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/*
Copyright 2014 Ralf Schmitt <ralf@bunkertor.net>
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 "backlight.h"
/* Backlight pin configuration
*
* FN1 PB0 (low)
* FN2 PB5 (low)
* FN3 PB4 (low)
* FN4 PD7 (low)
* REAR PD6 (high)
* NUMPAD PB2 (high)
* NUMLOCK PB1 (low)
*/
void backlight_init_ports() {
DDRB |= (1<<0) | (1<<1) | (1<<2) | (1<<4) | (1<<5);
DDRD |= (1<<6) | (1<<7);
backlight_disable_numlock();
}
void backlight_set(uint8_t level) {
(level & BACKLIGHT_FN1) ? backlight_enable_fn1() : backlight_disable_fn1();
(level & BACKLIGHT_FN2) ? backlight_enable_fn2() : backlight_disable_fn2();
(level & BACKLIGHT_FN3) ? backlight_enable_fn3() : backlight_disable_fn3();
(level & BACKLIGHT_FN4) ? backlight_enable_fn4() : backlight_disable_fn4();
(level & BACKLIGHT_NUMPAD) ? backlight_enable_numpad() : backlight_disable_numpad();
(level & BACKLIGHT_REAR) ? backlight_enable_rear() : backlight_disable_rear();
}
void backlight_enable_fn1() {
PORTB &= ~(1<<0);
}
void backlight_disable_fn1() {
PORTB |= (1<<0);
}
void backlight_invert_fn1() {
PORTB ^= (1<<0);
}
void backlight_enable_fn2() {
PORTB &= ~(1<<5);
}
void backlight_disable_fn2() {
PORTB |= (1<<5);
}
void backlight_invert_fn2() {
PORTB ^= (1<<5);
}
void backlight_enable_fn3() {
PORTB &= ~(1<<4);
}
void backlight_disable_fn3() {
PORTB |= (1<<4);
}
void backlight_invert_fn3() {
PORTB ^= (1<<4);
}
void backlight_enable_fn4() {
PORTD &= ~(1<<7);
}
void backlight_disable_fn4() {
PORTD |= (1<<7);
}
void backlight_invert_fn4() {
PORTD ^= (1<<7);
}
void backlight_enable_numpad() {
PORTB |= (1<<2);
}
void backlight_disable_numpad() {
PORTB &= ~(1<<2);
}
void backlight_invert_numpad() {
PORTB ^= (1<<2);
}
void backlight_enable_numlock() {
PORTB &= ~(1<<1);
}
void backlight_disable_numlock() {
PORTB |= (1<<1);
}
void backlight_invert_numlock() {
PORTB ^= (1<<1);
}
void backlight_enable_rear() {
PORTD |= (1<<6);
}
void backlight_disable_rear() {
PORTD &= ~(1<<6);
}
void backlight_invert_rear() {
PORTD ^= (1<<6);
}
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