qmk_firmware/keyboards/w1_at/w1_at.c

/* Copyright 2021 Yiancar-Designs
 *
 * 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 "quantum.h"

void led_init_ports(void) {
    // Set our LED pins as open drain outputs
    palSetLineMode(LED_CAPS_LOCK_PIN, PAL_MODE_OUTPUT_OPENDRAIN);
    palSetLineMode(LED_NUM_LOCK_PIN, PAL_MODE_OUTPUT_OPENDRAIN);
    palSetLineMode(LED_SCROLL_LOCK_PIN, PAL_MODE_OUTPUT_OPENDRAIN);
    palSetLineMode(LED_KANA_PIN, PAL_MODE_OUTPUT_OPENDRAIN);
    palSetLineMode(A14, PAL_MODE_OUTPUT_OPENDRAIN);
}

layer_state_t layer_state_set_kb(layer_state_t state) {
    writePin(A14, !layer_state_cmp(state, 1));
    return layer_state_set_user(state);
}