/elec/propeller-clock

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58 by edam
removed Bounce library and updated/fixed new code
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/*
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 * button.h
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 *
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 * Copyright (C) 2011 Tim Marston <tim@ed.am> and Dan Marston.
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 *
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 * This file is part of propeller-clock (hereafter referred to as "this
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 * program"). See http://ed.am/dev/software/arduino/propeller-clock for more
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 * information.
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU Lesser General Public License as published
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 * by the Free Software Foundation, either version 3 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public License
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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#ifndef _BUTTON_H_
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#define _BUTTON_H_
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class Button
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{
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public:
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	/**
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	 * Constructor.
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	 *
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	 * @param pin the pin to monitor
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	 */
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	Button( int pin );
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	/**
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	 * Set event times.
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	 *
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	 * @oaram pointer to ordered, zero-terminated array of event times
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	 */
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	void set_event_times( int *event_times );
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	/**
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	 * Update internal state (call as regularly sa possible!)
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	 */
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	void update();
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	/**
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	 * Get the first pending event.
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	 *
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	 * @return event id, 0 if there isn't any
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	 */
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	int get_event();
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protected:
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	/** pin */
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	int _pin;
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	/** current state */
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	bool _state;
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	/** time when current state began */
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	unsigned long _state_millis;
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	/** milliseconds that have been accountred for (in terms of
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	 * triggering events) since current state began */
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	unsigned long _state_duration;
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	/** pointer to event times */
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	int *_event_times;
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	/** pending event */
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	int _pending_event;
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};
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#endif //_BUTTON_H_