keil5流水灯代码

以下是使用Keil编写的流水灯代码：

#include <reg52.h>
#include <intrins.h>

#define led P2

typedef unsigned char u8;
typedef unsigned int u16;

void delay(u16 i) {
    while(i--);
}

void main() {
    u8 i;
    led = 0xfe;
    delay(50000);
    while(1) {
        for(i = 1; i < 8; i++) {
            led = _crol_(led, 1);
            delay(5000);
        }
        for(i = 1; i < 8; i++) {
            led = _cror_(led, 1);
            delay(5000);
        }
    }
}