prs/Arduino/Digital Key v1/MAIN_ALL/WS_Bluetooth.cpp

#include "WS_Bluetooth.h"

BLEServer* pServer;                                                             // Used to represent a BLE server
BLECharacteristic* pTxCharacteristic;
BLECharacteristic* pRxCharacteristic;

/**********************************************************  Bluetooth   *********************************************************/

class MyServerCallbacks : public BLEServerCallbacks {                           //By overriding the onConnect() and onDisconnect() functions
    void onConnect(BLEServer* pServer) {                                        // When the Device is connected, "Device connected" is printed.
    RGB_Light(0, 0, 60); 

  }

  void onDisconnect(BLEServer* pServer) {                                       // "Device disconnected" will be printed when the device is disconnected
    RGB_Light(0, 0, 0);

    BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();                 // Re-broadcast so that the device can query
    pAdvertising->addServiceUUID(SERVICE_UUID);                                 // Re-broadcast so that the device can query
    pAdvertising->setScanResponse(true);                                        // Re-broadcast so that the device can query
    pAdvertising->setMinPreferred(0x06);                                        // Re-broadcast so that the device can query 
    pAdvertising->setMinPreferred(0x12);                                        // Re-broadcast so that the device can query 
    BLEDevice::startAdvertising();                                              // Re-broadcast so that the device can query 
    pRxCharacteristic->notify();                                                // Re-broadcast so that the device can query  
    pAdvertising->start();                                                      // Re-broadcast so that the device can query
  }
};

class MyRXCallback : public BLECharacteristicCallbacks 
{
  void onWrite(BLECharacteristic* pCharacteristic) 
  {          
    SetRelays(pCharacteristic->getValue());                 
    pRxCharacteristic->setValue("");  
  
  }

};

class MyTXCallback : public BLECharacteristicCallbacks 
{
  void onRead(BLECharacteristic* pCharacteristic, esp_ble_gatts_cb_param_t* param) 
  {                           
    pTxCharacteristic->setValue(GetRelays());  
  }

};


// void SetStatus(char* Data) {                                           // Send data using Bluetooth
//   if (Data != nullptr && strlen(Data) > 0) {
//     if (pServer->getConnectedCount() > 0) {  
//       std::string SendValue = Data;                       
//       pTxCharacteristic->setValue(SendValue);                                   // Set SendValue to the eigenvalue
//       pTxCharacteristic->notify();                                              // Sends a notification to all connected devices
//     }
//   }
// }

void Bluetooth_Init()
{
  /*************************************************************************
  Bluetooth
  *************************************************************************/
  BLEDevice::init("ESP32 S3 Relay 6CH");                                        // Initialize Bluetooth and start broadcasting                           
  pServer = BLEDevice::createServer();                                          
  pServer->setCallbacks(new MyServerCallbacks());                               
  BLEService* pService = pServer->createService(SERVICE_UUID);                  
  
  pTxCharacteristic = pService->createCharacteristic(
                                    TX_CHARACTERISTIC_UUID,
                                    BLECharacteristic:: PROPERTY_READ);         // The eigenvalues are readable and can be read by remote devices
  pTxCharacteristic->setCallbacks(new MyTXCallback());

  pRxCharacteristic = pService->createCharacteristic(
                                    RX_CHARACTERISTIC_UUID,
                                    BLECharacteristic::PROPERTY_WRITE);         // The eigenvalues are writable and can be written to by remote devices
  
  pRxCharacteristic->setCallbacks(new MyRXCallback());

  //pRxCharacteristic->setValue("Connected!");      
  pService->start();   

  BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();                   
  pAdvertising->addServiceUUID(SERVICE_UUID);                                   
  pAdvertising->setScanResponse(true);                                          
  pAdvertising->setMinPreferred(0x06);                                          
  pAdvertising->setMinPreferred(0x12);                                          
  BLEDevice::startAdvertising();                                                
  pRxCharacteristic->notify();                                                    
  pAdvertising->start();
 

}