[讨论] 第三回 呼吸灯 玩砸了 linux开发怎么搞?

#include "stdio.h"

#include "stdlib.h"

#include

#include

long light_cnt = 0;

long dark_cnt = 0;

long tmp=10000;

FILE* fd;

void led_onetime(){

const char *led = "/sys/class/leds/led0/brightness";

fd = fopen(led,"w+");

fwrite("1",1,1,fd);

tmp=10000;

while(light_cnt--) tmp--;

fwrite("0",1,1,fd);

tmp=10000;

while(dark_cnt--) tmp--;

}

int main(void){

light_cnt=0;

while(1){

light_cnt++;

if(light_cnt>100) light_cnt=0;

dark_cnt=100-light_cnt;

led_onetime();

}

}