DIY个人智能家庭网关——python篇之读取USB串口，获取门磁报警信息

把433M无线解码器的USB串口插入到路由器USB口，默认会出现ttyUSB0串口设备，python读取串口数据代码如下

#!/usr/bin/env python# -*- coding: utf-8 -*- import serial  from time import sleep    ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=0.5)     PRint ser.port  print ser.baudrate    def recv(serial):      while True:        data =serial.read(64)        if data == '':          continue      else:        break      sleep(0.02)     return data     while True:      data =recv(ser)     if data != '':       print data  运行后，触发433M无线门磁，输出结果如下
root@OpenWrt:/tmp# ./serialread.py /dev/ttyUSB09600{"type":"trigger", "addr":"0x5555","data":"0xc0"}