mainwindow.h
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	#ifndef MAINWINDOW_H
	#define MAINWINDOW_H

	#include <QMainWindow>
	#include <QSerialPort>
	#include <QTimer>

	namespace Ui {
	class MainWindow;
	}

	class MainWindow : public QMainWindow
	{
	Q_OBJECT

	public:
	explicit MainWindow(QWidget *parent = 0);
	~MainWindow();

	public slots:
	void onReceivedData();
	void zero();
	void updateDisplay();
	void clearDisplay();

	protected:
	void sendPacket(quint8 messageType, QByteArray dataBytes = QByteArray());

	private:
	Ui::MainWindow *ui;
	QSerialPort serial;
	QTimer updateTimer;

	QByteArray rxBuffer;
	int rxCurrentMessageType, rxBytesCount;
	quint8 firstHalfByte;
	quint8 rxDataBytesBuffer[1024];

	int encoderVarIndex;
	double lastEncoderValue; // [um].
	double encoderOffset;
	};

	#endif // MAINWINDOW_H