1单片机电机驱动程序

201011106 · 发表于 2011-11-13 16:54:18

1单片机电机驱动程序
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar num,High_num=1000,Low_num=3000;
sbit pulse=P1^7;
sbit UP=P1^3;
sbit DOWN=P1^4;
sbit reversal=P2^3;
sbit foreward=P2^4;
void delayms(uint xms)
{
uint i,j;
  for(i=xms;i>0;i--)
for(j=110;j>0;j--);
}

void keyscan()
{
if(UP==0)
{
   delayms(10);
   if(UP==0)
   {
      num++;
   if(num>4)
   num=0;
   while(UP==0);
}
       }

   if(DOWN==0)
{
   delayms(10);
   if(DOWN==0)
   {
      if(num!=0)
     num--;
   else
   num=0;
   while(DOWN==0);
}
       }
}

void dispose()
{
switch(num)
{
case 0:
   High_num=500;
   Low_num=500;
   break;
case 1:
      High_num=100;
   Low_num=300;
   break;

case 2:
      High_num=200;
   Low_num=200;
   break;

case 3:
      High_num=300;
   Low_num=100;
   break;

case 4:
      High_num=400;
   Low_num=500;
   break;
}
}