python监听串口双方收发消息内容

使用说明

使用VSPD建立一组虚拟串口

查看MCU的端口号与波特率并修改python程序配置，运行即可看到双方收发的效果，相当于在MCU与上位机软件中间插入了一个监听双方通讯的打印程序

通过串口助手连接到虚拟串口并向其发送消息
即Python显示MCU端发给串口助手的消息，并显示串口助手发送至MCU的消息，中间使用VSPD与Python进行消息互转与打印。
应用场景：当需要分析设备与控制软件之间的收发命令时，通过VSPD与python在设备与控制软件中间架设一些列中间件来监听相互之间的消息
具体如下图示

Python监听串口收发双方程序

import serial
import threading
'''
通过监听MCU端与PC上位机软件的通讯，打印双方收发的消息

'''
# =============配置修改区==================
mcu_serial_config = {"MCU_serial": "COM19", "baud_rate": 115200}

vspd_serial_config = {"VSPD_A": "COM10", "VSPD_B": "COM11"}
# ↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑  配置修改区   ↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑


class SerialLog:

    def __init__(self, serial_config_dic, vspd_config=None):
        if vspd_config == None:
            vspd_config = {"VSPD_A": "COM10", "VSPD_B": "COM11"}

        self.mcu_serial_num = serial_config_dic["MCU_serial"]
        self.baud_rate = serial_config_dic["baud_rate"]

        self.mcu_serial = serial.Serial(self.mcu_serial_num, self.baud_rate)
        self.vspd_serial = serial.Serial(vspd_config["VSPD_A"], self.baud_rate)

        self.is_running = True

        # 创建两个线程
        try:
            thread1 = threading.Thread(target=self.listing_mcu)
            thread2 = threading.Thread(target=self.listing_vspd)
            thread1.start()
            thread2.start()
        except:
            print(f"Error: 无法启动线程\n")
        # 默认线程循环
        try:
            while 1:
                pass
        except KeyboardInterrupt as e:
            # 捕获按键取消(ctrl+c)异常,结束2个子线程
            self.is_running = False
            print("\nthread end")

# 监听MCU端串口信息

    def listing_mcu(self):
        try:
            while self.is_running:
                if not self.mcu_serial.isOpen():
                    continue
                data_size = self.mcu_serial.in_waiting
                if data_size < 1:
                    continue
                data = self.mcu_serial.read(data_size)
                print(f'MCU:{data}')
                self.vspd_serial.write(data)
        finally:
            print("\nmcu thread Done")


# 监听VSPD端串口信息

    def listing_vspd(self):
        try:
            while self.is_running:
                if not self.vspd_serial.isOpen():
                    continue
                data_size = self.vspd_serial.in_waiting
                if data_size < 1:
                    continue
                data = self.vspd_serial.read(data_size)
                print(f'VSPD:{data}')
                self.mcu_serial.write(data)
        finally:
            print("\nvspd thread Done")

if __name__ == '__main__':
    print('Begining')

    app = SerialLog(mcu_serial_config, vspd_serial_config)