hello.c

#include <stdio.h>

#include "ev3.h"
#include "ev3_light.h"

int main( void )
{
    printf( "Hello, LEGO World!\n" );

    ev3_init();
    switch ( get_light( LIT_LEFT )) {

    case LIT_GREEN:
        set_light( LIT_LEFT, LIT_RED );
        break;

    case LIT_RED:
        set_light( LIT_LEFT, LIT_AMBER );
        break;

    default:
        set_light( LIT_LEFT, LIT_GREEN );
        break;
    }
    ev3_uninit();

    return 0;
}