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

volatile boolean guzik=false;
volatile int licznik=1;
volatile boolean kierunek=false;


ISR (PCINT0_vect){
 // cli();
 static unsigned long last_interupt=0;

 unsigned long  interrupt_time = millis();
  //Debug.print(F("milis = "));
 //  Debug.println(interrupt_time);
 // Debug.print(F("last = "));
  
 //Debug.println(last_interupt);
 if(interrupt_time-last_interupt>100){
    guzik = !guzik;
    licznik++;
    if(licznik%2==0){
      kierunek= !kierunek;
    }
 } else {
   //guzik=false;
 }
 last_interupt=interrupt_time;
 //digitalWrite(PB0, LOW);
 //Debug.print(F("Pressed! "));
 //Debug.println(licznik);


// Debug.println(guzik);

 //Debug.println(guzik);
 //sei();
}
void myconfigure() {
  cli();
 // Debug.begin();
 // Debug.println(F("Hello, TinyDebug!"));
   TCCR0A=0x00;             //Normal mode
 TCCR0B=0x00;
 TCCR0B |= (1 << CS01);
 //TCCR0B |= (1<<CS00);   //prescaling with 1024
 TIMSK |= (1 << TOIE0);
 TCNT0=0;
  GIMSK |= (1<<PCIE);
  PCMSK|=(1<<PCINT0);
  //MCUCR |= (1<<ISC01)|(1<<ISC00);
  DDRB |= (1 << PB1)|(1<<PB4);
  DDRB &= ~(1 << PB0);
  //TIMSK |= (1<<TOIE0);
  // put your setup code here, to run once:
 //pinMode(PB1, INPUT_PULLUP);
// attachInterrupt(PB0,przerwanie, FALLING);
 //pinMode(PB0, OUTPUT);
 sei();
}

int main() {
 // Debug.begin();
 // Debug.println(F("Hello, TinyDebug!"));
 //   DDRB |= (1 << PB1);
 // DDRB &= ~(1 << PB0);
 // GIMSK |= (1<<PCIE);
 // PCMSK|=(1<<PCINT0);

  myconfigure();
  while(1){
    //delayMicroseconds(100);
    if(digitalRead(PB0)==LOW){
      //if(guzik){
        if(kierunek){
          PORTB |= (1<<PB1);
          PORTB &= ~(1<<PB4);
          kierunek =1;
        }
        else{
          PORTB &= ~(1<<PB1);
          PORTB |= (1<<PB4);
          kierunek =0;
        }
    }    
      else {
      PORTB &= ~(1<<PB1);
      PORTB &= ~(1<<PB4);
      //guzik=false;
      }
    
  }
  
}