FS#8961 - Anti-Aliased Fonts.
[kugel-rb.git] / firmware / export / backlight-sw-fading.h
blob7a0dedaf46ae7999b74a6360f546b17c3027f629
1 /***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
10 * Copyright (C) 2008 by Thomas Martitz
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
20 ****************************************************************************/
22 #ifndef BACKLIGHT_SW_FADING_H
23 #define BACKLIGHT_SW_FADING_H
26 /* total fading time will be current brightness level * FADE_DELAY * 10ms */
27 #if (MAX_BRIGHTNESS_SETTING >= 25)
28 #define FADE_DELAY 2 /* =HZ/50 => 20ms */
29 #elif (MAX_BRIGHTNESS_SETTING >= 16)
30 #define FADE_DELAY 3 /* =HZ/33 => 30ms */
31 #else
32 #define FADE_DELAY 4 /* =HZ/25 => 40ms*/
33 #endif
36 void _backlight_fade_update_state(int brightness);
37 bool _backlight_fade_step(int direction);
39 /* enum used for both, fading state and fading type selected through the settings */
41 enum {
42 NOT_FADING = 0,
43 FADING_UP,
44 FADING_DOWN,
47 #endif /* BACKLIGHT_SW_FADING_H */