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Diffstat (limited to 'examples/bluetooth/heartlistener/heartrate.cpp')
| -rw-r--r-- | examples/bluetooth/heartlistener/heartrate.cpp | 445 |
1 files changed, 0 insertions, 445 deletions
diff --git a/examples/bluetooth/heartlistener/heartrate.cpp b/examples/bluetooth/heartlistener/heartrate.cpp deleted file mode 100644 index c206b69e..00000000 --- a/examples/bluetooth/heartlistener/heartrate.cpp +++ /dev/null @@ -1,445 +0,0 @@ -/*************************************************************************** -** -** Copyright (C) 2014 BlackBerry Limited. All rights reserved. -** Copyright (C) 2015 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ -** -** This file is part of the examples of the QtBluetooth module 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. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "heartrate.h" - -#include <QtEndian> - -HeartRate::HeartRate(): - m_currentDevice(QBluetoothDeviceInfo()), foundHeartRateService(false), - m_max(0), m_min(0), calories(0), m_control(0), timer(0), - m_service(0) -{ - //! [devicediscovery-1] - m_deviceDiscoveryAgent = new QBluetoothDeviceDiscoveryAgent(this); - m_deviceDiscoveryAgent->setLowEnergyDiscoveryTimeout(5000); - - connect(m_deviceDiscoveryAgent, SIGNAL(deviceDiscovered(const QBluetoothDeviceInfo&)), - this, SLOT(addDevice(const QBluetoothDeviceInfo&))); - connect(m_deviceDiscoveryAgent, SIGNAL(error(QBluetoothDeviceDiscoveryAgent::Error)), - this, SLOT(deviceScanError(QBluetoothDeviceDiscoveryAgent::Error))); - connect(m_deviceDiscoveryAgent, SIGNAL(finished()), this, SLOT(scanFinished())); - //! [devicediscovery-1] - - // initialize random seed for demo mode - qsrand(QTime::currentTime().msec()); -} - -HeartRate::~HeartRate() -{ - qDeleteAll(m_devices); - m_devices.clear(); -} - -void HeartRate::deviceSearch() -{ - qDeleteAll(m_devices); - m_devices.clear(); - //! [devicediscovery-2] - m_deviceDiscoveryAgent->start(QBluetoothDeviceDiscoveryAgent::LowEnergyMethod); - //! [devicediscovery-2] - setMessage("Scanning for devices..."); -} - -//! [devicediscovery-3] -void HeartRate::addDevice(const QBluetoothDeviceInfo &device) -{ - if (device.coreConfigurations() & QBluetoothDeviceInfo::LowEnergyCoreConfiguration) { - qWarning() << "Discovered LE Device name: " << device.name() << " Address: " - << device.address().toString(); -//! [devicediscovery-3] - DeviceInfo *dev = new DeviceInfo(device); - m_devices.append(dev); - setMessage("Low Energy device found. Scanning for more..."); -//! [devicediscovery-4] - } - //... -} -//! [devicediscovery-4] - -void HeartRate::scanFinished() -{ - if (m_devices.size() == 0) - setMessage("No Low Energy devices found"); - Q_EMIT nameChanged(); -} - -void HeartRate::deviceScanError(QBluetoothDeviceDiscoveryAgent::Error error) -{ - if (error == QBluetoothDeviceDiscoveryAgent::PoweredOffError) - setMessage("The Bluetooth adaptor is powered off, power it on before doing discovery."); - else if (error == QBluetoothDeviceDiscoveryAgent::InputOutputError) - setMessage("Writing or reading from the device resulted in an error."); - else - setMessage("An unknown error has occurred."); -} - - -void HeartRate::setMessage(QString message) -{ - m_info = message; - Q_EMIT messageChanged(); -} - -QString HeartRate::message() const -{ - return m_info; -} - -QVariant HeartRate::name() -{ - return QVariant::fromValue(m_devices); -} - -void HeartRate::connectToService(const QString &address) -{ - m_measurements.clear(); - - bool deviceFound = false; - for (int i = 0; i < m_devices.size(); i++) { - if (((DeviceInfo*)m_devices.at(i))->getAddress() == address ) { - m_currentDevice.setDevice(((DeviceInfo*)m_devices.at(i))->getDevice()); - setMessage("Connecting