-
Oliver Wolff authored
Change-Id: I87047bbc8b777f597ac4843c0c5466489d764f46 Reviewed-by:
Alex Blasche <alexander.blasche@qt.io> Reviewed-by:
Timur Pocheptsov <timur.pocheptsov@qt.io>
b211fa43
device.cpp 11.03 KiB
/******************************************************************************* Copyright (C) 2013 BlackBerry Limited. All rights reserved.** Copyright (C) 2015 The Qt Company Ltd.** Contact: http://www.qt.io/licensing/**** This file is part 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 "device.h"#include <qbluetoothaddress.h>#include <qbluetoothdevicediscoveryagent.h>#include <qbluetoothlocaldevice.h>#include <qbluetoothdeviceinfo.h>#include <qbluetoothservicediscoveryagent.h>#include <QDebug>#include <QList>#include <QTimer>Device::Device(): connected(false), controller(0), m_deviceScanState(false), randomAddress(false){ //! [les-devicediscovery-1] discoveryAgent = new QBluetoothDeviceDiscoveryAgent(); discoveryAgent->setLowEnergyDiscoveryTimeout(5000); connect(discoveryAgent, &QBluetoothDeviceDiscoveryAgent::deviceDiscovered, this, &Device::addDevice); connect(discoveryAgent, QOverload<QBluetoothDeviceDiscoveryAgent::Error>::of(&QBluetoothDeviceDiscoveryAgent::error), this, &Device::deviceScanError); connect(discoveryAgent, &QBluetoothDeviceDiscoveryAgent::finished, this, &Device::deviceScanFinished); //! [les-devicediscovery-1] setUpdate("Search");}Device::~Device(){ delete discoveryAgent;7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
delete controller;
qDeleteAll(devices);
qDeleteAll(m_services);
qDeleteAll(m_characteristics);
devices.clear();
m_services.clear();
m_characteristics.clear();
}
void Device::startDeviceDiscovery()
{
qDeleteAll(devices);
devices.clear();
emit devicesUpdated();
setUpdate("Scanning for devices ...");
//! [les-devicediscovery-2]
discoveryAgent->start(QBluetoothDeviceDiscoveryAgent::LowEnergyMethod);
//! [les-devicediscovery-2]
if (discoveryAgent->isActive()) {
m_deviceScanState = true;
Q_EMIT stateChanged();
}
}
//! [les-devicediscovery-3]
void Device::addDevice(const QBluetoothDeviceInfo &info)
{
if (info.coreConfigurations() & QBluetoothDeviceInfo::LowEnergyCoreConfiguration) {
DeviceInfo *d = new DeviceInfo(info);
devices.append(d);
setUpdate("Last device added: " + d->getName());
}
}
//! [les-devicediscovery-3]
void Device::deviceScanFinished()
{
emit devicesUpdated();
m_deviceScanState = false;
emit stateChanged();
if (devices.isEmpty())
setUpdate("No Low Energy devices found...");
else
setUpdate("Done! Scan Again!");
}
QVariant Device::getDevices()
{
return QVariant::fromValue(devices);
}
QVariant Device::getServices()
{
return QVariant::fromValue(m_services);
}
QVariant Device::getCharacteristics()
{
return QVariant::fromValue(m_characteristics);
}
QString Device::getUpdate()
{
return m_message;
}
void Device::scanServices(const QString &address)
{
141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210
// We need the current device for service discovery.
for (int i = 0; i < devices.size(); i++) {
if (((DeviceInfo*)devices.at(i))->getAddress() == address )
currentDevice.setDevice(((DeviceInfo*)devices.at(i))->getDevice());
}
if (!currentDevice.getDevice().isValid()) {
qWarning() << "Not a valid device";
return;
}
qDeleteAll(m_characteristics);
m_characteristics.clear();
emit characteristicsUpdated();
qDeleteAll(m_services);
m_services.clear();
emit servicesUpdated();
setUpdate("Back\n(Connecting to device...)");
if (controller && m_previousAddress != currentDevice.getAddress()) {
controller->disconnectFromDevice();
delete controller;
controller = 0;
}
//! [les-controller-1]
if (!controller) {
// Connecting signals and slots for connecting to LE services.
