[Keymap] Added mverteuil keymaps and userspace common code (#7876)

* Added mverteuil content

- Userspace
- Knops keymap
- Preonic keymaps

* Simplified and replaced some magic numbers

* Convert tabs to spaces

* Clean up LED handling, better animation, better layer init

* Use get_highest_layer per @drashna suggestion

* Reorder prototypes/reformat

* Simplified/more expessive and fixed initial layer LED

* Remove changes to git ignored files

1 files changed, 508 insertions, 0 deletions

diff --git a/keyboards/preonic/keymaps/mverteuil/keymap.c b/keyboards/preonic/keymaps/mverteuil/keymap.c
new file mode 100644
index 0000000000..621d60be6a
--- /dev/null
+++ b/keyboards/preonic/keymaps/mverteuil/keymap.c
@@ -0,0 +1,508 @@
+/* Copyright 2015-2017 Jack Humbert, 2019 Matthew de Verteuil
+ *
+ * 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
+#include "muse.h"
+#include "mverteuil.h"
+
+/* TapDance Aliases */
+#define TD_LBRK TD(TD_BRACKETS_LEFT)
+#define TD_RBRK TD(TD_BRACKETS_RIGHT)
+#define TD_CLES TD(TD_CONTROL_ESCAPE)
+#define TD_NPFR TD(TD_NUMPAD_FUNCTIONROW)
+#define TD_PLEQ TD(TD_PLUS_EQUALS)
+#define TD_SCOL TD(TD_SEMICOLON_COLON)
+#define TD_SLQU TD(TD_SLASH_QUESTION)
+#define TD_SQDQ TD(TD_QUOTE_DOUBLEQUOTE)
+#define TD_USMI TD(TD_UNDERSCORE_MINUS)
+
+/* Sentinel value for invalid tap dance exit */
+#define TAP_DANCE_NO_MATCH 64
+
+enum preonic_layers {
+    _QWERTY,
+    _FUNCTIONROW,
+    _NUMPAD,
+    _LOWER,
+    _RAISE,
+    _ADJUST,
+};
+
+enum preonic_keycodes {
+    QWERTY = SAFE_RANGE,
+    NUMPAD,
+    LOWER,
+    RAISE,
+    BACKLIT,
+};
+
+enum tapdance_keycodes {
+    TD_BRACKETS_LEFT,
+    TD_BRACKETS_RIGHT,
+    TD_CONTROL_ESCAPE,
+    TD_NUMPAD_FUNCTIONROW,
+    TD_PLUS_EQUALS,
+    TD_QUOTE_DOUBLEQUOTE,
+    TD_SEMICOLON_COLON,
+    TD_SLASH_QUESTION,
+    TD_UNDERSCORE_MINUS,
+};
+
+typedef enum {
+    SINGLE_TAP,
+    SINGLE_HOLD,
+    DOUBLE_TAP,
+    DOUBLE_HOLD,
+    TRIPLE_TAP,
+    TRIPLE_HOLD,
+} t_tap_state;
+
+typedef struct {
+    t_tap_state left_brackets;
+    t_tap_state numpad_funcrow;
+    t_tap_state right_brackets;
+} t_tap;
+
+t_tap_state get_tapdance_state(qk_tap_dance_state_t *state);
+
+void td_numpad_funcrow_finished(qk_tap_dance_state_t *state, void *user_data);
+void td_numpad_funcrow_reset(qk_tap_dance_state_t *state, void *user_data);
+void td_brackets_left_finished(qk_tap_dance_state_t *state, void *user_data);
+void td_brackets_left_reset(qk_tap_dance_state_t *state, void *user_data);
+void td_brackets_right_finished(qk_tap_dance_state_t *state, void *user_data);
+void td_brackets_right_reset(qk_tap_dance_state_t *state, void *user_data);
+
+/* Tap Dance Definitions */
+qk_tap_dance_action_t tap_dance_actions[] = {
+    /* Tap once for left parenthesis, twice for left bracket, thrice for left brace */
+    [TD_BRACKETS_LEFT] = ACTION_TAP_DANCE_FN_ADVANCED(NULL, td_brackets_left_finished, td_brackets_left_reset),
+    /* Tap once for right parenthesis, twice for right bracket, thrice for right brace */
+    [TD_BRACKETS_RIGHT] = ACTION_TAP_DANCE_FN_ADVANCED(NULL, td_brackets_right_finished, td_brackets_right_reset),
+    /* Tap once for control, twice for escape */
+    [TD_CONTROL_ESCAPE] = ACTION_TAP_DANCE_DOUBLE(KC_LCTRL, KC_ESCAPE),
+    /* Tap once for plus, twice for equals */
+    [TD_PLUS_EQUALS] = ACTION_TAP_DANCE_DOUBLE(KC_PLUS, KC_EQUAL),
+    /* Hold for numpad, tap twice to toggle function row, double hold for temporary function row */
+    [TD_NUMPAD_FUNCTIONROW] = ACTION_TAP_DANCE_FN_ADVANCED(NULL, td_numpad_funcrow_finished, td_numpad_funcrow_reset),
+    /* Tap once for single quote, twice for double quote */
