s2l4.c

来自「新买的书」· C语言 代码 · 共 37 行

/*********************************************************************
 * S2L4.c - (Section 2, Lesson 4) WRITING AN INTEGER TO THE TARGET
 *          This is the RTDX Target Code for Section 2, Lesson 4
 ********************************************************************/
 
#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;
        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( "ERROR: RTDX_read failed!\n" );
                exit( -1 );
        } else
                printf( "Value %d was received from the host\n", data );

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

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