1.沒有實體串口情況下可以使用虛擬串口,運行一下python腳本
#! /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 'virtual_com 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)
if master==master1:
print "-->read %d data:" % len(data)
print data
#os.write(master2, data)
else:
print "-->to write %d data:" % len(data)
print data.strip()
os.write(master1, data.strip())