// the setup function runs once when you press reset or power the board

const int ledpurpura = 12;
const int boton = 2;
/*
int 
float
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*/


void parpadear(int pin){
   digitalWrite(pin, HIGH);   // turn the LED on (HIGH is the voltage level)
   delay(3000);                       // wait for a second
   digitalWrite(pin, LOW);    // turn the LED off by making the voltage LOW
   delay(3000);                       // wait for a second
}


void setup() { //se ejecuta una sola vez
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(ledpurpura, OUTPUT);
  pinMode(boton, INPUT_PULLUP); //declara un pin como entrada y activa la resistencia pullup interna para ese pin
}

// the loop function runs over and over again forever
void loop() { //ciclo repetitivo o bucle
  
  parpadear(LED_BUILTIN);
  
   if (digitalRead(boton) == LOW){  //POOLLING

        while(true){  //bucle infinito
          parpadear(ledpurpura);
         
          if (digitalRead(boton) == LOW){
            break;
          }
         
        }

   }   
      
      

 /* for(;;){


  } */

}