Python 串口读写实现

Python 串口读写实现

1.安装pyserial

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