C#实现串口通信都有哪些方法？

[duoxiangliuti]

以前一直用的C++做通信，用起来还比较方便，最近有个项目打算用C#，不知道跟用C++做通信区别大不，都有哪些方法，跟C++相比是不是要复杂很多。

[yang1216]

SerialPort类。

[cy757]

我博客上有相关资料
http://blog.csdn.net/cy757/archive/2009/08/23/4474930.aspx

[暮天逸]

using System;
using System.Linq;
using System.Text;
using System.IO.Ports;
using System.Threading;
using System.Collections.Generic;

namespace HFAirport.AWOSMonitor.SocketService
{

  
    //public delegate void SendDataCallBackHandler(byte[] readbuffer);
  public  class MonitorHelper
    {

      public static readonly  MonitorHelper Instance = new MonitorHelper();
      private SerialPort _serialPort;
      //发送数据（委托）
      //public SendDataCallBackHandler SendDataCallBack;
      byte[] receiveBuffer;
      /// <summary>
      /// receiveBuff
      /// </summary>
      /// <param name="portName">串口名</param>
      /// <param name="baudRate">波特率</param>
      /// <param name="dataBits">数据位</param>
      public void OpenPort(string portName, int baudRate, int dataBits)
      {
          OpenPort(portName, baudRate, Parity.None, dataBits, StopBits.One);
      }

      /// <summary>
      /// 打开串口
      /// </summary>
      /// <param name="portName">串口名</param>
      /// <param name="baudRate">波特率</param>
      /// <param name="parity">校验</param>
      /// <param name="dataBits">数据位</param>
      /// <param name="stopBits">停止位</param>
      public void OpenPort(string portName, int baudRate, Parity parity, int dataBits, StopBits stopBits)
      {
          _serialPort = new SerialPort(portName, baudRate, parity, dataBits, stopBits);

          if (_serialPort != null)
          {
              _serialPort.Open();
              _serialPort.DataReceived += new SerialDataReceivedEventHandler(_serialPort_DataReceived);
          }
      }

      /// <summary>
      /// 关闭串口
      /// </summary>
      public void ClosePort()
      {
          _serialPort.DataReceived -= _serialPort_DataReceived;
          _serialPort.Close();
          _serialPort.Dispose();
          _serialPort = null;
      }

      /// <summary>
      /// 串口触发的数据接收事件
      /// </summary>
      /// <param name="sender"></param>
      /// <param name="e"></param>
      private void _serialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
      {
          Thread.Sleep(1000);
          receiveBuffer = new byte[_serialPort.BytesToRead];
          _serialPort.Read(receiveBuffer, 0, _serialPort.BytesToRead);

          //if (SendDataCallBack != null)
          //{
          //    SendDataCallBack(receiveBuff);
          //}
      }

      /// <summary>
      /// 发送数据,返回读取的返回字节数组
      /// </summary>
      /// <param name="bytes"></param>
      public void PowerOn()
      {
          List<byte> receivedList = new List<byte>();
          byte[] writeBuffer = new byte[5];
          writeBuffer[0] = 0x01;
          writeBuffer[1] = Convert.ToByte('0');
          writeBuffer[2] = Convert.ToByte('1');
          writeBuffer[3] = Convert.ToByte('D');
          writeBuffer[4] = 0x03;
          
          _serialPort.Write(writeBuffer, 0, writeBuffer.Length);
          Thread.Sleep(200);

      }

      public List<byte> GetData()
      {
          List<byte> receivedList = new List<byte>();
          for (int j = 0; j < 3; j++)
          {
              if (receiveBuffer != null)
              {
                  for (int i = 0; i < receiveBuffer.Length; i++)
                  {
                      receivedList.Add(receiveBuffer[i]);

                    
                  }
                  break;
              }
          }
          receiveBuffer = null;
          return receivedList;
      }


      public void sendData(byte[] sendBuff)
      {

          _serialPort.Write(sendBuff, 0, sendBuff.Length);
         
