(pin )  - Attaches a servo motor to an i/o pin.
+ attach(pin, min, max  ) - Attaches to a pin setting min and max values in microseconds
+ default min is 544, max is 2400
+
+ write()     - Sets the servo angle in degrees.  (invalid angle that is valid as pulse in microseconds is treated as microseconds)
+ writeMicroseconds() - Sets the servo pulse width in microseconds
+ read()      - Gets the last written servo pulse width as an angle between 0 and 180.
+ readMicroseconds()   - Gets the last written servo pulse width in microseconds. (was read_us() in first release)
+ attached()  - Returns true if there is a servo attached.
+ detach()    - Stops an attached servos from pulsing its i/o pin.
+
+*/
+#include "Configuration.h" 
+
+#ifdef NUM_SERVOS
+#include <avr/interrupt.h>
+#include <Arduino.h>
+
+#include "Servo.h"
+
+#define usToTicks(_us)    (( clockCyclesPerMicrosecond()* _us) / 8)     // converts microseconds to tick (assumes prescale of 8)  // 12 Aug 2009
+#define ticksToUs(_ticks) (( (unsigned)_ticks * 8)/ clockCyclesPerMicrosecond() ) // converts from ticks back to microseconds
+
+
+#define TRIM_DURATION       2                               // compensation ticks to trim adjust for digitalWrite delays // 12 August 2009
+
+//#define NBR_TIMERS        (MAX_SERVOS / SERVOS_PER_TIMER)
+
+static servo_t servos[MAX_SERVOS];                          // static array of servo structures
+static volatile int8_t Channel[_Nbr_16timers ];             // counter for the servo being pulsed for each timer (or -1 if refresh interval)
+
+uint8_t ServoCount = 0;                                     // the total number of attached servos
+
+
+// convenience macros
+#define SERVO_INDEX_TO_TIMER(_servo_nbr) ((timer16_Sequence_t)(_servo_nbr / SERVOS_PER_TIMER)) // returns the timer controlling this servo
+#define SERVO_INDEX_TO_CHANNEL(_servo_nbr) (_servo_nbr % SERVOS_PER_TIMER)       // returns the index of the servo on this timer
+#define SERVO_INDEX(_timer,_channel)  ((_timer*SERVOS_PER_TIMER) + _channel)     // macro to access servo index by timer and channel
+#define SERVO(_timer,_channel)  (servos[SERVO_INDEX(_timer,_channel)])            // macro to access servo class by timer and channel
+
+#define SERVO_MIN() (MIN_PULSE_WIDTH - this->min * 4)  // minimum value in uS for this servo
+#define SERVO_MAX() (MAX_PULSE_WIDTH - this->max * 4)  // maximum value in uS for this servo
+
+/************ static functions common to all instances ***********************/
+
+static inline void handle_interrupts(timer16_Sequence_t timer, volatile uint16_t *TCNTn, volatile uint16_t* OCRnA)
+{
+  if( Channel[timer] < 0 )
+    *TCNTn = 0; // channel set to -1 indicated that refresh interval completed so reset the timer
+  else{
+    if( SERVO_INDEX(timer,Channel[timer]) < ServoCount && SERVO(timer,Channel[timer]).Pin.isActive == true )
+      digitalWrite( SERVO(timer,Channel[timer]).Pin.nbr,LOW); // pulse this channel low if activated
+  }
+
+  Channel[timer]++;    // increment to the next channel
+  if( SERVO_INDEX(timer,Channel[timer]) < ServoCount && Channel[timer] < SERVOS_PER_TIMER) {
+    *OCRnA = *TCNTn + SERVO(timer,Channel[timer]).ticks;
+    if(SERVO(timer,Channel[timer]).Pin.isActive == true)     // check if activated
+      digitalWrite( SERVO(timer,Channel[timer]).Pin.nbr,HIGH); // its an active channel so pulse it high
+  }
+  else {
+    // finished all channels so wait for the refresh period to expire before starting over
+    if( ((unsigned)*TCNTn) + 4 < usToTicks(REFRESH_INTERVAL) )  // allow a few ticks to ensure the next OCR1A not missed
+      *OCRnA = (unsigned int)usToTicks(REFRESH_INTERVAL);
+    else
+      *OCRnA = *TCNTn + 4;  // at least REFRESH_INTERVAL has elapsed
+    Channel[timer] = -1; // this will get incremented at the end of the refresh period to start again at the first channel
+  }
+}
+
+#ifndef WIRING // Wiring pre-defines signal handlers so don't define any if compiling for the Wiring platform
+// Interrupt handlers for Arduino
+#if defined(_useTimer1)
+SIGNAL (TIMER1_COMPA_vect)
+{
+  handle_interrupts(_timer1, &TCNT1, &OCR1A);
+}
+#endif
+
+#if defined(_useTimer3)
+SIGNAL (TIMER3_COMPA_vect)
+{
+  handle_interrupts(_timer3, &TCNT3, &OCR3A);
+}
+#endif
+
+#if defined(_useTimer4)
+SIGNAL (TIMER4_COMPA_vect)
+{
+  handle_interrupts(_timer4, &TCNT4, &OCR4A);
+}
+#endif
+
+#if defined(_useTimer5)
+SIGNAL (TIMER5_COMPA_vect)
+{
+  handle_interrupts(_timer5, &TCNT5, &OCR5A);
+}
+#endif
+
+#elif defined WIRING
+// Interrupt handlers for Wiring
+#if defined(_useTimer1)
+void Timer1Service()
+{
+  handle_interrupts(_timer1, &TCNT1, &OCR1A);
+}
+#endif
+#if defined(_useTimer3)
+void Timer3Service()
+{
+  handle_interrupts(_timer3, &TCNT3, &OCR3A);
+}
+#endif
+#endif
+
+
+static void initISR(timer16_Sequence_t timer)
+{
+#if defined (_useTimer1)
+  if(timer == _timer1) {
+    TCCR1A = 0;             // normal counting mode
+    TCCR1B = _BV(CS11);     // set prescaler of 8
+    TCNT1 = 0;              // clear the timer count
+#if defined(__AVR_ATmega8__)|| defined(__AVR_ATmega128__)
+    TIFR |= _BV(OCF1A);      // clear any pending interrupts;
+    TIMSK |=  _BV(OCIE1A) ;  // enable the output compare interrupt
+#else
+    // here if not ATmega8 or ATmega128
+    TIFR1 |= _BV(OCF1A);     // clear any pending interrupts;
+    TIMSK1 |=  _BV(OCIE1A) ; // enable the output compare interrupt
+#endif
+#if defined(WIRING)
+    timerAttach(TIMER1OUTCOMPAREA_INT, Timer1Service);
+#endif
+  }
+#endif
+
+#if defined (_useTimer3)
+  if(timer == _timer3) {
+    TCCR3A = 0;             // normal counting mode
+    TCCR3B = _BV(CS31);     // set prescaler of 8
+    TCNT3 = 0;              // clear the timer count
+#if defined(__AVR_ATmega128__)
+    TIFR |= _BV(OCF3A);     // clear any pending interrupts;
+	ETIMSK |= _BV(OCIE3A);  // enable the output compare interrupt
+#else
+    TIFR3 = _BV(OCF3A);     // clear any pending interrupts;
+    TIMSK3 =  _BV(OCIE3A) ; // enable the output compare interrupt
+#endif
+#if defined(WIRING)
+    timerAttach(TIMER3OUTCOMPAREA_INT, Timer3Service);  // for Wiring platform only
+#endif
+  }
+#endif
+
+#if defined (_useTimer4)
+  if(timer == _timer4) {
+    TCCR4A = 0;             // normal counting mode
+    TCCR4B = _BV(CS41);     // set prescaler of 8
+    TCNT4 = 0;              // clear the timer count
+    TIFR4 = _BV(OCF4A);     // clear any pending interrupts;
+    TIMSK4 =  _BV(OCIE4A) ; // enable the output compare interrupt
+  }
+#endif
+
+#if defined (_useTimer5)
+  if(timer == _timer5) {
+    TCCR5A = 0;             // normal counting mode
+    TCCR5B = _BV(CS51);     // set prescaler of 8
+    TCNT5 = 0;              // clear the timer count
+    TIFR5 = _BV(OCF5A);     // clear any pending interrupts;
+    TIMSK5 =  _BV(OCIE5A) ; // enable the output compare interrupt
+  }
+#endif
+}
+
+static void finISR(timer16_Sequence_t timer)
+{
+    //disable use of the given timer
+#if defined WIRING   // Wiring
+  if(timer == _timer1) {
+    #if defined(__AVR_ATmega1281__)||defined(__AVR_ATmega2561__)
+    TIMSK1 &=  ~_BV(OCIE1A) ;  // disable timer 1 output compare interrupt
+    #else
+    TIMSK &=  ~_BV(OCIE1A) ;  // disable timer 1 output compare interrupt
+    #endif
+    timerDetach(TIMER1OUTCOMPAREA_INT);
+  }
+  else if(timer == _timer3) {
+    #if defined(__AVR_ATmega1281__)||defined(__AVR_ATmega2561__)
+    TIMSK3 &= ~_BV(OCIE3A);    // disable the timer3 output compare A interrupt
+    #else
+    ETIMSK &= ~_BV(OCIE3A);    // disable the timer3 output compare A interrupt
+    #endif
+    timerDetach(TIMER3OUTCOMPAREA_INT);
+  }
+#else
+    //For arduino - in future: call here to a currently undefined function to reset the timer
+#endif
+}
+
+static bool isTimerActive(timer16_Sequence_t timer)
+{
+  // returns true if any servo is active on this timer
+  for(uint8_t channel=0; channel < SERVOS_PER_TIMER; channel++) {
+    if(SERVO(timer,channel).Pin.isActive == true)
+      return true;
+  }
+  return false;
+}
+
+
+/****************** end of static functions ******************************/
+
+Servo::Servo()
+{
+  if( ServoCount < MAX_SERVOS) {
+    this->servoIndex = ServoCount++;                    // assign a servo index to this instance
+	servos[this->servoIndex].ticks = usToTicks(DEFAULT_PULSE_WIDTH);   // store default values  - 12 Aug 2009
+  }
+  else
+    this->servoIndex = INVALID_SERVO ;  // too many servos
+}
+
+uint8_t Servo::attach(int pin)
+{
+  return this->attach(pin, MIN_PULSE_WIDTH, MAX_PULSE_WIDTH);
+}
+
+uint8_t Servo::attach(int pin, int min, int max)
+{
+  if(this->servoIndex < MAX_SERVOS ) {
+#if defined (ENABLE_AUTO_BED_LEVELING) && (PROBE_SERVO_DEACTIVATION_DELAY > 0)
+    if (pin > 0) this->pin = pin; else pin = this->pin;
+#endif
+    pinMode( pin, OUTPUT) ;                                   // set servo pin to output
+    servos[this->servoIndex].Pin.nbr = pin;
+    // todo min/max check: abs(min - MIN_PULSE_WIDTH) /4 < 128
+    this->min  = (MIN_PULSE_WIDTH - min)/4; //resolution of min/max is 4 uS
+    this->max  = (MAX_PULSE_WIDTH - max)/4;
+    // initialize the timer if it has not already been initialized
+    timer16_Sequence_t timer = SERVO_INDEX_TO_TIMER(servoIndex);
+    if(isTimerActive(timer) == false)
+      initISR(timer);
+    servos[this->servoIndex].Pin.isActive = true;  // this must be set after the check for isTimerActive
+  }
+  return this->servoIndex ;
+}
+
+void Servo::detach()
+{
+  servos[this->servoIndex].Pin.isActive = false;
+  timer16_Sequence_t timer = SERVO_INDEX_TO_TIMER(servoIndex);
+  if(isTimerActive(timer) == false) {
+    finISR(timer);
+  }
+}
+
+void Servo::write(int value)
+{
+  if(value < MIN_PULSE_WIDTH)
+  {  // treat values less than 544 as angles in degrees (valid values in microseconds are handled as microseconds)
+    if(value < 0) value = 0;
+    if(value > 180) value = 180;
+    value = map(value, 0, 180, SERVO_MIN(),  SERVO_MAX());
+  }
+  this->writeMicroseconds(value);
+}
+
+void Servo::writeMicroseconds(int value)
+{
+  // calculate and store the values for the given channel
+  byte channel = this->servoIndex;
+  if( (channel < MAX_SERVOS) )   // ensure channel is valid
+  {
+    if( value < SERVO_MIN() )          // ensure pulse width is valid
+      value = SERVO_MIN();
+    else if( value > SERVO_MAX() )
+      value = SERVO_MAX();
+
+  	value = value - TRIM_DURATION;
+    value = usToTicks(value);  // convert to ticks after compensating for interrupt overhead - 12 Aug 2009
+
+    uint8_t oldSREG = SREG;
+    cli();
+    servos[channel].ticks = value;
+    SREG = oldSREG;
+  }
+}
+
+int Servo::read() // return the value as degrees
+{
+  return  map( this->readMicroseconds()+1, SERVO_MIN(), SERVO_MAX(), 0, 180);
+}
+
+int Servo::readMicroseconds()
+{
+  unsigned int pulsewidth;
+  if( this->servoIndex != INVALID_SERVO )
+    pulsewidth = ticksToUs(servos[this->servoIndex].ticks)  + TRIM_DURATION ;   // 12 aug 2009
+  else
+    pulsewidth  = 0;
+
+  return pulsewidth;
+}
+
+bool Servo::attached()
+{
+  return servos[this->servoIndex].Pin.isActive ;
+}
+
+#endif

Firmware/Servo.h

@@ -0,0 +1,135 @@
+/*
+  Servo.h - Interrupt driven Servo library for Arduino using 16 bit timers- Version 2
+  Copyright (c) 2009 Michael Margolis.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+/*
+
+  A servo is activated by creating an instance of the Servo class passing the desired pin to the attach() method.
+  The servos are pulsed in the background using the value most recently written using the write() method
+
+  Note that analogWrite of PWM on pins associated with the timer are disabled when the first servo is attached.
+  Timers are seized as needed in groups of 12 servos - 24 servos use two timers, 48 servos will use four.
+  The sequence used to seize timers is defined in timers.h
+
+  The methods are:
+
+   Servo - Class for manipulating servo motors connected to Arduino pins.
+
+   attach(pin )  - Attaches a servo motor to an i/o pin.
+   attach(pin, min, max  ) - Attaches to a pin setting min and max values in microseconds
+   default min is 544, max is 2400
+
+   write()     - Sets the servo angle in degrees.  (invalid angle that is valid as pulse in microseconds is treated as microseconds)
+   writeMicroseconds() - Sets the servo pulse width in microseconds
+   read()      - Gets the last written servo pulse width as an angle between 0 and 180.
+   readMicroseconds()   - Gets the last written servo pulse width in microseconds. (was read_us() in first release)
+   attached()  - Returns true if there is a servo attached.
+   detach()    - Stops an attached servos from pulsing its i/o pin.
+ */
+
+#ifndef Servo_h
+#define Servo_h
+
+#include <inttypes.h>
+
+/*
+ * Defines for 16 bit timers used with  Servo library
+ *
+ * If _useTimerX is defined then TimerX is a 16 bit timer on the current board
+ * timer16_Sequence_t enumerates the sequence that the timers should be allocated
+ * _Nbr_16timers indicates how many 16 bit timers are available.
+ *
+ */
+
+// Say which 16 bit timers can be used and in what order
+#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
+#define _useTimer5
+//#define _useTimer1
+#define _useTimer3
+#define _useTimer4
+//typedef enum { _timer5, _timer1, _timer3, _timer4, _Nbr_16timers } timer16_Sequence_t ;
+typedef enum { _timer5, _timer3, _timer4, _Nbr_16timers } timer16_Sequence_t ;
+
+#elif defined(__AVR_ATmega32U4__)
+//#define _useTimer1
+#define _useTimer3
+//typedef enum { _timer1, _Nbr_16timers } timer16_Sequence_t ;
+typedef enum { _timer3, _Nbr_16timers } timer16_Sequence_t ;
+
+#elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
+#define _useTimer3
+//#define _useTimer1
+//typedef enum { _timer3, _timer1, _Nbr_16timers } timer16_Sequence_t ;
+typedef enum { _timer3, _Nbr_16timers } timer16_Sequence_t ;
+
+#elif defined(__AVR_ATmega128__) ||defined(__AVR_ATmega1281__) || defined(__AVR_ATmega1284P__) ||defined(__AVR_ATmega2561__)
+#define _useTimer3
+//#define _useTimer1
+//typedef enum { _timer3, _timer1, _Nbr_16timers } timer16_Sequence_t ;
+typedef enum { _timer3, _Nbr_16timers } timer16_Sequence_t ;
+
+#else  // everything else
+//#define _useTimer1
+//typedef enum { _timer1, _Nbr_16timers } timer16_Sequence_t ;
+typedef enum { _Nbr_16timers } timer16_Sequence_t ;
+#endif
+
+#define Servo_VERSION           2     // software version of this library
+
+#define MIN_PULSE_WIDTH       544     // the shortest pulse sent to a servo
+#define MAX_PULSE_WIDTH      2400     // the longest pulse sent to a servo
+#define DEFAULT_PULSE_WIDTH  1500     // default pulse width when servo is attached
+#define REFRESH_INTERVAL    20000     // minimum time to refresh servos in microseconds
+
+#define SERVOS_PER_TIMER       12     // the maximum number of servos controlled by one timer
+#define MAX_SERVOS   (_Nbr_16timers  * SERVOS_PER_TIMER)
+
+#define INVALID_SERVO         255     // flag indicating an invalid servo index
+
+typedef struct  {
+  uint8_t nbr        :6 ;             // a pin number from 0 to 63
+  uint8_t isActive   :1 ;             // true if this channel is enabled, pin not pulsed if false
+} ServoPin_t   ;
+
+typedef struct {
+  ServoPin_t Pin;
+  unsigned int ticks;
+} servo_t;
+
+class Servo
+{
+public:
+  Servo();
+  uint8_t attach(int pin);           // attach the given pin to the next free channel, sets pinMode, returns channel number or 0 if failure
+  uint8_t attach(int pin, int min, int max); // as above but also sets min and max values for writes.
+  void detach();
+  void write(int value);             // if value is < 200 it is treated as an angle, otherwise as pulse width in microseconds
+  void writeMicroseconds(int value); // Write pulse width in microseconds
+  int read();                        // returns current pulse width as an angle between 0 and 180 degrees
+  int readMicroseconds();            // returns current pulse width in microseconds for this servo (was read_us() in first release)
+  bool attached();                   // return true if this servo is attached, otherwise false
+#if defined (ENABLE_AUTO_BED_LEVELING) && (PROBE_SERVO_DEACTIVATION_DELAY > 0)
+  int pin;                           // store the hardware pin of the servo
+#endif
+private:
+   uint8_t servoIndex;               // index into the channel data for this servo
+   int8_t min;                       // minimum is this value times 4 added to MIN_PULSE_WIDTH
+   int8_t max;                       // maximum is this value times 4 added to MAX_PULSE_WIDTH
+};
+
+#endif

Firmware/SpoolJoin.cpp

@@ -30,9 +30,9 @@ void SpoolJoin::toggleSpoolJoin()
 {
     if (eeprom_read_byte((uint8_t*)EEPROM_SPOOL_JOIN) == (uint8_t)EEPROM::Disabled)
     {
-        eeprom_update_byte_notify((uint8_t*)EEPROM_SPOOL_JOIN, (uint8_t)EEPROM::Enabled);
+        eeprom_write_byte((uint8_t*)EEPROM_SPOOL_JOIN, (uint8_t)EEPROM::Enabled);
     } else {
-        eeprom_update_byte_notify((uint8_t*)EEPROM_SPOOL_JOIN, (uint8_t)EEPROM::Disabled);
+        eeprom_write_byte((uint8_t*)EEPROM_SPOOL_JOIN, (uint8_t)EEPROM::Disabled);
     }
 }
 
@@ -55,7 +55,7 @@ uint8_t SpoolJoin::nextSlot()
     SERIAL_ECHOPGM("SpoolJoin: ");
     SERIAL_ECHO((int)currentMMUSlot);
 
-    if (currentMMUSlot >= MMU_FILAMENT_COUNT-1) currentMMUSlot = 0;
+    if (currentMMUSlot >= 4) currentMMUSlot = 0;
     else currentMMUSlot++;
 
     SERIAL_ECHOPGM(" -> ");

Firmware/Tcodes.cpp

@@ -11,12 +11,12 @@
 
 static const char duplicate_Tcode_ignored[] PROGMEM = "Duplicate T-code ignored.";
 
-inline bool IsInvalidTCode(char *const s, uint8_t i) {
-    return ((s[i] < '0' || s[i] > '4') && s[i] != '?' && s[i] != 'x' && s[i] != 'c');
+inline bool IsInvalidTCode(char *const s, uint8_t i) { 
+    return ((s[i] < '0' || s[i] > '4') && s[i] != '?' && s[i] != 'x' && s[i] != 'c'); 
 }
 
-inline void TCodeInvalid() {
-    SERIAL_ECHOLNPGM("Invalid T code.");
+inline void TCodeInvalid() { 
+    SERIAL_ECHOLNPGM("Invalid T code."); 
 }
 
 void TCodes(char *const strchr_pointer, const uint8_t codeValue) {
@@ -31,7 +31,7 @@ void TCodes(char *const strchr_pointer, const uint8_t codeValue) {
     } else if (strchr_pointer[index] == 'x' || strchr_pointer[index] == '?'){
         // load to extruder gears; if mmu is not present do nothing
         if (MMU2::mmu2.Enabled()) {
-            MMU2::mmu2.tool_change(strchr_pointer[index], choose_menu_P(_T(MSG_SELECT_FILAMENT), MSG_FILAMENT));
+            MMU2::mmu2.tool_change(strchr_pointer[index], choose_menu_P(_T(MSG_SELECT_FILAMENT), _T(MSG_FILAMENT)));
         }
     } else if (strchr_pointer[index] == 'c'){
         // load from extruder gears to nozzle (nozzle should be preheated)
@@ -40,7 +40,7 @@ void TCodes(char *const strchr_pointer, const uint8_t codeValue) {
         }
     } else { // Process T0 ... T4
         if (MMU2::mmu2.Enabled()) {
-            if (codeValue == MMU2::mmu2.get_current_tool()){
+            if (codeValue == MMU2::mmu2.get_current_tool()){ 
                 // don't execute the same T-code twice in a row
                 puts_P(duplicate_Tcode_ignored);
             } else {

Firmware/backlight.cpp

@@ -17,7 +17,7 @@ bool backlightSupport = 0; //only if it's true will any of the settings be visib
 uint8_t backlightLevel_HIGH = 0;
 uint8_t backlightLevel_LOW = 0;
 uint8_t backlightMode = BACKLIGHT_MODE_BRIGHT;
-int16_t backlightTimer_period = LCD_BACKLIGHT_TIMEOUT;
+int16_t backlightTimer_period = 10;
 LongTimer backlightTimer;
 
 static void backlightTimer_reset() //used for resetting the timer and waking the display. Triggered on user interactions.
@@ -32,7 +32,7 @@ void force_bl_on(bool section_start)
     if (section_start)
     {
         backlightMode = BACKLIGHT_MODE_BRIGHT;
-        if (backlightLevel_HIGH < LCD_BACKLIGHT_FORCE_ON) backlightLevel_HIGH = LCD_BACKLIGHT_FORCE_ON;
+        if (backlightLevel_HIGH < 30) backlightLevel_HIGH = 30;
     }
     else
     {
@@ -45,7 +45,7 @@ void force_bl_on(bool section_start)
 void backlight_wake(const uint8_t flashNo)
 {
     if (!backlightSupport) return;
-
+    
     if (flashNo)
     {
         uint8_t backlightMode_bck = backlightMode;
@@ -62,16 +62,16 @@ void backlight_wake(const uint8_t flashNo)
 
 void backlight_save() //saves all backlight data to eeprom.
 {
-    eeprom_update_byte_notify((uint8_t *)EEPROM_BACKLIGHT_LEVEL_HIGH, backlightLevel_HIGH);
-    eeprom_update_byte_notify((uint8_t *)EEPROM_BACKLIGHT_LEVEL_LOW, backlightLevel_LOW);
-    eeprom_update_byte_notify((uint8_t *)EEPROM_BACKLIGHT_MODE, backlightMode);
-    eeprom_update_word_notify((uint16_t *)EEPROM_BACKLIGHT_TIMEOUT, backlightTimer_period);
+    eeprom_update_byte((uint8_t *)EEPROM_BACKLIGHT_LEVEL_HIGH, backlightLevel_HIGH);
+    eeprom_update_byte((uint8_t *)EEPROM_BACKLIGHT_LEVEL_LOW, backlightLevel_LOW);
+    eeprom_update_byte((uint8_t *)EEPROM_BACKLIGHT_MODE, backlightMode);
+    eeprom_update_word((uint16_t *)EEPROM_BACKLIGHT_TIMEOUT, backlightTimer_period);
 }
 
 void backlight_update()
 {
     if (!backlightSupport) return;
-
+    
     if (backlightMode == BACKLIGHT_MODE_AUTO)
     {
         if (backlightTimer.expired((uint32_t)backlightTimer_period * 1000ul)) analogWrite(LCD_BL_PIN, backlightLevel_LOW);
@@ -93,9 +93,9 @@ void backlight_init()
 
     //initialize backlight
     backlightMode = eeprom_init_default_byte((uint8_t *)EEPROM_BACKLIGHT_MODE, BACKLIGHT_MODE_AUTO);
-    backlightLevel_HIGH = eeprom_init_default_byte((uint8_t *)EEPROM_BACKLIGHT_LEVEL_HIGH, LCD_BACKLIGHT_LEVEL_HIGH);
-    backlightLevel_LOW = eeprom_init_default_byte((uint8_t *)EEPROM_BACKLIGHT_LEVEL_LOW, LCD_BACKLIGHT_LEVEL_LOW);
-    backlightTimer_period = eeprom_init_default_word((uint16_t *)EEPROM_BACKLIGHT_TIMEOUT, LCD_BACKLIGHT_TIMEOUT); // in seconds
+    backlightLevel_HIGH = eeprom_init_default_byte((uint8_t *)EEPROM_BACKLIGHT_LEVEL_HIGH, 130);
+    backlightLevel_LOW = eeprom_init_default_byte((uint8_t *)EEPROM_BACKLIGHT_LEVEL_LOW, 50);
+    backlightTimer_period = eeprom_init_default_word((uint16_t *)EEPROM_BACKLIGHT_TIMEOUT, 10); // in seconds
 
     SET_OUTPUT(LCD_BL_PIN);
     backlightTimer_reset();

Firmware/cardreader.cpp

@@ -24,7 +24,7 @@ CardReader::CardReader()
    filesize = 0;
    sdpos = 0;
    sdprinting = false;
-   mounted = false;
+   cardOK = false;
    saving = false;
    logging = false;
    workDirDepth = 0;
@@ -35,20 +35,20 @@ CardReader::CardReader()
    lastnr=0;
   //power to SD reader
   #if SDPOWER > -1
-    SET_OUTPUT(SDPOWER);
+    SET_OUTPUT(SDPOWER); 
     WRITE(SDPOWER,HIGH);
   #endif //SDPOWER
-
+  
   autostart_atmillis.start(); // reset timer
 }
 
 char *createFilename(char *buffer,const dir_t &p) //buffer>12characters
 {
   char *pos=buffer;
-  for (uint8_t i = 0; i < 11; i++)
+  for (uint8_t i = 0; i < 11; i++) 
   {
     if (p.name[i] == ' ')continue;
-    if (i == 8)
+    if (i == 8) 
     {
       *pos++='.';
     }
@@ -74,7 +74,7 @@ void CardReader::lsDive(const char *prepend, SdFile parent, const char * const m
 		_incrementer() {recursionCnt++;}
 		~_incrementer() {recursionCnt--;}
 	} recursionCntIncrementer;
-
+	
 	dir_t p;
 	uint8_t cnt = 0;
 		// Read the next entry from a directory
@@ -103,10 +103,10 @@ void CardReader::lsDive(const char *prepend, SdFile parent, const char * const m
 				// Serial.print(path);
 				// Get a new directory object using the full path
 				// and dive recursively into it.
-
+				
 				if (lsParams.LFN)
 					printf_P(PSTR("DIR_ENTER: %s \"%s\"\n"), path, longFilename[0] ? longFilename : lfilename);
-
+				
 				SdFile dir;
 				if (!dir.open(parent, lfilename, O_READ)) {
 					//SERIAL_ECHO_START();
@@ -115,7 +115,7 @@ void CardReader::lsDive(const char *prepend, SdFile parent, const char * const m
 				}
 				lsDive(path, dir, NULL, lsAction, lsParams);
 				// close() is done automatically by destructor of SdFile
-
+				
 				if (lsParams.LFN)
 					puts_P(PSTR("DIR_EXIT"));
 			}
@@ -126,15 +126,15 @@ void CardReader::lsDive(const char *prepend, SdFile parent, const char * const m
 					case LS_Count:
 						nrFiles++;
 						break;
-
+					
 					case LS_SerialPrint:
 						createFilename(filename, p);
 						SERIAL_PROTOCOL(prepend);
 						SERIAL_PROTOCOL(filename);
-
+						
 						MYSERIAL.write(' ');
 						SERIAL_PROTOCOL(p.fileSize);
-
+						
 						if (lsParams.timestamp)
 						{
 							crmodDate = p.lastWriteDate;
@@ -145,14 +145,14 @@ void CardReader::lsDive(const char *prepend, SdFile parent, const char * const m
 							}
 							printf_P(PSTR(" %#lx"), ((uint32_t)crmodDate << 16) | crmodTime);
 						}
-
+						
 						if (lsParams.LFN)
 							printf_P(PSTR(" \"%s\""), LONGEST_FILENAME);
-
+						
 						SERIAL_PROTOCOLLN();
 						manage_heater();
 						break;
-
+				
 					case LS_GetFilename:
 						//SERIAL_ECHOPGM("File: ");
 						createFilename(filename, p);
@@ -198,9 +198,9 @@ void CardReader::ls(ls_param params)
 }
 
 
-void CardReader::mount(bool doPresort/* = true*/)
+void CardReader::initsd(bool doPresort/* = true*/)
 {
-  mounted = false;
+  cardOK = false;
   if(root.isOpen())
     root.close();
 #ifdef SDSLOW
@@ -219,28 +219,40 @@ void CardReader::mount(bool doPresort/* = true*/)
     SERIAL_ERROR_START;
     SERIAL_ERRORLNRPGM(_n("volume.init failed"));////MSG_SD_VOL_INIT_FAIL
   }
-  else if (!root.openRoot(&volume))
+  else if (!root.openRoot(&volume)) 
   {
     SERIAL_ERROR_START;
     SERIAL_ERRORLNRPGM(_n("openRoot failed"));////MSG_SD_OPENROOT_FAIL
   }
-  else
+  else 
   {
-    mounted = true;
+    cardOK = true;
     SERIAL_ECHO_START;
     SERIAL_ECHOLNRPGM(_n("SD card ok"));////MSG_SD_CARD_OK
   }
+  workDir=root;
+  curDir=&root;
+  workDirDepth = 0;
 
-  if (mounted)
+  #ifdef SDCARD_SORT_ALPHA
+  if (doPresort)
+    presort();
+  #endif
+
+  /*
+  if(!workDir.openRoot(&volume))
   {
-    cdroot(doPresort);
+    SERIAL_ECHOLNPGM(MSG_SD_WORKDIR_FAIL);
   }
+  */
+  
 }
 
-void __attribute__((noinline)) CardReader::cdroot(bool doPresort)
+void CardReader::setroot(bool doPresort)
 {
   workDir=root;
   workDirDepth = 0;
+  
   curDir=&workDir;
 #ifdef SDCARD_SORT_ALPHA
 	if (doPresort)
@@ -252,14 +264,14 @@ void __attribute__((noinline)) CardReader::cdroot(bool doPresort)
 void CardReader::release()
 {
   sdprinting = false;
-  mounted = false;
+  cardOK = false;
   SERIAL_ECHO_START;
   SERIAL_ECHOLNRPGM(_n("SD card released"));////MSG_SD_CARD_RELEASED
 }
 
 void CardReader::startFileprint()
 {
-  if(mounted)
+  if(cardOK)
   {
     sdprinting = true;
     SetPrinterState(PrinterState::IsSDPrinting); //set printer state to hide LCD menu
@@ -276,7 +288,7 @@ void CardReader::openLogFile(const char* name)
 }
 
 void CardReader::getDirName(char* name, uint8_t level)
-{
+{	
 		workDirParents[level].getFilename(name);
 }
 
@@ -291,7 +303,7 @@ void CardReader::getAbsFilename(char *t)
   for(uint8_t i=0;i<workDirDepth;i++)
   {
     workDirParents[i].getFilename(t); //SDBaseFile.getfilename!
-    while(*t!=0 && cnt< MAXPATHNAMELENGTH)
+    while(*t!=0 && cnt< MAXPATHNAMELENGTH) 
     {t++;cnt++;}  //crawl counter forward.
   }
   if(cnt < MAXPATHNAMELENGTH - FILENAME_LENGTH)
@@ -334,7 +346,7 @@ bool CardReader::diveSubfolder (const char *&fileName)
     const char *dirname_start, *dirname_end;
     if (fileName[0] == '/') // absolute path
     {
-        cdroot(false);
+        setroot(false);
         dirname_start = fileName + 1;
         while (*dirname_start)
         {
@@ -384,9 +396,9 @@ static const char ofSDPrinting[] PROGMEM = "SD-PRINTING";
 static const char ofWritingToFile[] PROGMEM = "Writing to file: ";
 
 void CardReader::openFileReadFilteredGcode(const char* name, bool replace_current/* = false*/){
-    if(!mounted)
+    if(!cardOK)
         return;
-
+    
     if(file.isOpen()){  //replacing current file by new file, or subfile call
         if(!replace_current){
             if((int)file_subcall_ctr>(int)SD_PROCEDURE_DEPTH-1){
@@ -396,15 +408,15 @@ void CardReader::openFileReadFilteredGcode(const char* name, bool replace_curren
                 kill(ofKill);
                 return;
             }
-
+            
             SERIAL_ECHO_START;
             SERIAL_ECHORPGM(ofSubroutineCallTgt);
             SERIAL_ECHO(name);
             SERIAL_ECHORPGM(ofParent);
-
+            
             //store current filename and position
             getAbsFilename(filenames[file_subcall_ctr]);
-
+            
             SERIAL_ECHO(filenames[file_subcall_ctr]);
             SERIAL_ECHORPGM(ofPos);
             SERIAL_ECHOLN(sdpos);
@@ -423,11 +435,11 @@ void CardReader::openFileReadFilteredGcode(const char* name, bool replace_curren
         SERIAL_ECHOLN(name);
     }
     sdprinting = false;
-
+  
     const char *fname=name;
     if (!diveSubfolder(fname))
       return;
-
+  
     if (file.openFilteredGcode(curDir, fname)) {
         getfilename(0, fname);
         filesize = file.fileSize();
@@ -436,7 +448,7 @@ void CardReader::openFileReadFilteredGcode(const char* name, bool replace_curren
         SERIAL_PROTOCOLRPGM(ofSize);////MSG_SD_SIZE
         SERIAL_PROTOCOLLN(filesize);
         sdpos = 0;
-
+        
         SERIAL_PROTOCOLLNRPGM(ofFileSelected);////MSG_SD_FILE_SELECTED
         lcd_setstatuspgm(ofFileSelected);
         scrollstuff = 0;
@@ -449,7 +461,7 @@ void CardReader::openFileReadFilteredGcode(const char* name, bool replace_curren
 
 void CardReader::openFileWrite(const char* name)
 {
-    if(!mounted)
+    if(!cardOK)
         return;
     if(file.isOpen()){  //replacing current file by new file, or subfile call
 #if 0
@@ -463,15 +475,15 @@ void CardReader::openFileWrite(const char* name)
             kill(ofKill);
             return;
         }
-
+        
         SERIAL_ECHO_START;
         SERIAL_ECHORPGM(ofSubroutineCallTgt);
         SERIAL_ECHO(name);
         SERIAL_ECHORPGM(ofParent);
-
+        
         //store current filename and position
         getAbsFilename(filenames[file_subcall_ctr]);
-
+        
         SERIAL_ECHO(filenames[file_subcall_ctr]);
         SERIAL_ECHORPGM(ofPos);
         SERIAL_ECHOLN(sdpos);
@@ -488,11 +500,11 @@ void CardReader::openFileWrite(const char* name)
         SERIAL_ECHOLN(name);
     }
     sdprinting = false;
-
+    
     const char *fname=name;
     if (!diveSubfolder(fname))
       return;
-
+    
     //write
     if (!file.open(curDir, fname, O_CREAT | O_APPEND | O_WRITE | O_TRUNC)){
         SERIAL_PROTOCOLRPGM(MSG_SD_OPEN_FILE_FAIL);
@@ -504,7 +516,7 @@ void CardReader::openFileWrite(const char* name)
         SERIAL_PROTOCOLRPGM(ofWritingToFile);////MSG_SD_WRITE_TO_FILE
         printAbsFilenameFast();
         SERIAL_PROTOCOLLN();
-
+        
         SERIAL_PROTOCOLLNRPGM(ofFileSelected);////MSG_SD_FILE_SELECTED
         lcd_setstatuspgm(ofFileSelected);
         scrollstuff = 0;
@@ -513,7 +525,7 @@ void CardReader::openFileWrite(const char* name)
 
 void CardReader::removeFile(const char* name)
 {
-    if(!mounted) return;
+    if(!cardOK) return;
     file.close();
     sdprinting = false;
 
@@ -521,7 +533,7 @@ void CardReader::removeFile(const char* name)
     if (!diveSubfolder(fname))
       return;
 
-    if (file.remove(curDir, fname))
+    if (file.remove(curDir, fname)) 
     {
       SERIAL_PROTOCOLPGM("File deleted:");
       SERIAL_PROTOCOLLN(fname);
@@ -536,7 +548,7 @@ void CardReader::removeFile(const char* name)
       SERIAL_PROTOCOL(fname);
       SERIAL_PROTOCOLLN('.');
     }
-
+  
 }
 
 uint32_t CardReader::getFileSize()
@@ -546,7 +558,7 @@ uint32_t CardReader::getFileSize()
 
 void CardReader::getStatus(bool arg_P)
 {
-    if (printingIsPaused())
+    if (print_job_timer.isPaused())
     {
         if (saved_printing && (saved_printing_type == PowerPanic::PRINT_TYPE_SD))
             SERIAL_PROTOCOLLNPGM("SD print paused");
@@ -562,7 +574,7 @@ void CardReader::getStatus(bool arg_P)
         }
         else
             SERIAL_PROTOCOLLN(LONGEST_FILENAME);
-
+        
         SERIAL_PROTOCOLRPGM(_N("SD printing byte "));////MSG_SD_PRINTING_BYTE
         SERIAL_PROTOCOL(sdpos);
         SERIAL_PROTOCOL('/');
@@ -605,7 +617,7 @@ void CardReader::checkautostart(bool force)
 {
   // The SD start is delayed because otherwise the serial cannot answer
   // fast enough to make contact with the host software.
-  static bool autostart_stilltocheck = true;
+  static bool autostart_stilltocheck = true; 
   if(!force)
   {
     if(!autostart_stilltocheck)
@@ -614,13 +626,13 @@ void CardReader::checkautostart(bool force)
       return;
   }
   autostart_stilltocheck = false;
-  if(!mounted)
+  if(!cardOK)
   {
-    mount();
-    if(!mounted) //fail
+    initsd();
+    if(!cardOK) //fail
       return;
   }
-
+  
   char autoname[30];
   sprintf_P(autoname, PSTR("auto%i.g"), lastnr);
   for(int8_t i=0;i<(int8_t)strlen(autoname);i++)
@@ -628,9 +640,9 @@ void CardReader::checkautostart(bool force)
   dir_t p;
 
   root.rewind();
-
+  
   bool found=false;
-  while (root.readDir(p, NULL) > 0)
+  while (root.readDir(p, NULL) > 0) 
   {
     for(int8_t i=0;i<(int8_t)strlen((char*)p.name);i++)
     p.name[i]=tolower(p.name[i]);
@@ -657,17 +669,17 @@ void CardReader::closefile(bool store_location)
 {
   file.sync();
   file.close();
-  saving = false;
+  saving = false; 
   logging = false;
-
+  
   if(store_location)
   {
     //future: store printer state, filename and position for continuing a stopped print
     // so one can unplug the printer and continue printing the next day.
-
+    
   }
 
-
+  
 }
 
 void CardReader::getfilename(uint16_t nr, const char * const match/*=NULL*/)
@@ -676,7 +688,7 @@ void CardReader::getfilename(uint16_t nr, const char * const match/*=NULL*/)
   nrFiles=nr;
   curDir->rewind();
   lsDive("",*curDir,match, LS_GetFilename);
-
+  
 }
 
 void CardReader::getfilename_simple(uint16_t entry, const char * const match/*=NULL*/)
@@ -709,10 +721,10 @@ bool CardReader::chdir(const char * relpath, bool doPresort)
 {
   SdFile newfile;
   SdFile *parent=&root;
-
+  
   if(workDir.isOpen())
     parent=&workDir;
-
+  
   if(!newfile.open(*parent,relpath, O_READ) || ((workDirDepth + 1) >= MAX_DIR_DEPTH))
   {
    SERIAL_ECHO_START;
@@ -789,7 +801,7 @@ void CardReader::getfilename_afterMaxSorting(uint16_t entry, const char * const
 void CardReader::presort() {
 	// Throw away old sort index
 	flush_presort();
-
+	
 	if (IS_SD_INSERTED == false) return; //sorting is not used in farm mode
 	uint8_t sdSort = eeprom_read_byte((uint8_t*)EEPROM_SD_SORT);
 
