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BricktronicsButton.h
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BricktronicsButton.h
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/*
BricktronicsButton v1.2 - A software library for LEGO NXT Pushbutton sensors.
Copyright (C) 2015 Adam Wolf, Matthew Beckler, John Baichtal
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 2
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Wayne and Layne, LLC and our products are not connected to or endorsed by the LEGO Group.
LEGO, Mindstorms, and NXT are trademarks of the LEGO Group.
*/
#ifndef BRICKTRONICSBUTTON_H
#define BRICKTRONICSBUTTON_H
// Arduino header files
#include <stdint.h>
#if ARDUINO >= 100
#include "Arduino.h"
#else
#include "WProgram.h"
#endif
// Library header files
#include "utility/BricktronicsSettings.h"
class BricktronicsButton
{
public:
// Constructor - Simple constructor accepts an input pin
BricktronicsButton(uint8_t inputPin);
// Constructor - Advanced constructor accepts a SensorSettings
// struct to also override the low-level Arduino functions.
BricktronicsButton(const BricktronicsSensorSettings &settings);
// Set up the input pin
void begin(void);
// Returns true if the button is currently pressed
bool isPressed(void);
// Returns true if the button is currently released
bool isReleased(void);
//private:
// We really don't like to hide things inside private,
// but if we did, these would be the private items.
uint8_t _inputPin;
// For the Bricktronics Shield, which has an I2C I/O expander chip,
// we need a way to override some common Arduino functions. We use
// function pointers here to handle this. For the non-Bricktronics
// Shield cases, the simple constructor above provides the built-in
// functions.
void (*_pinMode)(uint8_t, uint8_t);
void (*_digitalWrite)(uint8_t, uint8_t);
int (*_digitalRead)(uint8_t);
};
#endif // #ifndef BRICKTRONICSBUTTON_H