python wxwidgets 串口通信GUI 完整代码

Python 中使用 `wxWidgets` 创建一个串口通信的 GUI，需要结合 `pySerial` 库来实现串口交互。下面是一个简单的示例代码，展示了一个窗口，用户可以选择串口号和波特率，然后可以发送和接收串口数据：

import wx
from pyserial import Serial

class MyFrame(wx.Frame):
    def __init__(self, parent=None):
        super().__init__(parent, title="Python Serial GUI", size=(400, 300))

        self.serial = None

        # 初始化串口选择面板
        serial_panel = wx.Panel(self)
        serial_box_sizer = wx.BoxSizer(wx.VERTICAL)

        self.combo_port = wx.ComboBox(serial_panel, choices=Serial().list_ports(), style=wx.CB_READONLY)
        self.text_ctrl_baudrate = wx.TextCtrl(serial_panel, value="9600")

        send_button = wx.Button(serial_panel, label="Send")
        receive_button = wx.Button(serial_panel, label="Receive")

        serial_box_sizer.Add(self.combo_port, proportion=1, flag=wx.EXPAND)
        serial_box_sizer.Add(wx.StaticText(serial_panel, label="Baud Rate"), flag=wx.LEFT, border=5)
        serial_box_sizer.Add(self.text_ctrl_baudrate, flag=wx.EXPAND)
        serial_box_sizer.Add(send_button, flag=wx.ALL, border=5)
        serial_box_sizer.Add(receive_button, flag=wx.ALL, border=5)

        serial_panel.SetSizer(serial_box_sizer)

        # 发送按钮事件处理器
        def on_send_click(event):
            baud_rate = int(self.text_ctrl_baudrate.GetValue())
            try:
                self.connect_serial(baud_rate)
                self.send_data("Hello from GUI!")
            except Exception as e:
                wx.MessageBox(str(e), "Error", wx.OK | wx.ICON_ERROR)

        send_button.Bind(wx.EVT_BUTTON, on_send_click)

        # 接收数据处理
        def on_receive_click(event):
            try:
                data = self.receive_data()
                wx.MessageBox(f"Received data: {data}", "Message", wx.OK)
            except Exception as e:
                wx.MessageBox(str(e), "Error", wx.OK | wx.ICON_ERROR)

        receive_button.Bind(wx.EVT_BUTTON, on_receive_click)

    def connect_serial(self, baud_rate):
        self.serial = Serial(port=self.combo_port.GetStringSelection(), baudrate=baud_rate)
        self.serial.timeout = 1  # 设置超时时间，防止阻塞

    def send_data(self, data):
        if self.serial:
            self.serial.write(data.encode('utf-8'))
            print(f"Sent: {data}")

    def receive_data(self):
        if self.serial:
            response = self.serial.read_until(b'\r\n')  # 假设数据是以换行符分隔
            return response.decode().strip()

if __name__ == "__main__":
    app = wx.App()
    frame = MyFrame()
    frame.Show(True)
    app.MainLoop()

这个例子中，我们创建了两个按钮，当点击“Send”按钮时会连接到选定的串口并发送数据，点击“Receive”按钮则尝试从串口读取数据。注意实际使用时需要对异常情况进行处理。