#define F_CPU 16000000UL
#include <avr/io.h>
#include <util/delay.h>
#include <avr/interrupt.h>
#include <stdlib.h>
#include "LCD_HD44780_IIC.h"
ISR(ADC_vect)
{
	unsigned int a = ADC >> 2;
	a *= a;
	OCR0A = a >> 8;
}
int main(void)
{
	
	int wartoscADC;
	ADMUX = 0b01000011;
	ADCSRA = 0b11101111;
	DDRD |= 0b01000000;
	TCCR0A |= 0b10000011;
	TCCR0B |= 0b10000010;
	sei();
	char napis[4];
	char data[24] = "Migajace diody"; 
	LCDinit();
	LCDhome();
	LCDstring(data, 14);
    while (1) 
    {
	int dlugosc1;
	wartoscADC = ADC;
	if(wartoscADC<1000)
	{
		if(wartoscADC<100)
		{
			if(wartoscADC<10)
			{
				dlugosc1=1;
			}
	else dlugosc1=2;
		}
		else dlugosc1=3;
	}
	else dlugosc1=4;
	itoa(wartoscADC, napis, 10);
	LCDGotoXY(0,1);
	LCDstring(napis, dlugosc1);
    }