原标题：模拟风扇控制电路(单片机C程序设计)

/*

1、定时设置每按一下定时值在0分---2分----4分---6分----8分--10循环

2、主电机工作方式有三种，A、PWM为三分之一

B、PWM为二分之一 C、PWM为三分之二；

3、显示第一位显示风类，第二三四位动态显示定时时间；

4、摇头电机每30秒正转30秒反转；

==================================================

*/

#include

#define uint unsigned int

#define uchar unsigned char

unsigned char code table[]={0x3f,0x06,0x5b,

0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40};

uchar flag,flag1,flag2,flag3,fen,miao,flagfen;

uchar fenglei1,dingshi1,yaotu1;

uchar num1,num2,temp;

uint aa,bb,cc;

sbit fenglei=P3^0;

sbit dingshi=P3^1;

sbit yaotu=P3^2;

sbit wei1=P2^3;

sbit wei2=P2^4;

sbit wei3=P2^5;

sbit wei4=P2^6;

sbit pwmh1=P3^3;

sbit pwml1=P3^4;

sbit pwmh2=P3^5;

sbit pwml2=P3^6;

void delay(uint z);

void keyscan();

void disp();

void intc();

void dispfenlei();

void dispdingshi();

void dianji1();

void dianji2();

//=====================

void main()

{

intc();

while(1)

{

keyscan();

dispfenlei();

dispdingshi();

dianji1();

//dianji2();

}

}

//=================

void intc()

{

TMOD=0x11;

TH0=(65536-50000)/256;

TL0=(65536-50000)%256;

TH1=(65536-50000)/256;

TL1=(65536-50000)%256;

ET0=1;

ET1=1;

EA=1;

TR1=1;

pwml1=0;

pwml2=0;

}

//======================

void timer0()

{

TH0=(65536-50000)/256;

TL0=(65536-50000)%256;

aa++;

if(aa==20)

{

aa=0;

miao++;}

if(miao>60)

{ miao=0;

fen++;flagfen=1;}

if(fen==dingshi1)

{ TR0=0;

miao=0;

fen=0;

aa=0;}

}

//=================

void timer1()

{

TH1=(65536-1000)/256;

TL1=(65536-1000)%256;

aa++;

if(aa==10)

{aa=0;bb++;}

if(bb==100)

{bb=0;cc++;}

if(cc==60)

cc=0;

}

//==============

void keyscan()

{

if(fenglei==0)

delay(100);

if(fenglei==0)

{

while(!fenglei);

fenglei1++;

if(fenglei1>2)

fenglei1=0;

}

if(dingshi==0)

delay(100);

if(dingshi==0)

{

while(!dingshi);

TR0=1;

dingshi1++;

temp=dingshi1;

if(dingshi1>5)

dingshi1=0;

}

if(yaotu==0)

delay(100);

if(yaotu==0)

{

while(!yaotu);

yaotu1=~yaotu1;

}

if(dingshi1!=0)

TR0=1;

else

TR0=0;

}

//============

void dispfenlei()

{

P0=table[fenglei1];

P2=0xf7;

delay(5);

}

//=============

void dispdingshi()

{ if(flagfen==1)

{flagfen=0;

if(temp==0)

temp==0;

else

temp--;

}

P2=0xfb;

P0=table[0];

P2=0xfb;

delay(5);

P0=0xff;

P0=table[(temp*2)/10];

P2=0xfd;

delay(5);

P0=0xff;

P0=table[(temp*2)%10];

P2=0xfe;

delay(5);

P0=0xff;

}

//===============

void delay(uint z)

{

uint x;

uchar y;

for(x=0;x

for(y=0;y<100;y++);

}

//=========风机电机===============

void dianji1()

{

switch(fenglei1)

{

case 0: if(aa<=3)

pwmh1=1;

if(aa>3&&aa<=10)

pwmh1=0;break;

case 1: if(aa<=5)

pwmh1=1;

if(aa>5&&aa<=10)

pwmh1=0;

case 2: if(aa<=7)

pwmh1=1;

if(aa>7&&aa<=10)

pwmh1=0;

}

}

//=========摇头电机==================

void dianji2()

{

if(yaotu1==1)

{if(cc<30)

pwmh2=1;

else

pwmh2=0;}

else

pwmh2=0;

}

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