PqInputs.h

/*
 * PqInputs.h
 *
 * (c) 2015 Sofian Audry        :: info(@)sofianaudry(.)com
 * (c) 2015 Thomas O Fredericks :: tof(@)t-o-f(.)info
 *
 * 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef PQ_INPUTS_H_
#define PQ_INPUTS_H_
 
#include "PqCore.h"
#include "MovingAverage.h"
 
namespace pq {
 
enum {
  DEBOUNCE_STABLE,
  DEBOUNCE_LOCK_OUT,
  DEBOUNCE_PROMPT_DETECT
};
 
// Deprecated.
#define EXTERNAL_PULLDOWN DIRECT
#define EXTERNAL_PULLUP   INVERTED
#define ANALOG_DEFAULT    DIRECT
#define ANALOG_INVERTED   INVERTED
 
class Smoothable {
public:
  Smoothable();
 
  virtual void smooth(float smoothTime=PLAQUETTE_DEFAULT_SMOOTH_WINDOW) { timeWindow(smoothTime); }
 
  virtual void noSmooth() { smooth(PLAQUETTE_NO_SMOOTH_WINDOW); }
 
  virtual void timeWindow(float seconds) { _avg.timeWindow(seconds); }
 
  float timeWindow() const { return _avg.timeWindow(); }
 
  virtual void cutoff(float hz) { _avg.cutoff(hz); }
 
  float cutoff() const { return _avg.cutoff(); }
 
protected:
  // Raw read function.
  virtual float _read() = 0;
 
  // Returns current sample rate in seconds.
  virtual float _sampleRate() const = 0;
 
  // Resets smoothing.
  virtual void _begin();
 
  // Performs update based on value returned by read().
  virtual void _step();
 
  // Returns smoothed value.
  virtual float _smoothed() { return _avg.get(); }
 
  // The moving average.
  MovingAverage _avg;
};
 
class Debounceable {
public:
  Debounceable();
 
  virtual void debounce(float debounceTime=PLAQUETTE_DEFAULT_DEBOUNCE_WINDOW) { timeWindow(debounceTime); }
 
  virtual void noDebounce() { debounce(PLAQUETTE_NO_DEBOUNCE_WINDOW); }
 
  virtual void smooth(float smoothTime=PLAQUETTE_DEFAULT_DEBOUNCE_WINDOW) { debounce(smoothTime); }
 
  virtual void noSmooth() { noDebounce(); }
 
  virtual void timeWindow(float seconds) { _interval = seconds; }
 
  float timeWindow() const { return _interval; }
 
  uint8_t debounceMode() const { return _debounceMode; }
 
  void debounceMode(uint8_t mode) { _debounceMode = mode; }
 
protected:
  // Raw read function.
  virtual bool _isOn() = 0;
 
  // Returns current time in seconds.
  virtual float _time() const = 0;
 
  // Resets debouncing.
  virtual void _begin();
 
  // Performs update based on value returned by read().
  virtual void _step();
 
  // Returns debounced value.
  virtual bool _debounced();
 
  inline void _changeState();
  inline void _setStateFlag(const uint8_t flag)    { _state |= flag; }
  inline void _unsetStateFlag(const uint8_t flag)  { _state &= ~flag; }
  inline void _toggleStateFlag(const uint8_t flag) { _state ^= flag; }
  inline bool _getStateFlag(const uint8_t flag)    { return((_state & flag) != 0); }
 
  // The moving average.
  float _interval;
  float _startTime;
  uint8_t _state;
  uint8_t _debounceMode;
};
 
class AnalogIn : public Unit, public PinConfig, public Smoothable {
public:
  AnalogIn(uint8_t pin, Engine& engine = Engine::primary());
  AnalogIn(uint8_t pin, uint8_t mode, Engine& engine = Engine::primary());
  virtual ~AnalogIn() {}
 
  virtual float get() { return _smoothed(); }
 
  virtual float mapTo(float toLow, float toHigh);
 
  float read() const;
 
  int rawRead() const;
 
protected:
  virtual void begin();
  virtual void step();
 
  virtual float _read();
  virtual float _sampleRate() const { return sampleRate(); }
};
 
class DigitalIn : public DigitalSource, public PinConfig, public Debounceable {
public:
  DigitalIn(uint8_t pin, Engine& engine = Engine::primary());
  DigitalIn(uint8_t pin, uint8_t mode, Engine& engine = Engine::primary());
  virtual ~DigitalIn() {}
 
  virtual void mode(uint8_t mode);
 
  float read() const;
 
  int rawRead() const;
 
protected:
  virtual bool _isOn();
  virtual float _time() const { return seconds(); }
 
  virtual void _init();
 
  virtual void begin();
  virtual void step();
};
 
} // namespace pq
 
#endif