/* Debounce buttons and trigger events Copyright (C) 2015 by Xose PĂ©rez This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #include #include "DebounceEvent.h" DebounceEvent::DebounceEvent(uint8_t pin, callback_t callback, uint8_t defaultStatus, unsigned long delay) { // store configuration _pin = pin; _status = _defaultStatus = defaultStatus; _delay = delay; _callback = callback; // set up button if (_defaultStatus == LOW) { pinMode(_pin, INPUT); } else { pinMode(_pin, INPUT_PULLUP); } } bool DebounceEvent::loop() { // holds whether status has changed or not static bool pending = false; bool changed = false; _event = EVENT_NONE; if (digitalRead(_pin) != _status) { // Debounce delay(_delay); uint8_t newStatus = digitalRead(_pin); if (newStatus != _status) { changed = true; pending = false; _status = newStatus; // released if (_status == _defaultStatus) { // get event if (millis() - _this_start > LONG_CLICK_DELAY) { _event = EVENT_LONG_CLICK; } else if (millis() - _last_start < DOUBLE_CLICK_DELAY ) { _event = EVENT_DOUBLE_CLICK; } else { Serial.println("deferring"); changed = false; pending = true; //_event = EVENT_SINGLE_CLICK; } // pressed } else { _last_start = _this_start; _this_start = millis(); _event = EVENT_PRESSED; } } } if (pending && (millis() - _this_start > DOUBLE_CLICK_DELAY) && (!changed) && (_status == _defaultStatus)) { Serial.println("catched"); pending = false; changed = true; _event = EVENT_SINGLE_CLICK; } if (changed) { if (_callback) { _callback(_pin, EVENT_CHANGED); _callback(_pin, _event); } } return changed; } bool DebounceEvent::pressed() { return (_status != _defaultStatus); } uint8_t DebounceEvent::getEvent() { return _event; }