<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>characteristicinfo.cpp Example File | Qt Bluetooth 5.12.2</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtbluetooth-index.html">Qt Bluetooth</a></td><td ><a href="qtbluetooth-lowenergyscanner-example.html">Bluetooth Low Energy Scanner Example</a></td><td >characteristicinfo.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtbluetooth-index.html">Qt 5.12.2 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">characteristicinfo.cpp Example File</h1> <span class="subtitle">lowenergyscanner/characteristicinfo.cpp</span> <!-- $$$lowenergyscanner/characteristicinfo.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/*************************************************************************** ** ** Copyright (C) 2013 BlackBerry Limited. All rights reserved. ** Copyright (C) 2017 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtBluetooth module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "characteristicinfo.h"</span> <span class="preprocessor">#include "qbluetoothuuid.h"</span> <span class="preprocessor">#include <QByteArray></span> CharacteristicInfo<span class="operator">::</span>CharacteristicInfo(<span class="keyword">const</span> <span class="type"><a href="qlowenergycharacteristic.html">QLowEnergyCharacteristic</a></span> <span class="operator">&</span>characteristic): m_characteristic(characteristic) { } <span class="type">void</span> CharacteristicInfo<span class="operator">::</span>setCharacteristic(<span class="keyword">const</span> <span class="type"><a href="qlowenergycharacteristic.html">QLowEnergyCharacteristic</a></span> <span class="operator">&</span>characteristic) { m_characteristic <span class="operator">=</span> characteristic; <span class="keyword">emit</span> characteristicChanged(); } <span class="type">QString</span> CharacteristicInfo<span class="operator">::</span>getName() <span class="keyword">const</span> { <span class="type">QString</span> name <span class="operator">=</span> m_characteristic<span class="operator">.</span>name(); <span class="keyword">if</span> (<span class="operator">!</span>name<span class="operator">.</span>isEmpty()) <span class="keyword">return</span> name; <span class="comment">// find descriptor with CharacteristicUserDescription</span> <span class="keyword">const</span> <span class="type">QList</span><span class="operator"><</span><span class="type"><a href="qlowenergydescriptor.html">QLowEnergyDescriptor</a></span><span class="operator">></span> descriptors <span class="operator">=</span> m_characteristic<span class="operator">.</span>descriptors(); <span class="keyword">for</span> (<span class="keyword">const</span> <span class="type"><a href="qlowenergydescriptor.html">QLowEnergyDescriptor</a></span> <span class="operator">&</span>descriptor : descriptors) { <span class="keyword">if</span> (descriptor<span class="operator">.</span>type() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qbluetoothuuid.html">QBluetoothUuid</a></span><span class="operator">::</span>CharacteristicUserDescription) { name <span class="operator">=</span> descriptor<span class="operator">.</span>value(); <span class="keyword">break</span>; } } <span class="keyword">if</span> (name<span class="operator">.</span>isEmpty()) name <span class="operator">=</span> <span class="string">"Unknown"</span>; <span class="keyword">return</span> name; } <span class="type">QString</span> CharacteristicInfo<span class="operator">::</span>getUuid() <span class="keyword">const</span> { <span class="keyword">const</span> <span class="type"><a href="qbluetoothuuid.html">QBluetoothUuid</a></span> uuid <span class="operator">=</span> m_characteristic<span class="operator">.</span>uuid(); bool success <span class="operator">=</span> <span class="keyword">false</span>; <span class="type">quint16</span> result16 <span class="operator">=</span> uuid<span class="operator">.</span>toUInt16(<span class="operator">&</span>success); <span class="keyword">if</span> (success) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"0x"</span>) <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(result16<span class="operator">,</span> <span class="number">16</span>); <span class="type">quint32</span> result32 <span class="operator">=</span> uuid<span class="operator">.</span>toUInt32(<span class="operator">&</span>success); <span class="keyword">if</span> (success) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"0x"</span>) <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(result32<span class="operator">,</span> <span class="number">16</span>); <span class="keyword">return</span> uuid<span class="operator">.</span>toString()<span class="operator">.</span>remove(QLatin1Char(<span class="char">'{'</span>))<span class="operator">.</span>remove(QLatin1Char(<span class="char">'}'</span>)); } <span class="type">QString</span> CharacteristicInfo<span class="operator">::</span>getValue() <span class="keyword">const</span> { <span class="comment">// Show raw string first and hex value below</span> <span class="type">QByteArray</span> a <span class="operator">=</span> m_characteristic<span class="operator">.