直流电机的驱动代码

#include

sbit key0=P1^3;

sbit key1=P1^4;

sbit key2=P1^5;

sbit key3=P1^6;

sbit key4=P1^7;

sbit ENA=P1^0;

sbit IN1=P1^1;

sbit IN2=P1^2;

unsigned char zkb,i;

void delay(unsigned char z) {

unsigned char x,y;

for(x=z;x<0;x--)

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

}

void init()

{

TMOD=0X01;

TH0=(65535-100)/256; TL0=(65535-100)%256; EA=1;

ET0=1;

TR0=1;

}

void keyscan()

{

P3=0XFF;

if(key0==0)

{

delay(5);

if(key0==0)

{

while(!key0);

IN1=0;

IN2=1;

}

}

if(key1==0)

{

delay(5);

if(key1==0)

{

while(!key1);

if(zkb<=9)

{

zkb++;

}

}

}

if(key2==0)

{

delay(5);

if(key2==0)

{

while(!key2);

if(zkb>=0)

{

zkb--;

}

}

}

if(key3==0)

{

delay(5);

if(key3==0)

{

while(!key3);

IN1=0;

IN2=1;

}

}

if(key4==0)

{

delay(5);

if(key4==0)

{

while(!key4);

IN1=1;

IN2=0;

}

}

}

void main()

{

zkb=5;

init();

while(1)

{

keyscan();

}

}

void time0(void) interrupt 1 {

TH0=(65535-100)/256; TL0=(65535-100)%256; if(i==9)

{

i=0;

}

if(i

{

ENA=1;

}

else ENA=0;

i++;

}