@@ -802,13 +814,13 @@ void CardReader::presort() {
 		// If you use folders to organize, 20 may be enough
 		if (fileCnt > SDSORT_LIMIT) {
 			if ((sdSort != SD_SORT_NONE) && !farm_mode) {
-				lcd_show_fullscreen_message_and_wait_P(_T(MSG_FILE_CNT));
+				lcd_show_fullscreen_message_and_wait_P(_i("Some files will not be sorted. Max. No. of files in 1 folder for sorting is 100."));////MSG_FILE_CNT c=20 r=6
 			}
 			fileCnt = SDSORT_LIMIT;
 		}
 
 		sort_count = fileCnt;
-
+		
 		// Init sort order.
 		for (uint16_t i = 0; i < fileCnt; i++) {
 			if (!IS_SD_INSERTED) return;
@@ -867,14 +879,14 @@ void CardReader::presort() {
         uint16_t j = i;
         for (; j > 0; --j){
           if (!IS_SD_INSERTED) return;
-
+          
           #ifdef SORTING_DUMP
           for (uint16_t z = 0; z < fileCnt; z++){
             printf_P(PSTR("%2u "), sort_entries[z]);
           }
           MYSERIAL.println();
           #endif
-
+          
           manage_heater();
           const uint16_t o2 = sort_entries[j - 1];
 
@@ -894,7 +906,7 @@ void CardReader::presort() {
           } else {
             #ifdef SORTING_DUMP
             puts_P(PSTR("shift"));
-            #endif
+            #endif            
             sort_entries[j] = o2;
           }
         }
@@ -957,7 +969,7 @@ void CardReader::presort() {
 						#ifdef SORTING_DUMP
 						puts_P(PSTR("swap"));
 						#endif
-
+						
 						sort_entries[j] = o2;
 						sort_entries[j + 1] = o1;
 						didSwap = true;
@@ -966,11 +978,11 @@ void CardReader::presort() {
 				if (!didSwap) break;
 			} //end of bubble sort loop
 #endif
-
+			
 #ifdef SORTING_SPEEDTEST
 			printf_P(PSTR("sortingSpeedtestTimer:%lu\n"), sortingSpeedtestTimer.elapsed());
 #endif //SORTING_SPEEDTEST
-
+			
 			#ifdef SORTING_DUMP
 			for (uint16_t z = 0; z < fileCnt; z++)
 				printf_P(PSTR("%2u "), sort_entries[z]);

Firmware/cardreader.h

@@ -12,7 +12,7 @@ class CardReader
 {
 public:
   CardReader();
-
+  
   enum LsAction : uint8_t
   {
     LS_SerialPrint,
@@ -26,14 +26,14 @@ public:
     inline ls_param():LFN(0), timestamp(0) { }
     inline ls_param(bool LFN, bool timestamp):LFN(LFN), timestamp(timestamp) { }
   } __attribute__((packed));
-
-  void mount(bool doPresort = true);
+  
+  void initsd(bool doPresort = true);
   void write_command(char *buf);
   void write_command_no_newline(char *buf);
   //files auto[0-9].g on the sd card are performed in a row
   //this is to delay autostart and hence the initialisaiton of the sd card to some seconds after the normal init, so the device is available quick after a reset
 
-  void checkautostart(bool x);
+  void checkautostart(bool x); 
   void openFileWrite(const char* name);
   void openFileReadFilteredGcode(const char* name, bool replace_current = false);
   void openLogFile(const char* name);
@@ -49,16 +49,17 @@ public:
   void getfilename_simple(uint16_t entry, const char * const match = NULL);
   void getfilename_next(uint32_t position, const char * const match = NULL);
   uint16_t getnrfilenames();
-
+  
   void getAbsFilename(char *t);
   void printAbsFilenameFast();
   void getDirName(char* name, uint8_t level);
   uint8_t getWorkDirDepth();
+  
 
   void ls(ls_param params);
   bool chdir(const char * relpath, bool doPresort);
   void updir();
-  void cdroot(bool doPresort);
+  void setroot(bool doPresort);
 
   #ifdef SDCARD_SORT_ALPHA
      void presort();
@@ -89,8 +90,8 @@ public:
 public:
   bool saving;
   bool logging;
-  bool sdprinting;
-  bool mounted;
+  bool sdprinting ;  
+  bool cardOK ;
   char filename[FILENAME_LENGTH];
   // There are scenarios when simple modification time is not enough (on MS Windows)
   // Therefore these timestamps hold the most recent one of creation/modification date/times
@@ -146,7 +147,7 @@ extern CardReader card;
 #define IS_SD_PRINTING (card.sdprinting)
 
 #if (SDCARDDETECT > -1)
-# ifdef SDCARDDETECTINVERTED
+# ifdef SDCARDDETECTINVERTED 
 #  define IS_SD_INSERTED (READ(SDCARDDETECT)!=0)
 # else
 #  define IS_SD_INSERTED (READ(SDCARDDETECT)==0)

Firmware/cmdqueue.cpp

@@ -8,7 +8,6 @@
 #include "messages.h"
 #include "language.h"
 #include "stopwatch.h"
-#include "power_panic.h"
 
 // Reserve BUFSIZE lines of length MAX_CMD_SIZE plus CMDBUFFER_RESERVE_FRONT.
 char cmdbuffer[BUFSIZE * (MAX_CMD_SIZE + 1) + CMDBUFFER_RESERVE_FRONT];
@@ -108,7 +107,7 @@ void cmdqueue_reset()
 	//commands are removed from command queue after process_command() function is finished
 	//reseting command queue and enqueing new commands during some (usually long running) command processing would cause that new commands are immediately removed from queue (or damaged)
 	//this will ensure that all new commands which are enqueued after cmdqueue reset, will be always executed
-	cmdbuffer_front_already_processed = true;
+	cmdbuffer_front_already_processed = true; 
 }
 
 // How long a string could be pushed to the front of the command queue?
@@ -354,7 +353,7 @@ void enquecommand_front(const char *cmd, bool from_progmem)
 void repeatcommand_front()
 {
     cmdbuffer_front_already_processed = true;
-}
+} 
 
 void get_command()
 {
@@ -368,8 +367,8 @@ void get_command()
 	}
 
   // start of serial line processing loop
-  while (((MYSERIAL.available() > 0 && !saved_printing) || (MYSERIAL.available() > 0 && printingIsPaused())) && !cmdqueue_serial_disabled) {  //is print is saved (crash detection or filament detection), dont process data from serial line
-
+  while (((MYSERIAL.available() > 0 && !saved_printing) || (MYSERIAL.available() > 0 && print_job_timer.isPaused())) && !cmdqueue_serial_disabled) {  //is print is saved (crash detection or filament detection), dont process data from serial line
+	
 #ifdef ENABLE_MEATPACK
     // MeatPack Changes
     // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -484,7 +483,6 @@ void get_command()
         if ((*cmd_start == 'G') && (GetPrinterState() != PrinterState::IsSDPrinting)) {
             usb_timer.start();
             SetPrinterState(PrinterState::IsHostPrinting); //set printer state busy printing to hide LCD menu while USB printing
-            eeprom_update_byte_notify((uint8_t*)EEPROM_UVLO, PowerPanic::NO_PENDING_RECOVERY);
         }
         if (allow_when_stopped == false && Stopped == true) {
             // Stopped can be set either during error states (thermal error: cannot continue), or
@@ -596,9 +594,9 @@ void get_command()
       {
         // This is either an empty line, or a line with just a comment.
         // Continue to the following line, and continue accumulating the number of bytes
-        // read from the sdcard into sd_count,
+        // read from the sdcard into sd_count, 
         // so that the length of the already read empty lines and comments will be added
-        // to the following non-empty line.
+        // to the following non-empty line. 
         return; // prevent cycling indefinitely - let manage_heaters do their job
       }
       // The new command buffer could be updated non-atomically, because it is not yet considered
@@ -635,7 +633,7 @@ void get_command()
 
       comment_mode = false; //for new command
       serial_count = 0; //clear buffer
-
+    
       if(card.eof()) break;
 
       // The following line will reserve buffer space if available.
@@ -670,9 +668,7 @@ void get_command()
           sprintf_P(time, PSTR("%i hours %i minutes"),hours, minutes);
           SERIAL_ECHO_START;
           SERIAL_ECHOLN(time);
-#ifndef SHOW_FILENAME_AFTER_FINISH
           lcd_setstatus(time);
-#endif //SHOW_FILENAME_AFTER_FINISH
           card.printingHasFinished();
           card.checkautostart(true);
 

Firmware/cmdqueue.h

@@ -4,9 +4,9 @@
 #include "Marlin.h"
 
 // String circular buffer. Commands may be pushed to the buffer from both sides:
-// Chained commands will be pushed to the front, interactive (from LCD menu)
+// Chained commands will be pushed to the front, interactive (from LCD menu) 
 // and printing commands (from serial line or from SD card) are pushed to the tail.
-// First character of each entry indicates the type of the entry:
+// First character of each entry indicates the type of the entry: 
 #define CMDBUFFER_CURRENT_TYPE_UNKNOWN  0
 // Command in cmdbuffer was sent over USB.
 #define CMDBUFFER_CURRENT_TYPE_USB      1
@@ -16,8 +16,8 @@
 #define CMDBUFFER_CURRENT_TYPE_UI       3
 // Command in cmdbuffer was generated by another G-code.
 #define CMDBUFFER_CURRENT_TYPE_CHAINED  4
-// Command has been processed and its SD card length has been possibly pushed
-// to the planner queue, but not yet removed from the cmdqueue.
+// Command has been processed and its SD card length has been possibly pushed 
+// to the planner queue, but not yet removed from the cmdqueue. 
 // This is a temporary state to reduce stepper interrupt locking time.
 #define CMDBUFFER_CURRENT_TYPE_TO_BE_REMOVED 5
 //Command in cmdbuffer was sent over USB and contains line number

Firmware/config.h

@@ -65,7 +65,7 @@
 
 #define LANG_SIZE_RESERVED     0x3500 // reserved space for secondary language (13568 bytes).
                                       // 0x3D00 Maximum 15616 bytes as it depends on xflash_layout.h
-                                      // 16 Languages max. per group including stock
+                                      // 16 Languages max. per group including stock 
 
 #if (LANG_SIZE_RESERVED % 256)
   #error "LANG_SIZE_RESERVED should be a multiple of a page size"

Firmware/eeprom.cpp

@@ -26,13 +26,13 @@ void eeprom_init()
     eeprom_init_default_dword((uint32_t*)EEPROM_MMU_MATERIAL_CHANGES, 0);
     if (eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)) == EEPROM_EMPTY_VALUE)
     {
-        eeprom_update_byte_notify(&(EEPROM_Sheets_base->active_sheet), 0);
+        eeprom_update_byte(&(EEPROM_Sheets_base->active_sheet), 0);
         // When upgrading from version older version (before multiple sheets were implemented in v3.8.0)
         // Sheet 1 uses the previous Live adjust Z (@EEPROM_BABYSTEP_Z)
         int last_babystep = eeprom_read_word((uint16_t *)EEPROM_BABYSTEP_Z);
         eeprom_update_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->s[0].z_offset)), last_babystep);
     }
-
+    
     // initialize the sheet names in eeprom
     for (uint_least8_t i = 0; i < (sizeof(Sheets::s)/sizeof(Sheets::s[0])); i++) {
         SheetName sheetName;
@@ -49,7 +49,7 @@ void eeprom_init()
     // initialize custom mendel name in eeprom
     if (eeprom_read_byte((uint8_t*)EEPROM_CUSTOM_MENDEL_NAME) == EEPROM_EMPTY_VALUE) {
         //SERIAL_ECHOLN("Init Custom Mendel Name");
-        eeprom_update_block_notify(CUSTOM_MENDEL_NAME, (uint8_t*)EEPROM_CUSTOM_MENDEL_NAME, sizeof(CUSTOM_MENDEL_NAME));
+        eeprom_update_block(CUSTOM_MENDEL_NAME, (uint8_t*)EEPROM_CUSTOM_MENDEL_NAME, sizeof(CUSTOM_MENDEL_NAME));
     } //else SERIAL_ECHOLN("Found Custom Mendel Name");
 
 #ifdef PINDA_TEMP_COMP
@@ -66,11 +66,11 @@ void eeprom_init()
 }
 
 void eeprom_adjust_bed_reset() {
-    eeprom_update_byte_notify((uint8_t*)EEPROM_BED_CORRECTION_VALID, 1);
-    eeprom_update_byte_notify((uint8_t*)EEPROM_BED_CORRECTION_LEFT, 0);
-    eeprom_update_byte_notify((uint8_t*)EEPROM_BED_CORRECTION_RIGHT, 0);
-    eeprom_update_byte_notify((uint8_t*)EEPROM_BED_CORRECTION_FRONT, 0);
-    eeprom_update_byte_notify((uint8_t*)EEPROM_BED_CORRECTION_REAR, 0);
+    eeprom_update_byte((uint8_t*)EEPROM_BED_CORRECTION_VALID, 1);
+    eeprom_update_byte((uint8_t*)EEPROM_BED_CORRECTION_LEFT, 0);
+    eeprom_update_byte((uint8_t*)EEPROM_BED_CORRECTION_RIGHT, 0);
+    eeprom_update_byte((uint8_t*)EEPROM_BED_CORRECTION_FRONT, 0);
+    eeprom_update_byte((uint8_t*)EEPROM_BED_CORRECTION_REAR, 0);
 }
 
 //! @brief Get default sheet name for index
@@ -137,175 +137,12 @@ int8_t eeprom_next_initialized_sheet(int8_t sheet)
     return -1;
 }
 
-#ifdef DEBUG_EEPROM_CHANGES
-static void eeprom_byte_notify(uint8_t *dst, uint8_t previous_value, uint8_t value, bool write) {
-    printf_P(PSTR("EEPROMChng b %s %u %d -> %d\n"), write ? "write":"", dst , previous_value, value);
-}
-
-static void eeprom_word_notify(uint16_t *dst, uint16_t previous_value, uint16_t value, bool write) {
-    printf_P(PSTR("EEPROMChng w %s %u %u -> %u\n"), write ? "write":"", dst , previous_value, value);
-}
-
-static void eeprom_dword_notify(uint32_t *dst, uint32_t previous_value, uint32_t value, bool write) {
-    printf_P(PSTR("EEPROMChng d %s %u %x -> %x\n"), write ? "write":"", reinterpret_cast<const uint16_t>(dst) , previous_value, value);
-}
-
-static void eeprom_float_notify(float *dst, float previous_value, float value, bool write) {
-    printf_P(PSTR("EEPROMChng f %s %u %f -> %f\n"), write ? "write":"", reinterpret_cast<const uint16_t>(dst) , previous_value, value);
-}
-
-static void eeprom_block_notify(void *dst, const uint8_t *previous_values, const uint8_t *values, size_t size, bool write) {
-    for(size_t i = 0; i < size; ++i){
-        if (previous_values[i] != values[i] || write) {
-            printf_P(PSTR("EEPROMChng bl %s %u %x -> %x\n"), write ? "write":"", reinterpret_cast<const uint16_t>(dst) + i, previous_values[i], values[i]);
-        }
-    }
-}
-#endif //DEBUG_EEPROM_CHANGES
-
-#ifndef DEBUG_EEPROM_CHANGES
-void eeprom_write_byte_notify(uint8_t *dst, uint8_t value){
-#else
-void eeprom_write_byte_notify(uint8_t *dst, uint8_t value, bool active){
-    if (active) {
-        uint8_t previous_value = eeprom_read_byte(dst);
-        eeprom_byte_notify(dst, previous_value, value, true);
-    }
-#endif //DEBUG_EEPROM_CHANGES
-    eeprom_write_byte(dst, value);
-}
-
-#ifndef DEBUG_EEPROM_CHANGES
-void eeprom_update_byte_notify(uint8_t *dst, uint8_t value){
-#else
-void eeprom_update_byte_notify(uint8_t *dst, uint8_t value, bool active){
-
-    if (active) {
-        uint8_t previous_value = eeprom_read_byte(dst);
-        if (previous_value != value) {
-            eeprom_byte_notify(dst, previous_value, value, false);
-        }
-    }
-#endif //DEBUG_EEPROM_CHANGES
-    eeprom_update_byte(dst, value);
-}
-
-#ifndef DEBUG_EEPROM_CHANGES
-void eeprom_write_word_notify(uint16_t *dst, uint16_t value){
-#else
-void eeprom_write_word_notify(uint16_t *dst, uint16_t value, bool active){
-    if (active) {
-        uint16_t previous_value = eeprom_read_word(dst);
-        eeprom_word_notify(dst, previous_value, value, true);
-    }
-#endif //DEBUG_EEPROM_CHANGES
-    eeprom_write_word(dst, value);
-}
-
-#ifndef DEBUG_EEPROM_CHANGES
-void eeprom_update_word_notify(uint16_t *dst, uint16_t value){
-#else
-void eeprom_update_word_notify(uint16_t *dst, uint16_t value, bool active){
-    if (active) {
-        uint16_t previous_value = eeprom_read_word(dst);
-        if (previous_value != value) {
-            eeprom_word_notify(dst, previous_value, value, false);
-        }
-    }
-#endif //DEBUG_EEPROM_CHANGES
-    eeprom_update_word(dst, value);
-}
-
-#ifndef DEBUG_EEPROM_CHANGES
-void eeprom_write_dword_notify(uint32_t *dst, uint32_t value){
-#else
-void eeprom_write_dword_notify(uint32_t *dst, uint32_t value, bool active){
-    if (active) {
-        uint32_t previous_value = eeprom_read_dword(dst);
-        eeprom_dword_notify(dst, previous_value, value, true);
-    }
-#endif //DEBUG_EEPROM_CHANGES
-    eeprom_write_dword(dst, value);
-}
-
-#ifndef DEBUG_EEPROM_CHANGES
-void eeprom_update_dword_notify(uint32_t *dst, uint32_t value){
-#else
-void eeprom_update_dword_notify(uint32_t *dst, uint32_t value, bool active){
-    if (active) {
-        uint32_t previous_value = eeprom_read_dword(dst);
-        if (previous_value != value) {
-            eeprom_dword_notify(dst, previous_value, value, false);
-        }
-    }
-#endif //DEBUG_EEPROM_CHANGES
-    eeprom_update_dword(dst, value);
-}
-
-#ifndef DEBUG_EEPROM_CHANGES
-void eeprom_write_float_notify(float *dst, float value){
-#else
-void eeprom_write_float_notify(float *dst, float value, bool active){
-    if (active) {
-        float previous_value = eeprom_read_float(dst);
-        eeprom_float_notify(dst, previous_value, value, true);
-    }
-#endif //DEBUG_EEPROM_CHANGES
-    eeprom_write_float(dst, value);
-}
-
-#ifndef DEBUG_EEPROM_CHANGES
-void eeprom_update_float_notify(float *dst, float value){
-#else
-void eeprom_update_float_notify(float *dst, float value, bool active){
-    if (active) {
-        float previous_value = eeprom_read_float(dst);
-        if (previous_value != value) {
-            eeprom_float_notify(dst, previous_value, value, false);
-        }
-    }
-#endif //DEBUG_EEPROM_CHANGES
-    eeprom_update_float(dst, value);
-}
-
-#ifndef DEBUG_EEPROM_CHANGES
-void eeprom_write_block_notify(const void *__src, void *__dst, size_t __n){
-    eeprom_write_block(__src, __dst, __n);
-#else
-void eeprom_write_block_notify(const void *__src, void *__dst, size_t __n, bool active){
-    if (active) {
-        uint8_t previous_values[__n];
-        uint8_t new_values[__n];
-        eeprom_read_block(previous_values, __dst, __n);
-        eeprom_write_block(__src, __dst, __n);
-        eeprom_read_block(new_values, __dst, __n);
-        eeprom_block_notify(__dst, previous_values, new_values, __n, true);
-    }
-#endif //DEBUG_EEPROM_CHANGES
-}
-
-#ifndef DEBUG_EEPROM_CHANGES
-void eeprom_update_block_notify(const void *__src, void *__dst, size_t __n){
-    eeprom_update_block(__src, __dst, __n);
-#else
-void eeprom_update_block_notify(const void *__src, void *__dst, size_t __n, bool active){
-    if (active) {
-        uint8_t previous_values[__n];
-        uint8_t new_values[__n];
-        eeprom_read_block(previous_values, __dst, __n);
-        eeprom_update_block(__src, __dst, __n);
-        eeprom_read_block(new_values, __dst, __n);
-        eeprom_block_notify(__dst, previous_values, new_values, __n, false);
-    }
-#endif //DEBUG_EEPROM_CHANGES
-}
-
 void eeprom_switch_to_next_sheet()
 {
     int8_t sheet = eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet));
 
     sheet = eeprom_next_initialized_sheet(sheet);
-    if (sheet >= 0) eeprom_update_byte_notify(&(EEPROM_Sheets_base->active_sheet), sheet);
+    if (sheet >= 0) eeprom_update_byte(&(EEPROM_Sheets_base->active_sheet), sheet);
 }
 
 bool __attribute__((noinline)) eeprom_is_sheet_initialized(uint8_t sheet_num) {
@@ -326,44 +163,44 @@ void eeprom_update_block_P(const void *__src, void *__dst, size_t __n) {
     const uint8_t *src = (const uint8_t*)__src;
     uint8_t *dst = (uint8_t*)__dst;
     while (__n--) {
-        eeprom_update_byte_notify(dst++, pgm_read_byte(src++));
+        eeprom_update_byte(dst++, pgm_read_byte(src++));
     }
 }
 
 void eeprom_toggle(uint8_t *__p) {
-    eeprom_write_byte_notify(__p, !eeprom_read_byte(__p));
+    eeprom_write_byte(__p, !eeprom_read_byte(__p));
 }
 
 void __attribute__((noinline)) eeprom_increment_byte(uint8_t *__p) {
-    eeprom_write_byte_notify(__p, eeprom_read_byte(__p) + 1);
+    eeprom_write_byte(__p, eeprom_read_byte(__p) + 1);
 }
 
 void __attribute__((noinline)) eeprom_increment_word(uint16_t *__p) {
-    eeprom_write_word_notify(__p, eeprom_read_word(__p) + 1);
+    eeprom_write_word(__p, eeprom_read_word(__p) + 1);
 }
 
 void __attribute__((noinline)) eeprom_increment_dword(uint32_t *__p) {
-    eeprom_write_dword_notify(__p, eeprom_read_dword(__p) + 1);
+    eeprom_write_dword(__p, eeprom_read_dword(__p) + 1);
 }
 
 
 void __attribute__((noinline)) eeprom_add_byte(uint8_t *__p, uint8_t add) {
-    eeprom_write_byte_notify(__p, eeprom_read_byte(__p) + add);
+    eeprom_write_byte(__p, eeprom_read_byte(__p) + add);
 }
 
 void __attribute__((noinline)) eeprom_add_word(uint16_t *__p, uint16_t add) {
-    eeprom_write_word_notify(__p, eeprom_read_word(__p) + add);
+    eeprom_write_word(__p, eeprom_read_word(__p) + add);
 }
 
 void __attribute__((noinline)) eeprom_add_dword(uint32_t *__p, uint32_t add) {
-    eeprom_write_dword_notify(__p, eeprom_read_dword(__p) + add);
+    eeprom_write_dword(__p, eeprom_read_dword(__p) + add);
 }
 
 
 uint8_t __attribute__((noinline)) eeprom_init_default_byte(uint8_t *__p, uint8_t def) {
     uint8_t val = eeprom_read_byte(__p);
     if (val == EEPROM_EMPTY_VALUE) {
-        eeprom_write_byte_notify(__p, def);
+        eeprom_write_byte(__p, def);
         return def;
     }
     return val;
@@ -372,7 +209,7 @@ uint8_t __attribute__((noinline)) eeprom_init_default_byte(uint8_t *__p, uint8_t
 uint16_t __attribute__((noinline)) eeprom_init_default_word(uint16_t *__p, uint16_t def) {
     uint16_t val = eeprom_read_word(__p);
     if (val == EEPROM_EMPTY_VALUE16) {
-        eeprom_write_word_notify(__p, def);
+        eeprom_write_word(__p, def);
         return def;
     }
     return val;
@@ -381,7 +218,7 @@ uint16_t __attribute__((noinline)) eeprom_init_default_word(uint16_t *__p, uint1
 uint32_t __attribute__((noinline)) eeprom_init_default_dword(uint32_t *__p, uint32_t def) {
     uint32_t val = eeprom_read_dword(__p);
     if (val == EEPROM_EMPTY_VALUE32) {
-        eeprom_write_dword_notify(__p, def);
+        eeprom_write_dword(__p, def);
         return def;
     }
     return val;
@@ -389,12 +226,12 @@ uint32_t __attribute__((noinline)) eeprom_init_default_dword(uint32_t *__p, uint
 
 void __attribute__((noinline)) eeprom_init_default_float(float *__p, float def) {
     if (eeprom_read_dword((uint32_t*)__p) == EEPROM_EMPTY_VALUE32)
-        eeprom_write_float_notify(__p, def);
+        eeprom_write_float(__p, def);
 }
 
 void __attribute__((noinline)) eeprom_init_default_block(void *__p, size_t __n, const void *def) {
     if (!eeprom_is_initialized_block(__p, __n))
-        eeprom_update_block_notify(def, __p, __n);
+        eeprom_update_block(def, __p, __n);
 }
 
 void __attribute__((noinline)) eeprom_init_default_block_P(void *__p, size_t __n, const void *def) {

Firmware/eeprom.h

@@ -12,7 +12,6 @@
 #define EEPROM_H
 
 #include <stdint.h>
-#include <stddef.h>
 #include "Configuration_var.h"
 
 // Custom Mendel Name
@@ -84,7 +83,7 @@ static_assert(sizeof(Sheets) == EEPROM_SHEETS_SIZEOF, "Sizeof(Sheets) is not EEP
 
   To convert hex to dec         https://www.rapidtables.com/convert/number/hex-to-decimal.html
 
-  Version: 3.14.1
+  Version: 1.0.2
 
   ---------------------------------------------------------------------------------
 
@@ -107,8 +106,8 @@ static_assert(sizeof(Sheets) == EEPROM_SHEETS_SIZEOF, "Sizeof(Sheets) is not EEP
 | ^           | ^       | ^                                     | f0h 240      | ^               __P__ | needs Z calibration                               | ^            | ^
 | ^           | ^       | ^                                     | fah 250      | ^                     | needs XYZ calibration                             | ^            | ^
 | ^           | ^       | ^                                     | 00h 0        | ^                     | Unknown (legacy)                                  | ^            | ^
-| 0x0FF5 4085 | uint16  | _EEPROM_FREE_NR12_                    | ???          | ff ffh 65535          | _Free EEPROM space_                               | _free space_ | D3 Ax0ff5 C2
-| 0x0FF1 4081 | uint32  | EEPROM_FILAMENTUSED                   | ???          | 00 00 00 00h 0 __S/P__| Filament used in centimeters                      | ???          | D3 Ax0ff1 C4
+| 0x0FF5 4085 | uint16  | EEPROM_BABYSTEP_Z0                    | ???          | ff ffh 65535          | Babystep for Z ???                                | ???          | D3 Ax0ff5 C2
+| 0x0FF1 4081 | uint32  | EEPROM_FILAMENTUSED                   | ???          | 00 00 00 00h 0 __S/P__| Filament used in meters                           | ???          | D3 Ax0ff1 C4
 | 0x0FED 4077 | uint32  | EEPROM_TOTALTIME                      | ???          | 00 00 00 00h 0 __S/P__| Total print time in minutes                       | ???          | D3 Ax0fed C4
 | 0x0FE5 4069 | float   | EEPROM_BED_CALIBRATION_CENTER         | ???          | ff ff ff ffh          | ???                                               | ???          | D3 Ax0fe5 C8
 | 0x0FDD 4061 | float   | EEPROM_BED_CALIBRATION_VEC_X          | ???          | ff ff ff ffh          | ???                                               | ???          | D3 Ax0fdd C8
@@ -383,41 +382,6 @@ static_assert(sizeof(Sheets) == EEPROM_SHEETS_SIZEOF, "Sizeof(Sheets) is not EEP
 | 0x0C94 3220 | uint8   | EEPROM_KILL_PENDING_FLAG              | 42h, ffh     | ffh                   | Kill pending flag (0x42 magic value)              | kill()       | D3 Ax0c94 C1
 | 0x0C91 3217 | char[3] | EEPROM_FILENAME_EXTENSION             | ???          | ffffffffh             | DOS 8.3 filename extension                        | Power Panic  | D3 Ax0c91 C1
 | 0x0C80 3200 | char[17]| EEPROM_CUSTOM_MENDEL_NAME             | Prusa i3 MK3S| ffffffffffffffffff... | Custom Printer Name                               |              | D3 Ax0c80 C17
-| 0x0C7F 3199 | bool    | EEPROM_UVLO_Z_LIFTED                  | 00h 0        | 00h                   | Power Panic Z axis NOT lifted                     | Power Panic  | D3 Ax0c7f C1
-| ^           | ^       | ^                                     | 01h 1        | 01h                   | Power Panic Z axis lifted                         | ^            | ^
-| 0x0C7d 3197 | uint16  | EEPROM_UVLO_EXTRUDE_MINTEMP           | 0-305        | afh 175               | Power Panic Extrude mintemp                       | Power Panic  | D3 Ax0c7d C2
-| 0x0C6D 3181 | uint32  | EEPROM_UVLO_ACCELL_MM_S2_NORMAL       | ???          | ff ff ff ffh          | Power Panic acceleration mm per s2 normal         | Power Panic  | D3 Ax0c6d C16
-| ^           | ^       | ^                                     | ???          | ^                     | E-axis                                            | ^            | D3 Ax0c79 C4
-| ^           | ^       | ^                                     | ???          | ^                     | Z-axis                                            | ^            | D3 Ax0c75 C4
-| ^           | ^       | ^                                     | ???          | ^                     | Y-axis                                            | ^            | D3 Ax0c71 C4
-| ^           | ^       | ^                                     | ???          | ^                     | X-axis                                            | ^            | D3 Ax0c6d C4
-| 0x0C5D 3165 | uint32  | EEPROM_UVLO_ACCELL_MM_S2_SILENT       | ???          | ff ff ff ffh          | Power Panic acceleration mm per s2 silent         | Power Panic  | D3 Ax0c5d C16
-| ^           | ^       | ^                                     | ???          | ^                     | E-axis                                            | ^            | D3 Ax0c69 C4
-| ^           | ^       | ^                                     | ???          | ^                     | Z-axis                                            | ^            | D3 Ax0c65 C4
-| ^           | ^       | ^                                     | ???          | ^                     | Y-axis                                            | ^            | D3 Ax0c61 C4
-| ^           | ^       | ^                                     | ???          | ^                     | X-axis                                            | ^            | D3 Ax0c5d C4
-| 0x0C4D 3149 | float   | EEPROM_UVLO_MAX_FEEDRATE_NORMAL       | ???          | ff ff ff ffh          | Power Panic max feedrate normal                   | Power Panic  | D3 Ax0c4d C16
-| ^           | ^       | ^                                     | ???          | ^                     | E-axis                                            | ^            | D3 Ax0d59 C4
-| ^           | ^       | ^                                     | ???          | ^                     | Z-axis                                            | ^            | D3 Ax0d55 C4
-| ^           | ^       | ^                                     | ???          | ^                     | Y-axis                                            | ^            | D3 Ax0d51 C4
-| ^           | ^       | ^                                     | ???          | ^                     | X-axis                                            | ^            | D3 Ax0c4d C4
-| 0x0C3D 3133 | float   | EEPROM_UVLO_MAX_FEEDRATE_SILENT       | ???          | ff ff ff ffh          | Power Panic max feedrate silent                   | Power Panic  | D3 Ax0c3d C16
-| ^           | ^       | ^                                     | ???          | ^                     | E-axis                                            | ^            | D3 Ax0d49 C4
-| ^           | ^       | ^                                     | ???          | ^                     | Z-axis                                            | ^            | D3 Ax0d45 C4
-| ^           | ^       | ^                                     | ???          | ^                     | Y-axis                                            | ^            | D3 Ax0d41 C4
-| ^           | ^       | ^                                     | ???          | ^                     | X-axis                                            | ^            | D3 Ax0c3d C4
-| 0x0C39 3129 | float   | EEPROM_UVLO_MIN_FEEDRATE              | ???          | ff ff ff ffh          | Power Panic min feedrate                          | Power Panic  | D3 Ax0c39 C4
-| 0x0C35 3125 | float   | EEPROM_UVLO_MIN_TRAVEL_FEEDRATE       | ???          | ff ff ff ffh          | Power Panic min travel feedrate                   | Power Panic  | D3 Ax0c35 C4
-| 0x0C31 3121 | uint32  | EEPROM_UVLO_MIN_SEGMENT_TIME_US       | ???          | ff ff ff ffh          | Power Panic min segment time us                   | Power Panic  | D3 Ax0c31 C4
-| 0x0C21 3105 | float   | EEPROM_UVLO_MAX_JERK                  | ???          | ff ff ff ffh          | Power Panic max jerk                              | Power Panic  | D3 Ax0c21 C16
-| ^           | ^       | ^                                     | ???          | ^                     | E-axis                                            | ^            | D3 Ax0d2d C4
-| ^           | ^       | ^                                     | ???          | ^                     | Z-axis                                            | ^            | D3 Ax0d29 C4
-| ^           | ^       | ^                                     | ???          | ^                     | Y-axis                                            | ^            | D3 Ax0d25 C4
-| ^           | ^       | ^                                     | ???          | ^                     | X-axis                                            | ^            | D3 Ax0c21 C4
-| 0x0C11 3089 | uint8   | EEPROM_CHECK_FILAMENT                 | 01h 1        | ffh 255               | Check mode for filament is: __warn__              | LCD menu     | D3 Ax0c11 C1
-| ^           | ^       | ^                                     | 02h 2        | ^                     | Check mode for filament is: __strict__            | ^            | ^
-| ^           | ^       | ^                                     | 00h 0        | ^                     | Check mode for filament is: __none__              | ^            | ^
-
 
 |Address begin|Bit/Type | Name                                  | Valid values | Default/FactoryReset  | Description                                       |Gcode/Function| Debug code
 | :--:        | :--:    | :--:                                  | :--:         | :--:                  | :--:                                              | :--:         | :--:
@@ -441,7 +405,7 @@ static_assert(sizeof(Sheets) == EEPROM_SHEETS_SIZEOF, "Sizeof(Sheets) is not EEP
 #define _EEPROM_FREE_NR11_ 4090 // uint16_t
 #define EEPROM_BABYSTEP_Z 4088 //legacy, multiple values stored now in EEPROM_Sheets_base
 #define EEPROM_CALIBRATION_STATUS_V1 4087 // legacy, used up to v3.11
-#define _EEPROM_FREE_NR12_ (EEPROM_CALIBRATION_STATUS_V1 - 2) // uint16_t
+#define EEPROM_BABYSTEP_Z0 4085
 #define EEPROM_FILAMENTUSED 4081
 // uint32_t
 #define EEPROM_TOTALTIME 4077
@@ -657,19 +621,9 @@ static Sheets * const EEPROM_Sheets_base = (Sheets*)(EEPROM_SHEETS_BASE);
 #define EEPROM_KILL_PENDING_FLAG (EEPROM_KILL_MESSAGE-1) //uint8
 #define EEPROM_FILENAME_EXTENSION (EEPROM_KILL_PENDING_FLAG - 3) // 3 x char
 #define EEPROM_CUSTOM_MENDEL_NAME (EEPROM_FILENAME_EXTENSION-17) //char[17]
-#define EEPROM_UVLO_Z_LIFTED (EEPROM_CUSTOM_MENDEL_NAME-1) //bool
-#define EEPROM_UVLO_EXTRUDE_MINTEMP (EEPROM_UVLO_Z_LIFTED-2) //uint16_t
-#define EEPROM_UVLO_ACCELL_MM_S2_NORMAL (EEPROM_UVLO_EXTRUDE_MINTEMP-4*4) // 4 x float
-#define EEPROM_UVLO_ACCELL_MM_S2_SILENT (EEPROM_UVLO_ACCELL_MM_S2_NORMAL-4*4) // 4 x uint32_t
-#define EEPROM_UVLO_MAX_FEEDRATE_NORMAL (EEPROM_UVLO_ACCELL_MM_S2_SILENT-4*4) // 4 x uint32_t
-#define EEPROM_UVLO_MAX_FEEDRATE_SILENT (EEPROM_UVLO_MAX_FEEDRATE_NORMAL-4*4) // 4 x float
-#define EEPROM_UVLO_MIN_FEEDRATE (EEPROM_UVLO_MAX_FEEDRATE_SILENT-4) //float
-#define EEPROM_UVLO_MIN_TRAVEL_FEEDRATE (EEPROM_UVLO_MIN_FEEDRATE-4) //float
-#define EEPROM_UVLO_MIN_SEGMENT_TIME_US (EEPROM_UVLO_MIN_TRAVEL_FEEDRATE-4) //uint32_t
-#define EEPROM_UVLO_MAX_JERK (EEPROM_UVLO_MIN_SEGMENT_TIME_US-4*4) // 4 x float
-#define EEPROM_CHECK_FILAMENT (EEPROM_UVLO_MAX_JERK-1) // uint8_t
+
 //This is supposed to point to last item to allow EEPROM overrun check. Please update when adding new items.
-#define EEPROM_LAST_ITEM EEPROM_CHECK_FILAMENT
+#define EEPROM_LAST_ITEM EEPROM_FILENAME_EXTENSION
 // !!!!!
 // !!!!! this is end of EEPROM section ... all updates MUST BE inserted before this mark !!!!!
 // !!!!!
@@ -730,30 +684,6 @@ uint32_t eeprom_init_default_dword(uint32_t *__p, uint32_t def);
 void eeprom_init_default_float(float *__p, float def);
 void eeprom_init_default_block(void *__p, size_t __n, const void *def);
 void eeprom_init_default_block_P(void *__p, size_t __n, const void *def);
-/// Updates eeprom byte and notifies the changed eeprom address (just the address!) onto the serial line
-#ifndef DEBUG_EEPROM_CHANGES
-void eeprom_write_byte_notify(uint8_t *dst, uint8_t value);
-void eeprom_update_byte_notify(uint8_t *dst, uint8_t value);
-void eeprom_write_word_notify(uint16_t *dst, uint16_t value);
-void eeprom_update_word_notify(uint16_t *dst, uint16_t value);
-void eeprom_write_dword_notify(uint32_t *dst, uint32_t value);
-void eeprom_update_dword_notify(uint32_t *dst, uint32_t value);
-void eeprom_write_float_notify(float *dst, float value);
-void eeprom_update_float_notify(float *dst, float value);
-void eeprom_write_block_notify(const void *__src, void *__dst , size_t __size);
-void eeprom_update_block_notify(const void *__src, void *__dst, size_t __size);
-#else
-void eeprom_write_byte_notify(uint8_t *dst, uint8_t value, bool active = true);
-void eeprom_update_byte_notify(uint8_t *dst, uint8_t value, bool active = true);
-void eeprom_write_word_notify(uint16_t *dst, uint16_t value, bool active = true);
-void eeprom_update_word_notify(uint16_t *dst, uint16_t value, bool active = true);
-void eeprom_write_dword_notify(uint32_t *dst, uint32_t value, bool active = true);
-void eeprom_update_dword_notify(uint32_t *dst, uint32_t value, bool active = true);
-void eeprom_write_float_notify(float *dst, float value, bool active = true);
-void eeprom_update_float_notify(float *dst, float value, bool active = true);
-void eeprom_write_block_notify(const void *__src, void *__dst , size_t __size, bool active = true);
-void eeprom_update_block_notify(const void *__src, void *__dst, size_t __size , bool active = true);
-#endif //DEBUG_EEPROM_CHANGES
 #endif
 
 #endif // EEPROM_H

Firmware/fancheck.cpp

@@ -94,7 +94,7 @@ void fanSpeedError(unsigned char _fan) {
 
     if (printJobOngoing()) {
         // A print is ongoing, pause the print normally
-        if(!printingIsPaused()) {
+        if(!print_job_timer.isPaused()) {
             if (usb_timer.running())
                 lcd_pause_usb_print();
             else
@@ -149,7 +149,7 @@ void checkFanSpeed()
         lcd_reset_alert_level(); //for another fan speed error
         lcd_setstatuspgm(MSG_WELCOME); // Reset the status line message to visually show the error is gone
     }
-    if (fans_check_enabled && (fan_check_error != EFCE_REPORTED))
+    if (fans_check_enabled && (fan_check_error == EFCE_OK))
     {
         for (uint8_t fan = 0; fan < 2; fan++)
         {
@@ -194,7 +194,7 @@ ISR(INT7_vect) {
 		if ((millis_nc() - t_fan_rising_edge) >= FAN_PULSE_WIDTH_LIMIT) {//this pulse was from sensor and not from pwm
 			fan_edge_counter[1] += 2; //we are currently counting all edges so lets count two edges for one pulse
 		}
-	}
+	}	
 	EICRB ^= (1 << 6); //change edge
 }
 #endif //(defined(FANCHECK) && defined(TACH_1) && (TACH_1 >-1))
@@ -238,7 +238,7 @@ bool extruder_altfan_detect()
 void altfanOverride_toggle()
 {
     altfanStatus.altfanOverride = !altfanStatus.altfanOverride;
-    eeprom_update_byte_notify((uint8_t *)EEPROM_ALTFAN_OVERRIDE, altfanStatus.altfanOverride);
+    eeprom_update_byte((uint8_t *)EEPROM_ALTFAN_OVERRIDE, altfanStatus.altfanOverride);
 }
 
 bool altfanOverride_get()

Firmware/fastio.h

@@ -62,7 +62,7 @@
 /// Write to a pin wrapper, non critical.
 /// This macro is cheaper than WRITE(IO,v) on ports H,I,J,K,L, as _WRITE_C disables / enables interrupts
 /// and stores the old CPU flags on the stack.
-/// This macro should only be called, where it cannot be interrupted.
+/// This macro should only be called, where it cannot be interrupted. 
 #define WRITE_NC(IO, v)  _WRITE_NC(IO, v)
 
 /// toggle a pin wrapper
@@ -2067,7 +2067,7 @@ pins
 pins
 */
 
-//#define AT90USBxx_TEENSYPP_ASSIGNMENTS // Use Teensy++ 2.0 assignments
+//#define AT90USBxx_TEENSYPP_ASSIGNMENTS // Use Teensy++ 2.0 assignments 
 #ifndef AT90USBxx_TEENSYPP_ASSIGNMENTS // Use traditional Marlin pin assignments
 
 #define DIO0_PIN        PINA0
@@ -2707,8 +2707,8 @@ pins
 
 /*
 
-AT90USB  51 50 49 48 47 46 45 44 10 11 12 13 14 15 16 17 35 36 37 38 39 40 41 42 25 26 27 28 29 30 31 32 33 34 43 09 18 19 01 02 61 60 59 58 57 56 55 54
-Port     A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7 E0 E1 E2 E3 E4 E5 E6 E7 F0 F1 F2 F3 F4 F5 F6 F7
+AT90USB  51 50 49 48 47 46 45 44 10 11 12 13 14 15 16 17 35 36 37 38 39 40 41 42 25 26 27 28 29 30 31 32 33 34 43 09 18 19 01 02 61 60 59 58 57 56 55 54 
+Port     A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7 E0 E1 E2 E3 E4 E5 E6 E7 F0 F1 F2 F3 F4 F5 F6 F7 
 Marlin   00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
 Teensy   28 29 30 31 32 33 34 35 20 21 22 23 24 25 26 27 10 11 12 13 14 15 16 17 00 01 02 03 04 05 06 07 08 09(46*47)36 37 18 19 38 39 40 41 42 43 44 45
          The pins 46 and 47 are not supported by Teensyduino, but are supported below.

