led_flash.c

LED闪烁应用程序(基于AT91SAM9260开发板linux2.6.22)

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ioctl.h>
int main(void)
{
   int fd;
   fd=open("/dev/leds",0);
   if(fd<0)
   {
      printf("Can't open /dev/leds\n");
      goto end1;
   }
   while(1)
   {
     ioctl(fd,0,0);
     sleep(1);
     ioctl(fd,1,0);
     sleep(1);
   }
   close(fd);
end1:
   return 0;
}