creating a LOOPER

[santta]

Pieter, hello, one of the modes of my Foot switch will be LOOPER (in my guitar VST amplitube5).
The instructions for its use state the following:

• Tap once: RECORD/OVERDUB/PLAY on the corresponding track.
• Double tapping: stop any playback or overdubbing on that track.
• Press & hold: erase the corresponding loop.

but it doesn't work from CCbutton and CCButtonLatched.
I've seen issues like this and you advised using the "LongPress" code.

Unfortunately, I could not master the code from your answer, could you describe in a little more detail how you can implement "Double tapping" and "Press & hold".

Thank you.

[santta]

Please, anyone have any ideas?

[tttapa]

I'm afraid this is outside of the support I can give here, it might be more suitable for https://forum.arduino.cc. Be sure to ask specific questions about what you don't understand.

Here's an example sketch:

#include <Control_Surface.h>

class MultiPurposeButton {
  public: 
    MultiPurposeButton(pin_t pin) : button(pin) {}

    enum Event {
      None, PressStart, ShortPressRelease, LongPress, LongPressRelease, SecondPressStart,
    };

    void begin() { button.begin(); }

    Event update() {
      Event event = None;
      switch (button.update()) {
        case Button::Released: {} break;
        case Button::Falling: {
          auto now = millis();
          event = (now - pressStartTime <= secondPressDelay) ? SecondPressStart : PressStart;
          pressStartTime = now;
        } break;
        case Button::Pressed: {
          auto now = millis();
          if (not longPress && now - pressStartTime >= longPressDelay) {
            event = LongPress;
            longPress = true;
          }
        } break;
        case Button::Rising: {
          event = longPress ? LongPressRelease : ShortPressRelease;
          longPress = false;
        } break;
      }
      return event;
    }

  private:
    Button button;
    unsigned long longPressDelay = 1000;
    unsigned long secondPressDelay = 400;
    unsigned long pressStartTime = -1ul - secondPressDelay ;
    bool longPress = false;

  public:
    friend FlashString_t to_string(Event ev) {
      switch (ev) {
        case None: return F("None");
        case PressStart: return F("PressStart");
        case ShortPressRelease: return F("ShortPressRelease");
        case LongPress: return F("LongPress");
        case LongPressRelease: return F("LongPressRelease");
        case SecondPressStart: return F("SecondPressStart");
        default: return F("<invalid>");
      }
    }
};

MultiPurposeButton btn = 4;

void setup() {
  Serial.begin(115200);
  while (!Serial);
  btn.begin();
}

void loop() {
  MultiPurposeButton::Event event = btn.update();
  if (event != MultiPurposeButton::None) {
    Serial.println(to_string(event));
  }
}

A short press will result in the following events:
PressStart → ShortPressRelease
A double tap:
PressStart → ShortPressRelease → SecondPressStart → ShortPressRelease
A long press:
PressStart → LongPress → LongPressRelease

[santta]

Thank you Pieter, sorry, if I pester you with my questions. You have a wonderful library and it helps me develop my creativity with midi projects🤗