/*****************************************************************************

    source::worx libPiGPio
    Copyright © 2022 c.holzheuer
    chris@sourceworx.org

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    Uses:

    pigpiod_if2 by joan2937, pigpio @ abyz.me.uk
    https://abyz.me.uk/rpi/pigpio

    sigslot  by 2017 Pierre-Antoine Lacaze
    https://github.com/palacaze/sigslot

***************************************************************************/


#ifndef PIGROTARYDIAL_H
#define PIGROTARYDIAL_H


#include <pigbutton.h>
#include <pigvalue.h>


/**
 * @brief The pigRotaryDial class
 *
 * TODO: flags: step oder detent, inc/dec oder value, set_range range_stop: until 100 or 100->0
 *
 */

class LIBPIGPIO_EXPORT pigRotaryDial : public pigButton, public pigValue<int>
{

public:

    pigRotaryDial();
    explicit pigRotaryDial( pigpio::bcm_t bcmButton, pigpio::bcm_t bcmUp, pigpio::bcm_t bcmDown );
    virtual ~pigRotaryDial();

    void init( pigpio::bcm_t bcmButton, pigpio::bcm_t bcmUp, pigpio::bcm_t bcmDown );

    virtual void reset();

protected:

    void trigger( pigpio::bcm_t bcm, uint32_t level ) override;

    constexpr const static int Transits[16]=
    {
        /* 0000 0001 0010 0011 0100 0101 0110 0111 */
              0,  -1,   1,   0,   1,   0,   0,  -1,
        /* 1000 1001 1010 1011 1100 1101 1110 1111 */
             -1,   0,   0,   1,   0,   1,  -1,   0
    };

    pigPinIn _pinDown;
    pigPinIn _pinUp;

    int   _levUp    = 0;
    int   _levDown  = 0;
    int   _oldState = -1;

};


#endif // PIGROTARYDIAL_H
