linux led驱动 应用程序

#include #include #include #include #include int main(int argc,char *argv[]){char *led_name = "/dev/led_driver";int fd,ret;fd = open(led_name,O_RDWR);if(0 > fd){printf("open file faild\n"); //perror(fd); return fd;}printf("open ok \n"); ret = atoi(argv[1]);ioctl(fd,ret,0); close(fd);return 0;}