void MainWindow::onPortToggled(bool open)

{

    ui->pbOpenPort->setChecked(open);

}

void MainWindow::onDataReady()

{

    QByteArray data = serialPort.readAll();

    addData((unsigned char)(data[0]));

}

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();

            }

            break;

        default:

            qDebug() << "Unhandled port error: " << error;

            break;

    }

}

void MainWindow::addData(double data)

{

    // shift data array and place new data at the end

    for (int i = 0; i < dataArray.size()-1; i++)

    {

        dataArray[i] = dataArray[i+1];

    }

    dataArray.last() = data;

    // update plot

    curve.setSamples(dataX, dataArray);

    ui->plot->replot();

}