367 lines
15 KiB
C++
367 lines
15 KiB
C++
/***************************************************************************
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**
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** Copyright (C) 2021 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the QtBluetooth module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QBluetoothLocalDevice>
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#include <QLatin1String>
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#include <QLoggingCategory>
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#include <QLowEnergyAdvertisingData>
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#include <QLowEnergyAdvertisingParameters>
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#include <QLowEnergyCharacteristicData>
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#include <QLowEnergyController>
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#include <QLowEnergyDescriptorData>
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#include <QLowEnergyServiceData>
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#include <QLowEnergyDescriptorData>
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#include <QTimer>
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#if defined(Q_OS_ANDROID) || defined(Q_OS_IOS)
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#include <QGuiApplication>
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#else
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#include <QCoreApplication>
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#endif // Q_OS_ANDROID || Q_OS_IOS
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#include <thread>
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static const QLatin1String largeCharacteristicServiceUuid("1f85e37c-ac16-11eb-ae5c-93d3a763feed");
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static const QLatin1String largeCharacteristicCharUuid("40e4f68e-ac16-11eb-9956-cfe55a8c370c");
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static const QLatin1String
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notificationIndicationTestServiceUuid("bb137ac5-5716-4b80-873b-e2d11d29efe2");
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static const QLatin1String
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notificationIndicationTestChar1Uuid("6da4d652-0248-478a-a5a8-1e2f076158cc");
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static const QLatin1String
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notificationIndicationTestChar2Uuid("990930f0-b9cc-4c27-8c1b-ebc2bcae5c95");
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static const QLatin1String
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notificationIndicationTestChar3Uuid("9a60486b-de5b-4e03-b914-4e158c0bd388");
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static const QLatin1String
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notificationIndicationTestChar4Uuid("d92435d4-6c2e-43f8-a6be-bbb66b5a3e28");
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static const QLatin1String connectionCountServiceUuid("78c61a07-a0f9-4b92-be2d-2570d8dbf010");
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static const QLatin1String connectionCountCharUuid("9414ec2d-792f-46a2-a19e-186d0fb38a08");
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static const QLatin1String mtuServiceUuid("9a9483eb-cf4f-4c32-9a6b-794238d5b483");
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static const QLatin1String mtuCharUuid("960d7e2a-a850-4a70-8064-cd74e9ccb6ff");
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int main(int argc, char *argv[])
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{
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qDebug() << "build:" << __DATE__ << __TIME__;
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QLoggingCategory::setFilterRules(QStringLiteral("qt.bluetooth* = true"));
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#if defined(Q_OS_ANDROID) || defined(Q_OS_IOS)
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QGuiApplication app(argc, argv);
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#else
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QCoreApplication app(argc, argv);
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#endif // Q_OS_ANDROID || Q_OS_IOS
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// prepare list of services
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QList<QLowEnergyServiceData> serviceDefinitions;
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int connectioncount = 0;
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{
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// connection count service
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QLowEnergyServiceData serviceData;
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serviceData.setType(QLowEnergyServiceData::ServiceTypePrimary);
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serviceData.setUuid(QBluetoothUuid(connectionCountServiceUuid));
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QLowEnergyCharacteristicData charData;
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charData.setUuid(QBluetoothUuid(connectionCountCharUuid));
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size_t size = sizeof(int);
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QByteArray initialValue(size, 0);
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charData.setValue(initialValue);
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charData.setValueLength(size, size);
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charData.setProperties(QLowEnergyCharacteristic::PropertyType::Read);
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serviceData.addCharacteristic(charData);
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serviceDefinitions << serviceData;
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}
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{
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// mtu size service
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QLowEnergyServiceData serviceData;
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serviceData.setType(QLowEnergyServiceData::ServiceTypePrimary);
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serviceData.setUuid(QBluetoothUuid(mtuServiceUuid));
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QLowEnergyCharacteristicData charData;
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charData.setUuid(QBluetoothUuid(mtuCharUuid));
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size_t size = sizeof(int);
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int mtu = 23;
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QByteArray initialValue((const char *)&mtu, sizeof(int));
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charData.setValue(initialValue);
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charData.setValueLength(size, size);
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charData.setProperties(QLowEnergyCharacteristic::PropertyType::Read
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| QLowEnergyCharacteristic::PropertyType::Notify);
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serviceData.addCharacteristic(charData);
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serviceDefinitions << serviceData;
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}
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{
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// large characteristic service
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//
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// This is just a service offering a 512 bytes large characteristic which can
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// be read and written. It is used to test reading and writing at MTU sizes smaller
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// than the size of the characteristic.
