Use heartrate-game example for snippets in BTLE overview

heartlistener example will be removed.

Change-Id: Iaa5c5f629cf351b97c18f61b4fab2cbbd8d0744c
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>

examples/bluetooth/heartrate-game/devicefinder.cpp

@@ -46,6 +46,7 @@ DeviceFinder::DeviceFinder(DeviceHandler *handler, QObject *parent):
     BluetoothBaseClass(parent),
     m_deviceHandler(handler)
 {
+    //! [devicediscovery-1]
     m_deviceDiscoveryAgent = new QBluetoothDeviceDiscoveryAgent(this);
     m_deviceDiscoveryAgent->setLowEnergyDiscoveryTimeout(5000);
 
@@ -55,6 +56,7 @@ DeviceFinder::DeviceFinder(DeviceHandler *handler, QObject *parent):
 
     connect(m_deviceDiscoveryAgent, &QBluetoothDeviceDiscoveryAgent::finished, this, &DeviceFinder::scanFinished);
     connect(m_deviceDiscoveryAgent, &QBluetoothDeviceDiscoveryAgent::canceled, this, &DeviceFinder::scanFinished);
+    //! [devicediscovery-1]
 
 
 #ifdef SIMULATOR
@@ -82,21 +84,28 @@ void DeviceFinder::startSearch()
 #ifdef SIMULATOR
     m_demoTimer.start();
 #else
+    //! [devicediscovery-2]
     m_deviceDiscoveryAgent->start(QBluetoothDeviceDiscoveryAgent::LowEnergyMethod);
+    //! [devicediscovery-2]
 #endif
     emit scanningChanged();
     setInfo(tr("Scanning for devices..."));
 }
 
+//! [devicediscovery-3]
 void DeviceFinder::addDevice(const QBluetoothDeviceInfo &device)
 {
     // If device is LowEnergy-device, add it to the list
     if (device.coreConfigurations() & QBluetoothDeviceInfo::LowEnergyCoreConfiguration) {
         m_devices.append(new DeviceInfo(device));
         setInfo(tr("Low Energy device found. Scanning more..."));
+//! [devicediscovery-3]
         emit devicesChanged();
+//! [devicediscovery-4]
     }
+    //...
 }
+//! [devicediscovery-4]
 
 void DeviceFinder::scanError(QBluetoothDeviceDiscoveryAgent::Error error)
 {

examples/bluetooth/heartrate-game/devicehandler.cpp

@@ -103,8 +103,11 @@ void DeviceHandler::setDevice(DeviceInfo *device)
     if (m_currentDevice) {
 
         // Make connections
+        //! [Connect-Signals-1]
         m_control = new QLowEnergyController(m_currentDevice->getDevice(), this);
+        //! [Connect-Signals-1]
         m_control->setRemoteAddressType(m_addressType);
+        //! [Connect-Signals-2]
         connect(m_control, &QLowEnergyController::serviceDiscovered,
                 this, &DeviceHandler::serviceDiscovered);
         connect(m_control, &QLowEnergyController::discoveryFinished,
@@ -125,6 +128,7 @@ void DeviceHandler::setDevice(DeviceInfo *device)
 
         // Connect
         m_control->connectToDevice();
+        //! [Connect-Signals-2]
     }
 }
 
@@ -149,6 +153,7 @@ void DeviceHandler::stopMeasurement()
     emit measuringChanged();
 }
 
+//! [Filter HeartRate service 1]
 void DeviceHandler::serviceDiscovered(const QBluetoothUuid &gatt)
 {
     if (gatt == QBluetoothUuid(QBluetoothUuid::HeartRate)) {
@@ -156,6 +161,7 @@ void DeviceHandler::serviceDiscovered(const QBluetoothUuid &gatt)
         m_foundHeartRateService = true;
     }
 }
+//! [Filter HeartRate service 1]
 
 void DeviceHandler::serviceScanDone()
 {
@@ -167,6 +173,7 @@ void DeviceHandler::serviceScanDone()
         m_service = 0;
     }
 
+//! [Filter HeartRate service 2]
     // If heartRateService found, create new service
     if (m_foundHeartRateService)
         m_service = m_control->createServiceObject(QBluetoothUuid(QBluetoothUuid::HeartRate), this);
@@ -179,9 +186,11 @@ void DeviceHandler::serviceScanDone()
     } else {
         setError("Heart Rate Service not found.");
     }
+//! [Filter HeartRate service 2]
 }
 
 // Service functions
+//! [Find HRM characteristic]
 void DeviceHandler::serviceStateChanged(QLowEnergyService::ServiceState s)
 {
     switch (s) {
@@ -211,7 +220,9 @@ void DeviceHandler::serviceStateChanged(QLowEnergyService::ServiceState s)
 
     emit aliveChanged();
 }
+//! [Find HRM characteristic]
 
