#include <stdio.h>#include <sys/types.h>  // open#include <sys/stat.h>   // open#include <sys/ioctl.h>  // ioctl#include <fcntl.h>      // open#include <unistd.h>     // close#include <linux/input.h> // event #include "leddev.h"intmain( int argc, char ** argv ){  int fd;  int i;  struct input_event evt;  fd = open( argv[1], O_RDONLY );  if ( fd >= 0 ) {    printf( "testled o.k. fd %d\n", fd );    for (i=0; i<10; i++) {      read(fd, &evt, sizeof( struct input_event ));      printf("Event: %d %d %d\n", evt.type, evt.code, evt.value );      sleep(3);    }     close( fd );  } else {    printf( "testled fail\n" );  }  return 0;}