<?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>mainwindow.cpp Example File | Qt Serial Bus 5.9</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 5.9</td><td ><a href="qtserialbus-index.html">Qt Serial Bus</a></td><td ><a href="qtserialbus-modbus-master-example.html">Modbus Master example</a></td><td >mainwindow.cpp Example File</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</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">mainwindow.cpp Example File</h1>
<span class="subtitle">modbus/master/mainwindow.cpp</span>
<!-- $$$modbus/master/mainwindow.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the QtSerialBus module.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 "mainwindow.h"</span>
<span class="preprocessor">#include "ui_mainwindow.h"</span>
<span class="preprocessor">#include "settingsdialog.h"</span>
<span class="preprocessor">#include "writeregistermodel.h"</span>
<span class="preprocessor">#include <QModbusTcpClient></span>
<span class="preprocessor">#include <QModbusRtuSerialMaster></span>
<span class="preprocessor">#include <QStandardItemModel></span>
<span class="preprocessor">#include <QStatusBar></span>
<span class="preprocessor">#include <QUrl></span>
<span class="keyword">enum</span> ModbusConnection {
Serial<span class="operator">,</span>
Tcp
};
MainWindow<span class="operator">::</span>MainWindow(<span class="type">QWidget</span> <span class="operator">*</span>parent)
: <span class="type">QMainWindow</span>(parent)
<span class="operator">,</span> ui(<span class="keyword">new</span> Ui<span class="operator">::</span>MainWindow)
<span class="operator">,</span> lastRequest(nullptr)
<span class="operator">,</span> modbusDevice(nullptr)
{
ui<span class="operator">-</span><span class="operator">></span>setupUi(<span class="keyword">this</span>);
m_settingsDialog <span class="operator">=</span> <span class="keyword">new</span> SettingsDialog(<span class="keyword">this</span>);
initActions();
writeModel <span class="operator">=</span> <span class="keyword">new</span> WriteRegisterModel(<span class="keyword">this</span>);
writeModel<span class="operator">-</span><span class="operator">></span>setStartAddress(ui<span class="operator">-</span><span class="operator">></span>writeAddress<span class="operator">-</span><span class="operator">></span>value());
writeModel<span class="operator">-</span><span class="operator">></span>setNumberOfValues(ui<span class="operator">-</span><span class="operator">></span>writeSize<span class="operator">-</span><span class="operator">></span>currentText());
ui<span class="operator">-</span><span class="operator">></span>writeValueTable<span class="operator">-</span><span class="operator">></span>setModel(writeModel);
ui<span class="operator">-</span><span class="operator">></span>writeValueTable<span class="operator">-</span><span class="operator">></span>hideColumn(<span class="number">2</span>);
connect(writeModel<span class="operator">,</span> <span class="operator">&</span>WriteRegisterModel<span class="operator">::</span>updateViewport<span class="operator">,</span> ui<span class="operator">-</span><span class="operator">></span>writeValueTable<span class="operator">-</span><span class="operator">></span>viewport()<span class="operator">,</span>
<span class="keyword">static_cast</span><span class="operator"><</span><span class="type">void</span> (<span class="type">QWidget</span><span class="operator">::</span><span class="operator">*</span>)()<span class="operator">></span>(<span class="operator">&</span><span class="type">QWidget</span><span class="operator">::</span>update));
ui<span class="operator">-</span><span class="operator">></span>writeTable<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Coils"</span>)<span class="operator">,</span> <span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span><span class="operator">::</span>Coils);
ui<span class="operator">-</span><span class="operator">></span>writeTable<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Discrete Inputs"</span>)<span class="operator">,</span> <span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span><span class="operator">::</span>DiscreteInputs);
ui<span class="operator">-</span><span class="operator">></span>writeTable<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Input Registers"</span>)<span class="operator">,</span> <span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span><span class="operator">::</span>InputRegisters);
ui<span class="operator">-</span><span class="operator">></span>writeTable<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Holding Registers"</span>)<span class="operator">,</span> <span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span><span class="operator">::</span>HoldingRegisters);
