AVR单片机驱动二相步进电机(单极驱动)简易程序,带串口控制。

编译器为ICC6.31A;

#include"iom16v.h"

#include"macros.h"

#define uint unsigned int

#define uchar unsigned char

#pragma interrupt_handler usart:14

uchar i;

uchar  const *p;

uchar zf=1; //电机正反转标志;

uchar  k1=5;

//uchar const timer2dath[10]={};

//uchar const timer2datl[10]={};

unsigned char const suzhu1[16]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,

0x77,0x7c,0x39,0x5e,0x79,0x71};

uchar const bjdjdat[48]={0x80,0xa0,0x20,0x60,0x40,0x50,0x10,0x90,

0x80,0x90,0x10,0x50,0x40,0x60,0x20,0xa0,

0x80,0x20,0x40,0x10,0x80,0x20,0x40,0x10,

0x80,0x10,0x40,0x20,0x80,0x10,0x40,0x20,

0xa0,0x60,0x50,0x90,0xa0,0x60,0x50,0x90,

0xa0,0x90,0x50,0x60,0xa0,0x90,0x50,0x60

}；//设置单片机IO口高低电平数据组，用以驱动步进电机的各相按需通电；

uint const timer1dat[11]={36000,23000,13000,7000,4300,3000,2500,2100,1800,1700,0};//定时器1定时数据，用于控制电机的转速，定时越短转速越快；

uchar uartdat[4]={0,0,0,0}; //划出串行通信时所需的寄存器；

uchar add,open,jslopen;

void siansi(unsigned int dat,unsigned char bit,unsigned int time)//数码管显示函数

{

//PORTA&=~BIT(4);

PORTC&=~BIT(7);

PORTA&=~0x17;

PORTB=suzhu1[dat];

PORTA|=bit ;

PORTA|=BIT(4);

PORTC|=BIT(7);

while(time--);

}

void ioinit()//IO口初始化；

{

DDRB=0XFF;

DDRD=0XF3;

DDRA|=0X17;

DDRC|=0X80;

PORTD|=0X0f;

}

void usart()//串行接收中断处理；

{

uchar a;

a=UDR;

if(a==168)

{

open=1;

add=0;

}

if(a==138&&open)

{

open=0;

uartdat[add]=a;

jslopen=1;

}

if(open)

{

uartdat[add]=a;

add++;

}

}

void jsl()//一帧数据处理；

{

uchar j;

jslopen=0;

switch(uartdat[1])

{

case 1:

if(uartdat[2])TIMSK|=0X04;

else TIMSK&=~0X04;

break;

case 2:

if(uartdat[2]>0)

k1=uartdat[2]-1;

else k1=10;

break;

case 3:

if(uartdat[2]&&!zf)p=p-8,zf=1;

if(!uartdat[2]&&zf)p=p+8,zf=0;

break;

case 4:

if(uartdat[2]==1&&zf)p=bjdjdat;

if(uartdat[2]==1&&!zf)p=bjdjdat+8;

if(uartdat[2]==2&&zf)p=bjdjdat+16;

if(uartdat[2]==2&&!zf)p=bjdjdat+24;

if(uartdat[2]==3&&zf)p=bjdjdat+32;

if(uartdat[2]==3&&!zf)p=bjdjdat+40;

break;

}

for(j=0;j<4;j++)

{

/* 等待发送缓冲器为空 */

while ( !( UCSRA & (1<

;

/* 将数据放入缓冲器，发送数据 */

UDR=uartdat[j];

}

}

void uartinit()//串行口初始化；

{

UCSRA=0X00;

UCSRB=0X98;

UCSRC=0X86;

UBRRH=0X00;

UBRRL=71;

SREG|=0X80;

}

#pragma interrupt_handler timer1:9

void timer1() //定时器1中断处理；

{

TCNT1=65536-timer1dat[k1];

i++;

if(i>7)i=0;

PORTD&=0X0F;

if(k1==10)return;

PORTD|=p[i];

}

void timer1init()

{

TCCR1A=0X00;

TCCR1B=0X02;

TIMSK|=0X04;

}

void main(void)//主程序；

{

p=bjdjdat;

uartinit();

ioinit();

timer1init();

while(1)

{

siansi(timer1dat[k1]%10,7,1000);

siansi(timer1dat[k1]%100/10,6,1000);

siansi(timer1dat[k1]%1000/100,5,1000);

siansi(timer1dat[k1]%10000/1000,4,1000);

siansi(timer1dat[k1]/10000,3,1000);

if(zf)siansi(14,2,1000);

else siansi(15,2,1000);

if(jslopen)jsl();

}

}