buttons.h

qt91上实现的mp3播放机,支持sam9260,参考用

#ifndef _BUTTONS_H_
#define _BUTTONS_H_

/*
 * Copyright (C) 2007 by egnite Software GmbH. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
 * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * For additional information see http://www.ethernut.de/
 *
 */

/*!
 * \file buttons.h
 * \brief Simple button interface header.
 *
 * \verbatim
 *
 * $Log$
 *
 * \endverbatim
 */

/*!
 * \brief Key code of the UP button.
 *
 * This code is returned by ButtonRead(), if the user
 * presses the right button on the Calypso Board.
 */
#define KEYCODE_UP      'U'

/*!
 * \brief Key code of the DOWN button.
 *
 * This code is returned by ButtonRead(), if the user
 * presses the left button on the Calypso Board.
 */
#define KEYCODE_DOWN    'D'

/*!
 * \brief Key code of the SELECT button.
 *
 * This code is returned by ButtonRead(), if the user
 * presses the middle button on the Calypso Board.
 */
#define KEYCODE_SELECT  'S'

extern void ButtonInit(void);
extern char ButtonRead(u_long tmo);

#endif