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

uint8_t cc = 1;
uint8_t timer0_OVFs;

ISR(INT0_vect){
	TCCR0 ^= (1<<CS01);
	if(cc){
		cc--;
	}else{
		TCCR0 = 0x00;
		GICR &= ~(1<<INT0);
		lcd_printString(lcd_formatString(lcd_convertIntToDecString((TCNT0/2)+128*timer0_OVFs,1),2,0));
	}
}

ISR(TIMER0_OVF_vect){
	timer0_OVFs++;
}

int main(void){
	
	DDRD |= (1<<PD2);
	
	MCUCR |= (1<<ISC01)|(1<<ISC00);
	GICR |= (1<<INT0);
	
	TIMSK |= (1<<TOIE0);
	
	lcd_init();
	
	sei();
	
	PORTD |= (1<<PD2);
	PORTD &= ~(1<<PD2);
	PORTD |= (1<<PD2);
	
    while(1){
    }
	
}