/*

    Based on Neil Kolban example for IDF: https://github.com/nkolban/esp32-snippets/blob/master/cpp_utils/tests/BLE%20Tests/SampleServer.cpp

    Ported to Arduino ESP32 by Evandro Copercini

    updates by chegewara

*/

#include

#include

#include

// See the following for generating UUIDs:

// https://www.uuidgenerator.net/

#define SERVICE_UUID        "4fafc201-1fb5-459e-8fcc-c5c9c331914b"

#define CHARACTERISTIC_UUID "beb5483e-36e1-4688-b7f5-ea07361b26a8"

void setup() {

  Serial.begin(115200);

  Serial.println("Starting BLE work!");

  BLEDevice::init("Long name works now");

  BLEServer *pServer = BLEDevice::createServer();

  BLEService *pService = pServer->createService(SERVICE_UUID);

  BLECharacteristic *pCharacteristic = pService->createCharacteristic(

                                         CHARACTERISTIC_UUID,

                                         BLECharacteristic::PROPERTY_READ |

                                         BLECharacteristic::PROPERTY_WRITE

                                       );

  pCharacteristic->setValue("Hello World says Neil");

  pService->start();

  // BLEAdvertising *pAdvertising = pServer->getAdvertising();  // this still is working for backward compatibility

  BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();

  pAdvertising->addServiceUUID(SERVICE_UUID);

  pAdvertising->setScanResponse(true);

  pAdvertising->setMinPreferred(0x06);  // functions that help with iPhone connections issue

  pAdvertising->setMinPreferred(0x12);

  BLEDevice::startAdvertising();

  Serial.println("Characteristic defined! Now you can read it in your phone!");

}

void loop() {

  // put your main code here, to run repeatedly:

  delay(2000);

}