qmk_firmware_custom/keyboards/kitten_paw/led.c

/*
  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 "stdint.h"
#include "led.h"

/* LED pin configuration
 *
 * Scroll Lock  PC5
 * Caps Lock    PC6
 * Num Lock     PB7
 *
 */
void led_set(uint8_t usb_led) {
  DDRB |= (1<<7);
  DDRC |= (1<<5) | (1<<6);
  
  if (usb_led & (1<<USB_LED_CAPS_LOCK))
    PORTC &= ~(1<<6);
  else
    PORTC |=  (1<<6);
  
  if (usb_led & (1<<USB_LED_NUM_LOCK))
    PORTB &= ~(1<<7);
  else
    PORTB |=  (1<<7);
  
  if (usb_led & (1<<USB_LED_SCROLL_LOCK))
    PORTC &= ~(1<<5);
  else
    PORTC |=  (1<<5);
}