把433M無線解碼器的USB串列埠插入到路由器USB口，預設會出現ttyUSB0串列埠裝置，python讀取串列埠資料程式碼如下

#!/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  
 

[email protected]:/tmp# ./serialread.py 
/dev/ttyUSB0
9600
{"type":"trigger", "addr":"0x5555","data":"0xc0"}