Can someone point me to a good description of gcodes for SD Card printing? I want to add SD Card upload and printing to #GcodeSimulator but my Reprap does not have SD card support to try it out.For example its unclear to me what M27 returns
FWIW Octoprint has code to integrate with the SD Card. I’ve only messed with getting the file list and managing files myself so I’m not 100% clear on M27.
I believe M27 returns the byte position in the print but I’m not 100% sure of that.
Would it be useful to look at the source for Marlin or Repetier fw and reverse engineer from there?