Firmware/first_lay_cal.cpp

@@ -37,31 +37,12 @@ static constexpr float spacing(float layer_height, float extrusion_width, float
 static void lay1cal_common_enqueue_loop(const char * const * cmd_sequence, const uint8_t steps) {
     for (uint8_t i = 0; i < steps; ++i)
     {
-        void * const pgm_ptr = pgm_read_ptr(cmd_sequence + i);
-
-        // M702 is currently only used with MMU enabled
-        if (pgm_ptr == MSG_M702 && !MMU2::mmu2.Enabled()) {
-            continue;
-        }
-
-        enquecommand_P(static_cast<char*>(pgm_ptr));
+        enquecommand_P(static_cast<char*>(pgm_read_ptr(cmd_sequence + i)));
     }
 }
 
-static const char extrude_fmt_X[] PROGMEM = "G1X%.4fE%.4f";
-static const char extrude_fmt_Y[] PROGMEM = "G1Y%.4fE%.4f";
-static const char zero_extrusion[] PROGMEM = "G92E0";
-static const char feedrate_F1080[] PROGMEM = "G1F1080";
-#ifndef NEW_FIRST_LAYER_CAL
-static constexpr int8_t invert = 1;
-static constexpr float short_length = 20;
-static constexpr float square_width = short_length;
-#else
-static constexpr int8_t invert = -1;
-static constexpr float short_length = 13.2812; //max_pos[1]/2 / meander * 2
-static constexpr float square_width = short_length*2;
-#endif //NEW_FIRST_LAYER_CAL
-static constexpr float long_length = 150;
+static const char extrude_fmt[] PROGMEM = "G1 X%d Y%d E%-.5f";
+static const char zero_extrusion[] PROGMEM = "G92 E0";
 
 //! @brief Wait for preheat
 void lay1cal_wait_preheat()
@@ -91,8 +72,8 @@ bool lay1cal_load_filament(uint8_t filament)
     if (MMU2::mmu2.Enabled())
     {
         enquecommand_P(MSG_M83);
-        enquecommand_P(PSTR("G1Y-3F1000"));
-        enquecommand_P(PSTR("G1Z0.4"));
+        enquecommand_P(PSTR("G1 Y-3 F1000"));
+        enquecommand_P(PSTR("G1 Z0.4 F1000"));
 
         uint8_t currentTool = MMU2::mmu2.get_current_tool();
         if(currentTool == filament ){
@@ -112,22 +93,25 @@ bool lay1cal_load_filament(uint8_t filament)
 //! @brief Print intro line
 //! @param extraPurgeNeeded false if the first MMU-related "G1 E29" have to be skipped because the nozzle is already full of filament
 //! @param layer_height the height of the calibration layer
-//! @param extrusion_width the width of the extrusion layer
+//! @param extrusion_width the width of the extrusion layer 
 void lay1cal_intro_line(bool extraPurgeNeeded, float layer_height, float extrusion_width)
 {
-    static const char cmd_intro_mmu_3[] PROGMEM = "G1X55E29F1073";
-    static const char cmd_intro_mmu_4[] PROGMEM = "G1X5E29F1800";
-    static const char cmd_intro_mmu_5[] PROGMEM = "G1X55E8F2000";
-    static const char cmd_intro_mmu_6[] PROGMEM = "G1Z0.3F1000";
-    static const char cmd_intro_mmu_8[] PROGMEM = "G1X240E25F2200";
-    static const char cmd_intro_mmu_9[] PROGMEM = "G1Y-2F1000";
-    static const char cmd_intro_mmu_10[] PROGMEM = "G1X202.5E8F1400";
-    static const char cmd_intro_mmu_11[] PROGMEM = "G1Z0.2";
-    static const char * const cmd_intro_mmu[] PROGMEM =
+    static const char cmd_intro_mmu_3[] PROGMEM = "G1 X55 E29 F1073";
+    static const char cmd_intro_mmu_4[] PROGMEM = "G1 X5 E29 F1800";
+    static const char cmd_intro_mmu_5[] PROGMEM = "G1 X55 E8 F2000";
+    static const char cmd_intro_mmu_6[] PROGMEM = "G1 Z0.3 F1000";
+    static const char cmd_intro_mmu_8[] PROGMEM = "G1 X240 E25  F2200";
+    static const char cmd_intro_mmu_9[] PROGMEM = "G1 Y-2 F1000";
+    static const char cmd_intro_mmu_10[] PROGMEM = "G1 X55 E25 F1400";
+    static const char cmd_intro_mmu_11[] PROGMEM = "G1 Z0.2 F1000";
+    static const char cmd_intro_mmu_12[] PROGMEM = "G1 X5 E4 F1000";
+
+    static const char * const intro_mmu_cmd[] PROGMEM =
     {
         // first 2 items are only relevant if filament was not loaded - i.e. extraPurgeNeeded == true
         cmd_intro_mmu_3,
         cmd_intro_mmu_4,
+
         cmd_intro_mmu_5,
         cmd_intro_mmu_6,
         zero_extrusion,
@@ -135,42 +119,42 @@ void lay1cal_intro_line(bool extraPurgeNeeded, float layer_height, float extrusi
         cmd_intro_mmu_9,
         cmd_intro_mmu_10,
         cmd_intro_mmu_11,
+        cmd_intro_mmu_12,
     };
 
     if (MMU2::mmu2.Enabled())
     {
-        for (uint8_t i = (extraPurgeNeeded ? 0 : 2); i < (sizeof(cmd_intro_mmu)/sizeof(cmd_intro_mmu[0])); ++i)
+        for (uint8_t i = (extraPurgeNeeded ? 0 : 2); i < (sizeof(intro_mmu_cmd)/sizeof(intro_mmu_cmd[0])); ++i)
         {
-            enquecommand_P(static_cast<char*>(pgm_read_ptr(&cmd_intro_mmu[i])));
+            enquecommand_P(static_cast<char*>(pgm_read_ptr(&intro_mmu_cmd[i])));
         }
     }
     else
     {
-        enquecommand_P(feedrate_F1080); //fixed velocity for the intro line
-        enquecommandf_P(extrude_fmt_X, 60.f, count_e(layer_height, extrusion_width * 4.f, 60));
-        enquecommandf_P(extrude_fmt_X, 202.5f, count_e(layer_height, extrusion_width * 8.f, 142.5));
+        static const char fmt1[] PROGMEM = "G1 X%d E%-.3f F1000";
+        enquecommandf_P(fmt1, 60, count_e(layer_height, extrusion_width * 4.f, 60));
+        enquecommandf_P(fmt1, 100, count_e(layer_height, extrusion_width * 8.f, 40));
     }
 }
 
 //! @brief Setup for printing meander
 void lay1cal_before_meander()
 {
-#ifndef NEW_FIRST_LAYER_CAL
-    static const char cmd_pre_meander_4[] PROGMEM = "G1E-1.5F2100";
-    static const char cmd_pre_meander_5[] PROGMEM = "G1Z5F7200";
-#endif //NEW_FIRST_LAYER_CAL
-    static const char cmd_pre_meander_6[] PROGMEM = "M204S1000"; //set acceleration
+    static const char cmd_pre_meander_2[] PROGMEM = "G90"; //use absolute coordinates
+    static const char cmd_pre_meander_4[] PROGMEM = "G1 E-1.5 F2100";
+    static const char cmd_pre_meander_5[] PROGMEM = "G1 Z5 F7200";
+    static const char cmd_pre_meander_6[] PROGMEM = "M204 S1000"; //set acceleration
+    static const char cmd_pre_meander_7[] PROGMEM = "G1 F4000";
 
     static const char * const cmd_pre_meander[] PROGMEM =
     {
             zero_extrusion,
-            MSG_G90,
+            cmd_pre_meander_2,
             MSG_M83, // use relative distances for extrusion
-#ifndef NEW_FIRST_LAYER_CAL
             cmd_pre_meander_4,
             cmd_pre_meander_5,
-#endif //NEW_FIRST_LAYER_CAL
             cmd_pre_meander_6,
+            cmd_pre_meander_7,
     };
 
     lay1cal_common_enqueue_loop(cmd_pre_meander, (sizeof(cmd_pre_meander)/sizeof(cmd_pre_meander[0])));
@@ -179,86 +163,88 @@ void lay1cal_before_meander()
 //! @brief Print meander start
 void lay1cal_meander_start(float layer_height, float extrusion_width)
 {
-#ifndef NEW_FIRST_LAYER_CAL
-    enquecommand_P(PSTR("G1X50Y155"));
-#endif //_NEW_FIRST_LAYER_CAL
-    static const char fmt1[] PROGMEM = "G1Z%.2f";
+    enquecommand_P(PSTR("G1 X50 Y155"));
+
+    static const char fmt1[] PROGMEM = "G1 Z%-.3f F7200";
     enquecommandf_P(fmt1, layer_height);
-    enquecommand_P(feedrate_F1080);
-    enquecommand_P(MSG_G91); //enable relative XYZ
-#ifdef NEW_FIRST_LAYER_CAL
-    enquecommandf_P(extrude_fmt_Y, short_length, count_e(layer_height, extrusion_width, short_length));
-    enquecommandf_P(extrude_fmt_X, long_length*invert, count_e(layer_height, extrusion_width, long_length));
-    enquecommandf_P(extrude_fmt_Y, -short_length*invert, count_e(layer_height, extrusion_width, short_length));
-#else
-    enquecommandf_P(extrude_fmt_X, 25.f*invert, count_e(layer_height, extrusion_width * 4.f, 25));
-    enquecommandf_P(extrude_fmt_X, 25.f*invert, count_e(layer_height, extrusion_width * 2.f, 25));
-    enquecommandf_P(extrude_fmt_X, 100.f*invert, count_e(layer_height, extrusion_width, 100));
-    enquecommandf_P(extrude_fmt_Y, -20.f*invert, count_e(layer_height, extrusion_width, 20));
-#endif //_NEW_FIRST_LAYER_CAL
+
+    enquecommand_P(PSTR("G1 F1080"));
+
+    enquecommandf_P(extrude_fmt,  75, 155, count_e(layer_height, extrusion_width * 4.f, 25));
+    enquecommandf_P(extrude_fmt, 100, 155, count_e(layer_height, extrusion_width * 2.f, 25));
+    enquecommandf_P(extrude_fmt, 200, 155, count_e(layer_height, extrusion_width, 100));
+    enquecommandf_P(extrude_fmt, 200, 135, count_e(layer_height, extrusion_width, 20));
 }
 
 //! @brief Print meander
 //! @param cmd_buffer character buffer needed to format gcodes
 void lay1cal_meander(float layer_height, float extrusion_width)
 {
+    const float short_length = 20;
+    float long_length = 150;
     const float long_extrusion = count_e(layer_height, extrusion_width, long_length);
     const float short_extrusion = count_e(layer_height, extrusion_width, short_length);
 
-    for(int8_t i = 0, xdir = -invert; i <= 4; i++, xdir = -xdir)
+    uint8_t y_pos = 135;
+    uint8_t x_pos = 50;
+    for(uint8_t i = 0; i <= 4; ++i)
     {
-        enquecommandf_P(extrude_fmt_X, xdir * long_length, long_extrusion);
-        enquecommandf_P(extrude_fmt_Y, invert * -short_length, short_extrusion);
+        enquecommandf_P(extrude_fmt, x_pos, y_pos, long_extrusion);
+
+        y_pos -= short_length;
+
+        enquecommandf_P(extrude_fmt, x_pos, y_pos, short_extrusion);
+
+        x_pos += long_length;
+
+        long_length = -long_length;
     }
-#ifdef NEW_FIRST_LAYER_CAL
-    constexpr float mid_length = 0.5f * long_length - 0.5f * square_width;
-    const float mid_extrusion = count_e(layer_height, extrusion_width, mid_length);
-    enquecommandf_P(extrude_fmt_X, -mid_length, mid_extrusion); //~Middle of bed X125
-    enquecommandf_P(extrude_fmt_Y, short_length, short_extrusion); //~Middle of bed Y105
-#endif //NEW_FIRST_LAYER_CAL
 
 }
 
 //! @brief Print square
 //!
-//! This function enqueues 4 lines of the square, so it needs to be called multiple times
+//! This function needs to be called 4 times with step of 0,4,8,12
 //!
 //! @param cmd_buffer character buffer needed to format gcodes
-void lay1cal_square(float layer_height, float extrusion_width)
+//! @param i iteration
+void lay1cal_square(uint8_t step, float layer_height, float extrusion_width)
 {
-    const float Y_spacing = spacing(layer_height, extrusion_width);
-    const float long_extrusion = count_e(layer_height, extrusion_width, square_width);
-    const float short_extrusion = count_e(layer_height, extrusion_width, Y_spacing);
+    const float long_length = 20;
+    const float short_length = spacing(layer_height, extrusion_width);
+    const float long_extrusion = count_e(layer_height, extrusion_width, long_length);
+    const float short_extrusion = count_e(layer_height, extrusion_width, short_length);
+    static const char fmt1[] PROGMEM = "G1 X%d Y%-.2f E%-.3f";
 
-    for (uint8_t i = 0; i < 4; i++)
+    for (uint8_t i = step; i < step+4; ++i)
     {
-        enquecommandf_P(extrude_fmt_X, square_width*invert, long_extrusion);
-        enquecommandf_P(extrude_fmt_Y, -Y_spacing*invert, short_extrusion);
-        enquecommandf_P(extrude_fmt_X, -square_width*invert, long_extrusion);
-        enquecommandf_P(extrude_fmt_Y, -Y_spacing*invert, short_extrusion);
+        enquecommandf_P(fmt1, 70, (35 - i*short_length * 2), long_extrusion);
+        enquecommandf_P(fmt1, 70, (35 - (2 * i + 1)*short_length), short_extrusion);
+        enquecommandf_P(fmt1, 50, (35 - (2 * i + 1)*short_length), long_extrusion);
+        enquecommandf_P(fmt1, 50, (35 - (i + 1)*short_length * 2), short_extrusion);
     }
 }
 
-void lay1cal_finish()
+void lay1cal_finish(bool mmu_enabled)
 {
-    static const char cmd_cal_finish_3[] PROGMEM = "G1E-0.075F2100"; // Retract
-    static const char cmd_cal_finish_4[] PROGMEM = "M140S0";         // Turn off bed heater
-    static const char cmd_cal_finish_5[] PROGMEM = "G1Z10F1300";     // Lift Z
-    static const char cmd_cal_finish_6[] PROGMEM = "G1X10Y180F4000"; // Go to parking position
-    static const char cmd_cal_finish_8[] PROGMEM = "M104S0";         // Turn off hotend heater
+    static const char cmd_cal_finish_1[] PROGMEM = "G1 E-0.075 F2100"; //retract
+    static const char cmd_cal_finish_2[] PROGMEM = "M104 S0"; // turn off temperature
+    static const char cmd_cal_finish_3[] PROGMEM = "M140 S0"; // turn off heatbed
+    static const char cmd_cal_finish_4[] PROGMEM = "G1 Z10 F1300"; //lift Z
+    static const char cmd_cal_finish_5[] PROGMEM = "G1 X10 Y180 F4000"; //Go to parking position
 
     static const char * const cmd_cal_finish[] PROGMEM =
     {
-        MSG_G90,          // Set to Absolute Positioning
-        MSG_M107,         // Turn off printer fan
-        cmd_cal_finish_3, // Retract
-        cmd_cal_finish_4, // Turn off bed heater
-        cmd_cal_finish_5, // Lift Z
-        cmd_cal_finish_6, // Go to parking position
-        MSG_M702,         // Unload filament (MMU only)
-        cmd_cal_finish_8, // Turn off hotend heater
-        MSG_M84           // Disable stepper motors
+            MSG_M107, // turn off printer fan
+            cmd_cal_finish_1,
+            cmd_cal_finish_2,
+            cmd_cal_finish_3,
+            cmd_cal_finish_4,
+            cmd_cal_finish_5
     };
 
     lay1cal_common_enqueue_loop(cmd_cal_finish, (sizeof(cmd_cal_finish)/sizeof(cmd_cal_finish[0])));
+
+    if (mmu_enabled) enquecommand_P(MSG_M702); //unload from nozzle
+    enquecommand_P(MSG_M84);// disable motors
 }

Firmware/first_lay_cal.h

@@ -12,7 +12,7 @@ void lay1cal_intro_line(bool skipExtraPurge, float layer_height, float extrusion
 void lay1cal_before_meander();
 void lay1cal_meander_start(float layer_height, float extrusion_width);
 void lay1cal_meander(float layer_height, float extrusion_width);
-void lay1cal_square(float layer_height, float extrusion_width);
-void lay1cal_finish();
+void lay1cal_square(uint8_t step, float layer_height, float extrusion_width);
+void lay1cal_finish(bool mmu_enabled);
 
 #endif /* FIRMWARE_FIRST_LAY_CAL_H_ */

Firmware/heatbed_pwm.cpp

@@ -11,7 +11,7 @@
 // Doing this at higher frequency than the bed "loudspeaker" can handle makes the click barely audible.
 // Technically:
 // timer0 is set to fast PWM mode at 62.5kHz (timer0 is linked to the bed heating pin) (zero prescaler)
-// To keep the bed switching at 30Hz - we don't want the PWM running at 62kHz all the time
+// To keep the bed switching at 30Hz - we don't want the PWM running at 62kHz all the time 
 // since it would burn the heatbed's MOSFET:
 // 16MHz/256 levels of PWM duty gives us 62.5kHz
 // 62.5kHz/256 gives ~244Hz, that is still too fast - 244/8 gives ~30Hz, that's what we need
@@ -19,9 +19,9 @@
 // The finite automaton is running in the ISR(TIMER0_OVF_vect)
 
 // 2019-08-14 update: the original algorithm worked very well, however there were 2 regressions:
-// 1. 62kHz ISR requires considerable amount of processing power,
+// 1. 62kHz ISR requires considerable amount of processing power, 
 //    USB transfer speed dropped by 20%, which was most notable when doing short G-code segments.
-// 2. Some users reported TLed PSU started clicking when running at 120V/60Hz.
+// 2. Some users reported TLed PSU started clicking when running at 120V/60Hz. 
 //    This looks like the original algorithm didn't maintain base PWM 30Hz, but only 15Hz
 // To address both issues, there is an improved approach based on the idea of leveraging
 // different CLK prescalers in some automaton states - i.e. when holding LOW or HIGH on the output pin,
@@ -40,7 +40,7 @@
 // - it can toggle unnoticed, which will result in bed clicking again.
 // That's why there are special transition states ZERO_TO_RISE and ONE_TO_FALL, which enable the
 // counter change its operation atomically and without artefacts on the output pin.
-// The resulting signal on the output pin was checked with an osciloscope.
+// The resulting signal on the output pin was checked with an osciloscope. 
 // If there are any change requirements in the future, the signal must be checked with an osciloscope again,
 // ad-hoc changes may completely screw things up!
 
@@ -57,7 +57,7 @@ enum class States : uint8_t {
 	ZERO_TO_RISE,  ///< metastate allowing the timer change its state atomically without artefacts on the output pin
 	RISE,          ///< 16 fast PWM cycles with increasing duty up to steady ON
 	RISE_TO_ONE,   ///< metastate allowing the timer change its state atomically without artefacts on the output pin
-	ONE,           ///< steady 1 (ON), no change for the whole period
+	ONE,           ///< steady 1 (ON), no change for the whole period 
 	FALL,          ///< 16 fast PWM cycles with decreasing duty down to steady OFF
 	FALL_TO_ZERO   ///< metastate allowing the timer change its state atomically without artefacts on the output pin
 };
@@ -92,7 +92,7 @@ static const uint8_t fastShift = 4;
 /// increment slowCounter by 1
 /// but use less bits of soft PWM - something like soft_pwm_bed >> 2
 /// that may further reduce the CPU cycles required by the bed heating automaton
-/// Due to the nature of bed heating the reduced PID precision may not be a major issue, however doing 8x less ISR(timer0_ovf) may significantly improve the performance
+/// Due to the nature of bed heating the reduced PID precision may not be a major issue, however doing 8x less ISR(timer0_ovf) may significantly improve the performance 
 static const uint8_t slowInc = 1;
 
 ISR(TIMER0_OVF_vect)          // timer compare interrupt service routine
@@ -177,6 +177,6 @@ ISR(TIMER0_OVF_vect)          // timer compare interrupt service routine
 		TCNT0 = 128;
 		OCR0B = 255;
 		TCCR0B = (1 << CS01); // change prescaler to 8, i.e. 7.8kHz
-		break;
+		break;		
     }
 }

Firmware/language.c

@@ -248,7 +248,7 @@ const char* lang_get_name_by_code(uint16_t code)
 #endif // COMMUNITY_LANG_GROUP1_RO
 
 //Use the 3 lines below as a template and replace 'QR' and 'New language'
-//#ifdef COMMUNITY_LANG_GROUP1_QR
+//#ifdef COMMUNITY_LANG_GROUP1_QR 
 //	case LANG_CODE_QR: return _n("New language"); //community contribution
 //#endif // COMMUNITY_LANG_GROUP1_QR
 #endif // COMMUNITY_LANGUAGE_SUPPORT

Firmware/language.h

@@ -13,6 +13,10 @@
 
 #define PROTOCOL_VERSION "1.0"
 
+#ifndef MACHINE_UUID
+   #define MACHINE_UUID "00000000-0000-0000-0000-000000000000"
+#endif
+
 #if (LANG_MODE == 0) //primary language only
 #define PROGMEM_I2 __attribute__((section(".progmem0")))
 #define PROGMEM_I1 __attribute__((section(".progmem1")))
@@ -43,7 +47,7 @@
 /** @brief lang_table_header_t structure - (size= 16byte) */
 typedef struct
 {
-	uint32_t magic;      //+0
+	uint32_t magic;      //+0 
 	uint16_t size;       //+4
 	uint16_t count;      //+6
 	uint16_t checksum;   //+8

Firmware/lcd.cpp

@@ -22,6 +22,8 @@
 	#define LCD_8BIT
 #endif
 
+// #define VT100
+
 // commands
 #define LCD_CLEARDISPLAY 0x01
 #define LCD_RETURNHOME 0x02
@@ -75,6 +77,10 @@ static uint8_t lcd_displaymode = 0;
 uint8_t lcd_currline;
 static uint8_t lcd_ddram_address; // no need for preventing ddram overflow
 
+#ifdef VT100
+uint8_t lcd_escape[8];
+#endif
+
 struct CustomCharacter {
     uint8_t colByte;
     uint8_t rowData[4];
@@ -89,11 +95,30 @@ static const CustomCharacter Font[] PROGMEM = {
 #define CUSTOM_CHARACTERS_CNT (sizeof(Font) / sizeof(Font[0]))
 
 static void lcd_display(void);
+
+#if 0
+static void lcd_no_display(void);
+static void lcd_no_cursor(void);
+static void lcd_cursor(void);
+static void lcd_no_blink(void);
+static void lcd_blink(void);
+static void lcd_scrollDisplayLeft(void);
+static void lcd_scrollDisplayRight(void);
+static void lcd_leftToRight(void);
+static void lcd_rightToLeft(void);
+static void lcd_autoscroll(void);
+static void lcd_no_autoscroll(void);
+#endif
+
 static void lcd_print_custom(uint8_t c);
 static void lcd_invalidate_custom_characters();
 
+#ifdef VT100
+void lcd_escape_write(uint8_t chr);
+#endif
+
 static void lcd_pulseEnable(void)
-{
+{  
 	WRITE(LCD_PINS_ENABLE,HIGH);
 	_delay_us(1);    // enable pulse must be >450ns
 	WRITE(LCD_PINS_ENABLE,LOW);
@@ -111,7 +136,7 @@ static void lcd_writebits(uint8_t value)
 	WRITE(LCD_PINS_D5, value & 0x20);
 	WRITE(LCD_PINS_D6, value & 0x40);
 	WRITE(LCD_PINS_D7, value & 0x80);
-
+	
 	lcd_pulseEnable();
 }
 
@@ -139,9 +164,16 @@ static void lcd_write(uint8_t value)
 	if (value == '\n') {
 		if (lcd_currline > 3) lcd_currline = -1;
 		lcd_set_cursor(0, lcd_currline + 1); // LF
-	} else if ((value >= 0x80) && (value < (0x80 + CUSTOM_CHARACTERS_CNT))) {
+	}
+	else if ((value >= 0x80) && (value < (0x80 + CUSTOM_CHARACTERS_CNT))) {
 		lcd_print_custom(value);
-	} else {
+	}
+	#ifdef VT100
+	else if (lcd_escape[0] || (value == '\e')) {
+		lcd_escape_write(value);
+	}
+	#endif
+	else {
 		lcd_send(value, HIGH);
 		lcd_ddram_address++; // no need for preventing ddram overflow
 	}
@@ -167,7 +199,7 @@ static void lcd_begin(uint8_t clear)
 	// finally, set # lines, font size, etc.0
 	lcd_command(LCD_FUNCTIONSET | lcd_displayfunction);
 	// turn the display on with no cursor or blinking default
-	lcd_displaycontrol = LCD_CURSOROFF | LCD_BLINKOFF;
+	lcd_displaycontrol = LCD_CURSOROFF | LCD_BLINKOFF;  
 	lcd_display();
 	// clear it off
 	if (clear) lcd_clear();
@@ -175,6 +207,10 @@ static void lcd_begin(uint8_t clear)
 	lcd_displaymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT;
 	// set the entry mode
 	lcd_command(LCD_ENTRYMODESET | lcd_displaymode);
+	
+	#ifdef VT100
+	lcd_escape[0] = 0;
+	#endif
 }
 
 static int lcd_putchar(char c, FILE *)
@@ -199,12 +235,12 @@ void lcd_init(void)
 	SET_OUTPUT(LCD_PINS_D5);
 	SET_OUTPUT(LCD_PINS_D6);
 	SET_OUTPUT(LCD_PINS_D7);
-
+	
 #ifdef LCD_8BIT
 	lcd_displayfunction |= LCD_8BITMODE;
 #endif
 	lcd_displayfunction |= LCD_2LINE;
-	_delay_us(50000);
+	_delay_us(50000); 
 	lcd_begin(1); //first time init
 	fdev_setup_stream(lcdout, lcd_putchar, NULL, _FDEV_SETUP_WRITE); //setup lcdout stream
 }
@@ -242,6 +278,83 @@ void lcd_display(void)
     lcd_command(LCD_DISPLAYCONTROL | lcd_displaycontrol);
 }
 
+#if 0
+void lcd_no_display(void)
+{
+	lcd_displaycontrol &= ~LCD_DISPLAYON;
+	lcd_command(LCD_DISPLAYCONTROL | lcd_displaycontrol);
+}
+#endif
+
+#ifdef VT100 //required functions for VT100
+// Turns the underline cursor on/off
+void lcd_no_cursor(void)
+{
+	lcd_displaycontrol &= ~LCD_CURSORON;
+	lcd_command(LCD_DISPLAYCONTROL | lcd_displaycontrol);
+}
+
+void lcd_cursor(void)
+{
+	lcd_displaycontrol |= LCD_CURSORON;
+	lcd_command(LCD_DISPLAYCONTROL | lcd_displaycontrol);
+}
+#endif
+
+#if 0
+// Turn on and off the blinking cursor
+void lcd_no_blink(void)
+{
+	lcd_displaycontrol &= ~LCD_BLINKON;
+	lcd_command(LCD_DISPLAYCONTROL | lcd_displaycontrol);
+}
+
+void lcd_blink(void)
+{
+	lcd_displaycontrol |= LCD_BLINKON;
+	lcd_command(LCD_DISPLAYCONTROL | lcd_displaycontrol);
+}
+
+// These commands scroll the display without changing the RAM
+void lcd_scrollDisplayLeft(void)
+{
+	lcd_command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT);
+}
+
+void lcd_scrollDisplayRight(void)
+{
+	lcd_command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT);
+}
+
+// This is for text that flows Left to Right
+void lcd_leftToRight(void)
+{
+	lcd_displaymode |= LCD_ENTRYLEFT;
+	lcd_command(LCD_ENTRYMODESET | lcd_displaymode);
+}
+
+// This is for text that flows Right to Left
+void lcd_rightToLeft(void)
+{
+	lcd_displaymode &= ~LCD_ENTRYLEFT;
+	lcd_command(LCD_ENTRYMODESET | lcd_displaymode);
+}
+
+// This will 'right justify' text from the cursor
+void lcd_autoscroll(void)
+{
+	lcd_displaymode |= LCD_ENTRYSHIFTINCREMENT;
+	lcd_command(LCD_ENTRYMODESET | lcd_displaymode);
+}
+
+// This will 'left justify' text from the cursor
+void lcd_no_autoscroll(void)
+{
+	lcd_displaymode &= ~LCD_ENTRYSHIFTINCREMENT;
+	lcd_command(LCD_ENTRYMODESET | lcd_displaymode);
+}
+#endif
+
 /// @brief set the current LCD row
 /// @param row LCD row number, ranges from 0 to LCD_HEIGHT - 1
 static void FORCE_INLINE lcd_set_current_row(uint8_t row)
@@ -281,10 +394,10 @@ void lcd_createChar_P(uint8_t location, const CustomCharacter *char_p)
 	// The LCD expects the CGRAM data to be sent as pixel data, row by row. Since there are 8 rows per character, 8 bytes need to be sent.
 	// However, storing the data in the flash as the LCD expects it is wasteful since 3 bits per row are don't care and are not used.
 	// Therefore, flash can be saved if the character data is packed. For the AVR to unpack efficiently and quickly, the following scheme was used:
-	//
+	// 
 	// colbyte data0 data1 data2 data3
 	//    a      b     c     d     e
-	//
+	// 
 	// ** ** ** b7 b6 b5 b4 a0
 	// ** ** ** b3 b2 b1 b0 a1
 	// ** ** ** c7 c6 c5 c4 a2
@@ -293,7 +406,7 @@ void lcd_createChar_P(uint8_t location, const CustomCharacter *char_p)
 	// ** ** ** d3 d2 d1 d0 a5
 	// ** ** ** e7 e6 e5 e4 a6
 	// ** ** ** e3 e2 e1 e0 a7
-	//
+	// 
 	// The bits marked as ** in the unpacked data are don't care and they will contain garbage.
 
 	uint8_t temp;
@@ -301,7 +414,7 @@ void lcd_createChar_P(uint8_t location, const CustomCharacter *char_p)
 	__asm__ __volatile__ (
 		// load colByte
 		"lpm %1, Z+" "\n\t"
-
+		
 		// begin for loop
 		"ldi %0, 8" "\n\t"
 		"mov __zero_reg__, %0" "\n\t"		// use zero_reg as loop counter
@@ -318,7 +431,7 @@ void lcd_createChar_P(uint8_t location, const CustomCharacter *char_p)
 		// end for loop
 		"dec __zero_reg__" "\n\t"
 		"brne forBegin_%=" "\n\t"
-
+		
 		: "=&d" (temp), "=&r" (colByte)
 		: "z" (char_p), "e" (charmap)
 	);
@@ -330,6 +443,144 @@ void lcd_createChar_P(uint8_t location, const CustomCharacter *char_p)
 	lcd_command(LCD_SETDDRAMADDR | lcd_ddram_address); // no need for masking the address
 }
 
+#ifdef VT100
+
+//Supported VT100 escape codes:
+//EraseScreen  "\x1b[2J"
+//CursorHome   "\x1b[%d;%dH"
+//CursorShow   "\x1b[?25h"
+//CursorHide   "\x1b[?25l"
+void lcd_escape_write(uint8_t chr)
+{
+#define escape_cnt (lcd_escape[0])        //escape character counter
+#define is_num_msk (lcd_escape[1])        //numeric character bit mask
+#define chr_is_num (is_num_msk & 0x01) //current character is numeric
+#define e_2_is_num (is_num_msk & 0x04) //escape char 2 is numeric
+#define e_3_is_num (is_num_msk & 0x08) //...
+#define e_4_is_num (is_num_msk & 0x10)
+#define e_5_is_num (is_num_msk & 0x20)
+#define e_6_is_num (is_num_msk & 0x40)
+#define e_7_is_num (is_num_msk & 0x80)
+#define e2_num (lcd_escape[2] - '0')      //number from character 2
+#define e3_num (lcd_escape[3] - '0')      //number from character 3
+#define e23_num (10*e2_num+e3_num)     //number from characters 2 and 3
+#define e4_num (lcd_escape[4] - '0')      //number from character 4
+#define e5_num (lcd_escape[5] - '0')      //number from character 5
+#define e45_num (10*e4_num+e5_num)     //number from characters 4 and 5
+#define e6_num (lcd_escape[6] - '0')      //number from character 6
+#define e56_num (10*e5_num+e6_num)     //number from characters 5 and 6
+	if (escape_cnt > 1) // escape length > 1 = "\x1b["
+	{
+		lcd_escape[escape_cnt] = chr; // store current char
+		if ((chr >= '0') && (chr <= '9')) // char is numeric
+			is_num_msk |= (1 | (1 << escape_cnt)); //set mask
+		else
+			is_num_msk &= ~1; //clear mask
+	}
+	switch (escape_cnt++)
+	{
+	case 0:
+		if (chr == 0x1b) return;  // escape = "\x1b"
+		break;
+	case 1:
+		is_num_msk = 0x00; // reset 'is number' bit mask
+		if (chr == '[') return; // escape = "\x1b["
+		break;
+	case 2:
+		switch (chr)
+		{
+		case '2': return; // escape = "\x1b[2"
+		case '?': return; // escape = "\x1b[?"
+		default:
+			if (chr_is_num) return; // escape = "\x1b[%1d"
+		}
+		break;
+	case 3:
+		switch (lcd_escape[2])
+		{
+		case '?': // escape = "\x1b[?"
+			if (chr == '2') return; // escape = "\x1b[?2"
+			break;
+		case '2':
+			if (chr == 'J') // escape = "\x1b[2J"
+				{ lcd_clear(); break; } // EraseScreen
+		default:
+			if (e_2_is_num && // escape = "\x1b[%1d"
+				((chr == ';') || // escape = "\x1b[%1d;"
+				chr_is_num)) // escape = "\x1b[%2d"
+				return;
+		}
+		break;
+	case 4:
+		switch (lcd_escape[2])
+		{
+		case '?': // "\x1b[?"
+			if ((lcd_escape[3] == '2') && (chr == '5')) return; // escape = "\x1b[?25"
+			break;
+		default:
+			if (e_2_is_num) // escape = "\x1b[%1d"
+			{
+				if ((lcd_escape[3] == ';') && chr_is_num) return; // escape = "\x1b[%1d;%1d"
+				else if (e_3_is_num && (chr == ';')) return; // escape = "\x1b[%2d;"
+			}
+		}
+		break;
+	case 5:
+		switch (lcd_escape[2])
+		{
+		case '?':
+			if ((lcd_escape[3] == '2') && (lcd_escape[4] == '5')) // escape = "\x1b[?25"
+				switch (chr)
+				{
+				case 'h': // escape = "\x1b[?25h"
+  					lcd_cursor(); // CursorShow
+					break;
+				case 'l': // escape = "\x1b[?25l"
+					lcd_no_cursor(); // CursorHide
+					break;
+				}
+			break;
+		default:
+			if (e_2_is_num) // escape = "\x1b[%1d"
+			{
+				if ((lcd_escape[3] == ';') && e_4_is_num) // escape = "\x1b%1d;%1dH"
+				{
+					if (chr == 'H') // escape = "\x1b%1d;%1dH"
+						lcd_set_cursor(e4_num, e2_num); // CursorHome
+					else if (chr_is_num)
+						return; // escape = "\x1b%1d;%2d"
+				}
+				else if (e_3_is_num && (lcd_escape[4] == ';') && chr_is_num)
+					return; // escape = "\x1b%2d;%1d"
+			}
+		}
+		break;
+	case 6:
+		if (e_2_is_num) // escape = "\x1b[%1d"
+		{
+			if ((lcd_escape[3] == ';') && e_4_is_num && e_5_is_num && (chr == 'H')) // escape = "\x1b%1d;%2dH"
+				lcd_set_cursor(e45_num, e2_num); // CursorHome
+			else if (e_3_is_num && (lcd_escape[4] == ';') && e_5_is_num) // escape = "\x1b%2d;%1d"
+			{
+				if (chr == 'H') // escape = "\x1b%2d;%1dH"
+					lcd_set_cursor(e5_num, e23_num); // CursorHome
+				else if (chr_is_num) // "\x1b%2d;%2d"
+					return;
+			}
+		}
+		break;
+	case 7:
+		if (e_2_is_num && e_3_is_num && (lcd_escape[4] == ';')) // "\x1b[%2d;"
+			if (e_5_is_num && e_6_is_num && (chr == 'H')) // "\x1b[%2d;%2dH"
+				lcd_set_cursor(e56_num, e23_num); // CursorHome
+		break;
+	}
+	escape_cnt = 0; // reset escape
+}
+
+#endif //VT100
+
+
 int lcd_putc(char c)
 {
 	return fputc(c, lcdout);
@@ -439,13 +690,13 @@ void lcd_print(unsigned long n, int base)
 
 void lcd_printNumber(unsigned long n, uint8_t base)
 {
-	unsigned char buf[8 * sizeof(long)]; // Assumes 8-bit chars.
+	unsigned char buf[8 * sizeof(long)]; // Assumes 8-bit chars. 
 	uint8_t i = 0;
 	if (n == 0)
 	{
 		lcd_print('0');
 		return;
-	}
+	} 
 	while (n > 0)
 	{
 		buf[i++] = n % base;
@@ -618,7 +869,7 @@ void lcd_buttons_update(void)
 	uint8_t enc_bits = 0;
     if (!READ(BTN_EN1)) enc_bits |= _BV(0);
     if (!READ(BTN_EN2)) enc_bits |= _BV(1);
-
+    
 	if (enc_bits != enc_bits_old)
     {
 		int8_t newDiff = pgm_read_byte(&encrot_table[(enc_bits_old << 2) | enc_bits]);
@@ -705,9 +956,9 @@ void lcd_frame_start() {
 #endif // DEBUG_CUSTOM_CHARACTERS
 			lcd_custom_characters[i] = 0x7F;
 		}
-
+		
 	}
-
+	
 #ifdef DEBUG_CUSTOM_CHARACTERS
 	printf_P(PSTR("frame start:"));
 	for (uint8_t i = 0; i < 8; i++) {

Firmware/lcd.h

@@ -22,6 +22,19 @@ extern void lcd_clear(void);
 
 extern void lcd_home(void);
 
+/*extern void lcd_no_display(void);
+extern void lcd_display(void);
+extern void lcd_no_blink(void);
+extern void lcd_blink(void);
+extern void lcd_no_cursor(void);
+extern void lcd_cursor(void);
+extern void lcd_scrollDisplayLeft(void);
+extern void lcd_scrollDisplayRight(void);
+extern void lcd_leftToRight(void);
+extern void lcd_rightToLeft(void);
+extern void lcd_autoscroll(void);
+extern void lcd_no_autoscroll(void);*/
+
 extern void lcd_set_cursor(uint8_t col, uint8_t row);
 
 /// @brief Change the cursor column position while preserving the current row position
@@ -57,6 +70,19 @@ extern void lcd_print(unsigned int, int = 10);
 extern void lcd_print(long, int = 10);
 extern void lcd_print(unsigned long, int = 10);
 
