Interfacing Stepper Motor with Starter AVR Using A4988 Revision as of 17:45, 13 April 2016 by Vaibhav Katkar (Talk | contribs) (diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Hookup

Code

	#include <avr/io.h>
	#include "delay.h"
	#define stepPin PD7 //Define Step pin
	#define dirPin PD6 //Define Direction pin
	#define Enable PD5 //Define Enable pin
	int main(void)
	{
	int x,y;
	DDRD |= (1<<5)|(1<<6)|(1<<7); // Configure PORTD5, PORTD6, PORTD7 as output
	PORTD &= ~(1<<5); // Enable driver
	while (1)
	{
	PORTD |= (1<<6); //Make PORTD6 high to rotate motor in clockwise direction
	for(x=0; x<4; x++) //Give 50 pulses to rotate stepper motor by 90 degree's in full step mode
	{
	for(y=0; y<50; y++)
	{
	PORTD |=(1<<7);
	DELAY_us(700);
	PORTD &=~(1<<7);
	DELAY_us(700);
	}
	DELAY_ms(1000);
	}
	PORTD &= ~(1<<6); //Make PORTD6 high to rotate motor in anti-clockwise direction
	for(x=0; x<4; x++) //Give 50 pulses to rotate stepper motor by 90 degree's in full step mode
	{
	for(y=0; y<50; y++)
	{
	PORTD |=(1<<7);
	DELAY_us(700);
	PORTD &=~(1<<7);
	DELAY_us(700);
	}
	DELAY_ms(1000);
	}
	}
	}

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