51单片机花样呼吸灯程序

#include

/*-----------定义单片机引脚--*/

sbit LED0=P1^0;

sbit LED1=P1^1;

sbit LED2=P1^2;

sbit LED3=P1^3;

sbit LED4=P1^4;

sbit LED5=P1^5;

sbit LED6=P1^6;

sbit LED7=P1^7;

void Delay(unsigned int t); //函数声明

unsigned int z,y;

void main (void)//主函数

{

unsigned int CYCLE=1000,PWM_LOW=0;//定义周期并赋值

while (1) //主循环

{

/*--------整排LED灯呼吸---------*/

P1=0x00;

Delay(1000); //加延时，可以看到熄灭的过程（下面程序同理）

for(PWM_LOW=1;PWM_LOW

{

P1=0x00;

Delay(PWM_LOW);

P1=0xff;

Delay(CYCLE-PWM_LOW);

}

P1=0xff;

for(PWM_LOW=CYCLE-1;PWM_LOW>0;PWM_LOW--) //与逐渐变亮相反的过程

{

P1=0x00; //点亮LED

Delay(PWM_LOW);

P1=0xff; //熄灭LED

Delay(CYCLE-PWM_LOW); //主循环中添加其他需要一直工作的程序，延时长度，600次循环中从599减至1

}

/*--------第一颗LED灯呼吸---------*/

/* LED0=1;

Delay(1000);

for(PWM_LOW=1;PWM_LOW

{

LED0=0;

Delay(PWM_LOW);

LED0=1;

Delay(CYCLE-PWM_LOW);

}

LED0=0;

for(PWM_LOW=CYCLE-1;PWM_LOW>0;PWM_LOW--) {

LED0=0;

Delay(PWM_LOW);

LED0=1;

Delay(CYCLE-PWM_LOW);

}

/*--------第二颗LED灯呼吸----------*/

/* LED1=1;

Delay(500);

for(PWM_LOW=1;PWM_LOW

{

LED1=0;

Delay(PWM_LOW);

LED1=1;

Delay(CYCLE-PWM_LOW);

}

LED1=0;

for(PWM_LOW=CYCLE-1;PWM_LOW>0;PWM_LOW--)

{

LED1=0;

Delay(PWM_LOW);

LED1=1;

Delay(CYCLE-PWM_LOW);

}

/*--------第三颗LED灯呼吸----------*/

/* LED2=1;

Delay(500);

for(PWM_LOW=1;PWM_LOW

{

LED2=0;

Delay(PWM_LOW);

LED2=1;

Delay(CYCLE-PWM_LOW);

}

LED2=0;

for(PWM_LOW=CYCLE-1;PWM_LOW>0;PWM_LOW--)

{

LED2=0;

Delay(PWM_LOW);

LED2=1;

Delay(CYCLE-PWM_LOW);

}

/*--------第四颗LED灯呼吸----------*/

/* LED3=1;

Delay(500);

for(PWM_LOW=1;PWM_LOW

{

LED3=0;

Delay(PWM_LOW);

LED3=1;

Delay(CYCLE-PWM_LOW);

}

LED3=0;

for(PWM_LOW=CYCLE-1;PWM_LOW>0;PWM_LOW--)

{

LED3=0;

Delay(PWM_LOW);

LED3=1;

Delay(CYCLE-PWM_LOW);

}

/*--------第五颗LED灯呼吸----------*/

/* LED4=1;

Delay(500);

for(PWM_LOW=1;PWM_LOW

{

LED4=0;

Delay(PWM_LOW);

LED4=1;

Delay(CYCLE-PWM_LOW);

}

LED4=0;

for(PWM_LOW=CYCLE-1;PWM_LOW>0;PWM_LOW--)

{

LED4=0;

Delay(PWM_LOW);

LED4=1;

Delay(CYCLE-PWM_LOW);

}

/*--------第六颗LED灯呼吸----------*/

/* LED5=1;

Delay(500);

for(PWM_LOW=1;PWM_LOW

{

LED5=0;

Delay(PWM_LOW);

LED5=1;

Delay(CYCLE-PWM_LOW);

}

LED5=0;

for(PWM_LOW=CYCLE-1;PWM_LOW>0;PWM_LOW--)

{

LED5=0;

Delay(PWM_LOW);

LED5=1;

Delay(CYCLE-PWM_LOW);

}

/*--------第七颗LED灯呼吸----------*/

/* LED6=1;

Delay(500);

for(PWM_LOW=1;PWM_LOW

{

LED6=0;

Delay(PWM_LOW);

LED6=1;

Delay(CYCLE-PWM_LOW);

}

LED6=0;

for(PWM_LOW=CYCLE-1;PWM_LOW>0;PWM_LOW--)

{

LED6=0;

Delay(PWM_LOW);

LED6=1;

Delay(CYCLE-PWM_LOW);

}

/*--------第八颗LED灯呼吸----------*/

/* LED7=1;

Delay(500);

for(PWM_LOW=1;PWM_LOW

{

LED7=0;

Delay(PWM_LOW);

LED7=1;

Delay(CYCLE-PWM_LOW);

}

LED7=0;

for(PWM_LOW=CYCLE-1;PWM_LOW>0;PWM_LOW--)

{

LED7=0;

Delay(PWM_LOW);

LED7=1;

Delay(CYCLE-PWM_LOW);

}

/* P1=0x00;

for(z=500;z>0;z--)

for(y=110;y>0;y--);

P1=0xff;

for(z=500;z>0;z--)

for(y=110;y>0;y--);

P1=0x00;

for(z=500;z>0;z--)

for(y=110;y>0;y--);

P1=0xff;

for(z=500;z>0;z--)

for(y=110;y>0;y--); */

}

}

void Delay(unsigned int t)

{

while(--t);

}

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