+    [TD_QUOTE_DOUBLEQUOTE] = ACTION_TAP_DANCE_DOUBLE(KC_QUOTE, KC_DOUBLE_QUOTE),
+    /* Tap once for semicolon, twice for colon */
+    [TD_SEMICOLON_COLON] = ACTION_TAP_DANCE_DOUBLE(KC_SCOLON, KC_COLON),
+    /* Tap once for slash, twice for question mark */
+    [TD_SLASH_QUESTION] = ACTION_TAP_DANCE_DOUBLE(KC_SLASH, KC_QUESTION),
+    /* Tap once for underscore, twice for minus */
+    [TD_UNDERSCORE_MINUS] = ACTION_TAP_DANCE_DOUBLE(KC_UNDERSCORE, KC_MINUS),
+};
+
+/* clang-format off */
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Qwerty
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  | _  - | +  = | Bksp |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | '  " |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |CtlEsc|   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  | ;  : | Enter|
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |  Up  | GUI  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |NP FRw| Ctrl | Alt  | GUI  |Lower |    Space    |Raise | /  ? | Left | Down |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_QWERTY] = LAYOUT_preonic_1x2uC (
+  KC_GRV,  KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, TD_USMI, TD_PLEQ, KC_BSPC,
+  KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    TD_SQDQ,
+  TD_CLES, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    TD_SCOL, KC_ENT,
+  KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_UP,   KC_RGUI,
+  TD_NPFR, KC_LCTL, KC_LALT, KC_LGUI, LOWER,        KC_SPC,      RAISE,   TD_SLQU, KC_LEFT, KC_DOWN, KC_RGHT
+),
+
+/* Function Row
+ * ,-----------------------------------------------------------------------------------.
+ * |  F12 |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |  F7  |  F8  |  F9  |  F10 |  F11 |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |      |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      |      |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_FUNCTIONROW] = LAYOUT_preonic_1x2uC (
+  KC_F12,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+  _______, _______, _______, _______, _______,      _______,     _______, _______, _______, _______, _______
+),
+
+/* Numpad
+ * ,------+------+------+------+------+------|------+------+------+------+------+------.
+ * |      |      |      |      |      |      |      | Tab  |  /   |  *   |Bksp  |      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |  7   |  8   |  9   |  -   |      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |  4   |  5   |  6   |  +   |      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |  1   |  2   |  3   |Enter |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      |  0   |  .   |Enter |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_NUMPAD] = LAYOUT_preonic_1x2uC (
+  _______, _______, _______, _______, _______, _______, _______, KC_TAB,  KC_SLSH, KC_PAST, KC_BSPC, _______,
+  _______, _______, _______, _______, _______, _______, _______, KC_KP_7, KC_KP_8, KC_KP_9, KC_PMNS, _______,
+  _______, _______, _______, _______, _______, _______, _______, KC_KP_4, KC_KP_5, KC_KP_6, KC_PPLS, _______,
+  _______, _______, _______, _______, _______, _______, _______, KC_KP_1, KC_KP_2, KC_KP_3, KC_PENT, _______,
+  _______, _______, _______, _______, _______,      _______,     _______, KC_KP_0, KC_PDOT, KC_PENT, _______
+),
+
+/* Lower
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  |  Del |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      | Vol+ |      |      |      |      |      |      |      | Play |      |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      | Prev | Vol- | Next |      |      |   ?  |   _  |   +  |      |      |      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      | Mute |      |      | PgUp |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |RGBmod|      |      |      |      |             |      |   \  | Home | PgDn | End  |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_LOWER] = LAYOUT_preonic_1x2uC (
