raspikeyer/src/keyer.h

#pragma once

#include "settings.h"
#include "sidetone.h"

extern const uint BUZZER_PIN;

class Keyer final
{
  public:
    Keyer() = delete;
    Keyer(uint8_t wpm, Mode mode);

    void setMode(Mode mode) { m_mode = mode; }
    void setSpeed(uint8_t wpm);

    void run();
    void stop();

  private:
    enum class State {
        Wait,
        Dit,
        Dah,
        DitPause,
        DahPause,
        Abort,
    };

    uint8_t m_wpm{18};
    Mode m_mode{Mode::IAMBIC_B};

    absolute_time_t m_keying_until{0};
    absolute_time_t m_pausing_until{0};

    Sidetone m_Sidetone{BUZZER_PIN};

    State m_state{State::Wait};
    State m_previousState{State::Wait};
    uint64_t m_elementDuration{0};
    bool m_currentlyKeying{false};
    bool m_currentlyPausing{false};
    bool m_keyNextIambicB{false};
};