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tmk_keyboard_custom/keyboard/gh60/backlight.c

219 lines
4.5 KiB
C

/*
Copyright 2013,2014 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"
#ifdef SOFTPWM_LED_ENABLE
#include "softpwm_led.h"
#else
#include "breathing_led.h"
#endif
#ifdef BACKLIGHT_ENABLE
void backlight_enable(void);
void backlight_disable(void);
inline void backlight_set_raw(uint8_t raw);
#ifndef SOFTPWM_LED_ENABLE
#ifdef GH60_REV_CHN
#else
#define SOFTPWM_TIMER_TOP F_CPU/(256*64)
uint8_t softpwm_ocr = 0;
uint8_t softpwm_ocr_buff = 0;
#endif
#endif
static const uint8_t backlight_table[] PROGMEM = {
0, 16, 128, 255
};
/* Backlight pin configuration
* PWM: PB6 (Rev.CHN)
* GPIO: PF7 PF6 PF5 PF4 (Rev.B)
*/
void backlight_enable(void)
{
#ifdef SOFTPWM_LED_ENABLE
#if defined(GH60_REV_CHN)
DDRB |= (1<<PB6);
PORTB &= ~(1<<PB6);
#else
DDRF |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
PORTF |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
#endif
softpwm_led_enable();
#else
#if defined(GH60_REV_CHN)
// Turn on PWM
DDRB |= (1<<PB6);
cli();
TCCR1A |= ((1<<WGM10) | (1<<COM1B1));
TCCR1B |= ((1<<CS11) | (1<<CS10));
sei();
#else
DDRF |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
PORTF |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
cli();
TCCR1B |= (1<<WGM12);
TCCR1B |= (1<<CS10);
OCR1AH = (SOFTPWM_TIMER_TOP>>8)&0xff;
OCR1AL = SOFTPWM_TIMER_TOP&0xff;
TIMSK1 |= (1<<OCIE1A);
sei();
#endif
#endif
}
void backlight_disable(void)
{
#ifdef SOFTPWM_LED_ENABLE
softpwm_led_disable();
#if defined(GH60_REV_CHN)
DDRB &= ~(1<<PB6);
#else
DDRF &= ~(1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
#endif
#else
#if defined(GH60_REV_CHN)
// Turn off PWM
cli();
DDRB &= ~(1<<PB6);
TCCR1A &= ~( (1<<WGM10) | (1<<COM1B1) );
TCCR1B &= ~( (1<<CS11) | (1<<CS10) );
sei();
OCR1B = 0;
#else
DDRF &= ~(1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
cli();
TCCR1B &= ~(1<<WGM12);
TCCR1B &= ~(1<<CS10);
TIMSK1 &= ~(1<<OCIE1A);
sei();
OCR1A = 0;
#endif
#endif
}
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
}
#ifndef SOFTPWM_LED_ENABLE
#ifdef BREATHING_LED_ENABLE
void breathing_led_set_raw(uint8_t raw)
{
backlight_set_raw(raw);
}
#endif
#endif
inline void backlight_set_raw(uint8_t raw)
{
#ifdef SOFTPWM_LED_ENABLE
softpwm_led_set(raw);
#else
#if defined(GH60_REV_CHN)
OCR1B = raw;
#else
softpwm_ocr_buff = raw;
#endif
#endif
}
#ifdef SOFTPWM_LED_ENABLE
#ifndef LEDMAP_ENABLE
void softpwm_led_on(void)
{
#if defined(GH60_REV_CHN)
PORTB |= (1<<PB6);
#else
PORTF &= ~(1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
#endif
}
void softpwm_led_off(void)
{
#if defined(GH60_REV_CHN)
PORTB &= ~(1<<PB6);
#else
PORTF |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
#endif
}
#endif
#endif
#ifndef SOFTPWM_LED_ENABLE
#if defined(GH60_REV_CHN)
#else
ISR(TIMER1_COMPA_vect)
{
static uint8_t pwm = 0;
pwm++;
// LED on
if (pwm == 0) {
//PORTB |= (1<<PB6);
PORTF &= ~(1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
softpwm_ocr = softpwm_ocr_buff;
}
// LED off
if (pwm == softpwm_ocr) {
//PORTB &= ~(1<<PB6);
PORTF |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
}
}
#endif
#endif
#endif