controller = new QLowEnergyController(currentDevice.getDevice());
connect(controller, &QLowEnergyController::connected,
this, &Device::deviceConnected);
connect(controller, QOverload<QLowEnergyController::Error>::of(&QLowEnergyController::error),
this, &Device::errorReceived);
connect(controller, &QLowEnergyController::disconnected,
this, &Device::deviceDisconnected);
connect(controller, &QLowEnergyController::serviceDiscovered,
this, &Device::addLowEnergyService);
connect(controller, &QLowEnergyController::discoveryFinished,
this, &Device::serviceScanDone);
}
if (isRandomAddress())
controller->setRemoteAddressType(QLowEnergyController::RandomAddress);
else
controller->setRemoteAddressType(QLowEnergyController::PublicAddress);
controller->connectToDevice();
//! [les-controller-1]
m_previousAddress = currentDevice.getAddress();
}
void Device::addLowEnergyService(const QBluetoothUuid &serviceUuid)
{
//! [les-service-1]
QLowEnergyService *service = controller->createServiceObject(serviceUuid);
if (!service) {
qWarning() << "Cannot create service for uuid";
return;
}
//! [les-service-1]
ServiceInfo *serv = new ServiceInfo(service);
m_services.append(serv);
emit servicesUpdated();
}
//! [les-service-1]
void Device::serviceScanDone()
211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280
{
setUpdate("Back\n(Service scan done!)");
// force UI in case we didn't find anything
if (m_services.isEmpty())
emit servicesUpdated();
}
void Device::connectToService(const QString &uuid)
{
QLowEnergyService *service = 0;
for (int i = 0; i < m_services.size(); i++) {
ServiceInfo *serviceInfo = (ServiceInfo*)m_services.at(i);
if (serviceInfo->getUuid() == uuid) {
service = serviceInfo->service();
break;
}
}
if (!service)
return;
qDeleteAll(m_characteristics);
m_characteristics.clear();
emit characteristicsUpdated();
if (service->state() == QLowEnergyService::DiscoveryRequired) {
//! [les-service-3]
connect(service, &QLowEnergyService::stateChanged,
this, &Device::serviceDetailsDiscovered);
service->discoverDetails();
setUpdate("Back\n(Discovering details...)");
//! [les-service-3]
return;
}
//discovery already done
const QList<QLowEnergyCharacteristic> chars = service->characteristics();
foreach (const QLowEnergyCharacteristic &ch, chars) {
CharacteristicInfo *cInfo = new CharacteristicInfo(ch);
m_characteristics.append(cInfo);
}
QTimer::singleShot(0, this, &Device::characteristicsUpdated);
}
void Device::deviceConnected()
{
setUpdate("Back\n(Discovering services...)");
connected = true;
//! [les-service-2]
controller->discoverServices();
//! [les-service-2]
}
void Device::errorReceived(QLowEnergyController::Error /*error*/)
{
qWarning() << "Error: " << controller->errorString();
setUpdate(QString("Back\n(%1)").arg(controller->errorString()));
}
void Device::setUpdate(QString message)
{
m_message = message;
emit updateChanged();
}
void Device::disconnectFromDevice()
{
// UI always expects disconnect() signal when calling this signal
// TODO what is really needed is to extend state() to a multi value
281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350
// and thus allowing UI to keep track of controller progress in addition to
// device scan progress
if (controller->state() != QLowEnergyController::UnconnectedState)
controller->disconnectFromDevice();
else
deviceDisconnected();
}
void Device::deviceDisconnected()
{
qWarning() << "Disconnect from device";
emit disconnected();
}
void Device::serviceDetailsDiscovered(QLowEnergyService::ServiceState newState)
{
if (newState != QLowEnergyService::ServiceDiscovered) {
// do not hang in "Scanning for characteristics" mode forever
// in case the service discovery failed
// We have to queue the signal up to give UI time to even enter
// the above mode
if (newState != QLowEnergyService::DiscoveringServices) {
QMetaObject::invokeMethod(this, "characteristicsUpdated",
Qt::QueuedConnection);
}
return;
}
QLowEnergyService *service = qobject_cast<QLowEnergyService *>(sender());
if (!service)
return;
//! [les-chars]
const QList<QLowEnergyCharacteristic> chars = service->characteristics();
foreach (const QLowEnergyCharacteristic &ch, chars) {
CharacteristicInfo *cInfo = new CharacteristicInfo(ch);
m_characteristics.append(cInfo);
}
//! [les-chars]
emit characteristicsUpdated();
}
void Device::deviceScanError(QBluetoothDeviceDiscoveryAgent::Error error)
{
if (error == QBluetoothDeviceDiscoveryAgent::PoweredOffError)
setUpdate("The Bluetooth adaptor is powered off, power it on before doing discovery.");
else if (error == QBluetoothDeviceDiscoveryAgent::InputOutputError)
setUpdate("Writing or reading from the device resulted in an error.");
else
setUpdate("An unknown error has occurred.");
m_deviceScanState = false;
emit devicesUpdated();
emit stateChanged();
}
bool Device::state()
{
return m_deviceScanState;
}
bool Device::hasControllerError() const
{
if (controller && controller->error() != QLowEnergyController::NoError)
return true;
return false;
351352353354355356357358359360361362363
}
bool Device::isRandomAddress() const
{
return randomAddress;
}
void Device::setRandomAddress(bool newValue)
{
randomAddress = newValue;
emit randomAddressChanged();
}