Qt 5.11 | Qt Bluetooth | Bluetooth Low Energy Scanner Example | device.h Example File

Qt 5.11.3 Reference Documentation

# device.h Example File

lowenergyscanner/device.h

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      #ifndef DEVICE_H
      #define DEVICE_H

      #include <qbluetoothlocaldevice.h>
      #include <QObject>
      #include <QVariant>
      #include <QList>
      #include <QBluetoothServiceDiscoveryAgent>
      #include <QBluetoothDeviceDiscoveryAgent>
      #include <QLowEnergyController>
      #include <QBluetoothServiceInfo>
      #include "deviceinfo.h"
      #include "serviceinfo.h"
      #include "characteristicinfo.h"

      QT_FORWARD_DECLARE_CLASS (QBluetoothDeviceInfo)
      QT_FORWARD_DECLARE_CLASS (QBluetoothServiceInfo)

      class Device: public QObject
      {
          Q_OBJECT
          Q_PROPERTY(QVariant devicesList READ getDevices NOTIFY devicesUpdated)
          Q_PROPERTY(QVariant servicesList READ getServices NOTIFY servicesUpdated)
          Q_PROPERTY(QVariant characteristicList READ getCharacteristics NOTIFY characteristicsUpdated)
          Q_PROPERTY(QString update READ getUpdate WRITE setUpdate NOTIFY updateChanged)
          Q_PROPERTY(bool useRandomAddress READ isRandomAddress WRITE setRandomAddress NOTIFY randomAddressChanged)
          Q_PROPERTY(bool state READ state NOTIFY stateChanged)
          Q_PROPERTY(bool controllerError READ hasControllerError)
      public:
          Device();
          ~Device();
          QVariant getDevices();
          QVariant getServices();
          QVariant getCharacteristics();
          QString getUpdate();
          bool state();
          bool hasControllerError() const;

          bool isRandomAddress() const;
          void setRandomAddress(bool newValue);

      public slots:
          void startDeviceDiscovery();
          void scanServices(const QString &address);

          void connectToService(const QString &uuid);
          void disconnectFromDevice();

      private slots:
          // QBluetoothDeviceDiscoveryAgent related
          void addDevice(const QBluetoothDeviceInfo&);
          void deviceScanFinished();
          void deviceScanError(QBluetoothDeviceDiscoveryAgent::Error);

          // QLowEnergyController realted
          void addLowEnergyService(const QBluetoothUuid &uuid);
          void deviceConnected();
          void errorReceived(QLowEnergyController::Error);
          void serviceScanDone();
          void deviceDisconnected();

          // QLowEnergyService related
          void serviceDetailsDiscovered(QLowEnergyService::ServiceState newState);

      Q_SIGNALS:
          void devicesUpdated();
          void servicesUpdated();
          void characteristicsUpdated();
          void updateChanged();
          void stateChanged();
          void disconnected();
          void randomAddressChanged();

      private:
          void setUpdate(QString message);
          QBluetoothDeviceDiscoveryAgent *discoveryAgent;
          DeviceInfo currentDevice;
          QList<QObject*> devices;
          QList<QObject*> m_services;
          QList<QObject*> m_characteristics;
          QString m_previousAddress;
          QString m_message;
          bool connected;
          QLowEnergyController *controller;
          bool m_deviceScanState;
          bool randomAddress;
      };

      #endif // DEVICE_H