renderbug-cpp/src/inputs/Buttons.cpp

#include "./Buttons.h"

void
Buttons::onStart()
{
    for(int i = 0; i < 3; i++) {
        //Log.info("Bound pin %d to button %d", 2 + i, i);
        m_buttons[i].attach(2 + i, INPUT_PULLDOWN);
        m_buttons[i].interval(15);
    }
}

InputEvent
Buttons::read()
{
    for(int i = 0; i < 3; i++) {
        m_buttons[i].update();
        if (m_buttons[i].rose()) {
            //Log.info("Read press on %d", i);
            int buttonID = m_buttonMap[i];
            for(int j = 0; j < 3; j++ ) {
                if (j != i && m_buttons[j].held()) {
                    buttonID |= m_buttonMap[j];
                    //Log.info("Chord with %d", j);
                    m_wasChord[j] = true;
                }
            }
            if (m_wasChord[i]) {
                //Log.info("Not emitting release from previous chord");
                m_wasChord[i] = false;
            } else {
                return InputEvent{InputEvent::UserInput, buttonID};
            }
        }
    }
    return InputEvent{};
}