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QLowEnergyServiceData serviceData;
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serviceData.setType(QLowEnergyServiceData::ServiceTypePrimary);
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serviceData.setUuid(QBluetoothUuid(largeCharacteristicServiceUuid));
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QLowEnergyCharacteristicData charData;
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charData.setUuid(QBluetoothUuid(largeCharacteristicCharUuid));
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QByteArray initialValue(512, 0);
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initialValue[0] = 0x0b;
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charData.setValue(initialValue);
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charData.setValueLength(512, 512);
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charData.setProperties(QLowEnergyCharacteristic::PropertyType::Read
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| QLowEnergyCharacteristic::PropertyType::Write);
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serviceData.addCharacteristic(charData);
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serviceDefinitions << serviceData;
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}
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{
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// notification service
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//
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// This is a service which offers:
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// - one characteristic which does not support notification or indication
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// - one characteristic which does only support notification
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// - one characteristic which does only support indication
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// - one characteristic which supports both notification or indication
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// to test their discovery
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QLowEnergyServiceData serviceData;
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serviceData.setType(QLowEnergyServiceData::ServiceTypePrimary);
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serviceData.setUuid(QBluetoothUuid(notificationIndicationTestServiceUuid));
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{
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QLowEnergyCharacteristicData charData;
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charData.setUuid(QBluetoothUuid(notificationIndicationTestChar1Uuid));
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QByteArray initialValue(8, 0);
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initialValue[0] = 0x0b;
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charData.setValue(initialValue);
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charData.setValueLength(8, 8);
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charData.setProperties(QLowEnergyCharacteristic::PropertyType::Read);
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serviceData.addCharacteristic(charData);
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}
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{
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QLowEnergyCharacteristicData charData;
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charData.setUuid(QBluetoothUuid(notificationIndicationTestChar2Uuid));
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QByteArray initialValue(8, 0);
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initialValue[0] = 0x0b;
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charData.setValue(initialValue);
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charData.setValueLength(8, 8);
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charData.setProperties(QLowEnergyCharacteristic::PropertyType::Read
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| QLowEnergyCharacteristic::PropertyType::Notify);
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const QLowEnergyDescriptorData clientConfig(
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QBluetoothUuid::DescriptorType::ClientCharacteristicConfiguration,
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QLowEnergyCharacteristic::CCCDDisable);
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charData.addDescriptor(clientConfig);
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serviceData.addCharacteristic(charData);
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}
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{
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QLowEnergyCharacteristicData charData;
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charData.setUuid(QBluetoothUuid(notificationIndicationTestChar3Uuid));
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QByteArray initialValue(8, 0);
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initialValue[0] = 0x0b;
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charData.setValue(initialValue);
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charData.setValueLength(8, 8);
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charData.setProperties(QLowEnergyCharacteristic::PropertyType::Read
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| QLowEnergyCharacteristic::PropertyType::Indicate);
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const QLowEnergyDescriptorData clientConfig(
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QBluetoothUuid::DescriptorType::ClientCharacteristicConfiguration,
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QLowEnergyCharacteristic::CCCDDisable);
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charData.addDescriptor(clientConfig);
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serviceData.addCharacteristic(charData);
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}
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{
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QLowEnergyCharacteristicData charData;
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charData.setUuid(QBluetoothUuid(notificationIndicationTestChar4Uuid));
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QByteArray initialValue(8, 0);
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initialValue[0] = 0x0b;
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charData.setValue(initialValue);
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charData.setValueLength(8, 8);
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charData.setProperties(QLowEnergyCharacteristic::PropertyType::Read
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| QLowEnergyCharacteristic::PropertyType::Notify
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| QLowEnergyCharacteristic::PropertyType::Indicate);
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const QLowEnergyDescriptorData clientConfig(
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QBluetoothUuid::DescriptorType::ClientCharacteristicConfiguration,
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QLowEnergyCharacteristic::CCCDDisable);
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charData.addDescriptor(clientConfig);
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serviceData.addCharacteristic(charData);
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}
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serviceDefinitions << serviceData;
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}
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#ifndef Q_OS_IOS
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auto localAdapters = QBluetoothLocalDevice::allDevices();
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QBluetoothLocalDevice adapter(localAdapters.back().address());
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adapter.setHostMode(QBluetoothLocalDevice::HostDiscoverable);
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#endif // Q_OS_IOS
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// Advertising data
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QLowEnergyAdvertisingData advertisingData;
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advertisingData.setDiscoverability(QLowEnergyAdvertisingData::DiscoverabilityGeneral);
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advertisingData.setIncludePowerLevel(true);
