/*
	button.h

	This defines a sample for a very simple "peripheral"
	that can talk to an AVR core.
	It is in fact a bit more involved than strictly necessary,
	but is made to demonstrante a few useful features that are
	easy to use.

	Copyright 2008, 2009 Michel Pollet <buserror@gmail.com>

 	This file is part of simavr.

	simavr 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.

	simavr 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 simavr.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __BUTTON_H__
#define __BUTTON_H__

#include "sim_irq.h"

enum {
	IRQ_BUTTON_OUT = 0,
	IRQ_BUTTON_COUNT
};

typedef struct button_t {
	avr_irq_t * irq;	// output irq
	struct avr_t * avr;
	uint8_t value;
} button_t;

void
button_init(
		struct avr_t * avr,
		button_t * b,
		const char * name);

void
button_press(
		button_t * b,
		uint32_t duration_usec);

void
button_release(
		button_t * b);

#endif /* __BUTTON_H__*/