python实现控制COM口的示例
时间：2020-12-19 10:07:59|栏目：Python代码|点击： 次
使用RS232串口线或者是RS232转USB的这一类的接口，会需要com口作为接口来进行输入输出调式，
写了个脚本来控制COM口，用到了Python内建的serial库
代码如下：
# coding=utf-8
import serial
import time
def setTout(t):
print "Old Timeout is:[%s]" % po1.getTimeout()
po1.setTimeout(t)
print "New Timeout is:[%s]" % po1.getTimeout()
def sendShell(sp,cmd):
sp.write(cmd+"\n")
print "send shell cmd:[%s]" % cmd
str = sp.readall()
return str
def shell_io(sp,cmd,sleepTime):
str = sendShell(sp,cmd)
print str
time.sleep(sleepTime)
po1 = serial.Serial('com1',115200)
timeStart = time.time()
portnow = po1.portstr
print "COM port now is:[%s]" % portnow
setTout(5)
shell_io(po1,"ls",2)
shell_io(po1,"pwd",2)
shell_io(po1,"ls -l",2)
po1.close()