to device..."); - deviceFound = true; - break; - } - } - // we are running demo mode - if (!deviceFound) { - startDemo(); - return; - } - - if (m_control) { - m_control->disconnectFromDevice(); - delete m_control; - m_control = 0; - - } - //! [Connect signals] - m_control = new QLowEnergyController(m_currentDevice.getDevice(), this); - connect(m_control, SIGNAL(serviceDiscovered(QBluetoothUuid)), - this, SLOT(serviceDiscovered(QBluetoothUuid))); - connect(m_control, SIGNAL(discoveryFinished()), - this, SLOT(serviceScanDone())); - connect(m_control, SIGNAL(error(QLowEnergyController::Error)), - this, SLOT(controllerError(QLowEnergyController::Error))); - connect(m_control, SIGNAL(connected()), - this, SLOT(deviceConnected())); - connect(m_control, SIGNAL(disconnected()), - this, SLOT(deviceDisconnected())); - - m_control->connectToDevice(); - //! [Connect signals] -} - -//! [Connecting to service] - -void HeartRate::deviceConnected() -{ - m_control->discoverServices(); -} - -void HeartRate::deviceDisconnected() -{ - setMessage("Heart Rate service disconnected"); - qWarning() << "Remote device disconnected"; -} - -//! [Connecting to service] - -//! [Filter HeartRate service 1] -void HeartRate::serviceDiscovered(const QBluetoothUuid &gatt) -{ - if (gatt == QBluetoothUuid(QBluetoothUuid::HeartRate)) { - setMessage("Heart Rate service discovered. Waiting for service scan to be done..."); - foundHeartRateService = true; - } -} -//! [Filter HeartRate service 1] - -void HeartRate::serviceScanDone() -{ - delete m_service; - m_service = 0; - - //! [Filter HeartRate service 2] - if (foundHeartRateService) { - setMessage("Connecting to service..."); - m_service = m_control->createServiceObject( - QBluetoothUuid(QBluetoothUuid::HeartRate), this); - } - - if (!m_service) { - setMessage("Heart Rate Service not found."); - return; - } - - connect(m_service, SIGNAL(stateChanged(QLowEnergyService::ServiceState)), - this, SLOT(serviceStateChanged(QLowEnergyService::ServiceState))); - connect(m_service, SIGNAL(characteristicChanged(QLowEnergyCharacteristic,QByteArray)), - this, SLOT(updateHeartRateValue(QLowEnergyCharacteristic,QByteArray))); - connect(m_service, SIGNAL(descriptorWritten(QLowEnergyDescriptor,QByteArray)), - this, SLOT(confirmedDescriptorWrite(QLowEnergyDescriptor,QByteArray))); - - m_service->discoverDetails(); - //! [Filter HeartRate service 2] -} - -void HeartRate::disconnectService() -{ - foundHeartRateService = false; - m_stop = QDateTime::currentDateTime(); - - if (m_devices.isEmpty()) { - if (timer) - timer->stop(); - return; - } - - //disable notifications before disconnecting - if (m_notificationDesc.isValid() && m_service - && m_notificationDesc.value() == QByteArray::fromHex("0100")) - { - m_service->writeDescriptor(m_notificationDesc, QByteArray::fromHex("0000")); - } else { - m_control->disconnectFromDevice(); - delete m_service; - m_service = 0; - } -} - -//! [Error handling] -void HeartRate::controllerError(QLowEnergyController::Error error) -{ - setMessage("Cannot connect to remote device."); - qWarning() << "Controller Error:" << error; -} -//! [Error handling] - - -//! [Find HRM characteristic] -void HeartRate::serviceStateChanged(QLowEnergyService::ServiceState s) -{ - switch (s) { - case QLowEnergyService::ServiceDiscovered: - { - const QLowEnergyCharacteristic hrChar = m_service->characteristic( - QBluetoothUuid(QBluetoothUuid::HeartRateMeasurement)); - if (!hrChar.isValid()) { - setMessage("HR Data not found."); - break; - } - - m_notificationDesc = hrChar.descriptor( - QBluetoothUuid::ClientCharacteristicConfiguration); - if (m_notificationDesc.isValid()) { - m_service->writeDescriptor(m_notificationDesc, QByteArray::fromHex("0100")); - setMessage("Measuring"); - m_start = QDateTime::currentDateTime(); - } - - break; - } - default: - //nothing for now - break; - } -} -//! [Find HRM characteristic] - -void HeartRate::serviceError(QLowEnergyService::ServiceError e) -{ - switch (e) { - case QLowEnergyService::DescriptorWriteError: - setMessage("Cannot obtain HR notifications"); - break; - default: - qWarning() << "HR service error:" << e; - } -} - -//! [Reading value 1] -void HeartRate::updateHeartRateValue(const QLowEnergyCharacteristic &c, - const QByteArray &value) -{ - // ignore any other characteristic change -> shouldn't really happen though - if (c.uuid() != QBluetoothUuid(QBluetoothUuid::HeartRateMeasurement)) - return; - - - const quint8 *data = reinterpret_cast<const quint8 *>(value.constData()); - quint8 flags = data[0]; - - //Heart Rate - if (flags & 0x1) { // HR 16 bit? otherwise 8 bit - const quint16 heartRate = qFromLittleEndian<quint16>(data[1]); - //qDebug() << "16 bit HR value:" << heartRate; - m_measurements.append(heartRate); - } else { - const quint8 *heartRate = &data[1]; - m_measurements.append(*heartRate); - //qDebug() << "8 bit HR value:" << *heartRate; - } - - //Energy Expended - if (flags & 0x8) { - int index = (flags & 0x1) ? 5 : 3; - const quint16 energy = qFromLittleEndian<quint16>(data[index]); - qDebug() << "Used Energy:" << energy; - } - //! [Reading value 1] - - Q_EMIT hrChanged(); -//! [Reading value 2] -} -//! [Reading value 2] - -void HeartRate::confirmedDescriptorWrite(const QLowEnergyDescriptor &d, - const QByteArray &value) -{ - if (d.isValid() && d == m_notificationDesc && value == QByteArray::fromHex("0000")) { - //disabled notifications -> assume disconnect intent - m_control->disconnectFromDevice(); - delete m_service; - m_service = 0; - } -} - -int HeartRate::hR() const -{ - if (m_measurements.isEmpty()) - return 0; - return m_measurements.last(); -} - -void HeartRate::obtainResults() -{ - Q_EMIT timeChanged(); - Q_EMIT averageChanged(); - Q_EMIT caloriesChanged(); -} - -int HeartRate::time() -{ - return m_start.secsTo(m_stop); -} - -int HeartRate::maxHR() const -{ - return m_max; -} - -int HeartRate::minHR() const -{ - return m_min; -} - -float HeartRate::average() -{ - if (m_measurements.size() == 0) { - return 0; - } else { - m_max = 0; - m_min = 1000; - int sum = 0; - for (int i = 0; i < m_measurements.size(); i++) { - sum += (int) m_measurements.value(i); - if (((int)m_measurements.value(i)) > m_max) - m_max = (int)m_measurements.value(i); - if (((int)m_measurements.value(i)) < m_min) - m_min = (int)m_measurements.value(i); - } - return sum/m_measurements.size(); - } -} - -int HeartRate::measurements(int index) const -{ - if (index > m_measurements.size()) - return 0; - else - return (int)m_measurements.value(index); -} - -int HeartRate::measurementsSize() const -{ - return m_measurements.size(); -} - -QString HeartRate::deviceAddress() const -{ - return m_currentDevice.getAddress(); -} - -float HeartRate::caloriesCalculation() -{ - calories = ((-55.0969 + (0.6309 * average()) + (0.1988 * 94) + (0.2017 * 24)) / 4.184) * 60 * time()/3600 ; - return calories; -} - -int HeartRate::numDevices() const -{ - return m_devices.size(); -} - -void HeartRate::startDemo() -{ - m_start = QDateTime::currentDateTime(); - if (!timer) { - timer = new QTimer(this); - connect(timer, SIGNAL(timeout()), this, SLOT(receiveDemo())); - } - timer->start(1000); - setMessage("This is Demo mode"); -} - -void HeartRate::receiveDemo() -{ - m_measurements.append(randomPulse()); - Q_EMIT hrChanged(); -} - -int HeartRate::randomPulse() const -{ - // random number between 50 and 70 - return qrand() % (70 - 50) + 50; -} |