ui<span class="operator">-</span><span class="operator">></span>connectType<span class="operator">-</span><span class="operator">></span>setCurrentIndex(<span class="number">0</span>);
on_connectType_currentIndexChanged(<span class="number">0</span>);
<span class="keyword">auto</span> model <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QStandardItemModel</span>(<span class="number">10</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="keyword">this</span>);
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> <span class="number">10</span>; <span class="operator">+</span><span class="operator">+</span>i)
model<span class="operator">-</span><span class="operator">></span>setItem(i<span class="operator">,</span> <span class="keyword">new</span> <span class="type">QStandardItem</span>(<span class="type">QStringLiteral</span>(<span class="string">"%1"</span>)<span class="operator">.</span>arg(i <span class="operator">+</span> <span class="number">1</span>)));
ui<span class="operator">-</span><span class="operator">></span>writeSize<span class="operator">-</span><span class="operator">></span>setModel(model);
ui<span class="operator">-</span><span class="operator">></span>writeSize<span class="operator">-</span><span class="operator">></span>setCurrentText(<span class="string">"10"</span>);
connect(ui<span class="operator">-</span><span class="operator">></span>writeSize<span class="operator">,</span><span class="operator">&</span><span class="type">QComboBox</span><span class="operator">::</span>currentTextChanged<span class="operator">,</span> writeModel<span class="operator">,</span>
<span class="operator">&</span>WriteRegisterModel<span class="operator">::</span>setNumberOfValues);
<span class="keyword">auto</span> valueChanged <span class="operator">=</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">void</span> (<span class="type">QSpinBox</span><span class="operator">::</span><span class="operator">*</span>)(<span class="type">int</span>)<span class="operator">></span> (<span class="operator">&</span><span class="type">QSpinBox</span><span class="operator">::</span>valueChanged);
connect(ui<span class="operator">-</span><span class="operator">></span>writeAddress<span class="operator">,</span> valueChanged<span class="operator">,</span> writeModel<span class="operator">,</span> <span class="operator">&</span>WriteRegisterModel<span class="operator">::</span>setStartAddress);
connect(ui<span class="operator">-</span><span class="operator">></span>writeAddress<span class="operator">,</span> valueChanged<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">[</span><span class="keyword">this</span><span class="operator">,</span> model<span class="operator">]</span>(<span class="type">int</span> i) {
<span class="type">int</span> lastPossibleIndex <span class="operator">=</span> <span class="number">0</span>;
<span class="keyword">const</span> <span class="type">int</span> currentIndex <span class="operator">=</span> ui<span class="operator">-</span><span class="operator">></span>writeSize<span class="operator">-</span><span class="operator">></span>currentIndex();
<span class="keyword">for</span> (<span class="type">int</span> ii <span class="operator">=</span> <span class="number">0</span>; ii <span class="operator"><</span> <span class="number">10</span>; <span class="operator">+</span><span class="operator">+</span>ii) {
<span class="keyword">if</span> (ii <span class="operator"><</span> (<span class="number">10</span> <span class="operator">-</span> i)) {
lastPossibleIndex <span class="operator">=</span> ii;
model<span class="operator">-</span><span class="operator">></span>item(ii)<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
} <span class="keyword">else</span> {
model<span class="operator">-</span><span class="operator">></span>item(ii)<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
}
}
<span class="keyword">if</span> (currentIndex <span class="operator">></span> lastPossibleIndex)
ui<span class="operator">-</span><span class="operator">></span>writeSize<span class="operator">-</span><span class="operator">></span>setCurrentIndex(lastPossibleIndex);
});
}
MainWindow<span class="operator">::</span><span class="operator">~</span>MainWindow()
{
<span class="keyword">if</span> (modbusDevice)
modbusDevice<span class="operator">-</span><span class="operator">></span>disconnectDevice();
<span class="keyword">delete</span> modbusDevice;
<span class="keyword">delete</span> ui;
}
<span class="type">void</span> MainWindow<span class="operator">::</span>initActions()
{
ui<span class="operator">-</span><span class="operator">></span>actionConnect<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
ui<span class="operator">-</span><span class="operator">></span>actionDisconnect<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
ui<span class="operator">-</span><span class="operator">></span>actionExit<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
