This function is not specific to power panic. Some printer models
do not have power panic enabled.
This change fixes a build failure
No change in memory
- Only queue M26 for SD prints
- Add M110 to set gcode_LastN for host prints
- Remove one debug log to save resource (52 bytes)
Change in memory:
Flash: -14 bytes
SRAM: 0 bytes
When a SD file is selected to print
save the DOS 8.3 extension into EEPROM.
After a power outage, the correct file extension is then
selected instead of always assuming it's ".gco"
This allows users to recover ".g" files.
Change in memory:
Flash: +104 bytes
SRAM: 0 bytes
There is no need to read one byte at a time. We can simply
read the whole block in one go. This saves some flash memory.
Change in memory:
Flash: -18 bytes
SRAM: 0 bytes
We can just read the whole EEPROM block since short filenames
are always null terminated. strcat_P will then apply the file extension
at the correct position.
Change in memory:
Flash: -24 bytes
SRAM: 0 bytes
If the saved printing type was USB, then EEPROM_FILENAME
does not contain anything. The firmware should also
not be trying to open a file on a SD card which is maybe
not even mounted.
Change in memory:
Flash: +12 bytes
SRAM: 0 bytes
If vSense changes at runtime due to Run current
being changed. Then we must always shift the Hold current
correctly. Whether the vSense is changing 1 -> 0 or 0 ->1
Change in memory (with TMC2130_SERVICE_CODES_M910_M918):
Flash: +76 bytes
SRAM: 0 bytes
- Always re-calculate the Vsense flag when the currents are changed
- Make sure Hold current is not larger than Run current
- Added SetCurrents() function from MMU FW
- Added MotorCurrents structure from MMU FW
- Various code size optimisations e.g. in power panic
Change in memory:
Flash: -10 bytes
SRAM: +4 bytes
planner_abort_hard() calls planner_reset_position() which
will set current_position vector to the machine position.
We want to save this position when there is no position already saved
(i.e. when there is no partial back-up or a saved print in RAM)
When a power outage comes, the printer is in the middle of a gcode move.
And at the moment a gcode is executed by the planner, the planner will update
current_position vector to the final destination vector. This means current_position
vector is invalidated during a power outage and so we must check what the
actual machine position is instead and save it.
This was working correctly before, this commit only fixes the regression
in my pull request.
Change in memory:
Flash: -2 bytes
SRAM: 0 bytes
A partial backup is needed in scenarios where the extruder may be
parked after a print is saved. For example during a blocking wait for the user in M600
Or during a MMU error screen.
A sudden power panic at this point would previously save the parked position
into EEPROM. When the print is recovered it would print in mid air.
1) current_position[Z_AXIS] is not always correct. saved_pos[Z_AXIS]
should always represent the correct resume position for the Z-axis
2) Use the saved position to fetch the Z-offset value from
the mesh bed leveling grid. In case the extruder is parked during
power panic, the previous code may extract the wrong mesh
bed leveling offset (due to extruder being located at different
X and Y axis coordinates)
I verified via printf that sizeof(saved_start_position) = 16 (i.e. 4 float values)
We simply want to write 16 bytes to address
EEPROM_UVLO_SAVED_START_POSITION
Change in memory:
Flash: -160 bytes
SRAM: 0 bytes
This allows us to restore the position of all axis saved in RAM
If the extruder had been parked to the side for example
due to filament runout. Then the original position (before parking)
should now be restored
Change in memory:
Flash: +40 bytes
SRAM: 0 bytes
If a print has been saved to RAM such as during a filament runout,
do not overwrite these saved values if a sudden
power panic appears.
Additionally, change the saved types to be the same as power panic when saving to RAM:
- Bed target temperature is uint8_t (0 to 255) instead of float
- Extruder target temperature is uint16_t instead of float
Doing this change allows us to re-use the same global variables and
avoid creating local variables during power panic.
Change in memory:
Flash: -246 bytes
SRAM: -5 bytes
3d-gussner
gudnimg