#include <avr/io.h>
#include <util/delay.h>
#include <avr/interrupt.h>
#include "lcd_tat.h"
#include "lcd_tat.c"

#define F_CPU 8000000
#define MIKRO 1000000

void TIMER1_init();
ISR(TIMER1_OVF_vect);
void ADC_init();
ISR(ADC_vect);

uint32_t timer_multiplier;
uint16_t tot_overflow;

int main() {
	uint8_t pulse;
	DDRA |= (1 << 0);
	LCD_init(1,0,0);
	ADC_init();
	TIMER1_init();

	while(1) {
		/*ADCSRA |= (1 << ADEN)|(1 << ADPS1);*/

		if(pulse > 20) {
			LCD_SetCursorXY(0,0);
			LCD_WriteUINT(MIKRO/timer_multiplier);
			LCD_WriteChar(',');
			LCD_WriteUINT(MIKRO % timer_multiplier);
		}
		pulse++
	}
}

void TIMER1_init() {
	TCCR1B |= (1 << CS10)(1 << CS11);
	TCCR1B |= (WGM10);
	TIMSK  |= (1 << TOIE1);
}

ISR(TIMER1_OVF_vect) {
	tot_overflow++;
}

void ADC_init() {
	ADMUX = (1<<REFS0);
	ADCSRA = (1 << ADEN)|(1<<ADPS2)|(1<<ADPS1)|(1<<ADPS0);
}

ISR(ADC_vect) {
	uint16_t adc_data = ADCW;
	uint16_t adc_new = 0;
	uint16_t adc_old = 0;

	if(adc_new > 400) {
		adc_new = 1;
	}
	else {
		adc_new = 0;
	}

	if(adc_new != adc_old) {
		timer_multiplier = tot_overflow * 65356;
		timer_multiplier += TCNT1;
		timer_multiplier *= 2;
		timer_multiplier *= 8;
		tot_overflow = 0;
		TCNT1 = 0;
	}
	adc_old = adc_new;
}