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tmk_keyboard_custom/keyboard/gh60/backlight.c
2014-04-08 18:02:20 +09:00

111 lines
2.7 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"
#if defined(GH60_REV_CHN)
static const uint8_t backlight_table[] PROGMEM = {
0, 16, 128, 255
};
/* Backlight pin configuration
* PWM: PB7
*/
void backlight_set(uint8_t level)
{
if (level > 0) {
// Turn on PWM
cli();
DDRB |= (1<<PB6);
TCCR1A |= ( (1<<WGM10) | (1<<COM1B1) );
TCCR1B |= ( (1<<CS11) | (1<<CS10) );
sei();
// Set PWM
OCR1B = pgm_read_byte(&backlight_table[level]);
}
else {
// Turn off PWM
cli();
DDRB &= ~(1<<PB6);
TCCR1A &= ~( (1<<WGM10) | (1<<COM1B1) );
TCCR1B &= ~( (1<<CS11) | (1<<CS10) );
sei();
// Set PWM
OCR1B = 0;
}
}
#elif #defined(GH60_REV_CNY)
static const uint8_t backlight_table[] PROGMEM = {
0, 16, 128, 255
};
void backlight_set(uint8_t level)
{
if (level > 0) {
led_matrix_disable();
for (uint8_t row = 0; row < LED_MATRIX_ROWS; row++) {
for (uint8_t col = 0; col < LED_MATRIX_COLS; col++) {
led_matrix_set_value(row, col, pgm_read_byte(&backlight_table[level]));
}
}
led_matrix_enable();
}
else {
led_matrix_disable();
}
}
#else
static const uint8_t backlight_table[] PROGMEM = {
0, 16, 128, 255
};
void backlight_set(uint8_t level)
{
if (level > 0) {
DDRF |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
PORTF |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
cli();
TIMSK1 |= ((1<<OCIE1A) | (1<<TOIE1));
TIFR1 |= (1<<TOV1);
sei();
OCR1A = pgm_read_byte(&backlight_table[level]);
}
else {
DDRF &= ~(1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
cli();
TIMSK1 |= ((1<<OCIE1A) | (1<<TOIE1));
TIFR1 |= (1<<TOV1);
sei();
OCR1A = 0;
}
}
ISR(TIMER1_COMPA_vect)
{
// LED off
PORTF |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
}
ISR(TIMER1_OVF_vect)
{
// LED on
PORTF &= ~(1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
}
#endif