130 lines
2.7 KiB
C
130 lines
2.7 KiB
C
/*
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Copyright 2014 Ralf Schmitt <ralf@bunkertor.net>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <avr/io.h>
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#include "backlight.h"
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/* Backlight pin configuration
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*
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* FN1 PB0 (low)
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* FN2 PB5 (low)
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* FN3 PB4 (low)
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* FN4 PD7 (low)
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* REAR PD6 (high)
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* NUMPAD PB2 (high)
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* NUMLOCK PB1 (low)
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*/
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void backlight_init_ports() {
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DDRB |= (1<<0) | (1<<1) | (1<<2) | (1<<4) | (1<<5);
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DDRD |= (1<<6) | (1<<7);
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backlight_disable_numlock();
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}
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void backlight_set(uint8_t level) {
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(level & BACKLIGHT_FN1) ? backlight_enable_fn1() : backlight_disable_fn1();
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(level & BACKLIGHT_FN2) ? backlight_enable_fn2() : backlight_disable_fn2();
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(level & BACKLIGHT_FN3) ? backlight_enable_fn3() : backlight_disable_fn3();
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(level & BACKLIGHT_FN4) ? backlight_enable_fn4() : backlight_disable_fn4();
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(level & BACKLIGHT_NUMPAD) ? backlight_enable_numpad() : backlight_disable_numpad();
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(level & BACKLIGHT_REAR) ? backlight_enable_rear() : backlight_disable_rear();
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}
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void backlight_enable_fn1() {
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PORTB &= ~(1<<0);
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}
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void backlight_disable_fn1() {
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PORTB |= (1<<0);
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}
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void backlight_invert_fn1() {
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PORTB ^= (1<<0);
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}
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void backlight_enable_fn2() {
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PORTB &= ~(1<<5);
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}
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void backlight_disable_fn2() {
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PORTB |= (1<<5);
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}
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void backlight_invert_fn2() {
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PORTB ^= (1<<5);
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}
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void backlight_enable_fn3() {
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PORTB &= ~(1<<4);
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}
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void backlight_disable_fn3() {
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PORTB |= (1<<4);
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}
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void backlight_invert_fn3() {
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PORTB ^= (1<<4);
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}
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void backlight_enable_fn4() {
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PORTD &= ~(1<<7);
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}
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void backlight_disable_fn4() {
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PORTD |= (1<<7);
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}
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void backlight_invert_fn4() {
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PORTD ^= (1<<7);
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}
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void backlight_enable_numpad() {
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PORTB |= (1<<2);
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}
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void backlight_disable_numpad() {
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PORTB &= ~(1<<2);
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}
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void backlight_invert_numpad() {
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PORTB ^= (1<<2);
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}
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void backlight_enable_numlock() {
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PORTB &= ~(1<<1);
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}
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void backlight_disable_numlock() {
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PORTB |= (1<<1);
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}
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void backlight_invert_numlock() {
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PORTB ^= (1<<1);
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}
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void backlight_enable_rear() {
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PORTD |= (1<<6);
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}
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void backlight_disable_rear() {
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PORTD &= ~(1<<6);
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}
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void backlight_invert_rear() {
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PORTD ^= (1<<6);
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}
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