keil写32个流水灯变换代码

以下是Keil编写32个流水灯变换的示例代码：

#include <reg52.h>

#define uchar unsigned char
#define uint unsigned int

sbit led1 = P2^0;
sbit led2 = P2^1;
sbit led3 = P2^2;
sbit led4 = P2^3;
sbit led5 = P2^4;
sbit led6 = P2^5;
sbit led7 = P2^6;
sbit led8 = P2^7;
sbit led9 = P1^0;
sbit led10 = P1^1;
sbit led11 = P1^2;
sbit led12 = P1^3;
sbit led13 = P1^4;
sbit led14 = P1^5;
sbit led15 = P1^6;
sbit led16 = P1^7;
sbit led17 = P0^0;
sbit led18 = P0^1;
sbit led19 = P0^2;
sbit led20 = P0^3;
sbit led21 = P0^4;
sbit led22 = P0^5;
sbit led23 = P0^6;
sbit led24 = P0^7;
sbit led25 = P3^0;
sbit led26 = P3^1;
sbit led27 = P3^2;
sbit led28 = P3^3;
sbit led29 = P3^4;
sbit led30 = P3^5;
sbit led31 = P3^6;
sbit led32 = P3^7;

void delay(uint xms) {
    uint i,j;
    for(i=xms;i>0;i--) {
        for(j=112;j>0;j--);
    }
}

void main() {
    while(1) {
        led1 = 0; delay(50);
        led2 = 0; delay(50);
        led3 = 0; delay(50);
        led4 = 0; delay(50);
        led5 = 0; delay(50);
        led6 = 0; delay(50);
        led7 = 0; delay(50);
        led8 = 0; delay(50);
        led9 = 0; delay(50);
        led10 = 0; delay(50);
        led11 = 0; delay(50);
        led12 = 0; delay(50);
        led13 = 0; delay(50);
        led14 = 0; delay(50);
        led15 = 0; delay(50);
        led16 = 0; delay(50);
        led17 = 0; delay(50);
        led18 = 0; delay(50);
        led19 = 0; delay(50);
        led20 = 0; delay(50);
        led21 = 0; delay(50);
        led22 = 0; delay(50);
        led23 = 0; delay(50);
        led24 = 0; delay(50);
        led25 = 0; delay(50);
        led26 = 0; delay(50);
        led27 = 0; delay(50);
        led28 = 0; delay(50);
        led29 = 0; delay(50);
        led30 = 0; delay(50);
        led31 = 0; delay(50);
        led32 = 0; delay(50);
        led1 = 1;
        led2 = 1;
        led3 = 1;
        led4 = 1;
        led5 = 1;
        led6 = 1;
        led7 = 1;
        led8 = 1;
        led9 = 1;
        led10 = 1;
        led11 = 1;
        led12 = 1;
        led13 = 1;
        led14 = 1;
        led15 = 1;
        led16 = 1;
        led17 = 1;
        led18 = 1;
        led19 = 1;
        led20 = 1;
        led21 = 1;
        led22 = 1;
        led23 = 1;
        led24 = 1;
        led25 = 1;
        led26 = 1;
        led27 = 1;
        led28 = 1;
        led29 = 1;
        led30 = 1;
        led31 = 1;
        led32 = 1;
    }
}

这是一个简单的流水灯程序，利用了单片机的GPIO口控制LED灯的开关状态，通过循环控制LED灯的亮灭顺序，实现流水灯效果。在程序中，使用了一个延时函数 `delay()`，用于控制每盏LED灯亮灭的时间间隔。注意在使用时需要根据硬件连接情况修改对应的GPIO口定义和延时时间。