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- /*
- Copyright 2014 Ralf Schmitt <[email protected]>
-
- 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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