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

#include "BLEUUID.h"
#include "BLEAdvertising.h"
#include "WS_Bluetooth.h"
#include <ArduinoJson.h>

BLEServer* pServer;

BLEService* pConfigService;
BLECharacteristic* pConfigCharacteristic;

BLEService* pControlService;
BLECharacteristic* pControlCharacteristic;

bool requiresrestart = false;
bool isBluetoothConnected = false;

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

class ServerCallbacks : public BLEServerCallbacks {
                             
  void onConnect(BLEServer* pServer) {                                        
    BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();   
    pAdvertising->stop();
    isBluetoothConnected = true;  
  }

  void onDisconnect(BLEServer* pServer) {                              

    isBluetoothConnected = false;

    BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();  

    // String devicename = GetDeviceName().substring(0,30);
    // BLEAdvertisementData data;
    // data.setName(devicename);

    // pAdvertising->addServiceUUID(CONFIG_SERVICE_UUID);   
    // if (pControlService)   
    //   pAdvertising->addServiceUUID(pControlService->getUUID());

    // pAdvertising->setScanResponse(true);                                        
    // pAdvertising->setMinPreferred(0x06);                                        
    // pAdvertising->setMinPreferred(0x12);                                        

    BLEDevice::startAdvertising();                                               
    pConfigCharacteristic->notify();  
    if (pControlService)   
      pControlCharacteristic->notify();                                                
    pAdvertising->start();  

    if (requiresrestart)
      Restart();

  }
};

class ConfigCharacteristicCallback : public BLECharacteristicCallbacks 
{
  
  // char json[] = "{ \"warning\" : "", \"contact\" : "" }"
  void onRead(BLECharacteristic* pCharacteristic, esp_ble_gatts_cb_param_t* param) 
  { 
    Serial.println("into writeConfig");
    
    JsonDocument doc;
    doc["warning"] = GetWarningNotice();
    doc["contact"] = GetContactInfo();
    String json = "";
    serializeJson(doc,json);

    Serial.println("serialised");
    Serial.println(json);
    pCharacteristic->setValue(json);  
    Serial.println("done");
  }

// char json[] = "{ \"name\" : "PRS Digital Key", \"warning\" : "", \"contact\" : "" \"id\" : "00000000-0000-0000-0000-000000000000" }"
  void onWrite(BLECharacteristic* pCharacteristic) 
  {          
    String json = pCharacteristic->getValue();
    
    Serial.println(json);
    
    JsonDocument doc;
    deserializeJson(doc, json);

    String name = doc["name"];
    String warning = doc["warning"];
    String contact = doc["contact"];
    String equipmentid = doc["id"];
    Configure(name,warning,contact,equipmentid);

    pCharacteristic->setValue("");  
    requiresrestart = true;
  }

};

// char json[] = "{ \"Relay00\" : 15000, \"Relay01\" : 0, \"Relay02\" : 0, \"Relay03\" : 0, \"Relay04\" : 0, \"Relay05\" : 0 }"
class ControlCharacteristicCallback : public BLECharacteristicCallbacks 
{
  // char json[] = "{\"Relay01\"="15000"
  void onWrite(BLECharacteristic* pCharacteristic) 
  {          
    String json = pCharacteristic->getValue();

    JsonDocument doc;
    deserializeJson(doc, json);
    char name[10];
    for (int i=0; i<6; i++)
    {
      sprintf(name,"Relay%02D",i);
      long time = doc[name];
      SetRelay(i,time);
    }

    pCharacteristic->setValue("");  
  }

  // char json[] = "{ \"Relay00\" : true, \"Relay01\" : false, \"Relay02\" : false, \"Relay03\" : false, \"Relay04\" : false, \"Relay05\" : false }"
  void onRead(BLECharacteristic* pCharacteristic, esp_ble_gatts_cb_param_t* param) 
  { 
    
    JsonDocument doc;
    char name[10];
    for (int i=0; i<6; i++)
    {
      sprintf(name,"Relay%02d",i);
      doc[name] = GetRelay(i);
    }
    String json;
    serializeJson(doc,json);
    pCharacteristic->setValue(json);  
  }

};

bool IsConnected()
{
  return isBluetoothConnected;
}

void Bluetooth_Init()
{
  /*************************************************************************
  Bluetooth
  *************************************************************************/
  
  String devicename = GetDeviceName().substring(0,30);
  
  // Initialise the Device
  BLEDevice::init(devicename);

  pServer = BLEDevice::createServer();                                          
  pServer->setCallbacks(new ServerCallbacks());  

  BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();  

  // Set up the Configuration interface (always)
  pConfigService = pServer->createService(CONFIG_SERVICE_UUID);  
  pConfigCharacteristic = pConfigService->createCharacteristic(CONFIG_CHARACTERISTIC_UUID,
    BLECharacteristic::PROPERTY_READ | BLECharacteristic::PROPERTY_WRITE);       
  pConfigCharacteristic->setCallbacks(new ConfigCharacteristicCallback());
  pConfigService->start();
  pAdvertising->addServiceUUID(CONFIG_SERVICE_UUID);                                   
  
  String equipmentid = GetEquipmentId();
  if (!equipmentid.isEmpty() && !equipmentid.equalsIgnoreCase("00000000-0000-0000-0000-000000000000"))
  {
    BLEService* pControlService = pServer->createService(equipmentid); 
    pControlCharacteristic = pControlService->createCharacteristic(CONTROL_CHARACTERISTIC_UUID,
      BLECharacteristic::PROPERTY_READ | BLECharacteristic::PROPERTY_WRITE);   
    pControlCharacteristic->setCallbacks(new ControlCharacteristicCallback());
    pControlService->start(); 
    pAdvertising->addServiceUUID(equipmentid);        
  }
    

  pAdvertising->setScanResponse(true);                                          
  pAdvertising->setMinPreferred(0x06);                                          
  pAdvertising->setMinPreferred(0x12);                                          

  BLEDevice::startAdvertising();  

  pConfigCharacteristic->notify();  
  if (pControlCharacteristic)
    pControlCharacteristic->notify();  
                                                    
  pAdvertising->start();
 

}