using System;
using System.Runtime.InteropServices;

namespace vjsdn.Tester
{ 
   public class CommLib
   {
      public CommLib()
      {
      }
      public int PortNum; //1,2,3,4
      public int BaudRate; //1200,2400,4800,9600
      public byte ByteSize; //8 bits
      public byte Parity; // 0-4=no,odd,even,mark,space
      public byte StopBits; // 0,1,2 = 1, 1.5, 2
      public int ReadTimeout; //10
      
      //comm port win32 file handle
      private int hComm = -1;
      
      public bool Opened = false;
      
      //win32 api constants
      private const uint GENERIC_READ = 0x80000000;
      private const uint GENERIC_WRITE = 0x40000000;
      private const int OPEN_EXISTING = 3;
      private const int INVALID_HANDLE_VALUE = -1;
      
      [StructLayout(LayoutKind.Sequential)]
      private struct DCB
      {
         //taken from c struct in platform sdk
         public int DCBlength; // sizeof(DCB)
         public int BaudRate; // current baud rate
         public int fBinary; // binary mode, no EOF check
         public int fParity; // enable parity checking
         public int fOutxCtsFlow; // CTS output flow control
         public int fOutxDsrFlow; // DSR output flow control
         public int fDtrControl; // DTR flow control type
         public int fDsrSensitivity; // DSR sensitivity
         public int fTXContinueOnXoff; // XOFF continues Tx
         public int fOutX; // XON/XOFF out flow control
         public int fInX; // XON/XOFF in flow control
         public int fErrorChar; // enable error replacement
         public int fNull; // enable null stripping
         public int fRtsControl; // RTS flow control
         public int fAbortOnError; // abort on error
         public int fDummy2; // reserved
         public ushort wReserved; // not currently used
         public ushort XonLim; // transmit XON threshold
         public ushort XoffLim; // transmit XOFF threshold
         public byte ByteSize; // number of bits/byte, 4-8
         public byte Parity; // 0-4=no,odd,even,mark,space
         public byte StopBits; // 0,1,2 = 1, 1.5, 2
         public char XonChar; // Tx and Rx XON character
         public char XoffChar; // Tx and Rx XOFF character
         public char ErrorChar; // error replacement character
         public char EofChar; // end of input character
         public char EvtChar; // received event character
         public ushort wReserved1; // reserved; do not use
      }
      
      [StructLayout(LayoutKind.Sequential)]
      private struct COMMTIMEOUTS
      {
         public int ReadIntervalTimeout;
         public int ReadTotalTimeoutMultiplier;
         public int ReadTotalTimeoutConstant;
         public int WriteTotalTimeoutMultiplier;
         public int WriteTotalTimeoutConstant;
      }
      
      [StructLayout(LayoutKind.Sequential)]
      private struct OVERLAPPED
      {
         public int Internal;
         public int InternalHigh;
         public int Offset;
         public int OffsetHigh;
         public int hEvent;
      }
      
      [DllImport("kernel32.dll")]
      private static extern int CreateFile(
      string lpFileName, // file name
      uint dwDesiredAccess, // access mode
      int dwShareMode, // share mode
      int lpSecurityAttributes, // SD
      int dwCreationDisposition, // how to create
      int dwFlagsAndAttributes, // file attributes
      int hTemplateFile // handle to template file
      );
      [DllImport("kernel32.dll")]
      private static extern bool GetCommState(
      int hFile, // handle to communications device
      ref DCB lpDCB // device-control block
      );
      [DllImport("kernel32.dll")]
      private static extern bool BuildCommDCB(
      string lpDef, // device-control string
      ref DCB lpDCB // device-control block
      );
      [DllImport("kernel32.dll")]
      private static extern bool SetCommState(
      int hFile, // handle to communications device
      ref DCB lpDCB // device-control block
      );
      [DllImport("kernel32.dll")]
      private static extern bool GetCommTimeouts(
      int hFile, // handle to comm device
      ref COMMTIMEOUTS lpCommTimeouts // time-out values
      );
      [DllImport("kernel32.dll")]
      private static extern bool SetCommTimeouts(
      int hFile, // handle to comm device
      ref COMMTIMEOUTS lpCommTimeouts // time-out values
      );
      [DllImport("kernel32.dll")]
      private static extern bool ReadFile(
      int hFile, // handle to file
      byte[] lpBuffer, // data buffer
      int nNumberOfBytesToRead, // number of bytes to read
      ref int lpNumberOfBytesRead, // number of bytes read
      ref OVERLAPPED lpOverlapped // overlapped buffer
      );
      [DllImport("kernel32.dll")]
      private static extern bool WriteFile(
      int hFile, // handle to file
      byte[] lpBuffer, // data buffer
      int nNumberOfBytesToWrite, // number of bytes to write
      ref int lpNumberOfBytesWritten, // number of bytes written
      ref OVERLAPPED lpOverlapped // overlapped buffer
      );
      [DllImport("kernel32.dll")]
      private static extern bool CloseHandle(
      int hObject // handle to object
      );
      
