qmk_firmware/keyboards/leafcutterlabs/bigknob/keymaps/default/keymap.c

/* Copyright 2021 Craig Gardner 
  * 
  * 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

#define _MAIN 0

void encoder_update_user(uint8_t index, bool clockwise) {
  if (index == 0) { 
    if (clockwise) {
      tap_code(KC_VOLU);
    } else {
      tap_code(KC_VOLD);
    }
  } 
}

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = { //buttion closest to usb is first
  [_MAIN] = LAYOUT(
     KC_MUTE, KC_MEDIA_PREV_TRACK, KC_MEDIA_PLAY_PAUSE, KC_MEDIA_STOP, KC_MNXT
  )
};