Qt5.6.1modbus测试程序（含收发）

#! /usr/bin/env python #coding=utf-8 import pty import os import select def mkpty(): # master1, slave = pty.openpty() slaveName1 = os.ttyname(slave) master2, slave = pty.openpty() slaveName2 = os.ttyname(slave) print '\nslave device names: ', slaveName1, slaveName2 return master1, master2 if __name__ == "__main__": master1, master2 = mkpty() while True: rl, wl, el = select.select([master1,master2], [], [], 1) for master in rl: data = os.read(master, 128) print "read %d data." % len(data) if master==master1: os.write(master2, data) else: os.write(master1, data)