Keezer/button.cpp at master · gharris012/Keezer · GitHub

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#include "Button.h"

void check_buttons(Button *fbuttons, uint8_t buttonCount)
{
    uint8_t i;
    uint8_t buttonState;

    // check the buttons
    for ( i = 0 ; i < buttonCount ; i ++ )
    {
        buttonState = digitalRead(fbuttons[i].pin);
        if ( buttonState != fbuttons[i].lastState )
        {
            if ( millis() < fbuttons[i].debounceTime )
            {
                fbuttons[i].debounceTime = millis();
            }
            if ( buttonState == fbuttons[i].debounceState )
            {
                if ( millis() - fbuttons[i].debounceTime > BUTTON_DEBOUNCE_DELAY )
                {
                    if ( fbuttons[i].lastState == LOW && buttonState == HIGH )
                    {
                        if ( millis() - fbuttons[i].pressTime > BUTTON_LONGPRESS_THRESHOLD )
                        {
                            button_onLongClick(&fbuttons[i]);
                        }
                        else
                        {
                            button_onClick(&fbuttons[i]);
                        }
                    }
                    button_onRelease(&fbuttons[i]);

                    if ( fbuttons[i].lastState == HIGH && buttonState == LOW )
                    {
                        button_onPress(&fbuttons[i]);
                        fbuttons[i].pressTime = millis();
                    }

                    fbuttons[i].lastState = buttonState;
                }
            }
            else
            {
                fbuttons[i].debounceState = buttonState;
                fbuttons[i].debounceTime = millis();
            }
        }
    }
}

void setup_buttons(Button *fbuttons, uint8_t buttonCount)
{
    uint8_t i;

    for ( i = 0 ; i < buttonCount ; i ++ )
    {
        Serial.print("setting up ");
        Serial.println(fbuttons[i].name);
        pinMode(fbuttons[i].pin, INPUT_PULLUP);
        fbuttons[i].debounceState = HIGH;
        fbuttons[i].lastState = HIGH;
    }
}