heartrate.h Example File

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  ** This file is part of the examples of the QtBluetooth module of the Qt Toolkit.
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  #ifndef HEARTRATE_H
  #define HEARTRATE_H

  #include "deviceinfo.h"

  #include <QString>
  #include <QDebug>
  #include <QDateTime>
  #include <QVector>
  #include <QTimer>
  #include <QBluetoothDeviceDiscoveryAgent>
  #include <QBluetoothDeviceInfo>
  #include <QLowEnergyController>
  #include <QLowEnergyService>

  QT_USE_NAMESPACE
  class HeartRate: public QObject
  {
      Q_OBJECT
      Q_PROPERTY(QVariant name READ name NOTIFY nameChanged)
      Q_PROPERTY(QString message READ message NOTIFY messageChanged)
      Q_PROPERTY(int hr READ hR NOTIFY hrChanged)
      Q_PROPERTY(int maxHR READ maxHR NOTIFY averageChanged)
      Q_PROPERTY(int minHR READ minHR NOTIFY averageChanged)
      Q_PROPERTY(float average READ average NOTIFY averageChanged)
      Q_PROPERTY(int time READ time NOTIFY timeChanged)
      Q_PROPERTY(float calories READ caloriesCalculation NOTIFY caloriesChanged)

  public:
      HeartRate();
      ~HeartRate();
      void setMessage(QString message);
      QString message() const;
      QVariant name();
      int hR() const;
      int time();
      float average();
      int maxHR() const;
      int minHR() const;
      float caloriesCalculation();

  public slots:
      void deviceSearch();
      void connectToService(const QString &address);
      void disconnectService();
      void startDemo();

      void obtainResults();
      int measurements(int index) const;
      int measurementsSize() const;
      QString deviceAddress() const;
      int numDevices() const;

  private slots:
      //QBluetothDeviceDiscoveryAgent
      void addDevice(const QBluetoothDeviceInfo&);
      void scanFinished();
      void deviceScanError(QBluetoothDeviceDiscoveryAgent::Error);

      //QLowEnergyController
      void serviceDiscovered(const QBluetoothUuid &);
      void serviceScanDone();
      void controllerError(QLowEnergyController::Error);
      void deviceConnected();
      void deviceDisconnected();

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

      //DemoMode
      void receiveDemo();

  Q_SIGNALS:
      void messageChanged();
      void nameChanged();
      void hrChanged();
      void averageChanged();
      void timeChanged();
      void caloriesChanged();

  private:
      int randomPulse() const;

      DeviceInfo m_currentDevice;
      QBluetoothDeviceDiscoveryAgent *m_deviceDiscoveryAgent;
      QLowEnergyDescriptor m_notificationDesc;
      QList<QObject*> m_devices;
      QString m_info;
      bool foundHeartRateService;
      QVector<quint16> m_measurements;
      QDateTime m_start;
      QDateTime m_stop;
      int m_max;
      int m_min;
      float calories;
      QLowEnergyController *m_control;
      QTimer *timer; // for demo application
      QLowEnergyService *m_service;
  };

  #endif // HEARTRATE_H