#include <ioavr.h>
#include <intrinsics.h>

int freq[] = {1132, 132, 66, 43, 32, 26, 21, 18, 16, 14, 12};
int i = 0;

void init_timer1_r(void)
{
  TCCR1A = 0x00;
  TCCR1B = 0x00;
  TCCR1A |= (1<<COM1A0); //Режим CTC
  TCCR1B = (1<<WGM12)|(1<<CS10);
  OCR1A=freq[i];
}

void init_timer1_l(void)
{
  TCCR1A = 0x00;
  TCCR1B = 0x00;
  TCCR1A |= (1<<COM1B0); //Режим CTC
  TCCR1B = (1<<WGM12)|(1<<CS10);
  OCR1B=freq[i];
}

void timer1_stop(void)
{
  OCR1A=0;
  OCR1B=0;
  __delay_cycles(8000000);
}

//#pragma vector=TIMER1_COMPA_vect

int main( void )
{

  DDRD = 0x00;
  DDRA = 0x00;
  PORTA = 0xFF;
  PORTD = 0xFF;
  DDRB = 0xFF;
  PORTB = 0xFF;
  //init_timer1_r();
  __enable_interrupt();
  while(1)
  {
    PORTB &= ~(1<<PB2);

    if ((PINA & (1<<PA1)) == 0) init_timer1_r();
    if ((PIND & (1<<PD1)) == 0) timer1_stop();
    if ((PIND & (1<<PD0)) == 0) init_timer1_l();
    

      if ((PINA & (1<<PA0)) == 0)
      {
        if (i != 10)
        {
          i++;
          OCR1A = freq[i];
          OCR1B = freq[i];
        }
      }
    
      if ((PIND & (1<<PD2)) == 0)
      {
        if (i != 0)
        {
          i--;
          OCR1A = freq[i];
          OCR1B = freq[i];
        }
      }
  }
}