      public void Open()
      {
         DCB dcbCommPort = new DCB();
         COMMTIMEOUTS ctoCommPort = new COMMTIMEOUTS();
         
         // OPEN THE COMM PORT. 
         hComm = CreateFile("COM" + PortNum ,GENERIC_READ | GENERIC_WRITE,0, 0,OPEN_EXISTING,0,0);
         
         // IF THE PORT CANNOT BE OPENED, BAIL OUT.
         if(hComm == INVALID_HANDLE_VALUE)
         {
            throw(new ApplicationException("Comm Port Can Not Be Opened"));
         }
         
         // SET THE COMM TIMEOUTS. 
         GetCommTimeouts(hComm,ref ctoCommPort);
         ctoCommPort.ReadTotalTimeoutConstant = ReadTimeout;
         ctoCommPort.ReadTotalTimeoutMultiplier = 0;
         ctoCommPort.WriteTotalTimeoutMultiplier = 0;
         ctoCommPort.WriteTotalTimeoutConstant = 0;
         SetCommTimeouts(hComm,ref ctoCommPort);
         
         // SET BAUD RATE, PARITY, WORD SIZE, AND STOP BITS.
         // THERE ARE OTHER WAYS OF DOING SETTING THESE BUT THIS IS THE EASIEST.
         // IF YOU WANT TO LATER ADD CODE FOR OTHER BAUD RATES, REMEMBER
         // THAT THE ARGUMENT FOR BuildCommDCB MUST BE A POINTER TO A STRING.
         // ALSO NOTE THAT BuildCommDCB() DEFAULTS TO NO HANDSHAKING.
         
         dcbCommPort.DCBlength = Marshal.SizeOf(dcbCommPort);
         GetCommState(hComm, ref dcbCommPort);
         dcbCommPort.BaudRate=BaudRate;
         dcbCommPort.Parity=Parity;
         dcbCommPort.ByteSize=ByteSize;
         dcbCommPort.StopBits=StopBits;
         SetCommState(hComm, ref dcbCommPort);
         
         Opened = true;
         
      }
      
      public void Close()
      {
         if (hComm!=INVALID_HANDLE_VALUE)
         {
            CloseHandle(hComm);
            Opened=false;
         }
      }
      
      public byte[] Read(int NumBytes)
      {
         byte[] BufBytes;
         byte[] OutBytes;
         BufBytes = new byte[NumBytes];
         if (hComm!=INVALID_HANDLE_VALUE)
         {
            OVERLAPPED ovlCommPort = new OVERLAPPED();
            int BytesRead=0;
            ReadFile(hComm,BufBytes,NumBytes,ref BytesRead,ref ovlCommPort);
            OutBytes = new byte[BytesRead];
            Array.Copy(BufBytes,OutBytes,BytesRead);
         }
         else
         {
            throw(new ApplicationException("Comm Port Not Open"));
         }
         return OutBytes;
      }
      
      public int Write(byte[] WriteBytes)
      {
         int BytesWritten = 0;
         if (hComm!=INVALID_HANDLE_VALUE)
         {
            OVERLAPPED ovlCommPort = new OVERLAPPED();
            WriteFile(hComm,WriteBytes,WriteBytes.Length,ref BytesWritten,ref ovlCommPort);
         }
         else
         {
            throw(new ApplicationException("Comm Port Not Open"));
         }
         return BytesWritten;
      }
   }
}

using System;
using System.Runtime.InteropServices;

namespace JustinIO {
   class CommPort {
      
      public string PortNum;
      public int BaudRate;
      public byte ByteSize;
      public byte Parity; // 0-4=no,odd,even,mark,space
      public byte StopBits; // 0,1,2 = 1, 1.5, 2
      public int ReadTimeout;
      