ui<span class="operator">-</span><span class="operator">></span>actionOptions<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
connect(ui<span class="operator">-</span><span class="operator">></span>actionConnect<span class="operator">,</span> <span class="operator">&</span><span class="type">QAction</span><span class="operator">::</span>triggered<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>on_connectButton_clicked);
connect(ui<span class="operator">-</span><span class="operator">></span>actionDisconnect<span class="operator">,</span> <span class="operator">&</span><span class="type">QAction</span><span class="operator">::</span>triggered<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>on_connectButton_clicked);
connect(ui<span class="operator">-</span><span class="operator">></span>actionExit<span class="operator">,</span> <span class="operator">&</span><span class="type">QAction</span><span class="operator">::</span>triggered<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span><span class="type">QMainWindow</span><span class="operator">::</span>close);
connect(ui<span class="operator">-</span><span class="operator">></span>actionOptions<span class="operator">,</span> <span class="operator">&</span><span class="type">QAction</span><span class="operator">::</span>triggered<span class="operator">,</span> m_settingsDialog<span class="operator">,</span> <span class="operator">&</span><span class="type">QDialog</span><span class="operator">::</span>show);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>on_connectType_currentIndexChanged(<span class="type">int</span> index)
{
<span class="keyword">if</span> (modbusDevice) {
modbusDevice<span class="operator">-</span><span class="operator">></span>disconnectDevice();
<span class="keyword">delete</span> modbusDevice;
modbusDevice <span class="operator">=</span> nullptr;
}
<span class="keyword">auto</span> type <span class="operator">=</span> <span class="keyword">static_cast</span><span class="operator"><</span>ModbusConnection<span class="operator">></span> (index);
<span class="keyword">if</span> (type <span class="operator">=</span><span class="operator">=</span> Serial) {
modbusDevice <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qmodbusrtuserialmaster.html">QModbusRtuSerialMaster</a></span>(<span class="keyword">this</span>);
} <span class="keyword">else</span> <span class="keyword">if</span> (type <span class="operator">=</span><span class="operator">=</span> Tcp) {
modbusDevice <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qmodbustcpclient.html">QModbusTcpClient</a></span>(<span class="keyword">this</span>);
<span class="keyword">if</span> (ui<span class="operator">-</span><span class="operator">></span>portEdit<span class="operator">-</span><span class="operator">></span>text()<span class="operator">.</span>isEmpty())
ui<span class="operator">-</span><span class="operator">></span>portEdit<span class="operator">-</span><span class="operator">></span>setText(QLatin1Literal(<span class="string">"127.0.0.1:502"</span>));
}
connect(modbusDevice<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmodbusclient.html">QModbusClient</a></span><span class="operator">::</span>errorOccurred<span class="operator">,</span> <span class="operator">[</span><span class="keyword">this</span><span class="operator">]</span>(<span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>Error) {
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(modbusDevice<span class="operator">-</span><span class="operator">></span>errorString()<span class="operator">,</span> <span class="number">5000</span>);
});
<span class="keyword">if</span> (<span class="operator">!</span>modbusDevice) {
ui<span class="operator">-</span><span class="operator">></span>connectButton<span class="operator">-</span><span class="operator">></span>setDisabled(<span class="keyword">true</span>);
<span class="keyword">if</span> (type <span class="operator">=</span><span class="operator">=</span> Serial)
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Could not create Modbus master."</span>)<span class="operator">,</span> <span class="number">5000</span>);
<span class="keyword">else</span>
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Could not create Modbus client."</span>)<span class="operator">,</span> <span class="number">5000</span>);
} <span class="keyword">else</span> {
connect(modbusDevice<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmodbusclient.html">QModbusClient</a></span><span class="operator">::</span>stateChanged<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>onStateChanged);
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>on_connectButton_clicked()
{
<span class="keyword">if</span> (<span class="operator">!</span>modbusDevice)
