#define LED PD6

int8_t GPIO_init()
{
  DDRD|=(1 << LED);
  return 0;
}

int8_t ADC_init()
{
  
}

int8_t PWM_init(uint8_t duty_cycle)
{
	TCCR0A |= (1 << COM0A1);
  TCCR0A |= (1 << WGM01) | (1 << WGM00);
  TCCR0B |= (1 << CS01);

  OCR0A = duty_cycle;
	return 0;
}

int main()
{
  GPIO_init();
  PWM_init(10);
  while(1)
  {
    _delay_ms(100);
  }
  return 0;
}