步进机问题

只看该作者 · 2017-11-17 10:44

#include <reg52.h>
#define DataPort P0
sbit LATCH1=P2^2;
sbit LATCH2=P2^3;

unsigned char code dofly_DuanMa[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
unsigned char code dofly_WeiMa[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char TempData[8];

sbit A1=P1^0;
sbit B1=P1^1;
sbit C1=P1^2;
sbit D1=P1^3;

#define Coil_AB1 {A1=1;B1=1;C1=0;D1=0;}
#define Coil_BC1 {A1=0;B1=1;C1=1;D1=0;}
#define Coil_CD1 {A1=0;B1=0;C1=1;D1=1;}
#define Coil_DA1 {A1=1;B1=0;C1=0;D1=1;}
#define Coil_A1 {A1=1;B1=0;C1=0;D1=0;}
#define Coil_B1 {A1=0;B1=1;C1=0;D1=0;}
#define Coil_C1 {A1=0;B1=0;C1=1;D1=0;}
#define Coil_D1 {A1=0;B1=0;C1=0;D1=1;}
#define Coil_OFF {A1=0;B1=0;C1=0;D1=0;}

unsigned char Speed;

void Display(unsigned char FirstBit,unsigned char Num);
void Init_Timer0(void);
void DelayUs2x(unsigned char t)
{
while(--t);
}

void DelayMs(unsigned char t)
{

while(t--)
{
   DelayUs2x(245);
   DelayUs2x(245);
}
}

void main()
{
unsigned int i=512;

Init_Timer0();

EA=1;
EX0=1;
IT0=1;

Speed=3;
TempData[0]=dofly_DuanMa[Speed/10];
TempData[1]=dofly_DuanMa[Speed%10];
Coil_OFF;
while(i--)
  {  Coil_A1
   DelayMs(Speed);
   Coil_AB1
   DelayMs(Speed);

   Coil_B1
   DelayMs(Speed);
   Coil_BC1
   DelayMs(Speed);
   Coil_C1
   DelayMs(Speed);
   Coil_CD1
   DelayMs(Speed);
   Coil_D1
   DelayMs(Speed);
   Coil_DA1
   DelayMs(Speed);
  }
}

void ISR_INT0(void) interrupt 0
{

if(!INT0)
{
DelayMs(10);
if(!INT0)
   {
   Speed++;
   if(Speed==20)
   Speed=3;
      TempData[0]=dofly_DuanMa[Speed/10];
   TempData[1]=dofly_DuanMa[Speed%10];
   }
}
}

void Display(unsigned char FirstBit,unsigned char Num)
{
   static unsigned char i=0;


   DataPort=0;
   LATCH1=1;
   LATCH1=0;

   DataPort=dofly_WeiMa[i+FirstBit];
   LATCH2=1;
   LATCH2=0;

   DataPort=TempData[i];
   LATCH1=1;
   LATCH1=0;

   i++;
   if(i==Num)
      i=0;

}

void Init_Timer0(void)
{
TMOD |= 0x01;
EA=1;
ET0=1;
TR0=1;
PT0=1;
}

void Timer0_isr(void) interrupt 1
{
TH0=(65536-2000)/256;
TL0=(65536-2000)%256;

Display(0,8);

}

每次按键调整Speed大小后过一段时间步进机就自动复位初始Speed，这是哪里出错了吗