<span class="keyword">return</span>;
statusBar()<span class="operator">-</span><span class="operator">></span>clearMessage();
<span class="keyword">if</span> (modbusDevice<span class="operator">-</span><span class="operator">></span>state() <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>ConnectedState) {
<span class="keyword">if</span> (<span class="keyword">static_cast</span><span class="operator"><</span>ModbusConnection<span class="operator">></span> (ui<span class="operator">-</span><span class="operator">></span>connectType<span class="operator">-</span><span class="operator">></span>currentIndex()) <span class="operator">=</span><span class="operator">=</span> Serial) {
modbusDevice<span class="operator">-</span><span class="operator">></span>setConnectionParameter(<span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>SerialPortNameParameter<span class="operator">,</span>
ui<span class="operator">-</span><span class="operator">></span>portEdit<span class="operator">-</span><span class="operator">></span>text());
modbusDevice<span class="operator">-</span><span class="operator">></span>setConnectionParameter(<span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>SerialParityParameter<span class="operator">,</span>
m_settingsDialog<span class="operator">-</span><span class="operator">></span>settings()<span class="operator">.</span>parity);
modbusDevice<span class="operator">-</span><span class="operator">></span>setConnectionParameter(<span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>SerialBaudRateParameter<span class="operator">,</span>
m_settingsDialog<span class="operator">-</span><span class="operator">></span>settings()<span class="operator">.</span>baud);
modbusDevice<span class="operator">-</span><span class="operator">></span>setConnectionParameter(<span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>SerialDataBitsParameter<span class="operator">,</span>
m_settingsDialog<span class="operator">-</span><span class="operator">></span>settings()<span class="operator">.</span>dataBits);
modbusDevice<span class="operator">-</span><span class="operator">></span>setConnectionParameter(<span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>SerialStopBitsParameter<span class="operator">,</span>
m_settingsDialog<span class="operator">-</span><span class="operator">></span>settings()<span class="operator">.</span>stopBits);
} <span class="keyword">else</span> {
<span class="keyword">const</span> <span class="type">QUrl</span> url <span class="operator">=</span> <span class="type">QUrl</span><span class="operator">::</span>fromUserInput(ui<span class="operator">-</span><span class="operator">></span>portEdit<span class="operator">-</span><span class="operator">></span>text());
modbusDevice<span class="operator">-</span><span class="operator">></span>setConnectionParameter(<span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>NetworkPortParameter<span class="operator">,</span> url<span class="operator">.</span>port());
modbusDevice<span class="operator">-</span><span class="operator">></span>setConnectionParameter(<span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>NetworkAddressParameter<span class="operator">,</span> url<span class="operator">.</span>host());
}
modbusDevice<span class="operator">-</span><span class="operator">></span>setTimeout(m_settingsDialog<span class="operator">-</span><span class="operator">></span>settings()<span class="operator">.</span>responseTime);
modbusDevice<span class="operator">-</span><span class="operator">></span>setNumberOfRetries(m_settingsDialog<span class="operator">-</span><span class="operator">></span>settings()<span class="operator">.</span>numberOfRetries);
<span class="keyword">if</span> (<span class="operator">!</span>modbusDevice<span class="operator">-</span><span class="operator">></span>connectDevice()) {
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Connect failed: "</span>) <span class="operator">+</span> modbusDevice<span class="operator">-</span><span class="operator">></span>errorString()<span class="operator">,</span> <span class="number">5000</span>);
} <span class="keyword">else</span> {
ui<span class="operator">-</span><span class="operator">></span>actionConnect<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
ui<span class="operator">-</span><span class="operator">></span>actionDisconnect<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
}
} <span class="keyword">else</span> {
modbusDevice<span class="operator">-</span><span class="operator">></span>disconnectDevice();
ui<span class="operator">-</span><span class="operator">></span>actionConnect<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
ui<span class="operator">-</span><span class="operator">></span>actionDisconnect<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>onStateChanged(<span class="type">int</span> state)
