C# 串口通信断线重连

以下是C#串口通信断线重连的示例代码：

using System.IO.Ports;
using System.Threading;

public class SerialPortManager
{
    private SerialPort serialPort;
    private Thread reconnectThread;
    private bool isReconnecting = false;

    public SerialPortManager(string portName, int baudRate)
    {
        serialPort = new SerialPort(portName, baudRate);
        serialPort.DataReceived += SerialPort_DataReceived;
        serialPort.ErrorReceived += SerialPort_ErrorReceived;
        serialPort.Open();
        StartReconnectThread();
    }

    private void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
        // 处理接收到的数据
    }

    private void SerialPort_ErrorReceived(object sender, SerialErrorReceivedEventArgs e)
    {
        if (e.EventType == SerialError.RXOver || e.EventType == SerialError.Overrun || e.EventType == SerialError.Frame || e.EventType == SerialError.RXParity)
        {
            // 发生错误，断开连接
            serialPort.Close();
            isReconnecting = true;
        }
    }

    private void StartReconnectThread()
    {
        reconnectThread = new Thread(() =>
        {
            while (true)
            {
                if (isReconnecting)
                {
                    // 等待一段时间后重新连接
                    Thread.Sleep(5000);
                    try
                    {
                        serialPort.Open();
                        isReconnecting = false;
                    }
                    catch (Exception)
                    {
                        // 连接失败，继续等待
                    }
                }
                else
                {
                    // 检查连接状态
                    if (!serialPort.IsOpen)
                    {
                        isReconnecting = true;
                    }
                }
            }
        });
        reconnectThread.Start();
    }
}

该示例代码中，我们创建了一个`SerialPortManager`类来管理串口通信。在构造函数中，我们打开了串口并启动了一个重连线程。在重连线程中，我们不断检查串口连接状态，如果发现连接断开，则等待一段时间后尝试重新连接。在串口发生错误时，我们也会断开连接并标记需要重连。