text: #include QMK_KEYBOARD_H
  #include "debug.h"
  #include "action_layer.h"
  
  #define BASE 0 // default layer
  #define SYMB 1 // symbols
  #define MDIA 2 // media keys
  
  const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  /* Keymap 0: Basic layer
   *
   * ,--------------------------------------------------.           ,-----------------------------------------------------.
   * |   Grv  |   1  |   2  |   3  |   4  |   5  | Del  |           |Backspace|   6  |   7  |   8  |   9  |   0  |   \    |
   * |--------+------+------+------+------+-------------|           |---------+------+------+------+------+------+--------|
   * |   Tab  |   '  |   ,  |   .  |   P  |   Y  |  L1  |           |  L1     |   F  |   G  |   C  |   R  |   L  |   /    |
   * |--------+------+------+------+------+------|      |           |         |------+------+------+------+------+--------|
   * |Ctrl/Esc|   A  |   O  |   E  |   U  |   I  |------|           |---------|   D  |   H  |   T  |   N  |S / L2|   -    |
   * |--------+------+------+------+------+------| Hyper|           | Meh     |------+------+------+------+------+--------|
   * | LShift |:/Ctrl|   Q  |   J  |   K  |   X  |      |           |         |   B  |   M  |   W  |   V  |Z/Ctrl| RShift |
   * `--------+------+------+------+------+-------------'           `----------------+------+------+------+------+--------'
   *   | Ctrl | LGui |  Alt | Left | Right|                                          |  Up  | Down |   [  |   ]  |  =   |
   *   `----------------------------------'                                          `----------------------------------'
   *                                        ,--------------.       ,-------------.
   *                                        | AltShf| LGui |       | Alt  | ~L1  |
   *                                 ,------|-------|------|       |------+--------+------.
   *                                 |      |       | Home |       | PgUp |        |      |
   *                                 | Space|Backsp |------|       |------|  Enter |Space |
   *                                 |      |ace    | End  |       | PgDn |        |      |
   *                                 `---------------------'       `----------------------'
   */
  // If it accepts an argument (i.e, is a function), it doesn't need KC_.
  // Otherwise, it needs KC_*
  [BASE] = LAYOUT_ergodox(  // layer 0 : default
          // left hand
          KC_GRV,         KC_1,           KC_2,    KC_3,   KC_4,   KC_5,   KC_DELT,
          KC_TAB,         KC_QUOT,        KC_COMM, KC_DOT, KC_P,   KC_Y,   TG(1),
          CTL_T(KC_ESC),  KC_A,           KC_O,    KC_E,   KC_U,   KC_I,
          KC_LSFT,        CTL_T(KC_SCLN), KC_Q,    KC_J,   KC_K,   KC_X,   ALL_T(KC_NO),
          KC_LCTL,  KC_LGUI,  KC_LALT,  KC_LEFT, KC_RGHT,
                                                LALT(KC_LSFT),  KC_LGUI,
                                                                KC_HOME,
                                                 KC_SPC,KC_BSPC,KC_END,
          // right hand
               KC_BSPC,     KC_6,   KC_7,   KC_8,   KC_9,   KC_0,             KC_BSLS,
               TG(1),       KC_F,   KC_G,   KC_C,   KC_R,   KC_L,             KC_SLSH,
                            KC_D,   KC_H,   KC_T,   KC_N,   LT(MDIA, KC_S),   KC_MINS,
               MEH_T(KC_NO),KC_B,   KC_M,   KC_W,   KC_V,   CTL_T(KC_Z),      KC_RSFT,
                                    KC_UP,  KC_DOWN,KC_LBRC,KC_RBRC,          KC_EQL,
               KC_LALT,        KC_FN1,
               KC_PGUP,
               KC_PGDN,KC_ENT, KC_SPC
      ),
  /* Keymap 1: Symbol Layer
   *
   * ,--------------------------------------------------.           ,--------------------------------------------------.
   * |        |  F1  |  F2  |  F3  |  F4  |  F5  |      |           |      |  F6  |  F7  |  F8  |  F9  |  F10 |   F11  |
   * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
   * |        |   !  |   @  |   {  |   }  |   |  |      |           |      |   Up |   7  |   8  |   9  |   *  |   F12  |
   * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
   * |        |   #  |   $  |   (  |   )  |   `  |------|           |------| Down |   4  |   5  |   6  |   +  |        |
   * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
   * |        |   %  |   ^  |   [  |   ]  |   ~  |      |           |      |   &  |   1  |   2  |   3  |   \  |        |
   * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
   *   |      |      |      |      |      |                                       |      |    . |   0  |   =  |      |
   *   `----------------------------------'                                       `----------------------------------'
   *                                        ,-------------.       ,-------------.
   *                                        |      |      |       |      |      |
   *                                 ,------|------|------|       |------+------+------.
   *                                 |      |      |      |       |      |      |      |
   *                                 |      |      |------|       |------|      |      |
