ngc-submit.py

#!/usr/bin/env python2
#
# submit an ngc file to a running LinuxCNC / Machinekit instance
#
# used as a filter for https://github.com/stewartoallen/grid-print
#

import sys
from shutil import copyfile
import linuxcnc

def ok_for_mdi(s):
    s.poll()
    return not s.estop and s.enabled and s.homed and (s.interp_state == linuxcnc.INTERP_IDLE)

def main(argv):
   src = sys.argv[1]
   dst = sys.argv[2]

   print(src)
   print(dst)
   copyfile(src, dst) # for grid-print

   ngc = "/tmp/gcode.ngc"
   copyfile(src, ngc) # for LinuxCNC / Machinekit

   try:
      s = linuxcnc.stat() # create a connection to the status channel
      c = linuxcnc.command()
      if (not ok_for_mdi(s)):
         print "not idle and not homed. Not submitting ngc job. Exiting"
         sys.exit(1)
      c.mode(linuxcnc.MODE_AUTO)
      c.program_open(ngc)
      s.poll()
      print(s.file)

#      c.reset_interpreter()
#      for x in dir(s):
#         if not x.startswith('_'):
#            print x, getattr(s,x)

   except linuxcnc.error, detail:
      print "error", detail
      sys.exit(1)

if __name__ == "__main__":
   main(sys.argv[1:])