51单片机控制步进电机正反转的程序，同时还能实现调速。 -

#include ”reg51.h“
#include “intrins.h”
#define uchar unsigned char
#define uint unsigned int
#define delayNOP(); {_nop_();_nop_();_nop_();_nop_();};
unsigned char code FFW[8]={0xfe,0xfc,0xfd,0xf9,0xfb,0xf3,0xf7,0xf6};
unsigned char code REV[8]={0xf6,0xf7,0xf3,0xfb,0xf9,0xfd,0xfc,0xfe};
//unsigned char code FFW[8]={0x01,0x03,0x02,0x06,0x04,0x0c,0x08,0x09};
//unsigned char code REV[8]={0x09,0x08,0x0c,0x04,0x06,0x02,0x03,0x01};
sbit K1 = P3^2;
sbit K2 = P3^3;
sbit K3 = P3^4;
sbit K4 = P3^5;
sbit LCD_RS = P2^0;
sbit LCD_RW = P2^1;
sbit LCD_EN = P2^2;
bit on_off=0;
bit direction=1;
bit rate_dr=1;
bit snum_dr=1;
uchar code cdis1[ ] = {"NO.0738230126 "};
uchar code cdis2[ ] = {" 2012/5/24"};
uchar code cdis3[ ] = {" STOP "};
uchar code cdis4[ ] = {"NUM: RATE: "};
uchar code cdis5[ ] = {" RUNNING "};
uchar m,v=0,q=0;
uchar number=0,number1=0;
uchar snum=20,snum1=20;
uchar rate=3;
uchar data_temp,data_temP0,data_temp2;
void delay(uint t)
{
uchar k;
while(t--)
{
for(k=0; k<124; k++)
{ }
}
}
void delayB(uchar x)
{
uchar i;
while(x--)
{
for (i=0; i<13; i++)
{ }
}
}
bit lcd_busy()
{
bit result;
LCD_RS = 0;
LCD_RW = 1;
LCD_EN = 1;
delayNOP();
result = (bit)(P0&0x80);
LCD_EN = 0;
return(result);
}
void lcd_wcmd(uchar cmd)
{
while(lcd_busy());
LCD_RS = 0;
LCD_RW = 0;
LCD_EN = 0;
_nop_();
_nop_();
P0 = cmd;
delayNOP();
LCD_EN = 1;
delayNOP();
LCD_EN = 0;
}
void lcd_wdat(uchar dat)
{
while(lcd_busy());
LCD_RS = 1;
LCD_RW = 0;
LCD_EN = 0;
P0 = dat;
delayNOP();
LCD_EN = 1;
delayNOP();
LCD_EN = 0;
}
void lcd_init()
{
delay(30);
lcd_wcmd(0x38);
delay(5);
lcd_wcmd(0x38);
delay(5);
lcd_wcmd(0x38);
delay(5);
lcd_wcmd(0x0c);
delay(5);
lcd_wcmd(0x06);
delay(5);
lcd_wcmd(0x01);
delay(5);
}
void lcd_pos(uchar pos)
{
lcd_wcmd(pos | 0x80);
}
void LCD_init_DIS()
{
delay(10);
lcd_init();
lcd_pos(0);
m = 0;
while(cdis1[m] != '\0')
{
lcd_wdat(cdis1[m]);
m++;
}
lcd_pos(0x40);
m = 0;
while(cdis2[m] != '\0')
{
lcd_wdat(cdis2[m]);
m++;
}
delay(3000);
lcd_pos(0);
m = 0;
while(cdis3[m] != '\0')
{
lcd_wdat(cdis3[m]);
m++;
}
lcd_pos(0x40);
m = 0;
while(cdis4[m] != '\0')
{
lcd_wdat(cdis4[m]);
m++;
}
for(m=0;m<2;m++)
{
lcd_pos(0x0c+m);
lcd_wdat(0x3e);
}
}
void data_conv()
{
data_temP0=data_temp/10;
if(data_temP0==0)
{data_temP0=0x20;}
else
{data_temP0=data_temP0+0x30;}
data_temp2=data_temp;
data_temp2=data_temp2+0x30;
}
void data_dis()
{
data_temp = snum;
data_conv();
lcd_pos(0x44);
lcd_wdat(data_temP0);
lcd_pos(0x45);
lcd_wdat(data_temp2);
data_temp = rate;
data_conv();
lcd_pos(0x4d);
lcd_wdat(data_temP0);
lcd_pos(0x4e);
lcd_wdat(data_temp2);
}
void motor_DR()
{
if(direction==1)
{ for(m=0;m<2;m++)
{
lcd_pos(0x0c+m);
lcd_wdat(0x3e);
}
}
else
{ for(m=0;m<2;m++)
{
lcd_pos(0x0c+m);
lcd_wdat(0x3c);
}
}
}
void motor_RUN()
{
if(on_off==1)
{ TR0=1;
lcd_pos(0);
m = 0;
while(cdis5[m] != '\0')
{ lcd_wdat(cdis5[m]);
m++; }
motor_DR();
}
else
{ TR0=0; P0 =0x0f;
lcd_pos(0)
m = 0;
while(cdis3[m] != '\0')
{ lcd_wdat(cdis3[m]);
m++; }
motor_DR();
snum=snum1;
number1=0;
}
}
main()
{
LCD_init_DIS();
TMOD = 0x01;
TL0 = 0x33;
TH0 = 0xf5;
EA = 1;
ET0 = 1;
P1=0;
while(1)
{
if(K1==0)
{
//beep();
while(K1==0)
on_off=~on_off;
motor_RUN();
} //K1 end
if(K2==0)
{
if(snum_dr==1)
{ snum++;
snum1=snum;
if(snum==0x14)
{ snum_dr=~snum_dr;}
}
else
{snum--;
snum1=snum;
if(snum==0x01)
{ snum_dr=~snum_dr; }
}
} //K2 end
if(K3==0)
{
direction=~direction;
motor_DR();
}//K3 end
if(K4==0)
{
if(rate_dr==1)
{ rate++;
if(rate==0x10)
{ rate_dr=~rate_dr;}
}
else
{
rate--;
if(rate==0x01)
{ rate_dr=~rate_dr; }
}
} //K4 end
if(number1==snum1
{ number1=0;
on_off=0;
TR0=0;
snum=snum1;
P1=0x0f;
motor_RUN();
}
data_dis();
} // while(1) end
} //main end
void motor_onoff() interrupt 1
{
TL0 = 0x33;
TH0 = 0xf5;
q++;
if(q < rate)
{ return; }
else
{ q=0;
number++
if(number==64)
{ snum--;
number=0;
number1++;
if(direction==1
{ if(v<8)
{P1 = FFW[v];v++;
if(v==8)
{ v=0; }
}
else
{ if(v<8)
{P1 = REV[v];v++;
if(v==8)
{ v=0; }
}
}
}

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