51单片机“呼吸灯”程序

只看该作者 · 2015-8-6 09:03

刚看了一份关于光立方的视频里片面提到“呼吸灯”一词，忙草草写了一个带数码管显示亮度变化的呼吸灯程序，其中整型frequency为调节呼吸频率的参数，附图为临时做的gif文件，需等会儿才见效果

#include<reg51.h>

#define uchar unsigned char

#define uint unsigned int

uint f=100; /*????????f????????????1~10khz*/

uint H=6;/*????????·§????????0~10000/f????H>L*/

uint L=0;/*????????·§????????0~10000/f????H>L*/

uchar code wela[]={0xfe,0xfd,0xfb,0xf7};

uchar code dula[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xD8,0x80,0x90};

uint m=0,t;

uchar amp=0,frequency=100;

sbit pwm=P1^7;

sbit pwm_=P1^6;

sbit hkey=P3^5;

sbit lkey=P3^3;

void diskey();

void delay(uint z);

void display();

void xunhuan();

void main()

{

EA=1;

ET0=1;

TMOD=0x02;

TH0=146;

t=10000/f;

TR0=1;

while(1)

{

if(hkey==0)diskey();

if(lkey==0)diskey();

display();

xunhuan();

}

}

void TRT0() interrupt 1

{

m++;

if(m>=t)m=0;

if(m==L){pwm=0;}

if(m==H){pwm=1;pwm_=0;}

}

void diskey()

{

display();

if(hkey==0&&H<100)H++;

delay(10);

if(lkey==0&&H>0)H--;

display();

}

void xunhuan()

{

if(amp==1)H++;

if(H>99)amp=0;

if(amp==0)H--;

if(H<1)amp=1;

delay(frequency);

}

void delay(uint z)

{

uint x,y;

for(y=z;y>0;y--)

for(x=12;x>0;x--);

}

void display()

{

delay(2);

P2=dula[H/1000];

P0=wela[0];

delay(5);

P0=0xff;

P2=dula[H%1000/100];

P0=wela[1];

delay(5);

P0=0xff;

P2=dula[H%100/10];

P0=wela[2];

delay(5);

P0=0xff;

P2=dula[H%10];

P0=wela[3];

delay(5);

P0=0xff;

}