+//! [Reading value]
 void DeviceHandler::updateHeartRateValue(const QLowEnergyCharacteristic &c, const QByteArray &value)
 {
     // ignore any other characteristic change -> shouldn't really happen though
@@ -230,6 +241,7 @@ void DeviceHandler::updateHeartRateValue(const QLowEnergyCharacteristic &c, cons
 
     addMeasurement(hrvalue);
 }
+//! [Reading value]
 
 #ifdef SIMULATOR
 void DeviceHandler::updateDemoHR()

src/bluetooth/doc/src/bluetooth-le-overview.qdoc

@@ -165,7 +165,7 @@ Low Energy devices.
     their services, as well as reading and writing data stored on the device.
     On the server side, it allows to set up services, advertise them, and get notified when the
     client writes characteristics.
-    The example code below is taken from the \l {heartlistener}{Heart Listener} and
+    The example code below is taken from the \l {heartrate-game}{Heart Rate Game} and
     \l {heartrate-server}{Heart Rate Server} examples.
 
     \section2 Establishing a Connection
@@ -176,15 +176,15 @@ Low Energy devices.
     \l QBluetoothDeviceDiscoveryAgent class. We connect to its \l {QBluetoothDeviceDiscoveryAgent::deviceDiscovered()}
     signal and start the search with \l {QBluetoothDeviceDiscoveryAgent::start()}{start()}:
 
-    \snippet heartlistener/heartrate.cpp devicediscovery-1
-    \snippet heartlistener/heartrate.cpp devicediscovery-2
+    \snippet heartrate-game/devicefinder.cpp devicediscovery-1
+    \snippet heartrate-game/devicefinder.cpp devicediscovery-2
 
     Since we are only interested in Low Energy devices we filter the device type within the
     receiving slot. The device type can be ascertained using the \l QBluetoothDeviceInfo::coreConfigurations()
     flag:
 
-    \snippet heartlistener/heartrate.cpp devicediscovery-3
-    \snippet heartlistener/heartrate.cpp devicediscovery-4
+    \snippet heartrate-game/devicefinder.cpp devicediscovery-3
+    \snippet heartrate-game/devicefinder.cpp devicediscovery-4
 
     Once the address of the peripheral device is known we use the \l QLowEnergyController class.
     This class is the entry point for all Bluetooth Low Energy development. The  constructor of the class
@@ -192,20 +192,20 @@ Low Energy devices.
     directly connect to the device using
     \l {QLowEnergyController::connectToDevice()}{connectToDevice()}:
 
-    \snippet heartlistener/heartrate.cpp Connect signals
+    \snippet heartrate-game/devicehandler.cpp Connect-Signals-1
+    \snippet heartrate-game/devicehandler.cpp Connect-Signals-2
 
     \section2 Service Search
 
-    As soon as the connection is established we initiate the service discovery:
-
-    \snippet heartlistener/heartrate.cpp Connecting to service
+    The above code snippet how the application initiates the service discovery once the connection has
+    been established.
 
     The \c serviceDiscovered() slot below is triggered as a result of the
     \l {QLowEnergyController::serviceDiscovered()} signal and provides an intermittent progress report.
     Since we are talking about the heart listener app which monitors HeartRate devices in the vicinity
     we ignore any service that is not of type \l QBluetoothUuid::HeartRate.
 
-    \snippet heartlistener/heartrate.cpp Filter HeartRate service 1
+    \snippet heartrate-game/devicehandler.cpp Filter HeartRate service 1
 
     Eventually the \l {QLowEnergyController::discoveryFinished()} signal is emitted to indicate
     the successful completion of the service discovery. Provided a HeartRate service was found,
@@ -213,14 +213,14 @@ Low Energy devices.
     provides the required signals for update notifications and the discovery of service details
     is triggered using \l QLowEnergyService::discoverDetails():
 
-    \snippet heartlistener/heartrate.cpp Filter HeartRate service 2
+    \snippet heartrate-game/devicehandler.cpp Filter HeartRate service 2
 
     During the detail search the service's \l {QLowEnergyService::state()}{state()} transitions
     from \l {QLowEnergyService::DiscoveryRequired}{DiscoveryRequired} to
     \l {QLowEnergyService::DiscoveringServices}{DiscoveringServices} and eventually ends with
     \l {QLowEnergyService::ServiceDiscovered}{ServiceDiscovered}:
 
-    \snippet heartlistener/heartrate.cpp Find HRM characteristic
+    \snippet heartrate-game/devicehandler.cpp Find HRM characteristic
 
     \section2 Interaction with the Peripheral Device
 
@@ -235,8 +235,7 @@ Low Energy devices.
 
     Finally, we process the value of the HeartRate characteristic, as per Bluetooth Low Energy standard:
 
-    \snippet heartlistener/heartrate.cpp Reading value 1
-    \snippet heartlistener/heartrate.cpp Reading value 2
+    \snippet heartrate-game/devicehandler.cpp Reading value
 
     In general a characteristic value is a series of bytes. The precise interpretation of
     those bytes depends on the characteristic type and value structure.