- Qt 5.5
- Qt Bluetooth
- Bluetooth Low Energy Scanner Example
- device.h Example File
- Qt 5.5.1 Reference Documentation

# device.h Example File

lowenergyscanner/device.h

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the demonstration applications of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
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    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
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    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    #ifndef DEVICE_H
    #define DEVICE_H

    #include <qbluetoothglobal.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