{
bool connected <span class="operator">=</span> (state <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>UnconnectedState);
ui<span class="operator">-</span><span class="operator">></span>actionConnect<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="operator">!</span>connected);
ui<span class="operator">-</span><span class="operator">></span>actionDisconnect<span class="operator">-</span><span class="operator">></span>setEnabled(connected);
<span class="keyword">if</span> (state <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>UnconnectedState)
ui<span class="operator">-</span><span class="operator">></span>connectButton<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Connect"</span>));
<span class="keyword">else</span> <span class="keyword">if</span> (state <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>ConnectedState)
ui<span class="operator">-</span><span class="operator">></span>connectButton<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Disconnect"</span>));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>on_readButton_clicked()
{
<span class="keyword">if</span> (<span class="operator">!</span>modbusDevice)
<span class="keyword">return</span>;
ui<span class="operator">-</span><span class="operator">></span>readValue<span class="operator">-</span><span class="operator">></span>clear();
statusBar()<span class="operator">-</span><span class="operator">></span>clearMessage();
<span class="keyword">if</span> (<span class="keyword">auto</span> <span class="operator">*</span>reply <span class="operator">=</span> modbusDevice<span class="operator">-</span><span class="operator">></span>sendReadRequest(readRequest()<span class="operator">,</span> ui<span class="operator">-</span><span class="operator">></span>serverEdit<span class="operator">-</span><span class="operator">></span>value())) {
<span class="keyword">if</span> (<span class="operator">!</span>reply<span class="operator">-</span><span class="operator">></span>isFinished())
connect(reply<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmodbusreply.html">QModbusReply</a></span><span class="operator">::</span>finished<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>readReady);
<span class="keyword">else</span>
<span class="keyword">delete</span> reply; <span class="comment">// broadcast replies return immediately</span>
} <span class="keyword">else</span> {
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Read error: "</span>) <span class="operator">+</span> modbusDevice<span class="operator">-</span><span class="operator">></span>errorString()<span class="operator">,</span> <span class="number">5000</span>);
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>readReady()
{
<span class="keyword">auto</span> reply <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qmodbusreply.html">QModbusReply</a></span> <span class="operator">*</span><span class="operator">></span>(sender());
<span class="keyword">if</span> (<span class="operator">!</span>reply)
<span class="keyword">return</span>;
<span class="keyword">if</span> (reply<span class="operator">-</span><span class="operator">></span>error() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>NoError) {
<span class="keyword">const</span> <span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span> unit <span class="operator">=</span> reply<span class="operator">-</span><span class="operator">></span>result();
<span class="keyword">for</span> (<span class="type">uint</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> unit<span class="operator">.</span>valueCount(); i<span class="operator">+</span><span class="operator">+</span>) {
<span class="keyword">const</span> <span class="type">QString</span> entry <span class="operator">=</span> tr(<span class="string">"Address: %1, Value: %2"</span>)<span class="operator">.</span>arg(unit<span class="operator">.</span>startAddress() <span class="operator">+</span> i)
<span class="operator">.</span>arg(<span class="type">QString</span><span class="operator">::</span>number(unit<span class="operator">.</span>value(i)<span class="operator">,</span>
unit<span class="operator">.</span>registerType() <span class="operator"><</span><span class="operator">=</span> <span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span><span class="operator">::</span>Coils <span class="operator">?</span> <span class="number">10</span> : <span class="number">16</span>));
ui<span class="operator">-</span><span class="operator">></span>readValue<span class="operator">-</span><span class="operator">></span>addItem(entry);
}
} <span class="keyword">else</span> <span class="keyword">if</span> (reply<span class="operator">-</span><span class="operator">></span>error() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>ProtocolError) {