      //comm port win32 file handle
      private int hComm = -1;
      
      public bool Opened = false;
      
      //win32 api constants
      private const uint GENERIC_READ = 0x80000000;
      private const uint GENERIC_WRITE = 0x40000000;
      private const int OPEN_EXISTING = 3;
      private const int INVALID_HANDLE_VALUE = -1;
      
      [StructLayout(LayoutKind.Sequential)]
      public struct DCB {
         //taken from c struct in platform sdk
         public int DCBlength; // sizeof(DCB)
         public int BaudRate; // 指定当前波特率 current baud rate
         // these are the c struct bit fields, bit twiddle flag to set
         public int fBinary; // 指定是否允许二进制模式,在windows95中必须主TRUE binary mode, no EOF check
         public int fParity; // 指定是否允许奇偶校验 enable parity checking
         public int fOutxCtsFlow; // 指定CTS是否用于检测发送控制，当为TRUE是CTS为OFF，发送将被挂起。 CTS output flow control
         public int fOutxDsrFlow; // 指定CTS是否用于检测发送控制 DSR output flow control
         public int fDtrControl; // DTR_CONTROL_DISABLE值将DTR置为OFF, DTR_CONTROL_ENABLE值将DTR置为ON, DTR_CONTROL_HANDSHAKE允许DTR"握手" DTR flow control type
         public int fDsrSensitivity; // 当该值为TRUE时DSR为OFF时接收的字节被忽略 DSR sensitivity
         public int fTXContinueOnXoff; // 指定当接收缓冲区已满,并且驱动程序已经发送出XoffChar字符时发送是否停止。TRUE时，在接收缓冲区接收到缓冲区已满的字节XoffLim且驱动程序已经发送出XoffChar字符中止接收字节之后，发送继续进行。　FALSE时，在接收缓冲区接收到代表缓冲区已空的字节XonChar且驱动程序已经发送出恢复发送的XonChar之后，发送继续进行。XOFF continues Tx
         public int fOutX; // TRUE时，接收到XoffChar之后便停止发送接收到XonChar之后将重新开始 XON/XOFF out flow control
         public int fInX; // TRUE时，接收缓冲区接收到代表缓冲区满的XoffLim之后，XoffChar发送出去接收缓冲区接收到代表缓冲区空的XonLim之后，XonChar发送出去 XON/XOFF in flow control
         public int fErrorChar; // 该值为TRUE且fParity为TRUE时，用ErrorChar 成员指定的字符代替奇偶校验错误的接收字符 enable error replacement
         public int fNull; // eTRUE时，接收时去掉空（0值）字节 enable null stripping
         public int fRtsControl; // RTS flow control
          /*RTS_CONTROL_DISABLE时,RTS置为OFF
          　 RTS_CONTROL_ENABLE时, RTS置为ON
         　　 RTS_CONTROL_HANDSHAKE时,
         　　 当接收缓冲区小于半满时RTS为ON
         　 　 当接收缓冲区超过四分之三满时RTS为OFF
         　　 RTS_CONTROL_TOGGLE时,
         　　 当接收缓冲区仍有剩余字节时RTS为ON ,否则缺省为OFF*/
         
         
         public int fAbortOnError; // TRUE时,有错误发生时中止读和写操作 abort on error
         public int fDummy2; // 未使用 reserved
         
