Python 自动选择串口(适用于 Arduino)

2022-01-18 00:00:00 python python-2.7 pyserial arduino serial-port

问题描述

目前，python 程序必须知道设备 (Arduino) 在哪个端口上，然后 Python 才能与设备通信.

Currently the python program must know which port a device (Arduino) is on before Python can communicate the device.

问题:每当设备被拔出和重新插入时，它的 COM 端口都会改变，因此必须再次将正确的串行端口提供给 Python 才能找到设备.

Problem: Whenever the device is plugged out and back in, its COM port changes, so the correct serial port must be given to Python again for it to find the device.

Python(使用pySerial)如何自动搜索要使用的正确串口?python是否可以正确地将串口上的设备识别为Arduino?

How can Python (using pySerial) automatically search for the correct serial port to use? Is it possible for python to correctly identify the device on a serial port as an Arduino?

解决方案

使用以下代码查看所有可用的串口:

Use the following code to see all the available serial ports:

import serial.tools.list_ports
ports = list(serial.tools.list_ports.comports())
for p in ports:
    print p

这给了我以下信息:

('COM4', 'Arduino Due Programming Port (COM4)', 'USB VID:PID=2341:003D SNR=75330303035351300230')
('COM11', 'RS-232 Port (COM11)', 'FTDIBUS\VID_0856+PID_AC27+BBOPYNPPA\0000')

要确定它是否是 Arduino，您可以执行以下操作:

To work out if it's an Arduino you could do something like:

    if "Arduino" in p.description:
        print "This is an Arduino!"

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