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 : * Defines the PokitDevice and PokitDevicePrivate classes.
7 : */
8 :
9 : #include <qtpokit/pokitdevice.h>
10 :
11 : #include <qtpokit/calibrationservice.h>
12 : #include <qtpokit/dataloggerservice.h>
13 : #include <qtpokit/deviceinfoservice.h>
14 : #include <qtpokit/dsoservice.h>
15 : #include <qtpokit/genericaccessservice.h>
16 : #include <qtpokit/multimeterservice.h>
17 : #include <qtpokit/statusservice.h>
18 :
19 : #include "pokitdevice_p.h"
20 :
21 : #include <QMutexLocker>
22 :
23 : /*!
24 : * \class PokitDevice
25 : *
26 : * The PokitDevice class simplifies Pokit device access.
27 : *
28 : * It does this by wrapping QLowEnergyController to provide:
29 : * * convenient Pokit service factory methods (dataLogger(), deviceInformation(), dso(),
30 : * genericAccess(), multimeter() and status()); and
31 : * * consistent debug logging of QLowEnergyController events.
32 : *
33 : * But this class is entirely optional, in that all features of all other QtPokit classes can be
34 : * used wihtout this class. It's just a (meaningful) convenience.
35 : */
36 :
37 : /*!
38 : * Constructs a new Pokit device controller wrapper for \a deviceInfo, with \a parent.
39 : *
40 : * Though not strictly necessary, \a deviceInfo should normally come from a
41 : * PokitDiscoveryAgent instance (or a QBluetoothDeviceDiscoveryAgent), otherwise connection
42 : * is likely to fail with QLowEnergyController::UnknownRemoteDeviceError.
43 : */
44 492 : PokitDevice::PokitDevice(const QBluetoothDeviceInfo &deviceInfo, QObject *parent)
45 492 : : QObject(parent), d_ptr(new PokitDevicePrivate(this))
46 : {
47 : Q_D(PokitDevice);
48 492 : d->setController(QLowEnergyController::createCentral(deviceInfo, this));
49 492 : }
50 :
51 : /*!
52 : * Constructs a new Pokit device controller wrapper for \a controller, with \a parent.
53 : */
54 324 : PokitDevice::PokitDevice(QLowEnergyController *controller, QObject *parent)
55 324 : : QObject(parent), d_ptr(new PokitDevicePrivate(this))
56 : {
57 : Q_D(PokitDevice);
58 324 : d->setController(controller);
59 324 : }
60 :
61 : /*!
62 : * \cond internal
63 : * Constructs a new Pokit device controller wrapper with \a parent, and private implementation \a d.
64 : *
65 : * Derived classes using this constructor should use PokitDevicePrivate::setController to assign
66 : * the BLE controller as some point.
67 : */
68 0 : PokitDevice::PokitDevice(PokitDevicePrivate * const d, QObject * const parent)
69 0 : : QObject(parent), d_ptr(d)
70 : {
71 :
72 0 : }
73 : /// \endcond
74 :
75 : /*!
76 : * Destroys this PokitDevice object.
77 : */
78 1308 : PokitDevice::~PokitDevice()
79 : {
80 816 : delete d_ptr;
81 1308 : }
82 :
83 : /*!
84 : * Returns a non-const pointer to the controller used to access the Pokit device.
85 : */
86 912 : QLowEnergyController * PokitDevice::controller()
87 : {
88 : Q_D(PokitDevice);
89 912 : return d->controller;
90 : }
91 :
92 : /*!
93 : * Returns a const pointer to the controller used to access the Pokit device.
94 : */
95 18 : const QLowEnergyController * PokitDevice::controller() const
96 : {
97 : Q_D(const PokitDevice);
98 18 : return d->controller;
99 : }
100 :
101 : /// \cond
102 : #define QTPOKIT_INTERNAL_GET_SERVICE(typeName, varName) \
103 : Q_D(PokitDevice); \
104 : const QMutexLocker scopedLock(&d->varName##Mutex);\
105 : if (d->varName == nullptr) { \
106 : d->varName = new typeName(d->controller); \
107 : } \
108 : return d->varName \
109 : /// \endcond
110 :
111 : /*!
112 : * Returns a pointer to a CalibrationService instance that uses this device's controller for access.
113 : *
114 : * This is a convenience function, that always returns the same pointer (for this PokitDevice
115 : * instance), but the service itself is lazily created (in a threadsafe manner) on the first
116 : * invocation of this function.
117 : */
118 72 : CalibrationService * PokitDevice::calibration()
119 : {
120 184 : QTPOKIT_INTERNAL_GET_SERVICE(CalibrationService, calibration);
121 : }
122 :
123 : /*!
