#include <BLEDevice.h>
#include <BLEServer.h>
#include <BLEUtils.h>
#include <BLE2902.h>

// Define the service and characteristic UUIDs
#define SERVICE_UUID "d41f5c92-a147-4be1-9af2-21ddeee63087"
#define CHARACTERISTIC_UUID "57f50f8a-80d4-4694-a151-c1a081f4f99a"

BLEServer* pServer = NULL;
BLECharacteristic* pCharacteristic = NULL;

void setup() {
  // Create the BLE Device
  BLEDevice::init("ESP32 BLE Server");

  // Create the BLE Server
  pServer = BLEDevice::createServer();
  
  // Create the BLE Service
  BLEService *pService = pServer->createService(SERVICE_UUID);
  
  // Create the BLE Characteristic
  pCharacteristic = pService->createCharacteristic(
                      CHARACTERISTIC_UUID,
                      BLECharacteristic::PROPERTY_READ
                    );
  
  // Add a descriptor
  pCharacteristic->addDescriptor(new BLE2902());
  
  // Start the service
  pService->start();
  
  // Start advertising
  pServer->getAdvertising()->start();
}

void loop() {
  // Nothing to do here
}