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Read response error: %1 (Mobus exception: 0x%2)"</span>)<span class="operator">.</span>
arg(reply<span class="operator">-</span><span class="operator">></span>errorString())<span class="operator">.</span>
arg(reply<span class="operator">-</span><span class="operator">></span>rawResult()<span class="operator">.</span>exceptionCode()<span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="number">16</span>)<span class="operator">,</span> <span class="number">5000</span>);
} <span class="keyword">else</span> {
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Read response error: %1 (code: 0x%2)"</span>)<span class="operator">.</span>
arg(reply<span class="operator">-</span><span class="operator">></span>errorString())<span class="operator">.</span>
arg(reply<span class="operator">-</span><span class="operator">></span>error()<span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="number">16</span>)<span class="operator">,</span> <span class="number">5000</span>);
}
reply<span class="operator">-</span><span class="operator">></span>deleteLater();
}
<span class="type">void</span> MainWindow<span class="operator">::</span>on_writeButton_clicked()
{
<span class="keyword">if</span> (<span class="operator">!</span>modbusDevice)
<span class="keyword">return</span>;
statusBar()<span class="operator">-</span><span class="operator">></span>clearMessage();
<span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span> writeUnit <span class="operator">=</span> writeRequest();
<span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span><span class="operator">::</span>RegisterType table <span class="operator">=</span> writeUnit<span class="operator">.</span>registerType();
<span class="keyword">for</span> (<span class="type">uint</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> writeUnit<span class="operator">.</span>valueCount(); i<span class="operator">+</span><span class="operator">+</span>) {
<span class="keyword">if</span> (table <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span><span class="operator">::</span>Coils)
writeUnit<span class="operator">.</span>setValue(i<span class="operator">,</span> writeModel<span class="operator">-</span><span class="operator">></span>m_coils<span class="operator">[</span>i <span class="operator">+</span> writeUnit<span class="operator">.</span>startAddress()<span class="operator">]</span>);
<span class="keyword">else</span>
writeUnit<span class="operator">.</span>setValue(i<span class="operator">,</span> writeModel<span class="operator">-</span><span class="operator">></span>m_holdingRegisters<span class="operator">[</span>i <span class="operator">+</span> writeUnit<span class="operator">.</span>startAddress()<span class="operator">]</span>);
}
<span class="keyword">if</span> (<span class="keyword">auto</span> <span class="operator">*</span>reply <span class="operator">=</span> modbusDevice<span class="operator">-</span><span class="operator">></span>sendWriteRequest(writeUnit<span class="operator">,</span> ui<span class="operator">-</span><span class="operator">></span>serverEdit<span class="operator">-</span><span class="operator">></span>value())) {
<span class="keyword">if</span> (<span class="operator">!</span>reply<span class="operator">-</span><span class="operator">></span>isFinished()) {
connect(reply<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmodbusreply.html">QModbusReply</a></span><span class="operator">::</span>finished<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">[</span><span class="keyword">this</span><span class="operator">,</span> reply<span class="operator">]</span>() {
<span class="keyword">if</span> (reply<span class="operator">-</span><span class="operator">></span>error() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>ProtocolError) {
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Write response error: %1 (Mobus exception: 0x%2)"</span>)
<span class="operator">.</span>arg(reply<span class="operator">-</span><span class="operator">></span>errorString())<span class="operator">.</span>arg(reply<span class="operator">-</span><span class="operator">></span>rawResult()<span class="operator">.</span>exceptionCode()<span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="number">16</span>)<span class="operator">,</span>
<span class="number">5000</span>);
} <span class="keyword">else</span> <span class="keyword">if</span> (reply<span class="operator">-</span><span class="operator">></span>error() <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qmodbusdevice.html">QModbusDevice</a></span><span class="operator">::</span>NoError) {
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Write response error: %1 (code: 0x%2)"</span>)<span class="operator">.</span>
