Picproje Elektronik Sitesi

/*
 * rotary_encoder.c
 *
 * Created: 09.06.2014 20:47:46
 *  Author: BERKAY
 */ 

#define F_CPU 16000000UL
#include <stdio.h>
#include <stdlib.h>
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include "lcd.h"

volatile int enc = 10;

void initInterrupts(void);

ISR(INT1_vect){
	
    if (bit_is_set(PINB,0))
    enc++;
	
    else 
    enc--;
	
}



void initInterrupts(void){
	
	MCUCR=(1<<ISC11); // düşen kenar

	GICR=(1<<INT1);
	
	sei();
}

FILE lcd_str = FDEV_SETUP_STREAM(lcd_putc, NULL, _FDEV_SETUP_WRITE);

int main(void)
{
	DDRD=0xf7;
	
	initInterrupts();
    
    lcd_init(LCD_DISP_ON);
	
	stdout = stdin = &lcd_str;
	
	lcd_clrscr();

	lcd_gotoxy(2,0);
	lcd_puts("Encoder Test");

	while (1){
		
		lcd_gotoxy(0,1);
		printf("%3d",enc);
		
		_delay_ms(10);
	}
	return 0;
}