2 Copyright 2013 Mathias Andersson <wraul@dbox.se>
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
18 #include "backlight.h"
22 backlight_config_t backlight_config;
24 /** \brief Backlight initialization
28 void backlight_init(void)
31 if (!eeconfig_is_enabled()) {
34 backlight_config.raw = eeconfig_read_backlight();
35 if (backlight_config.level > BACKLIGHT_LEVELS) {
36 backlight_config.level = BACKLIGHT_LEVELS;
38 backlight_set(backlight_config.enable ? backlight_config.level : 0);
41 /** \brief Backlight increase
45 void backlight_increase(void)
47 if(backlight_config.level < BACKLIGHT_LEVELS)
49 backlight_config.level++;
51 backlight_config.enable = 1;
52 eeconfig_update_backlight(backlight_config.raw);
53 dprintf("backlight increase: %u\n", backlight_config.level);
54 backlight_set(backlight_config.level);
57 /** \brief Backlight decrease
61 void backlight_decrease(void)
63 if(backlight_config.level > 0)
65 backlight_config.level--;
66 backlight_config.enable = !!backlight_config.level;
67 eeconfig_update_backlight(backlight_config.raw);
69 dprintf("backlight decrease: %u\n", backlight_config.level);
70 backlight_set(backlight_config.level);
73 /** \brief Backlight toggle
77 void backlight_toggle(void)
79 bool enabled = backlight_config.enable;
80 dprintf("backlight toggle: %u\n", enabled);
87 /** \brief Enable backlight
91 void backlight_enable(void)
93 if (backlight_config.enable) return; // do nothing if backlight is already on
95 backlight_config.enable = true;
96 if (backlight_config.raw == 1) // enabled but level == 0
97 backlight_config.level = 1;
98 eeconfig_update_backlight(backlight_config.raw);
99 dprintf("backlight enable\n");
100 backlight_set(backlight_config.level);
103 /** /brief Disable backlight
107 void backlight_disable(void)
109 if (!backlight_config.enable) return; // do nothing if backlight is already off
111 backlight_config.enable = false;
112 eeconfig_update_backlight(backlight_config.raw);
113 dprintf("backlight disable\n");
117 /** /brief Get the backlight status
121 bool is_backlight_enabled(void)
123 return backlight_config.enable;
126 /** \brief Backlight step through levels
130 void backlight_step(void)
132 backlight_config.level++;
133 if(backlight_config.level > BACKLIGHT_LEVELS)
135 backlight_config.level = 0;
137 backlight_config.enable = !!backlight_config.level;
138 eeconfig_update_backlight(backlight_config.raw);
139 dprintf("backlight step: %u\n", backlight_config.level);
140 backlight_set(backlight_config.level);
143 /** \brief Backlight set level
147 void backlight_level(uint8_t level)
149 if (level > BACKLIGHT_LEVELS)
150 level = BACKLIGHT_LEVELS;
151 backlight_config.level = level;
152 backlight_config.enable = !!backlight_config.level;
153 eeconfig_update_backlight(backlight_config.raw);
154 backlight_set(backlight_config.level);
157 /** \brief Get backlight level
161 uint8_t get_backlight_level(void)
163 return backlight_config.level;