+//! @brief Clear screen
+#define ESC_2J     "\x1b[2J"
+//! @brief Show cursor
+#define ESC_25h    "\x1b[?25h"
+//! @brief Hide cursor
+#define ESC_25l    "\x1b[?25l"
+//! @brief Set cursor to
+//! @param c column
+//! @param r row
+#define ESC_H(c,r) "\x1b["#r";"#c"H"
+
+
+
 #define LCD_UPDATE_INTERVAL    100
 #define LCD_TIMEOUT_TO_STATUS 30000ul //!< Generic timeout to status screen in ms, when no user action.
 #define LCD_TIMEOUT_TO_STATUS_BABYSTEP_Z 90000ul //!< Specific timeout for lcd_babystep_z screen in ms.
@@ -111,18 +137,18 @@ extern void lcd_buttons_update(void);
 //! When constructed (on stack), original state state of lcd_update_enabled is stored
 //! and LCD updates are disabled.
 //! When destroyed (gone out of scope), original state of LCD update is restored.
-//! Do not call lcd_update_enable() to prevent calling lcd_update() in sensitive code.
-//! in certain scenarios it will cause recursion e.g. in the menus.
+//! It has zero overhead compared to storing bool saved = lcd_update_enabled
+//! and calling lcd_update_enable(false) and lcd_update_enable(saved).
 class LcdUpdateDisabler
 {
 public:
     LcdUpdateDisabler(): m_updateEnabled(lcd_update_enabled)
     {
-        lcd_update_enabled = false;
+        lcd_update_enable(false);
     }
     ~LcdUpdateDisabler()
     {
-        lcd_update_enabled = m_updateEnabled;
+        lcd_update_enable(m_updateEnabled);
     }
 
 private:

Firmware/meatpack.cpp

@@ -326,7 +326,7 @@ void FORCE_INLINE mp_handle_cmd(const MeatPack_Command c) {
         break;
     }
 
-    mp_echo_config_state();
+    mp_echo_config_state();   
 }
 
 //==========================================================================

Firmware/meatpack.h

@@ -22,7 +22,7 @@
 * objects with high curvature, especially at high speeds. There is also the issue of the limited
 * baud rate provided by Prusa's Atmega2560-based boards, over the USB serial connection. So soft-
 * ware like OctoPrint would also suffer this same micro-stuttering and poor print quality issue.
-*
+* 
 */
 #include <stdint.h>
 #include "Configuration.h"

Firmware/menu.cpp

@@ -110,7 +110,7 @@ void menu_back_no_reset(void)
 {
 	if (menu_depth > 0)
 	{
-		menu_depth--;
+		menu_depth--;		
 		menu_goto(menu_stack[menu_depth].menu, menu_stack[menu_depth].position, false);
 	}
 }
@@ -145,7 +145,7 @@ void menu_item_ret(void)
 {
 	lcd_draw_update = 2;
 	menu_item++;
-
+	
 	//prevent the rest of the menu items from rendering or getting clicked
 	menu_row = LCD_HEIGHT; // early exit from the MENU_BEGIN() for loop at the end of the current cycle
 	menu_line = 0; // prevent subsequent menu items from rendering at all in the current MENU_BEGIN() for loop cycle
@@ -433,24 +433,24 @@ static void menu_draw_P(const char chr, const char* str, const int16_t val)
 
 //! @brief Draw up to 10 chars of text and a float number in format from +0.0 to +12345.0. The increased range is necessary
 //! for displaying large values of extruder positions, which caused text overflow in the previous implementation.
-//!
+//! 
 //! @param str string label to print
-//! @param val value to print aligned to the right side of the display
-//!
+//! @param val value to print aligned to the right side of the display  
+//! 
 //! Implementation comments:
 //! The text needs to come with a colon ":", this function does not append it anymore.
 //! That resulted in a much shorter implementation (234628B -> 234476B)
 //! There are similar functions around which may be shortened in a similar way
 void menu_draw_float31(const char* str, float val)
 {
-	lcd_printf_P(menu_fmt_float31, str, val);
+	lcd_printf_P(menu_fmt_float31, str, val);	
 }
 
 //! @brief Draw up to 14 chars of text and a float number in format +1.234
-//!
+//! 
 //! @param str string label to print
-//! @param val value to print aligned to the right side of the display
-//!
+//! @param val value to print aligned to the right side of the display  
+//! 
 //! Implementation comments:
 //! This function uses similar optimization principles as menu_draw_float31
 //! (i.e. str must include a ':' at its end)
@@ -475,8 +475,10 @@ static void _menu_edit_P()
             // disable after first use and/or if the initial value is not minEditValue
             _md->minJumpValue = 0;
         }
+
 		_md->currentValue += lcd_encoder;
 		lcd_encoder = 0; // Consume knob rotation event
+
 		// Constrain the value in case it's outside the allowed limits
 		_md->currentValue = constrain(_md->currentValue, _md->minEditValue, _md->maxEditValue);
 		lcd_set_cursor(0, 1);
@@ -499,7 +501,7 @@ void menu_item_edit_P(const char* str, void* pval, uint8_t pbits, int16_t min_va
 	{
         int16_t cur_val = (pbits == 8 ? *((uint8_t*)pval) : *((int16_t*)pval));
 
-		if (lcd_draw_update)
+		if (lcd_draw_update) 
 		{
 			lcd_set_cursor(0, menu_row);
 			menu_draw_P(menu_selection_mark(), str, cur_val);
@@ -528,7 +530,7 @@ void menu_progressbar_init(uint16_t total, const char* title)
 	lcd_clear();
 	progressbar_block_count = 0;
 	progressbar_total = total;
-
+	
 	lcd_set_cursor(0, 1);
 	lcd_print_pad_P(title, LCD_WIDTH);
 	lcd_set_cursor(0, 2);

Firmware/menu.h

@@ -10,7 +10,7 @@
 //Function pointer to menu functions.
 typedef void (*menu_func_t)(void);
 
-typedef struct
+typedef struct 
 {
     menu_func_t menu;
     int8_t position;

Firmware/mesh_bed_calibration.cpp

@@ -2,7 +2,6 @@
 #include "ConfigurationStore.h"
 #include "util.h"
 #include "language.h"
-#include "lcd.h"
 #include "mesh_bed_calibration.h"
 #include "mesh_bed_leveling.h"
 #include "stepper.h"
@@ -263,26 +262,26 @@ BedSkewOffsetDetectionResultType calculate_machine_skew_and_offset_LS(
                 for (uint8_t i = 0; i < npts; ++i) {
                     // First for the residuum in the x axis:
                     if (r != 1 && c != 1) {
-                        float a =
+                        float a = 
                              (r == 0) ? 1.f :
                             ((r == 2) ? (-s1 * measured_pts[2 * i]) :
                                         (-c2 * measured_pts[2 * i + 1]));
-                        float b =
+                        float b = 
                              (c == 0) ? 1.f :
                             ((c == 2) ? (-s1 * measured_pts[2 * i]) :
                                         (-c2 * measured_pts[2 * i + 1]));
                         float w = point_weight_x(i, measured_pts[2 * i + 1]);
                         acc += a * b * w;
                     }
-                    // Second for the residuum in the y axis.
+                    // Second for the residuum in the y axis. 
                     // The first row of the points have a low weight, because their position may not be known
                     // with a sufficient accuracy.
                     if (r != 0 && c != 0) {
-                        float a =
+                        float a = 
                              (r == 1) ? 1.f :
                             ((r == 2) ? ( c1 * measured_pts[2 * i]) :
                                         (-s2 * measured_pts[2 * i + 1]));
-                        float b =
+                        float b = 
                              (c == 1) ? 1.f :
                             ((c == 2) ? ( c1 * measured_pts[2 * i]) :
                                         (-s2 * measured_pts[2 * i + 1]));
@@ -296,7 +295,7 @@ BedSkewOffsetDetectionResultType calculate_machine_skew_and_offset_LS(
             acc = 0.f;
             for (uint8_t i = 0; i < npts; ++i) {
                 {
-                    float j =
+                    float j = 
                          (r == 0) ? 1.f :
                         ((r == 1) ? 0.f :
                         ((r == 2) ? (-s1 * measured_pts[2 * i]) :
@@ -306,7 +305,7 @@ BedSkewOffsetDetectionResultType calculate_machine_skew_and_offset_LS(
                     acc += j * fx * w;
                 }
                 {
-                    float j =
+                    float j = 
                          (r == 0) ? 0.f :
                         ((r == 1) ? 1.f :
                         ((r == 2) ? ( c1 * measured_pts[2 * i]) :
@@ -374,7 +373,7 @@ BedSkewOffsetDetectionResultType calculate_machine_skew_and_offset_LS(
         angleDiff = fabs(a2 - a1);
         /// XY skew and Y-bed skew
         DBG(_n("Measured skews: %f %f\n"), degrees(a2 - a1), degrees(a2));
-        eeprom_update_float_notify((float *)(EEPROM_XYZ_CAL_SKEW), angleDiff); //storing xyz cal. skew to be able to show in support menu later
+        eeprom_update_float((float *)(EEPROM_XYZ_CAL_SKEW), angleDiff); //storing xyz cal. skew to be able to show in support menu later
         if (angleDiff > bed_skew_angle_mild)
             result = (angleDiff > bed_skew_angle_extreme) ?
                 BED_SKEW_OFFSET_DETECTION_SKEW_EXTREME :
@@ -456,7 +455,7 @@ BedSkewOffsetDetectionResultType calculate_machine_skew_and_offset_LS(
 			if (err > BED_CALIBRATION_POINT_OFFSET_MAX_EUCLIDIAN) {
 				result = BED_SKEW_OFFSET_DETECTION_FITTING_FAILED;
 				#ifdef SUPPORT_VERBOSITY
-				if(verbosity_level >= 20) SERIAL_ECHOPGM(", error > max. error euclidian");
+				if(verbosity_level >= 20) SERIAL_ECHOPGM(", error > max. error euclidian"); 
 				#endif // SUPPORT_VERBOSITY
 			}
         }
@@ -500,6 +499,19 @@ BedSkewOffsetDetectionResultType calculate_machine_skew_and_offset_LS(
 	}
 	#endif // SUPPORT_VERBOSITY
 
+    #if 0
+    if (result == BED_SKEW_OFFSET_DETECTION_PERFECT && fabs(a1) < bed_skew_angle_mild && fabs(a2) < bed_skew_angle_mild) {
+		#ifdef SUPPORT_VERBOSITY
+		if (verbosity_level > 0)
+            SERIAL_ECHOLNPGM("Very little skew detected. Disabling skew correction.");
+		#endif // SUPPORT_VERBOSITY
+        // Just disable the skew correction.
+        vec_x[0] = MACHINE_AXIS_SCALE_X;
+        vec_x[1] = 0.f;
+        vec_y[0] = 0.f;
+        vec_y[1] = MACHINE_AXIS_SCALE_Y;
+    }
+    #else
     if (result == BED_SKEW_OFFSET_DETECTION_PERFECT) {
 		#ifdef SUPPORT_VERBOSITY
 		if (verbosity_level > 0)
@@ -571,6 +583,7 @@ BedSkewOffsetDetectionResultType calculate_machine_skew_and_offset_LS(
 		}
 		#endif // SUPPORT_VERBOSITY
     }
+    #endif
 
     // Invert the transformation matrix made of vec_x, vec_y and cntr.
     {
@@ -656,22 +669,22 @@ BedSkewOffsetDetectionResultType calculate_machine_skew_and_offset_LS(
  */
 void reset_bed_offset_and_skew()
 {
-    eeprom_update_dword_notify((uint32_t*)(EEPROM_BED_CALIBRATION_CENTER+0), 0x0FFFFFFFF);
-    eeprom_update_dword_notify((uint32_t*)(EEPROM_BED_CALIBRATION_CENTER+4), 0x0FFFFFFFF);
-    eeprom_update_dword_notify((uint32_t*)(EEPROM_BED_CALIBRATION_VEC_X +0), 0x0FFFFFFFF);
-    eeprom_update_dword_notify((uint32_t*)(EEPROM_BED_CALIBRATION_VEC_X +4), 0x0FFFFFFFF);
-    eeprom_update_dword_notify((uint32_t*)(EEPROM_BED_CALIBRATION_VEC_Y +0), 0x0FFFFFFFF);
-    eeprom_update_dword_notify((uint32_t*)(EEPROM_BED_CALIBRATION_VEC_Y +4), 0x0FFFFFFFF);
+    eeprom_update_dword((uint32_t*)(EEPROM_BED_CALIBRATION_CENTER+0), 0x0FFFFFFFF);
+    eeprom_update_dword((uint32_t*)(EEPROM_BED_CALIBRATION_CENTER+4), 0x0FFFFFFFF);
+    eeprom_update_dword((uint32_t*)(EEPROM_BED_CALIBRATION_VEC_X +0), 0x0FFFFFFFF);
+    eeprom_update_dword((uint32_t*)(EEPROM_BED_CALIBRATION_VEC_X +4), 0x0FFFFFFFF);
+    eeprom_update_dword((uint32_t*)(EEPROM_BED_CALIBRATION_VEC_Y +0), 0x0FFFFFFFF);
+    eeprom_update_dword((uint32_t*)(EEPROM_BED_CALIBRATION_VEC_Y +4), 0x0FFFFFFFF);
 
     // Reset the 8 16bit offsets.
     for (int8_t i = 0; i < 4; ++ i)
-        eeprom_update_dword_notify((uint32_t*)(EEPROM_BED_CALIBRATION_Z_JITTER+i*4), 0x0FFFFFFFF);
+        eeprom_update_dword((uint32_t*)(EEPROM_BED_CALIBRATION_Z_JITTER+i*4), 0x0FFFFFFFF);
 }
 
 bool is_bed_z_jitter_data_valid()
 // offsets of the Z heiths of the calibration points from the first point are saved as 16bit signed int, scaled to tenths of microns
 // if at least one 16bit integer has different value then -1 (0x0FFFF), data are considered valid and function returns true, otherwise it returns false
-{
+{	
 	for (int8_t i = 0; i < 8; ++i) {
 		if (eeprom_read_word((uint16_t*)(EEPROM_BED_CALIBRATION_Z_JITTER + i * 2)) != 0x0FFFF)
             return true;
@@ -934,11 +947,11 @@ bool find_bed_induction_sensor_point_z(float minimum_z, uint8_t n_iter, int
 #endif //SUPPORT_VERBOSITY
         )
 {
-	bool high_deviation_occured = false;
+	bool high_deviation_occured = false; 
     bedPWMDisabled = 1;
 #ifdef TMC2130
     bool bHighPowerForced = false;
-	if (tmc2130_mode == TMC2130_MODE_SILENT)
+	if (tmc2130_mode == TMC2130_MODE_SILENT) 
     {
         FORCE_HIGH_POWER_START;
         bHighPowerForced = true;
@@ -972,7 +985,7 @@ bool find_bed_induction_sensor_point_z(float minimum_z, uint8_t n_iter, int
 #endif //TMC2130
     for (uint8_t i = 0; i < n_iter; ++ i)
 	{
-
+		
 		current_position[Z_AXIS] += high_deviation_occured ? 0.5 : 0.2;
 		float z_bckp = current_position[Z_AXIS];
 		go_to_current(homing_feedrate[Z_AXIS]/60);
@@ -984,7 +997,7 @@ bool find_bed_induction_sensor_point_z(float minimum_z, uint8_t n_iter, int
         update_current_position_z();
 		//printf_P(PSTR("Zs: %f, Z: %f, delta Z: %f"), z_bckp, current_position[Z_AXIS], (z_bckp - current_position[Z_AXIS]));
 		if (fabs(current_position[Z_AXIS] - z_bckp) < 0.025) {
-			//printf_P(PSTR("PINDA triggered immediately, move Z higher and repeat measurement\n"));
+			//printf_P(PSTR("PINDA triggered immediately, move Z higher and repeat measurement\n")); 
 			raise_z(0.5);
 			current_position[Z_AXIS] = minimum_z;
             go_to_current(homing_feedrate[Z_AXIS]/(4*60));
@@ -1013,12 +1026,12 @@ bool find_bed_induction_sensor_point_z(float minimum_z, uint8_t n_iter, int
 		//printf_P(PSTR("Z[%d] = %d, dz=%d\n"), i, (int)(current_position[Z_AXIS] * 1000), (int)(dz * 1000));
 		//printf_P(PSTR("Z- measurement deviation from avg value %f um\n"), dz);
 		if (dz > 0.05) { //deviation > 50um
-			if (high_deviation_occured == false) { //first occurence may be caused in some cases by mechanic resonance probably especially if printer is placed on unstable surface
+			if (high_deviation_occured == false) { //first occurence may be caused in some cases by mechanic resonance probably especially if printer is placed on unstable surface 
 				//printf_P(PSTR("high dev. first occurence\n"));
 				delay_keep_alive(500); //damping
 				//start measurement from the begining, but this time with higher movements in Z axis which should help to reduce mechanical resonance
 				high_deviation_occured = true;
-				i = -1;
+				i = -1; 
 				z = 0;
 			}
 			else {
@@ -1186,6 +1199,8 @@ BedSkewOffsetDetectionResultType find_bed_induction_sensor_point_xy(int
 			MYSERIAL.println(current_position[Z_AXIS]);
 		}
 		#endif //SUPPORT_VERBOSITY
+		//lcd_show_fullscreen_message_and_wait_P(PSTR("First hit"));
+		//lcd_update_enable(true);
 
 		float init_x_position = current_position[X_AXIS];
 		float init_y_position = current_position[Y_AXIS];
@@ -1193,7 +1208,7 @@ BedSkewOffsetDetectionResultType find_bed_induction_sensor_point_xy(int
 		// we have to let the planner know where we are right now as it is not where we said to go.
 		update_current_position_xyz();
 		enable_z_endstop(false);
-
+		
 		for (int8_t iter = 0; iter < 2; ++iter) {
 			/*SERIAL_ECHOPGM("iter: ");
 			MYSERIAL.println(iter);
@@ -1212,7 +1227,7 @@ BedSkewOffsetDetectionResultType find_bed_induction_sensor_point_xy(int
 			invert_z_endstop(true);
 			for (int iteration = 0; iteration < 8; iteration++) {
 
-				found = false;
+				found = false;				
 				enable_z_endstop(true);
 				go_xy(init_x_position + 16.0f, current_position[Y_AXIS], feedrate / 5);
 				update_current_position_xyz();
@@ -1238,7 +1253,7 @@ BedSkewOffsetDetectionResultType find_bed_induction_sensor_point_xy(int
 				current_position[X_AXIS] = 0.5f * (a + b);
 				go_xy(current_position[X_AXIS], init_y_position, feedrate / 5);
 				found = true;
-
+				
 				// Search in the Y direction along a cross.
 				found = false;
 				enable_z_endstop(true);
@@ -1314,7 +1329,7 @@ BedSkewOffsetDetectionResultType find_bed_induction_sensor_point_xy(int
 			break;
 		}
 	}
-
+	
 	enable_z_endstop(false);
 	invert_z_endstop(false);
 	return found;
@@ -1802,7 +1817,7 @@ canceled:
 #define IMPROVE_BED_INDUCTION_SENSOR_POINT3_SEARCH_RADIUS (8.f)
 #define IMPROVE_BED_INDUCTION_SENSOR_POINT3_SEARCH_STEP_FINE_Y (0.1f)
 inline bool improve_bed_induction_sensor_point3(int verbosity_level)
-{
+{	
     float center_old_x = current_position[X_AXIS];
     float center_old_y = current_position[Y_AXIS];
     float a, b;
@@ -2177,7 +2192,7 @@ float __attribute__((noinline)) BED_Y(const uint8_t row)
 }
 
 BedSkewOffsetDetectionResultType find_bed_offset_and_skew(int8_t verbosity_level, uint8_t &too_far_mask)
-{
+{	
     // Don't let the manage_inactivity() function remove power from the motors.
     refresh_cmd_timeout();
 
@@ -2188,13 +2203,13 @@ BedSkewOffsetDetectionResultType find_bed_offset_and_skew(int8_t verbosity_level
     float *vec_y = vec_x + 2;
     float *cntr  = vec_y + 2;
     memset(pts, 0, sizeof(float) * 7 * 7);
-	uint8_t iteration = 0;
+	uint8_t iteration = 0; 
 	BedSkewOffsetDetectionResultType result;
 
 //    SERIAL_ECHOLNPGM("find_bed_offset_and_skew verbosity level: ");
 //    SERIAL_ECHO(int(verbosity_level));
 //    SERIAL_ECHOPGM("");
-
+	
 #ifdef NEW_XYZCAL
 	{
 #else //NEW_XYZCAL
@@ -2206,7 +2221,7 @@ BedSkewOffsetDetectionResultType find_bed_offset_and_skew(int8_t verbosity_level
 		#ifdef SUPPORT_VERBOSITY
 		if (verbosity_level >= 20) {
 		SERIAL_ECHOLNPGM("Vectors: ");
-
+		
 			SERIAL_ECHOPGM("vec_x[0]:");
 			MYSERIAL.print(vec_x[0], 5);
 			SERIAL_ECHOLNPGM("");
@@ -2275,7 +2290,7 @@ BedSkewOffsetDetectionResultType find_bed_offset_and_skew(int8_t verbosity_level
 		else {
 			// if first iteration failed, count corrected point coordinates as initial
 			// Use the corrected coordinate, which is a result of find_bed_offset_and_skew().
-
+			
 			current_position[X_AXIS] = vec_x[0] * pgm_read_float(bed_ref_points_4 + k * 2) + vec_y[0] * pgm_read_float(bed_ref_points_4 + k * 2 + 1) + cntr[0];
 			current_position[Y_AXIS] = vec_x[1] * pgm_read_float(bed_ref_points_4 + k * 2) + vec_y[1] * pgm_read_float(bed_ref_points_4 + k * 2 + 1) + cntr[1];
 
@@ -2318,7 +2333,7 @@ BedSkewOffsetDetectionResultType find_bed_offset_and_skew(int8_t verbosity_level
 
 #ifndef NEW_XYZCAL
 #ifndef HEATBED_V2
-
+		
 			if (k == 0 || k == 1) {
 				// Improve the position of the 1st row sensor points by a zig-zag movement.
 				find_bed_induction_sensor_point_z();
@@ -2357,11 +2372,11 @@ BedSkewOffsetDetectionResultType find_bed_offset_and_skew(int8_t verbosity_level
 			pt[0] += (current_position[X_AXIS]/(iteration + 1)); //count average
 			pt[1] = (pt[1] * iteration) / (iteration + 1);
 			pt[1] += (current_position[Y_AXIS] / (iteration + 1));
-
-
+			
+			
 			//pt[0] += current_position[X_AXIS];
 			//if(iteration > 0) pt[0] = pt[0] / 2;
-
+						
 			//pt[1] += current_position[Y_AXIS];
 			//if (iteration > 0) pt[1] = pt[1] / 2;
 
@@ -2395,7 +2410,7 @@ BedSkewOffsetDetectionResultType find_bed_offset_and_skew(int8_t verbosity_level
     }
         DBG(_n("All 4 calibration points found.\n"));
         delay_keep_alive(0); //manage_heater, reset watchdog, manage inactivity
-
+		
 		#ifdef SUPPORT_VERBOSITY
 		if (verbosity_level >= 20) {
 			// Test the positions. Are the positions reproducible? Now the calibration is active in the planner.
@@ -2422,15 +2437,15 @@ BedSkewOffsetDetectionResultType find_bed_offset_and_skew(int8_t verbosity_level
 		}
 		result = calculate_machine_skew_and_offset_LS(pts, 4, bed_ref_points_4, vec_x, vec_y, cntr, verbosity_level);
 		delay_keep_alive(0); //manage_heater, reset watchdog, manage inactivity
-
+		
 		if (result >= 0) {
             DBG(_n("Calibration success.\n"));
 			world2machine_update(vec_x, vec_y, cntr);
 
 			// Fearlessly store the calibration values into the eeprom.
-			eeprom_update_block_notify(&cntr[0], (float*)(EEPROM_BED_CALIBRATION_CENTER), 8);
-			eeprom_update_block_notify(&vec_x[0], (float*)(EEPROM_BED_CALIBRATION_VEC_X), 8);
-			eeprom_update_block_notify(&vec_y[0], (float*)(EEPROM_BED_CALIBRATION_VEC_Y), 8);
+			eeprom_update_block(&cntr[0], (float*)(EEPROM_BED_CALIBRATION_CENTER), 8);
+			eeprom_update_block(&vec_x[0], (float*)(EEPROM_BED_CALIBRATION_VEC_X), 8);
+			eeprom_update_block(&vec_y[0], (float*)(EEPROM_BED_CALIBRATION_VEC_Y), 8);
 
 			#ifdef SUPPORT_VERBOSITY
 			if (verbosity_level >= 10) {
@@ -2485,7 +2500,7 @@ BedSkewOffsetDetectionResultType find_bed_offset_and_skew(int8_t verbosity_level
         }
         iteration++;
 	}
-	return result;
+	return result;    
 }
 
 #ifndef NEW_XYZCAL
@@ -2522,7 +2537,7 @@ BedSkewOffsetDetectionResultType improve_bed_offset_and_skew(int8_t method, int8
     bool endstop_z_enabled = enable_z_endstop(false);
 
 #ifdef MESH_BED_CALIBRATION_SHOW_LCD
-    lcd_display_message_fullscreen_P(_T(MSG_IMPROVE_BED_OFFSET_AND_SKEW_LINE1));
+    lcd_display_message_fullscreen_P(_i("Improving bed calibration point"));////MSG_IMPROVE_BED_OFFSET_AND_SKEW_LINE1 c=20 r=4
 #endif /* MESH_BED_CALIBRATION_SHOW_LCD */
 
     // Collect a matrix of 9x9 points.
@@ -2716,9 +2731,9 @@ BedSkewOffsetDetectionResultType improve_bed_offset_and_skew(int8_t method, int8
     world2machine_update(vec_x, vec_y, cntr);
 
     // Fearlessly store the calibration values into the eeprom.
-    eeprom_update_block_notify(&cntr[0], (float*)(EEPROM_BED_CALIBRATION_CENTER), 8);
-    eeprom_update_block_notify(&vec_x[0], (float*)(EEPROM_BED_CALIBRATION_VEC_X), 8);
-    eeprom_update_block_notify(&vec_y[0], (float*)(EEPROM_BED_CALIBRATION_VEC_Y), 8);
+    eeprom_update_block(&cntr[0], (float*)(EEPROM_BED_CALIBRATION_CENTER), 8);
+    eeprom_update_block(&vec_x[0], (float*)(EEPROM_BED_CALIBRATION_VEC_X), 8);
+    eeprom_update_block(&vec_y[0], (float*)(EEPROM_BED_CALIBRATION_VEC_Y), 8);
 
     // Correct the current_position to match the transformed coordinate system after world2machine_rotation_and_skew and world2machine_shift were set.
 	world2machine_update_current();
@@ -2823,10 +2838,6 @@ void go_home_with_z_lift()
 // Returns false if the reference values are more than 3mm far away.
 bool sample_mesh_and_store_reference()
 {
-    bool result = false;
-#ifdef TMC2130
-    tmc2130_home_enter(Z_AXIS_MASK);
-#endif
     bool endstops_enabled  = enable_endstops(false);
     bool endstop_z_enabled = enable_z_endstop(false);
 
@@ -2842,25 +2853,30 @@ bool sample_mesh_and_store_reference()
     // Sample Z heights for the mesh bed leveling.
     // In addition, store the results into an eeprom, to be used later for verification of the bed leveling process.
     {
-        // Lower Z to the mesh search height with stall detection
-        enable_endstops(true);
+        // The first point defines the reference.
         current_position[Z_AXIS] = MESH_HOME_Z_SEARCH;
         go_to_current(homing_feedrate[Z_AXIS]/60);
-#ifdef TMC2130
-        check_Z_crash();
-#endif
-        enable_endstops(false);
-
-        // Move XY to first point
         current_position[X_AXIS] = BED_X0;
         current_position[Y_AXIS] = BED_Y0;
         world2machine_clamp(current_position[X_AXIS], current_position[Y_AXIS]);
         go_to_current(homing_feedrate[X_AXIS]/60);
         set_destination_to_current();
+        enable_endstops(true);
         homeaxis(Z_AXIS);
+
+#ifdef TMC2130
+		if (!axis_known_position[Z_AXIS] && (!READ(Z_TMC2130_DIAG))) //Z crash
+		{
+			kill(_T(MSG_BED_LEVELING_FAILED_POINT_LOW));
+			return false;
+		}
+#endif //TMC2130
+
+        enable_endstops(false);
 		if (!find_bed_induction_sensor_point_z()) //Z crash or deviation > 50um
 		{
 			kill(_T(MSG_BED_LEVELING_FAILED_POINT_LOW));
+			return false;
 		}
         mbl.set_z(0, 0, current_position[Z_AXIS]);
     }
@@ -2886,9 +2902,10 @@ bool sample_mesh_and_store_reference()
 		if (!find_bed_induction_sensor_point_z()) //Z crash or deviation > 50um
 		{
 			kill(_T(MSG_BED_LEVELING_FAILED_POINT_LOW));
+			return false;
 		}
         // Get cords of measuring point
-
+       
         mbl.set_z(ix, iy, current_position[Z_AXIS]);
     }
     {
@@ -2904,7 +2921,7 @@ bool sample_mesh_and_store_reference()
             // The span of the Z offsets is extreme. Give up.
             // Homing failed on some of the points.
             SERIAL_PROTOCOLLNPGM("Exreme span of the Z values!");
-            goto end;
+            return false;
         }
     }
 
@@ -2919,7 +2936,7 @@ bool sample_mesh_and_store_reference()
                     continue;
                 float dif = mbl.z_values[j][i] - mbl.z_values[0][0];
                 int16_t dif_quantized = int16_t(floor(dif * 100.f + 0.5f));
-                eeprom_update_word_notify((uint16_t*)addr, *reinterpret_cast<uint16_t*>(&dif_quantized));
+                eeprom_update_word((uint16_t*)addr, *reinterpret_cast<uint16_t*>(&dif_quantized));
                 #if 0
                 {
                     uint16_t z_offset_u = eeprom_read_word((uint16_t*)addr);
@@ -2944,14 +2961,9 @@ bool sample_mesh_and_store_reference()
 
     go_home_with_z_lift();
 
-    result = true;
-end:
     enable_endstops(endstops_enabled);
     enable_z_endstop(endstop_z_enabled);
-#ifdef TMC2130
-    tmc2130_home_exit();
-#endif
-    return result;
+    return true;
 }
 
 #ifndef NEW_XYZCAL
@@ -3045,11 +3057,11 @@ void babystep_load()
     if (calibration_status_get(CALIBRATION_STATUS_LIVE_ADJUST))
     {
         check_babystep(); //checking if babystep is in allowed range, otherwise setting babystep to 0
-
+        
         // End of G80: Apply the baby stepping value.
         babystepLoadZ = eeprom_read_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->
                     s[(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)))].z_offset)));
-
+                            
     #if 0
         SERIAL_ECHO("Z baby step: ");
         SERIAL_ECHO(babystepLoadZ);
@@ -3076,7 +3088,7 @@ void babystep_undo()
 
 void babystep_reset()
 {
-	babystepLoadZ = 0;
+	babystepLoadZ = 0;    
 }
 
 void count_xyz_details(float (&distanceMin)[2]) {
@@ -3086,7 +3098,11 @@ void count_xyz_details(float (&distanceMin)[2]) {
 	eeprom_read_block(&cntr[0], (float*)(EEPROM_BED_CALIBRATION_CENTER), 8);
 	eeprom_read_block(&vec_x[0], (float*)(EEPROM_BED_CALIBRATION_VEC_X), 8);
 	eeprom_read_block(&vec_y[0], (float*)(EEPROM_BED_CALIBRATION_VEC_Y), 8);
-
+#if 0
+	a2 = -1 * asin(vec_y[0] / MACHINE_AXIS_SCALE_Y);
+	a1 = asin(vec_x[1] / MACHINE_AXIS_SCALE_X);
+	angleDiff = fabs(a2 - a1);
+#endif
 	for (uint8_t mesh_point = 0; mesh_point < 2; ++mesh_point) {
 		float y = vec_x[1] * pgm_read_float(bed_ref_points_4 + mesh_point * 2) + vec_y[1] * pgm_read_float(bed_ref_points_4 + mesh_point * 2 + 1) + cntr[1];
 		distanceMin[mesh_point] = (y - Y_MIN_POS_CALIBRATION_POINT_OUT_OF_REACH);
@@ -3101,8 +3117,8 @@ void mbl_settings_init() {
 	eeprom_init_default_byte((uint8_t*)EEPROM_MBL_PROBE_NR, 3);
 }
 
-//parameter ix: index of mesh bed leveling point in X-axis (for meas_points == 7 is valid range from 0 to 6; for meas_points == 3 is valid range from 0 to 2 )
-//parameter iy: index of mesh bed leveling point in Y-axis (for meas_points == 7 is valid range from 0 to 6; for meas_points == 3 is valid range from 0 to 2 )
+//parameter ix: index of mesh bed leveling point in X-axis (for meas_points == 7 is valid range from 0 to 6; for meas_points == 3 is valid range from 0 to 2 )  
+//parameter iy: index of mesh bed leveling point in Y-axis (for meas_points == 7 is valid range from 0 to 6; for meas_points == 3 is valid range from 0 to 2 ) 
 //function returns true if point is considered valid (typicaly in safe distance from magnet or another object which inflences PINDA measurements)
 bool mbl_point_measurement_valid(uint8_t ix, uint8_t iy) {
 	    //"human readable" heatbed plan

Firmware/mesh_bed_calibration.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <avr/pgmspace.h>
+#include "Marlin.h"
 
 #define BED_ZERO_REF_X (- 22.f + X_PROBE_OFFSET_FROM_EXTRUDER) // -22 + 23 = 1
 #define BED_ZERO_REF_Y (- 0.6f + Y_PROBE_OFFSET_FROM_EXTRUDER + 4.f) // -0.6 + 5 + 4 = 8.4
@@ -133,7 +133,7 @@ inline bool world2machine_clamp(float &x, float &y)
         tmpx = X_MAX_POS;
         clamped = true;
     }
-
+    
     if (tmpy < Y_MIN_POS) {
         tmpy = Y_MIN_POS;
         clamped = true;
@@ -163,13 +163,13 @@ float BED_Y(const uint8_t row);
  * Negative: failed
  */
 
-enum BedSkewOffsetDetectionResultType : int8_t {
+enum BedSkewOffsetDetectionResultType {
 	// Detection failed, some point was not found.
 	BED_SKEW_OFFSET_DETECTION_POINT_FOUND       =  0, //!< Point found
 	BED_SKEW_OFFSET_DETECTION_POINT_NOT_FOUND   = -1, //!< Point not found.
 	BED_SKEW_OFFSET_DETECTION_FITTING_FAILED    = -2, //!< Fitting failed
 	BED_SKEW_OFFSET_DETECTION_POINT_SCAN_FAILED = -3, //!< Point scan failed, try again
-
+	
 	// Detection finished with success.
 	BED_SKEW_OFFSET_DETECTION_PERFECT 			= 0,  //!< Perfect.
 	BED_SKEW_OFFSET_DETECTION_SKEW_MILD			= 1,  //!< Mildly skewed.
@@ -195,7 +195,7 @@ extern bool is_bed_z_jitter_data_valid();
 // Useful for visualizing the behavior of the bed induction detector.
 extern bool scan_bed_induction_points(int8_t verbosity_level);
 
-// Load Z babystep value from the EEPROM into babystepLoadZ,
+// Load Z babystep value from the EEPROM into babystepLoadZ, 
 // but don't apply it through the planner. This is useful on wake up
 // after power panic, when it is expected, that the baby step has been already applied.
 extern void babystep_load();

Firmware/mesh_bed_leveling.cpp

@@ -14,7 +14,7 @@ void mesh_bed_leveling::reset() {
 float mesh_bed_leveling::get_z(float x, float y) {
     int   i, j;
     float s, t;
-
+    
     i = int(floor((x - (BED_X0 + X_PROBE_OFFSET_FROM_EXTRUDER)) / x_mesh_density));
     if (i < 0) {
         i = 0;
@@ -36,7 +36,7 @@ float mesh_bed_leveling::get_z(float x, float y) {
         }
         t = (y - get_y(j)) / y_mesh_density;
     }
-
+    
     float si = 1.f-s;
     float z0 = si * z_values[j  ][i] + s * z_values[j  ][i+1];
     float z1 = si * z_values[j+1][i] + s * z_values[j+1][i+1];
@@ -60,7 +60,7 @@ void mesh_bed_leveling::upsample_3x3()
                 if (!isnan(z_values[j][i]))
                     continue;
                 float x = get_x(i);
-                z_values[j][i] =
+                z_values[j][i] = 
                     z_values[j][idx0] * (x - x1) * (x - x2) / ((x0 - x1) * (x0 - x2)) +
                     z_values[j][idx1] * (x - x0) * (x - x2) / ((x1 - x0) * (x1 - x2)) +
                     z_values[j][idx2] * (x - x0) * (x - x1) / ((x2 - x0) * (x2 - x1));
@@ -78,7 +78,7 @@ void mesh_bed_leveling::upsample_3x3()
                 if (!isnan(z_values[j][i]))
                     continue;
                 float y = get_y(j);
-                z_values[j][i] =
+                z_values[j][i] = 
                     z_values[idx0][i] * (y - y1) * (y - y2) / ((y0 - y1) * (y0 - y2)) +
                     z_values[idx1][i] * (y - y0) * (y - y2) / ((y1 - y0) * (y1 - y2)) +
                     z_values[idx2][i] * (y - y0) * (y - y1) / ((y2 - y0) * (y2 - y1));

