c51_steptmoter_8255.c

步进电机驱动程序 正反转 加速减速等 C51编写的

#include <reg51.h>
#include <absacc.h>
unsigned char idata plus[9]=
         {0x09,0x01,0x03,0x02,0x06,0x04,0x0c,0x08,0x00}; //正转
unsigned char idata minu[9]=
         {0x09,0x08,0x0c,0x04,0x06,0x02,0x03,0x01,0x00}; //反转
unsigned char idata *x;
unsigned int DL=10000;         // 转速控制
bit DR=0;                      // 转向控制

void initial()
{
  EA=1;
  EX0=1;
  EX1=1;
  IT0=1;
  IT1=1;
}

void control(bit cf)
{
  if(cf==0)  x=&plus[0];
  else  x=&minu[0];
  TMOD=0x01;
  TH0=-DL/256;
  TL0=-DL%256;
  TR0=1;
}

void int_0() interrupt 0 using 0
{ P2=(P2&0x7f)|(~(P2&0x80)); }

void SpeedKey(unsigned char IntFlag)
{
  if(IntFlag==0x01)
  {
    ET0=~ET0;
    control(DR);
    if(ET0==1)  P2=P2&0xf7;
    else  P2=P2|0x08;
  }
  else if(IntFlag==0x02)
  {
    DR=~DR;
    control(DR);
    if(DR)  P2=P2&0xfb;
    else  P2=P2|0x04;
  }
  else if(IntFlag==0x04)
  {
    DL+=DL/25;
    if(DL>55000)
    {
      DL=55000;
      P2=(P2|0x20)&0xdf;
    }
    P2=(P2|0x11)&0xfd;
  }
  else if(IntFlag==0x08)
  {
    DL-=DL/25;
    if(DL<900)
    {
      DL=900;
      P2=(P2|0x01)&0xef;
    }
    P2=(P2|0x22)&0xfe;
  }
  else  P2=0xff;
}

void int_1() interrupt 2 using 1
{
  P2=(P2&0xbf)|(~(P2&0x40));
//  SpeedKey(~P0);
}

void step_time(void) interrupt 1 using 2
{
  P1=*x++;
  if(*x==0)  x=x-8;
  TH0=-DL/256;
  TL0=-DL%256;
}

void main(void)
{
  initial();
  P2=0xff;
  P0=0xff;
  while(1)
  {  }
}