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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Thomas Martitz
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef BACKLIGHT_SW_FADING_H
#define BACKLIGHT_SW_FADING_H
/* total fading time will be current brightness level * FADE_DELAY * 10ms */
#if (MAX_BRIGHTNESS_SETTING >= 25)
#define FADE_DELAY 2 /* =HZ/50 => 20ms */
#elif (MAX_BRIGHTNESS_SETTING >= 16)
#define FADE_DELAY 3 /* =HZ/33 => 30ms */
#else
#define FADE_DELAY 4 /* =HZ/25 => 40ms*/
#endif
void _backlight_fade_update_state(int brightness);
bool _backlight_fade_step(int direction);
/* enum used for both, fading state and fading type selected through the settings */
enum {
NOT_FADING = 0,
FADING_UP,
FADING_DOWN,
};
#endif /* BACKLIGHT_SW_FADING_H */
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