#define pinLedR 38
#define pinLedG 47
#define pinPulsador 10

unsigned long t_actual, t_serial, t_wait;
volatile bool EstadoSerial = false;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(pinLedR, OUTPUT);
  pinMode(pinLedG, OUTPUT);
  pinMode(pinPulsador, INPUT_PULLUP);

  digitalWrite(pinLedR, LOW);
  digitalWrite(pinLedG, HIGH);
  t_serial = 0;
  t_wait = 0;
  EstadoSerial = false;
} 

void loop() {
  // put your main code here, to run repeatedly:
  t_actual = millis();
  if (EstadoSerial == false){
    if(Serial.available() > 0){
    String entrada = Serial.readStringUntil('/n');
    t_serial = t_actual;
    }
    else{
      t_wait = t_actual - t_serial;
      if(t_wait >= 10000){
        EstadoSerial = true;
      }
    }
  }
  else{
    digitalWrite(pinLedR, HIGH);
    digitalWrite(pinLedG, LOW);
    attachInterrupt(pinPulsador, alternarEstado, FALLING);
  }
  delay(10); // this speeds up the simulation
}

void ARDUINO_ISR_ATTR alternarEstado() { 
  EstadoSerial = !EstadoSerial;
  digitalWrite(pinLedR, LOW);
  digitalWrite(pinLedG, HIGH);
}