Revision control
++ // Copyright (C) 2017 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "mainwindow.h"
++ #include "ui_mainwindow.h"
++ #include "canbusdeviceinfodialog.h"
++ #include "connectdialog.h"
++ #include "receivedframesmodel.h"
++
++ #include <QCanBus>
++ #include <QCanBusFrame>
++ #include <QCloseEvent>
++ #include <QDateTime>
++ #include <QDesktopServices>
++ #include <QLabel>
++ #include <QTimer>
++
++ using namespace Qt::StringLiterals;
++
++ 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);
++
++ m_received = new QLabel;
++ m_ui->statusBar->addWidget(m_received);
++
++ m_model = new ReceivedFramesModel(this);
++ m_model->setQueueLimit(1000);
++ m_ui->receivedFramesView->setModel(m_model);
++
++ initActionsConnections();
++ QTimer::singleShot(50, m_connectDialog, &ConnectDialog::show);
++
++ connect(m_busStatusTimer, &QTimer::timeout, this, &MainWindow::busStatus);
++ m_appendTimer = new QTimer(this);
++ connect(m_appendTimer, &QTimer::timeout, this, &MainWindow::onAppendFramesTimeout);
++ m_appendTimer->start(350);
++ }
++
++ MainWindow::~MainWindow()
++ {
++ delete m_connectDialog;
++ delete m_ui;
++ }
++
++ void MainWindow::initActionsConnections()
++ {
++ m_ui->actionDisconnect->setEnabled(false);
++ m_ui->actionDeviceInformation->setEnabled(false);
++ m_ui->sendFrameBox->setEnabled(false);
++
++ connect(m_ui->sendFrameBox, &SendFrameBox::sendFrame, this, &MainWindow::sendFrame);
++ connect(m_ui->actionConnect, &QAction::triggered, this, [this]() {
++ if (m_canDevice)
++ 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_model, &ReceivedFramesModel::clear);
++ connect(m_ui->actionPluginDocumentation, &QAction::triggered, this, []() {
++ QDesktopServices::openUrl(QUrl("http://doc.qt.io/qt-6/qtcanbus-backends.html#can-bus-plugins"));
++ });
++ connect(m_ui->actionDeviceInformation, &QAction::triggered, this, [this]() {
++ auto info = m_canDevice->deviceInfo();
++ CanBusDeviceInfoDialog dialog(info, this);
++ dialog.exec();
++ });
++ }
++
++ void MainWindow::processErrors(QCanBusDevice::CanBusError error) const
++ {
++ switch (error) {
++ case QCanBusDevice::ReadError:
++ case QCanBusDevice::ReceiveQueueOverflowError:
++ 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();
++
++ if (p.useModelRingBuffer)
++ m_model->setQueueLimit(p.modelRingBufferSize);
++ else
++ m_model->setQueueLimit(0);
++
++ //! [create_can_device_0]
++ QString errorString;
++ m_canDevice.reset(QCanBus::instance()->createDevice(p.pluginName, p.deviceInterfaceName,
++ &errorString));
++ //! [create_can_device_0]
++ if (!m_canDevice) {
++ m_status->setText(tr("Error creating device '%1', reason: '%2'")
++ .arg(p.pluginName, errorString));
++ return;
++ }
++
++ m_numberFramesWritten = 0;
++
++ //! [create_can_device_1]
++ 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);
++ //! [create_can_device_1]
++
++ 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->actionDeviceInformation->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, 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, p.deviceInterfaceName)
++ .arg(bitRate.toInt() / 1000));
++ }
++ } else {
++ m_status->setText(tr("Plugin: %1, connected to %2")
++ .arg(p.pluginName, 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->actionDeviceInformation->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 = u" --- "_s;
++
++ if (frame.hasBitrateSwitch())
++ result[1] = u'B';
++ if (frame.hasErrorStateIndicator())
++ result[2] = u'E';
++ if (frame.hasLocalEcho())
++ result[3] = u'L';
++
++ return result;
++ }
++
++ void MainWindow::processReceivedFrames()
++ {
++ if (!m_canDevice)
++ return;
++
++ //! [receive_can_frame]
++ while (m_canDevice->framesAvailable()) {
++ m_numberFramesReceived++;
++ const QCanBusFrame frame = m_canDevice->readFrame();
++
++ QString data;
++ if (frame.frameType() == QCanBusFrame::ErrorFrame)
++ data = m_canDevice->interpretErrorFrame(frame);
++ else
++ data = QString::fromLatin1(frame.payload().toHex(' ').toUpper());
++
++ const QString time = QString::fromLatin1("%1.%2 ")
++ .arg(frame.timeStamp().seconds(), 10, 10, ' '_L1)
++ .arg(frame.timeStamp().microSeconds() / 100, 4, 10, '0'_L1);
++
++ const QString flags = frameFlags(frame);
++
++ const QString id = QString::number(frame.frameId(), 16).toUpper();
++ const QString dlc = QString::number(frame.payload().size());
++
++ m_model->appendFrame(QStringList({QString::number(m_numberFramesReceived),
++ time, flags, id, dlc, data}));
++ }
++ //! [receive_can_frame]
++ }
++
++ void MainWindow::sendFrame(const QCanBusFrame &frame) const
++ {
++ if (!m_canDevice)
++ return;
++
++ //! [send_can_frame]
++ m_canDevice->writeFrame(frame);
++ //! [send_can_frame]
++ }
++
++ void MainWindow::onAppendFramesTimeout()
++ {
++ if (!m_canDevice)
++ return;
++
++ if (m_model->needUpdate()) {
++ m_model->update();
++ if (m_connectDialog->settings().useAutoscroll)
++ m_ui->receivedFramesView->scrollToBottom();
++ m_received->setText(tr("%1 frames received").arg(m_numberFramesReceived));
++ }
++ }