         public uint flags;
         public ushort wReserved; // 未使用,必须为0 not currently used
         public ushort XonLim; // 指定在XON字符发送这前接收缓冲区中可允许的最小字节数 transmit XON threshold
         public ushort XoffLim; // 指定在XOFF字符发送这前接收缓冲区中可允许的最小字节数 transmit XOFF threshold
         public byte ByteSize; // 指定端口当前使用的数据位 number of bits/byte, 4-8
         public byte Parity; // 指定端口当前使用的奇偶校验方法,可能为:EVENPARITY,MARKPARITY,NOPARITY,ODDPARITY 0-4=no,odd,even,mark,space
         public byte StopBits; // 指定端口当前使用的停止位数,可能为:ONESTOPBIT,ONE5STOPBITS,TWOSTOPBITS 0,1,2 = 1, 1.5, 2
         public char XonChar; // 指定用于发送和接收字符XON的值 Tx and Rx XON character
         public char XoffChar; // 指定用于发送和接收字符XOFF值 Tx and Rx XOFF character
         public char ErrorChar; // 本字符用来代替接收到的奇偶校验发生错误时的值 error replacement character
         public char EofChar; // 当没有使用二进制模式时,本字符可用来指示数据的结束 end of input character
         public char EvtChar; // 当接收到此字符时,会产生一个事件 received event character
         public ushort wReserved1; // 未使用 reserved; do not use
      }
      
      [StructLayout(LayoutKind.Sequential)]
      private struct COMMTIMEOUTS {
         public int ReadIntervalTimeout;
         public int ReadTotalTimeoutMultiplier;
         public int ReadTotalTimeoutConstant;
         public int WriteTotalTimeoutMultiplier;
         public int WriteTotalTimeoutConstant;
      }
      
      [StructLayout(LayoutKind.Sequential)]
      private struct OVERLAPPED {
         public int Internal;
         public int InternalHigh;
         public int Offset;
         public int OffsetHigh;
         public int hEvent;
      }
      
      [DllImport("kernel32.dll")]
      private static extern int CreateFile(
      string lpFileName, // 要打开的串口名称
      uint dwDesiredAccess, // 指定串口的访问方式，一般设置为可读可写方式
      int dwShareMode, // 指定串口的共享模式，串口不能共享，所以设置为0
      int lpSecurityAttributes, // 设置串口的安全属性，WIN9X下不支持，应设为NULL
      int dwCreationDisposition, // 对于串口通信，创建方式只能为OPEN_EXISTING
      int dwFlagsAndAttributes, // 指定串口属性与标志，设置为FILE_FLAG_OVERLAPPED(重叠I/O操作)，指定串口以异步方式通信
      int hTemplateFile // 对于串口通信必须设置为NULL
      );
      [DllImport("kernel32.dll")]
      private static extern bool GetCommState(
      int hFile, //通信设备句柄
      ref DCB lpDCB // 设备控制块DCB
      );
      [DllImport("kernel32.dll")]
      private static extern bool BuildCommDCB(
      string lpDef, // 设备控制字符串
      ref DCB lpDCB // 设备控制块
      );
      [DllImport("kernel32.dll")]
      private static extern bool SetCommState(
      int hFile, // 通信设备句柄
      ref DCB lpDCB // 设备控制块
      );
      [DllImport("kernel32.dll")]
      private static extern bool GetCommTimeouts(
      int hFile, // 通信设备句柄 handle to comm device
      ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
      );
      [DllImport("kernel32.dll")]
      private static extern bool SetCommTimeouts(
      int hFile, // 通信设备句柄 handle to comm device
      ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
      );
      [DllImport("kernel32.dll")]
      private static extern bool ReadFile(
      int hFile, // 通信设备句柄 handle to file
      byte[] lpBuffer, // 数据缓冲区 data buffer
      int nNumberOfBytesToRead, // 多少字节等待读取 number of bytes to read
      ref int lpNumberOfBytesRead, // 读取多少字节 number of bytes read
      ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
      );
      [DllImport("kernel32.dll")]
      private static extern bool WriteFile(
      int hFile, // 通信设备句柄 handle to file
      byte[] lpBuffer, // 数据缓冲区 data buffer
      int nNumberOfBytesToWrite, // 多少字节等待写入 number of bytes to write
      ref int lpNumberOfBytesWritten, // 已经写入多少字节 number of bytes written
      ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
      );
      [DllImport("kernel32.dll")]
      private static extern bool CloseHandle(
      int hObject // handle to object
      );
      [DllImport("kernel32.dll")]
      private static extern uint GetLastError();
      
      public void Open()
      {
         
         DCB dcbCommPort = new DCB();
         COMMTIMEOUTS ctoCommPort = new COMMTIMEOUTS();
         