Firmware/mesh_bed_leveling.h

@@ -7,9 +7,9 @@ class mesh_bed_leveling {
 public:
     uint8_t active;
     float z_values[MESH_NUM_Y_POINTS][MESH_NUM_X_POINTS];
-
+    
     mesh_bed_leveling() { reset(); }
-
+    
     void reset();
 
     static float get_x(int i) { return BED_X(i) + X_PROBE_OFFSET_FROM_EXTRUDER; }

Firmware/messages.cpp

@@ -18,8 +18,7 @@ const char MSG_BED_HEATING[] PROGMEM_I1 = ISTR("Bed Heating"); ////MSG_BED_HEATI
 const char MSG_BED_LEVELING_FAILED_POINT_LOW[] PROGMEM_I1 = ISTR("Bed leveling failed. Sensor didn't trigger. Debris on nozzle? Waiting for reset."); ////MSG_BED_LEVELING_FAILED_POINT_LOW c=20 r=6
 const char MSG_BED_SKEW_OFFSET_DETECTION_FITTING_FAILED[] PROGMEM_I1 = ISTR("XYZ calibration failed. Please consult the manual."); ////MSG_BED_SKEW_OFFSET_DETECTION_FITTING_FAILED c=20 r=8
 const char MSG_BELT_STATUS[] PROGMEM_I1 = ISTR("Belt status");////MSG_BELT_STATUS c=18
-const char MSG_EJECT[] PROGMEM_I1 = ISTR("Eject"); ////MSG_EJECT c=9
-const char MSG_CANCEL[] PROGMEM_I1 = ISTR("Cancel");////MSG_CANCEL c=9
+const char MSG_CANCEL[] PROGMEM_I1 = ISTR(">Cancel");////MSG_CANCEL c=10
 const char MSG_CALIBRATE_Z_AUTO[] PROGMEM_I1 = ISTR("Calibrating Z"); ////MSG_CALIBRATE_Z_AUTO c=20 r=2
 const char MSG_CARD_MENU[] PROGMEM_I1 = ISTR("Print from SD"); ////MSG_CARD_MENU c=18
 const char MSG_CHECKING_X[] PROGMEM_I1 = ISTR("Checking X axis"); ////MSG_CHECKING_X c=20
@@ -35,6 +34,7 @@ const char MSG_ERROR[] PROGMEM_I1 = ISTR("ERROR:"); ////MSG_ERROR c=10
 const char MSG_EXTRUDER[] PROGMEM_I1 = ISTR("Extruder"); ////MSG_EXTRUDER c=17
 const char MSG_FANS_CHECK[] PROGMEM_I1 = ISTR("Fans check"); ////MSG_FANS_CHECK c=13
 const char MSG_FIL_RUNOUTS[] PROGMEM_I1 = ISTR("Fil. runouts"); ////MSG_FIL_RUNOUTS c=15
+const char MSG_FILAMENT[] PROGMEM_I1 = ISTR("Filament"); ////MSG_FILAMENT c=17
 const char MSG_FAN_SPEED[] PROGMEM_I1 = ISTR("Fan speed"); ////MSG_FAN_SPEED c=14
 const char MSG_HOTEND_FAN_SPEED[] PROGMEM_I1 = ISTR("Hotend fan:");////MSG_HOTEND_FAN_SPEED c=15
 const char MSG_PRINT_FAN_SPEED[] PROGMEM_I1 = ISTR("Print fan:"); ////MSG_PRINT_FAN_SPEED c=15
@@ -76,7 +76,7 @@ const char MSG_NO[] PROGMEM_I1 = ISTR("No"); ////MSG_NO c=4
 const char MSG_NOZZLE[] PROGMEM_I1 = ISTR("Nozzle"); ////MSG_NOZZLE c=10
 const char MSG_PAPER[] PROGMEM_I1 = ISTR("Place a sheet of paper under the nozzle during the calibration of first 4 points. If the nozzle catches the paper, power off the printer immediately."); ////MSG_PAPER c=20 r=8
 const char MSG_PAUSE_PRINT[] PROGMEM_I1 = ISTR("Pause print");////MSG_PAUSE_PRINT c=18
-const char MSG_PRINT_PAUSED[] PROGMEM_I1 = ISTR("Print paused");////MSG_PRINT_PAUSED c=20
+const char MSG_PRINT_PAUSED[] PROGMEM_I1 = ISTR("Print paused");////MSG_PAUSE_PRINT c=20
 const char MSG_PLACE_STEEL_SHEET[] PROGMEM_I1 = ISTR("Please place steel sheet on heatbed."); ////MSG_PLACE_STEEL_SHEET c=20 r=4
 const char MSG_PLEASE_WAIT[] PROGMEM_I1 = ISTR("Please wait"); ////MSG_PLEASE_WAIT c=20
 const char MSG_POWER_FAILURES[] PROGMEM_I1 = ISTR("Power failures"); ////MSG_POWER_FAILURES c=15
@@ -102,15 +102,8 @@ const char MSG_SELFTEST_MOTOR[] PROGMEM_I1 = ISTR("Motor"); ////MSG_SELFTEST_MOT
 const char MSG_SELFTEST_FILAMENT_SENSOR[] PROGMEM_I1 = ISTR("Filament sensor"); ////MSG_SELFTEST_FILAMENT_SENSOR c=17
 const char MSG_SELFTEST_WIRINGERROR[] PROGMEM_I1 = ISTR("Wiring error"); ////MSG_SELFTEST_WIRINGERROR c=18
 const char MSG_SETTINGS[] PROGMEM_I1 = ISTR("Settings"); ////MSG_SETTINGS c=18
-#ifndef REPLACE_SETREADY
 const char MSG_SET_READY[] PROGMEM_I1 = ISTR("Set Ready"); ////MSG_SET_READY c=18
 const char MSG_SET_NOT_READY[] PROGMEM_I1 = ISTR("Set not Ready"); ////MSG_SET_NOT_READY c=18
-#else
-const char MSG_HOSTPRINT[] PROGMEM_I1 = ISTR("Print from host"); ////MSG_HOSTPRINT c=18
-#endif //REPLACE_SETREADY
-#ifdef HOST_SHUTDOWN
-const char MSG_SHUTDOWN_HOST[] PROGMEM_I1 = ISTR("Shutdown host"); ////MSG_SHUTDOWN_HOST c=18
-#endif //HOST_SHUTOWN
 const char MSG_SELECT_LANGUAGE[] PROGMEM_I1 = ISTR("Select language"); ////MSG_SELECT_LANGUAGE c=18
 const char MSG_SORTING_FILES[] PROGMEM_I1 = ISTR("Sorting files"); ////MSG_SORTING_FILES c=20
 const char MSG_TOTAL[] PROGMEM_I1 = ISTR("Total"); ////MSG_TOTAL c=6
@@ -125,12 +118,11 @@ const char MSG_SILENT[] PROGMEM_I1 = ISTR("Silent"); ////MSG_SILENT c=7
 const char MSG_NORMAL[] PROGMEM_I1 = ISTR("Normal"); ////MSG_NORMAL c=7
 const char MSG_STEALTH[] PROGMEM_I1 = ISTR("Stealth"); ////MSG_STEALTH c=7
 const char MSG_STEEL_SHEET_CHECK[] PROGMEM_I1 = ISTR("Is steel sheet on heatbed?"); ////MSG_STEEL_SHEET_CHECK c=20 r=3
-const char MSG_Z_CALIBRATION_PROMPT[] PROGMEM_I1 = ISTR("Z calibration recommended. Run it now?"); ////MSG_Z_CALIBRATION_PROMPT c=20 r=3
 const char MSG_STOP_PRINT[] PROGMEM_I1 = ISTR("Stop print"); ////MSG_STOP_PRINT c=18
 const char MSG_STOPPED[] PROGMEM_I1 = ISTR("STOPPED."); ////MSG_STOPPED c=20
 const char MSG_PINDA_CALIBRATION[] PROGMEM_I1 = ISTR("PINDA cal."); ////MSG_PINDA_CALIBRATION c=13
 const char MSG_PINDA_CALIBRATION_DONE[] PROGMEM_I1 = ISTR("PINDA calibration is finished and active. It can be disabled in menu Settings->PINDA cal."); ////MSG_PINDA_CALIBRATION_DONE c=20 r=8
-const char MSG_UNLOAD_FILAMENT[] PROGMEM_I1 = ISTR("Unload filament"); ////MSG_UNLOAD_FILAMENT c=18
+const char MSG_UNLOAD_FILAMENT[] PROGMEM_I1 = ISTR("Unload filament"); ////MSG_UNLOAD_FILAMENT c=16
 const char MSG_UNLOADING_FILAMENT[] PROGMEM_I1 = ISTR("Unloading filament"); ////MSG_UNLOADING_FILAMENT c=20
 const char MSG_INFO_SCREEN[] PROGMEM_I1 = ISTR("Info screen"); ////MSG_INFO_SCREEN c=18
 const char MSG_WIZARD_CALIBRATION_FAILED[] PROGMEM_I1 = ISTR("Please check our handbook and fix the problem. Then resume the Wizard by rebooting the printer."); ////MSG_WIZARD_CALIBRATION_FAILED c=20 r=8
@@ -149,15 +141,14 @@ const char MSG_NONE[] PROGMEM_I1 = ISTR("None"); ////MSG_NONE c=8
 const char MSG_WARN[] PROGMEM_I1 = ISTR("Warn"); ////MSG_WARN c=8
 const char MSG_STRICT[] PROGMEM_I1 = ISTR("Strict"); ////MSG_STRICT c=8
 const char MSG_MODEL[] PROGMEM_I1 = ISTR("Model"); ////MSG_MODEL c=8
-const char MSG_GCODE_DIFF_PRINTER_CONTINUE[] PROGMEM_I1 = ISTR("G-code sliced for a different printer type."); ////MSG_GCODE_DIFF_PRINTER_CONTINUE c=20 r=3
-const char MSG_GCODE_DIFF_PRINTER_CANCELLED[] PROGMEM_I1 =ISTR("G-code sliced for a different printer type. Please re-slice the model again."); ////MSG_GCODE_DIFF_PRINTER_CANCELLED c=20 r=8
-const char MSG_GCODE_NEWER_FIRMWARE_CONTINUE[] PROGMEM_I1 = ISTR("G-code sliced for a newer firmware."); ////MSG_GCODE_NEWER_FIRMWARE_CONTINUE c=20 r=3
-const char MSG_GCODE_NEWER_FIRMWARE_CANCELLED[] PROGMEM_I1 = ISTR("G-code sliced for a newer firmware. Please update the firmware."); ////MSG_GCODE_NEWER_FIRMWARE_CANCELLED c=20 r=8
-const char MSG_GCODE_DIFF_CONTINUE[] PROGMEM_I1 = ISTR("G-code sliced for a different level."); ////MSG_GCODE_DIFF_CONTINUE c=20 r=3
-const char MSG_GCODE_DIFF_CANCELLED[] PROGMEM_I1 = ISTR("G-code sliced for a different level. Please re-slice the model again."); ////MSG_GCODE_DIFF_CANCELLED c=20 r=8
-const char MSG_MISSING_FILAMENT[] PROGMEM_I1 = ISTR("There is no filament loaded."); ////MSG_MISSING_FILAMENT c=20 r=3
-const char MSG_NOZZLE_DIFFERS_CONTINUE[] PROGMEM_I1 = ISTR("Nozzle diameter differs from the G-code."); ////MSG_NOZZLE_DIFFERS_CONTINUE c=20 r=3
-const char MSG_NOZZLE_DIFFERS_CANCELLED[] PROGMEM_I1 = ISTR("Nozzle diameter differs from the G-code. Please check the value in settings."); ////MSG_NOZZLE_DIFFERS_CANCELLED c=20 r=8
+const char MSG_GCODE_DIFF_PRINTER_CONTINUE[] PROGMEM_I1 = ISTR("G-code sliced for a different printer type. Continue?"); ////MSG_GCODE_DIFF_PRINTER_CONTINUE c=20 r=3
+const char MSG_GCODE_DIFF_PRINTER_CANCELLED[] PROGMEM_I1 =ISTR("G-code sliced for a different printer type. Please re-slice the model again. Print cancelled."); ////MSG_GCODE_DIFF_PRINTER_CANCELLED c=20 r=8
+const char MSG_GCODE_NEWER_FIRMWARE_CONTINUE[] PROGMEM_I1 = ISTR("G-code sliced for a newer firmware. Continue?"); ////MSG_GCODE_NEWER_FIRMWARE_CONTINUE c=20 r=3
+const char MSG_GCODE_NEWER_FIRMWARE_CANCELLED[] PROGMEM_I1 = ISTR("G-code sliced for a newer firmware. Please update the firmware. Print cancelled."); ////MSG_GCODE_NEWER_FIRMWARE_CANCELLED c=20 r=8
+const char MSG_GCODE_DIFF_CONTINUE[] PROGMEM_I1 = ISTR("G-code sliced for a different level. Continue?"); ////MSG_GCODE_DIFF_CONTINUE c=20 r=3
+const char MSG_GCODE_DIFF_CANCELLED[] PROGMEM_I1 = ISTR("G-code sliced for a different level. Please re-slice the model again. Print cancelled."); ////MSG_GCODE_DIFF_CANCELLED c=20 r=8
+const char MSG_NOZZLE_DIFFERS_CONTINUE[] PROGMEM_I1 = ISTR("Nozzle diameter differs from the G-code. Continue?"); ////MSG_NOZZLE_DIFFERS_CONTINUE c=20 r=3
+const char MSG_NOZZLE_DIFFERS_CANCELLED[] PROGMEM_I1 = ISTR("Nozzle diameter differs from the G-code. Please check the value in settings. Print cancelled."); ////MSG_NOZZLE_DIFFERS_CANCELLED c=20 r=8
 const char MSG_NOZZLE_DIAMETER[] PROGMEM_I1 = ISTR("Nozzle d."); ////MSG_NOZZLE_DIAMETER c=10
 const char MSG_MMU_MODE[] PROGMEM_I1 = ISTR("MMU Mode"); ////MSG_MMU_MODE c=8
 const char MSG_SD_CARD[] PROGMEM_I1 = ISTR("SD card"); ////MSG_SD_CARD c=8
@@ -198,203 +189,34 @@ extern const char MSG_TM_ACK_ERROR[] PROGMEM_I1 = ISTR("Clear TM error");////MSG
 extern const char MSG_LOAD_ALL[] PROGMEM_I1 = ISTR("Load All"); ////MSG_LOAD_ALL c=18
 extern const char MSG_NOZZLE_CNG_MENU [] PROGMEM_I1 = ISTR("Nozzle change");////MSG_NOZZLE_CNG_MENU c=18
 extern const char MSG_NOZZLE_CNG_READ_HELP [] PROGMEM_I1 = ISTR("For a Nozzle change please read\nprusa.io/nozzle-mk3s");////MSG_NOZZLE_CNG_READ_HELP c=20 r=4
-#ifdef QUICK_NOZZLE_CHANGE
-extern const char MSG_NOZZLE_CNG_COOLDOWN [] PROGMEM_I1 = ISTR("Nozzle is hot! Wait for cooldown.");////MSG_NOZZLE_CNG_COOLDOWN c=20 r=3
-extern const char MSG_NOZZLE_CNG_CHANGED [] PROGMEM_I1 = ISTR("Nozzle changed?");////MSG_NOZZLE_CNG_CHANGED_QUICK c=20 r=3
-#else
 extern const char MSG_NOZZLE_CNG_CHANGED [] PROGMEM_I1 = ISTR("Hotend at 280C! Nozzle changed and tightened to specs?");////MSG_NOZZLE_CNG_CHANGED c=20 r=6
-#endif //QUICK_NOZZLE_CHANGE
 extern const char MSG_REPRINT [] PROGMEM_I1 = ISTR("Reprint"); ////MSG_REPRINT c=18
-extern const char MSG_FILE_CNT [] PROGMEM_I1 = ISTR("Some files will not be sorted. Max. No. of files in 1 folder for sorting is 100."); ////MSG_FILE_CNT c=20 r=6
-extern const char MSG_CHANGED_MOTHERBOARD [] PROGMEM_I1 = ISTR("Warning: motherboard type changed."); ////MSG_CHANGED_MOTHERBOARD c=20 r=4
-extern const char MSG_CHANGED_PRINTER [] PROGMEM_I1 = ISTR("Warning: printer type changed."); ////MSG_CHANGED_PRINTER c=20 r=4
-extern const char MSG_CHANGED_BOTH [] PROGMEM_I1 = ISTR("Warning: both printer type and motherboard type changed."); ////MSG_CHANGED_BOTH c=20 r=4
-extern const char MSG_DEFAULT_SETTINGS_LOADED [] PROGMEM_I1 = ISTR("Old settings found. Default PID, Esteps etc. will be set."); ////MSG_DEFAULT_SETTINGS_LOADED c=20 r=6
-extern const char MSG_FORCE_SELFTEST [] PROGMEM_I1 = ISTR("Selftest will be run to calibrate accurate sensorless rehoming."); ////MSG_FORCE_SELFTEST c=20 r=8
-extern const char MSG_MBL_FAILED [] PROGMEM_I1 = ISTR("Mesh bed leveling failed. Print canceled."); ////MSG_MBL_FAILED c=20 r=4
-extern const char MSG_ZLEVELING_ENFORCED [] PROGMEM_I1 = ISTR("Some problem encountered, Z-leveling enforced ..."); ////MSG_ZLEVELING_ENFORCED c=20 r=4
-extern const char MSG_UNLOAD_SUCCESSFUL [] PROGMEM_I1 = ISTR("Was filament unload successful?"); ////MSG_UNLOAD_SUCCESSFUL c=20 r=3
-extern const char MSG_CHECK_IDLER [] PROGMEM_I1 = ISTR("Please open idler and remove filament manually."); ////MSG_CHECK_IDLER c=20 r=4
-extern const char MSG_RUN_XYZ [] PROGMEM_I1 = ISTR("Please run XYZ calibration first."); ////MSG_RUN_XYZ c=20 r=4
-extern const char MSG_TEMP_CAL_WARNING [] PROGMEM_I1 = ISTR("Stable ambient temperature 21-26C is needed a rigid stand is required."); ////MSG_TEMP_CAL_WARNING c=20 r=4
-extern const char MSG_USERWAIT [] PROGMEM_I1 = ISTR("Wait for user..."); ////MSG_USERWAIT c=20
-extern const char MSG_NO_MOVE [] PROGMEM_I1 = ISTR("No move."); ////MSG_NO_MOVE c=20
-extern const char MSG_BED_HEATING_SAFETY_DISABLED [] PROGMEM_I1 = ISTR("Heating disabled by safety timer."); ////MSG_BED_HEATING_SAFETY_DISABLED c=20 r=4
-extern const char MSG_PRESS_TO_PREHEAT [] PROGMEM_I1 = ISTR("Press the knob to preheat nozzle and continue."); ////MSG_PRESS_TO_PREHEAT c=20 r=4
-extern const char MSG_IMPROVE_BED_OFFSET_AND_SKEW_LINE1 [] PROGMEM_I1 = ISTR("Improving bed calibration point"); ////MSG_IMPROVE_BED_OFFSET_AND_SKEW_LINE1 c=20 r=4
-extern const char MSG_MMU_RESTORE_TEMP [] PROGMEM_I1 = ISTR("MMU Retry: Restoring temperature..."); ////MSG_MMU_RESTORE_TEMP c=20 r=4
-extern const char MSG_MMU_SENSITIVITY [] PROGMEM_I1 = ISTR("Sensitivity"); ////MSG_MMU_SENSITIVITY c=18
-extern const char MSG_RECOVERING_PRINT [] PROGMEM_I1 = ISTR("Recovering print"); ////MSG_RECOVERING_PRINT c=20
-extern const char MSG_HOMEYZ_DONE [] PROGMEM_I1 = ISTR("Calibration done"); ////MSG_HOMEYZ_DONE c=20
-extern const char MSG_PINDA_PREHEAT [] PROGMEM_I1 = ISTR("PINDA Heating"); ////MSG_PINDA_PREHEAT c=20
-extern const char MSG_PID_RUNNING [] PROGMEM_I1 = ISTR("PID cal."); ////MSG_PID_RUNNING c=20
-extern const char MSG_PID_FINISHED [] PROGMEM_I1 = ISTR("PID cal. finished"); ////MSG_PID_FINISHED c=20
-extern const char MSG_AMBIENT [] PROGMEM_I1 = ISTR("Ambient"); ////MSG_AMBIENT c=14
-extern const char MSG_DATE [] PROGMEM_I1 = ISTR("Date:"); ////MSG_DATE c=17
-extern const char MSG_MMU_CONNECTED [] PROGMEM_I1 = ISTR("MMU connected"); ////MSG_MMU_CONNECTED c=18
-extern const char MSG_UNKNOWN [] PROGMEM_I1 = ISTR("unknown"); ////MSG_UNKNOWN c=13
-extern const char MSG_PRINTER_IP [] PROGMEM_I1 = ISTR("Printer IP Addr:"); ////MSG_PRINTER_IP c=18
-extern const char MSG_XYZ_DETAILS [] PROGMEM_I1 = ISTR("XYZ cal. details"); ////MSG_XYZ_DETAILS c=18
-extern const char MSG_INFO_EXTRUDER [] PROGMEM_I1 = ISTR("Extruder info"); ////MSG_INFO_EXTRUDER c=18
-extern const char MSG_INFO_SENSORS [] PROGMEM_I1 = ISTR("Sensor info"); ////MSG_INFO_SENSORS c=18
-extern const char MSG_MENU_TEMPERATURES [] PROGMEM_I1 = ISTR("Temperatures"); ////MSG_MENU_TEMPERATURES c=18
-extern const char MSG_MENU_VOLTAGES [] PROGMEM_I1 = ISTR("Voltages"); ////MSG_MENU_VOLTAGES c=18
-extern const char MSG_PRESS_KNOB [] PROGMEM_I1 = ISTR("Press the knob"); ////MSG_PRESS_KNOB c=20
-extern const char MSG_TO_LOAD_FIL [] PROGMEM_I1 = ISTR("to load filament"); ////MSG_TO_LOAD_FIL c=20
-extern const char MSG_TO_UNLOAD_FIL [] PROGMEM_I1 = ISTR("to unload filament"); ////MSG_TO_UNLOAD_FIL c=20
-extern const char MSG_PREHEATING_TO_LOAD [] PROGMEM_I1 = ISTR("Preheating to load"); ////MSG_PREHEATING_TO_LOAD c=20
-extern const char MSG_PREHEATING_TO_UNLOAD [] PROGMEM_I1 = ISTR("Preheating to unload"); ////MSG_PREHEATING_TO_UNLOAD c=20
-extern const char MSG_PREHEATING_TO_EJECT [] PROGMEM_I1 = ISTR("Preheating to eject"); ////MSG_PREHEATING_TO_EJECT c=20
-extern const char MSG_PREHEATING_TO_CUT [] PROGMEM_I1 = ISTR("Preheating to cut"); ////MSG_PREHEATING_TO_CUT c=20
-extern const char MSG_INSERT_FILAMENT [] PROGMEM_I1 = ISTR("Insert filament"); ////MSG_INSERT_FILAMENT c=20
-extern const char MSG_PRESS [] PROGMEM_I1 = ISTR("and press the knob"); ////MSG_PRESS c=20 r=2
-extern const char MSG_CHANGE_SUCCESS [] PROGMEM_I1 = ISTR("Change success!"); ////MSG_CHANGE_SUCCESS c=20
-extern const char MSG_LOADING_COLOR [] PROGMEM_I1 = ISTR("Loading color"); ////MSG_LOADING_COLOR c=20
-extern const char MSG_CORRECTLY [] PROGMEM_I1 = ISTR("Changed correctly"); ////MSG_CORRECTLY c=19
-extern const char MSG_NOT_LOADED [] PROGMEM_I1 = ISTR("Filament not loaded"); ////MSG_NOT_LOADED c=19
-extern const char MSG_NOT_COLOR [] PROGMEM_I1 = ISTR("Color not correct"); ////MSG_NOT_COLOR c=19
-#ifndef REMOVE_AUTOLOAD_FILAMENT_MENU_ENTRY
-extern const char MSG_AUTOLOADING_ENABLED [] PROGMEM_I1 = ISTR("Autoloading filament is active, just press the knob and insert filament..."); ////MSG_AUTOLOADING_ENABLED c=20 r=4
-#endif //REMOVE_AUTOLOAD_FILAMENT_MENU_ENTRY
-extern const char MSG_FILAMENT_USED [] PROGMEM_I1 = ISTR("Filament used"); ////MSG_FILAMENT_USED c=19
-extern const char MSG_PRINT_TIME [] PROGMEM_I1 = ISTR("Print time"); ////MSG_PRINT_TIME c=19
-extern const char MSG_TOTAL_FILAMENT [] PROGMEM_I1 = ISTR("Total filament"); ////MSG_TOTAL_FILAMENT c=19
-extern const char MSG_TOTAL_PRINT_TIME [] PROGMEM_I1 = ISTR("Total print time"); ////MSG_TOTAL_PRINT_TIME c=19
-extern const char MSG_Y_DIST_FROM_MIN [] PROGMEM_I1 = ISTR("Y distance from min"); ////MSG_Y_DIST_FROM_MIN c=20
-extern const char MSG_LEFT [] PROGMEM_I1 = ISTR("Left"); ////MSG_LEFT c=10
-extern const char MSG_RIGHT [] PROGMEM_I1 = ISTR("Right"); ////MSG_RIGHT c=10
-extern const char MSG_MEASURED_SKEW [] PROGMEM_I1 = ISTR("Measured skew"); ////MSG_MEASURED_SKEW c=14
-extern const char MSG_SLIGHT_SKEW [] PROGMEM_I1 = ISTR("Slight skew"); ////MSG_SLIGHT_SKEW c=14
-extern const char MSG_SEVERE_SKEW [] PROGMEM_I1 = ISTR("Severe skew"); ////MSG_SEVERE_SKEW c=14
-extern const char MSG_MEASURED_OFFSET [] PROGMEM_I1 = ISTR("[0;0] point offset"); ////MSG_MEASURED_OFFSET c=20
-extern const char MSG_BABYSTEPPING_Z [] PROGMEM_I1 = ISTR("Adjusting Z"); ////MSG_BABYSTEPPING_Z c=13
-extern const char MSG_BED_CORRECTION_LEFT [] PROGMEM_I1 = ISTR("Left side [\xe4m]"); ////MSG_BED_CORRECTION_LEFT c=14
-extern const char MSG_BED_CORRECTION_RIGHT [] PROGMEM_I1 = ISTR("Right side[\xe4m]"); ////MSG_BED_CORRECTION_RIGHT c=14
-extern const char MSG_BED_CORRECTION_FRONT [] PROGMEM_I1 = ISTR("Front side[\xe4m]"); ////MSG_BED_CORRECTION_FRONT c=14
-extern const char MSG_BED_CORRECTION_REAR [] PROGMEM_I1 = ISTR("Rear side [\xe4m]"); ////MSG_BED_CORRECTION_REAR c=14
-extern const char MSG_SET_TEMPERATURE [] PROGMEM_I1 = ISTR("Set temperature:"); ////MSG_SET_TEMPERATURE c=20
-extern const char MSG_WAITING_TEMP_PINDA [] PROGMEM_I1 = ISTR("Waiting for PINDA probe cooling"); ////MSG_WAITING_TEMP_PINDA c=20 r=3
-extern const char MSG_WAITING_TEMP [] PROGMEM_I1 = ISTR("Waiting for nozzle and bed cooling"); ////MSG_WAITING_TEMP c=20 r=4
-extern const char MSG_MOVE_CARRIAGE_TO_THE_TOP_Z [] PROGMEM_I1 = ISTR("Calibrating Z. Rotate the knob to move the Z carriage up to the end stoppers. Click when done."); ////MSG_MOVE_CARRIAGE_TO_THE_TOP_Z c=20 r=8
-extern const char MSG_MOVE_CARRIAGE_TO_THE_TOP [] PROGMEM_I1 = ISTR("Calibrating XYZ. Rotate the knob to move the Z carriage up to the end stoppers. Click when done."); ////MSG_MOVE_CARRIAGE_TO_THE_TOP c=20 r=8
-extern const char MSG_CONFIRM_CARRIAGE_AT_THE_TOP [] PROGMEM_I1 = ISTR("Are left and right Z-carriages all up?"); ////MSG_CONFIRM_CARRIAGE_AT_THE_TOP c=20 r=3
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_POINT_NOT_FOUND [] PROGMEM_I1 = ISTR("XYZ calibration failed. Bed calibration point was not found."); ////MSG_BED_SKEW_OFFSET_DETECTION_POINT_NOT_FOUND c=20 r=6
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_FAILED_FRONT_BOTH_FAR [] PROGMEM_I1 = ISTR("XYZ calibration failed. Front calibration points not reachable."); ////MSG_BED_SKEW_OFFSET_DETECTION_FAILED_FRONT_BOTH_FAR c=20 r=6
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_FAILED_FRONT_RIGHT_FAR [] PROGMEM_I1 = ISTR("XYZ calibration failed. Right front calibration point not reachable."); ////MSG_BED_SKEW_OFFSET_DETECTION_FAILED_FRONT_RIGHT_FAR c=20 r=6
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_WARNING_FRONT_BOTH_FAR [] PROGMEM_I1 = ISTR("XYZ calibration compromised. Front calibration points not reachable."); ////MSG_BED_SKEW_OFFSET_DETECTION_WARNING_FRONT_BOTH_FAR c=20 r=8
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_WARNING_FRONT_RIGHT_FAR [] PROGMEM_I1 = ISTR("XYZ calibration compromised. Right front calibration point not reachable."); ////MSG_BED_SKEW_OFFSET_DETECTION_WARNING_FRONT_RIGHT_FAR c=20 r=8
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_PERFECT [] PROGMEM_I1 = ISTR("XYZ calibration ok. X/Y axes are perpendicular. Congratulations!"); ////MSG_BED_SKEW_OFFSET_DETECTION_PERFECT c=20 r=8
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_SKEW_MILD [] PROGMEM_I1 = ISTR("XYZ calibration all right. X/Y axes are slightly skewed. Good job!"); ////MSG_BED_SKEW_OFFSET_DETECTION_SKEW_MILD c=20 r=8
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_SKEW_EXTREME [] PROGMEM_I1 = ISTR("XYZ calibration all right. Skew will be corrected automatically."); ////MSG_BED_SKEW_OFFSET_DETECTION_SKEW_EXTREME c=20 r=8
-extern const char MSG_PINDA_CAL_FAILED [] PROGMEM_I1 = ISTR("PINDA calibration failed"); ////MSG_PINDA_CAL_FAILED c=20 r=4
-extern const char MSG_MOVE_X [] PROGMEM_I1 = ISTR("Move X"); ////MSG_MOVE_X c=18
-extern const char MSG_MOVE_Y [] PROGMEM_I1 = ISTR("Move Y"); ////MSG_MOVE_Y c=18
-extern const char MSG_MOVE_Z [] PROGMEM_I1 = ISTR("Move Z"); ////MSG_MOVE_Z c=18
-extern const char MSG_CRASH_DET_ONLY_IN_NORMAL [] PROGMEM_I1 = ISTR("Crash detection can\nbe turned on only in\nNormal mode"); ////MSG_CRASH_DET_ONLY_IN_NORMAL c=20 r=4
-extern const char MSG_CRASH_DET_STEALTH_FORCE_OFF [] PROGMEM_I1 = ISTR("WARNING:\nCrash detection\ndisabled in\nStealth mode"); ////MSG_CRASH_DET_STEALTH_FORCE_OFF c=20 r=4
-extern const char MSG_MODE_CHANGE_IN_PROGRESS [] PROGMEM_I1 = ISTR("Mode change in progress..."); ////MSG_MODE_CHANGE_IN_PROGRESS c=20 r=3
-extern const char MSG_COPY_SEL_LANG [] PROGMEM_I1 = ISTR("Copy selected language?"); ////MSG_COPY_SEL_LANG c=20 r=3
-extern const char MSG_SHEET_OFFSET [] PROGMEM_I1 = ISTR("Sheet %.7s\nZ offset: %+1.3fmm\n%cContinue\n%cReset"); ////MSG_SHEET_OFFSET c=20 r=4
-extern const char MSG_PLEASE_LOAD_PLA [] PROGMEM_I1 = ISTR("Please load filament first."); ////MSG_PLEASE_LOAD_PLA c=20 r=4
-extern const char MSG_WIZARD_RERUN [] PROGMEM_I1 = ISTR("Running Wizard will delete current calibration results and start from the beginning."); ////MSG_WIZARD_RERUN c=20 r=7
-extern const char MSG_MMU_INSERT_FILAMENT_FIRST_TUBE [] PROGMEM_I1 = ISTR("Please insert filament into the first tube of the MMU, then press the knob to load it."); ////MSG_MMU_INSERT_FILAMENT_FIRST_TUBE c=20 r=6
-extern const char MSG_WIZARD_LOAD_FILAMENT [] PROGMEM_I1 = ISTR("Please insert filament into the extruder, then press the knob to load it."); ////MSG_WIZARD_LOAD_FILAMENT c=20 r=6
-extern const char MSG_WIZARD_V2_CAL [] PROGMEM_I1 = ISTR("Now I will calibrate distance between tip of the nozzle and heatbed surface."); ////MSG_WIZARD_V2_CAL c=20 r=8
-extern const char MSG_SELECT_FIL_1ST_LAYERCAL [] PROGMEM_I1 = ISTR("Select a filament for the First Layer Calibration and select it in the on-screen menu."); ////MSG_SELECT_FIL_1ST_LAYERCAL c=20 r=7
-extern const char MSG_SELECT_TEMP_MATCHES_MATERIAL [] PROGMEM_I1 = ISTR("Select temperature which matches your material."); ////MSG_SELECT_TEMP_MATCHES_MATERIAL c=20 r=4
-extern const char MSG_WIZARD_V2_CAL_2 [] PROGMEM_I1 = ISTR("The printer will start printing a zig-zag line. Rotate the knob until you reach the optimal height. Check the pictures in the handbook (Calibration chapter)."); ////MSG_WIZARD_V2_CAL_2 c=20 r=12
-extern const char MSG_WIZARD_SELFTEST [] PROGMEM_I1 = ISTR("First, I will run the selftest to check most common assembly problems."); ////MSG_WIZARD_SELFTEST c=20 r=8
-extern const char MSG_WIZARD_XYZ_CAL [] PROGMEM_I1 = ISTR("I will run xyz calibration now. It will take up to 24 mins."); ////MSG_WIZARD_XYZ_CAL c=20 r=8
-extern const char MSG_REMOVE_SHIPPING_HELPERS [] PROGMEM_I1 = ISTR("Please remove shipping helpers first."); ////MSG_REMOVE_SHIPPING_HELPERS c=20 r=3
-extern const char MSG_REMOVE_TEST_PRINT [] PROGMEM_I1 = ISTR("Now remove the test print from steel sheet."); ////MSG_REMOVE_TEST_PRINT c=20 r=4
-extern const char MSG_WIZARD_Z_CAL [] PROGMEM_I1 = ISTR("I will run z calibration now."); ////MSG_WIZARD_Z_CAL c=20 r=8
-extern const char MSG_WIZARD_WILL_PREHEAT [] PROGMEM_I1 = ISTR("Now I will preheat nozzle for PLA."); ////MSG_WIZARD_WILL_PREHEAT c=20 r=4
-extern const char MSG_TM_CAL [] PROGMEM_I1 = ISTR("Thermal model cal. takes approx. 12 mins. See\nprusa.io/tm-cal"); ////MSG_TM_CAL c=20 r=4
-extern const char MSG_SEL_PREHEAT_TEMP [] PROGMEM_I1 = ISTR("Select nozzle preheat temperature which matches your material."); ////MSG_SEL_PREHEAT_TEMP c=20 r=6
-extern const char MSG_WIZARD_REPEAT_V2_CAL [] PROGMEM_I1 = ISTR("Do you want to repeat last step to readjust distance between nozzle and heatbed?"); ////MSG_WIZARD_REPEAT_V2_CAL c=20 r=7
-extern const char MSG_WIZARD_CLEAN_HEATBED [] PROGMEM_I1 = ISTR("Please clean heatbed and then press the knob."); ////MSG_WIZARD_CLEAN_HEATBED c=20 r=8
-extern const char MSG_ADDITIONAL_SHEETS [] PROGMEM_I1 = ISTR("If you have additional steel sheets, calibrate their presets in Settings - HW Setup - Steel sheets."); ////MSG_ADDITIONAL_SHEETS c=20 r=8
-extern const char MSG_X_CORRECTION [] PROGMEM_I1 = ISTR("X-correct"); ////MSG_X_CORRECTION c=13
-extern const char MSG_Y_CORRECTION [] PROGMEM_I1 = ISTR("Y-correct"); ////MSG_Y_CORRECTION c=13
-extern const char MSG_Z_CORRECTION [] PROGMEM_I1 = ISTR("Z-correct"); ////MSG_Z_CORRECTION c=13
-extern const char MSG_EXTRUDER_CORRECTION [] PROGMEM_I1 = ISTR("E-correct"); ////MSG_EXTRUDER_CORRECTION c=13
-extern const char MSG_CHECKS [] PROGMEM_I1 = ISTR("Checks"); ////MSG_CHECKS c=18
-extern const char MSG_TEMPERATURE [] PROGMEM_I1 = ISTR("Temperature"); ////MSG_TEMPERATURE c=18
-extern const char MSG_MOVE_AXIS [] PROGMEM_I1 = ISTR("Move axis"); ////MSG_MOVE_AXIS c=18
-extern const char MSG_DISABLE_STEPPERS [] PROGMEM_I1 = ISTR("Disable steppers"); ////MSG_DISABLE_STEPPERS c=18
-extern const char MSG_LIN_CORRECTION [] PROGMEM_I1 = ISTR("Lin. correction"); ////MSG_LIN_CORRECTION c=18
-extern const char MSG_WIZARD [] PROGMEM_I1 = ISTR("Wizard"); ////MSG_WIZARD c=17
-extern const char MSG_BELTTEST [] PROGMEM_I1 = ISTR("Belt test"); ////MSG_BELTTEST c=18
-extern const char MSG_SELFTEST [] PROGMEM_I1 = ISTR("Selftest"); ////MSG_SELFTEST c=18
-extern const char MSG_CALIBRATE_BED [] PROGMEM_I1 = ISTR("Calibrate XYZ"); ////MSG_CALIBRATE_BED c=18
-extern const char MSG_BED_CORRECTION_MENU [] PROGMEM_I1 = ISTR("Bed level correct"); ////MSG_BED_CORRECTION_MENU c=18
-extern const char MSG_PID_EXTRUDER [] PROGMEM_I1 = ISTR("PID calibration"); ////MSG_PID_EXTRUDER c=17
-extern const char MSG_SHOW_END_STOPS [] PROGMEM_I1 = ISTR("Show end stops"); ////MSG_SHOW_END_STOPS c=18
-extern const char MSG_CALIBRATE_BED_RESET [] PROGMEM_I1 = ISTR("Reset XYZ calibr."); ////MSG_CALIBRATE_BED_RESET c=18
-extern const char MSG_SELECT [] PROGMEM_I1 = ISTR("Select"); ////MSG_SELECT c=18
-extern const char MSG_RENAME [] PROGMEM_I1 = ISTR("Rename"); ////MSG_RENAME c=18
-extern const char MSG_PREHEAT [] PROGMEM_I1 = ISTR("Preheat"); ////MSG_PREHEAT c=18
-extern const char MSG_CNG_SDCARD [] PROGMEM_I1 = ISTR("Change SD card"); ////MSG_CNG_SDCARD c=18
-extern const char MSG_NO_CARD [] PROGMEM_I1 = ISTR("No SD card"); ////MSG_NO_CARD c=18
-extern const char MSG_INIT_SDCARD [] PROGMEM_I1 = ISTR("Init. SD card"); ////MSG_INIT_SDCARD c=18
-extern const char MSG_LOAD_TO_NOZZLE [] PROGMEM_I1 = ISTR("Load to nozzle"); ////MSG_LOAD_TO_NOZZLE c=18
-extern const char MSG_AUTOLOAD_FILAMENT [] PROGMEM_I1 = ISTR("AutoLoad filament"); ////MSG_AUTOLOAD_FILAMENT c=18
-extern const char MSG_STATISTICS [] PROGMEM_I1 = ISTR("Statistics"); ////MSG_STATISTICS c=18
-extern const char MSG_FAIL_STATS [] PROGMEM_I1 = ISTR("Fail stats"); ////MSG_FAIL_STATS c=18
-extern const char MSG_MMU_FAIL_STATS [] PROGMEM_I1 = ISTR("Fail stats MMU"); ////MSG_MMU_FAIL_STATS c=18
-extern const char MSG_SUPPORT [] PROGMEM_I1 = ISTR("Support"); ////MSG_SUPPORT c=18
-extern const char MSG_SPEED [] PROGMEM_I1 = ISTR("Speed"); ////MSG_SPEED c=15
-extern const char MSG_FLOW [] PROGMEM_I1 = ISTR("Flow"); ////MSG_FLOW c=15
-extern const char MSG_INSERT_FIL [] PROGMEM_I1 = ISTR("Insert the filament (do not load it) into the extruder and then press the knob."); ////MSG_INSERT_FIL c=20 r=6
-extern const char MSG_UNLOAD_FILAMENT_REPEAT [] PROGMEM_I1 = ISTR("Please unload the filament first, then repeat this action."); ////MSG_UNLOAD_FILAMENT_REPEAT c=20 r=4
-extern const char MSG_CHECK_IR_CONNECTION [] PROGMEM_I1 = ISTR("Please check the IR sensor connection, unload filament if present."); ////MSG_CHECK_IR_CONNECTION c=20 r=4
-extern const char MSG_FS_VERIFIED [] PROGMEM_I1 = ISTR("Sensor verified, remove the filament now."); ////MSG_FS_VERIFIED c=20 r=3
-extern const char MSG_FIL_FAILED [] PROGMEM_I1 = ISTR("Verification failed, remove the filament and try again."); ////MSG_FIL_FAILED c=20 r=4
-extern const char MSG_SELFTEST_START [] PROGMEM_I1 = ISTR("Selftest start"); ////MSG_SELFTEST_START c=20
-extern const char MSG_SELFTEST_OK [] PROGMEM_I1 = ISTR("Selftest OK"); ////MSG_SELFTEST_OK c=20
-extern const char MSG_SELFTEST_ERROR [] PROGMEM_I1 = ISTR("Selftest error!"); ////MSG_SELFTEST_ERROR c=20
-extern const char MSG_SELFTEST_PLEASECHECK [] PROGMEM_I1 = ISTR("Please check:"); ////MSG_SELFTEST_PLEASECHECK c=20
-extern const char MSG_SELFTEST_HEATERTHERMISTOR [] PROGMEM_I1 = ISTR("Heater/Thermistor"); ////MSG_SELFTEST_HEATERTHERMISTOR c=20
-extern const char MSG_SELFTEST_NOTCONNECTED [] PROGMEM_I1 = ISTR("Not connected"); ////MSG_SELFTEST_NOTCONNECTED c=20
-extern const char MSG_SELFTEST_BEDHEATER [] PROGMEM_I1 = ISTR("Bed/Heater"); ////MSG_SELFTEST_BEDHEATER c=20
-extern const char MSG_SELFTEST_ENDSTOPS [] PROGMEM_I1 = ISTR("Endstops"); ////MSG_SELFTEST_ENDSTOPS c=20
-extern const char MSG_SELFTEST_ENDSTOP [] PROGMEM_I1 = ISTR("Endstop"); ////MSG_SELFTEST_ENDSTOP c=16
-extern const char MSG_SELFTEST_ENDSTOP_NOTHIT [] PROGMEM_I1 = ISTR("Endstop not hit"); ////MSG_SELFTEST_ENDSTOP_NOTHIT c=20
-extern const char MSG_LOOSE_PULLEY [] PROGMEM_I1 = ISTR("Loose pulley"); ////MSG_LOOSE_PULLEY c=20
-extern const char MSG_SELFTEST_AXIS_LENGTH [] PROGMEM_I1 = ISTR("Axis length"); ////MSG_SELFTEST_AXIS_LENGTH c=20
-extern const char MSG_SELFTEST_AXIS [] PROGMEM_I1 = ISTR("Axis"); ////MSG_SELFTEST_AXIS c=16
-extern const char MSG_SELFTEST_FANS [] PROGMEM_I1 = ISTR("Front/left fans"); ////MSG_SELFTEST_FANS c=20
-extern const char MSG_SELFTEST_SWAPPED [] PROGMEM_I1 = ISTR("Swapped"); ////MSG_SELFTEST_SWAPPED c=16
-extern const char MSG_FALSE_TRIGGERING [] PROGMEM_I1 = ISTR("False triggering"); ////MSG_FALSE_TRIGGERING c=20
-extern const char MSG_SELFTEST_FS_LEVEL [] PROGMEM_I1 = ISTR("%s level expected"); ////MSG_SELFTEST_FS_LEVEL c=20
-extern const char MSG_SELFTEST_CHECK_ENDSTOPS [] PROGMEM_I1 = ISTR("Checking endstops"); ////MSG_SELFTEST_CHECK_ENDSTOPS c=20
-extern const char MSG_SELFTEST_CHECK_Z [] PROGMEM_I1 = ISTR("Checking Z axis"); ////MSG_SELFTEST_CHECK_Z c=20
-extern const char MSG_SELFTEST_CHECK_HOTEND [] PROGMEM_I1 = ISTR("Checking hotend"); ////MSG_SELFTEST_CHECK_HOTEND c=20
-extern const char MSG_SELFTEST_CHECK_ALLCORRECT [] PROGMEM_I1 = ISTR("All correct"); ////MSG_SELFTEST_CHECK_ALLCORRECT c=20
-extern const char MSG_CALIBRATING_HOME [] PROGMEM_I1 = ISTR("Calibrating home"); ////MSG_CALIBRATING_HOME c=20
-extern const char MSG_CHECKING_FILE [] PROGMEM_I1 = ISTR("Checking file"); ////MSG_CHECKING_FILE c=17
-extern const char MSG_FILE_INCOMPLETE [] PROGMEM_I1 = ISTR("File incomplete."); ////MSG_FILE_INCOMPLETE c=20 r=3
-extern const char MSG_SD_REMOVED [] PROGMEM_I1 = ISTR("Card removed"); ////MSG_SD_REMOVED c=20
-extern const char MSG_NEW_FIRMWARE_AVAILABLE [] PROGMEM_I1 = ISTR("New firmware version available:"); ////MSG_NEW_FIRMWARE_AVAILABLE c=20 r=2
-extern const char MSG_NEW_FIRMWARE_PLEASE_UPGRADE [] PROGMEM_I1 = ISTR("Please upgrade."); ////MSG_NEW_FIRMWARE_PLEASE_UPGRADE c=20
-extern const char MSG_FW_MK3_DETECTED [] PROGMEM_I1 = ISTR(PRINTER_NAME " firmware detected on " PRINTER_NAME_ALTERNATE " printer"); ////MSG_FW_MK3_DETECTED c=20 r=4
 //not internationalized messages
+#if 0
+const char MSG_FW_VERSION_BETA[] PROGMEM_N1 = "You are using a BETA firmware version! It is in a development state! Use this version with CAUTION as it may DAMAGE the printer!"; ////MSG_FW_VERSION_BETA c=20 r=8
+#endif
 const char MSG_SPOOL_JOIN[] PROGMEM_N1 = "SpoolJoin"; ////MSG_SPOOL_JOIN c=13
 const char MSG_FIRMWARE[] PROGMEM_N1 = "Firmware"; ////MSG_FIRMWARE c=8
-const char MSG_FILAMENT[] PROGMEM_N1 = "Filament"; ////MSG_FILAMENT c=8
 const char MSG_TOSHIBA_FLASH_AIR_COMPATIBILITY[] PROGMEM_N1 = "FlashAir"; ////MSG_TOSHIBA_FLASH_AIR_COMPATIBILITY c=8
 const char MSG_PINDA[] PROGMEM_N1 = "PINDA"; ////MSG_PINDA c=5
 const char MSG_WELCOME[] PROGMEM_N1 = WELCOME_MSG;
+const char MSG_SD_WORKDIR_FAIL[] PROGMEM_N1 = "workDir open failed"; ////
 const char MSG_BROWNOUT_RESET[] PROGMEM_N1 = " Brown out Reset"; ////
 const char MSG_EXTERNAL_RESET[] PROGMEM_N1 = " External Reset"; ////
 const char MSG_FILE_SAVED[] PROGMEM_N1 = "Done saving file."; ////
+const char MSG_POSITION_UNKNOWN[] PROGMEM_N1 = "Home X/Y before Z"; ////
 const char MSG_SOFTWARE_RESET[] PROGMEM_N1 = " Software Reset"; ////
 const char MSG_UNKNOWN_COMMAND[] PROGMEM_N1 = "Unknown command: \""; ////
 const char MSG_WATCHDOG_RESET[] PROGMEM_N1 = " Watchdog Reset"; ////
 const char MSG_Z_MAX[] PROGMEM_N1 = "z_max: "; ////
 const char MSG_Z_MIN[] PROGMEM_N1 = "z_min: "; ////
+const char MSG_ZPROBE_OUT[] PROGMEM_N1 = "Z probe out. bed"; ////
+#ifdef ENABLE_AUTO_BED_LEVELING
+const char MSG_ZPROBE_ZOFFSET[] PROGMEM_N1 = "Z Offset"; ////
+#endif
 const char MSG_TMC_OVERTEMP[] PROGMEM_N1 = "TMC DRIVER OVERTEMP"; ////
 const char MSG_Enqueing[] PROGMEM_N1 = "enqueing \""; ////
+const char MSG_ENDSTOPS_HIT[] PROGMEM_N1 = "endstops hit: "; ////
 const char MSG_SD_ERR_WRITE_TO_FILE[] PROGMEM_N1 = "error writing to file"; ////
 const char MSG_OK[] PROGMEM_N1 = "ok"; ////
 const char MSG_OK_CAPS[] PROGMEM_N1 = "OK"; ////
@@ -403,20 +225,15 @@ const char MSG_ENDSTOP_OPEN[] PROGMEM_N1 = "open"; ////
 const char MSG_POWERUP[] PROGMEM_N1 = "PowerUp"; ////
 const char MSG_ERR_STOPPED[] PROGMEM_N1 = "Printer stopped due to errors. Supervision required."; ////
 const char MSG_ENDSTOP_HIT[] PROGMEM_N1 = "TRIGGERED"; ////
-const char MSG_HOST_ACTION_ASK_PAUSE[] PROGMEM_N1 = "//action:pause"; ////
-const char MSG_HOST_ACTION_PAUSED[] PROGMEM_N1 = "//action:paused"; ////
-const char MSG_HOST_ACTION_ASK_RESUME[] PROGMEM_N1 = "//action:resume"; ////
-const char MSG_HOST_ACTION_RESUMED[] PROGMEM_N1 = "//action:resumed"; ////
-const char MSG_HOST_ACTION_CANCEL[] PROGMEM_N1 = "//action:cancel"; ////
-const char MSG_HOST_ACTION_READY[] PROGMEM_N1 = "//action:ready"; ////
-const char MSG_HOST_ACTION_NOT_READY[] PROGMEM_N1 = "//action:not_ready"; ////
-const char MSG_HOST_ACTION_START[] PROGMEM_N1 = "//action:start"; ////
-const char MSG_HOST_ACTION_UVLO_RECOVERY_READY[] PROGMEM_N1 = "//action:uvlo_recovery_ready"; ////
-const char MSG_HOST_ACTION_UVLO_AUTO_RECOVERY_READY[] PROGMEM_N1 = "//action:uvlo_auto_recovery_ready"; ////
-const char MSG_HOST_ACTION_NOTIFICATION[] PROGMEM_N1 = "//action:notification %S\n"; ////
-#ifdef HOST_SHUTDOWN
-const char MSG_HOST_ACTION_SHUTDOWN[] PROGMEM_N1 = "//action:shutdown"; ////
-#endif //HOST_SHUTOWN
+const char MSG_OCTOPRINT_ASK_PAUSE[] PROGMEM_N1 = "// action:pause"; ////
+const char MSG_OCTOPRINT_PAUSED[] PROGMEM_N1 = "// action:paused"; ////
+const char MSG_OCTOPRINT_ASK_RESUME[] PROGMEM_N1 = "// action:resume"; ////
+const char MSG_OCTOPRINT_RESUMED[] PROGMEM_N1 = "// action:resumed"; ////
+const char MSG_OCTOPRINT_CANCEL[] PROGMEM_N1 = "// action:cancel"; ////
+const char MSG_OCTOPRINT_READY[] PROGMEM_N1 = "// action:ready"; ////
+const char MSG_OCTOPRINT_NOT_READY[] PROGMEM_N1 = "// action:not_ready"; ////
+const char MSG_OCTOPRINT_START[] PROGMEM_N1 = "// action:start"; ////
+const char MSG_OCTOPRINT_UVLO_RECOVERY_READY[] PROGMEM_N1 = "// action:uvlo_recovery_ready"; ////
 const char MSG_FANCHECK_HOTEND[] PROGMEM_N1 = "Err:HOTEND FAN ERROR"; ////c=20
 const char MSG_FANCHECK_PRINT[] PROGMEM_N1 = "Err:PRINT FAN ERROR"; ////c=20
 const char MSG_M112_KILL[] PROGMEM_N1 = "M112 called. Emergency Stop."; ////c=20
@@ -424,13 +241,10 @@ const char MSG_ADVANCE_K[] PROGMEM_N1 = "Advance K:"; ////c=13
 const char MSG_POWERPANIC_DETECTED[] PROGMEM_N1 = "POWER PANIC DETECTED"; ////c=20
 const char MSG_LCD_STATUS_CHANGED[] PROGMEM_N1 = "LCD status changed";
 const char MSG_UNKNOWN_CODE[] PROGMEM_N1 = "Unknown %c code: %s\n";
-const char MSG_FILAMENT_RUNOUT_DETECTED[] PROGMEM_N1 = "Filament runout detected!"; ////c=20 r=2
 
