orphan/ghost_squid/led.c

   1 /*
   2 Copyright 2014 Ralf Schmitt <ralf@bunkertor.net>
   3
   4 This program is free software: you can redistribute it and/or modify
   5 it under the terms of the GNU General Public License as published by
   6 the Free Software Foundation, either version 2 of the License, or
   7 (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18 #include <avr/io.h>
  19 #include "stdint.h"
  20 #include "led.h"
  21
  22 /* LED pin configuration
  23  *
  24  * Scroll Lock  PB7
  25  * CAPS         PC6
  26  * NUMLOCK      PC5
  27  *
  28  */
  29 void led_set(uint8_t usb_led)
  30 {
  31     DDRB |= (1<<7);
  32     DDRC |= (1<<5) | (1<<6);
  33
  34     if (usb_led & (1<<USB_LED_CAPS_LOCK))
  35     {
  36         PORTC &= ~(1<<6);
  37     }
  38     else
  39     {
  40         PORTC |= (1<<6);
  41     }
  42
  43     if (usb_led & (1<<USB_LED_NUM_LOCK))
  44     {
  45         PORTC &= ~(1<<5);
  46     }
  47     else
  48     {
  49         PORTC |= (1<<5);
  50     }
  51
  52     if (usb_led & (1<<USB_LED_SCROLL_LOCK))
  53     {
  54         PORTB &= ~(1<<7);
  55     }
  56     else
  57     {
  58         PORTB |= (1<<7);
  59     }
  60 }