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using System;
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using System.Collections.Generic;
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using System.IO.Ports;
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using System.Text;
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using System.Threading;
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#region << 版 本 注 释 >>
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/*--------------------------------------------------------------------
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* 版权所有 (c) 2025 WenJY 保留所有权利。
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* CLR版本：4.0.30319.42000
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* 机器名称：T14-GEN3-7895
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* 命名空间：SlnMesnac.Business
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* 唯一标识：a0333022-6db6-4dd1-8aa7-bc46b57b6050
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*
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* 创建者：WenJY
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* 电子邮箱：
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* 创建时间：2025-06-23 13:50:07
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* 版本：V1.0.0
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* 描述：
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*
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*--------------------------------------------------------------------
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* 修改人：
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* 时间：
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* 修改说明：
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*
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* 版本：V1.0.0
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*--------------------------------------------------------------------*/
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#endregion << 版 本 注 释 >>
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namespace SlnMesnac.Business
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{
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public class SerialBusiness
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{
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private SerialPort serialPort;
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public SerialBusiness()
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{
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serialPort = new SerialPort("COM6", 115200, Parity.None, 8, StopBits.One);
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//serialPort.DataReceived += SerialPort_DataReceived;
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}
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private void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
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{
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// 数据接收事件处理
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// 这里可以根据需要处理接收到的数据
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}
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public void OpenPort()
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{
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try
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{
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if (!serialPort.IsOpen)
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{
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serialPort.Open();
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}
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}
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catch (Exception ex)
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{
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Console.WriteLine($"打开串口时出错: {ex.Message}");
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}
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}
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public void ClosePort()
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{
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if (serialPort.IsOpen)
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{
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serialPort.Close();
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}
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}
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private byte[] receiveBuffer = new byte[1024];
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private int bufferIndex = 0;
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public byte[] SendDataAndWaitForResponse(byte[] dataToSend)
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{
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if (!serialPort.IsOpen)
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{
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throw new InvalidOperationException("串口未打开。");
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}
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// 清空接收缓冲区
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serialPort.DiscardInBuffer();
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bufferIndex = 0;
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byte[] receivedData = new byte[0];
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AutoResetEvent dataReceivedEvent = new AutoResetEvent(false);
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serialPort.DataReceived += (sender, e) =>
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{
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int bytesToRead = serialPort.BytesToRead;
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serialPort.Read(receiveBuffer, bufferIndex, bytesToRead);
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bufferIndex += bytesToRead;
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if (bufferIndex >= 5)
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{
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receivedData = new byte[bufferIndex];
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Array.Copy(receiveBuffer, receivedData, bufferIndex);
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dataReceivedEvent.Set();
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}
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};
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try
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{
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// 发送数据
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serialPort.Write(dataToSend, 0, dataToSend.Length);
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// 等待数据返回，最多等待 5 秒
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if (!dataReceivedEvent.WaitOne(5000))
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{
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throw new TimeoutException("在 5 秒内未收到响应。");
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}
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return receivedData;
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}
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finally
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{
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// 移除事件处理程序
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serialPort.DataReceived -= (sender, e) =>
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{
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int bytesToRead = serialPort.BytesToRead;
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serialPort.Read(receiveBuffer, bufferIndex, bytesToRead);
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bufferIndex += bytesToRead;
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if (bufferIndex >= 10)
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{
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receivedData = new byte[bufferIndex];
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Array.Copy(receiveBuffer, receivedData, bufferIndex);
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dataReceivedEvent.Set();
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}
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};
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}
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}
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}
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}
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