You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
115 lines
3.1 KiB
115 lines
3.1 KiB
/*
|
|
|
|
Debounce buttons and trigger events
|
|
Copyright (C) 2015 by Xose Pérez <xose dot perez at gmail dot com>
|
|
|
|
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 <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
#include <Arduino.h>
|
|
#include "DebounceEvent.h"
|
|
|
|
DebounceEvent::DebounceEvent(uint8_t pin, callback_t callback, uint8_t defaultStatus, unsigned long delay) {
|
|
_callback = callback;
|
|
DebounceEvent(pin, defaultStatus, delay);
|
|
}
|
|
|
|
DebounceEvent::DebounceEvent(uint8_t pin, uint8_t defaultStatus, unsigned long delay) {
|
|
|
|
// store configuration
|
|
_pin = pin;
|
|
_status = _defaultStatus = defaultStatus;
|
|
_delay = delay;
|
|
|
|
// set up button
|
|
if (_defaultStatus == LOW) {
|
|
pinMode(_pin, INPUT);
|
|
} else {
|
|
pinMode(_pin, INPUT_PULLUP);
|
|
}
|
|
|
|
}
|
|
|
|
bool DebounceEvent::loop() {
|
|
|
|
// holds whether status has changed or not
|
|
bool changed = false;
|
|
_event = EVENT_NONE;
|
|
|
|
if (digitalRead(_pin) != _status) {
|
|
|
|
// Debounce
|
|
delay(_delay);
|
|
uint8_t newStatus = digitalRead(_pin);
|
|
if (newStatus != _status) {
|
|
|
|
changed = true;
|
|
_clicked = 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 {
|
|
|
|
// We are not setting the event type here because we still don't
|
|
// know what kind of event it will be (it might be a double click).
|
|
// Instead we are setting the _clicked variable to check later
|
|
_clicked = true;
|
|
changed = false;
|
|
|
|
}
|
|
|
|
// pressed
|
|
} else {
|
|
|
|
_last_start = _this_start;
|
|
_this_start = millis();
|
|
_event = EVENT_PRESSED;
|
|
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
if (_clicked && (millis() - _this_start > DOUBLE_CLICK_DELAY) && (!changed) && (_status == _defaultStatus)) {
|
|
_clicked = 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;
|
|
}
|