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/*
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 "backlight.h"
/* Backlight pin configuration
*
* Alphas PB1 (high)
* Numeric PB2 (high)
* Mod+Num PB3 (high)
* Backside PD6 (high)
* TopRight PD7 (low)
* F-Row PE6 (high)
*/
void backlight_set(uint8_t level)
{
// Set as output.
DDRB |= (1<<1) | (1<<2) | (1<<3);
DDRD |= (1<<6) | (1<<7);
DDRE |= (1<<6);
if (level & BACKLIGHT_ALPHA)
{
PORTB |= (1<<1);
}
else
{
PORTB &= ~(1<<1);
}
if (level & BACKLIGHT_NUMERIC)
{
PORTB |= (1<<2);
}
else
{
PORTB &= ~(1<<2);
}
if (level & BACKLIGHT_MODNUM)
{
PORTB |= (1<<3);
}
else
{
PORTB &= ~(1<<3);
}
if (level & BACKLIGHT_BACKSIDE)
{
PORTD |= (1<<6);
}
else
{
PORTD &= ~(1<<6);
}
if (level & BACKLIGHT_TOPRIGHT)
{
PORTD &= ~(1<<7);
}
else
{
PORTD |= (1<<7);
}
if (level & BACKLIGHT_FROW)
{
PORTE |= (1<<6);
}
else
{
PORTE &= ~(1<<6);
}
}
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