devicehandler.h Example File

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  #ifndef DEVICEHANDLER_H
  #define DEVICEHANDLER_H

  #include "bluetoothbaseclass.h"

  #include <QDateTime>
  #include <QVector>
  #include <QTimer>
  #include <QLowEnergyController>
  #include <QLowEnergyService>

  class DeviceInfo;

  class DeviceHandler : public BluetoothBaseClass
  {
      Q_OBJECT

      Q_PROPERTY(bool measuring READ measuring NOTIFY measuringChanged)
      Q_PROPERTY(bool alive READ alive NOTIFY aliveChanged)
      Q_PROPERTY(int hr READ hr NOTIFY statsChanged)
      Q_PROPERTY(int maxHR READ maxHR NOTIFY statsChanged)
      Q_PROPERTY(int minHR READ minHR NOTIFY statsChanged)
      Q_PROPERTY(float average READ average NOTIFY statsChanged)
      Q_PROPERTY(int time READ time NOTIFY statsChanged)
      Q_PROPERTY(float calories READ calories NOTIFY statsChanged)
      Q_PROPERTY(AddressType addressType READ addressType WRITE setAddressType)

  public:
      enum class AddressType {
          PublicAddress,
          RandomAddress
      };
      Q_ENUM(AddressType)

      DeviceHandler(QObject *parent = 0);

      void setDevice(DeviceInfo *device);
      void setAddressType(AddressType type);
      AddressType addressType() const;

      bool measuring() const;
      bool alive() const;

      // Statistics
      int hr() const;
      int time() const;
      float average() const;
      int maxHR() const;
      int minHR() const;
      float calories() const;

  signals:
      void measuringChanged();
      void aliveChanged();
      void statsChanged();

  public slots:
      void startMeasurement();
      void stopMeasurement();
      void disconnectService();

  private:
      //QLowEnergyController
      void serviceDiscovered(const QBluetoothUuid &);
      void serviceScanDone();

      //QLowEnergyService
      void serviceStateChanged(QLowEnergyService::ServiceState s);
      void updateHeartRateValue(const QLowEnergyCharacteristic &c,
                                const QByteArray &value);
      void confirmedDescriptorWrite(const QLowEnergyDescriptor &d,
                                const QByteArray &value);

  #ifdef SIMULATOR
      void updateDemoHR();
  #endif
  private:
      void addMeasurement(int value);

      QLowEnergyController *m_control;
      QLowEnergyService *m_service;
      QLowEnergyDescriptor m_notificationDesc;
      DeviceInfo *m_currentDevice;

      bool m_foundHeartRateService;
      bool m_measuring;
      int m_currentValue, m_min, m_max, m_sum;
      float m_avg, m_calories;

      // Statistics
      QDateTime m_start;
      QDateTime m_stop;

      QVector<int> m_measurements;
      QLowEnergyController::RemoteAddressType m_addressType = QLowEnergyController::PublicAddress;

  #ifdef SIMULATOR
      QTimer m_demoTimer;
  #endif
  };

  #endif // DEVICEHANDLER_H