1
0
This repo is archived. You can view files and clone it, but cannot push or open issues or pull requests.
tmk_keyboard_custom/keyboard/kimera/backlight.c
2015-09-23 22:47:25 +09:00

107 行
2.4 KiB
C

/*
Copyright 2014 Kai Ryu <kai1103@gmail.com>
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 <avr/io.h>
#include <avr/interrupt.h>
#include <avr/pgmspace.h>
#include "backlight.h"
#include "breathing_led.h"
#include "kimera.h"
#ifdef BACKLIGHT_ENABLE
void backlight_enable(void);
void backlight_disable(void);
inline void backlight_set_raw(uint8_t raw);
static const uint8_t backlight_table[] PROGMEM = {
0, 16, 128, 255
};
/* Backlight pin configuration
* LED4: PB6 (D10) OC1B
*/
void backlight_enable(void)
{
// Turn on PWM
LED4_DDR |= (1<<LED4_BIT);
cli();
TCCR1A |= ((1<<WGM10) | (1<<COM1B1));
TCCR1B |= ((1<<CS11) | (1<<CS10));
sei();
}
void backlight_disable(void)
{
// Turn off PWM
LED4_DDR &= ~(1<<LED4_BIT);
cli();
TCCR1A &= ~((1<<WGM10) | (1<<COM1B1));
TCCR1B &= ~((1<<CS11) | (1<<CS10));
sei();
LED4_OCR = 0;
}
void backlight_set(uint8_t level)
{
#ifdef BREATHING_LED_ENABLE
switch (level) {
case 1:
case 2:
case 3:
backlight_enable();
breathing_led_disable();
backlight_set_raw(pgm_read_byte(&backlight_table[level]));
break;
case 4:
case 5:
case 6:
backlight_enable();
breathing_led_enable();
breathing_led_set_duration(6 - level);
break;
case 0:
default:
breathing_led_disable();
backlight_disable();
break;
}
#else
if (level > 0) {
backlight_enable();
backlight_set_raw(pgm_read_byte(&backlight_table[level]));
}
else {
backlight_disable();
}
#endif
}
#ifdef BREATHING_LED_ENABLE
void breathing_led_set_raw(uint8_t raw)
{
backlight_set_raw(raw);
}
#endif
inline void backlight_set_raw(uint8_t raw)
{
LED4_OCR = raw;
}
#endif