qmk-firmware/keyboard/lightsaber/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
 *
 * Caps      PB0 (low)
 * NumLock   PB4 (low)
 *
 */
void led_set(uint8_t usb_led)
{
    // Set as output.
    DDRB |= (1<<0) | (1<<4);

    if (usb_led & (1<<USB_LED_CAPS_LOCK))
    {
        // Output low.
        PORTB &= ~(1<<0);
    }
    else
    {
        // Output high.
        PORTB |= (1<<0);
    }

    if (usb_led & (1<<USB_LED_NUM_LOCK))
    {
        // Output low.
        PORTB &= ~(1<<4);
    }
    else
    {
        // Output high.
        PORTB |= (1<<4);
    }
}