s4l2.c

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/*********************************************************************
 * S4L2.c - (Section 4, Lesson 2) CONSIDERATIONS FOR FLUSH
 *          This is the RTDX Target Code for Section 4, Lesson 2
 ********************************************************************/
 
#include <rtdx.h>       /* defines RTDX target API calls            */
#include "target.h"     /* defines TARGET_INITIALIZE()              */
#include <stdio.h>      /* C_I/O                                    */

/* declare a global input channel                                   */
RTDX_CreateInputChannel( ichan );
 
void main()
{
        int data[2];
        int status;

        TARGET_INITIALIZE();

        /* enable the input channel                                 */
        RTDX_enableInput( &ichan );

        /* receive an integer from the host                         */
        status = RTDX_read( &ichan, data, sizeof(data) );

        if ( status != sizeof(data) )
                printf( "Target application requested %d bytes " \
                         "and only received %d bytes\n", \
                         sizeof(data), \
                         RTDX_sizeofInput(&ichan) );
        else
                printf( "Value %d was received from the host\n", data[0] );

        /* disable the input channel                                */
        RTDX_disableInput( &ichan );

        printf( "Program Complete!\n" );
}