#!/usr/bin/env python
"""
#  Copyright (C) 2008 Michael Buesch <mb@bu3sch.de>
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License version 3
#  as published by the Free Software Foundation.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
"""

import getopt
import sys
from serial.serialposix import *

# Serial communication port configuration
CONFIG_BAUDRATE = 9600
CONFIG_BYTESIZE = 8
CONFIG_PARITY = PARITY_EVEN
CONFIG_STOPBITS = 2


def usage():
	print "Pressure control - remote configuration"
	print ""
	print "Copyright (C) 2008 Michael Buesch <mb@bu3sch.de>"
	print "Licensed under the GNU/GPL version 3"
	print ""
	print "Usage: pctl-remote [OPTIONS] /dev/ttyS0"
	print ""
	print "-h|--help            Print this help text"

def parseArgs():
	global opt_ttyfile

	if len(sys.argv) < 2:
		usage()
		sys.exit(1)

	opt_ttyfile = sys.argv[-1]

	try:
		(opts, args) = getopt.getopt(sys.argv[1:-1],
			"h",
			[ "help" ])
	except getopt.GetoptError:
		usage()
		sys.exit(1)

	for (o, v) in opts:
		if o in ("-h", "--help"):
			usage()
			sys.exit(0)

def main():
	parseArgs()

	fd = Serial(opt_ttyfile, CONFIG_BAUDRATE,
		    CONFIG_BYTESIZE, CONFIG_PARITY,
		    CONFIG_STOPBITS)

	while True:
		x = fd.readline()
		sys.stdout.write(x)

if __name__ == "__main__":
	try:
		main()
	except SerialException, e:
		print "[Serial error]  %s" % e.message