ESP32_BLE_RCBController_Test.ino

/*
    Based on Neil Kolban example for IDF: https://github.com/nkolban/esp32-snippets/blob/master/cpp_utils/tests/BLE%20Tests/SampleWrite.cpp
    Ported to Arduino ESP32 by Evandro Copercini
*/
/*
    RCBController:
      https://itunes.apple.com/us/app/rcbcontroller/id689724127
      http://rcbcontroller.micutil.com/
*/

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

// See the following for generating UUIDs:
// https://www.uuidgenerator.net/

BLEUUID SERVICE_UUID        = BLEUUID((uint16_t)0xFFF0);  // RCBController Service UUID
BLEUUID CHARACTERISTIC_UUID = BLEUUID((uint16_t)0xFFF1);  // RCBController Characteristic UUID

class MyServerCallbacks: public BLEServerCallbacks {
    void onConnect(BLEServer* pServer) {
      printf("connectionCallback\n\r");
    };

    void onDisconnect(BLEServer* pServer) {
      printf("disconnectionCallback\n\r");
    }
};

class MyCallbacks: public BLECharacteristicCallbacks {
    void onWrite(BLECharacteristic *pCharacteristic) {
      std::string value = pCharacteristic->getValue();

      if (value.length() >= 10) {
          printf("Data received: length = %d, data = 0x",value.length());
          for(int x=0; x < value.length(); x++) {
              printf("%02x", value[x]);
          }
          printf("\n\r");
      }
    }
};

void setup() {
  Serial.begin(115200);

  // Create the BLE Device
  BLEDevice::init("MyESP32");
  
  // Create the BLE Server
  BLEServer *pServer = BLEDevice::createServer();
  pServer->setCallbacks(new MyServerCallbacks());

  // Create the BLE Service
  BLEService *pService = pServer->createService(SERVICE_UUID);

  // Create a BLE Characteristic
  BLECharacteristic *pCharacteristic = pService->createCharacteristic(
                                         CHARACTERISTIC_UUID,
                                         BLECharacteristic::PROPERTY_WRITE |
                                         BLECharacteristic::PROPERTY_WRITE_NR
                                       );

  pCharacteristic->setCallbacks(new MyCallbacks());

  // Start the service
  pService->start();

  // Start advertising
  BLEAdvertising *pAdvertising = pServer->getAdvertising();
  pAdvertising->start();
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(2000);
}