ESP32 BLE Server mit mehrere Service

#include <BLEDevice.h>

#include <BLEUtils.h>

#include <BLEServer.h>

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

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

BLEServer *pServer;

BLEService *pService;

BLECharacteristic *pCharacteristic;

void setup()

{

  Serial.begin(115200);

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

  BLEDevice::init("ESP32-BLE-Server");

  pServer = BLEDevice::createServer();

  pService = pServer->createService(SERVICE_UUID);

  pCharacteristic = pService->createCharacteristic(

                                         CHARACTERISTIC_UUID,

                                         BLECharacteristic::PROPERTY_READ |

                                         BLECharacteristic::PROPERTY_WRITE

                                       );

  pCharacteristic->setValue("Hello, World!");

  pService->start();

  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();

}

void loop()

{

  std::string value = pCharacteristic->getValue();

  Serial.print("The new characteristic value is: ");

  Serial.println(value.c_str());

  delay(2000);

}