串口数据发送代码,CSharp代码库,德仔网

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【CSharp】串口数据发送

作者:aha2013 / 发布于2013/10/23/ 486

C#串口数据发送


	/// <summary>
	 /// 数据发送
	 /// </summary>
	 /// <param name="data">要发送的数据字节</param>
	 public void SendData(byte[] data)
	 {
	 try
	 {
	 serialPort.DiscardInBuffer();
	 serialPort.Write(data, 0, data.Length);
	 }
	 catch (Exception ex)
	 {
	 throw ex;
	 }
	 }

	 /// <summary>
	 /// 发送命令
	 /// </summary>
	 /// <param name="SendData">发送数据</param>
	 /// <param name="ReceiveData">接收数据</param>
	 /// <param name="Overtime">超时时间</param>
	 /// <returns></returns>
	 public int SendCommand(byte[] SendData, ref byte[] ReceiveData, int Overtime)
	 {
	 if (serialPort.IsOpen)
	 {
	 try
	 {
	 ReceiveEventFlag = true; //关闭接收事件
	 serialPort.DiscardInBuffer(); //清空接收缓冲区
	 serialPort.Write(SendData, 0, SendData.Length);
	 System.Threading.Thread.Sleep(50);
	 int num = 0, ret = 0;
	 while (num++ < Overtime)
	 {
	 if (serialPort.BytesToRead >= ReceiveData.Length)
	 {
	 break;
	 }
	 System.Threading.Thread.Sleep(50);
	 }
	 if (serialPort.BytesToRead >= ReceiveData.Length)
	 {
	 ret = serialPort.Read(ReceiveData, 0, ReceiveData.Length);
	 }
	 else
	 {
	 ret = serialPort.Read(ReceiveData, 0, serialPort.BytesToRead);
	 }
	 ReceiveEventFlag = false; //打开事件
	 return ret;
	 }
	 catch (Exception ex)
	 {
	 ReceiveEventFlag = false;
	 throw ex;
	 }
	 }
	 return -1;
	 }

	 ///<summary>
	 ///数据发送
	 ///</summary>
	 ///<param name="data">要发送的数据字符串</param>
	 public void SendData(string data)
	 {
	 //禁止接收事件时直接退出
	 if (ReceiveEventFlag)
	 {
	 return;
	 }
	 if (serialPort.IsOpen)
	 {
	 serialPort.Write(data);
	 }
	 }

	 ///<summary>
	 ///将指定数量的字节写入输出缓冲区中的指定偏移量处。
	 ///</summary>
	 ///<param name="data">发送的字节数据</param>
	 ///<param name="offset">写入偏移量</param>
	 ///<param name="count">写入的字节数</param>
	 public void SendData(byte[] data, int offset, int count)
	 {
	 //禁止接收事件时直接退出
	 if (ReceiveEventFlag)
	 {
	 return;
	 }
	 if (serialPort.IsOpen)
	 {
	 serialPort.Write(data, offset, count);
	 }
	 }

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