呼吸灯89c52代码

以下是89c52单片机实现呼吸灯的代码：

#include <reg52.h>

sbit LED = P1^0;  // 呼吸灯连接的IO口

void Delay(unsigned int xms) {
    unsigned char i, j;
    while(xms--) {
        i = 2;
        j = 239;
        do {
            while (--j);
        } while (--i);
    }
}

void main() {
    while(1) {
        for (int i = 0; i <= 255; i++) {
            LED = i;
            Delay(5);
        }
        for (int i = 255; i >= 0; i--) {
            LED = i;
            Delay(5);
        }
    }
}