t_wrtsa.c

TMS320F2812的C++ examples 各个模块的程序

/*********************************************************************
 * FILENAME: $RCSfile: t_wrtsa.c,v $
 * VERSION : $Revision: 1.8 $
 * DATE    : $Date: 2001/12/05 20:10:47 $
 * Copyright (c) 1997-2000 Texas Instruments Incorporated
 *
 * Target Write (for SAFEARRAYS) Example:
 *____________________________________________________________________
 * - Sends an array of 5 integers, 100 times, via RTDX_write().
 * - Uses ONE output channel.
 *
 * - This is the module to be run on the TARGET.
 * - This program is meant to be used with the RTDX Excel project's
 *   VBA module h_rdsa().
 ********************************************************************/
#include <stdio.h>                      /* fprintf(), puts()        */
#include <stdlib.h>                     /* abort()                  */
#include <rtdx.h>                       /* RTDX                     */
#include "target.h"                     /* TARGET_INITIALIZE()      */

#define MAX_MESSAGES 100
#define MAX_ELEMENTS 5

/* Declare and initialize an output channel called "ochan"          */
RTDX_CreateOutputChannel(ochan);

void main()
{
        unsigned int x = 0, y = 0, last = 0;
        int message[MAX_ELEMENTS];

        /* Target initialization for RTDX                           */
        TARGET_INITIALIZE();

        /* Enable the output channel, "ochan"                       */
        RTDX_enableOutput(&ochan);

        for ( x = 0; x < MAX_MESSAGES; x++ ) {

                /* Build the array                                  */
                for ( y = last; y < (last + MAX_ELEMENTS); y++ ) {
                        if ( y == 0 )
                                message[0] = 0;
                        else
                                message[y % MAX_ELEMENTS] = y;
                }
                last = y;

                /* Send the data to the host                        */
                if (!RTDX_write( &ochan,
                                message,
                                sizeof(message) ) ) {
                        fprintf(stderr,
                                "\nError: RTDX_write() failed!\n");
                        abort();
                }

                /* Wait for data transfer                           */
                while ( RTDX_writing != NULL ) {
                        #if RTDX_POLLING_IMPLEMENTATION
                                /* Call Poll to do data transfer    */
                                RTDX_Poll();
                        #endif
                }
        }

        /* Disable the output channel, "ochan"                      */
        RTDX_disableOutput(&ochan);

        puts("\nProgram Completed!");
}