From 0016b778277087688b3ebfa576ea27662208adc3 Mon Sep 17 00:00:00 2001
From: 3d-gussner <3d.gussner@gmail.com>
Date: Thu, 9 Nov 2023 09:53:37 +0100
Subject: [PATCH] Updated MMU serial status message - Shown during bootup -
 Shown on LCD menue MMU [ON|OFF] - Shown using `M709` - Shown when `Disable`d
 with MMU ERROR FW UPDATE NEEDED

---
 Firmware/Marlin_main.cpp    |  3 ++-
 Firmware/mmu2.cpp           | 14 ++++++++++++++
 Firmware/mmu2.h             |  3 +++
 Firmware/mmu2_reporting.cpp |  1 +
 Firmware/ultralcd.cpp       |  1 +
 5 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index 2e1001cc5..b37818402 100644
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -1125,6 +1125,7 @@ void setup()
 	if (eeprom_init_default_byte((uint8_t *)EEPROM_MMU_ENABLED, 0)) {
 		MMU2::mmu2.Start();
 	}
+	MMU2::mmu2.Status();
 	SpoolJoin::spooljoin.initSpoolJoinStatus();
 
 	//SERIAL_ECHOPAIR("Active sheet before:", static_cast<unsigned long int>(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet))));
@@ -8640,7 +8641,7 @@ Sigma_Exit:
                 break;
             }
         }
-        printf_P(_n("MMU state:%d\n"), MMU2::mmu2.Enabled());
+    MMU2::mmu2.Status();
     }
     break;
 
diff --git a/Firmware/mmu2.cpp b/Firmware/mmu2.cpp
index 3797d9e54..fd35e7514 100644
--- a/Firmware/mmu2.cpp
+++ b/Firmware/mmu2.cpp
@@ -12,6 +12,9 @@
 #include "strlen_cx.h"
 #include "SpoolJoin.h"
 
+#include "messages.h"
+#include "language.h"
+
 #ifdef __AVR__
 // As of FW 3.12 we only support building the FW with only one extruder, all the multi-extruder infrastructure will be removed.
 // Saves at least 800B of code size
@@ -52,6 +55,17 @@ MMU2::MMU2()
     , tmcFailures(0) {
 }
 
+void MMU2::Status() {
+    // Useful information to see during bootup and change state
+    SERIAL_ECHOPGM("MMU is ");
+    uint8_t status = eeprom_init_default_byte((uint8_t*)EEPROM_MMU_ENABLED, 0);
+    if (status == 1) {
+        SERIAL_ECHOLNRPGM(_O(MSG_ON));
+    } else {
+        SERIAL_ECHOLNRPGM(_O(MSG_OFF));
+    }
+}
+
 void MMU2::Start() {
     mmu2Serial.begin(MMU_BAUD);
 
diff --git a/Firmware/mmu2.h b/Firmware/mmu2.h
index f5eea95b9..0765e82ec 100644
--- a/Firmware/mmu2.h
+++ b/Firmware/mmu2.h
@@ -39,6 +39,9 @@ public:
     /// Stops the protocol logic, closes the UART, powers OFF the MMU
     void Stop();
 
+    /// Serial output of MMU state
+    void Status();
+
     inline xState State() const { return state; }
 
     inline bool Enabled() const { return State() == xState::Active; }
diff --git a/Firmware/mmu2_reporting.cpp b/Firmware/mmu2_reporting.cpp
index 3e3d69dc9..45f18034c 100644
--- a/Firmware/mmu2_reporting.cpp
+++ b/Firmware/mmu2_reporting.cpp
@@ -347,6 +347,7 @@ void TryLoadUnloadReporter::DumpToSerial(){
 /// Disables MMU in EEPROM
 void DisableMMUInSettings() {
     eeprom_update_byte((uint8_t *)EEPROM_MMU_ENABLED, false);
+    mmu2.Status();
 }
 
 void IncrementLoadFails(){
diff --git a/Firmware/ultralcd.cpp b/Firmware/ultralcd.cpp
index 203ab22f8..e6b90a9f4 100644
--- a/Firmware/ultralcd.cpp
+++ b/Firmware/ultralcd.cpp
@@ -4093,6 +4093,7 @@ static void mmu_enable_switch()
     }
 
     eeprom_toggle((uint8_t *)EEPROM_MMU_ENABLED);
+    MMU2::mmu2.Status();
 }
 
 static void SETTINGS_SILENT_MODE()