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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 "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, []() {
});
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));
}
}