C#读取COM口的信号（没用Serialport组件）来完成PC机和硬件的通信

public static class ComPort//
    {
        public static Queue ByteList = Queue.Synchronized(new Queue());
        public static int JsByteSum = 0;
        public static int FsByteSum = 0;
        public static bool IsGroup = false;
        public static int OneGroupSum = 16;
        public static bool IsOpenCom
        {
            get
            {
                if (aSerialPor == null)
                    return false;

                return aSerialPor.IsOpen;
            }
        }
        public static string ErrMsg
        {
            get { return aErrMsg; }
        }

        private static SerialPort aSerialPor = null;
        private static string aErrMsg = "";
        //private static C_Order aBuilderOrder = new C_Order();
        private static ComPortInfo aComInfo;

        public static void InitComPort(ComPortInfo ComSet)
        {
            aComInfo = ComSet;
            aSerialPor = new SerialPort();
            aSerialPor.BaudRate = ComSet.PortBaudRate;
            aSerialPor.DataBits = 8;
            aSerialPor.StopBits = StopBits.One;
            aSerialPor.Parity = Parity.None;
            aSerialPor.PortName = ComSet.PortName;
        }

        private static void InitComPort()
        {
            if (aSerialPor != null)
                ColseCom();

            aSerialPor = new SerialPort();
            aSerialPor.BaudRate = aComInfo.PortBaudRate;
            aSerialPor.DataBits = 8;
            aSerialPor.StopBits = StopBits.One;
            aSerialPor.Parity = Parity.None;
            aSerialPor.PortName = aComInfo.PortName;
        }

        public static bool OpenCom()
        {
            if (aSerialPor == null)
            {
                aErrMsg = "未初始化的COM对象！";
                return false;
            }

            try
            {
                aSerialPor.DataReceived += new SerialDataReceivedEventHandler(aSerialPor_DataReceived);

                aSerialPor.Open();
                JsByteSum = 0;
            }
            catch (Exception Err)
            {
                aErrMsg = Err.Message;
                return false;
            }
            return true;
        }

        public static bool ColseCom()
        {
            ByteList.Clear();

            try
            {
                if (aSerialPor != null)
                {
                    aSerialPor.DiscardInBuffer();
                    aSerialPor.DiscardOutBuffer();
                    aSerialPor.Close();
                    aSerialPor.Dispose();
                    aSerialPor = null;
                }
            }
            catch (Exception Err)
            {
                MessageBox.Show(Err.Message, "提示");
            }

            return true;
        }

        public static bool ComSetData(byte[] SetData)
        {
            if (aSerialPor == null)
            {
                aErrMsg = "未初始化COM对象";
                return false;
            }
            if (aSerialPor.IsOpen == false)
            {
                aErrMsg = "未打开的COM对象";
                return false;
            }

            aSerialPor.DiscardOutBuffer();

            try
            {
                aSerialPor.Write(SetData, 0, SetData.Length);
                FsByteSum += SetData.Length;
            }
            catch (Exception Err)
            {
                aErrMsg = Err.Message;
                return false;
            }
            return true;
        }

        public static bool ClearDataBuffer()
        {
            if (aSerialPor == null)
                return true;
            if (aSerialPor.IsOpen == false)
                return true;

            try
            {
                aSerialPor.DiscardInBuffer();
            }
            catch (Exception Err)
            {
                aErrMsg = Err.Message;
                return false;
            }

            return true;
        }

        private static void aSerialPor_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            int iByteLen = aSerialPor.BytesToRead;

            byte[] iBytes;
            if (IsGroup)
            {
                int iGroup = iByteLen / OneGroupSum;
                for (int i = 0; i < iGroup; i++)
                {
                    iBytes = new byte[OneGroupSum];
                    aSerialPor.Read(iBytes, 0, OneGroupSum);
                    JsByteSum += OneGroupSum;
                    ByteList.Enqueue(iBytes);
                }
            }
            else
            {
                iBytes = new byte[iByteLen];
                aSerialPor.Read(iBytes, 0, iByteLen);
                JsByteSum += iByteLen;
                ByteList.Enqueue(iBytes);
            }
        }

    }

    public class ComPortInfo
    {
        public string PortName = "COM1";
        public int PortBaudRate = 9600;
        public int InoupSize = 5120;
        public int OutPutSize = 1024;
        public int DataBits = 8;
        public StopBits ComStopBits = StopBits.One;
        public Parity ComParity = Parity.None;
    }
}

下面是调用ComPort对象的方法

我是用了一个窗体来显示效果的

读的是两对红外传给电脑的信号

QQ截图20110920095642

StringBuilder aBytesStr = new StringBuilder();
      Regex aStrReg = new Regex("[^A-F0-9]");

      private void btn_Com_Click(object sender, EventArgs e)
      {
          if (btn_Com.Text == "打开串口")
          {
              if (CheckInfo() == false)
                  return;

              ComPortInfo iComInfo = new ComPortInfo();

              int iComBtl = 19200;
              Parity iComJyw = Parity.Odd;
              int iComDataBit = 8;
              StopBits iComStopBits = StopBits.One;

              iComInfo.PortName = "COM4";
              iComInfo.ComParity = iComJyw;
              iComInfo.ComStopBits = iComStopBits;
              iComInfo.InoupSize = 5120;
              iComInfo.OutPutSize = 1024;
              iComInfo.PortBaudRate = iComBtl;
              iComInfo.DataBits = iComDataBit;

              ComPort.InitComPort(iComInfo);
              if (ComPort.OpenCom() == false)
              {
                  MessageBox.Show("打开串口出错！\n" + C_ComPort.ErrMsg, "提示");
                  return;
              }

              this.btn_Com.Text = "关闭串口";
              timer_Ret.Start();
          }
          else if (btn_Com.Text == "关闭串口")
          {
              ComPort.ColseCom();
              this.btn_Com.Text = "打开串口";
              timer_Ret.Stop();
          }

      }
      private bool CheckInfo()
      {
          return true;
      }

      private void timer_Ret_Tick(object sender, EventArgs e)
      {
          if (ComPort.ByteList.Count <= 0)
              return;

          byte[] iBytes = (byte[])ComPort.ByteList.Dequeue();
          OrderStr(iBytes);
      }

      private void OrderStr(byte[] OrderByte)
      {
          string lib1 = "";
          //string lib2 = "";
          for (int i = 4; i < OrderByte.Length; i++)
          {
              if (!("FF".Equals(OrderByte[i].ToString("X").PadLeft(2, '0'))))
              {
                  aBytesStr.Append(OrderByte[i].ToString("X").PadLeft(2, '0') + " ");
              }
          } 
          aBytesStr.AppendLine(); 
          txt_Ret.Text += aBytesStr.ToString();
          lab_Jszjs.Text = ComPort.JsByteSum.ToString();//显示接收数
          lib1 = aBytesStr.ToString();
          if(lib1.Length>2)
          {
              this.lab1h.Text = lib1.Substring(0, 2).Trim();//第一组数据
              this.lab2h.Text = (lib1.Substring(5, 4)).Trim();//第二组数据
              this.lab3h.Text = lib1.Length+"";
          }
          txt_Ret.SelectionStart = txt_Ret.Text.Length;
          txt_Ret.ScrollToCaret();
          aBytesStr.Remove(0, aBytesStr.Length);

      }

先创建一个XX.cs类,来初始化COM对象，详细代码如下：

如果要用在其他地方可做一方法。

如果有什么不对的地方请朋友们多多指教！