开源·串口显示软件

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1. 看到网上有人做硬件显示的COM口。作为资深软件开发人员，觉得这点小事情，还要掏Money来实现，有点太LOW了。

2. 直接用Python代码实现，放在启动里面，插入或者移除USB的串口，都能够正确提示。

3. 闲话少说，直接上代码。

import sys,os
from PyQt5.QtWidgets import QApplication, QSystemTrayIcon, QMenu, QAction, QMessageBox
from PyQt5.QtGui import QIcon
from PyQt5.QtCore import QThread, pyqtSignal
from PyQt5.QtCore import QTimer
import serial.tools.list_ports

class USBMonitorThread(QThread):
    device_connected = pyqtSignal(str)
    device_disconnected = pyqtSignal(str)

    def run(self):
        prev_ports = set(serial.tools.list_ports.comports())
        while True:
            current_ports = set(serial.tools.list_ports.comports())
            new_ports = current_ports - prev_ports
            removed_ports = prev_ports - current_ports

            for port in new_ports:
                self.device_connected.emit(port.device)
            for port in removed_ports:
                self.device_disconnected.emit(port.device)

            prev_ports = current_ports
            self.msleep(1000)  # 每秒检查一次

class SystemTrayIcon(QSystemTrayIcon):
    def __init__(self, icon, parent=None):
        super(SystemTrayIcon, self).__init__(icon, parent)
        self.setToolTip("USB Monitor")

        self.create_menu()
        self.USB_thread = USBMonitorThread()
        self.USB_thread.device_connected.connect(self.show_connected_notification)
        self.USB_thread.device_disconnected.connect(self.show_disconnected_notification)
        self.USB_thread.start()

    def create_menu(self):
        menu = QMenu()
        exitAction = QAction("退出", self)
        exitAction.triggered.connect(sys.exit)
        menu.addAction(exitAction)
        self.setContextMenu(menu)

    def show_connected_notification(self, port_name):
        message = f"新USB设备已连接: {port_name}"
        self.show_notification_message(message)

    def show_disconnected_notification(self, port_name):
        message = f"USB设备已移除: {port_name}"
        self.show_notification_message(message)

    def show_notification_message(self, message, timeout=5000):  # 假设5秒后关闭
        msg_box = QMessageBox(QMessageBox.Information, "USB设备通知", message)
        timer = QTimer()
        timer.singleShot(timeout, msg_box.close)  # 在timeout毫秒后关闭消息框
        msg_box.exec_()

if __name__ == '__main__':
    app = QApplication(sys.argv)
    # icon = QIcon("3GP.ico")  # 替换为你的ICO文件路径
    tray_icon = SystemTrayIcon(QIcon('app3_icon.ico'))
    tray_icon.show()

    while True:  # 添加无限循环
        app.exec_()