simple_button.h

// SPDX-FileCopyrightText: AC SOFTWARE SP. Z O.O.
// SPDX-License-Identifier: GPL-2.0-or-later
 
#ifndef SRC_SUPLA_CONTROL_SIMPLE_BUTTON_H_
#define SRC_SUPLA_CONTROL_SIMPLE_BUTTON_H_
 
#include <stdint.h>
 
#include "../io.h"
#include "../element.h"
#include "../events.h"
#include "../local_action.h"
 
namespace Supla {
namespace Control {
 
enum StateResults { PRESSED, RELEASED, TO_PRESSED, TO_RELEASED };
 
class ButtonState {
 public:
  explicit ButtonState(Supla::Io::IoPin inputPin);
  ButtonState(Supla::Io::Base *io, int pin, bool pullUp, bool invertLogic);
  ButtonState(int pin, bool pullUp, bool invertLogic);
  enum StateResults update();
  enum StateResults getLastState() const;
  bool isPressedOrPending() const;
  void init(int buttonNumber);
 
  void setSwNoiseFilterDelay(unsigned int newDelayMs);
  void setDebounceDelay(unsigned int newDelayMs);
  int getGpio() const;
 
  bool isReady() const;
 
 protected:
  int valueOnPress() const;
 
  Supla::Io::IoPin inputPin;
 
  uint16_t debounceDelayMs = 50;
  uint16_t swNoiseFilterDelayMs = 20;
  uint32_t debounceTimestampMs = 0;
  uint32_t filterTimestampMs = 0;
  int8_t newStatusCandidate = 0;
  int8_t prevState = -1;
};
 
class SimpleButton : public Element, public LocalAction {
 public:
  explicit SimpleButton(Supla::Io::IoPin inputPin);
  explicit SimpleButton(Supla::Io::Base *io,
                        int pin,
                        bool pullUp = false,
                        bool invertLogic = false);
  explicit SimpleButton(int pin, bool pullUp = false, bool invertLogic = false);
 
  void onTimer() override;
  void onInit() override;
  void setSwNoiseFilterDelay(unsigned int newDelayMs);
  void setDebounceDelay(unsigned int newDelayMs);
 
  enum StateResults getLastState() const;
 
  bool isReady() const;
 
 protected:
  // Returns unique button number (current implementation returns configured
  // GPIO)
  virtual int8_t getButtonNumber() const;
  ButtonState state;
};
 
};  // namespace Control
};  // namespace Supla
 
#endif  // SRC_SUPLA_CONTROL_SIMPLE_BUTTON_H_