Abstract/MIDIButtonLatching.hpp

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#pragma once
 
#include <AH/Hardware/Button.hpp>
#include <Def/Def.hpp>
#include <MIDI_Outputs/Abstract/MIDIOutputElement.hpp>
 
BEGIN_CS_NAMESPACE
 
/**
 * @brief   A class for latching buttons and switches that send MIDI events.
 *
 * The button is debounced.
 *
 * @see     Button
 */
template <class Sender>
class MIDIButtonLatching : public MIDIOutputElement {
  protected:
    /**
     * @brief   Construct a new MIDIButtonLatching.
     *
     * @param   pin
     *          The digital input pin with the button connected.
     *          The internal pull-up resistor will be enabled.
     * @param   address
     *          The MIDI address to send to.
     * @param   sender
     *          The MIDI sender to use.
     */
    MIDIButtonLatching(pin_t pin, const MIDICNChannelAddress &address,
                       const Sender &sender)
        : button{pin}, address(address), sender{sender} {}
 
  public:
    void begin() override { button.begin(); }
    void update() override {
        AH::Button::State state = button.update();
        if (state == AH::Button::Falling || state == AH::Button::Rising) {
            sender.sendOn(address);
            sender.sendOff(address);
        }
    }
 
    AH::Button::State getButtonState() const { return button.getState(); }
 
  private:
    AH::Button button;
    const MIDICNChannelAddress address;
 
  public:
    Sender sender;
};
 
END_CS_NAMESPACE