linux python 串口

#!/usr/bin/env python

# encoding: utf-8
'''
# @Time    : 21-2-20
# @Author  : geoffery
# @Site    : 
# @File    : serialCom.py
# @Software: PyCharm

'''

import serial

class usbSerial(object):
    def __init__(self, port, bps, time):
        try:
            self.portx = port
            self.bps = bps
            # 超时设置,None：永远等待操作，0为立即返回请求结果，其他值为等待超时时间(单位为秒）
            self.timex = time
            self.ser = serial.Serial(self.portx, self.bps, timeout=self.timex)
            print("串口详情参数：", self.ser)
        except Exception as e:
            print("---异常---：", e)

    def send(self, data):
        try:
            self.d = bytes.fromhex(data)
            self.result = self.ser.write(self.d)
            print("写总字节数:", self.result)
        except Exception as e:
            print("---异常---：", e)

    def read(self, num):
        try:
            return self.ser.read(num).hex()
        except Exception as e:
            print("---异常---：", e)

    def close(self):
        try:
            self.ser.close()
        except Exception as e:
            print("---异常---：", e)


if __name__ == "__main__":
    uS = usbSerial("/dev/ttyUSB0", 9600, 1)
    uS.send('01 05 00 00 00 00 00 00')
    a = uS.read(8)
    print(a)
    uS.close()