Python 串口读写的实现方法

1.安装pyserial

https://pypi.python.org/pypi/pyserial

Doc:http://pythonhosted.org/pyserial/

使用Python Package Index (PyPi)

pip install pyserial-3.1.1-py2.py3-none-any.whl

2. Demo

import serial
from time import sleep

def recv(serial):
 while True:
   data = serial.read_all()
   if data == '':
     continue
   else:
     break
   sleep(0.02)
 return data

if __name__ == '__main__':
 serial = serial.Serial('COM5', 9600, timeout=0.5) #/dev/ttyUSB0
 if serial.isOpen() :
   print("open success")
 else :
   print("open failed")

while True:
   data =recv(serial)
   if data != b'' :
     print("receive : ",data)
     serial.write(data) #数据写回

3.结果

来源：https://blog.csdn.net/itas109/article/details/78874165