inv-sw-32u4/src/inverter.c

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

#include "include/uart.h"
#include "include/timer.h"


uint8_t sec = 0;
uint16_t cnt = 0;

int main()
{
	/* With this MCU frequency, it is 38,4k baud */
	uart_init(12);

	/* Make PB2 an output pin */
	DDRB |= (1 << DDB2);

	initCtcTimer0();

	sei();

	while (1) {

		if ((PORTB & (1 << PB2)) > 1)
		{
			_delay_ms(1);
			PORTB &= ~(1 << PB2);
		}

		if (cnt == 65500) {
			printf("%u\n\r", TCNT0);
			cnt = 0;
		}	

		cnt++;
	}

	return 0;
}

ISR(TIMER0_COMPA_vect)
{
	PORTB |= (1 << PB2);
}