arg(reply<span class="operator">-</span><span class="operator">></span>errorString())<span class="operator">.</span>arg(reply<span class="operator">-</span><span class="operator">></span>error()<span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="number">16</span>)<span class="operator">,</span> <span class="number">5000</span>);
}
reply<span class="operator">-</span><span class="operator">></span>deleteLater();
});
} <span class="keyword">else</span> {
<span class="comment">// broadcast replies return immediately</span>
reply<span class="operator">-</span><span class="operator">></span>deleteLater();
}
} <span class="keyword">else</span> {
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Write error: "</span>) <span class="operator">+</span> modbusDevice<span class="operator">-</span><span class="operator">></span>errorString()<span class="operator">,</span> <span class="number">5000</span>);
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>on_readWriteButton_clicked()
{
<span class="keyword">if</span> (<span class="operator">!</span>modbusDevice)
<span class="keyword">return</span>;
ui<span class="operator">-</span><span class="operator">></span>readValue<span class="operator">-</span><span class="operator">></span>clear();
statusBar()<span class="operator">-</span><span class="operator">></span>clearMessage();
<span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span> writeUnit <span class="operator">=</span> writeRequest();
<span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span><span class="operator">::</span>RegisterType table <span class="operator">=</span> writeUnit<span class="operator">.</span>registerType();
<span class="keyword">for</span> (<span class="type">uint</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> writeUnit<span class="operator">.</span>valueCount(); i<span class="operator">+</span><span class="operator">+</span>) {
<span class="keyword">if</span> (table <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span><span class="operator">::</span>Coils)
writeUnit<span class="operator">.</span>setValue(i<span class="operator">,</span> writeModel<span class="operator">-</span><span class="operator">></span>m_coils<span class="operator">[</span>i <span class="operator">+</span> writeUnit<span class="operator">.</span>startAddress()<span class="operator">]</span>);
<span class="keyword">else</span>
writeUnit<span class="operator">.</span>setValue(i<span class="operator">,</span> writeModel<span class="operator">-</span><span class="operator">></span>m_holdingRegisters<span class="operator">[</span>i <span class="operator">+</span> writeUnit<span class="operator">.</span>startAddress()<span class="operator">]</span>);
}
<span class="keyword">if</span> (<span class="keyword">auto</span> <span class="operator">*</span>reply <span class="operator">=</span> modbusDevice<span class="operator">-</span><span class="operator">></span>sendReadWriteRequest(readRequest()<span class="operator">,</span> writeUnit<span class="operator">,</span>
ui<span class="operator">-</span><span class="operator">></span>serverEdit<span class="operator">-</span><span class="operator">></span>value())) {
<span class="keyword">if</span> (<span class="operator">!</span>reply<span class="operator">-</span><span class="operator">></span>isFinished())
connect(reply<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qmodbusreply.html">QModbusReply</a></span><span class="operator">::</span>finished<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>readReady);
<span class="keyword">else</span>
<span class="keyword">delete</span> reply; <span class="comment">// broadcast replies return immediately</span>
} <span class="keyword">else</span> {
statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Read error: "</span>) <span class="operator">+</span> modbusDevice<span class="operator">-</span><span class="operator">></span>errorString()<span class="operator">,</span> <span class="number">5000</span>);
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>on_writeTable_currentIndexChanged(<span class="type">int</span> index)
{
<span class="keyword">const</span> bool coilsOrHolding <span class="operator">=</span> index <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span> <span class="operator">|</span><span class="operator">|</span> index <span class="operator">=</span><span class="operator">=</span> <span class="number">3</span>;
<span class="keyword">if</span> (coilsOrHolding) {
ui<span class="operator">-</span><span class="operator">></span>writeValueTable<span class="operator">-</span><span class="operator">></span>setColumnHidden(<span class="number">1</span><span class="operator">,</span> index <span class="operator">!</span><span class="operator">=</span> <span class="number">0</span>);
