tempo-plotter Changeset - 73abbe942246 · protofusion repositories

Changeset - 73abbe942246

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Hasan Yavuz ÖZDERYA - 11 years ago 2015-03-16 18:27:43
hy@ozderya.net

discard all received data when paused

1 file changed with 4 insertions and 0 deletions:

mainwindow.cpp

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mainwindow.cpp

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@@ @@ -41,354 +41,358 @@ MainWindow::MainWindow(QWidget *parent) @@
     QObject::connect(ui->spYmax, SIGNAL(valueChanged(double)),
                      this, SLOT(onYScaleChanged()));
     QObject::connect(ui->actionClear, SIGNAL(triggered(bool)),
                      this, SLOT(clearPlot()));
     // setup number format buttons
     numberFormatButtons.addButton(ui->rbUint8,  NumberFormat_uint8);
     numberFormatButtons.addButton(ui->rbUint16, NumberFormat_uint16);
     numberFormatButtons.addButton(ui->rbUint32, NumberFormat_uint32);
     numberFormatButtons.addButton(ui->rbInt8,   NumberFormat_int8);
     numberFormatButtons.addButton(ui->rbInt16,  NumberFormat_int16);
     numberFormatButtons.addButton(ui->rbInt32,  NumberFormat_int32);
     QObject::connect(&numberFormatButtons, SIGNAL(buttonToggled(int, bool)),
                      this, SLOT(onNumberFormatButtonToggled(int, bool)));
     // init port signals
     QObject::connect(&(this->serialPort), SIGNAL(error(QSerialPort::SerialPortError)),
                      this, SLOT(onPortError(QSerialPort::SerialPortError)));
     QObject::connect(&(this->serialPort), &QSerialPort::readyRead,
                      this, &MainWindow::onDataReady);
     loadPortList();
     loadBaudRateList();
     ui->cbBaudRate->setCurrentIndex(ui->cbBaudRate->findText("9600"));
     // set limits for axis limit boxes
     ui->spYmin->setRange((-1) * std::numeric_limits<double>::max(),
                          std::numeric_limits<double>::max());
     ui->spYmax->setRange((-1) * std::numeric_limits<double>::max(),
                          std::numeric_limits<double>::max());
     // init plot
     numOfSamples = ui->spNumOfSamples->value();
     dataArray.resize(numOfSamples);
     dataX.resize(numOfSamples);
     for (int i = 0; i < dataX.size(); i++)
+    {
         dataX[i] = i;
+    }
     curve.setSamples(dataX, dataArray);
     curve.attach(ui->plot);
     // init number format
     if (numberFormatButtons.checkedId() >= 0)
+    {
         selectNumberFormat((NumberFormat) numberFormatButtons.checkedId());
+    }
     else
+    {
         selectNumberFormat(NumberFormat_uint8);
+    }
+}
 MainWindow::~MainWindow()
+{
     if (serialPort.isOpen())
+    {
         serialPort.close();
+    }
     delete ui;
+}
 void MainWindow::loadPortList()
+{
     QString currentSelection = ui->cbPortList->currentText();
     ui->cbPortList->clear();
     for (auto port : QSerialPortInfo::availablePorts())
+    {
         ui->cbPortList->addItem(port.portName());
+    }
     // find current selection in the new list, maybe it doesn't exist anymore?
     int currentSelectionIndex = ui->cbPortList->findText(currentSelection);
     if (currentSelectionIndex >= 0)
+    {
         ui->cbPortList->setCurrentIndex(currentSelectionIndex);
+    }
     else // our port doesn't exist anymore, close port if it's open
+    {
         if (serialPort.isOpen()) togglePort();
+    }
+}
 void MainWindow::loadBaudRateList()
+{
     ui->cbBaudRate->clear();
     for (auto baudRate : QSerialPortInfo::standardBaudRates())
+    {
         ui->cbBaudRate->addItem(QString::number(baudRate));
+    }
+}
 void MainWindow::togglePort()
+{
     if (serialPort.isOpen())
+    {
         serialPort.close();
         qDebug() << "Port closed, " << serialPort.portName();
         emit portToggled(false);
+    }
     else
+    {
         serialPort.setPortName(ui->cbPortList->currentText());
         // open port
         if (serialPort.open(QIODevice::ReadWrite))
+        {
             qDebug() << "Port opened, " << serialPort.portName();
             emit portToggled(true);
             // set baud rate
             if (!serialPort.setBaudRate(ui->cbBaudRate->currentText().toInt()))
+            {
                 qDebug() << "Set baud rate failed during port opening: "
                          << serialPort.error();
+            }
+        }
         else
+        {
             qDebug() << "Port open error: " << serialPort.error();
+        }
+    }
+}
 void MainWindow::selectPort(QString portName)
+{
     // has selection actually changed
     if (portName != serialPort.portName())
+    {
         // if another port is already open, close it by toggling
         if (serialPort.isOpen())
+        {
             togglePort();
             // open new selection by toggling
             togglePort();
+        }
+    }
+}
 void MainWindow::selectBaudRate(QString baudRate)
+{
     if (serialPort.isOpen())
+    {
         if (!serialPort.setBaudRate(baudRate.toInt()))
+        {
             qDebug() << "Set baud rate failed during select: "
                      << serialPort.error();
+        }
