9 - 3 - 4

#define F_CPU 7372800UL

#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <string.h>

#include "lcd.h"

static uint16_t stot = 0;
static uint16_t sec = 0;
static uint16_t min = 0;
static uint16_t h = 0;
char str[16];
char str2[16];
static uint8_t flag = 0;
static uint8_t boja = 7;

ISR(TIMER0_COMP_vect){


	stot++;

	if(stot == 100){
		sec++;
		stot = 0;
	}
	if(sec == 60){
		min++;
		sec = 0;
	}
	if(min == 60){
		h++;
		min = 0;
	}
	if(h == 99){
		h = 0;
	}

	sprintf(str, "%02d:%02d:%02d", h, min, sec);
	//sprintf(str, "%02d:%02d:%02d", h, min, sec);
	lcd_clrscr();
	lcd_gotoxy(4, 0);
	lcd_puts(str);


	lcd_gotoxy(15, 1);
	lcd_puts(str2);

}

int main(void){

	DDRA = 0xff;
	DDRD = 0xff;
	//PORTA |= 0b10000000;		//jer je boja stavljena na PORTA na 7.mjesto pa moramo dovest 1 na tu poziciju
	PORTA |= _BV(boja);
	sprintf(str2, "R");

	DDRB = 0xf0;
	PORTB = 0xff;

	TCCR1A = _BV(COM1B1) | _BV(WGM10);
	TCCR1B = _BV(WGM12) | _BV(CS10);
	OCR1B = 20;

	TCCR0 = _BV(WGM01) | _BV(CS00) | _BV(CS02);
	OCR0 = 72;
	TIMSK = _BV(OCIE0);
	sei();


	lcd_init(LCD_DISP_ON);
	lcd_clrscr();

	//lcd_puts("da");

	while (1){

		if(bit_is_clear(PINB, 0)){
			_delay_ms(100);							//1000 0000 - 0100 0000 - 0010 0000 --> 1000 0000
													// 7 crv		6 zel		5 plava
			boja--;
			if(boja == 4){
				boja = 7;
			}

			PORTA &= 0x0f;
			PORTA |= _BV(boja);

			if(boja == 7)	sprintf(str2, "R");
			if(boja == 6)	sprintf(str2, "G");
			if(boja == 5)	sprintf(str2, "B");
		}

		if(bit_is_clear(PINB, 1)){
			_delay_ms(100);


		}

	}
}