Python操作串口

import serial
import sys

try:
	ser = serial.Serial('/dev/ttyUSB0', 9600)
except Exception, e:
	print 'open serial failed.'
	exit(1)

print 'A Serial Echo Is Running...'
while True:
	# echo
	s = ser.read()
	ser.write(s)

	# write to stdout and flush it
	sys.stdout.write(s)
	sys.stdout.flush()