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Diffstat (limited to 'examples/serialport/sender/dialog.cpp')
| -rw-r--r-- | examples/serialport/sender/dialog.cpp | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/examples/serialport/sender/dialog.cpp b/examples/serialport/sender/dialog.cpp new file mode 100644 index 0000000..d7f5c29 --- /dev/null +++ b/examples/serialport/sender/dialog.cpp @@ -0,0 +1,154 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Denis Shienkov <denis.shienkov@gmail.com> +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtSerialPort 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "dialog.h" + +#include <QComboBox> +#include <QGridLayout> +#include <QLabel> +#include <QLineEdit> +#include <QPushButton> +#include <QSerialPortInfo> +#include <QSpinBox> + +Dialog::Dialog(QWidget *parent) : + QDialog(parent), + m_transactionCount(0), + m_serialPortLabel(new QLabel(tr("Serial port:"))), + m_serialPortComboBox(new QComboBox), + m_waitResponseLabel(new QLabel(tr("Wait response, msec:"))), + m_waitResponseSpinBox(new QSpinBox), + m_requestLabel(new QLabel(tr("Request:"))), + m_requestLineEdit(new QLineEdit(tr("Who are you?"))), + m_trafficLabel(new QLabel(tr("No traffic."))), + m_statusLabel(new QLabel(tr("Status: Not running."))), + m_runButton(new QPushButton(tr("Start"))) +{ + const auto infos = QSerialPortInfo::availablePorts(); + for (const QSerialPortInfo &info : infos) + m_serialPortComboBox->addItem(info.portName()); + + m_waitResponseSpinBox->setRange(0, 10000); + m_waitResponseSpinBox->setValue(100); + + auto mainLayout = new QGridLayout; + mainLayout->addWidget(m_serialPortLabel, 0, 0); + mainLayout->addWidget(m_serialPortComboBox, 0, 1); + mainLayout->addWidget(m_waitResponseLabel, 1, 0); + mainLayout->addWidget(m_waitResponseSpinBox, 1, 1); + mainLayout->addWidget(m_runButton, 0, 2, 2, 1); + mainLayout->addWidget(m_requestLabel, 2, 0); + mainLayout->addWidget(m_requestLineEdit, 2, 1, 1, 3); + mainLayout->addWidget(m_trafficLabel, 3, 0, 1, 4); + mainLayout->addWidget(m_statusLabel, 4, 0, 1, 5); + setLayout(mainLayout); + + setWindowTitle(tr("Sender")); + m_serialPortComboBox->setFocus(); + + m_timer.setSingleShot(true); + + connect(m_runButton, &QPushButton::clicked, this, &Dialog::sendRequest); + connect(&m_serial, &QSerialPort::readyRead, this, &Dialog::readResponse); + connect(&m_timer, &QTimer::timeout, this, &Dialog::processTimeout); +} + +void Dialog::sendRequest() +{ + if (m_serial.portName() != m_serialPortComboBox->currentText()) { + m_serial.close(); + m_serial.setPortName(m_serialPortComboBox->currentText()); + + if (!m_serial.open(QIODevice::ReadWrite)) { + processError(tr("Can't open %1, error code %2") + .arg(m_serial.portName()).arg(m_serial.error())); + return; + } + } + + setControlsEnabled(false); + m_statusLabel->setText(tr("Status: Running, connected to port %1.") + .arg(m_serialPortComboBox->currentText())); + + m_serial.write(m_requestLineEdit->text().toUtf8()); + m_timer.start(m_waitResponseSpinBox->value()); +} + +void Dialog::readResponse() +{ + m_response.append(m_serial.readAll()); +} + +void Dialog::processTimeout() +{ + setControlsEnabled(true); + m_trafficLabel->setText(tr("Traffic, transaction #%1:" + "\n\r-request: %2" + "\n\r-response: %3") + .arg(++m_transactionCount) + .arg(m_requestLineEdit->text()) + .arg(QString::fromUtf8(m_response))); + m_response.clear(); +} + +void Dialog::processError(const QString &error) +{ + setControlsEnabled(true); + m_statusLabel->setText(tr("Status: Not running, %1.").arg(error)); + m_trafficLabel->setText(tr("No traffic.")); +} + +void Dialog::setControlsEnabled(bool enable) +{ + m_runButton->setEnabled(enable); + m_serialPortComboBox->setEnabled(enable); + m_waitResponseSpinBox->setEnabled(enable); + m_requestLineEdit->setEnabled(enable); +} |