//  ATtiny13A

#define F_CPU 8980000
#include <avr/io.h>
#include <util/delay.h>


#define ARR_LEN 4
#define ARR_AMO 4 // число строк (массивов пауз)
#define FREQ_HALF_T 14
#define PACK_LEN_AMO 50
#define PACK_LEN_T PACK_LEN_AMO * 2 * FREQ_HALF_T
#define AUTO_REPLAY 1100


// для Pinnacle
void _delay_us_10060() { _delay_us(10060 - PACK_LEN_T); }
void _delay_us_3368()  { _delay_us(3368  - PACK_LEN_T); }
void _delay_us_5876()  { _delay_us(5876  - PACK_LEN_T); }
//
void _delay_us_I()     { _delay_us(11500 - PACK_LEN_T); }
void _delay_us_II()    { _delay_us(2500  - PACK_LEN_T); }

void (*p_delay[ARR_AMO][ARR_LEN])() = 
{
  {_delay_us_10060, _delay_us_3368, _delay_us_3368, _delay_us_5876},
  
  {_delay_us_II, _delay_us_II, _delay_us_II, _delay_us_I},
  {_delay_us_I,  _delay_us_I,  _delay_us_I,  _delay_us_I},
  {_delay_us_II, _delay_us_II, _delay_us_II, _delay_us_II}
};


void transmit_high()
{
  for (uint8_t i = 0; i < PACK_LEN_AMO; i++) 
  {
    PORTB |= (1 << PB2); 
    _delay_us(FREQ_HALF_T); 
    PORTB &= ~(1 << PB2); 
    _delay_us(FREQ_HALF_T); 
  }  
}


void setup()
{
  _delay_ms(500); 
  
  DDRB  = 0xFF; 
  PORTB = 0x00; 
  // на ввод
  DDRB  &= ~(1 << DDB0);
  DDRB  &= ~(1 << DDB1);
  DDRB  &= ~(1 << DDB3);
  DDRB  &= ~(1 << DDB4);
  // притяжка
  PORTB |=  (1 << PB0);
  PORTB |=  (1 << PB1);
  PORTB |=  (1 << PB3);
  PORTB |=  (1 << PB4);
}


void transmit_token(uint8_t sighal_n)
{
  for(uint8_t i = 0; i < ARR_LEN; i++)
  {
    transmit_high();
    (*p_delay[sighal_n][i])(); 
  }
  
  transmit_high();
  
  _delay_ms(AUTO_REPLAY);
}


int main(void)
{
  setup();

  while (1)
  {
    if      (!(PINB & (1 << PB0))) transmit_token(0);
    else if (!(PINB & (1 << PB1))) transmit_token(1);
    else if (!(PINB & (1 << PB3))) transmit_token(2);
    else if (!(PINB & (1 << PB4))) transmit_token(3);
  }
}