#define F_CPU 7372800UL

#include <avr/io.h>
#include "lcd.h"
#include <avr/interrupt.h>
#include <string.h>

uint8_t stotinke = 0;
uint8_t sekunde = 0;
uint8_t minute = 0;
uint8_t sati = 0;

void write2lcd()
{
	char string[16];

	sprintf(string, "%.2d:%.2d:%.2d", sati, minute, sekunde);

	lcd_clrscr();
	lcd_gotoxy(2,1);
	lcd_puts(string);
}

ISR(TIMER0_COMP_vect)
{
	stotinke++;
	if(stotinke == 100)
	{
		sekunde++;
		stotinke = 0;
	}
	if(sekunde == 60)
	{
		minute++;
		sekunde = 0;
	}
	if(minute == 60)
	{
		sati++;
		minute = 0;
	}
	if(sati == 24)
	{
		sati = 0;
	}
	write2lcd();
}

int main(void)
{
	DDRD = _BV(4);
	TCCR1A = _BV(COM1B1) | _BV(WGM10);
	TCCR1B = _BV(WGM12);
	OCR1B = 50;

	TCCR0 = _BV(WGM01) | _BV(CS00) | _BV(CS02);
	OCR0 = 71;

	TIMSK = _BV(OCIE0);
	sei();


	lcd_init(LCD_DISP_ON);
	lcd_clrscr();

	while (1)
	{
	}
}