48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* 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 */
|