| /**************************************************************************** |
| ** |
| ** 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 |
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| ****************************************************************************/ |
| |
| #include "mainwindow.h" |
| #include "ui_mainwindow.h" |
| #include "connectdialog.h" |
| |
| #include <QCanBus> |
| #include <QCanBusFrame> |
| #include <QCloseEvent> |
| #include <QDesktopServices> |
| #include <QTimer> |
| |
| MainWindow::MainWindow(QWidget *parent) : |
| QMainWindow(parent), |
| m_ui(new Ui::MainWindow), |
| m_busStatusTimer(new QTimer(this)) |
| { |
| m_ui->setupUi(this); |
| |
| m_connectDialog = new ConnectDialog; |
| |
| m_status = new QLabel; |
| m_ui->statusBar->addPermanentWidget(m_status); |
| |
| m_written = new QLabel; |
| m_ui->statusBar->addWidget(m_written); |
| |
| initActionsConnections(); |
| QTimer::singleShot(50, m_connectDialog, &ConnectDialog::show); |
| |
| connect(m_busStatusTimer, &QTimer::timeout, this, &MainWindow::busStatus); |
| } |
| |
| MainWindow::~MainWindow() |
| { |
| delete m_connectDialog; |
| delete m_ui; |
| } |
| |
| void MainWindow::initActionsConnections() |
| { |
| m_ui->actionDisconnect->setEnabled(false); |
| m_ui->sendFrameBox->setEnabled(false); |
| |
| connect(m_ui->sendFrameBox, &SendFrameBox::sendFrame, this, &MainWindow::sendFrame); |
| connect(m_ui->actionConnect, &QAction::triggered, [this]() { |
| m_canDevice.release()->deleteLater(); |
| m_connectDialog->show(); |
| }); |
| connect(m_connectDialog, &QDialog::accepted, this, &MainWindow::connectDevice); |
| connect(m_ui->actionDisconnect, &QAction::triggered, this, &MainWindow::disconnectDevice); |
| connect(m_ui->actionResetController, &QAction::triggered, this, [this]() { |
| m_canDevice->resetController(); |
| }); |
| connect(m_ui->actionQuit, &QAction::triggered, this, &QWidget::close); |
| connect(m_ui->actionAboutQt, &QAction::triggered, qApp, &QApplication::aboutQt); |
| connect(m_ui->actionClearLog, &QAction::triggered, m_ui->receivedMessagesEdit, &QTextEdit::clear); |
| connect(m_ui->actionPluginDocumentation, &QAction::triggered, this, []() { |
| QDesktopServices::openUrl(QUrl("http://doc.qt.io/qt-5/qtcanbus-backends.html#can-bus-plugins")); |
| }); |
| } |
| |
| void MainWindow::processErrors(QCanBusDevice::CanBusError error) const |
| { |
| switch (error) { |
| case QCanBusDevice::ReadError: |
| case QCanBusDevice::WriteError: |
| case QCanBusDevice::ConnectionError: |
| case QCanBusDevice::ConfigurationError: |
| case QCanBusDevice::UnknownError: |
| m_status->setText(m_canDevice->errorString()); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| void MainWindow::connectDevice() |
| { |
| const ConnectDialog::Settings p = m_connectDialog->settings(); |
| |
| QString errorString; |
| m_canDevice.reset(QCanBus::instance()->createDevice(p.pluginName, p.deviceInterfaceName, |
| &errorString)); |
| if (!m_canDevice) { |
| m_status->setText(tr("Error creating device '%1', reason: '%2'") |
| .arg(p.pluginName).arg(errorString)); |
| return; |
| } |
| |
| m_numberFramesWritten = 0; |
| |
| connect(m_canDevice.get(), &QCanBusDevice::errorOccurred, |
| this, &MainWindow::processErrors); |
| connect(m_canDevice.get(), &QCanBusDevice::framesReceived, |
| this, &MainWindow::processReceivedFrames); |
| connect(m_canDevice.get(), &QCanBusDevice::framesWritten, |
| this, &MainWindow::processFramesWritten); |
| |
| if (p.useConfigurationEnabled) { |
| for (const ConnectDialog::ConfigurationItem &item : p.configurations) |
| m_canDevice->setConfigurationParameter(item.first, item.second); |
| } |
| |
| if (!m_canDevice->connectDevice()) { |
| m_status->setText(tr("Connection error: %1").arg(m_canDevice->errorString())); |
| |
| m_canDevice.reset(); |
