acromag.h

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/* Copyright 2017 Michael Olberg <michael.olberg@chalmers.se> */
#ifndef ACROMAG_H
#define ACROMAG_H

#include <QTcpSocket>
#include <QByteArray>
#include <QQueue>

#include "../constants.h"

class Acromag : public QTcpSocket
{
    enum { MBAPLEN = 8 };  /* length of MODBUS application protocoll header */

    Q_OBJECT
 public:
    enum Cartridge {
        OFF = 0,      
        A = 1,        
        B = 2,        
        C = 3         
    };

    static Acromag *instance()
    {
        if (gpio_instance == 0) gpio_instance = new Acromag();
        return gpio_instance;
    }
    ~Acromag();

    Sepia::Channel connectedLO() const;

    bool isConnected(Sepia::Channel channel) const;

 public slots:
    void connectToServer();

    void cartridge(Sepia::Channel channel, bool on);

    void setLOswitch(Sepia::Channel channel);

 private:
    static Acromag *gpio_instance;
    Acromag();

    void sendAll();
    void dumpBuffer(QByteArray) const;

    QQueue<quint16> words;
    quint16 m_inuse;
    Sepia::Channel m_lo;

    quint16 m_addr;
    quint16 transaction;
    quint16 protId;
    quint8 unitId;
};

#endif  // ACROMAG_H