+  KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL,
+  _______, _______, KC_VOLU, _______, _______, _______, _______, _______, _______, _______, KC_MPLY, _______,
+  _______, KC_MPRV, KC_VOLD, KC_MNXT, _______, _______, KC_QUES, KC_UNDS, KC_PLUS, _______, _______, _______,
+  _______, _______, _______, _______, _______, _______, _______, KC_MUTE, _______, _______, KC_PGUP, _______,
+  _______, _______, _______, _______, _______,     _______,      _______, KC_BSLS, KC_HOME, KC_PGDN, KC_END
+),
+
+/* Raise
+ * ,-----------------------------------------------------------------------------------.
+ * |   ~  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |  F7  |  F8  |  F9  |  F10 |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |      |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      | [ { (| ) } ]|      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      |   |  |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_RAISE] = LAYOUT_preonic_1x2uC (
+  KC_TILD, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  _______,
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, TD_LBRK, TD_RBRK, _______,
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+  _______, _______, _______, _______, _______,      _______,     _______, KC_PIPE, _______, _______, _______
+),
+
+/* Adjust (Lower + Raise)
+ * ,-----------------------------------------------------------------------------------.
+ * |AudTog|XXXXXX|XXXXXX|XXXXXX|XXXXXX|XXXXXX|XXXXXX|XXXXXX|XXXXXX|XXXXXX| Debug| Reset|
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |ClkTog|ClkFq-|ClkFq+|XXXXXX|XXXXXX|XXXXXX|XXXXXX|XXXXXX|XXXXXX|XXXXXX|TermOn|TermOf|
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |MusTog|Voice- Voice+|XXXXXX|XXXXXX|XXXXXX|XXXXXX|XXXXXX|XXXXXX|XXXXXX|AGnorm|AGswap|
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |MidTog|Rplain|Rbreat|Rrainb|Rswirl|Rsnake|Rkridr|Rxmas |Rgrad |RGBtst|XXXXXX|Shift |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |RGBmod|RGBhue|RBGsat|RGBval|      |             |      |XXXXXX|XXXXXX|XXXXXX|XXXXXX|
+ * `-----------------------------------------------------------------------------------'
+ */
+[_ADJUST] = LAYOUT_preonic_1x2uC (
+  AU_TOG,  XXXXXXX, XXXXXXX, XXXXXXX, RGB_HUI, RGB_HUD, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, DEBUG,   RESET,
+  CK_TOGG, CK_DOWN, CK_UP,   XXXXXXX, RGB_SAI, RGB_SAD, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, TERM_ON, TERM_OFF,
+  MU_TOG,  MUV_DE,  MUV_IN,  XXXXXXX, RGB_VAI, RGB_VAD, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, AG_NORM, AG_SWAP,
+  MI_TOG,  RGB_M_P, RGB_M_B, RGB_M_R,RGB_M_SW,RGB_M_SN, RGB_M_K, RGB_M_X, RGB_M_G, RGB_M_T, RGB_SPI, KC_LSHIFT,
+  XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, _______,      RGB_TOG,     _______, XXXXXXX,RGB_RMOD, RGB_SPD, RGB_MOD
+)
+
+};
+/* clang-format on */
+
+float s_audio_on[][2]    = AUDIO_ON_SONG;
+float s_layer_lower[][2] = LAYER_LOWER_SONG;
+float s_layer_raise[][2] = LAYER_RAISE_SONG;
+
+void audio_on_user() { PLAY_SONG(s_audio_on); };
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+        case LOWER:
+            if (record->event.pressed) {
+                layer_on(_LOWER);
+                update_tri_layer(_LOWER, _RAISE, _ADJUST);
+                PLAY_SONG(s_layer_lower);
+            } else {
+                layer_off(_LOWER);
+                update_tri_layer(_LOWER, _RAISE, _ADJUST);
