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# sendpage.c

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    00001
    00002 /*
    00003  *   THIS FILE IS UNDER RCS - DO NOT MODIFY UNLESS YOU HAVE
    00004  *   CHECKED IT OUT USING THE COMMAND CHECKOUT.
    00005  *
    00006  *    $Id: sendpage_8c-source.html 2161 2006-05-19 16:55:03Z paulf $
    00007  *
    00008  *    Revision history:
    00009  *     $Log$
    00009  *     Revision 1.1  2006/05/19 16:55:02  paulf
    00009  *     first inclusion
    00009  *
    00010  *     Revision 1.1  2000/02/14 18:53:30  lucky
    00011  *     Initial revision
    00012  *
    00013  *
    00014  */
    00015
    00016   /**********************************************************************
    00017    *                             sendpage.c                             *
    00018    *                         Windows NT version                         *
    00019    **********************************************************************/
    00020
    00021 #include <windows.h>
    00022 #include <stdio.h>
    00023 #include <earthworm.h>
    00024
    00025
    00026  /**********************************************************************
    00027   *            Send a Pager Request to PAGEIT via Serial Port          *
    00028   *                          SendPage( buff )                          *
    00029   *                                                                    *
    00030   *     Will time out after four seconds if anything caused a hang.    *
    00031   *     buff = String to output to serial port                         *
    00032   *                                                                    *
    00033   * Returns:                                                           *
    00034   *      0 => All went well                                            *
    00035   *     -1 => Time out - not in os2 or nt versions                     *
    00036   *     -2 => Error while writing to port                              *
    00037   **********************************************************************/
    00038
    00039 int SendPage( char *buff )
    00040 {
    00041    HANDLE     comHandle;
    00042    BOOL       success;
    00043    DCB        dcb;
    00044    DWORD      numWritten;
    00045
    00046 /* Set up the port with these parameters
    00047    *************************************/
    00048    const char SerialPort[] = "COM2";
    00049    const DWORD baud        = 9600;
    00050    const BYTE  parity      = EVENPARITY;
    00051    const BYTE  databits    = 7;
    00052    const BYTE  stopbits    = ONESTOPBIT;
    00053
    00054 /* Open the com port
    00055    *****************/
    00056    comHandle = CreateFile( SerialPort, GENERIC_READ | GENERIC_WRITE,
    00057                            0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0 );
    00058
    00059 /* Get the current settings of the COMM port
    00060    *****************************************/
    00061    success = GetCommState( comHandle, &dcb );
    00062    if ( !success )
    00063    {
    00064       logit( "e", "sendpage error getting the COM settings: %d\n", GetLastError() );
    00065       return -2;
    00066    }
    00067
    00068 /* Modify the COMM settings
    00069    ************************/
    00070    dcb.BaudRate = baud;
    00071    dcb.Parity   = parity;
    00072    dcb.ByteSize = databits;
    00073    dcb.StopBits = stopbits;
    00074
    00075 /* Apply the new COMM port settings
    00076    ********************************/
    00077    success = SetCommState( comHandle, &dcb );
    00078    if ( !success )
    00079    {
    00080       logit( "e", "sendpage error applying the COM settings: %d\n", GetLastError() );
    00081       return -2;
    00082    }
    00083
    00084 /* Send pager message to serial port
    00085    *********************************/
    00086    success = WriteFile( comHandle, buff, strlen(buff), &numWritten, 0 );
    00087    if ( !success )
    00088    {
    00089       logit( "e", "sendpage error for port %s: %d\n", SerialPort, GetLastError() );
    00090       CloseHandle( comHandle );
    00091       return -2;
    00092    }
    00093
    00094    CloseHandle( comHandle );
    00095    return 0;
    00096 }