/*
Copyright 2013 Mathias Andersson <wraul@dbox.se>
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 program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "backlight.h"
#include "eeconfig.h"
#include "debug.h"
backlight_config_t backlight_config;
/** \brief Backlight initialization
*
* FIXME: needs doc
*/
void backlight_init(void)
{
/* check signature */
if (!eeconfig_is_enabled()) {
eeconfig_init();
}
backlight_config.raw = eeconfig_read_backlight();
if (backlight_config.level > BACKLIGHT_LEVELS) {
backlight_config.level = BACKLIGHT_LEVELS;
}
backlight_set(backlight_config.enable ? backlight_config.level : 0);
}
/** \brief Backlight increase
*
* FIXME: needs doc
*/
void backlight_increase(void)
{
if(backlight_config.level < BACKLIGHT_LEVELS)
{
backlight_config.level++;
}
backlight_config.enable = 1;
eeconfig_update_backlight(backlight_config.raw);
dprintf("backlight increase: %u\n", backlight_config.level);
backlight_set(backlight_config.level);
}
/** \brief Backlight decrease
*
* FIXME: needs doc
*/
void backlight_decrease(void)
{
if(backlight_config.level > 0)
{
backlight_config.level--;
backlight_config.enable = !!backlight_config.level;
eeconfig_update_backlight(backlight_config.raw);
}
dprintf("backlight decrease: %u\n", backlight_config.level);
backlight_set(backlight_config.level);
}
/** \brief Backlight toggle
*
* FIXME: needs doc
*/
void backlight_toggle(void)
{
bool enabled = backlight_config.enable;
dprintf("backlight toggle: %u\n", enabled);
if (enabled)
backlight_disable();
else
backlight_enable();
}
/** \brief Enable backlight
*
* FIXME: needs doc
*/
void backlight_enable(void)
{
if (backlight_config.enable) return; // do nothing if backlight is already on
backlight_config.enable = true;
if (backlight_config.raw == 1) // enabled but level == 0
backlight_config.level = 1;
eeconfig_update_backlight(backlight_config.raw);
dprintf("backlight enable\n");
backlight_set(backlight_config.level);
}
/** /brief Disable backlight
*
* FIXME: needs doc
*/
void backlight_disable(void)
{
if (!backlight_config.enable) return; // do nothing if backlight is already off
backlight_config.enable = false;
eeconfig_update_backlight(backlight_config.raw);
dprintf("backlight disable\n");
backlight_set(0);
}
/** /brief Get the backlight status
*
* FIXME: needs doc
*/
bool is_backlight_enabled(void)
{
return backlight_config.enable;
}
/** \brief Backlight step through levels
*
* FIXME: needs doc
*/
void backlight_step(void)
{
backlight_config.level++;
if(backlight_config.level > BACKLIGHT_LEVELS)
{
backlight_config.level = 0;
}
backlight_config.enable = !!backlight_config.level;
eeconfig_update_backlight(backlight_config.raw);
dprintf("backlight step: %u\n", backlight_config.level);
backlight_set(backlight_config.level);
}
/** \brief Backlight set level
*
* FIXME: needs doc
*/
void backlight_level(uint8_t level)
{
if (level > BACKLIGHT_LEVELS)
level = BACKLIGHT_LEVELS;
backlight_config.level = level;
backlight_config.enable = !!backlight_config.level;
eeconfig_update_backlight(backlight_config.raw);
backlight_set(backlight_config.level);
}
/** \brief Get backlight level
*
* FIXME: needs doc
*/
uint8_t get_backlight_level(void)
{
return backlight_config.level;
}