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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "mainwindow.h"
#include "modbustcpclient.h"
#include <QLoggingCategory>
#include <QModbusPdu>
#include <QModbusRtuSerialClient>
#include <QSerialPortInfo>
#ifndef QT_STATIC
QT_BEGIN_NAMESPACE
Q_LOGGING_CATEGORY(QT_MODBUS, "qt.modbus")
Q_LOGGING_CATEGORY(QT_MODBUS_LOW, "qt.modbus.lowlevel")
QT_END_NAMESPACE
#endif
QT_USE_NAMESPACE
MainWindow *s_instance = nullptr;
static void HandlerFunction(QtMsgType, const QMessageLogContext &, const QString &msg)
{
if (auto instance = MainWindow::instance())
instance->appendToLog(msg);
}
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, m_debugHandler(HandlerFunction)
{
setupUi(this);
s_instance = this;
const auto ports = QSerialPortInfo::availablePorts();
for (const QSerialPortInfo &info : ports)
serialPortCombo->addItem(info.portName(), false);
serialPortCombo->insertSeparator(serialPortCombo->count());
serialPortCombo->addItem(tr("Add port..."), true);
serialPortCombo->setInsertPolicy(QComboBox::InsertAtTop);
connect(tcpRadio, &QRadioButton::toggled, this, [this](bool toggled) {
stackedWidget->setCurrentIndex(toggled);
});
connect(actionExit, &QAction::triggered, this, &QMainWindow::close);
QLoggingCategory::setFilterRules(QStringLiteral("qt.modbus* = true"));
}
MainWindow::~MainWindow()
{
disconnectAndDelete();
s_instance = nullptr;
}
MainWindow *MainWindow::instance()
{
return s_instance;
}
void MainWindow::on_sendButton_clicked()
{
const bool isSerial = serialRadio->isChecked();
const bool isCustom = (isSerial ? fcSerialDrop : fcTcpDrop)->currentIndex() == 0;
const QByteArray pduData = QByteArray::fromHex((isSerial ? pduSerialLine : pduTcpLine)->text()
.toLatin1());
QModbusReply *reply = nullptr;
if (isCustom && pduData.isEmpty()) {
qDebug() << "Error: Cannot send custom PDU without any data.";
return;
}
const quint8 address = quint8((isSerial ? addressSpin : ui1Spin)->value());
if (isCustom) {
qDebug() << "Send: Sending custom PDU.";
reply = m_device->sendRawRequest(QModbusRequest(QModbusRequest::FunctionCode(
pduData[0]), pduData.mid(1)), address);
} else {
qDebug() << "Send: Sending PDU with predefined function code.";
quint16 fc = (isSerial ? fcSerialDrop : fcTcpDrop)->currentText().left(4).toUShort(0, 16);
reply = m_device->sendRawRequest(QModbusRequest(QModbusRequest::FunctionCode(fc), pduData),
address);
}
if (reply) {
sendButton->setDisabled(true);
if (!reply->isFinished()) {
connect(reply, &QModbusReply::finished, [reply, this]() {
sendButton->setEnabled(true);
qDebug() << "Receive: Asynchronous response PDU: " << reply->rawResult() << Qt::endl;
});
} else {
sendButton->setEnabled(true);
qDebug() << "Receive: Synchronous response pdu: " << reply->rawResult() << Qt::endl;
}
}
}
void MainWindow::on_connectButton_clicked()
{
if (tcpRadio->isChecked()) {
auto device = new ModbusTcpClient;
connect(ti1Spin, &QSpinBox::valueChanged,
device, &ModbusTcpClient::valueChanged);
connect(ti2Spin, &QSpinBox::valueChanged,
device, &ModbusTcpClient::valueChanged);
connect(pi1Spin, &QSpinBox::valueChanged,
device, &ModbusTcpClient::valueChanged);
connect(pi2Spin, &QSpinBox::valueChanged,
device, &ModbusTcpClient::valueChanged);
connect(l1Spin, &QSpinBox::valueChanged,
device, &ModbusTcpClient::valueChanged);
connect(l2Spin, &QSpinBox::valueChanged,
device, &ModbusTcpClient::valueChanged);
connect(ui1Spin, &QSpinBox::valueChanged,
device, &ModbusTcpClient::valueChanged);
m_device = device;
device->valueChanged(0); // trigger update
m_device->setConnectionParameter(QModbusDevice::NetworkAddressParameter,
tcpAddressEdit->text());
m_device->setConnectionParameter(QModbusDevice::NetworkPortParameter,
tcpPortEdit->text());
} else {
m_device = new QModbusRtuSerialClient;
m_device->setConnectionParameter(QModbusDevice::SerialPortNameParameter,
serialPortCombo->currentText());
int parity = parityCombo->currentIndex();
if (parity > 0)
parity++;
m_device->setConnectionParameter(QModbusDevice::SerialParityParameter, parity);
m_device->setConnectionParameter(QModbusDevice::SerialDataBitsParameter,
dataBitsCombo->currentText().toInt());
m_device->setConnectionParameter(QModbusDevice::SerialStopBitsParameter,
stopBitsCombo->currentText().toInt());
m_device->setConnectionParameter(QModbusDevice::SerialBaudRateParameter,
baudRateCombo->currentText().toInt());
}
m_device->setTimeout(timeoutSpin->value());
m_device->setNumberOfRetries(retriesSpin->value());
connect(m_device, &QModbusDevice::errorOccurred, this, [this](QModbusDevice::Error) {
qDebug().noquote() << QStringLiteral("Error: %1").arg(m_device->errorString());
emit disconnectButton->clicked();
}, Qt::QueuedConnection);
connect(m_device, &QModbusDevice::stateChanged, [](QModbusDevice::State state) {
switch (state) {
case QModbusDevice::UnconnectedState:
qDebug().noquote() << QStringLiteral("State: Entered unconnected state.");
break;
case QModbusDevice::ConnectingState:
qDebug().noquote() << QStringLiteral("State: Entered connecting state.");
break;
case QModbusDevice::ConnectedState:
qDebug().noquote() << QStringLiteral("State: Entered connected state.");
break;
case QModbusDevice::ClosingState:
qDebug().noquote() << QStringLiteral("State: Entered closing state.");
break;
}
});
m_device->connectDevice();
}
void MainWindow::on_disconnectButton_clicked()
{
disconnectAndDelete();
}
void MainWindow::on_serialPortCombo_currentIndexChanged(int index)
{
const bool custom = serialPortCombo->itemData(index, Qt::UserRole).toBool();
serialPortCombo->setEditable(custom);
if (custom) {
serialPortCombo->clearEditText();
serialPortCombo->lineEdit()->setPlaceholderText(QStringLiteral("Type here..."));
}
}
void MainWindow::disconnectAndDelete()
{
if (!m_device)
return;
m_device->disconnectDevice();
m_device->disconnect();
delete m_device;
m_device = nullptr;
}
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