Python 串口读写实现

#Python 串口读写实现

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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

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