   *                                 |      |      |      |       |      |      |      |
   *                                 `--------------------'       `--------------------'
   */
  // SYMBOLS
  [SYMB] = LAYOUT_ergodox(
         // left hand
         KC_TRNS,KC_F1,  KC_F2,  KC_F3,  KC_F4,  KC_F5,  KC_TRNS,
         KC_TRNS,KC_EXLM,KC_AT,  KC_LCBR,KC_RCBR,KC_PIPE,KC_TRNS,
         KC_TRNS,KC_HASH,KC_DLR, KC_LPRN,KC_RPRN,KC_GRV,
         KC_TRNS,KC_PERC,KC_CIRC,KC_LBRC,KC_RBRC,KC_TILD,KC_TRNS,
         KC_TRNS,KC_TRNS,KC_TRNS,KC_TRNS,KC_TRNS,
                                         KC_TRNS,KC_TRNS,
                                                 KC_TRNS,
                                 KC_TRNS,KC_TRNS,KC_TRNS,
         // right hand
         KC_TRNS, KC_F6,   KC_F7,  KC_F8,   KC_F9,   KC_F10,  KC_F11,
         KC_TRNS, KC_UP,   KC_7,   KC_8,    KC_9,    KC_ASTR, KC_F12,
                  KC_DOWN, KC_4,   KC_5,    KC_6,    KC_PLUS, KC_TRNS,
         KC_TRNS, KC_AMPR, KC_1,   KC_2,    KC_3,    KC_BSLS, KC_TRNS,
                           KC_TRNS,KC_DOT,  KC_0,    KC_EQL,  KC_TRNS,
         KC_TRNS, KC_TRNS,
         KC_TRNS,
         KC_TRNS, KC_TRNS, KC_TRNS
  ),
  /* Keymap 2: Media and mouse keys
   *
   * ,--------------------------------------------------.           ,--------------------------------------------------.
   * |        |      |      |      |      |      |      |           |      |      |      |      |      |      |        |
   * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
   * |        |      |      | MsUp |      |      |      |           |      |      |      |      |      |      |        |
   * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
   * |        |      |MsLeft|MsDown|MsRght|      |------|           |------|      |      |      |      |      |  Play  |
   * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
   * |        |      |      |      |      |      |      |           |      |      |      | Prev | Next |      |        |
   * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
   *   |      |      |      | Lclk | Rclk |                                       |VolUp |VolDn | Mute |      |      |
   *   `----------------------------------'                                       `----------------------------------'
   *                                        ,-------------.       ,-------------.
   *                                        |      |      |       |      |      |
   *                                 ,------|------|------|       |------+------+------.
   *                                 |      |      |      |       |      |      |Brwser|
   *                                 |      |      |------|       |------|      |Back  |
   *                                 |      |      |      |       |      |      |      |
   *                                 `--------------------'       `--------------------'
   */
  // MEDIA AND MOUSE
  LAYOUT_ergodox(
         KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
         KC_TRNS, KC_TRNS, KC_TRNS, KC_MS_U, KC_TRNS, KC_TRNS, KC_TRNS,
         KC_TRNS, KC_TRNS, KC_MS_L, KC_MS_D, KC_MS_R, KC_TRNS,
         KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
         KC_TRNS, KC_TRNS, KC_TRNS, KC_BTN1, KC_BTN2,
                                             KC_TRNS, KC_TRNS,
                                                      KC_TRNS,
                                    KC_TRNS, KC_TRNS, KC_TRNS,
      // right hand
         KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
         KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
                   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_MPLY,
         KC_TRNS,  KC_TRNS, KC_TRNS, KC_MPRV, KC_MNXT, KC_TRNS, KC_TRNS,
                            KC_VOLU, KC_VOLD, KC_MUTE, KC_TRNS, KC_TRNS,
         KC_TRNS, KC_TRNS,
         KC_TRNS,
         KC_TRNS, KC_TRNS, KC_WBAK
  ),
  };
  
  const uint16_t PROGMEM fn_actions[] = {
      [1] = ACTION_LAYER_TAP_TOGGLE(SYMB)                // FN1 - Momentary Layer 1 (Symbols)
  };
  
  const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
  {
    // MACRODOWN only works in this function
        switch(id) {
          case 0:
          if (record->event.pressed) {
            register_code(KC_RSFT);
          } else {
            unregister_code(KC_RSFT);
          }
          break;
        }
      return MACRO_NONE;
  };
  
  // Runs just one time when the keyboard initializes.
  void matrix_init_user(void) {
  
  };
  
  // Runs constantly in the background, in a loop.
  void matrix_scan_user(void) {
  
      uint8_t layer = biton32(layer_state);
  
      ergodox_board_led_off();
      ergodox_right_led_1_off();
      ergodox_right_led_2_off();
      ergodox_right_led_3_off();
      switch (layer) {
        // TODO: Make this relevant to the ErgoDox EZ.
          case 1:
              ergodox_right_led_1_on();
              break;
          case 2:
              ergodox_right_led_2_on();
              break;
          default:
              // none
              break;
      }
  
  };
  