Linux虛擬串口

將下列Python代碼保存成VitrualCom.py:

#! /usr/bin/env python

#coding=utf-8



import pty
import os
import select



def mkpty():
    # 打開偽終端
    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)

在終端下面輸入：

sudo python VirtualCom.py

便會顯示：

slave device names:  /dev/pts/1 /dev/pts/2

這樣/dev/pts/1與/dev/pts/2串口便相連接在一起了。

參考：http://fayaa.com/code/view/8500/