四相步进电机proteus仿真及程序

  
#define forward  P2_0
#define backward P2_1
#define bujinjia P2_2
#define bujinjian P2_3
#define jiasu  P2_6
#define jiansu  P2_5
#define stop  P2_4
static unsigned int k=0;
static unsigned int j=0;
code char fward[4]={0x33,0x99,0xcc,0x66};
code char bward[4]={0x99,0x33,0x66,0xcc};
unsigned char timer0_tick=0,i=0,times=66,status=1;
void delay()
{
    unsigned char   i;
    for (i=500;i>0;i--);
}
//步进加速
jinjia()
 {
  int m;
  if (P2_2==0)
  delay();
  if(P2_2==1)
  {
   m=m+1;
   k++;
  }
  return  (k);
 }
//步进减速
jinjian()
 {
  int n;
  if (P2_3==0)
  delay();
  if(P2_3==1)
  {
    n=n+1;
   j++;
  }
  return (j);   
 }

/////////外部中断///////
static void timer0_isr(void) interrupt TF0_VECTOR using 1
{
 TR0=0;
 TL0=(time0count & 0x00ff);
 TH0=(time0count>>8);
 TR0=1;
 timer0_tick++;
 if(timer0_tick==times)
 {
  i++;
  if(i==4) i=0;
  timer0_tick=0;
  if(status==1)   P1=fward[i];
  if(status==0)   P1=bward[i];
     if(status==2)   P1=0x00;
 }
}
//时间中断
static void time0_initialize(void)
{
 EA=0;
 timer0_tick=0;
 TR0=0;
 TMOD=0x01;
 TL0=(time0count & 0x00ff);
 TH0=(time0count>>8);
 PT0=0;
 ET0=1;
 TR0=1;
 EA=1;
}
///主函数
void main(void)
{
 time0_initialize();
 while(1)
 {
  if(forward==0)  status=1;
  if(backward==0) status=0;
  if(stop==0)  status=2;
  jinjia();
  if(k==1)        times=61;
  if(k==2)        times=56;
  if(k==3)        times=51;
  if(k==4)        times=46;
  if(k==5)        times=41;
  if(k==6)        times=36;
  if(jiasu==0)    times=32;
  jinjian();
  if(j==1)        times=71;
  if(j==2)        times=76;
  if(j==3)        times=81;
  if(j==4)        times=86;
  if(j==5)        times=91;
  if(j==6)        times=96;
  if(jiansu==0)   times=100;
 }
}

以上便是4相步进电机的程序，下面是仿真图