124 : * Returns a pointer to a DataLoggerService instance that uses this device's controller for access.
125 : *
126 : * This is a convenience function, that always returns the same pointer (for this PokitDevice
127 : * instance), but the service itself is lazily created (in a threadsafe manner) on the first
128 : * invocation of this function.
129 : */
130 72 : DataLoggerService * PokitDevice::dataLogger()
131 : {
132 184 : QTPOKIT_INTERNAL_GET_SERVICE(DataLoggerService, dataLogger);
133 : }
134 :
135 : /*!
136 : * Returns a pointer to DeviceInformationService instance that uses this device's controller for
137 : * access.
138 : *
139 : * This is a convenience function, that always returns the same pointer (for this PokitDevice
140 : * instance), but the service itself is lazily created (in a threadsafe manner) on the first
141 : * invocation of this function.
142 : */
143 384 : DeviceInfoService * PokitDevice::deviceInformation()
144 : {
145 988 : QTPOKIT_INTERNAL_GET_SERVICE(DeviceInfoService, deviceInfo);
146 : }
147 :
148 : /*!
149 : * Returns a pointer to DsoService instance that uses this device's controller for access.
150 : *
151 : * This is a convenience function, that always returns the same pointer (for this PokitDevice
152 : * instance), but the service itself is lazily created (in a threadsafe manner) on the first
153 : * invocation of this function.
154 : */
155 72 : DsoService * PokitDevice::dso()
156 : {
157 184 : QTPOKIT_INTERNAL_GET_SERVICE(DsoService, dso);
158 : }
159 :
160 : /*!
161 : * Returns a pointer to GenericAccessService instance that uses this device's controller for access.
162 : *
163 : * This is a convenience function, that always returns the same pointer (for this PokitDevice
164 : * instance), but the service itself is lazily created (in a threadsafe manner) on the first
165 : * invocation of this function.
166 : */
167 72 : GenericAccessService * PokitDevice::genericAccess()
168 : {
169 184 : QTPOKIT_INTERNAL_GET_SERVICE(GenericAccessService, genericAccess);
170 : }
171 :
172 : /*!
173 : * Returns a pointer to MultimeterService instance that uses this device's controller for access.
174 : *
175 : * This is a convenience function, that always returns the same pointer (for this PokitDevice
176 : * instance), but the service itself is lazily created (in a threadsafe manner) on the first
177 : * invocation of this function.
178 : */
179 72 : MultimeterService * PokitDevice::multimeter()
180 : {
181 184 : QTPOKIT_INTERNAL_GET_SERVICE(MultimeterService, multimeter);
182 : }
183 :
184 : /*!
185 : * Returns a pointer to StatusService instance that uses this device's controller for access.
186 : *
187 : * This is a convenience function, that always returns the same pointer (for this PokitDevice
188 : * instance), but the service itself is lazily created (in a threadsafe manner) on the first
189 : * invocation of this function.
190 : */
191 252 : StatusService * PokitDevice::status()
192 : {
193 644 : QTPOKIT_INTERNAL_GET_SERVICE(StatusService, status);
194 : }
195 : #undef QTPOKIT_INTERNAL_GET_SERVICE
196 :
197 : /*!
198 : * Returns a human-readable name for the \a uuid service, or a null QString if unknonw.
199 : *
200 : * This is equivalent to QBluetoothUuid::serviceClassToString() but for services provided by Pokit
201 : * devices.
202 : */
203 144 : QString PokitDevice::serviceToString(const QBluetoothUuid &uuid)
204 : {
205 : static QHash<QBluetoothUuid, QString> hash{
206 24 : { CalibrationService::serviceUuid, tr("Calibration") },
207 18 : { DataLoggerService::serviceUuid, tr("Data Logger") },
208 18 : { DsoService::serviceUuid, tr("DSO") },
209 18 : { MultimeterService::serviceUuid, tr("Multimeter") },
210 18 : { StatusService::ServiceUuids::pokitMeter, tr("Status (Pokit Meter)") },
211 18 : { StatusService::ServiceUuids::pokitPro, tr("Status (Pokit Pro)") },
212 : { DeviceInfoService::serviceUuid,
213 36 : QBluetoothUuid::serviceClassToString(QBluetoothUuid::ServiceClassUuid::DeviceInformation) },
214 : { GenericAccessService::serviceUuid,
215 36 : QBluetoothUuid::serviceClassToString(QBluetoothUuid::ServiceClassUuid::GenericAccess) },
216 312 : };
217 152 : return hash.value(uuid);
218 0 : }
219 :
220 : /*!
