qmk-firmware/keyboards/handwired/frankie_macropad/keymaps/default/keymap.c

/* Copyright 2021 Eric Wood
 *
 * 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 QMK_KEYBOARD_H

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
    LAYOUT(
                 KC_HOME, KC_MUTE,
        KC_BRID, KC_BRIU, KC_NO, KC_NO,
        KC_MPRV, KC_MPLY, KC_MNXT, KC_NO
    ),
};

bool encoder_update_user(uint8_t index, bool clockwise) {
    if (index == 0) { /* First encoder */
        if (clockwise) {
            tap_code(KC_PGUP);
        } else {
            tap_code(KC_PGDN);
        }
    } else if (index == 1) { /* Second encoder */
        if (clockwise) {
            tap_code(KC_VOLU);
        } else {
            tap_code(KC_VOLD);
        }
    }
    return true;
}