 // Common G-gcodes
 const char G1_E_F2700[] PROGMEM_N1 = "G1 E%-.3f F2700";
 const char G28W[] PROGMEM_N1 = "G28 W";
-const char MSG_G90[] PROGMEM_N1 = "G90";
-const char MSG_G91[] PROGMEM_N1 = "G91";
 const char MSG_M23[] PROGMEM_N1 = "M23 %s";
 const char MSG_M24[] PROGMEM_N1 = "M24";
 const char MSG_M83[] PROGMEM_N1 = "M83";

Firmware/messages.h

@@ -21,7 +21,6 @@ extern const char MSG_BED_HEATING[];
 extern const char MSG_BED_LEVELING_FAILED_POINT_LOW[];
 extern const char MSG_BED_SKEW_OFFSET_DETECTION_FITTING_FAILED[];
 extern const char MSG_BELT_STATUS[];
-extern const char MSG_EJECT[];
 extern const char MSG_CANCEL[];
 extern const char MSG_CALIBRATE_Z_AUTO[];
 extern const char MSG_CARD_MENU[];
@@ -38,6 +37,7 @@ extern const char MSG_ERROR[];
 extern const char MSG_EXTRUDER[];
 extern const char MSG_FANS_CHECK[];
 extern const char MSG_FIL_RUNOUTS[];
+extern const char MSG_FILAMENT[];
 extern const char MSG_FAN_SPEED[];
 extern const char MSG_HOTEND_FAN_SPEED[];
 extern const char MSG_PRINT_FAN_SPEED[];
@@ -104,15 +104,8 @@ extern const char MSG_SELFTEST_MOTOR[];
 extern const char MSG_SELFTEST_FILAMENT_SENSOR[];
 extern const char MSG_SELFTEST_WIRINGERROR[];
 extern const char MSG_SETTINGS[];
-#ifndef REPLACE_SETREADY
 extern const char MSG_SET_READY[];
 extern const char MSG_SET_NOT_READY[];
-#else
-extern const char MSG_HOSTPRINT[];
-#endif
-#ifdef HOST_SHUTDOWN
-extern const char MSG_SHUTDOWN_HOST[];
-#endif //HOST_SHUTOWN
 extern const char MSG_SELECT_LANGUAGE[];
 extern const char MSG_SORTING_FILES[];
 extern const char MSG_TOTAL[];
@@ -127,7 +120,6 @@ extern const char MSG_SILENT[];
 extern const char MSG_NORMAL[];
 extern const char MSG_STEALTH[];
 extern const char MSG_STEEL_SHEET_CHECK[];
-extern const char MSG_Z_CALIBRATION_PROMPT[];
 extern const char MSG_STOP_PRINT[];
 extern const char MSG_STOPPED[];
 extern const char MSG_PINDA_CALIBRATION[];
@@ -157,7 +149,6 @@ extern const char MSG_GCODE_NEWER_FIRMWARE_CONTINUE[];
 extern const char MSG_GCODE_NEWER_FIRMWARE_CANCELLED[];
 extern const char MSG_GCODE_DIFF_CONTINUE[];
 extern const char MSG_GCODE_DIFF_CANCELLED[];
-extern const char MSG_MISSING_FILAMENT[];
 extern const char MSG_NOZZLE_DIFFERS_CONTINUE[];
 extern const char MSG_NOZZLE_DIFFERS_CANCELLED[];
 extern const char MSG_NOZZLE_DIAMETER[];
@@ -200,201 +191,34 @@ extern const char MSG_LOAD_ALL[];
 extern const char MSG_NOZZLE_CNG_MENU [];
 extern const char MSG_NOZZLE_CNG_READ_HELP [];
 extern const char MSG_NOZZLE_CNG_CHANGED [];
-#ifdef QUICK_NOZZLE_CHANGE
-extern const char MSG_NOZZLE_CNG_COOLDOWN [];
-#endif //QUICK_NOZZLE_CHANGE
 extern const char MSG_REPRINT [];
-extern const char MSG_FILE_CNT [];
-extern const char MSG_CHANGED_MOTHERBOARD [];
-extern const char MSG_CHANGED_PRINTER [];
-extern const char MSG_CHANGED_BOTH [];
-extern const char MSG_DEFAULT_SETTINGS_LOADED [];
-extern const char MSG_FORCE_SELFTEST [];
-extern const char MSG_MBL_FAILED [];
-extern const char MSG_ZLEVELING_ENFORCED [];
-extern const char MSG_UNLOAD_SUCCESSFUL [];
-extern const char MSG_CHECK_IDLER [];
-extern const char MSG_RUN_XYZ [];
-extern const char MSG_TEMP_CAL_WARNING [];
-extern const char MSG_USERWAIT [];
-extern const char MSG_NO_MOVE [];
-extern const char MSG_BED_HEATING_SAFETY_DISABLED [];
-extern const char MSG_PRESS_TO_PREHEAT [];
-extern const char MSG_IMPROVE_BED_OFFSET_AND_SKEW_LINE1 [];
-extern const char MSG_MMU_RESTORE_TEMP [];
-extern const char MSG_MMU_SENSITIVITY [];
-extern const char MSG_RECOVERING_PRINT [];
-extern const char MSG_HOMEYZ_DONE [];
-extern const char MSG_PINDA_PREHEAT [];
-extern const char MSG_PID_RUNNING [];
-extern const char MSG_PID_FINISHED [];
-extern const char MSG_AMBIENT [];
-extern const char MSG_DATE [];
-extern const char MSG_MMU_CONNECTED [];
-extern const char MSG_UNKNOWN [];
-extern const char MSG_PRINTER_IP [];
-extern const char MSG_XYZ_DETAILS [];
-extern const char MSG_INFO_EXTRUDER [];
-extern const char MSG_INFO_SENSORS [];
-extern const char MSG_MENU_TEMPERATURES [];
-extern const char MSG_MENU_VOLTAGES [];
-extern const char MSG_PRESS_KNOB [];
-extern const char MSG_TO_LOAD_FIL [];
-extern const char MSG_TO_UNLOAD_FIL [];
-extern const char MSG_PREHEATING_TO_LOAD [];
-extern const char MSG_PREHEATING_TO_UNLOAD [];
-extern const char MSG_PREHEATING_TO_EJECT [];
-extern const char MSG_PREHEATING_TO_CUT [];
-extern const char MSG_INSERT_FILAMENT [];
-extern const char MSG_PRESS [];
-extern const char MSG_CHANGE_SUCCESS [];
-extern const char MSG_LOADING_COLOR [];
-extern const char MSG_CORRECTLY [];
-extern const char MSG_NOT_LOADED [];
-extern const char MSG_NOT_COLOR [];
-#ifndef REMOVE_AUTOLOAD_FILAMENT_MENU_ENTRY
-extern const char MSG_AUTOLOADING_ENABLED [];
-#endif //REMOVE_AUTOLOAD_FILAMENT_MENU_ENTRY
-extern const char MSG_FILAMENT_USED [];
-extern const char MSG_PRINT_TIME [];
-extern const char MSG_TOTAL_FILAMENT [];
-extern const char MSG_TOTAL_PRINT_TIME [];
-extern const char MSG_Y_DIST_FROM_MIN [];
-extern const char MSG_LEFT [];
-extern const char MSG_RIGHT [];
-extern const char MSG_MEASURED_SKEW [];
-extern const char MSG_SLIGHT_SKEW [];
-extern const char MSG_SEVERE_SKEW [];
-extern const char MSG_MEASURED_OFFSET [];
-extern const char MSG_BABYSTEPPING_Z [];
-extern const char MSG_BED_CORRECTION_LEFT [];
-extern const char MSG_BED_CORRECTION_RIGHT [];
-extern const char MSG_BED_CORRECTION_FRONT [];
-extern const char MSG_BED_CORRECTION_REAR [];
-extern const char MSG_SET_TEMPERATURE [];
-extern const char MSG_WAITING_TEMP_PINDA [];
-extern const char MSG_WAITING_TEMP [];
-extern const char MSG_MOVE_CARRIAGE_TO_THE_TOP_Z [];
-extern const char MSG_MOVE_CARRIAGE_TO_THE_TOP [];
-extern const char MSG_CONFIRM_CARRIAGE_AT_THE_TOP [];
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_POINT_NOT_FOUND [];
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_FAILED_FRONT_BOTH_FAR [];
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_FAILED_FRONT_RIGHT_FAR [];
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_WARNING_FRONT_BOTH_FAR [];
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_WARNING_FRONT_RIGHT_FAR [];
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_PERFECT [];
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_SKEW_MILD [];
-extern const char MSG_BED_SKEW_OFFSET_DETECTION_SKEW_EXTREME [];
-extern const char MSG_PINDA_CAL_FAILED [];
-extern const char MSG_MOVE_X [];
-extern const char MSG_MOVE_Y [];
-extern const char MSG_MOVE_Z [];
-extern const char MSG_CRASH_DET_ONLY_IN_NORMAL [];
-extern const char MSG_CRASH_DET_STEALTH_FORCE_OFF [];
-extern const char MSG_MODE_CHANGE_IN_PROGRESS [];
-extern const char MSG_COPY_SEL_LANG [];
-extern const char MSG_SHEET_OFFSET [];
-extern const char MSG_PLEASE_LOAD_PLA [];
-extern const char MSG_WIZARD_RERUN [];
-extern const char MSG_MMU_INSERT_FILAMENT_FIRST_TUBE [];
-extern const char MSG_WIZARD_LOAD_FILAMENT [];
-extern const char MSG_WIZARD_V2_CAL [];
-extern const char MSG_SELECT_FIL_1ST_LAYERCAL [];
-extern const char MSG_SELECT_TEMP_MATCHES_MATERIAL [];
-extern const char MSG_WIZARD_V2_CAL_2 [];
-extern const char MSG_WIZARD_SELFTEST [];
-extern const char MSG_WIZARD_XYZ_CAL [];
-extern const char MSG_REMOVE_SHIPPING_HELPERS [];
-extern const char MSG_REMOVE_TEST_PRINT [];
-extern const char MSG_WIZARD_Z_CAL [];
-extern const char MSG_WIZARD_WILL_PREHEAT [];
-extern const char MSG_TM_CAL [];
-extern const char MSG_SEL_PREHEAT_TEMP [];
-extern const char MSG_WIZARD_REPEAT_V2_CAL [];
-extern const char MSG_WIZARD_CLEAN_HEATBED [];
-extern const char MSG_ADDITIONAL_SHEETS [];
-extern const char MSG_X_CORRECTION [];
-extern const char MSG_Y_CORRECTION [];
-extern const char MSG_Z_CORRECTION [];
-extern const char MSG_EXTRUDER_CORRECTION [];
-extern const char MSG_CHECKS [];
-extern const char MSG_TEMPERATURE [];
-extern const char MSG_MOVE_AXIS [];
-extern const char MSG_DISABLE_STEPPERS [];
-extern const char MSG_LIN_CORRECTION [];
-extern const char MSG_WIZARD [];
-extern const char MSG_BELTTEST [];
-extern const char MSG_SELFTEST [];
-extern const char MSG_CALIBRATE_BED [];
-extern const char MSG_BED_CORRECTION_MENU [];
-extern const char MSG_PID_EXTRUDER [];
-extern const char MSG_SHOW_END_STOPS [];
-extern const char MSG_CALIBRATE_BED_RESET [];
-extern const char MSG_SELECT [];
-extern const char MSG_RENAME [];
-extern const char MSG_PREHEAT [];
-extern const char MSG_CNG_SDCARD [];
-extern const char MSG_NO_CARD [];
-extern const char MSG_INIT_SDCARD [];
-extern const char MSG_LOAD_TO_NOZZLE [];
-extern const char MSG_AUTOLOAD_FILAMENT [];
-extern const char MSG_STATISTICS [];
-extern const char MSG_FAIL_STATS [];
-extern const char MSG_MMU_FAIL_STATS [];
-extern const char MSG_SUPPORT [];
-extern const char MSG_SPEED [];
-extern const char MSG_FLOW [];
-extern const char MSG_INSERT_FIL [];
-extern const char MSG_UNLOAD_FILAMENT_REPEAT [];
-extern const char MSG_CHECK_IR_CONNECTION [];
-extern const char MSG_FS_VERIFIED [];
-extern const char MSG_FIL_FAILED [];
-extern const char MSG_SELFTEST_START [];
-extern const char MSG_SELFTEST_OK [];
-extern const char MSG_SELFTEST_ERROR [];
-extern const char MSG_SELFTEST_PLEASECHECK [];
-extern const char MSG_SELFTEST_HEATERTHERMISTOR [];
-extern const char MSG_SELFTEST_NOTCONNECTED [];
-extern const char MSG_SELFTEST_BEDHEATER [];
-extern const char MSG_SELFTEST_ENDSTOPS [];
-extern const char MSG_SELFTEST_ENDSTOP [];
-extern const char MSG_SELFTEST_ENDSTOP_NOTHIT [];
-extern const char MSG_LOOSE_PULLEY [];
-extern const char MSG_SELFTEST_AXIS_LENGTH [];
-extern const char MSG_SELFTEST_AXIS [];
-extern const char MSG_SELFTEST_FANS [];
-extern const char MSG_SELFTEST_SWAPPED [];
-extern const char MSG_FALSE_TRIGGERING [];
-extern const char MSG_SELFTEST_FS_LEVEL [];
-extern const char MSG_SELFTEST_CHECK_ENDSTOPS [];
-extern const char MSG_SELFTEST_CHECK_Z [];
-extern const char MSG_SELFTEST_CHECK_HOTEND [];
-extern const char MSG_SELFTEST_CHECK_ALLCORRECT [];
-extern const char MSG_CALIBRATING_HOME [];
-extern const char MSG_CHECKING_FILE [];
-extern const char MSG_FILE_INCOMPLETE [];
-extern const char MSG_SD_REMOVED [];
-extern const char MSG_NEW_FIRMWARE_AVAILABLE [];
-extern const char MSG_NEW_FIRMWARE_PLEASE_UPGRADE [];
-extern const char MSG_FW_MK3_DETECTED [];
 
 //not internationalized messages
+#if 0
+extern const char MSG_FW_VERSION_BETA[];
+#endif
 extern const char MSG_SPOOL_JOIN[];
 extern const char MSG_FIRMWARE[];
-extern const char MSG_FILAMENT[];
 extern const char MSG_TOSHIBA_FLASH_AIR_COMPATIBILITY[];
 extern const char MSG_PINDA[];
 extern const char MSG_WELCOME[];
+extern const char MSG_SD_WORKDIR_FAIL[];
 extern const char MSG_BROWNOUT_RESET[];
 extern const char MSG_EXTERNAL_RESET[];
 extern const char MSG_FILE_SAVED[];
+extern const char MSG_POSITION_UNKNOWN[];
 extern const char MSG_SOFTWARE_RESET[];
 extern const char MSG_UNKNOWN_COMMAND[];
 extern const char MSG_WATCHDOG_RESET[];
 extern const char MSG_Z_MAX[];
 extern const char MSG_Z_MIN[];
+extern const char MSG_ZPROBE_OUT[];
+#ifdef ENABLE_AUTO_BED_LEVELING
+extern const char MSG_ZPROBE_ZOFFSET[];
+#endif
 extern const char MSG_TMC_OVERTEMP[];
 extern const char MSG_Enqueing[];
+extern const char MSG_ENDSTOPS_HIT[];
 extern const char MSG_SD_ERR_WRITE_TO_FILE[];
 extern const char MSG_OK[];
 extern const char MSG_OK_CAPS[];
@@ -405,20 +229,15 @@ extern const char MSG_ERR_STOPPED[];
 extern const char MSG_ENDSTOP_HIT[];
 extern const char MSG_EJECT_FROM_MMU[];
 extern const char MSG_CUT_FILAMENT[];
-extern const char MSG_HOST_ACTION_ASK_PAUSE[];
-extern const char MSG_HOST_ACTION_PAUSED[];
-extern const char MSG_HOST_ACTION_ASK_RESUME[];
-extern const char MSG_HOST_ACTION_RESUMED[];
-extern const char MSG_HOST_ACTION_CANCEL[];
-extern const char MSG_HOST_ACTION_READY[];
-extern const char MSG_HOST_ACTION_NOT_READY[];
-extern const char MSG_HOST_ACTION_START[];
-extern const char MSG_HOST_ACTION_UVLO_RECOVERY_READY[];
-extern const char MSG_HOST_ACTION_UVLO_AUTO_RECOVERY_READY[];
-extern const char MSG_HOST_ACTION_NOTIFICATION[];
-#ifdef HOST_SHUTDOWN
-extern const char MSG_HOST_ACTION_SHUTDOWN[];
-#endif //HOST_SHUTOWN
+extern const char MSG_OCTOPRINT_ASK_PAUSE[];
+extern const char MSG_OCTOPRINT_PAUSED[];
+extern const char MSG_OCTOPRINT_ASK_RESUME[];
+extern const char MSG_OCTOPRINT_RESUMED[];
+extern const char MSG_OCTOPRINT_CANCEL[];
+extern const char MSG_OCTOPRINT_READY[];
+extern const char MSG_OCTOPRINT_NOT_READY[];
+extern const char MSG_OCTOPRINT_START[];
+extern const char MSG_OCTOPRINT_UVLO_RECOVERY_READY[];
 extern const char MSG_FANCHECK_HOTEND[];
 extern const char MSG_FANCHECK_PRINT[];
 extern const char MSG_M112_KILL[];
@@ -426,13 +245,10 @@ extern const char MSG_ADVANCE_K[];
 extern const char MSG_POWERPANIC_DETECTED[];
 extern const char MSG_LCD_STATUS_CHANGED[];
 extern const char MSG_UNKNOWN_CODE[];
-extern const char MSG_FILAMENT_RUNOUT_DETECTED[];
 
 // Common G-gcodes
 extern const char G1_E_F2700[];
 extern const char G28W[];
-extern const char MSG_G90[];
-extern const char MSG_G91[];
 extern const char MSG_M23[];
 extern const char MSG_M24[];
 extern const char MSG_M83[];

Firmware/mmu2.cpp

@@ -34,7 +34,7 @@ void waitForHotendTargetTemp(uint16_t delay, F f) {
 }
 
 void WaitForHotendTargetTempBeep() {
-    waitForHotendTargetTemp(200, [] {});
+    waitForHotendTargetTemp(3000, []{ });
     MakeSound(Prompt);
 }
 
@@ -73,17 +73,14 @@ void MMU2::Start() {
     mmu2Serial.flush(); // make sure the UART buffer is clear before starting communication
 
     SetCurrentTool(MMU2_NO_TOOL);
+    state = xState::Connecting;
 
     // start the communication
+    logic.Start();
     logic.ResetRetryAttempts();
     logic.ResetCommunicationTimeoutAttempts();
-
-    state = xState::Connecting;
-    logic.Start();
 }
 
-MMU2::~MMU2() {}
-
 void MMU2::Stop() {
     StopKeepPowered();
     PowerOff();
@@ -156,9 +153,8 @@ void MMU2::PowerOn() {
 }
 
 bool MMU2::ReadRegister(uint8_t address) {
-    if (!WaitForMMUReady()) {
+    if (!WaitForMMUReady())
         return false;
-    }
     do {
         logic.ReadRegister(address); // we may signal the accepted/rejected status of the response as return value of this function
     } while (!manage_response(false, false));
@@ -169,9 +165,8 @@ bool MMU2::ReadRegister(uint8_t address) {
 }
 
 bool __attribute__((noinline)) MMU2::WriteRegister(uint8_t address, uint16_t data) {
-    if (!WaitForMMUReady()) {
+    if (!WaitForMMUReady())
         return false;
-    }
 
     // special cases - intercept requests of registers which influence the printer's behaviour too + perform the change even on the printer's side
     switch (address) {
@@ -197,11 +192,12 @@ void MMU2::mmu_loop() {
     // Atomic compare_exchange would have been the most appropriate solution here, but this gets called only in Marlin's task,
     // so thread safety should be kept
     static bool avoidRecursion = false;
-    if (avoidRecursion) {
+    if (avoidRecursion)
         return;
-    }
     avoidRecursion = true;
+
     mmu_loop_inner(true);
+
     avoidRecursion = false;
 }
 
@@ -212,7 +208,7 @@ void __attribute__((noinline)) MMU2::mmu_loop_inner(bool reportErrors) {
 
 void MMU2::CheckFINDARunout() {
     // Check for FINDA filament runout
-    if (!FindaDetectsFilament() && check_fsensor()) { // Check if we have filament runout detected from sensors
+    if (!FindaDetectsFilament() && check_fsensor()) {
         SERIAL_ECHOLNPGM("FINDA filament runout!");
         marlin_stop_and_save_print_to_ram();
         restore_print_from_ram_and_continue(0);
@@ -305,12 +301,8 @@ bool MMU2::VerifyFilamentEnteredPTFE() {
             filament_inserted = filament_inserted && (WhereIsFilament() == FilamentState::AT_FSENSOR);
             tlur.Progress(filament_inserted);
             safe_delay_keep_alive(0);
-            if (planner_draining()) {
-                return false; // power panic or a similar issue happened, bail out fast
-            }
         }
     }
-
     Disable_E0();
     if (!filament_inserted) {
         IncrementLoadFails();
@@ -326,9 +318,8 @@ bool MMU2::ToolChangeCommonOnce(uint8_t slot) {
             Disable_E0(); // it may seem counterintuitive to disable the E-motor, but it gets enabled in the planner whenever the E-motor is to move
             tool_change_extruder = slot;
             logic.ToolChange(slot); // let the MMU pull the filament out and push a new one in
-            if (manage_response(true, true)) {
+            if (manage_response(true, true))
                 break;
-            }
             // otherwise: failed to perform the command - unload first and then let it run again
             IncrementMMUFails();
 
@@ -344,7 +335,7 @@ bool MMU2::ToolChangeCommonOnce(uint8_t slot) {
         }
         if (VerifyFilamentEnteredPTFE()) {
             return true; // success
-        } else { // Prepare a retry attempt
+        } else {         // Prepare a retry attempt
             UnloadInner();
             if (retries == 2 && cutter_enabled()) {
                 CutFilamentInner(slot); // try cutting filament tip at the last attempt
@@ -356,9 +347,6 @@ bool MMU2::ToolChangeCommonOnce(uint8_t slot) {
 
 void MMU2::ToolChangeCommon(uint8_t slot) {
     while (!ToolChangeCommonOnce(slot)) { // while not successfully fed into extruder's PTFE tube
-        if (planner_draining()) {
-            return; // power panic happening, pretend the G-code finished ok
-        }
         // failed autoretry, report an error by forcing a "printer" error into the MMU infrastructure - it is a hack to leverage existing code
         // @@TODO theoretically logic layer may not need to be spoiled with the printer error - may be just the manage_response needs it...
         logic.SetPrinterError(ErrorCode::LOAD_TO_EXTRUDER_FAILED);
@@ -369,16 +357,15 @@ void MMU2::ToolChangeCommon(uint8_t slot) {
         static_cast<void>(manage_response(true, true)); // yes, I'd like to silence [[nodiscard]] warning at this spot by casting to void
     }
 
-    SetCurrentTool(slot); // filament change is finished
+    SetCurrentTool(slot); //filament change is finished
     SpoolJoin::spooljoin.setSlot(slot);
 
     ++toolchange_counter;
 }
 
 bool MMU2::tool_change(uint8_t slot) {
-    if (!WaitForMMUReady()) {
+    if (!WaitForMMUReady())
         return false;
-    }
 
     if (slot != extruder) {
         if (/*FindaDetectsFilament()*/
@@ -403,9 +390,8 @@ bool MMU2::tool_change(uint8_t slot) {
 ///- Tx Same as T?, except nozzle doesn't have to be preheated. Tc must be placed after extruder nozzle is preheated to finish filament load.
 ///- Tc Load to nozzle after filament was prepared by Tx and extruder nozzle is already heated.
 bool MMU2::tool_change(char code, uint8_t slot) {
-    if (!WaitForMMUReady()) {
+    if (!WaitForMMUReady())
         return false;
-    }
 
     FSensorBlockRunout blockRunout;
 
@@ -449,9 +435,8 @@ void MMU2::SetCurrentTool(uint8_t ex){
 }
 
 bool MMU2::set_filament_type(uint8_t /*slot*/, uint8_t /*type*/) {
-    if (!WaitForMMUReady()) {
+    if (!WaitForMMUReady())
         return false;
-    }
 
     // @@TODO - this is not supported in the new MMU yet
     //    slot = slot; // @@TODO
@@ -476,9 +461,8 @@ void MMU2::UnloadInner() {
     for (;;) {
         Disable_E0();
         logic.UnloadFilament();
-        if (manage_response(false, true)) {
+        if (manage_response(false, true))
             break;
-        }
         IncrementMMUFails();
     }
     MakeSound(Confirm);
@@ -489,9 +473,8 @@ void MMU2::UnloadInner() {
 }
 
 bool MMU2::unload() {
-    if (!WaitForMMUReady()) {
+    if (!WaitForMMUReady())
         return false;
-    }
 
     WaitForHotendTargetTempBeep();
 
@@ -499,7 +482,6 @@ bool MMU2::unload() {
         ReportingRAII rep(CommandInProgress::UnloadFilament);
         UnloadInner();
     }
-
     ScreenUpdateEnable();
     return true;
 }
@@ -508,17 +490,15 @@ void MMU2::CutFilamentInner(uint8_t slot) {
     for (;;) {
         Disable_E0();
         logic.CutFilament(slot);
-        if (manage_response(false, true)) {
+        if (manage_response(false, true))
             break;
-        }
         IncrementMMUFails();
     }
 }
 
 bool MMU2::cut_filament(uint8_t slot, bool enableFullScreenMsg /*= true*/) {
-    if (!WaitForMMUReady()) {
+    if (!WaitForMMUReady())
         return false;
-    }
 
     if (enableFullScreenMsg) {
         FullScreenMsgCut(slot);
@@ -548,9 +528,8 @@ bool MMU2::loading_test(uint8_t slot) {
 }
 
 bool MMU2::load_filament(uint8_t slot) {
-    if (!WaitForMMUReady()) {
+    if (!WaitForMMUReady())
         return false;
-    }
 
     FullScreenMsgLoad(slot);
     {
@@ -558,9 +537,8 @@ bool MMU2::load_filament(uint8_t slot) {
         for (;;) {
             Disable_E0();
             logic.LoadFilament(slot);
-            if (manage_response(false, false)) {
+            if (manage_response(false, false))
                 break;
-            }
             IncrementMMUFails();
         }
         MakeSound(SoundType::Confirm);
@@ -570,9 +548,8 @@ bool MMU2::load_filament(uint8_t slot) {
 }
 
 bool MMU2::load_filament_to_nozzle(uint8_t slot) {
-    if (!WaitForMMUReady()) {
+    if (!WaitForMMUReady())
         return false;
-    }
 
     WaitForHotendTargetTempBeep();
 
@@ -597,9 +574,8 @@ bool MMU2::load_filament_to_nozzle(uint8_t slot) {
 }
 
 bool MMU2::eject_filament(uint8_t slot, bool enableFullScreenMsg /* = true */) {
-    if (!WaitForMMUReady()) {
+    if (!WaitForMMUReady())
         return false;
-    }
 
     if (enableFullScreenMsg) {
         FullScreenMsgEject(slot);
@@ -613,9 +589,8 @@ bool MMU2::eject_filament(uint8_t slot, bool enableFullScreenMsg /* = true */) {
         for (;;) {
             Disable_E0();
             logic.EjectFilament(slot);
-            if (manage_response(false, true)) {
+            if (manage_response(false, true))
                 break;
-            }
             IncrementMMUFails();
         }
         SetCurrentTool(MMU2_NO_TOOL);
@@ -636,9 +611,8 @@ void MMU2::Home(uint8_t mode) {
 }
 
 void MMU2::SaveHotendTemp(bool turn_off_nozzle) {
-    if (mmu_print_saved & SavedState::Cooldown) {
+    if (mmu_print_saved & SavedState::Cooldown)
         return;
-    }
 
     if (turn_off_nozzle && !(mmu_print_saved & SavedState::CooldownPending)) {
         Disable_E0();
@@ -727,7 +701,8 @@ void MMU2::CheckUserInput() {
         lastButton = Buttons::NoButton; // Clear it.
     }
 
-    if (mmu2.MMULastErrorSource() == ErrorSourcePrinter && btn != Buttons::NoButton) {
+    if (mmu2.MMULastErrorSource() == MMU2::ErrorSourcePrinter && btn != Buttons::NoButton)
+    {
         // When the printer has raised an error screen, and a button was selected
         // the error screen should always be dismissed.
         ClearPrinterError();
@@ -745,7 +720,7 @@ void MMU2::CheckUserInput() {
         SERIAL_ECHOLN((int)buttons_to_uint8t(btn));
         ResumeHotendTemp(); // Recover the hotend temp before we attempt to do anything else...
 
-        if (mmu2.MMULastErrorSource() == ErrorSourceMMU) {
+        if (mmu2.MMULastErrorSource() == MMU2::ErrorSourceMMU) {
             // Do not send a button to the MMU unless the MMU is in error state
             Button(buttons_to_uint8t(btn));
         }
@@ -807,7 +782,6 @@ bool MMU2::manage_response(const bool move_axes, const bool turn_off_nozzle) {
         // - failed -> then do the safety moves on the printer like before
         // - finished ok -> proceed with reading other commands
         safe_delay_keep_alive(0); // calls LogicStep() and remembers its return status
-                                 // also disables stepper motor unlocking
 
         if (mmu_print_saved & SavedState::CooldownPending) {
             if (!nozzleTimeout.running()) {
@@ -829,8 +803,9 @@ bool MMU2::manage_response(const bool move_axes, const bool turn_off_nozzle) {
             // command/operation completed, let Marlin continue its work
             // the E may have some more moves to finish - wait for them
             ResumeHotendTemp();
-            ResumeUnpark(); // We can now travel back to the tower or wherever we were when we saved.
-            if (!TuneMenuEntered()) {
+            ResumeUnpark();             // We can now travel back to the tower or wherever we were when we saved.
+            if (!TuneMenuEntered())
+            {
                 // If the error screen is sleeping (running 'Tune' menu)
                 // then don't reset retry attempts because we this will trigger
                 // an automatic retry attempt when 'Tune' button is selected. We want the
@@ -945,19 +920,15 @@ void MMU2::filament_ramming() {
     execute_extruder_sequence(ramming_sequence, sizeof(ramming_sequence) / sizeof(E_Step));
 }
 
-void MMU2::execute_extruder_sequence(const E_Step *sequence, uint8_t stepCount) {
+void MMU2::execute_extruder_sequence(const E_Step *sequence, uint8_t steps) {
     planner_synchronize();
 
-    // Plan the moves
     const E_Step *step = sequence;
-    for (uint8_t i = stepCount; i > 0; --i) {
+    for (uint8_t i = steps; i > 0; --i) {
         extruder_move(pgm_read_float(&(step->extrude)), pgm_read_float(&(step->feedRate)));
         step++;
     }
-
-    // Wait for the moves to finish
-    // it looks like it's better to sync the moves at the end - smoother move (if the sequence is not too long).
-    planner_synchronize();
+    planner_synchronize(); // it looks like it's better to sync the moves at the end - smoother move (if the sequence is not too long).
 
