#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include "avr-hd44780/lcd.h"

volatile uint8_t counter = 0;

void enc_init(){
    PORTC |= (1<<2) | (1 << 3);
    PCICR |= (1<<PCIE1);
    PCMSK1 |= (1<<PCINT10);
}

int main(void){
    DDRC |= 1<<0;
    DDRC |= 1<<1;
    DDRD |= 1<<7;

    PORTC ^= 1<<0;
    _delay_ms(1000);
    PORTC ^= 1<<1;

    lcd_init();
    lcd_on();
    lcd_clear();
    lcd_puts("test");

    enc_init();
    sei();

    while(1){
	lcd_clear();
	lcd_printf("%d", counter);
	_delay_ms(50);
    }

}

ISR(PCINT1_vect){
    if(PINC & (1<<2)){
	if(PINC & (1<<3))
	    counter--;
	else if(!(PINC & (1<<3)))
	    counter++;
    }else{
	if(PINC & (1<<3))
	    counter++;
	else if(!(PINC & (1<<3)))
	    counter--;

    }
}