const int ledPin = 22; // GPIO del led
const int pulsador = 35;
int se_pulsa = 0; int n=0; int a = 0; int b = 0;
void setup()
{
  // put your setup code here, to run once:
  pinMode(ledPin, OUTPUT);
  pinMode(pulsador, INPUT_PULLUP);
  Serial.begin(115200);
  delay(1000);
  Serial.println("Led parpadeante con pulsador");
}

void loop() 
{
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  se_pulsa = digitalRead(pulsador);
  if (se_pulsa==0)
  {
    n++;
    delay(1000);
  }
  a = n%2;
  if (Serial.read()== 'f')
  {
    digitalWrite(ledPin, LOW);
    b = 1;
  }
  if (a == 0 && b==0)
  {
    digitalWrite(ledPin, HIGH);
    Serial.println("Salida HIGH -> led APAGADO");
    delay(1000);
    digitalWrite(ledPin, LOW);
    Serial.println("Salida LOW -> led ENCENDIDO");
    delay(1000);
  }
  else if (a==1 && b==0)
  {
    digitalWrite(ledPin, HIGH);
    Serial.println("Salida HIGH -> led APAGADO");
    delay(1000);
  }
  else
  {
    digitalWrite(ledPin, LOW);
    Serial.println("Salida LOW -> led ENCENDIDO");
    delay(1000);
  }
}