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

uint16_t temp = 0;

void writeLcd(uint16_t adc)
{
	lcd_clrscr();

	char adcStr[16];
	itoa(adc, adcStr, 10);
	lcd_puts(adcStr);
}

ISR(ADC_vect)
{
	temp = ((ADC * 5.0/1024) - 0.5) * 1000/100;
	writeLcd(temp);
}

int main(void)
{
    DDRD = _BV(4);

	TCCR1A = _BV(COM1B1) | _BV(WGM10);
	TCCR1B = _BV(WGM12) | _BV(CS11);
	OCR1B = 64;

	lcd_init(LCD_DISP_ON);

	ADMUX = _BV(REFS0);
	ADCSRA = _BV(ADEN) | _BV(ADIE) | _BV(ADPS1) | _BV(ADPS2);
	sei();

    while (1)
    {
		ADCSRA |= _BV(ADSC);
		_delay_ms(1000);
    }
}