     Disable_E0();
 }
@@ -1060,7 +1031,7 @@ void MMU2::OnMMUProgressMsgChanged(ProgressCode pc) {
     switch (pc) {
     case ProgressCode::UnloadingToFinda:
         if ((CommandInProgress)logic.CommandInProgress() == CommandInProgress::UnloadFilament
-            || ((CommandInProgress)logic.CommandInProgress() == CommandInProgress::ToolChange)) {
+        || ((CommandInProgress)logic.CommandInProgress() == CommandInProgress::ToolChange)) {
             // If MK3S sent U0 command, ramming sequence takes care of releasing the filament.
             // If Toolchange is done while printing, PrusaSlicer takes care of releasing the filament
             // If printing is not in progress, ToolChange will issue a U0 command.
@@ -1108,10 +1079,14 @@ void MMU2::OnMMUProgressMsgSame(ProgressCode pc) {
             case FilamentState::AT_FSENSOR:
                 // fsensor triggered, finish FeedingToExtruder state
                 loadFilamentStarted = false;
+
+                // Abort any excess E-move from the planner queue
                 planner_abort_queued_moves();
-                {
-                    extruder_move(logic.ExtraLoadDistance() + 2, logic.PulleySlowFeedRate());
-                }
+
+                // After the MMU knows the FSENSOR is triggered it will:
+                // 1. Push the filament by additional 30mm (see fsensorToNozzle)
+                // 2. Disengage the idler and push another 2mm.
+                extruder_move(logic.ExtraLoadDistance() + 2, logic.PulleySlowFeedRate());
                 break;
             case FilamentState::NOT_PRESENT:
                 // fsensor not triggered, continue moving extruder

Firmware/mmu2.h

@@ -11,7 +11,6 @@ typedef float feedRate_t;
 #else
     #include "protocol_logic.h"
     #include <atomic>
-    #include <memory>
 #endif
 
 struct E_Step;
@@ -33,7 +32,6 @@ struct Version {
 class MMU2 {
 public:
     MMU2();
-    ~MMU2();
 
     /// Powers ON the MMU, then initializes the UART and protocol logic
     void Start();
@@ -50,17 +48,17 @@ public:
 
     /// Different levels of resetting the MMU
     enum ResetForm : uint8_t {
-        Software = 0, ///< sends a X0 command into the MMU, the MMU will watchdog-reset itself
-        ResetPin = 1, ///< trigger the reset pin of the MMU
-        CutThePower = 2, ///< power off and power on (that includes +5V and +24V power lines)
+        Software = 0,     ///< sends a X0 command into the MMU, the MMU will watchdog-reset itself
+        ResetPin = 1,     ///< trigger the reset pin of the MMU
+        CutThePower = 2,  ///< power off and power on (that includes +5V and +24V power lines)
         EraseEEPROM = 42, ///< erase MMU EEPROM and then perform a software reset
     };
 
     /// Saved print state on error.
     enum SavedState : uint8_t {
-        None = 0, // No state saved.
+        None = 0,         // No state saved.
         ParkExtruder = 1, // The extruder was parked.
-        Cooldown = 2, // The extruder was allowed to cool.
+        Cooldown = 2,     // The extruder was allowed to cool.
         CooldownPending = 4,
     };
 
@@ -209,9 +207,9 @@ public:
     };
     inline void InvokeErrorScreen(ErrorCode ec) {
         // The printer may not raise an error when the MMU is busy
-        if (!logic.CommandInProgress() // MMU must not be busy
+        if (!logic.CommandInProgress()                // MMU must not be busy
             && MMUCurrentErrorCode() == ErrorCode::OK // The protocol must not be in error state
-            && lastErrorCode != ec) // The error code is not a duplicate
+            && lastErrorCode != ec)                   // The error code is not a duplicate
         {
             ReportError(ec, ErrorSource::ErrorSourcePrinter);
         }
@@ -275,9 +273,7 @@ private:
     StepStatus LogicStep(bool reportErrors);
 
     void filament_ramming();
-
-    void execute_extruder_sequence(const E_Step *sequence, uint8_t stepCount);
-
+    void execute_extruder_sequence(const E_Step *sequence, uint8_t steps);
     void execute_load_to_nozzle_sequence();
 
     /// Reports an error into attached ExtUIs
@@ -346,9 +342,8 @@ private:
 
     void SetCurrentTool(uint8_t ex);
 
-    ProtocolLogic logic; ///< implementation of the protocol logic layer
-
-    uint8_t extruder; ///< currently active slot in the MMU ... somewhat... not sure where to get it from yet
+    ProtocolLogic logic;          ///< implementation of the protocol logic layer
+    uint8_t extruder;             ///< currently active slot in the MMU ... somewhat... not sure where to get it from yet
     uint8_t tool_change_extruder; ///< only used for UI purposes
 
     pos3d resume_position;

Firmware/mmu2/check-pce.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-# download Prusa Error Codes for MMU
+# download Prusa Error Codes for MMU 
 #wget https://raw.githubusercontent.com/3d-gussner/Prusa-Error-Codes/master/04_MMU/error-codes.yaml --output-document=error-codes.yaml
 wget https://raw.githubusercontent.com/prusa3d/Prusa-Error-Codes/master/04_MMU/error-codes.yaml --output-document=error-codes.yaml
 

Firmware/mmu2/errors_list.h

@@ -124,10 +124,10 @@ static const constexpr uint16_t errorCodes[] PROGMEM = {
     ERR_ELECTRICAL_MMU_MCU_ERROR,
     ERR_CONNECT_MMU_NOT_RESPONDING,
     ERR_CONNECT_COMMUNICATION_ERROR,
-    ERR_SYSTEM_FILAMENT_ALREADY_LOADED,
-    ERR_SYSTEM_INVALID_TOOL,
-    ERR_SYSTEM_QUEUE_FULL,
-    ERR_SYSTEM_FW_UPDATE_NEEDED,
+    ERR_SYSTEM_FILAMENT_ALREADY_LOADED, 
+    ERR_SYSTEM_INVALID_TOOL, 
+    ERR_SYSTEM_QUEUE_FULL, 
+    ERR_SYSTEM_FW_UPDATE_NEEDED, 
     ERR_SYSTEM_FW_RUNTIME_ERROR,
     ERR_SYSTEM_UNLOAD_MANUALLY,
     ERR_SYSTEM_FILAMENT_EJECTED,
@@ -287,7 +287,7 @@ static const char MSG_DESC_FILAMENT_CHANGE[] PROGMEM_I1 = ISTR("M600 Filament Ch
 static const char MSG_DESC_UNKNOWN_ERROR[] PROGMEM_I1    = ISTR("Unexpected error occurred."); ////MSG_DESC_UNKNOWN_ERROR c=20 r=8
 
 // Read explanation in mmu2_protocol_logic.cpp -> supportedMmuFWVersion
-static constexpr char MSG_DESC_FW_UPDATE_NEEDED[] PROGMEM_I1 = ISTR("MMU FW version is incompatible with printer FW.Update to version 3.0.3."); ////MSG_DESC_FW_UPDATE_NEEDED c=20 r=8
+static constexpr char MSG_DESC_FW_UPDATE_NEEDED[] PROGMEM_I1 = ISTR("MMU FW version is incompatible with printer FW.Update to version 3.0.1."); ////MSG_DESC_FW_UPDATE_NEEDED c=20 r=8
 static constexpr uint8_t szFWUN = sizeof(MSG_DESC_FW_UPDATE_NEEDED);
 // at least check the individual version characters in MSG_DESC_FW_UPDATE_NEEDED
 static_assert(MSG_DESC_FW_UPDATE_NEEDED[szFWUN - 7] == ('0' + mmuVersionMajor));
@@ -355,7 +355,7 @@ static const char MSG_BTN_RETRY[] PROGMEM_I1 = ISTR("Retry"); ////MSG_BTN_RETRY
 static const char MSG_BTN_RESET_MMU[] PROGMEM_I1 = ISTR("ResetMMU"); ////MSG_BTN_RESET_MMU c=8
 static const char MSG_BTN_UNLOAD[] PROGMEM_I1 = ISTR("Unload"); ////MSG_BTN_UNLOAD c=8
 static const char MSG_BTN_LOAD[] PROGMEM_I1 = ISTR("Load"); ////MSG_BTN_LOAD c=8
-//static const char MSG_BTN_EJECT[] PROGMEM_I1 = ISTR("Eject"); //Reuse MSG_EJECT c=9
+static const char MSG_BTN_EJECT[] PROGMEM_I1 = ISTR("Eject"); ////MSG_BTN_EJECT c=8
 //static const char MSG_BTN_TUNE_MMU[] PROGMEM_I1 = ISTR("Tune"); //Reuse MSG_TUNE c=8
 static const char MSG_BTN_STOP[] PROGMEM_I1 = ISTR("Stop"); ////MSG_BTN_STOP c=8
 static const char MSG_BTN_DISABLE_MMU[] PROGMEM_I1 = ISTR("Disable"); ////MSG_BTN_DISABLE_MMU c=8
@@ -368,7 +368,7 @@ static const char * const btnOperation[] PROGMEM = {
     _R(MSG_BTN_RESET_MMU),
     _R(MSG_BTN_UNLOAD),
     _R(MSG_BTN_LOAD),
-    _R(MSG_EJECT),
+    _R(MSG_BTN_EJECT),
     _R(MSG_TUNE),
     _R(MSG_BTN_STOP),
     _R(MSG_BTN_DISABLE_MMU),

Firmware/mmu2_error_converter.cpp

@@ -29,17 +29,17 @@ static constexpr uint8_t FindErrorIndex(uint16_t pec) {
     return (i != errorCodesEnd) ? (i-errorCodes) : (errorCodesSize - 1);
 }
 
-// check that the searching algorithm works
-static_assert(FindErrorIndex(ERR_MECHANICAL_FINDA_DIDNT_TRIGGER) == 0);
-static_assert(FindErrorIndex(ERR_MECHANICAL_FINDA_FILAMENT_STUCK) == 1);
-static_assert(FindErrorIndex(ERR_MECHANICAL_FSENSOR_DIDNT_TRIGGER) == 2);
-static_assert(FindErrorIndex(ERR_MECHANICAL_FSENSOR_FILAMENT_STUCK) == 3);
+// check that the searching algoritm works
+static_assert( FindErrorIndex(ERR_MECHANICAL_FINDA_DIDNT_TRIGGER) == 0);
+static_assert( FindErrorIndex(ERR_MECHANICAL_FINDA_FILAMENT_STUCK) == 1);
+static_assert( FindErrorIndex(ERR_MECHANICAL_FSENSOR_DIDNT_TRIGGER) == 2);
+static_assert( FindErrorIndex(ERR_MECHANICAL_FSENSOR_FILAMENT_STUCK) == 3);
 
-constexpr ErrorCode operator&(ErrorCode a, ErrorCode b) {
+constexpr ErrorCode operator&(ErrorCode a, ErrorCode b){
     return (ErrorCode)((uint16_t)a & (uint16_t)b);
 }
 
-constexpr bool ContainsBit(ErrorCode ec, ErrorCode mask) {
+constexpr bool ContainsBit(ErrorCode ec, ErrorCode mask){
     return (uint16_t)ec & (uint16_t)mask;
 }
 
@@ -67,17 +67,17 @@ uint8_t PrusaErrorCodeIndex(ErrorCode ec) {
     case ErrorCode::STALLED_PULLEY:
     case ErrorCode::MOVE_PULLEY_FAILED:
         return FindErrorIndex(ERR_MECHANICAL_PULLEY_CANNOT_MOVE);
-
+        
     case ErrorCode::HOMING_SELECTOR_FAILED:
         return FindErrorIndex(ERR_MECHANICAL_SELECTOR_CANNOT_HOME);
     case ErrorCode::MOVE_SELECTOR_FAILED:
         return FindErrorIndex(ERR_MECHANICAL_SELECTOR_CANNOT_MOVE);
-
+        
     case ErrorCode::HOMING_IDLER_FAILED:
         return FindErrorIndex(ERR_MECHANICAL_IDLER_CANNOT_HOME);
     case ErrorCode::MOVE_IDLER_FAILED:
         return FindErrorIndex(ERR_MECHANICAL_IDLER_CANNOT_MOVE);
-
+        
     case ErrorCode::MMU_NOT_RESPONDING:
         return FindErrorIndex(ERR_CONNECT_MMU_NOT_RESPONDING);
     case ErrorCode::PROTOCOL_ERROR:
@@ -96,115 +96,93 @@ uint8_t PrusaErrorCodeIndex(ErrorCode ec) {
         return FindErrorIndex(ERR_SYSTEM_UNLOAD_MANUALLY);
     case ErrorCode::MCU_UNDERVOLTAGE_VCC:
         return FindErrorIndex(ERR_ELECTRICAL_MMU_MCU_ERROR);
-    default:
-        break;
+    default: break;
     }
-
+    
     // Electrical issues which can be detected somehow.
     // Need to be placed before TMC-related errors in order to process couples of error bits between single ones
     // and to keep the code size down.
     if (ContainsBit(ec, ErrorCode::TMC_PULLEY_BIT)) {
-        if ((ec & ErrorCode::MMU_SOLDERING_NEEDS_ATTENTION) == ErrorCode::MMU_SOLDERING_NEEDS_ATTENTION) {
+        if ((ec & ErrorCode::MMU_SOLDERING_NEEDS_ATTENTION) == ErrorCode::MMU_SOLDERING_NEEDS_ATTENTION)
             return FindErrorIndex(ERR_ELECTRICAL_MMU_PULLEY_SELFTEST_FAILED);
-        }
     } else if (ContainsBit(ec, ErrorCode::TMC_SELECTOR_BIT)) {
-        if ((ec & ErrorCode::MMU_SOLDERING_NEEDS_ATTENTION) == ErrorCode::MMU_SOLDERING_NEEDS_ATTENTION) {
+        if ((ec & ErrorCode::MMU_SOLDERING_NEEDS_ATTENTION) == ErrorCode::MMU_SOLDERING_NEEDS_ATTENTION)
             return FindErrorIndex(ERR_ELECTRICAL_MMU_SELECTOR_SELFTEST_FAILED);
-        }
     } else if (ContainsBit(ec, ErrorCode::TMC_IDLER_BIT)) {
-        if ((ec & ErrorCode::MMU_SOLDERING_NEEDS_ATTENTION) == ErrorCode::MMU_SOLDERING_NEEDS_ATTENTION) {
+        if ((ec & ErrorCode::MMU_SOLDERING_NEEDS_ATTENTION) == ErrorCode::MMU_SOLDERING_NEEDS_ATTENTION)
             return FindErrorIndex(ERR_ELECTRICAL_MMU_IDLER_SELFTEST_FAILED);
-        }
     }
 
     // TMC-related errors - multiple of these can occur at once
     // - in such a case we report the first which gets found/converted into Prusa-Error-Codes (usually the fact, that one TMC has an issue is serious enough)
     // By carefully ordering the checks here we can prioritize the errors being reported to the user.
     if (ContainsBit(ec, ErrorCode::TMC_PULLEY_BIT)) {
-        if (ContainsBit(ec, ErrorCode::TMC_IOIN_MISMATCH)) {
+        if (ContainsBit(ec, ErrorCode::TMC_IOIN_MISMATCH))
             return FindErrorIndex(ERR_ELECTRICAL_TMC_PULLEY_DRIVER_ERROR);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_RESET)) {
+        if (ContainsBit(ec, ErrorCode::TMC_RESET))
             return FindErrorIndex(ERR_ELECTRICAL_TMC_PULLEY_DRIVER_RESET);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_UNDERVOLTAGE_ON_CHARGE_PUMP)) {
+        if (ContainsBit(ec, ErrorCode::TMC_UNDERVOLTAGE_ON_CHARGE_PUMP))
             return FindErrorIndex(ERR_ELECTRICAL_TMC_PULLEY_UNDERVOLTAGE_ERROR);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_SHORT_TO_GROUND)) {
+        if (ContainsBit(ec, ErrorCode::TMC_SHORT_TO_GROUND))
             return FindErrorIndex(ERR_ELECTRICAL_TMC_PULLEY_DRIVER_SHORTED);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_OVER_TEMPERATURE_WARN)) {
+        if (ContainsBit(ec, ErrorCode::TMC_OVER_TEMPERATURE_WARN))
             return FindErrorIndex(ERR_TEMPERATURE_WARNING_TMC_PULLEY_TOO_HOT);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_OVER_TEMPERATURE_ERROR)) {
+        if (ContainsBit(ec, ErrorCode::TMC_OVER_TEMPERATURE_ERROR))
             return FindErrorIndex(ERR_TEMPERATURE_TMC_PULLEY_OVERHEAT_ERROR);
-        }
     } else if (ContainsBit(ec, ErrorCode::TMC_SELECTOR_BIT)) {
-        if (ContainsBit(ec, ErrorCode::TMC_IOIN_MISMATCH)) {
+        if (ContainsBit(ec, ErrorCode::TMC_IOIN_MISMATCH))
             return FindErrorIndex(ERR_ELECTRICAL_TMC_SELECTOR_DRIVER_ERROR);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_RESET)) {
+        if (ContainsBit(ec, ErrorCode::TMC_RESET))
             return FindErrorIndex(ERR_ELECTRICAL_TMC_SELECTOR_DRIVER_RESET);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_UNDERVOLTAGE_ON_CHARGE_PUMP)) {
+        if (ContainsBit(ec, ErrorCode::TMC_UNDERVOLTAGE_ON_CHARGE_PUMP))
             return FindErrorIndex(ERR_ELECTRICAL_TMC_SELECTOR_UNDERVOLTAGE_ERROR);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_SHORT_TO_GROUND)) {
+        if (ContainsBit(ec, ErrorCode::TMC_SHORT_TO_GROUND))
             return FindErrorIndex(ERR_ELECTRICAL_TMC_SELECTOR_DRIVER_SHORTED);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_OVER_TEMPERATURE_WARN)) {
+        if (ContainsBit(ec, ErrorCode::TMC_OVER_TEMPERATURE_WARN))
             return FindErrorIndex(ERR_TEMPERATURE_WARNING_TMC_SELECTOR_TOO_HOT);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_OVER_TEMPERATURE_ERROR)) {
+        if (ContainsBit(ec, ErrorCode::TMC_OVER_TEMPERATURE_ERROR))
             return FindErrorIndex(ERR_TEMPERATURE_TMC_SELECTOR_OVERHEAT_ERROR);
-        }
     } else if (ContainsBit(ec, ErrorCode::TMC_IDLER_BIT)) {
-        if (ContainsBit(ec, ErrorCode::TMC_IOIN_MISMATCH)) {
+        if (ContainsBit(ec, ErrorCode::TMC_IOIN_MISMATCH))
             return FindErrorIndex(ERR_ELECTRICAL_TMC_IDLER_DRIVER_ERROR);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_RESET)) {
+        if (ContainsBit(ec, ErrorCode::TMC_RESET))
             return FindErrorIndex(ERR_ELECTRICAL_TMC_IDLER_DRIVER_RESET);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_UNDERVOLTAGE_ON_CHARGE_PUMP)) {
+        if (ContainsBit(ec, ErrorCode::TMC_UNDERVOLTAGE_ON_CHARGE_PUMP))
             return FindErrorIndex(ERR_ELECTRICAL_TMC_IDLER_UNDERVOLTAGE_ERROR);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_SHORT_TO_GROUND)) {
+        if (ContainsBit(ec, ErrorCode::TMC_SHORT_TO_GROUND))
             return FindErrorIndex(ERR_ELECTRICAL_TMC_IDLER_DRIVER_SHORTED);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_OVER_TEMPERATURE_WARN)) {
+        if (ContainsBit(ec, ErrorCode::TMC_OVER_TEMPERATURE_WARN))
             return FindErrorIndex(ERR_TEMPERATURE_WARNING_TMC_IDLER_TOO_HOT);
-        }
-        if (ContainsBit(ec, ErrorCode::TMC_OVER_TEMPERATURE_ERROR)) {
+        if (ContainsBit(ec, ErrorCode::TMC_OVER_TEMPERATURE_ERROR))
             return FindErrorIndex(ERR_TEMPERATURE_TMC_IDLER_OVERHEAT_ERROR);
-        }
     }
 
-    // if nothing got caught, return a generic error
+    // if nothing got caught, return a generic runtime error
     return FindErrorIndex(ERR_OTHER_UNKNOWN_ERROR);
 }
 
-uint16_t PrusaErrorCode(uint8_t i) {
+uint16_t PrusaErrorCode(uint8_t i){
     return pgm_read_word(errorCodes + i);
 }
 
-const char *PrusaErrorTitle(uint8_t i) {
+const char * PrusaErrorTitle(uint8_t i){
     return (const char *)pgm_read_ptr(errorTitles + i);
 }
 
-const char *PrusaErrorDesc(uint8_t i) {
+const char * PrusaErrorDesc(uint8_t i){
     return (const char *)pgm_read_ptr(errorDescs + i);
 }
 
-uint8_t PrusaErrorButtons(uint8_t i) {
+uint8_t PrusaErrorButtons(uint8_t i){
     return pgm_read_byte(errorButtons + i);
 }
 
-const char *PrusaErrorButtonTitle(uint8_t bi) {
+const char * PrusaErrorButtonTitle(uint8_t bi){
     // -1 represents the hidden NoOperation button which is not drawn in any way
     return (const char *)pgm_read_ptr(btnOperation + bi - 1);
 }
 
-const char *PrusaErrorButtonMore() {
+const char * PrusaErrorButtonMore(){
     return MSG_BTN_MORE;
 }
 
@@ -215,12 +193,13 @@ Buttons ButtonPressed(ErrorCode ec) {
 
     const auto result = ButtonAvailable(ec);
     buttonSelectedOperation = ButtonOperations::NoOperation; // Reset operation
+
     return result;
 }
 
 Buttons ButtonAvailable(ErrorCode ec) {
     uint8_t ei = PrusaErrorCodeIndex(ec);
-
+    
     // The list of responses which occur in mmu error dialogs
     // Return button index or perform some action on the MK3 by itself (like Reset MMU)
     // Based on Prusa-Error-Codes errors_list.h
@@ -287,23 +266,23 @@ Buttons ButtonAvailable(ErrorCode ec) {
             break;
         }
         break;
-
+        
     case ERR_TEMPERATURE_TMC_PULLEY_OVERHEAT_ERROR:
     case ERR_TEMPERATURE_TMC_SELECTOR_OVERHEAT_ERROR:
     case ERR_TEMPERATURE_TMC_IDLER_OVERHEAT_ERROR:
-
+        
     case ERR_ELECTRICAL_TMC_PULLEY_DRIVER_ERROR:
     case ERR_ELECTRICAL_TMC_SELECTOR_DRIVER_ERROR:
     case ERR_ELECTRICAL_TMC_IDLER_DRIVER_ERROR:
-
+        
     case ERR_ELECTRICAL_TMC_PULLEY_DRIVER_RESET:
     case ERR_ELECTRICAL_TMC_SELECTOR_DRIVER_RESET:
     case ERR_ELECTRICAL_TMC_IDLER_DRIVER_RESET:
-
+        
     case ERR_ELECTRICAL_TMC_PULLEY_UNDERVOLTAGE_ERROR:
     case ERR_ELECTRICAL_TMC_SELECTOR_UNDERVOLTAGE_ERROR:
     case ERR_ELECTRICAL_TMC_IDLER_UNDERVOLTAGE_ERROR:
-
+        
     case ERR_ELECTRICAL_TMC_PULLEY_DRIVER_SHORTED:
     case ERR_ELECTRICAL_TMC_SELECTOR_DRIVER_SHORTED:
     case ERR_ELECTRICAL_TMC_IDLER_DRIVER_SHORTED:
@@ -344,7 +323,7 @@ Buttons ButtonAvailable(ErrorCode ec) {
             break;
         }
         break;
-
+        
     case ERR_SYSTEM_INVALID_TOOL:
         switch (buttonSelectedOperation) {
         case ButtonOperations::StopPrint: // "Stop print"
@@ -359,11 +338,11 @@ Buttons ButtonAvailable(ErrorCode ec) {
     default:
         break;
     }
-
+    
     return Buttons::NoButton;
 }
 
-void SetButtonResponse(ButtonOperations rsp) {
+void SetButtonResponse(ButtonOperations rsp){
     buttonSelectedOperation = rsp;
 }
 

Firmware/mmu2_error_converter.h

@@ -6,7 +6,7 @@
     #include "mmu2/error_codes.h"
 #else
     #include "buttons.h"
-    #include "../../../../../../Prusa-Error-Codes/include/button_operations.h"
+    #include "../../../../../../Prusa-Error-Codes/04_MMU/button_operations.h"
     #include "../../../../../../Prusa-Firmware-MMU/src/logic/error_codes.h"
 #endif
 

Firmware/mmu2_log.h

@@ -55,7 +55,7 @@ void LogEchoEvent_P(const char *msg_P);
         } while (0)
     #define MMU2_ERROR_MSG(S) MMU2_ECHO_MSG(S) //!@todo Decide MMU errors  on serial line
 
-#else // #ifndef UNITTEST
+#else                                          // #ifndef UNITTEST
     #include "stubs/stub_interfaces.h"
     #define MMU2_ECHO_MSGLN(S)    marlinLogSim.AppendLine(S)
     #define MMU2_ERROR_MSGLN(S)   marlinLogSim.AppendLine(S)
@@ -65,4 +65,4 @@ void LogEchoEvent_P(const char *msg_P);
     #define SERIAL_ECHOPGM(S)     /* */
     #define SERIAL_ECHOLN(S)      /*marlinLogSim.AppendLine(S)*/
 
-#endif // #ifndef UNITTEST
+#endif                            // #ifndef UNITTEST

Firmware/mmu2_marlin.h

@@ -28,7 +28,6 @@ void extruder_schedule_turning(float feed_rate);
 float move_raise_z(float delta);
 
 void planner_abort_queued_moves();
-bool planner_draining();
 void planner_synchronize();
 bool planner_any_moves();
 float stepper_get_machine_position_E_mm();
@@ -43,8 +42,8 @@ void nozzle_park();
 
 bool marlin_printingIsActive();
 void marlin_manage_heater();
-void marlin_manage_inactivity(bool ignore_stepper_queue);
-void marlin_idle(bool ignore_stepper_queue);
+void marlin_manage_inactivity(bool b);
+void marlin_idle(bool b);
 void marlin_refresh_print_state_in_ram();
 void marlin_clear_print_state_in_ram();
 void marlin_stop_and_save_print_to_ram();

Firmware/mmu2_marlin1.cpp

@@ -38,10 +38,6 @@ void planner_abort_queued_moves() {
     planner_aborted = false;
 }
 
-bool planner_draining() {
-    return planner_aborted;
-}
-
 void planner_synchronize() {
     st_synchronize();
 }
@@ -50,33 +46,33 @@ bool planner_any_moves() {
     return blocks_queued();
 }
 
-float planner_get_machine_position_E_mm() {
+float planner_get_machine_position_E_mm(){
     return current_position[E_AXIS];
 }
 
-float stepper_get_machine_position_E_mm() {
+float stepper_get_machine_position_E_mm(){
     return st_get_position_mm(E_AXIS);
 }
 
-float planner_get_current_position_E() {
+float planner_get_current_position_E(){
     return current_position[E_AXIS];
 }
 
-void planner_set_current_position_E(float e) {
+void planner_set_current_position_E(float e){
         current_position[E_AXIS] = e;
 }
 
-pos3d planner_current_position() {
+pos3d planner_current_position(){
     return pos3d(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS]);
 }
 
-void motion_do_blocking_move_to_xy(float rx, float ry, float feedRate_mm_s) {
+void motion_do_blocking_move_to_xy(float rx, float ry, float feedRate_mm_s){
     current_position[X_AXIS] = rx;
     current_position[Y_AXIS] = ry;
     planner_line_to_current_position_sync(feedRate_mm_s);
 }
 
-void motion_do_blocking_move_to_z(float z, float feedRate_mm_s) {
+void motion_do_blocking_move_to_z(float z, float feedRate_mm_s){
     current_position[Z_AXIS] = z;
     planner_line_to_current_position_sync(feedRate_mm_s);
 }
@@ -88,31 +84,32 @@ void nozzle_park() {
 }
 
 bool marlin_printingIsActive() {
+    // return IS_SD_PRINTING || usb_timer_running();
     return printer_active();
 }
 
-void marlin_manage_heater() {
+void marlin_manage_heater(){
     manage_heater();
 }
 
-void marlin_manage_inactivity(bool ignore_stepper_queue) {
-    manage_inactivity(ignore_stepper_queue);
+void marlin_manage_inactivity(bool b){
+    manage_inactivity(b);
 }
 
-void marlin_idle(bool ignore_stepper_queue) {
+void marlin_idle(bool b){
     manage_heater();
-    manage_inactivity(ignore_stepper_queue);
+    manage_inactivity(b);
 }
 
-void marlin_refresh_print_state_in_ram() {
+void marlin_refresh_print_state_in_ram(){
     refresh_print_state_in_ram();
 }
 
-void marlin_clear_print_state_in_ram() {
+void marlin_clear_print_state_in_ram(){
     clear_print_state_in_ram();
 }
 
-void marlin_stop_and_save_print_to_ram() {
+void marlin_stop_and_save_print_to_ram(){
     stop_and_save_print_to_ram(0,0);
 }
 
@@ -136,15 +133,10 @@ void safe_delay_keep_alive(uint16_t t) {
     delay_keep_alive(t);
 }
 
-void Enable_E0() {
-    enable_e0();
-}
+void Enable_E0(){ enable_e0(); }
+void Disable_E0(){ disable_e0(); }
 
-void Disable_E0() {
-    disable_e0();
-}
-
-bool all_axes_homed() {
+bool all_axes_homed(){
     return axis_known_position[X_AXIS] && axis_known_position[Y_AXIS];
 }
 

Firmware/mmu2_progress_converter.cpp

@@ -30,7 +30,7 @@ static const char MSG_PROGRESS_HOMING[] PROGMEM_I1           = ISTR("Homing"); /
 static const char MSG_PROGRESS_MOVING_SELECTOR[] PROGMEM_I1  = ISTR("Moving selector"); ////MSG_PROGRESS_MOVING_SELECTOR c=20
 static const char MSG_PROGRESS_FEED_FSENSOR[] PROGMEM_I1     = ISTR("Feeding to FSensor"); ////MSG_PROGRESS_FEED_FSENSOR c=20
 
-static const char *const progressTexts[] PROGMEM = {
+static const char * const progressTexts[] PROGMEM = {
     _R(MSG_PROGRESS_OK),
     _R(MSG_PROGRESS_ENGAGE_IDLER),
     _R(MSG_PROGRESS_DISENGAGE_IDLER),
@@ -62,11 +62,11 @@ static const char *const progressTexts[] PROGMEM = {
     _R(MSG_PROGRESS_FEED_FSENSOR)
 };
 
-const char *ProgressCodeToText(ProgressCode pc) {
+const char * ProgressCodeToText(ProgressCode pc){
     // @@TODO ?? a better fallback option?
-    return ((uint16_t)pc <= (sizeof(progressTexts) / sizeof(progressTexts[0])))
-        ? static_cast<const char *>(pgm_read_ptr(&progressTexts[(uint16_t)pc]))
-        : static_cast<const char *>(pgm_read_ptr(&progressTexts[0]));
+    return ( (uint16_t)pc <= (sizeof(progressTexts) / sizeof(progressTexts[0])) )
+       ? static_cast<const char *>(pgm_read_ptr(&progressTexts[(uint16_t)pc]))
+       : static_cast<const char *>(pgm_read_ptr(&progressTexts[0]));
 }
 
 } // namespace MMU2

Firmware/mmu2_protocol.cpp

@@ -1,4 +1,4 @@
-/// @file mmu2_protocol.cpp
+/// @file
 #include "mmu2_protocol.h"
 
 // protocol definition
@@ -112,8 +112,11 @@ DecodeStatus Protocol::DecodeRequest(uint8_t c) {
                 rqState = RequestStates::Code;
                 return DecodeStatus::MessageCompleted;
             }
+        } else {
+            requestMsg.code = RequestMsgCodes::unknown;
+            rqState = RequestStates::Error;
+            return DecodeStatus::Error;
         }
-        [[fallthrough]];
     default: //case error:
         if (IsNewLine(c)) {
             rqState = RequestStates::Code;

Firmware/mmu2_protocol.h

@@ -1,4 +1,4 @@
-/// @file mmu2_protocol.h
+/// @file protocol.h
 #pragma once
 #include <stdint.h>
 #include "mmu2_crc.h"
@@ -8,7 +8,6 @@ namespace modules {
 /// @brief The MMU communication protocol implementation and related stuff.
 ///
 /// See description of the new protocol in the MMU 2021 doc
-
 namespace protocol {
 
 /// Definition of request message codes
@@ -180,9 +179,17 @@ public:
     /// @returns number of bytes written into txbuff
     static uint8_t EncodeResponseReadFINDA(const RequestMsg &msg, uint8_t findaValue, uint8_t *txbuff);
 
+
+
+
+
+
+
+
     /// Encode response to Query operation status
     /// @param msg source request message for this response
-    /// @param rcs status of operation (Processing, Error, Finished)
+    /// @param code status of operation (Processing, Error, Finished)
+    /// @param value related to status of operation(e.g. error code or progress)
     /// @param txbuff where to format the message
     /// @returns number of bytes written into txbuff
     static uint8_t EncodeResponseQueryOperation(const RequestMsg &msg, ResponseCommandStatus rcs, uint8_t *txbuff);

Firmware/mmu2_protocol_logic.cpp

@@ -6,7 +6,7 @@
     // on MK3/S/+ we shuffle the timers a bit, thus "_millis" may not equal "millis"
     #include "system_timer.h"
 #else
-// irrelevant on Buddy FW, just keep "_millis" as "millis"
+    // irrelevant on Buddy FW, just keep "_millis" as "millis"
     #include <wiring_time.h>
     #define _millis millis
     #ifdef UNITTEST
@@ -32,18 +32,18 @@ namespace MMU2 {
 static constexpr uint8_t supportedMmuFWVersion[3] PROGMEM = { mmuVersionMajor, mmuVersionMinor, mmuVersionPatch };
 
 const Register ProtocolLogic::regs8Addrs[ProtocolLogic::regs8Count] PROGMEM = {
-    Register::FINDA_State, // FINDA state
+    Register::FINDA_State,           // FINDA state
     Register::Set_Get_Selector_Slot, // Selector slot
-    Register::Set_Get_Idler_Slot, // Idler slot
+    Register::Set_Get_Idler_Slot,    // Idler slot
 };
 
 const Register ProtocolLogic::regs16Addrs[ProtocolLogic::regs16Count] PROGMEM = {
-    Register::MMU_Errors, // MMU errors - aka statistics
+    Register::MMU_Errors,          // MMU errors - aka statistics
     Register::Get_Pulley_Position, // Pulley position [mm]
 };
 
 const Register ProtocolLogic::initRegs8Addrs[ProtocolLogic::initRegs8Count] PROGMEM = {
-    Register::Extra_Load_Distance, // extra load distance [mm]
+    Register::Extra_Load_Distance,  // extra load distance [mm]
     Register::Pulley_Slow_Feedrate, // pulley slow feedrate [mm/s]
 };
 
@@ -186,7 +186,7 @@ StepStatus ProtocolLogic::ExpectingMessage() {
                 break;
             }
         }
-            [[fallthrough]]; // otherwise
+            [[fallthrough]];      // otherwise
         default:
             RecordUARTActivity(); // something has happened on the UART, update the timeout record
             return ProtocolError;
@@ -194,7 +194,7 @@ StepStatus ProtocolLogic::ExpectingMessage() {
     }
     if (bytesConsumed != 0) {
         RecordUARTActivity(); // something has happened on the UART, update the timeout record
-        return Processing; // consumed some bytes, but message still not ready
+        return Processing;    // consumed some bytes, but message still not ready
     } else if (Elapsed(linkLayerTimeout) && currentScope != Scope::Stopped) {
         return CommunicationTimeout;
     }
@@ -267,8 +267,6 @@ StepStatus ProtocolLogic::ScopeStep() {
     if (!ExpectsResponse()) {
         // we are waiting for something
         switch (currentScope) {
-        case Scope::StartSeq:
-            return Processing;
         case Scope::DelayedRestart:
             return DelayedRestartWait();
         case Scope::Idle:
@@ -282,18 +280,17 @@ StepStatus ProtocolLogic::ScopeStep() {
         }
     } else {
         // we are expecting a message
-        if (auto expmsg = ExpectingMessage(); expmsg != MessageReady) { // this whole statement takes 12B
+        if (auto expmsg = ExpectingMessage(); expmsg != MessageReady) // this whole statement takes 12B
             return expmsg;
-        }
 
         // process message
         switch (currentScope) {
         case Scope::StartSeq:
             return StartSeqStep(); // ~270B
         case Scope::Idle:
-            return IdleStep(); // ~300B
+            return IdleStep();     // ~300B
         case Scope::Command:
-            return CommandStep(); // ~430B
+            return CommandStep();  // ~430B
         case Scope::Stopped:
             return StoppedStep();
         default:
@@ -338,7 +335,7 @@ StepStatus ProtocolLogic::StartSeqStep() {
 StepStatus ProtocolLogic::DelayedRestartWait() {
     if (Elapsed(heartBeatPeriod)) { // this basically means, that we are waiting until there is some traffic on
         while (uart->read() != -1)
-            ; // clear the input buffer
+            ;                       // clear the input buffer
         // switch to StartSeq
         Start();
     }
@@ -726,13 +723,12 @@ void ProtocolLogic::FormatLastResponseMsgAndClearLRB(char *dst) {
     for (uint8_t i = 0; i < lrb; ++i) {
         uint8_t b = lastReceivedBytes[i];
         // Check for printable character, including space
-        if (b < 32 || b > 127) {
+        if (b < 32 || b > 127)
             b = '.';
-        }
         *dst++ = b;
     }
     *dst = 0; // terminate properly
-    lrb = 0; // reset the input buffer index in case of a clean message
+    lrb = 0;  // reset the input buffer index in case of a clean message
 }
 
 void ProtocolLogic::LogRequestMsg(const uint8_t *txbuff, uint8_t size) {
@@ -742,9 +738,8 @@ void ProtocolLogic::LogRequestMsg(const uint8_t *txbuff, uint8_t size) {
     for (uint8_t i = 0; i < size; ++i) {
         uint8_t b = txbuff[i];
         // Check for printable character, including space
-        if (b < 32 || b > 127) {
+        if (b < 32 || b > 127)
             b = '.';
-        }
         tmp[i + 1] = b;
     }
     tmp[size + 1] = 0;
@@ -814,11 +809,14 @@ StepStatus ProtocolLogic::Step() {
         // We are ok, switching to Idle if there is no potential next request planned.
         // But the trouble is we must report a finished command if the previous command has just been finished
         // i.e. only try to find some planned command if we just finished the Idle cycle
-        if (!ActivatePlannedRequest()) { // if nothing is planned, switch to Idle
+        bool previousCommandFinished = currentScope == Scope::Command; // @@TODO this is a nasty hack :(
+        if (!ActivatePlannedRequest()) {                               // if nothing is planned, switch to Idle
             SwitchToIdle();
-        } else if (ExpectsResponse()) {
+        } else {
             // if the previous cycle was Idle and now we have planned a new command -> avoid returning Finished
-            currentStatus = Processing;
+            if (!previousCommandFinished && currentScope == Scope::Command) {
+                currentStatus = Processing;
+            }
         }
     } break;
     case CommandRejected:
@@ -850,9 +848,8 @@ StepStatus ProtocolLogic::Step() {
 }
 
 uint8_t ProtocolLogic::CommandInProgress() const {
-    if (currentScope != Scope::Command) {
+    if (currentScope != Scope::Command)
         return 0;
-    }
     return (uint8_t)ReqMsg().code;
 }
 
@@ -868,7 +865,7 @@ void ProtocolLogic::ResetRetryAttempts() {
     retryAttempts = MAX_RETRIES;
 }
 
-void ProtocolLogic::ResetCommunicationTimeoutAttempts() {
+void __attribute__((noinline)) ProtocolLogic::ResetCommunicationTimeoutAttempts() {
     SERIAL_ECHOLNPGM("RSTCommTimeout");
     dataTO.Reset();
 }

Firmware/mmu2_protocol_logic.h

@@ -52,22 +52,22 @@ class ProtocolLogic;
 /// ProtocolLogic stepping statuses
 enum StepStatus : uint_fast8_t {
     Processing = 0,
-    MessageReady, ///< a message has been successfully decoded from the received bytes
-    Finished, ///< Scope finished successfully
-    Interrupted, ///< received "Finished" message related to a different command than originally issued (most likely the MMU restarted while doing something)
+    MessageReady,         ///< a message has been successfully decoded from the received bytes
+    Finished,             ///< Scope finished successfully
+    Interrupted,          ///< received "Finished" message related to a different command than originally issued (most likely the MMU restarted while doing something)
     CommunicationTimeout, ///< the MMU failed to respond to a request within a specified time frame
-    ProtocolError, ///< bytes read from the MMU didn't form a valid response
-    CommandRejected, ///< the MMU rejected the command due to some other command in progress, may be the user is operating the MMU locally (button commands)
-    CommandError, ///< the command in progress stopped due to unrecoverable error, user interaction required
-    VersionMismatch, ///< the MMU reports its firmware version incompatible with our implementation
-    PrinterError, ///< printer's explicit error - MMU is fine, but the printer was unable to complete the requested operation
+    ProtocolError,        ///< bytes read from the MMU didn't form a valid response
+    CommandRejected,      ///< the MMU rejected the command due to some other command in progress, may be the user is operating the MMU locally (button commands)
+    CommandError,         ///< the command in progress stopped due to unrecoverable error, user interaction required
+    VersionMismatch,      ///< the MMU reports its firmware version incompatible with our implementation
+    PrinterError,         ///< printer's explicit error - MMU is fine, but the printer was unable to complete the requested operation
     CommunicationRecovered,
-    ButtonPushed, ///< The MMU reported the user pushed one of its three buttons.
+    ButtonPushed,         ///< The MMU reported the user pushed one of its three buttons.
 };
 
-inline constexpr uint32_t linkLayerTimeout = 2000; ///< default link layer communication timeout
+inline constexpr uint32_t linkLayerTimeout = 2000;                 ///< default link layer communication timeout
 inline constexpr uint32_t dataLayerTimeout = linkLayerTimeout * 3; ///< data layer communication timeout
-inline constexpr uint32_t heartBeatPeriod = linkLayerTimeout / 2; ///< period of heart beat messages (Q0)
+inline constexpr uint32_t heartBeatPeriod = linkLayerTimeout / 2;  ///< period of heart beat messages (Q0)
 
 static_assert(heartBeatPeriod < linkLayerTimeout && linkLayerTimeout < dataLayerTimeout, "Incorrect ordering of timeouts");
 
@@ -229,9 +229,9 @@ private:
     ErrorCode explicitPrinterError;
 
     enum class State : uint_fast8_t {
-        Stopped, ///< stopped for whatever reason
+        Stopped,      ///< stopped for whatever reason
         InitSequence, ///< initial sequence running
-        Running ///< normal operation - Idle + Command processing
+        Running       ///< normal operation - Idle + Command processing
     };
 
     enum class Scope : uint_fast8_t {
@@ -347,25 +347,25 @@ private:
     /// Activate the planned state once the immediate response to a sent request arrived
     bool ActivatePlannedRequest();
 
-    uint32_t lastUARTActivityMs; ///< timestamp - last ms when something occurred on the UART
-    DropOutFilter dataTO; ///< Filter of short consecutive drop outs which are recovered instantly
+    uint32_t lastUARTActivityMs;               ///< timestamp - last ms when something occurred on the UART
+    DropOutFilter dataTO;                      ///< Filter of short consecutive drop outs which are recovered instantly
 
-    ResponseMsg rsp; ///< decoded response message from the MMU protocol
+    ResponseMsg rsp;                           ///< decoded response message from the MMU protocol
 
-    State state; ///< internal state of ProtocolLogic
+    State state;                               ///< internal state of ProtocolLogic
 
-    Protocol protocol; ///< protocol codec
+    Protocol protocol;                         ///< protocol codec
 
     std::array<uint8_t, 16> lastReceivedBytes; ///< remembers the last few bytes of incoming communication for diagnostic purposes
     uint8_t lrb;
 
-    MMU2Serial *uart; ///< UART interface
+    MMU2Serial *uart;          ///< UART interface
 
-    ErrorCode errorCode; ///< last received error code from the MMU
+    ErrorCode errorCode;       ///< last received error code from the MMU
     ProgressCode progressCode; ///< last received progress code from the MMU
-    Buttons buttonCode; ///< Last received button from the MMU.
+    Buttons buttonCode;        ///< Last received button from the MMU.
 
-    uint8_t lastFSensor; ///< last state of filament sensor
+    uint8_t lastFSensor;       ///< last state of filament sensor
 
 #ifndef __AVR__
     uint8_t txbuff[Protocol::MaxRequestSize()]; ///< In Buddy FW - a static transmit buffer needs to exist as DMA cannot be used from CCMRAM.