221 : * Returns a human-readable name for the \a uuid characteristic, or a null QString if unknown.
222 : *
223 : * This is equivalent to QBluetoothUuid::characteristicToString() but for characteristics provided
224 : * by Pokit devices.
225 : */
226 360 : QString PokitDevice::charcteristicToString(const QBluetoothUuid &uuid)
227 : {
228 : static QHash<QBluetoothUuid, QString> hash{
229 24 : { CalibrationService::CharacteristicUuids::temperature, tr("Temperature") },
230 :
231 18 : { DataLoggerService::CharacteristicUuids::metadata, tr("Metadata") },
232 18 : { DataLoggerService::CharacteristicUuids::reading, tr("Reading") },
233 18 : { DataLoggerService::CharacteristicUuids::settings, tr("Settings") },
234 :
235 18 : { DsoService::CharacteristicUuids::metadata, tr("Metadata") },
236 18 : { DsoService::CharacteristicUuids::reading, tr("Reading") },
237 18 : { DsoService::CharacteristicUuids::settings, tr("Settings") },
238 :
239 18 : { MultimeterService::CharacteristicUuids::reading, tr("Reading") },
240 18 : { MultimeterService::CharacteristicUuids::settings, tr("Settings") },
241 :
242 18 : { StatusService::CharacteristicUuids::deviceCharacteristics, tr("Device Characteristics") },
243 18 : { StatusService::CharacteristicUuids::flashLed, tr("Flash LED") },
244 18 : { StatusService::CharacteristicUuids::name, tr("Name") },
245 18 : { StatusService::CharacteristicUuids::status, tr("Status") },
246 :
247 : { DeviceInfoService::CharacteristicUuids::firmwareRevision,
248 36 : QBluetoothUuid::characteristicToString(QBluetoothUuid::CharacteristicType::FirmwareRevisionString) },
249 : { DeviceInfoService::CharacteristicUuids::hardwareRevision,
250 36 : QBluetoothUuid::characteristicToString(QBluetoothUuid::CharacteristicType::HardwareRevisionString) },
251 : { DeviceInfoService::CharacteristicUuids::manufacturerName,
252 36 : QBluetoothUuid::characteristicToString(QBluetoothUuid::CharacteristicType::ManufacturerNameString) },
253 : { DeviceInfoService::CharacteristicUuids::modelNumber,
254 36 : QBluetoothUuid::characteristicToString(QBluetoothUuid::CharacteristicType::ModelNumberString) },
255 : { DeviceInfoService::CharacteristicUuids::softwareRevision,
256 36 : QBluetoothUuid::characteristicToString(QBluetoothUuid::CharacteristicType::SoftwareRevisionString) },
257 :
258 : { GenericAccessService::CharacteristicUuids::appearance,
259 36 : QBluetoothUuid::characteristicToString(QBluetoothUuid::CharacteristicType::Appearance) },
260 : { GenericAccessService::CharacteristicUuids::deviceName,
261 36 : QBluetoothUuid::characteristicToString(QBluetoothUuid::CharacteristicType::DeviceName) },
262 744 : };
263 380 : return hash.value(uuid);
264 0 : }
265 :
266 : /*!
267 : * \cond internal
268 : * \class PokitDevicePrivate
269 : *
270 : * The PokitDevicePrivate class provides private implementation for PokitDevice.
271 : */
272 :
273 : /*!
274 : * Constructs a new PokitDevicePrivate object with public implementation \a q.
275 : */
276 816 : PokitDevicePrivate::PokitDevicePrivate(PokitDevice * const q) : q_ptr(q)
277 : {
278 :
279 816 : }
280 :
281 : /*!
282 : * Sets \a newController to be used for accessing Pokit devices.
283 : *
284 : * If a controller has already been set (and is not the same pointer), then the previous controller
285 : * will be disconnected, and replaced with \a newController.
286 : *
287 : * This function will not take ownership of the new controller. The caller is responsible for
288 : * ensuring that \a newContorller remains valid for the lifetime of this instance, or until this
289 : * function is used again to replace \a newController with another one (which may be a nullptr).
290 : *
291 : * \see controller
292 : * \see PokitDevice::controller()
293 : */
294 942 : void PokitDevicePrivate::setController(QLowEnergyController * newController)
295 : {
296 942 : if (newController == this->controller) {
297 360 : qCDebug(lc).noquote() << tr("Controller already set to:") << newController;
298 360 : return;
299 : }
300 :
301 582 : if (this->controller) {
302 54 : qCDebug(lc).noquote() << tr("Disconnecting signals from previous controller:")
303 0 : << controller;
304 54 : disconnect(this->controller, nullptr, this, nullptr);
305 : }
306 :
307 582 : qCDebug(lc).noquote() << tr("Setting new controller:") << newController;
308 582 : this->controller = newController;
309 582 : if (!newController) {
310 : return; // Don't bother continuing to connect if new controller is null.
