src/dusi/backlight.h

   1 /* Copyright (C) 2008 Sean D'Epagnier <sean@depagnier.com>
   2  *
   3  * This Program is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU General Public
   5  * License as published by the Free Software Foundation; either
   6  * version 3 of the License, or (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  16  *
  17  * For more information on the GPL, please go to:
  18  * http://www.gnu.org/copyleft/gpl.html
  19  */
  20
  21 #define BACKLIGHT_DDR DDRF
  22 #define BACKLIGHT_PORT PORTF
  23 #define BACKLIGHTWHITE PF2
  24 #define BACKLIGHTGREEN PF3
  25
  26 void backlight_set(uint8_t white, uint8_t green)
  27 {
  28     BACKLIGHT_DDR |= _BV(BACKLIGHTWHITE) | _BV(BACKLIGHTGREEN);
  29     if(white)
  30         BACKLIGHT_PORT &= ~_BV(BACKLIGHTWHITE);
  31     else
  32         BACKLIGHT_PORT |= _BV(BACKLIGHTWHITE);
  33
  34     if(green)
  35         BACKLIGHT_PORT &= ~_BV(BACKLIGHTGREEN);
  36     else
  37         BACKLIGHT_PORT |= _BV(BACKLIGHTGREEN);
  38 }