ui<span class="operator">-</span><span class="operator">></span>writeValueTable<span class="operator">-</span><span class="operator">></span>setColumnHidden(<span class="number">2</span><span class="operator">,</span> index <span class="operator">!</span><span class="operator">=</span> <span class="number">3</span>);
ui<span class="operator">-</span><span class="operator">></span>writeValueTable<span class="operator">-</span><span class="operator">></span>resizeColumnToContents(<span class="number">0</span>);
}
ui<span class="operator">-</span><span class="operator">></span>readWriteButton<span class="operator">-</span><span class="operator">></span>setEnabled(index <span class="operator">=</span><span class="operator">=</span> <span class="number">3</span>);
ui<span class="operator">-</span><span class="operator">></span>writeButton<span class="operator">-</span><span class="operator">></span>setEnabled(coilsOrHolding);
ui<span class="operator">-</span><span class="operator">></span>writeGroupBox<span class="operator">-</span><span class="operator">></span>setEnabled(coilsOrHolding);
}
<span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span> MainWindow<span class="operator">::</span>readRequest() <span class="keyword">const</span>
{
<span class="keyword">const</span> <span class="keyword">auto</span> table <span class="operator">=</span>
<span class="keyword">static_cast</span><span class="operator"><</span><span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span><span class="operator">::</span>RegisterType<span class="operator">></span> (ui<span class="operator">-</span><span class="operator">></span>writeTable<span class="operator">-</span><span class="operator">></span>currentData()<span class="operator">.</span>toInt());
<span class="type">int</span> startAddress <span class="operator">=</span> ui<span class="operator">-</span><span class="operator">></span>readAddress<span class="operator">-</span><span class="operator">></span>value();
Q_ASSERT(startAddress <span class="operator">></span><span class="operator">=</span> <span class="number">0</span> <span class="operator">&</span><span class="operator">&</span> startAddress <span class="operator"><</span> <span class="number">10</span>);
<span class="comment">// do not go beyond 10 entries</span>
<span class="type">int</span> numberOfEntries <span class="operator">=</span> qMin(ui<span class="operator">-</span><span class="operator">></span>readSize<span class="operator">-</span><span class="operator">></span>currentText()<span class="operator">.</span>toInt()<span class="operator">,</span> <span class="number">10</span> <span class="operator">-</span> startAddress);
<span class="keyword">return</span> <span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span>(table<span class="operator">,</span> startAddress<span class="operator">,</span> numberOfEntries);
}
<span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span> MainWindow<span class="operator">::</span>writeRequest() <span class="keyword">const</span>
{
<span class="keyword">const</span> <span class="keyword">auto</span> table <span class="operator">=</span>
<span class="keyword">static_cast</span><span class="operator"><</span><span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span><span class="operator">::</span>RegisterType<span class="operator">></span> (ui<span class="operator">-</span><span class="operator">></span>writeTable<span class="operator">-</span><span class="operator">></span>currentData()<span class="operator">.</span>toInt());
<span class="type">int</span> startAddress <span class="operator">=</span> ui<span class="operator">-</span><span class="operator">></span>writeAddress<span class="operator">-</span><span class="operator">></span>value();
Q_ASSERT(startAddress <span class="operator">></span><span class="operator">=</span> <span class="number">0</span> <span class="operator">&</span><span class="operator">&</span> startAddress <span class="operator"><</span> <span class="number">10</span>);
<span class="comment">// do not go beyond 10 entries</span>
<span class="type">int</span> numberOfEntries <span class="operator">=</span> qMin(ui<span class="operator">-</span><span class="operator">></span>writeSize<span class="operator">-</span><span class="operator">></span>currentText()<span class="operator">.</span>toInt()<span class="operator">,</span> <span class="number">10</span> <span class="operator">-</span> startAddress);
<span class="keyword">return</span> <span class="type"><a href="qmodbusdataunit.html">QModbusDataUnit</a></span>(table<span class="operator">,</span> startAddress<span class="operator">,</span> numberOfEntries);
}
</pre>
</div>
<!-- @@@modbus/master/mainwindow.cpp -->
</div>
</div>
</div>
</div>
</div>
<div class="footer">
<p>
<acronym title="Copyright">©</acronym> 2017 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>
distrib
>
Mageia
>
6
>
x86_64
>
media
>
core-updates
>
by-pkgid
>
3214e0cac2e902da44e71b50fa86ebb6
>
files
>
101
