ScribbleJ/sjfw — pull request #4 by triffid (2011-11-18 10:57:02+00:00)
Title: Sprinter-style SD Commands

Implemented:
M20 - list files
M21 - initialise SD
M22 - unmount and prepare for removal
M23 - select file
M24 - start/resume SD print
M25 - pause SD print
M27 - report status

plus a few random other bits and pieces

These hook deep into lots of code, please review the commits carefully!