//直流电机正反转C程序

#include

#define uchar unsigned char

#define uint unsigned int

sbit dula=P2^6;

sbit wela=P2^7;

sbit key4=P3^0;

sbit key1=P3^1;

//sbit set=P3^4;

bit flag=0;

uchar bai,shi,ge;

uint i,count,num;

uint disnum;//循环次数

uchar code tabledu[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,

0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0};

void delay_12MHZ_s(uint x)

{

uint j,k,i;

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

for(k=112;k>0;k--)

for(i=1114;i>0;i--);

}

void delay_ms(uint x)

{

uint j,k;

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

for(k=112;k>0;k--);

}

void display_sm()//三位数码管显示循环次数

{

bai=disnum/100;

shi=disnum%100/10;

ge=disnum%10;

dula=1;

if(bai==0)//如果百位是0则不显示百位

P0=0xff;

else

P0=tabledu[bai];

dula=0;

P0=0xff;

wela=1;

P0=0xfe;

wela=0;

delay_ms(10);

dula=1;

if(shi==0)//如果十位是0则不显示十位

P0=0xff;

else

P0=tabledu[shi];

dula=0;

P0=0xff;

wela=1;

P0=0xfd;

wela=0;

delay_ms(10);

dula=1;

P0=tabledu[ge];

dula=0;

P0=0xff;

wela=1;

P0=0xfb;

wela=0;

delay_ms(10);

}

void main()

{

//set=0;

flag=0;

TMOD=0x10;

TH1=(65536-50000)/256;

TL1=(65536-50000)%256;

EA=1;

ET1=1;

EX0=1;

IT0=1;

while(1)

{

display_sm();

if(flag!=0)

{

TR1=1;

while(1)

{

key1=0;

key4=1;

if((flag!=1)||(num>=240))//计时4分钟到或有中断产生结束正转

{

num=0;

TR1=0;

key4=1;

key1=1;

break;

}

}

if(flag!=0)

{

TR1=1;

while(1)

{

key4=0;

key1=1;

if((flag!=1)||(num>=60))// 计时1分钟到或有中断产生结束反转

{

num=0;

TR1=0;

key4=1;

key1=1;

break;

}

}

}

if(flag!=0)

{

delay_12MHZ_s(298);//电机停止约5分钟

num=0;

disnum++;//1个循环后(正转4分钟+反转1分钟+停止5分钟)显示数据加一

if(disnum==999)

disnum=0;

}

}

Else//没有按键按下显示电机停止

{

key1=1;

key4=1;

}

}

}

void int0 () interrupt 0//外部中断响应一次电机转动方向改变一次

{

EA=0;

delay_ms(2);

if(INT0==0)

{

flag=~flag;

num=0;

disnum=0;

}

while(!INT0);

delay_ms(2);

while(!INT0);

EA=1;

}

void time0 () interrupt 3//定时电机转动时间

{

TH1=(65536-50000)/256;

TL1=(655