      }

      /// <summary>
      /// 关闭电源
      /// </summary>
      public void ClosePower()
      {
   
          byte[] writeBuffer = new byte[7];
          writeBuffer[0] = 0x01;
          writeBuffer[1] = Convert.ToByte('0');
          writeBuffer[2] = Convert.ToByte('1');
          writeBuffer[3] = Convert.ToByte('G');
          writeBuffer[4] = Convert.ToByte('0');
          writeBuffer[5] = Convert.ToByte('1');
          writeBuffer[6] = 0x03;
          _serialPort.Write(writeBuffer, 0, writeBuffer.Length);
          Thread.Sleep(200);
      }

      /// <summary>
      /// 开启电源
      /// </summary>
      public void OpenPower()
      {
       
          byte[] writeBuffer = new byte[7];
          writeBuffer[0] = 0x01;
          writeBuffer[1] = Convert.ToByte('0');
          writeBuffer[2] = Convert.ToByte('1');
          writeBuffer[3] = Convert.ToByte('K');
          writeBuffer[4] = Convert.ToByte('0');
          writeBuffer[5] = Convert.ToByte('2');
          writeBuffer[6] = 0x03;
          _serialPort.Write(writeBuffer, 0, writeBuffer.Length);
          //Thread.Sleep(200);
      }
      /// <summary>
      /// 关闭空调
      /// </summary>
      public void CloseAirconditioning()
      {
         
          byte[] writeBuffer = new byte[7];
          writeBuffer[0] = 0x01;
          writeBuffer[1] = Convert.ToByte('0');
          writeBuffer[2] = Convert.ToByte('1');
          writeBuffer[3] = Convert.ToByte('G');
          writeBuffer[4] = Convert.ToByte('0');
          writeBuffer[5] = Convert.ToByte('2');
          writeBuffer[6] = 0x03;
          _serialPort.Write(writeBuffer, 0, writeBuffer.Length);
          Thread.Sleep(200);
      }
      /// <summary>
      /// 开启空调
      /// </summary>
      public void OpenAirconditioning()
      {
          
          byte[] writeBuffer = new byte[7];
          writeBuffer[0] = 0x01;
          writeBuffer[1] = Convert.ToByte('0');
          writeBuffer[2] = Convert.ToByte('1');
          writeBuffer[3] = Convert.ToByte('K');
          writeBuffer[4] = Convert.ToByte('0');
          writeBuffer[5] = Convert.ToByte('2');
          writeBuffer[6] = 0x03;
          _serialPort.Write(writeBuffer, 0, writeBuffer.Length);
          Thread.Sleep(200);
      }






      /// <summary>
      /// 写参数
      /// </summary>
      /// <param name="ParameterNo"></param>
      /// <param name="ParameterValue"></param>
      public List<int> WriteParameter(string ParameterNo, string ParameterValue)
      {
       
          List<int> receivedList = new List<int>();

          byte[] No = Encoding.ASCII.GetBytes(ParameterNo);
          byte[] Value = Encoding.ASCII.GetBytes(ParameterValue);
          byte[] writeBuffer = new byte[9];
          writeBuffer[0] = 0x01;
          writeBuffer[1] = Convert.ToByte('0');
          writeBuffer[2] = Convert.ToByte('1');
          writeBuffer[3] = Convert.ToByte('X');
          writeBuffer[4] = No[0];
          writeBuffer[5] = No[1];
          writeBuffer[6] = Value[0];
          writeBuffer[7] = Value[1];
          writeBuffer[8] = 0x03;


          ////SendDataCallBack += new SendDataCallBackHandler((recievedBuffer) =>
          //{
          //    for (int i = 0; i < recievedBuffer.Length; i++)
          //    {
          //        receivedList.Add(Convert.ToInt32(recievedBuffer[i].ToString("X2"), 16));
          //    }

          //});
          _serialPort.Write(writeBuffer, 0, writeBuffer.Length);

          if (receivedList == null)
          {
              Thread.Sleep(300);
          }
        
          return receivedList;


      }


    }
}