Firmware/mmu2_reporting.cpp

@@ -11,7 +11,6 @@
 #include "ultralcd.h"
 #include "Filament_sensor.h"
 #include "language.h"
-#include "lcd.h"
 #include "temperature.h"
 #include "sound.h"
 
@@ -158,7 +157,7 @@ static uint8_t ReportErrorHookMonitor(uint8_t ei) {
         //! |                    |
         //! |>(left)             |
         //! ----------------------
-        //! Three choices
+        //! Three choices 
         //! |>(left)>(mid)>(righ)|
         //! ----------------------
         //! Two choices
@@ -237,7 +236,7 @@ bool TuneMenuEntered() {
 
 void ReportErrorHook(CommandInProgress /*cip*/, ErrorCode ec, uint8_t /*es*/) {
     if (putErrorScreenToSleep) return;
-
+    
     if (mmu2.MMUCurrentErrorCode() == ErrorCode::OK && mmu2.MMULastErrorSource() == MMU2::ErrorSourceMMU) {
         // If the error code suddenly changes to OK, that means
         // a button was pushed on the MMU and the LCD should
@@ -347,7 +346,7 @@ void TryLoadUnloadReporter::DumpToSerial(){
 
 /// Disables MMU in EEPROM
 void DisableMMUInSettings() {
-    eeprom_update_byte_notify((uint8_t *)EEPROM_MMU_ENABLED, false);
+    eeprom_update_byte((uint8_t *)EEPROM_MMU_ENABLED, false);
     mmu2.Status();
 }
 
@@ -394,7 +393,7 @@ void FullScreenMsgLoad(uint8_t slot){
 }
 
 void FullScreenMsgRestoringTemperature(){
-    lcd_display_message_fullscreen_P(_T(MSG_MMU_RESTORE_TEMP));
+    lcd_display_message_fullscreen_P(_i("MMU Retry: Restoring temperature...")); ////MSG_MMU_RESTORE_TEMP c=20 r=4
 }
 
 void ScreenUpdateEnable(){
@@ -456,7 +455,7 @@ void tuneIdlerStallguardThresholdMenu() {
     );
     MENU_ITEM_BACK_P(_T(MSG_DONE));
     MENU_ITEM_EDIT_int3_P(
-        _T(MSG_MMU_SENSITIVITY),
+        _i("Sensitivity"), ////MSG_MMU_SENSITIVITY c=18
         &_md->currentValue,
         _md->item.minValue,
         _md->item.maxValue
@@ -465,15 +464,6 @@ void tuneIdlerStallguardThresholdMenu() {
 }
 
 void tuneIdlerStallguardThreshold() {
-    if ((CommandInProgress)mmu2.GetCommandInProgress() != NoCommand)
-    {
-        // Workaround to mitigate an issue where the Tune menu doesn't
-        // work if the MMU is running a command. For example the Idler
-        // homing fails during toolchange.
-        // To save the print, make the Tune button unresponsive for now.
-        return;
-    }
-
     putErrorScreenToSleep = true;
     menu_submenu(tuneIdlerStallguardThresholdMenu);
 }

Firmware/mmu2_state.h

@@ -13,12 +13,9 @@ namespace MMU2 {
 /// When the printer's FW starts, the MMU mode is either Stopped or NotResponding (based on user's preference).
 /// When the MMU successfully establishes communication, the state changes to Active.
 enum class xState : uint_fast8_t {
-    /// The user doesn't want the printer to work with the MMU. The MMU itself is not powered and does not work at all.
-    /// !!! Must be 0 !!! marlin_vars.mmu2_state is set to 0 if not active
-    Stopped,
-
-    Active, ///< MMU has been detected, connected, communicates and is ready to be worked with.
+    Active,     ///< MMU has been detected, connected, communicates and is ready to be worked with.
     Connecting, ///< MMU is connected but it doesn't communicate (yet). The user wants the MMU, but it is not ready to be worked with.
+    Stopped     ///< The user doesn't want the printer to work with the MMU. The MMU itself is not powered and does not work at all.
 };
 
 } // namespace MMU2

Firmware/mmu2_supported_version.h

@@ -5,6 +5,6 @@ namespace MMU2 {
 
 static constexpr uint8_t mmuVersionMajor = 3;
 static constexpr uint8_t mmuVersionMinor = 0;
-static constexpr uint8_t mmuVersionPatch = 3;
+static constexpr uint8_t mmuVersionPatch = 1;
 
 } // namespace MMU2

Firmware/motion_control.cpp

@@ -24,13 +24,13 @@
 #include "stepper.h"
 #include "planner.h"
 
-// The arc is approximated by generating a huge number of tiny, linear segments. The length of each
-// segment is configured in settings.mm_per_arc_segment.
+// The arc is approximated by generating a huge number of tiny, linear segments. The length of each 
+// segment is configured in settings.mm_per_arc_segment.  
 void mc_arc(const float* position, float* target, const float* offset, float feed_rate, float radius, bool isclockwise, uint16_t start_segment_idx)
 {
     float start_position[4];
     memcpy(start_position, position, sizeof(start_position));
-
+    
     float r_axis_x = -offset[X_AXIS];  // Radius vector from center to current location
     float r_axis_y = -offset[Y_AXIS];
     float center_axis_x = start_position[X_AXIS] - r_axis_x;
@@ -56,7 +56,7 @@ void mc_arc(const float* position, float* target, const float* offset, float fee
     if (cs.arc_segments_per_sec > 0)
     {
         // 20200417 - FormerLurker - Implement MIN_ARC_SEGMENTS if it is defined - from Marlin 2.0 implementation
-        float mm_per_arc_segment_sec = feed_rate / (60.f * float(cs.arc_segments_per_sec));
+        float mm_per_arc_segment_sec = (feed_rate / 60.0f) * (1.0f / cs.arc_segments_per_sec);
         if (mm_per_arc_segment_sec < mm_per_arc_segment)
             mm_per_arc_segment = mm_per_arc_segment_sec;
     }
@@ -89,7 +89,7 @@ void mc_arc(const float* position, float* target, const float* offset, float fee
     // calculating here
     const float millimeters_of_travel_arc = hypot(angular_travel_total * radius, fabs(travel_z));
     if (millimeters_of_travel_arc < 0.001) { return; }
-
+    
     // Calculate the number of arc segments
     unsigned short segments = static_cast<unsigned short>(ceil(millimeters_of_travel_arc / mm_per_arc_segment));
 

Firmware/motion_control.h

@@ -4,7 +4,7 @@
 
   Copyright (c) 2009-2011 Simen Svale Skogsrud
   Copyright (c) 2011 Sungeun K. Jeon
-
+  
   Grbl is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
@@ -22,7 +22,7 @@
 #ifndef motion_control_h
 #define motion_control_h
 
-// Execute an arc in offset mode format. position == current xyz, target == target xyz,
+// Execute an arc in offset mode format. position == current xyz, target == target xyz, 
 // offset == offset from current xyz, axis_XXX defines circle plane in tool space, axis_linear is
 // the direction of helical travel, radius == circle radius, isclockwise boolean. Used
 // for vector transformation direction.

Firmware/optiboot_xflash.cpp

@@ -13,7 +13,7 @@
 #define OPTIBOOT_MAJVER 6
 #define OPTIBOOT_CUSTOMVER 0
 #define OPTIBOOT_MINVER 2
-static unsigned const int __attribute__((section(".version")))
+static unsigned const int __attribute__((section(".version"))) 
   optiboot_version = 256*(OPTIBOOT_MAJVER + OPTIBOOT_CUSTOMVER) + OPTIBOOT_MINVER;
 
 #if 0

Firmware/pat9125.cpp

@@ -54,7 +54,7 @@ const PROGMEM uint8_t pat9125_init_bank0[] = {
 	PAT9125_RES_Y, PAT9125_YRES,
 	// Set data format and sensor orientation.
 	PAT9125_ORIENTATION, ((PAT9125_12B_RES?0x04:0) | (PAT9125_INVERT_X?0x08:0) | (PAT9125_INVERT_Y?0x10:0) | (PAT9125_SWAP_XY?0x20:0)),
-
+	
 	// Now continues the magic sequence from the PAT912EL Application Note: Firmware Guides for Tracking Optimization.
 	0x5e, 0x08,
 	0x20, 0x64,
@@ -136,22 +136,22 @@ uint8_t pat9125_init(void)
 	pat9125_wr_reg(PAT9125_CONFIG, 0x97);
 	// Wait until the sensor reboots.
 	_delay_ms(1);
-
+	
 	//Write init sequence in bank0. MUST ALREADY BE IN bank0.
 	if (!pat9125_wr_seq(pat9125_init_bank0))
 		return 0;
-
+	
 	_delay_ms(10); // not sure why this is here. But I'll allow it.
-
+	
 	// Switch to bank1, not allowed to perform pat9125_wr_reg_verify on this register.
 	pat9125_wr_reg(PAT9125_BANK_SELECTION, 0x01);
 	//Write init sequence in bank1. MUST ALREADY BE IN bank1.
 	if (!pat9125_wr_seq(pat9125_init_bank1))
 		return 0;
-
+	
 	// Switch to bank0, not allowed to perform pat9125_wr_reg_verify on this register.
 	pat9125_wr_reg(PAT9125_BANK_SELECTION, 0x00);
-
+	
 	// Enable write protect.
 	pat9125_wr_reg(PAT9125_WP, 0x00); //prevents writing to registers over 0x09
 
@@ -161,14 +161,14 @@ uint8_t pat9125_init(void)
 #else //PAT9125_NEW_INIT
 	// Disable write protect.
 	pat9125_wr_reg(PAT9125_WP, 0x5a); //allows writing to all registers
-
+	
 	pat9125_wr_reg(PAT9125_RES_X, PAT9125_XRES);
 	pat9125_wr_reg(PAT9125_RES_Y, PAT9125_YRES);
 	printf_P(PSTR("PAT9125_RES_X=%u\n"), pat9125_rd_reg(PAT9125_RES_X));
 	printf_P(PSTR("PAT9125_RES_Y=%u\n"), pat9125_rd_reg(PAT9125_RES_Y));
-
+	
 	pat9125_wr_reg(PAT9125_ORIENTATION, ((PAT9125_12B_RES?0x04:0) | (PAT9125_INVERT_X?0x08:0) | (PAT9125_INVERT_Y?0x10:0) | (PAT9125_SWAP_XY?0x20:0)));
-
+	
 	// Enable write protect.
 	pat9125_wr_reg(PAT9125_WP, 0x00); //prevents writing to registers over 0x09
 #endif //PAT9125_NEW_INIT

Firmware/pins.h

@@ -3,6 +3,8 @@
 
 #include "boards.h"
 
+#define LARGE_FLASH true
+
 /*****************************************************************
 * Rambo Pin Assignments 1.3
 ******************************************************************/

Firmware/pins_Einsy_1_0.h

@@ -119,7 +119,7 @@
 #define SDCARDDETECT           15
 
 #define TACH_0                 79 // !!! changed from 81 (EINY03)
-#define TACH_1                 80
+#define TACH_1                 80 
 
 #define IR_SENSOR_PIN 62 //idler sensor @PK0 (digital pin 62/A8)
 

Firmware/pins_Rambo_1_0.h

@@ -101,7 +101,7 @@
 
 #define SDCARDDETECT           72
 
-#define IR_SENSOR_PIN 20 //idler sensor
+#define IR_SENSOR_PIN 20 //idler sensor 
 
 // Support for an 8 bit logic analyzer, for example the Saleae.
 // Channels 0-2 are fast, they could generate 2.667Mhz waveform with a software loop.

Firmware/planner.cpp

@@ -1,53 +1,53 @@
 /*
   planner.c - buffers movement commands and manages the acceleration profile plan
  Part of Grbl
-
+ 
  Copyright (c) 2009-2011 Simen Svale Skogsrud
-
+ 
  Grbl is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
-
+ 
  Grbl is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
-
+ 
  You should have received a copy of the GNU General Public License
  along with Grbl.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 /* The ring buffer implementation gleaned from the wiring_serial library by David A. Mellis. */
 
-/*
+/*  
  Reasoning behind the mathematics in this module (in the key of 'Mathematica'):
-
+ 
  s == speed, a == acceleration, t == time, d == distance
-
+ 
  Basic definitions:
-
- Speed[s_, a_, t_] := s + (a*t)
+ 
+ Speed[s_, a_, t_] := s + (a*t) 
  Travel[s_, a_, t_] := Integrate[Speed[s, a, t], t]
-
+ 
  Distance to reach a specific speed with a constant acceleration:
-
+ 
  Solve[{Speed[s, a, t] == m, Travel[s, a, t] == d}, d, t]
  d -> (m^2 - s^2)/(2 a) --> estimate_acceleration_distance()
-
+ 
  Speed after a given distance of travel with constant acceleration:
-
+ 
  Solve[{Speed[s, a, t] == m, Travel[s, a, t] == d}, m, t]
- m -> Sqrt[2 a d + s^2]
-
+ m -> Sqrt[2 a d + s^2]    
+ 
  DestinationSpeed[s_, a_, d_] := Sqrt[2 a d + s^2]
-
+ 
  When to start braking (di) to reach a specified destionation speed (s2) after accelerating
  from initial speed s1 without ever stopping at a plateau:
-
+ 
  Solve[{DestinationSpeed[s1, a, di] == DestinationSpeed[s2, a, d - di]}, di]
  di -> (2 a d - s1^2 + s2^2)/(4 a) --> intersection_distance()
-
+ 
  IntersectionDistance[s1_, s2_, a_, d_] := (2 a d - s1^2 + s2^2)/(4 a)
  */
 
@@ -57,7 +57,6 @@
 #include "temperature.h"
 #include "fancheck.h"
 #include "ultralcd.h"
-#include "lcd.h"
 #include "language.h"
 #include "ConfigurationStore.h"
 
@@ -85,6 +84,15 @@ float* max_feedrate = cs.max_feedrate_normal;
 uint32_t* max_acceleration_mm_per_s2 = cs.max_acceleration_mm_per_s2_normal;
 uint32_t max_acceleration_steps_per_s2[NUM_AXIS];
 
+#ifdef ENABLE_AUTO_BED_LEVELING
+// this holds the required transform to compensate for bed level
+matrix_3x3 plan_bed_level_matrix = {
+	1.0, 0.0, 0.0,
+	0.0, 1.0, 0.0,
+	0.0, 0.0, 1.0,
+};
+#endif // #ifdef ENABLE_AUTO_BED_LEVELING
+
 // The current position of the tool in absolute steps
 long position[NUM_AXIS];   //rescaled from extern when axis_steps_per_mm are changed by gcode
 static float previous_speed[NUM_AXIS]; // Speed of previous path line segment
@@ -106,7 +114,7 @@ volatile uint8_t block_buffer_head;         // Index of the next block to be pus
 volatile uint8_t block_buffer_tail;         // Index of the block to process now
 
 #ifdef PLANNER_DIAGNOSTICS
-// Diagnostic function: Minimum number of planned moves since the last
+// Diagnostic function: Minimum number of planned moves since the last 
 static uint8_t g_cntr_planner_queue_min = 0;
 #endif /* PLANNER_DIAGNOSTICS */
 
@@ -115,7 +123,7 @@ static uint8_t g_cntr_planner_queue_min = 0;
 //===========================================================================
 #ifdef PREVENT_DANGEROUS_EXTRUDE
 int extrude_min_temp = EXTRUDE_MINTEMP;
-#endif //PREVENT_DANGEROUS_EXTRUDE
+#endif
 
 #ifdef LIN_ADVANCE
 float extruder_advance_K = LA_K_DEF;
@@ -147,7 +155,7 @@ static inline uint8_t prev_block_index(uint8_t block_index) {
 //=============================functions         ============================
 //===========================================================================
 
-// Calculates the distance (not time) it takes to accelerate from initial_rate to target_rate using the
+// Calculates the distance (not time) it takes to accelerate from initial_rate to target_rate using the 
 // given acceleration:
 FORCE_INLINE float estimate_acceleration_distance(float initial_rate, float target_rate, float acceleration)
 {
@@ -160,12 +168,12 @@ FORCE_INLINE float estimate_acceleration_distance(float initial_rate, float targ
   }
 }
 
-// This function gives you the point at which you must start braking (at the rate of -acceleration) if
+// This function gives you the point at which you must start braking (at the rate of -acceleration) if 
 // you started at speed initial_rate and accelerated until this point and want to end at the final_rate after
 // a total travel of distance. This can be used to compute the intersection point between acceleration and
 // deceleration in the cases where the trapezoid has no plateau (i.e. never reaches maximum speed)
 
-FORCE_INLINE float intersection_distance(float initial_rate, float final_rate, float acceleration, float distance)
+FORCE_INLINE float intersection_distance(float initial_rate, float final_rate, float acceleration, float distance) 
 {
   if (acceleration!=0) {
     return((2.0*acceleration*distance-initial_rate*initial_rate+final_rate*final_rate)/
@@ -180,7 +188,7 @@ FORCE_INLINE float intersection_distance(float initial_rate, float final_rate, f
 #define MINIMAL_STEP_RATE 120
 
 // Calculates trapezoid parameters so that the entry- and exit-speed is compensated by the provided factors.
-void calculate_trapezoid_for_block(block_t *block, float entry_speed, float exit_speed)
+void calculate_trapezoid_for_block(block_t *block, float entry_speed, float exit_speed) 
 {
   // These two lines are the only floating point calculations performed in this routine.
   // initial_rate, final_rate in Hz.
@@ -240,7 +248,7 @@ void calculate_trapezoid_for_block(block_t *block, float entry_speed, float exit
     // Avoid negative numbers
     if (final_rate_sqr >= initial_rate_sqr) {
         // accelerate_steps = ceil(intersection_distance(initial_rate, final_rate, acceleration, block->step_event_count));
-        // intersection_distance(float initial_rate, float final_rate, float acceleration, float distance)
+        // intersection_distance(float initial_rate, float final_rate, float acceleration, float distance) 
         // (2.0*acceleration*distance-initial_rate*initial_rate+final_rate*final_rate)/(4.0*acceleration);
 #if 0
         accelerate_steps = (block->step_event_count >> 1) + (final_rate_sqr - initial_rate_sqr + acceleration_x4 - 1 + (block->step_event_count & 1) * acceleration_x2) / acceleration_x4;
@@ -300,9 +308,9 @@ void calculate_trapezoid_for_block(block_t *block, float entry_speed, float exit
   CRITICAL_SECTION_END;
 }
 
-// Calculates the maximum allowable entry speed, when you must be able to reach target_velocity using the
+// Calculates the maximum allowable entry speed, when you must be able to reach target_velocity using the 
 // decceleration within the allotted distance.
-FORCE_INLINE float max_allowable_entry_speed(float decceleration, float target_velocity, float distance)
+FORCE_INLINE float max_allowable_entry_speed(float decceleration, float target_velocity, float distance) 
 {
     // assert(decceleration < 0);
     return  sqrt(target_velocity*target_velocity-2*decceleration*distance);
@@ -310,17 +318,17 @@ FORCE_INLINE float max_allowable_entry_speed(float decceleration, float target_v
 
 // Recalculates the motion plan according to the following algorithm:
 //
-//   1. Go over every block in reverse order and calculate a junction speed reduction (i.e. block_t.entry_factor)
+//   1. Go over every block in reverse order and calculate a junction speed reduction (i.e. block_t.entry_factor) 
 //      so that:
 //     a. The junction jerk is within the set limit
-//     b. No speed reduction within one block requires faster deceleration than the one, true constant
+//     b. No speed reduction within one block requires faster deceleration than the one, true constant 
 //        acceleration.
-//   2. Go over every block in chronological order and dial down junction speed reduction values if
-//     a. The speed increase within one block would require faster accelleration than the one, true
+//   2. Go over every block in chronological order and dial down junction speed reduction values if 
+//     a. The speed increase within one block would require faster accelleration than the one, true 
 //        constant acceleration.
 //
-// When these stages are complete all blocks have an entry_factor that will allow all speed changes to
-// be performed using only the one, true constant acceleration, and where no junction jerk is jerkier than
+// When these stages are complete all blocks have an entry_factor that will allow all speed changes to 
+// be performed using only the one, true constant acceleration, and where no junction jerk is jerkier than 
 // the set limit. Finally it will:
 //
 //   3. Recalculate trapezoids for all blocks.
@@ -332,20 +340,20 @@ FORCE_INLINE float max_allowable_entry_speed(float decceleration, float target_v
 // Following sources may be used to optimize the 8-bit AVR code:
 // http://www.mikrocontroller.net/articles/AVR_Arithmetik
 // http://darcy.rsgc.on.ca/ACES/ICE4M/FixedPoint/avrfix.pdf
-//
+// 
 // https://github.com/gcc-mirror/gcc/blob/master/libgcc/config/avr/lib1funcs-fixed.S
 // https://gcc.gnu.org/onlinedocs/gcc/Fixed-Point.html
 // https://gcc.gnu.org/onlinedocs/gccint/Fixed-point-fractional-library-routines.html
-//
+// 
 // https://ucexperiment.wordpress.com/2015/04/04/arduino-s15-16-fixed-point-math-routines/
 // https://mekonik.wordpress.com/2009/03/18/arduino-avr-gcc-multiplication/
 // https://github.com/rekka/avrmultiplication
-//
+// 
 // https://people.ece.cornell.edu/land/courses/ece4760/Math/Floating_point/
 // https://courses.cit.cornell.edu/ee476/Math/
 // https://courses.cit.cornell.edu/ee476/Math/GCC644/fixedPt/multASM.S
 //
-void planner_recalculate(const float &safe_final_speed)
+void planner_recalculate(const float &safe_final_speed) 
 {
     // Reverse pass
     // Make a local copy of block_buffer_tail, because the interrupt can alter it
@@ -523,7 +531,7 @@ bool e_active()
 void check_axes_activity()
 {
   uint8_t x_active = 0;
-  uint8_t y_active = 0;
+  uint8_t y_active = 0;  
   uint8_t z_active = 0;
   uint8_t e_active = 0;
   uint8_t tail_fan_speed = fanSpeed;
@@ -619,7 +627,7 @@ void planner_reset_position()
             current_position[Z_AXIS] -= mbl.get_z(current_position[X_AXIS], current_position[Y_AXIS]);
         else {
             float t = float(step_events_completed) / float(current_block->step_event_count);
-            float vec[3] = {
+            float vec[3] = { 
               current_block->steps_x / cs.axis_steps_per_mm[X_AXIS],
               current_block->steps_y / cs.axis_steps_per_mm[Y_AXIS],
               current_block->steps_z / cs.axis_steps_per_mm[Z_AXIS]
@@ -682,7 +690,7 @@ void plan_set_position_curposXYZE(){
     plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);
 }
 
-// Add a new linear movement to the buffer. steps_x, _y and _z is the absolute position in
+// Add a new linear movement to the buffer. steps_x, _y and _z is the absolute position in 
 // mm. Microseconds specify how many microseconds the move should take to perform. To aid acceleration
 // calculation the caller must also provide the physical length of the line in millimeters.
 void plan_buffer_line(float x, float y, float z, const float &e, float feed_rate, const float* gcode_start_position, uint16_t segment_idx)
@@ -698,9 +706,9 @@ void plan_buffer_line(float x, float y, float z, const float &e, float feed_rate
   // Rest here until there is room in the buffer.
   if (block_buffer_tail == next_buffer_head) {
       do {
-          manage_heater();
+          manage_heater(); 
           // Vojtech: Don't disable motors inside the planner!
-          manage_inactivity(false);
+          manage_inactivity(false); 
           lcd_update(0);
       } while (block_buffer_tail == next_buffer_head);
   }
@@ -728,7 +736,7 @@ void plan_buffer_line(float x, float y, float z, const float &e, float feed_rate
       memcpy(block->gcode_start_position, gcode_start_position, sizeof(block_t::gcode_start_position));
   else
       memcpy(block->gcode_start_position, current_position, sizeof(block_t::gcode_start_position));
-
+  
   // Save the index of this segment (when a single G0/1/2/3 command plans multiple segments)
   block->segment_idx = segment_idx;
 
@@ -749,8 +757,53 @@ void plan_buffer_line(float x, float y, float z, const float &e, float feed_rate
       plan_reset_next_e_sched = true;
   }
 
-  // Apply the machine correction matrix.
-  world2machine(x, y);
+#ifdef ENABLE_AUTO_BED_LEVELING
+  apply_rotation_xyz(plan_bed_level_matrix, x, y, z);
+#endif // ENABLE_AUTO_BED_LEVELING
+
+    // Apply the machine correction matrix.
+    {
+      #if 0
+        SERIAL_ECHOPGM("Planner, current position - servos: ");
+        MYSERIAL.print(st_get_position_mm(X_AXIS), 5);
+        SERIAL_ECHOPGM(", ");
+        MYSERIAL.print(st_get_position_mm(Y_AXIS), 5);
+        SERIAL_ECHOPGM(", ");
+        MYSERIAL.print(st_get_position_mm(Z_AXIS), 5);
+        SERIAL_ECHOLNPGM("");
+
+        SERIAL_ECHOPGM("Planner, target position, initial: ");
+        MYSERIAL.print(x, 5);
+        SERIAL_ECHOPGM(", ");
+        MYSERIAL.print(y, 5);
+        SERIAL_ECHOLNPGM("");
+
+        SERIAL_ECHOPGM("Planner, world2machine: ");
+        MYSERIAL.print(world2machine_rotation_and_skew[0][0], 5);
+        SERIAL_ECHOPGM(", ");
+        MYSERIAL.print(world2machine_rotation_and_skew[0][1], 5);
+        SERIAL_ECHOPGM(", ");
+        MYSERIAL.print(world2machine_rotation_and_skew[1][0], 5);
+        SERIAL_ECHOPGM(", ");
+        MYSERIAL.print(world2machine_rotation_and_skew[1][1], 5);
+        SERIAL_ECHOLNPGM("");
+        SERIAL_ECHOPGM("Planner, offset: ");
+        MYSERIAL.print(world2machine_shift[0], 5);
+        SERIAL_ECHOPGM(", ");
+        MYSERIAL.print(world2machine_shift[1], 5);
+        SERIAL_ECHOLNPGM("");
+      #endif
+
+        world2machine(x, y);
+
+      #if 0
+        SERIAL_ECHOPGM("Planner, target position, corrected: ");
+        MYSERIAL.print(x, 5);
+        SERIAL_ECHOPGM(", ");
+        MYSERIAL.print(y, 5);
+        SERIAL_ECHOLNPGM("");
+      #endif
+    }
 
   // The target position of the tool in absolute steps
   // Calculate target position in absolute steps
@@ -775,7 +828,7 @@ void plan_buffer_line(float x, float y, float z, const float &e, float feed_rate
   int32_t dx = target[X_AXIS] - position[X_AXIS];
   int32_t dy = target[Y_AXIS] - position[Y_AXIS];
   int32_t dz = target[Z_AXIS] - position[Z_AXIS];
-
+  
   #ifdef PREVENT_DANGEROUS_EXTRUDE
   if(de)
   {
@@ -789,7 +842,7 @@ void plan_buffer_line(float x, float y, float z, const float &e, float feed_rate
       SERIAL_ECHO_START;
       SERIAL_ECHOLNRPGM(_n(" cold extrusion prevented"));////MSG_ERR_COLD_EXTRUDE_STOP
     }
-
+    
     #ifdef PREVENT_LENGTHY_EXTRUDE
     if(labs(de) > cs.axis_steps_per_mm[E_AXIS]*EXTRUDE_MAXLENGTH)
     {
@@ -803,7 +856,7 @@ void plan_buffer_line(float x, float y, float z, const float &e, float feed_rate
     }
     #endif
   }
-  #endif //PREVENT_DANGEROUS_EXTRUDE
+  #endif
 
   // Number of steps for each axis
 #ifndef COREXY
@@ -822,11 +875,11 @@ block->steps[Y_AXIS].wide = labs(dx - dy);
 
   // Bail if this is a zero-length block
   if (block->step_event_count.wide <= dropsegments)
-  {
+  { 
 #ifdef PLANNER_DIAGNOSTICS
     planner_update_queue_min_counter();
 #endif /* PLANNER_DIAGNOSTICS */
-    return;
+    return; 
   }
 
   block->fan_speed = fanSpeed;
@@ -864,15 +917,15 @@ block->steps[Y_AXIS].wide = labs(dx - dy);
   else
   {
     if(feed_rate<cs.minimumfeedrate) feed_rate=cs.minimumfeedrate;
-  }
+  } 
 
-/* This part of the code calculates the total length of the movement.
+/* This part of the code calculates the total length of the movement. 
 For cartesian bots, the X_AXIS is the real X movement and same for Y_AXIS.
 But for corexy bots, that is not true. The "X_AXIS" and "Y_AXIS" motors (that should be named to A_AXIS
 and B_AXIS) cannot be used for X and Y length, because A=X+Y and B=X-Y.
-So we need to create other 2 "AXIS", named X_HEAD and Y_HEAD, meaning the real displacement of the Head.
+So we need to create other 2 "AXIS", named X_HEAD and Y_HEAD, meaning the real displacement of the Head. 
 Having the real displacement of the head, we can calculate the total movement length and apply the desired speed.
-*/
+*/ 
   #ifndef COREXY
     float delta_mm[4];
     delta_mm[X_AXIS] = dx / cs.axis_steps_per_mm[X_AXIS];
@@ -889,16 +942,16 @@ Having the real displacement of the head, we can calculate the total movement le
   if ( block->steps[X_AXIS].wide <=dropsegments && block->steps[Y_AXIS].wide <=dropsegments && block->steps[Z_AXIS].wide <=dropsegments )
   {
     block->millimeters = fabs(delta_mm[E_AXIS]);
-  }
+  } 
   else
   {
     #ifndef COREXY
       block->millimeters = sqrt(square(delta_mm[X_AXIS]) + square(delta_mm[Y_AXIS]) + square(delta_mm[Z_AXIS]));
 	#else
 	  block->millimeters = sqrt(square(delta_mm[X_HEAD]) + square(delta_mm[Y_HEAD]) + square(delta_mm[Z_AXIS]));
-    #endif
+    #endif	
   }
-  float inverse_millimeters = 1.0/block->millimeters;  // Inverse millimeters to remove multiple divides
+  float inverse_millimeters = 1.0/block->millimeters;  // Inverse millimeters to remove multiple divides 
 
     // Calculate speed in mm/second for each axis. No divide by zero due to previous checks.
   float inverse_second = feed_rate * inverse_millimeters;
@@ -933,7 +986,7 @@ Having the real displacement of the head, we can calculate the total movement le
 	}
   }
 
-  // Correct the speed
+  // Correct the speed  
   if( speed_factor < 1.0)
   {
     for(unsigned char i=0; i < 4; i++)
@@ -947,7 +1000,7 @@ Having the real displacement of the head, we can calculate the total movement le
 #ifdef LIN_ADVANCE
   float e_D_ratio = 0;
 #endif
-  // Compute and limit the acceleration rate for the trapezoid generator.
+  // Compute and limit the acceleration rate for the trapezoid generator.  
   // block->step_event_count ... event count of the fastest axis
   // block->millimeters ... Euclidian length of the XYZ movement or the E length, if no XYZ movement.
   float steps_per_mm = block->step_event_count.wide/block->millimeters;
@@ -1089,11 +1142,11 @@ Having the real displacement of the head, we can calculate the total movement le
               v_entry *= v_factor;
           }
           // Calculate the jerk depending on whether the axis is coasting in the same direction or reversing a direction.
-          float jerk =
+          float jerk = 
               (v_exit > v_entry) ?
                   ((v_entry > 0.f || v_exit < 0.f) ?
                       // coasting
-                      (v_exit - v_entry) :
+                      (v_exit - v_entry) : 
                       // axis reversal
                       max(v_exit, - v_entry)) :
                   // v_exit <= v_entry
@@ -1216,7 +1269,7 @@ Having the real displacement of the head, we can calculate the total movement le
   position_float[Z_AXIS] = z;
   position_float[E_AXIS] = e;
   #endif
-
+    
   // Recalculate the trapezoids to maximize speed at the segment transitions while respecting
   // the machine limits (maximum acceleration and maximum jerk).
   // This runs asynchronously with the stepper interrupt controller, which may
@@ -1238,14 +1291,33 @@ Having the real displacement of the head, we can calculate the total movement le
   ENABLE_STEPPER_DRIVER_INTERRUPT();
 }
 
+#ifdef ENABLE_AUTO_BED_LEVELING
+vector_3 plan_get_position() {
+	vector_3 position = vector_3(st_get_position_mm(X_AXIS), st_get_position_mm(Y_AXIS), st_get_position_mm(Z_AXIS));
+
+	//position.debug("in plan_get position");
+	//plan_bed_level_matrix.debug("in plan_get bed_level");
+	matrix_3x3 inverse = matrix_3x3::transpose(plan_bed_level_matrix);
+	//inverse.debug("in plan_get inverse");
+	position.apply_rotation(inverse);
+	//position.debug("after rotation");
+
+	return position;
+}
+#endif // ENABLE_AUTO_BED_LEVELING
+
 void plan_set_position(float x, float y, float z, const float &e)
 {
+#ifdef ENABLE_AUTO_BED_LEVELING
+    apply_rotation_xyz(plan_bed_level_matrix, x, y, z);
+#endif // ENABLE_AUTO_BED_LEVELING
+
     world2machine(x, y);
 
   position[X_AXIS] = lround(x*cs.axis_steps_per_mm[X_AXIS]);
   position[Y_AXIS] = lround(y*cs.axis_steps_per_mm[Y_AXIS]);
 #ifdef MESH_BED_LEVELING
-  position[Z_AXIS] = mbl.active ?
+  position[Z_AXIS] = mbl.active ? 
     lround((z+mbl.get_z(x, y))*cs.axis_steps_per_mm[Z_AXIS]) :
     lround(z*cs.axis_steps_per_mm[Z_AXIS]);
 #else
@@ -1278,7 +1350,7 @@ void plan_set_e_position(const float &e)
   #ifdef LIN_ADVANCE
   position_float[E_AXIS] = e;
   #endif
-  position[E_AXIS] = lround(e*cs.axis_steps_per_mm[E_AXIS]);
+  position[E_AXIS] = lround(e*cs.axis_steps_per_mm[E_AXIS]);  
   st_set_e_position(position[E_AXIS]);
 }
 
@@ -1292,7 +1364,7 @@ void set_extrude_min_temp(int temp)
 {
   extrude_min_temp = temp;
 }
-#endif //PREVENT_DANGEROUS_EXTRUDE
+#endif
 
 // Calculate the steps/s^2 acceleration rates, based on the mm/s^s
 void reset_acceleration_rates()
@@ -1350,7 +1422,7 @@ uint16_t planner_calc_sd_length()
 	while (_block_buffer_head != _block_buffer_tail)
 	{
 		sdlen += block_buffer[_block_buffer_tail].sdlen;
-	    _block_buffer_tail = (_block_buffer_tail + 1) & (BLOCK_BUFFER_SIZE - 1);
+	    _block_buffer_tail = (_block_buffer_tail + 1) & (BLOCK_BUFFER_SIZE - 1);  
 	}
 	return sdlen;
 }

Firmware/planner.h

@@ -18,7 +18,7 @@
   along with Grbl.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-// This module is to be considered a sub-module of stepper.c. Please don't include
+// This module is to be considered a sub-module of stepper.c. Please don't include 
 // this file from any other module.
 
 #ifndef planner_h
@@ -26,6 +26,10 @@
 
 #include "Marlin.h"
 
+#ifdef ENABLE_AUTO_BED_LEVELING
+#include "vector_3.h"
+#endif // ENABLE_AUTO_BED_LEVELING
+
 enum BlockFlag {
     // Planner flag to recalculate trapezoids on entry junction.
     // This flag has an optimization purpose only.
@@ -62,7 +66,7 @@ union dda_usteps_t
   };
 };
 
-// This struct is used when buffering the setup for each linear movement "nominal" values are as specified in
+// This struct is used when buffering the setup for each linear movement "nominal" values are as specified in 
 // the source g-code and may never actually be reached if acceleration management is active.
 typedef struct {
   // Fields used by the bresenham algorithm for tracing the line
@@ -95,8 +99,8 @@ typedef struct {
 
   // Settings for the trapezoid generator (runs inside an interrupt handler).
   // Changing the following values in the planner needs to be synchronized with the interrupt handler by disabling the interrupts.
-  uint32_t nominal_rate;              // The nominal step rate for this block in step_events/sec
-  uint32_t initial_rate;              // The jerk-adjusted step rate at start of block
+  uint32_t nominal_rate;              // The nominal step rate for this block in step_events/sec 
+  uint32_t initial_rate;              // The jerk-adjusted step rate at start of block  
   uint32_t final_rate;                // The minimal rate at exit
   uint32_t acceleration_steps_per_s2; // acceleration steps/sec^2
   uint8_t fan_speed; // Print fan speed, ranges from 0 to 255
@@ -126,10 +130,25 @@ typedef struct {
 extern float extruder_advance_K;    // Linear-advance K factor
 #endif
 
-// Initialize the motion plan subsystem
+#ifdef ENABLE_AUTO_BED_LEVELING
+// this holds the required transform to compensate for bed level
+extern matrix_3x3 plan_bed_level_matrix;
+#endif // #ifdef ENABLE_AUTO_BED_LEVELING
+
+// Initialize the motion plan subsystem      
 void plan_init();
 
-/// Extracting common call of
+// Add a new linear movement to the buffer. x, y and z is the signed, absolute target position in 
+// millimaters. Feed rate specifies the speed of the motion.
+
+#ifdef ENABLE_AUTO_BED_LEVELING
+void plan_buffer_line(float x, float y, float z, const float &e, float feed_rate);
+
+// Get the position applying the bed level matrix if enabled
+vector_3 plan_get_position();
+#else
+
+/// Extracting common call of 
 /// plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[3], ...
 /// saves almost 5KB.
 /// The performance penalty is negligible, since these planned lines are usually maintenance moves with the extruder.
@@ -140,9 +159,15 @@ void plan_buffer_line_destinationXYZE(float feed_rate);
 void plan_set_position_curposXYZE();
 
 void plan_buffer_line(float x, float y, float z, const float &e, float feed_rate, const float* gcode_start_position = NULL, uint16_t segment_idx = 0);
+//void plan_buffer_line(const float &x, const float &y, const float &z, const float &e, float feed_rate, const uint8_t &extruder);
+#endif // ENABLE_AUTO_BED_LEVELING
 
 // Set position. Used for G92 instructions.
+//#ifdef ENABLE_AUTO_BED_LEVELING
 void plan_set_position(float x, float y, float z, const float &e);
+//#else
+//void plan_set_position(const float &x, const float &y, const float &z, const float &e);
+//#endif // ENABLE_AUTO_BED_LEVELING
 
 void plan_set_z_position(const float &z);
 void plan_set_e_position(const float &e);
@@ -162,7 +187,7 @@ extern float* max_feedrate;
 
 
 // Use M201 to override by software
-extern uint32_t* max_acceleration_mm_per_s2;
+extern uint32_t* max_acceleration_mm_per_s2; 
 extern uint32_t max_acceleration_steps_per_s2[NUM_AXIS];
 
 extern long position[NUM_AXIS];
@@ -186,15 +211,15 @@ extern block_t block_buffer[BLOCK_BUFFER_SIZE];            // A ring buffer for
 // Index of the next block to be pushed into the planner queue.
 extern volatile uint8_t block_buffer_head;
 // Index of the first block in the planner queue.
-// This is the block, which is being currently processed by the stepper routine,
+// This is the block, which is being currently processed by the stepper routine, 
 // or which is first to be processed by the stepper routine.
 extern volatile uint8_t block_buffer_tail;
 // Called when the current block is no longer needed. Discards the block and makes the memory
-// available for new blocks.
-FORCE_INLINE void plan_discard_current_block()
+// available for new blocks.    
+FORCE_INLINE void plan_discard_current_block()  
 {
   if (block_buffer_head != block_buffer_tail) {
-    block_buffer_tail = (block_buffer_tail + 1) & (BLOCK_BUFFER_SIZE - 1);
+    block_buffer_tail = (block_buffer_tail + 1) & (BLOCK_BUFFER_SIZE - 1);  
   }
 }
 
@@ -202,10 +227,10 @@ FORCE_INLINE void plan_discard_current_block()
 // Mark this block as busy, so its velocities and acceperations will be no more recalculated
 // by the planner routine.
 // Returns NULL if buffer empty
-FORCE_INLINE block_t *plan_get_current_block()
+FORCE_INLINE block_t *plan_get_current_block() 
 {
-  if (block_buffer_head == block_buffer_tail) {
-    return(NULL);
+  if (block_buffer_head == block_buffer_tail) { 
+    return(NULL); 
   }
   block_t *block = &block_buffer[block_buffer_tail];
   block->busy = true;
@@ -213,8 +238,8 @@ FORCE_INLINE block_t *plan_get_current_block()
 }
 
 // Returns true if the buffer has a queued block, false otherwise
-FORCE_INLINE bool blocks_queued() {
-	return (block_buffer_head != block_buffer_tail);
+FORCE_INLINE bool blocks_queued() { 
+	return (block_buffer_head != block_buffer_tail); 
 }
 
 //return the nr of buffered moves
@@ -225,7 +250,7 @@ FORCE_INLINE uint8_t moves_planned() {
 FORCE_INLINE bool planner_queue_full() {
     uint8_t next_block_index = block_buffer_head;
     if (++ next_block_index == BLOCK_BUFFER_SIZE)
-        next_block_index = 0;
+        next_block_index = 0; 
     return block_buffer_tail == next_block_index;
 }
 
@@ -241,7 +266,7 @@ extern bool planner_aborted;
 #ifdef PREVENT_DANGEROUS_EXTRUDE
 extern int extrude_min_temp;
 void set_extrude_min_temp(int temp);
-#endif //PREVENT_DANGEROUS_EXTRUDE
+#endif
 
 void reset_acceleration_rates();
 #endif