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ChatterButton

Contacts debounce assistant for stable operation of buttons and other hardware triggers.

  • works with buttons on GND or Vdd connect
  • time tracking of button's states
  • can check button's state directly or with callback function
  • can button update from main loop or with hardware interrupt
  • compatible with Arduino and some many other platforms

Usage (see examples folder)

  1. Create instance like: ChatterButton button(CButtonWire::GND);
  2. Set handler if needed: button.setHandler(buttonState);

handler:

void buttonState(bool active) {
	digitalWrite(LED_BUILTIN, active);
    Serial.println("Previous state duration: " + String(button.getPreviousStateDuration()) +" ms");
    Serial.println("<method A> button " + String(active ? "pressed" : "released"));
}
  1. Organize update button state in runloop:
void loop() {
    button.update(digitalRead(BUTTON_PIN));
}
  1. Bingo!

You can check button state in hadler function or direct button poll:

if (button.didChange()) {
	Serial.println("String(button ? "pressed" : "released")); 
}

Some features

  • Select button's connection closed on GND or Vdd (positive) also it use to correct connect inverted (normal close) button in constructor ChatterButton(CButtonWire) // CButtonWire has ::GND and ::Vdd options

  • Request current button state from instance; true - active; once call will reset 'didChange()' flag if (button) { /*do something*/ }

  • Once check button state change; will reset after call 'operator bool()' if (button.didChange()) {...}

  • Force set button state; didChange() doesn't triggered; (use for forced init etc) button.set(bool state);

  • Request duration of current button state; milliseconds button.getStateDuration();

  • Request duration of previous button state; milliseconds button.getPreviousStateDuration();

The MIT License (MIT) Copyright (c) 2022 0xdeb 0xdeb@mail.ru