raspikeyer/src/keyer.h

#pragma once

#include <queue>
//#include <string>

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

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 sendMessage(std::string msg);
    void sendCharacter(const char ch);

    void run();
    void stop();

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

    enum class MessageState {
      Wait,
      Dit,
      Dah,
      IntraCharSpace,
      InterCharSpace,
      InterWordSpace,
      Abort,
    };

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

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

    Sidetone m_buzzer;
    // Sidetone m_audioOut;

    State m_paddleKeyingState {State::Wait};
    State m_previousState {State::Wait};

    std::queue<char> m_messageQueue;
    MessageState m_messageKeyingState {MessageState::Wait};
    char m_messageChar{};

    uint64_t m_elementDuration {0};
    bool m_currentlyKeying {false};
    bool m_currentlyPausing {false};
    bool m_keyNextIambicB {false};
};