Add Library

libraries/ButtonDebounce/src/ButtonDebounce.cpp

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+#include "Arduino.h"
+#include "ButtonDebounce.h"
+
+ButtonDebounce::ButtonDebounce(int pin, unsigned long delay){
+  pinMode(pin, INPUT_PULLUP);
+  _pin = pin;
+  _delay = delay;
+  _lastDebounceTime = 0;
+  _lastStateBtn = HIGH;
+}
+
+bool ButtonDebounce::isTimeToUpdate(){
+  return (millis() - _lastDebounceTime) > _delay;
+}
+
+void ButtonDebounce::update(){
+  if(!isTimeToUpdate()) return;
+  _lastDebounceTime = millis();
+  int btnState = digitalRead(_pin);
+  if(btnState == _lastStateBtn) return;
+  _lastStateBtn = btnState;
+  if(this->callback) this->callback(_lastStateBtn);
+}
+
+int ButtonDebounce::state(){
+  return _lastStateBtn;
+}
+
+void ButtonDebounce::setCallback(BTN_CALLBACK){
+  this->callback = callback;
+}

libraries/ButtonDebounce/src/ButtonDebounce.h

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+/*
+  ButtonDebounce.h - Library for Button Debounce.
+  Created by Maykon L. Capellari, September 30, 2017.
+  Released into the public domain.
+*/
+#ifndef ButtonDebounce_h
+#define ButtonDebounce_h
+
+#include "Arduino.h"
+
+#define BTN_CALLBACK void (*callback)(int)
+
+class ButtonDebounce{
+  private:
+    int _pin;
+    unsigned long _delay;
+    unsigned long _lastDebounceTime;
+    int _lastStateBtn;
+    BTN_CALLBACK;
+    bool isTimeToUpdate();
+  public:
+    ButtonDebounce(int pin, unsigned long delay);
+    void update();
+    int state();
+    void setCallback(BTN_CALLBACK);
+};
+
+#endif