Snapmaker
Snapmaker 2 doesn't understand GCodes about removable storage, such as M21 (initialize SD)
See Marlin docs > gcode > M21.
Setup: I have the Snapmaker 2 A350, configured for 3D printing, connected over USB to an Octoprint server (on a Raspberry Pi 4). It seems to be up to date as of 2023-09-23, will update with firmware version if requested.
Trying to access flashdrive files from Octoprint. The process begins with sending M21 (init_SD), and the printer states it doesn't understand the command.
Send: M21
Recv: echo:Unknown command: "M21"
Recv: ok
Other SD card related commands to investigate similarly:
- M20; List SD files
- M21; Initialize SD
- M22; Release SD
- M23; Select SD file
- M24; Start/Resume print from SD
- M25; Pause SD Print
- M26; Set SD Position (I'm assuming it means line number?)
- M27; Report SD print progress
- M28; Start SD Write (transcribe commands to file instead of printing)
- M29; Stop SD Write
- M30; Delete SD File
- M32; Select file and print (useful for importing sub-scripts, such as GCode that every print should begin with)
- M33; Get long path (What file are we printing right now?)
- M34; SD Card Sorting options
- M524; Abandon SD print, turn off heaters
// tangent, but, while discussing gcode support, we could also use M117; Set LCD Message. It just says OK and doesn't show anything on the display. I guess because the screen isn't part of the controller, but, come on, it's the only screen we have, it'd be great to have that patched. But this should be a separate bug report
