helloworld.py
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	#!/usr/bin/python
	# -- coding: utf-8 --
	import os, sys

	# add ../../Sources to the PYTHONPATH
	sys.path.append(os.path.join("..", "..", "Sources"))
	sys.path.append(os.path.join("..", "..", "Sources"))
	from yocto_api import *
	from yocto_serialport import *

	# Setup the API to use local USB devices. You can
	# use an IP address instead of 'usb' if the device
	# is connected to a network.

	errmsg = YRefParam()
	if YAPI.RegisterHub("usb", errmsg) != YAPI.SUCCESS:
	sys.exit("init error" + errmsg.value)

	if len(sys.argv) > 1:
	serialPort = YSerialPort.FindSerialPort(sys.argv[1] + ".serialPort")
	if not serialPort.isOnline():
	sys.exit('Module not connected')
	else:
	serialPort = YSerialPort.FirstSerialPort()
	if serialPort is None:
	sys.exit('No module connected (check cable)')

	serialPort.set_serialMode("9600,8N1")
	serialPort.set_protocol("Line")
	serialPort.reset()

	while True:
	print("Type line to send, or Ctrl-C to exit:")
	line = input(": ") # use raw_input in python 2.x
	if line == "":
	break
	serialPort.writeLine(line)
	YAPI.Sleep(500)
	line = serialPort.readLine()
	if line != "":
	print("Received: " + line)
	YAPI.FreeAPI()