311 : }
312 :
313 546 : qCDebug(lc).noquote() << tr("Set new controller \"%1\" (%2) at (%3).").arg(
314 0 : controller->remoteName(), controller->remoteDeviceUuid().toString(),
315 0 : controller->remoteAddress().toString());
316 :
317 546 : connect(controller, &QLowEnergyController::connected,
318 : this, &PokitDevicePrivate::connected);
319 :
320 546 : connect(controller, &QLowEnergyController::connectionUpdated,
321 : this, &PokitDevicePrivate::connectionUpdated);
322 :
323 546 : connect(controller, &QLowEnergyController::disconnected,
324 : this, &PokitDevicePrivate::disconnected);
325 :
326 546 : connect(controller, &QLowEnergyController::discoveryFinished,
327 : this, &PokitDevicePrivate::discoveryFinished);
328 :
329 :
330 546 : connect(controller,
331 : #if (QT_VERSION < QT_VERSION_CHECK(6, 2, 0))
332 : QOverload<QLowEnergyController::Error>::of(&QLowEnergyController::error),
333 : #else
334 : &QLowEnergyController::errorOccurred,
335 : #endif
336 : this, &PokitDevicePrivate::errorOccurred);
337 :
338 :
339 546 : connect(controller, &QLowEnergyController::serviceDiscovered,
340 : this, &PokitDevicePrivate::serviceDiscovered);
341 :
342 546 : connect(controller, &QLowEnergyController::stateChanged,
343 : this, &PokitDevicePrivate::stateChanged);
344 : }
345 :
346 : /*!
347 : * Handle connected signals.
348 : */
349 54 : void PokitDevicePrivate::connected() const
350 : {
351 54 : if (controller == nullptr) {
352 80 : qCCritical(lc).noquote() << tr("PokitDevicePrivate::connected slot invoked without a controller.");
353 36 : return; // Just to avoid the nullptr dereference below.
354 : }
355 18 : qCDebug(lc).noquote() << tr("Connected to \"%1\" (%2) at (%3).").arg(
356 0 : controller->remoteName(), controller->remoteDeviceUuid().toString(),
357 0 : controller->remoteAddress().toString());
358 : }
359 :
360 : /*!
361 : * Handle connectionUpdated signals.
362 : */
363 18 : void PokitDevicePrivate::connectionUpdated(const QLowEnergyConnectionParameters &newParameters) const
364 : {
365 18 : qCDebug(lc).noquote() << tr("Connection updated:") << newParameters.latency()
366 0 : << newParameters.minimumInterval() << newParameters.maximumInterval()
367 0 : << newParameters.supervisionTimeout();
368 18 : }
369 :
370 : /*!
371 : * Handle disconnected signals.
372 : */
373 18 : void PokitDevicePrivate::disconnected() const
374 : {
375 18 : qCDebug(lc).noquote() << tr("Device disconnected.");
376 18 : }
377 :
378 : /*!
379 : * Handle discoveryFinished signals.
380 : */
381 18 : void PokitDevicePrivate::discoveryFinished() const
382 : {
383 18 : qCDebug(lc).noquote() << tr("Service discovery finished.");
384 18 : }
385 :
386 : /*!
387 : * Handle error signals.
388 : */
389 18 : void PokitDevicePrivate::errorOccurred(QLowEnergyController::Error newError) const
390 : {
391 18 : qCDebug(lc).noquote() << tr("Controller error:") << newError;
392 18 : }
393 :
394 : /*!
395 : * Handle serviceDiscovered signals.
396 : */
397 18 : void PokitDevicePrivate::serviceDiscovered(const QBluetoothUuid &newService) const
398 : {
399 18 : qCDebug(lc).noquote() << tr("Service discovered: %1 \"%2\"")
400 0 : .arg(newService.toString(), PokitDevice::serviceToString(newService));
401 18 : }
402 :
403 : /*!
404 : * Handle stateChanged signals.
405 : */
406 18 : void PokitDevicePrivate::stateChanged(QLowEnergyController::ControllerState state) const
407 : {
408 18 : qCDebug(lc).noquote() << tr("State changed to:") << state;
409 18 : }
410 :
411 : /// \endcond
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