Cura/serialCommunication.py

   1 """
   2 Serial communication with the printer for printing is done from a separate process,
   3 this to ensure that the PIL does not block the serial printing.
   4
   5 This file is the 2nd process that is started to handle communication with the printer.
   6 And handles all communication with the initial process.
   7 """
   8
   9 __copyright__ = "Copyright (C) 2013 David Braam - Released under terms of the AGPLv3 License"
  10 import sys
  11 import time
  12 import os
  13 import json
  14
  15 from Cura.util import machineCom
  16
  17 class serialComm(object):
  18         def __init__(self, portName):
  19                 self._comm = None
  20                 self._gcodeList = []
  21
  22                 self._comm = machineCom.MachineCom(portName, callbackObject=self)
  23
  24         def mcLog(self, message):
  25                 sys.stdout.write('log:%s\n' % (message))
  26
  27         def mcTempUpdate(self, temp, bedTemp, targetTemp, bedTargetTemp):
  28                 sys.stdout.write('temp:%s\n' % json.dumps(temp))
  29
  30         def mcStateChange(self, state):
  31                 if self._comm is None:
  32                         return
  33                 sys.stdout.write('state:%d:%s\n' % (state, self._comm.getStateString()))
  34
  35         def mcMessage(self, message):
  36                 sys.stdout.write('message:%s\n' % (message))
  37
  38         def mcProgress(self, lineNr):
  39                 sys.stdout.write('progress:%d\n' % (lineNr))
  40
  41         def mcZChange(self, newZ):
  42                 sys.stdout.write('changeZ:%d\n' % (newZ))
  43
  44         def monitorStdin(self):
  45                 while not self._comm.isClosed():
  46                         line = sys.stdin.readline().strip()
  47                         line = line.split(':', 1)
  48                         if line[0] == 'STOP':
  49                                 self._comm.cancelPrint()
  50                                 self._gcodeList = ['M110']
  51                         elif line[0] == 'G':
  52                                 self._gcodeList.append(line[1])
  53                         elif line[0] == 'START':
  54                                 self._comm.printGCode(self._gcodeList)
  55                         else:
  56                                 sys.stderr.write(str(line))
  57
  58 def main():
  59         if len(sys.argv) != 2:
  60                 return
  61         sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)
  62         portName = sys.argv[1]
  63         comm = serialComm(portName)
  64         comm.monitorStdin()
  65
  66 if __name__ == '__main__':
  67         main()