#include <fcntl.h>
#include <stdio.h>
#include <sys/ioctl.h>

int main()
{
    int i;
    int skel_dev;
    int str[] = {0xEC, 0xEE, 0xE6, 0xE6, 0xDC, 0x00};

    if ((skel_dev = open("/dev/led", O_RDONLY, 0)) < 0) {
        fprintf(stderr, "Failed to open /dev/led\n");
        exit(2);
    }
    for (i = 0; i < 6; i++) {
        if (ioctl(skel_dev, str[i], 0) < 0) {
            perror("ioctl failed");
            exit(2);
        }
        sleep(1);
    }

    exit(0);
}