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

#include "logging.h"

int main()
{
	log_init();

	DDRB |= _BV(PB2) | _BV(PB4);
	TCCR1 = _BV(CS10); // clk/1 = 1 MHz
	// TCCR1 = _BV(CS11) | _BV(CS13); // clk/512 = 2 kHz
	GTCCR = _BV(COM1B1) | _BV(PWM1B);
	OCR1C = 255;
	OCR1B = 9;

	ADCSRA = _BV(ADEN) | _BV(ADPS1) | _BV(ADPS0); // clk/8 = 125 kHz
	ADMUX = _BV(REFS1) | _BV(MUX1) | _BV(MUX0); // 1.1V ref., PB3 single-ended
	DIDR0 = _BV(ADC3D);
	ADCSRA |= _BV(ADSC);
	while (!(ADCSRA & _BV(ADIF)))
		;
	log_word(ADCW);
	ADCSRA |= _BV(ADSC);
	while (!(ADCSRA & _BV(ADIF)))
		;
	log_word(ADCW);
	log_flush();

	while(1) {
		PORTB |= _BV(PB2);
		_delay_ms(500);
		PORTB &= ~_BV(PB2);
		_delay_ms(1000);
	}
}