#include "BluetoothSerial.h"

#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
#endif

BluetoothSerial BT;

void setup() {
  pinMode(22, OUTPUT);
  Serial.begin(9600);
  BT.begin(9600);
}

void loop() {
  if(BT.available()){
    char mensaje = BT.read();
    if(mensaje == 'A'){
       digitalWrite(22, HIGH);
       Serial.println("led encendido");
    }
    if(mensaje == 'B'){
       digitalWrite(22, LOW);
       Serial.println("led apagado");
    }
  }
}