         // 打开串口 OPEN THE COMM PORT.
         hComm = CreateFile(PortNum ,GENERIC_READ | GENERIC_WRITE,0, 0,OPEN_EXISTING,0,0);
         // 如果串口没有打开，就打开 IF THE PORT CANNOT BE OPENED, BAIL OUT.
         if(hComm == INVALID_HANDLE_VALUE)
         {
            throw(new ApplicationException("非法操作，不能打开串口！"));
         }
         
         // 设置通信超时时间 SET THE COMM TIMEOUTS.
         GetCommTimeouts(hComm,ref ctoCommPort);
         ctoCommPort.ReadTotalTimeoutConstant = ReadTimeout;
         ctoCommPort.ReadTotalTimeoutMultiplier = 0;
         ctoCommPort.WriteTotalTimeoutMultiplier = 0;
         ctoCommPort.WriteTotalTimeoutConstant = 0;
         SetCommTimeouts(hComm,ref ctoCommPort);
         
         // 设置串口 SET BAUD RATE, PARITY, WORD SIZE, AND STOP BITS.
         GetCommState(hComm, ref dcbCommPort);
         dcbCommPort.BaudRate=BaudRate;
         dcbCommPort.flags=0;
         //dcb.fBinary=1;
         dcbCommPort.flags|=1;
         if (Parity>0)
         {
            //dcb.fParity=1
            dcbCommPort.flags|=2;
         }
         dcbCommPort.Parity=Parity;
         dcbCommPort.ByteSize=ByteSize;
         dcbCommPort.StopBits=StopBits;
         if (!SetCommState(hComm, ref dcbCommPort))
         {
            //uint ErrorNum=GetLastError();
            throw(new ApplicationException("非法操作，不能打开串口！"));
         }
         //unremark to see if setting took correctly
         //DCB dcbCommPort2 = new DCB();
         //GetCommState(hComm, ref dcbCommPort2);
         Opened = true;
      }
      
      public void Close() {
         if (hComm!=INVALID_HANDLE_VALUE) {
            CloseHandle(hComm);
         }
      }
      
      public byte[] Read(int NumBytes) {
         byte[] BufBytes;
         byte[] OutBytes;
         BufBytes = new byte[NumBytes];
         if (hComm!=INVALID_HANDLE_VALUE) {
            OVERLAPPED ovlCommPort = new OVERLAPPED();
            int BytesRead=0;
            ReadFile(hComm,BufBytes,NumBytes,ref BytesRead,ref ovlCommPort);
            OutBytes = new byte[BytesRead];
            Array.Copy(BufBytes,OutBytes,BytesRead);
         }
         else {
            throw(new ApplicationException("串口未打开！"));
         }
         return OutBytes;
      }
      
      public void Write(byte[] WriteBytes) {
         if (hComm!=INVALID_HANDLE_VALUE) {
            OVERLAPPED ovlCommPort = new OVERLAPPED();
            int BytesWritten = 0;
            WriteFile(hComm,WriteBytes,WriteBytes.Length,ref BytesWritten,ref ovlCommPort);
         }
         else {
            throw(new ApplicationException("串口未打开！"));
         }
      }
   }
   
   class HexCon {
      // 把十六进制字符串转换成字节型和把字节型转换成十六进制字符串 converter hex string to byte and byte to hex string
      public static string ByteToString(byte[] InBytes) {
         string StringOut="";
         foreach (byte InByte in InBytes) {
            StringOut=StringOut + String.Format("{0:X2} ",InByte);
         }
         return StringOut;
      }
      public static byte[] StringToByte(string InString) {
         string[] ByteStrings;
         ByteStrings = InString.Split(" ".ToCharArray());
         byte[] ByteOut;
         ByteOut = new byte[ByteStrings.Length-1];
         for (int i = 0;i==ByteStrings.Length-1;i++) {
            ByteOut[i] = Convert.ToByte(("0x" + ByteStrings[i]));
         }
         return ByteOut;
      }
   }
}