A tool to run G-CODE file on marlin-compatible (repetier, etc) 3d-printers

3dpexec.py

#!/usr/bin/env python2.7

import serial
import time
import sys
from datetime import datetime
import os
import argparse

def heuristicallyFindSerPort():
    ports = filter(lambda s: s.startswith('ttyUSB'), os.listdir('/dev'))
    if (len(ports) > 0):
        return '/dev/'+ports[0]
    return '/dev/ttyUSB0'

parser = argparse.ArgumentParser(description='Execute G-CODE file on a 3d-printer')

defport = heuristicallyFindSerPort()
parser.add_argument('--serport', metavar='P', type=str, default=defport,
                    help='path to serial device')
parser.add_argument('--baudrate', metavar='B', type=int, default=250000,
                    help='baudrate')
parser.add_argument('--debug', metavar='D', type=bool, default=False,
                    help='debug mode')
parser.add_argument('--file', metavar='F', type=str, default='',
                    help='path to G-CODE file')
args = parser.parse_args()

DBG=args.debug

def debug(s):
    if DBG:
        print 'debug:',s

tty = args.serport
baudrate = args.baudrate
codefile = args.file

print 'Opening printer connection via '+tty+' @ '+str(baudrate)+' baud'

com = serial.Serial()
com.port = tty
com.baudrate = baudrate
com.timeout = 1
com.setDTR(False)
com.open()

print 'Waiting 2 seconds...'
time.sleep(2)

def execCMD(gcode, ser):
    com.write(gcode+'\n')
    com.flush()
    while True:
        r = com.readline()
        debug(r)
        if r.startswith('ok'):
            return 0

print 'Executing ',codefile

code = filter(lambda expr: not expr.startswith(';'), map(lambda s: s.strip(), open(codefile).readlines()));

debug(code)

t1 = datetime.now()

i = 0

for expr in code:
    execCMD(expr, com)
    i += 1
    debug('cmd '+str(i)+'/'+str(len(code)))
    delta = datetime.now() - t1
    print "%8.1f %s" % (int(delta.total_seconds()), expr)

t2 = datetime.now()
delta = t2 - t1

print 'Done in '+str(delta.total_seconds())+ 's'

com.close()