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advertisingData.setLocalName("BluetoothTestDevice");
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QList<QBluetoothUuid> serviceUuids;
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for (const auto &serviceData : serviceDefinitions) {
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serviceUuids << serviceData.uuid();
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}
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// leads to too large advertising data
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// advertisingData.setServices(serviceUuids);
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// start advertising
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#ifndef Q_OS_IOS
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auto devices = QBluetoothLocalDevice::allDevices();
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qDebug() << "advertising on" << devices.back().address();
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const QScopedPointer<QLowEnergyController> leController(
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QLowEnergyController::createPeripheral(devices.back().address()));
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#else
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const QScopedPointer<QLowEnergyController> leController(
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QLowEnergyController::createPeripheral());
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#endif // Q_OS_IOS
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QList<QSharedPointer<QLowEnergyService>> services;
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for (const auto &serviceData : serviceDefinitions) {
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services.emplaceBack(leController->addService(serviceData));
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}
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leController->startAdvertising(QLowEnergyAdvertisingParameters(), advertisingData,
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advertisingData);
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auto reconnect = [&connectioncount, &leController, advertisingData, &services, serviceDefinitions]() {
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connectioncount++;
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for (int i = 0; i < services.size(); ++i) {
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services[i].reset(leController->addService(serviceDefinitions[i]));
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}
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{
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// set connection counter
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Q_ASSERT(services[0]->serviceUuid()
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== QBluetoothUuid(connectionCountServiceUuid));
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QByteArray value((const char *)&connectioncount, sizeof(int));
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QLowEnergyCharacteristic characteristic = services[0]->characteristic(
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QBluetoothUuid(connectionCountCharUuid));
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Q_ASSERT(characteristic.isValid());
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services[0]->writeCharacteristic(characteristic, value);
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}
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bool allValid = true;
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for (const auto &service : services) {
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allValid = allValid & !service.isNull();
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}
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if (allValid){
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leController->startAdvertising(QLowEnergyAdvertisingParameters(), advertisingData,
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advertisingData);
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qDebug() << "starting advertising for " << connectioncount << "th time.";
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}
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else
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qDebug() << "Cannot start advertising: Service not valid.";
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};
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QObject::connect(leController.data(), &QLowEnergyController::disconnected, reconnect);
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QObject::connect(leController.data(), &QLowEnergyController::mtuChanged, [&services](int mtu) {
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qDebug() << "MTU changed, callback called.";
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Q_ASSERT(services[1]->serviceUuid() == QBluetoothUuid(mtuServiceUuid));
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QByteArray value((const char *)&mtu, sizeof(int));
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QLowEnergyCharacteristic characteristic =
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services[1]->characteristic(QBluetoothUuid(mtuCharUuid));
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Q_ASSERT(characteristic.isValid());
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services[1]->writeCharacteristic(characteristic, value);
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});
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QTimer notificationTestTimer;
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quint64 currentCharacteristicValue = 0;
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const auto characteristicChanger = [&services, ¤tCharacteristicValue]() {
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QByteArray value((const char *)¤tCharacteristicValue, 8);
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Q_ASSERT(services[3]->serviceUuid()
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== QBluetoothUuid(notificationIndicationTestServiceUuid));
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{
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QLowEnergyCharacteristic characteristic = services[3]->characteristic(
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QBluetoothUuid(notificationIndicationTestChar2Uuid));
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Q_ASSERT(characteristic.isValid());
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services[3]->writeCharacteristic(characteristic,
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value); // Potentially causes notification.
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}
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{
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QLowEnergyCharacteristic characteristic = services[3]->characteristic(
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QBluetoothUuid(notificationIndicationTestChar3Uuid));
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Q_ASSERT(characteristic.isValid());
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services[3]->writeCharacteristic(characteristic,
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value); // Potentially causes notification.
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}
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{
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QLowEnergyCharacteristic characteristic = services[3]->characteristic(
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QBluetoothUuid(notificationIndicationTestChar4Uuid));
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Q_ASSERT(characteristic.isValid());
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services[3]->writeCharacteristic(characteristic,
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value); // Potentially causes notification.
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}
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++currentCharacteristicValue;
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};
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QObject::connect(¬ificationTestTimer, &QTimer::timeout, characteristicChanger);
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notificationTestTimer.start(100);
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return app.exec();
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}
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