qmk_firmware/keyboards/tkc1800/tkc1800.c

/* Copyright 2017 Mathias Andersson <wraul@dbox.se>
 *
 * 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 "tkc1800.h"
#include "led.h"

void matrix_init_kb(void) {
    // put your keyboard start-up code here
    // runs once when the firmware starts up
    led_init_ports();
}

void led_init_ports(void) {
	DDRD |= (1<<2) | (1<<3) | (1<<4); // OUT
	DDRB |= (1<<7); // OUT
	PORTB |= (1<<7);
}

void led_set_kb(uint8_t usb_led) {
    if (usb_led & (1<<USB_LED_NUM_LOCK)) {
        // Turn numlock on
		PORTD |= (1<<2);
    } else {
        // Turn numlock off
	    PORTD &= ~(1<<2);
    }
	if (usb_led & (1<<USB_LED_CAPS_LOCK)) {
        // Turn capslock on
		PORTD |= (1<<3);
    } else {
        // Turn capslock off
		PORTD &= ~(1<<3);
    }
	if (usb_led & (1<<USB_LED_SCROLL_LOCK)) {
        // Turn scrolllock on
	    PORTD |= (1<<4);
    } else {
        // Turn scrolllock off
		PORTD &= ~(1<<4);
    }
}