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[/] [System09/] [trunk/] [Tools/] [Mot2Hex/] [mot2hex.c] - Blame information for rev 159

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Line No. Rev Author Line
1 62 davidgb 
/*
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 * Motorola S1 format to Intel hex format
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 * Usage
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 * mot2hex <file_name>
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 */
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#include <stdio.h>
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#include <string.h>
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int gethex( FILE *fp_in )
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{
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    int hex;
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    hex = fgetc( fp_in );
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    if( (hex >= '0') && (hex <= '9' ))
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        hex -= '0';
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    else if( (hex >= 'A') && (hex <= 'F'))
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        hex = hex - 'A' + 10;
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    else
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        hex = -1;
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    return hex;
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}
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int get2hex( FILE *fp_in )
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{
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    int hexhi, hexlo, byte;
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    hexhi = gethex( fp_in );
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    if( hexhi != -1 )
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    {
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        hexlo = gethex( fp_in );
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        if( hexlo != -1 )
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        {
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            byte = hexhi * 16 + hexlo;
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            return byte;
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        }
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    }
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    return -1;
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}
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int get4hex( FILE *fp_in )
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{
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    int bytehi, bytelo, addr;
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    bytehi = get2hex( fp_in );
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    if( bytehi != -1 )
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    {
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        bytelo = get2hex( fp_in );
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        if( bytelo != -1 )
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        {
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            addr = (bytehi * 256) + bytelo;
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            return addr;
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        }
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    }
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    return -1;
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}
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main( int argc, char *argv[] )
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{
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        FILE *fp_in, *fp_out;
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        char fname_in[32];
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        char fname_out[32];
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        int byte, addr, start, i;
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        int motorola_check, intel_check;
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        int motorola_count, intel_count;
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        if( argc != 2 )
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        {
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            printf( "\n usage: mot2hex <file_name> \n" );
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            exit(0);
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        }
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        sprintf( fname_in, "%s.s19", argv[1] );
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        fp_in = fopen( fname_in, "r" );
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        if( !fp_in )
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        {
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            sprintf( fname_in, "%s.s1", argv[1] );
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            fp_in = fopen( fname_in, "r" );
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            if( !fp_in )
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            {
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                printf( "Can't open %s", fname_in );
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                exit(0);
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            }
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        }
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        sprintf( fname_out, "%s.hex", argv[1] );
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        fp_out = fopen( fname_out, "w" );
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        if( !fp_out )
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        {
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            printf( "Can't open %s", fname_out );
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            exit(0);
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        }
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        byte = 0;
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        addr = 0;
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        start = -1;
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        while( byte != -1 )
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        {
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            /*
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             * Motorola 8 bit record starts with "S1"
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             */
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            do {
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                byte = fgetc( fp_in);
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            } while( (byte != 'S') && (byte != -1) );
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            byte = fgetc( fp_in );
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            if( byte == '1' )
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            {
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                /*
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                 * get byte count from Motorola record
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                 */
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                motorola_count = get2hex( fp_in );
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                motorola_check = motorola_count;
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                /*
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                 * Intel byte count is for data field only
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                 * round up to even byte boundary
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                 */
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                intel_count = motorola_count - 3;
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                intel_check = intel_count;
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                /*
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                 * Get two byte motorola address field
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                 */
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                addr = get4hex( fp_in );
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                motorola_check += (addr & 0xff);
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                motorola_check += (addr & 0xff00) >> 8;
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                /*
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                 * output intel start of record
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                 * ":" <data count> <address> <record type>
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                 */
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                intel_check += (addr & 0xff);
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                intel_check += (addr & 0xff00) >> 8;
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                fprintf( fp_out, ":%02x%04x00", intel_count, addr );
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                /*
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                 * Input Motorola data field
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                 */
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                for( i=0; i<intel_count; i++ )
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                {
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                    byte = get2hex( fp_in );
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                    motorola_check += byte;
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                    /*
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                     * Output Intel data field
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                     */
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                    intel_check += byte;
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                    fprintf( fp_out, "%02x", byte );
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                    /*
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                     * Get the start of record from the reset vector
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                     */
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                    if( addr == 0xfffe )
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                        start = byte * 256;
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                    if( addr == 0xffff )
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                        start += byte;
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                    addr ++;
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                }
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                /*
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                 * Display Motorola cehcksum for current record
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                 * should be 0xff
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                 */
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                byte = get2hex( fp_in) & 0xff;
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                motorola_check += byte;
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                motorola_check &= 0xff;
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                printf( " Motorola checksum = %02x   ", motorola_check );
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                /*
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                 * Display Intel checksum
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                 */
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                intel_check &= 0xff;
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                intel_check = 0x100 - intel_check;
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                intel_check &= 0xff;
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                printf( "Intel checksum = %02x \n", intel_check );
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                /*
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                 * Output Intel checksum
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                 */
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                fprintf( fp_out, "%02x\n", intel_check);
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                if( addr > 0xffff )
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                   byte = -1;
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             }
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        }
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        /*
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         * output Intel trasfer address
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         */
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        if( start != -1 )
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        {
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            fprintf( fp_out, ":00%04x01", start );
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        }
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        /*
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         * Close input and output files and exit
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         */
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        close( fp_in );
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        close( fp_out );
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}

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