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/*
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/>.
*/
#pragma once
#include <stdint.h>
#include <stdbool.h>
#ifndef BACKLIGHT_LEVELS
# define BACKLIGHT_LEVELS 3
#elif BACKLIGHT_LEVELS > 31
# error "Maximum value of BACKLIGHT_LEVELS is 31"
#endif
#ifndef BACKLIGHT_ON_STATE
# define BACKLIGHT_ON_STATE 1
#endif
#ifndef BREATHING_PERIOD
# define BREATHING_PERIOD 6
#endif
typedef union {
uint8_t raw;
struct {
bool enable : 1;
bool breathing : 1;
bool valid : 1;
uint8_t level : 5;
};
} backlight_config_t;
_Static_assert(sizeof(backlight_config_t) == sizeof(uint8_t), "Backlight EECONFIG out of spec.");
void backlight_init(void);
void backlight_toggle(void);
void backlight_enable(void);
void backlight_disable(void);
bool is_backlight_enabled(void);
void backlight_step(void);
void backlight_increase(void);
void backlight_decrease(void);
void backlight_level_noeeprom(uint8_t level);
void backlight_level(uint8_t level);
uint8_t get_backlight_level(void);
uint8_t eeconfig_read_backlight(void);
void eeconfig_update_backlight(uint8_t val);
void eeconfig_update_backlight_current(void);
void eeconfig_update_backlight_default(void);
// implementation specific
void backlight_init_ports(void);
void backlight_set(uint8_t level);
void backlight_task(void);
#ifdef BACKLIGHT_BREATHING
void backlight_toggle_breathing(void);
void backlight_enable_breathing(void);
void backlight_disable_breathing(void);
bool is_backlight_breathing(void);
void breathing_period_set(uint8_t value);
uint8_t get_breathing_period(void);
void breathing_period_default(void);
void breathing_period_inc(void);
void breathing_period_dec(void);
void breathing_toggle(void);
// implementation specific
void breathing_enable(void);
void breathing_disable(void);
bool is_breathing(void);
void breathing_pulse(void);
#endif
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