| } else { |
| m_ui->actionConnect->setEnabled(false); |
| m_ui->actionDisconnect->setEnabled(true); |
| |
| m_ui->sendFrameBox->setEnabled(true); |
| |
| const QVariant bitRate = m_canDevice->configurationParameter(QCanBusDevice::BitRateKey); |
| if (bitRate.isValid()) { |
| const bool isCanFd = |
| m_canDevice->configurationParameter(QCanBusDevice::CanFdKey).toBool(); |
| const QVariant dataBitRate = |
| m_canDevice->configurationParameter(QCanBusDevice::DataBitRateKey); |
| if (isCanFd && dataBitRate.isValid()) { |
| m_status->setText(tr("Plugin: %1, connected to %2 at %3 / %4 kBit/s") |
| .arg(p.pluginName).arg(p.deviceInterfaceName) |
| .arg(bitRate.toInt() / 1000).arg(dataBitRate.toInt() / 1000)); |
| } else { |
| m_status->setText(tr("Plugin: %1, connected to %2 at %3 kBit/s") |
| .arg(p.pluginName).arg(p.deviceInterfaceName) |
| .arg(bitRate.toInt() / 1000)); |
| } |
| } else { |
| m_status->setText(tr("Plugin: %1, connected to %2") |
| .arg(p.pluginName).arg(p.deviceInterfaceName)); |
| } |
| |
| if (m_canDevice->hasBusStatus()) |
| m_busStatusTimer->start(2000); |
| else |
| m_ui->busStatus->setText(tr("No CAN bus status available.")); |
| } |
| } |
| |
| void MainWindow::busStatus() |
| { |
| if (!m_canDevice || !m_canDevice->hasBusStatus()) { |
| m_ui->busStatus->setText(tr("No CAN bus status available.")); |
| m_busStatusTimer->stop(); |
| return; |
| } |
| |
| switch (m_canDevice->busStatus()) { |
| case QCanBusDevice::CanBusStatus::Good: |
| m_ui->busStatus->setText("CAN bus status: Good."); |
| break; |
| case QCanBusDevice::CanBusStatus::Warning: |
| m_ui->busStatus->setText("CAN bus status: Warning."); |
| break; |
| case QCanBusDevice::CanBusStatus::Error: |
| m_ui->busStatus->setText("CAN bus status: Error."); |
| break; |
| case QCanBusDevice::CanBusStatus::BusOff: |
| m_ui->busStatus->setText("CAN bus status: Bus Off."); |
| break; |
| default: |
| m_ui->busStatus->setText("CAN bus status: Unknown."); |
| break; |
| } |
| } |
| |
| void MainWindow::disconnectDevice() |
| { |
| if (!m_canDevice) |
| return; |
| |
| m_busStatusTimer->stop(); |
| |
| m_canDevice->disconnectDevice(); |
| |
| m_ui->actionConnect->setEnabled(true); |
| m_ui->actionDisconnect->setEnabled(false); |
| |
| m_ui->sendFrameBox->setEnabled(false); |
| |
| m_status->setText(tr("Disconnected")); |
| } |
| |
| void MainWindow::processFramesWritten(qint64 count) |
| { |
| m_numberFramesWritten += count; |
| m_written->setText(tr("%1 frames written").arg(m_numberFramesWritten)); |
| } |
| |
| void MainWindow::closeEvent(QCloseEvent *event) |
| { |
| m_connectDialog->close(); |
| event->accept(); |
| } |
| |
| static QString frameFlags(const QCanBusFrame &frame) |
| { |
| QString result = QLatin1String(" --- "); |
| |
| if (frame.hasBitrateSwitch()) |
| result[1] = QLatin1Char('B'); |
| if (frame.hasErrorStateIndicator()) |
| result[2] = QLatin1Char('E'); |
| if (frame.hasLocalEcho()) |
| result[3] = QLatin1Char('L'); |
| |
| return result; |
| } |
| |
| void MainWindow::processReceivedFrames() |
| { |
| if (!m_canDevice) |
| return; |
| |
| while (m_canDevice->framesAvailable()) { |
| const QCanBusFrame frame = m_canDevice->readFrame(); |
| |
| QString view; |
| if (frame.frameType() == QCanBusFrame::ErrorFrame) |
| view = m_canDevice->interpretErrorFrame(frame); |
| else |
| view = frame.toString(); |
| |
| const QString time = QString::fromLatin1("%1.%2 ") |
| .arg(frame.timeStamp().seconds(), 10, 10, QLatin1Char(' ')) |
| .arg(frame.timeStamp().microSeconds() / 100, 4, 10, QLatin1Char('0')); |
| |
| const QString flags = frameFlags(frame); |
| |
| m_ui->receivedMessagesEdit->append(time + flags + view); |
| } |
| } |
| |
| void MainWindow::sendFrame(const QCanBusFrame &frame) const |
| { |
| if (!m_canDevice) |
| return; |
| |
| m_canDevice->writeFrame(frame); |
| } |