Python使用pyserial进行串口通信

安装pyserial

pip install pyserial

查看可用的端口

# coding:utf-8

import serial.tools.list_ports

plist = list(serial.tools.list_ports.comports())

if len(plist) <= 0:
    print("没有发现端口!")
else:
    plist_0 = list(plist[0])
    serialName = plist_0[0]
    serialFd = serial.Serial(serialName, 9600, timeout=60)
    print("可用端口名>>>", serialFd.name)

所发十六进制需转换为以下格式

# 所发十六进制字符串010591F50000F104
cmd = [0x01, 0x05, 0x91, 0xF5, 0x00, 0x00, 0xF1, 0x04]

串口通信
Windows下端口为COM*, Ubuntu下为/dev/ttyS0

import serial

class Ser(object):
    def __init__(self):
        # 打开端口
        self.port = serial.Serial(port='COM4', baudrate=9600, bytesize=8, parity='E', stopbits=1, timeout=2)

    # 发送指令的完整流程
    def send_cmd(self, cmd):
        self.port.write(cmd)
        response = self.port.readall()
        response = self.convert_hex(response)
        return response

    # 转成16进制的函数
    def convert_hex(self, string):
        res = []
        result = []
        for item in string:
            res.append(item)
        for i in res:
            result.append(hex(i))
        return result