gcodesender.py with "improved" defaults

gcodesender.py

#!/usr/bin/python
"""\
Simple g-code streaming script
https://github.com/bborncr/gcodesender.py/blob/master/gcodesender.py
"""
 
import serial
import time
import argparse

parser = argparse.ArgumentParser(description='This is a basic gcode sender. http://crcibernetica.com')
parser.add_argument('-p','--port',help='Input USB port', nargs="?", default="/dev/ttyUSB0")
parser.add_argument('file', help='Gcode file name')
args = parser.parse_args()
 
## show values ##
print ("USB Port: %s" % args.port )
print ("Gcode file: %s" % args.file )


def removeComment(string):
	if (string.find(';')==-1):
		return string
	else:
		return string[:string.index(';')]
 
# Open serial port
#s = serial.Serial('/dev/ttyACM0',115200)
s = serial.Serial(args.port,115200)
print 'Opening Serial Port'
 
# Open g-code file
#f = open('/media/UNTITLED/shoulder.g','r');
f = open(args.file,'r');
print 'Opening gcode file'
 
# Wake up 
s.write("\r\n\r\n") # Hit enter a few times to wake the Printrbot
time.sleep(2)   # Wait for Printrbot to initialize
s.flushInput()  # Flush startup text in serial input
print 'Sending gcode'
 
# Stream g-code
for line in f:
	l = removeComment(line)
	l = l.strip() # Strip all EOL characters for streaming
	if  (l.isspace()==False and len(l)>0) :
		print 'Sending: ' + l
		s.write(l + '\n') # Send g-code block
		grbl_out = s.readline() # Wait for response with carriage return
		print ' : ' + grbl_out.strip()
 
# Wait here until printing is finished to close serial port and file.
raw_input("  Press <Enter> to exit.")
 
# Close file and serial port
f.close()
s.close()