LED跑马灯控制系统：共16只LED发光二极管。 按1键，由左到右发光二极管依次点亮。全亮后5秒后消灭。再重复

发布网友 发布时间：2022-04-23 12:43

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热心网友 时间：2023-10-13 22:01

/////////////////////////////////////////
//STCC52单片机12M晶振
//用P1、P2口来控制流水灯
//天天奕想 3509537@qq.com
/////////////////////////////////////////

#include <reg52.h>

#define uchar unsigned char
#define uint unsigned int

sbit KEY2 = P3^1;
sbit KEY2 = P3^2;
sbit KEY3 = P3^3;

uchar CountNum;//溢出次数计数

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

void main()
{
uchar i;
TMOD = 0X01;//定时器0方式1
TH0 = (65536 - 50000) / 256;
TH0 = (65536 - 50000) % 256; //装初值，50ms溢出一次
TR0 = 0;//先不启动定时器0
ET0 = 1;//开定时器0中断
EA = 1;//开总中断

P1 = 0XFF;
P2 = 0XFF; //初始化，灯全灭

while(1)
{
if(KEY1 == 0)
{
delay(1000); //消抖
if(KEY1 == 0)
{
while(KEY1 == 0); //送手检测

for(i = 0; i < 8; i++)
{
P2 = 0x7f;
P2 >>= 1;
delay(10000);
}
for(i = 0; i < 8; i++)
{
P1 = 0x7f;
P1 >>= 1;
delay(10000);
}
TR0 = 1;//启动定时器0
while(CountNum <= 100); //等待5秒
TR0 = 0;//关定时器0
P1 = 0XFF;
P2 = 0XFF;
}
}
if(KEY2 == 0)
{
delay(1000); //消抖
if(KEY2 == 0)
{
while(KEY2 == 0); //送手检测
for(i = 0; i < 8; i++)
{
P1 = 0xfe;
P1 <<= 1;
delay(10000);
}
for(i = 0; i < 8; i++)
{
P2 = 0xfe;
P2 <<= 1;
delay(10000);
}
TR0 = 1;//启动定时器0
while(CountNum <= 100); //等待5秒
TR0 = 0;//关定时器0
P1 = 0XFF;
P2 = 0XFF;
}
}
if(KEY3 == 0)
{
delay(1000); //消抖
if(KEY3 == 0)
{
while(KEY3 == 0); //送手检测
for(i = 0; i < 8; i++)
{
P1 = 0x7f;
P2 = 0xfe;
P1 >>= 1;
P2 <<= 1;
delay(10000);
}
TR0 = 1;//启动定时器0
while(CountNum <= 100); //等待5秒
TR0 = 0;//关定时器0
P1 = 0XFF;
P2 = 0XFF;
}
}
}
}

void timer0() interrupt 1
{
TH0 = (65536 - 50000) / 256;
TH0 = (65536 - 50000) % 256; //装初值，50ms溢出一次
CountNum++;
}