C # packages a serial operation class (available for Win CE)

private const uint PURGE_TXABORT = 0x0001; // Kill the pending / current writes to the comm port private const uint PURGE_RXABORT = 0x0002;. // Kill the pending / current reads to the comm port private const uint PURGE_TXCLEAR = 0x0004;. // Kill . the transmit queue if there private const uint PURGE_RXCLEAR = 0x0008;. // Kill the typeahead buffer if there [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; // DTR Flow Control Type Public Int Fdsrsensitivity; // DSR Sensitivity Public Int ftxContinueonxoff; // Xoff Continues TX PUBL ic 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 eofcha; //// 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 intert overlapped {public int interunalhigh; public int offset; public int

[StructLayout (LayoutKind.Sequential)] private struct COMSTAT {/ * public int fCtsHold; public int fDsrHold; public int fRlsdHold; public int fXoffHold; public int fXoffSent; public int fEof; public int fTxim; public int fReserved; public int cbInQue; public int cbOutQue; * / // Should have a reverse, i do not know why !!!!! public int cbOutQue; public int cbInQue; public int fReserved; public int fTxim; public int fEof; public int fXoffSent; public int fXoffHold; public int fRlsdHold; public int fDsrHold; public int fCtsHold;} #if FULLFRAMEWORK [DllImport ( "kernel32")] 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); # else [DllImport ( "coredll")] private static extern int CreateFile (string lpFileName, // file name uint dwDesiredAccess, // access mode int dwShareMode, // share mode int lpSecurityAttributes, // sd dwcreationdisposition, // how to create int dwflagsandattributes, // file attribute to time); # Endif # if fullframework [DLLIMPORT ("kernel32"

)] Private static extern bool GetCommState (int hFile, // handle to communications device ref DCB lpDCB // device-control block); #else [DllImport ( "coredll")] private static extern bool GetCommState (int hFile, // handle to communications device ref DCB lpDCB // device-control block); # endif # if FULLFRAMEWORK [DllImport ( "kernel32")] private static extern bool BuildCommDCB (string lpDef, // device-control string ref DCB lpDCB // device-control block); #else [DllImport ( "coredll")] private static extern bool BuildCommDCB (string lpDef, // device-control string ref DCB lpDCB // device-control block); # endif # if FULLFRAMEWORK [DllImport ( "kernel32" )] private static extern bool SetCommState (int hFile, // handle to communications device ref DCB lpDCB // device-control block); # else [DllImport ( "coredll")] private static extern bool SetCommState (int hFile, // handle To Communications Device Ref DCB LPD CB // device-control block); # endif # if FULLFRAMEWORK [DllImport ( "kernel32")] private static extern bool GetCommTimeouts (int hFile, // handle to comm device ref COMMTIMEOUTS lpCommTimeouts // time-out values); # else [DllImport ( "coredll")] private static extern bool GetCommTimeouts (int hFile, // handle to comm device ref COMMTIMEOUTS lpCommTimeouts // time-out values); # endif # if FULLFRAMEWORK [DllImport ( "kernel32")] private static extern Bool setcommtimeouts (int hfile, // handle to commit commick ref "lp); # else [DLLIMPORT (" Coredll "

)] Private static extern bool SetCommTimeouts (int hFile, // handle to comm device ref COMMTIMEOUTS lpCommTimeouts // time-out values); # endif # if FULLFRAMEWORK [DllImport ( "kernel32")] 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); # else [DllImport ( "coredll ")] 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; # Endif # if fullframework [DLLIMPORT ("kernel32")] 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); #else [DllImport ( "coredll")] 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); # ENDIF # ix ifeframework [DLLIMPORT ("kernel32"

)] Private static extern bool CloseHandle (int hObject // handle to object); # else [DllImport ( "coredll")] private static extern bool CloseHandle (int hObject // handle to object); # endif # if FULLFRAMEWORK [DllImport ( "kernel32")] private static extern bool ClearCommError (int hFile, // handle to file ref int lpErrors, ref COMSTAT lpStat); # else [DllImport ( "coredll")] private static extern bool ClearCommError (int hFile, // handle to file ref int lpErrors, ref COMSTAT lpStat); # endif # if FULLFRAMEWORK [DllImport ( "kernel32")] private static extern bool PurgeComm (int hFile, // handle to file uint dwFlags); # else [DllImport ( "coredll" )] private static extern bool PurgeComm (int hFile, // handle to file uint dwFlags); # endif # if FULLFRAMEWORK [DllImport ( "kernel32")] private static extern bool SetupComm (int hFile, int dwInQueue, int dwOutQueue); # Else [DLLIMPORT ("Coredll")] Private Static Extern Bool SetupComm INT HFILE, INT DWINQUEUE, INT DWoutqueue); # Endif # endregion // SerialPort member Variable Private Int hcomm = invalid_handle_value; private bool bind = false;

Public Bool Opened;}} ///