</span>value(); <span class="type">QString</span> result; <span class="keyword">if</span> (a<span class="operator">.</span>isEmpty()) { result <span class="operator">=</span> <span class="type">QStringLiteral</span>(<span class="string">"<none>"</span>); <span class="keyword">return</span> result; } result <span class="operator">=</span> a; result <span class="operator">+</span><span class="operator">=</span> QLatin1Char(<span class="char">'\n'</span>); result <span class="operator">+</span><span class="operator">=</span> a<span class="operator">.</span>toHex(); <span class="keyword">return</span> result; } <span class="type">QString</span> CharacteristicInfo<span class="operator">::</span>getHandle() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"0x"</span>) <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(m_characteristic<span class="operator">.</span>handle()<span class="operator">,</span> <span class="number">16</span>); } <span class="type">QString</span> CharacteristicInfo<span class="operator">::</span>getPermission() <span class="keyword">const</span> { <span class="type">QString</span> properties <span class="operator">=</span> <span class="string">"( "</span>; <span class="type">uint</span> permission <span class="operator">=</span> m_characteristic<span class="operator">.</span>properties(); <span class="keyword">if</span> (permission <span class="operator">&</span> <span class="type"><a href="qlowenergycharacteristic.html">QLowEnergyCharacteristic</a></span><span class="operator">::</span>Read) properties <span class="operator">+</span><span class="operator">=</span> <span class="type">QStringLiteral</span>(<span class="string">" Read"</span>); <span class="keyword">if</span> (permission <span class="operator">&</span> <span class="type"><a href="qlowenergycharacteristic.html">QLowEnergyCharacteristic</a></span><span class="operator">::</span>Write) properties <span class="operator">+</span><span class="operator">=</span> <span class="type">QStringLiteral</span>(<span class="string">" Write"</span>); <span class="keyword">if</span> (permission <span class="operator">&</span> <span class="type"><a href="qlowenergycharacteristic.html">QLowEnergyCharacteristic</a></span><span class="operator">::</span>Notify) properties <span class="operator">+</span><span class="operator">=</span> <span class="type">QStringLiteral</span>(<span class="string">" Notify"</span>); <span class="keyword">if</span> (permission <span class="operator">&</span> <span class="type"><a href="qlowenergycharacteristic.html">QLowEnergyCharacteristic</a></span><span class="operator">::</span>Indicate) properties <span class="operator">+</span><span class="operator">=</span> <span class="type">QStringLiteral</span>(<span class="string">" Indicate"</span>); <span class="keyword">if</span> (permission <span class="operator">&</span> <span class="type"><a href="qlowenergycharacteristic.html">QLowEnergyCharacteristic</a></span><span class="operator">::</span>ExtendedProperty) properties <span class="operator">+</span><span class="operator">=</span> <span class="type">QStringLiteral</span>(<span class="string">" ExtendedProperty"</span>); <span class="keyword">if</span> (permission <span class="operator">&</span> <span class="type"><a href="qlowenergycharacteristic.html">QLowEnergyCharacteristic</a></span><span class="operator">::</span>Broadcasting) properties <span class="operator">+</span><span class="operator">=</span> <span class="type">QStringLiteral</span>(<span class="string">" Broadcast"</span>); <span class="keyword">if</span> (permission <span class="operator">&</span> <span class="type"><a href="qlowenergycharacteristic.html">QLowEnergyCharacteristic</a></span><span class="operator">::</span>WriteNoResponse) properties <span class="operator">+</span><span class="operator">=</span> <span class="type">QStringLiteral</span>(<span class="string">" WriteNoResp"</span>); <span class="keyword">if</span> (permission <span class="operator">&</span> <span class="type"><a href="qlowenergycharacteristic.html">QLowEnergyCharacteristic</a></span><span class="operator">::</span>WriteSigned) properties <span class="operator">+</span><span class="operator">=</span> <span class="type">QStringLiteral</span>(<span class="string">" WriteSigned"</span>); properties <span class="operator">+</span><span class="operator">=</span> <span class="string">" )"</span>; <span class="keyword">return</span> properties; } <span class="type"><a href="qlowenergycharacteristic.html">QLowEnergyCharacteristic</a></span> CharacteristicInfo<span class="operator">::</span>getCharacteristic() <span class="keyword">const</span> { <span class="keyword">return</span> m_characteristic; } </pre> </div> <!-- @@@lowenergyscanner/characteristicinfo.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>