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This commit is contained in:
fvanroie 2020-02-21 21:48:06 +01:00
parent cdcc127a26
commit dfde8c79ba
1 changed files with 37 additions and 45 deletions
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82
lib/Button/Button.cpp
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@ -1,81 +1,73 @@
/* /*
Button - a small library for Arduino to handle button debouncing Button - a small library for Arduino to handle button debouncing
MIT licensed.
MIT licensed.
*/ */
#include "Button.h" #include "Button.h"
#include <Arduino.h> #include <Arduino.h>
Button::Button(uint8_t pin) Button::Button(uint8_t pin) : _pin(pin), _delay(100), _state(HIGH), _ignore_until(0), _has_changed(false)
: _pin(pin) {}
, _delay(500)
, _state(HIGH)
, _ignore_until(0)
, _has_changed(false)
{
}
void Button::begin() void Button::begin()
{ {
pinMode(_pin, INPUT_PULLUP); pinMode(_pin, INPUT_PULLUP);
} }
// //
// public methods // public methods
// //
bool Button::read() bool Button::read()
{ {
// ignore pin changes until after this delay time // ignore pin changes until after this delay time
if (_ignore_until > millis()) if(_ignore_until > millis()) {
{ // ignore any changes during this period
// ignore any changes during this period }
}
// pin has changed
// pin has changed else if(digitalRead(_pin) != _state) {
else if (digitalRead(_pin) != _state) _ignore_until = millis() + _delay;
{ _state = !_state;
_ignore_until = millis() + _delay; _has_changed = true;
_state = !_state; }
_has_changed = true;
} return _state;
return _state;
} }
// has the button been toggled from on -> off, or vice versa // has the button been toggled from on -> off, or vice versa
bool Button::toggled() bool Button::toggled()
{ {
read(); read();
return has_changed(); return has_changed();
} }
// mostly internal, tells you if a button has changed after calling the read() function // mostly internal, tells you if a button has changed after calling the read() function
bool Button::has_changed() bool Button::has_changed()
{ {
if (_has_changed == true) if(_has_changed == true) {
{ _has_changed = false;
_has_changed = false; return true;
return true; }
} return false;
return false;
} }
// has the button gone from off -> on // has the button gone from off -> on
bool Button::pressed() bool Button::pressed()
{ {
if (read() == PRESSED && has_changed() == true) if(read() == PRESSED && has_changed() == true)
return true; return true;
else else
return false; return false;
} }
// has the button gone from on -> off // has the button gone from on -> off
bool Button::released() bool Button::released()
{ {
if (read() == RELEASED && has_changed() == true) if(read() == RELEASED && has_changed() == true)
return true; return true;
else else
return false; return false;
} }