C# 串口通讯 断线重连

以下是C#串口通讯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();
    }

    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，断开连接并尝试重新连接
            Reconnect();
        }
    }

    private void Reconnect()
    {
        if (isReconnecting)
        {
            return;
        }

        isReconnecting = true;

        // 关闭串口
        serialPort.Close();

        // 开启重连线程
        reconnectThread = new Thread(() =>
        {
            while (true)
            {
                try
                {
                    // 尝试重新连接
                    serialPort.Open();

                    // 重新连接成功，退出重连线程
                    isReconnecting = false;
                    break;
                }
                catch
                {
                    // 重新连接失败，等待一段时间后继续尝试
                    Thread.Sleep(1000);
                }
            }
        });
        reconnectThread.Start();
    }
}

该示例代码中，SerialPortManager类封装了串口通讯的相关操作，包括初始化串口、处理接收到的数据、处理错误事件、断线重连等。当发生错误事件时，会调用Reconnect方法进行断线重连，该方法会关闭串口并开启一个新的线程进行重连操作，直到重连成功为止。