         else
+        {
             qDebug() << "Baud rate changed: " << serialPort.baudRate();
+        }
+    }
+}
 void MainWindow::onPortToggled(bool open)
+{
     ui->pbOpenPort->setChecked(open);
+}
 void MainWindow::onDataReady()
+{
     if (!ui->actionPause->isChecked())
+    {
         int bytesAvailable = serialPort.bytesAvailable();
         if (bytesAvailable < sampleSize)
+        {
             return;
+        }
         else
+        {
             int numOfSamplesToRead =
                 (bytesAvailable - (bytesAvailable % sampleSize)) / sampleSize;
             QVector<double> samples(numOfSamplesToRead);
             int i = 0;
             while(i < numOfSamplesToRead)
+            {
                 samples.replace(i, (this->*readSample)());
                 i++;
+            }
             addData(samples);
+        }
+    }
     else
+    {
         serialPort.clear(QSerialPort::Input);
+    }
+}
 void MainWindow::onPortError(QSerialPort::SerialPortError error)
+{
     switch(error)
+    {
         case QSerialPort::NoError :
             break;
         case QSerialPort::ResourceError :
             qDebug() << "Port error: resource unavaliable; most likely device removed.";
             if (serialPort.isOpen())
+            {
                 qDebug() << "Closing port on resource error: " << serialPort.portName();
                 togglePort();
+            }
             loadPortList();
             break;
         default:
             qDebug() << "Unhandled port error: " << error;
             break;
+    }
+}
 void MainWindow::addData(QVector<double> data)
+{
     int offset = numOfSamples - data.size();
     if (offset < 0)
+    {
         for (int i = 0; i < numOfSamples; i++)
+        {
             dataArray[i] = data[i - offset];
+        }
+    }
     else if (offset == 0)
+    {
         dataArray = data;
+    }
     else
+    {
         // shift old samples
         int shift = data.size();
         for (int i = 0; i < offset; i++)
+        {
             dataArray[i] = dataArray[i + shift];
+        }
         // place new samples
         for (int i = 0; i < data.size(); i++)
+        {
             dataArray[offset + i] = data[i];
+        }
+    }
     // update plot
     curve.setSamples(dataX, dataArray);
     ui->plot->replot();
+}
 void MainWindow::clearPlot()
+{
     dataArray.fill(0.0);
     // update plot
     curve.setSamples(dataX, dataArray);
     ui->plot->replot();
+}
 void MainWindow::onNumOfSamplesChanged(int value)
+{
     unsigned int oldNum = this->numOfSamples;
     numOfSamples = value;
     // resize data arrays
     if (numOfSamples < oldNum)
+    {
         dataX.resize(numOfSamples);
         dataArray.remove(0, oldNum - numOfSamples);
+    }
     else if(numOfSamples > oldNum)
+    {
         dataX.resize(numOfSamples);
         for (unsigned int i = oldNum; i < numOfSamples; i++)
+        {
             dataX[i] = i;
             dataArray.prepend(0);
+        }
+    }
+}
 void MainWindow::onAutoScaleChecked(bool checked)
+{
     if (checked)
+    {
         ui->plot->setAxisAutoScale(QwtPlot::yLeft);
         ui->lYmin->setEnabled(false);
         ui->lYmax->setEnabled(false);
         ui->spYmin->setEnabled(false);
         ui->spYmax->setEnabled(false);
+    }
     else
+    {
         ui->lYmin->setEnabled(true);
         ui->lYmax->setEnabled(true);
         ui->spYmin->setEnabled(true);
         ui->spYmax->setEnabled(true);
         ui->plot->setAxisScale(QwtPlot::yLeft, ui->spYmin->value(),
                                ui->spYmax->value());
+    }
+}
 void MainWindow::onYScaleChanged()
+{
     ui->plot->setAxisScale(QwtPlot::yLeft, ui->spYmin->value(),
                            ui->spYmax->value());
+}
 void MainWindow::onNumberFormatButtonToggled(int numberFormatId, bool checked)
+{
     if (checked) selectNumberFormat((NumberFormat) numberFormatId);
+}
 void MainWindow::selectNumberFormat(NumberFormat numberFormatId)
+{
     numberFormat = numberFormatId;
     switch(numberFormat)
+    {
         case NumberFormat_uint8:
             sampleSize = 1;
             readSample = &MainWindow::readSampleAs<quint8>;
             break;
         case NumberFormat_int8:
             sampleSize = 1;
             readSample = &MainWindow::readSampleAs<qint8>;
             break;
         case NumberFormat_uint16:
             sampleSize = 2;
             readSample = &MainWindow::readSampleAs<quint16>;
             break;
         case NumberFormat_int16:
             sampleSize = 2;
             readSample = &MainWindow::readSampleAs<qint16>;
             break;
         case NumberFormat_uint32:
             sampleSize = 4;
             readSample = &MainWindow::readSampleAs<quint32>;
             break;
         case NumberFormat_int32:
             sampleSize = 4;
             readSample = &MainWindow::readSampleAs<qint32>;
             break;
+    }
+}
 template<typename T> double MainWindow::readSampleAs()
+{
     T data;
     this->serialPort.read((char*) &data, sizeof(data));
     return double(data);
+}

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