Line data    Source code

       1             : // SPDX-FileCopyrightText: 2022-2023 Paul Colby <git@colby.id.au>
       2             : // SPDX-License-Identifier: LGPL-3.0-or-later
       3             : 
       4             : /*!
       5             :  * \file
       6             :  * Declares the DataLoggerService class.
       7             :  */
       8             : 
       9             : #ifndef QTPOKIT_DATALOGGERSERVICE_H
      10             : #define QTPOKIT_DATALOGGERSERVICE_H
      11             : 
      12             : #include "abstractpokitservice.h"
      13             : 
      14             : #include <QBluetoothAddress>
      15             : #include <QBluetoothUuid>
      16             : #include <QVersionNumber>
      17             : 
      18             : QTPOKIT_BEGIN_NAMESPACE
      19             : 
      20             : class DataLoggerServicePrivate;
      21             : 
      22             : class QTPOKIT_EXPORT DataLoggerService : public AbstractPokitService
      23             : {
      24        2772 :     Q_OBJECT
      25             : 
      26             : public:
      27             :     /// UUID of the "DataLogger" service.
      28             :     static inline const QBluetoothUuid serviceUuid { QStringLiteral("a5ff3566-1fd8-4e10-8362-590a578a4121") };
      29             : 
      30             :     /// Characteristics available via the `DataLogger` service.
      31             :     struct QTPOKIT_EXPORT CharacteristicUuids {
      32             :         /// UUID of the `DataLogger` service's `Settings` characterstic.
      33             :         static inline const QBluetoothUuid settings { QStringLiteral("5f97c62b-a83b-46c6-b9cd-cac59e130a78") };
      34             : 
      35             :         /// UUID of the `DataLogger` service's `Metadata` characterstic.
      36             :         static inline const QBluetoothUuid metadata { QStringLiteral("9acada2e-3936-430b-a8f7-da407d97ca6e") };
      37             : 
      38             :         /// UUID of the `DataLogger` service's `Reading` characterstic.
      39             :         static inline const QBluetoothUuid reading  { QStringLiteral("3c669dab-fc86-411c-9498-4f9415049cc0") };
      40             :     };
      41             : 
      42             :     /// Values supported by the `Command` attribute of the `Settings` characteristic.
      43             :     enum class Command : quint8 {
      44             :         Start   = 0, ///< Start the Data Logger.
      45             :         Stop    = 1, ///< Stop the Data Logger.
      46             :         Refresh = 2, ///< Refresh the Data Logger.
      47             :     };
      48             : 
      49             :     /// Values supported by the `Mode` attribute of the `Settings` and `Metadata` characteristics.
      50             :     enum class Mode : quint8 {
      51             :         Idle        = 0, ///< Make device idle.
      52             :         DcVoltage   = 1, ///< Measure DC voltage.
      53             :         AcVoltage   = 2, ///< Measure AC voltage.
      54             :         DcCurrent   = 3, ///< Measure DC current.
      55             :         AcCurrent   = 4, ///< Measure AC current.
      56             :         Temperature = 5, ///< Measure temperature.
      57             :     };
      58             :     static QString toString(const Mode &mode);
      59             : 
      60             :     static QString toString(const PokitProduct product, const quint8 range, const Mode mode);
      61             :     QString toString(const quint8 range, const Mode mode) const;
      62             :     static QVariant maxValue(const PokitProduct product, const quint8 range, const Mode mode);
      63             :     QVariant maxValue(const quint8 range, const Mode mode) const;
      64             : 
      65             :     /// Attributes included in the `Settings` characterstic.
      66             :     struct Settings {
      67             :         Command command;        ///< Custom operation request.
      68             :         quint16 arguments;      ///< Reserved to used along with #command in future.
      69             :         Mode mode;              ///< Desired operation mode.
      70             :         quint8 range;           ///< Desired range.
      71             :         quint32 updateInterval; ///< Desired update interval in milliseconds.
      72             :         quint32 timestamp;      ///< Custom timestamp for start time in retrieved metadata.
      73             :     };
      74             : 
      75             :     /// Values supported by the `Status` attribute of the `Metadata` characteristic.
      76             :     enum class LoggerStatus : quint8 {
      77             :         Done       = 0,   ///< Sampling has completed.
      78             :         Sampling   = 1,   ///< Actively sampling.
      79             :         BufferFull = 2,   ///< Buffer is full.
      80             :         Error      = 255  ///< An error has occurred.
      81             :     };
      82             : 
      83             :     /// Attributes included in the `Metadata` characterstic.
      84             :     struct Metadata {
      85             :         LoggerStatus status;     ///< Current data logger status.
      86             :         float scale;             ///< Scale to apply to read samples.
      87             :         Mode mode;               ///< Current operation mode.
      88             :         quint8 range;            ///< Current range.
      89             :         quint32 updateInterval;  ///< Current logging interval in milliseconds.
      90             :         quint16 numberOfSamples; ///< Number of samples acquired (1 to 6192).
      91             :         quint32 timestamp;       ///< Timestamp stored at the beginning of the logging session.
      92             :     };
      93             : 
      94             :     typedef QVector<qint16> Samples;
      95             : 
      96             :     DataLoggerService(QLowEnergyController * const pokitDevice, QObject * parent = nullptr);
      97             :     ~DataLoggerService() override;
      98             : 
      99             :     bool readCharacteristics() override;
     100             :     bool readMetadataCharacteristic();
     101             : 
     102             :     // Settings characteristic (BLE write only).
     103             :     bool setSettings(const Settings &settings);
     104             :     bool startLogger(const Settings &settings);
     105             :     bool stopLogger();
     106             :     bool fetchSamples();
     107             : 
     108             :     // Metadata characteristic (BLE read/notify).
     109             :     Metadata metadata() const;
     110             :     bool enableMetadataNotifications();
     111             :     bool disableMetadataNotifications();
     112             : 
     113             :     // Reading characteristic (BLE notify only).
     114             :     bool enableReadingNotifications();
     115             :     bool disableReadingNotifications();
     116             : 
     117             : signals:
     118             :     void settingsWritten();
     119             :     void metadataRead(const DataLoggerService::Metadata &meta);
     120             :     void samplesRead(const DataLoggerService::Samples &samples);
     121             : 
     122             : protected:
     123             :     /// \cond internal
     124             :     DataLoggerService(DataLoggerServicePrivate * const d, QObject * const parent);
     125             :     /// \endcond
     126             : 
     127             : private:
     128         252 :     Q_DECLARE_PRIVATE(DataLoggerService)
     129             :     Q_DISABLE_COPY(DataLoggerService)
     130             :     friend class TestDataLoggerService;
     131             : };
     132             : 
     133             : QTPOKIT_END_NAMESPACE
     134             : 
     135             : #endif // QTPOKIT_DATALOGGERSERVICE_H