+            }
+            return false;
+            break;
+        case RAISE:
+            if (record->event.pressed) {
+                layer_on(_RAISE);
+                update_tri_layer(_LOWER, _RAISE, _ADJUST);
+                PLAY_SONG(s_layer_raise);
+            } else {
+                layer_off(_RAISE);
+                update_tri_layer(_LOWER, _RAISE, _ADJUST);
+            }
+            return false;
+            break;
+        case BACKLIT:
+            if (record->event.pressed) {
+                register_code(KC_RSFT);
+#ifdef BACKLIGHT_ENABLE
+                backlight_step();
+#endif
+#ifdef __AVR__
+                writePinLow(E6);
+#endif
+            } else {
+                unregister_code(KC_RSFT);
+#ifdef __AVR__
+                writePinHigh(E6);
+#endif
+            }
+            return false;
+            break;
+    }
+    return true;
+};
+
+/* Global TapDance State */
+static t_tap qk_tap_state = {
+    .left_brackets  = 0,
+    .numpad_funcrow = 0,
+    .right_brackets = 0,
+};
+
+float s_functionrow_on[][2]  = LAYER_FUNCROW_ON_SONG;
+float s_functionrow_off[][2] = LAYER_FUNCROW_OFF_SONG;
+float s_numpad_toggle[][2]   = LAYER_NMPAD_SONG;
+
+t_tap_state get_tapdance_state(qk_tap_dance_state_t *state) {
+    if (state->count == 1) {
+        if (state->interrupted || !state->pressed) {
+            return SINGLE_TAP;
+        } else {
+            return SINGLE_HOLD;
+        }
+    } else if (state->count == 2) {
+        if (state->interrupted || !state->pressed) {
+            return DOUBLE_TAP;
+        } else {
+            return DOUBLE_HOLD;
+        }
+    } else if (state->count == 3) {
+        if (state->interrupted || !state->pressed) {
+            return TRIPLE_TAP;
+        } else {
+            return TRIPLE_HOLD;
+        }
+    } else
+        return TAP_DANCE_NO_MATCH;
+}
+
+void td_numpad_funcrow_finished(qk_tap_dance_state_t *state, void *user_data) {
+    qk_tap_state.numpad_funcrow = get_tapdance_state(state);
+    switch (qk_tap_state.numpad_funcrow) {
+        case SINGLE_TAP ... SINGLE_HOLD:
+            layer_on(_NUMPAD);
+            PLAY_SONG(s_numpad_toggle);
+            break;
+        case DOUBLE_HOLD:
+            layer_on(_FUNCTIONROW);
+            break;
+        case DOUBLE_TAP:
+            if (layer_state_is(_FUNCTIONROW)) {
+                layer_off(_FUNCTIONROW);
+                PLAY_SONG(s_functionrow_off);
+            } else {
+                layer_on(_FUNCTIONROW);
+                PLAY_SONG(s_functionrow_on);
+            }
+            break;
+        default:
+            break;
+    }
+}
+
+void td_numpad_funcrow_reset(qk_tap_dance_state_t *state, void *user_data) {
+    switch (qk_tap_state.numpad_funcrow) {
+        case SINGLE_HOLD:
+            layer_off(_NUMPAD);
+            break;
+        case DOUBLE_HOLD:
+            layer_off(_FUNCTIONROW);
+            break;
+        default:
+            break;
+    }
+}
+
+void td_brackets_left_finished(qk_tap_dance_state_t *state, void *user_data) {
+    qk_tap_state.left_brackets = get_tapdance_state(state);
+    switch (qk_tap_state.left_brackets) {
+        case SINGLE_TAP:
+            register_code16(KC_LEFT_PAREN);
+            break;
+        case DOUBLE_TAP:
+            register_code(KC_LBRACKET);
+            break;
+        case TRIPLE_TAP:
+            register_code16(KC_LEFT_CURLY_BRACE);
+            break;
+        default:
+            break;
+    }
+}
+
+void td_brackets_left_reset(qk_tap_dance_state_t *state, void *user_data) {
+    switch (qk_tap_state.left_brackets) {
+        case SINGLE_TAP:
+            unregister_code16(KC_LEFT_PAREN);
+            break;
+        case DOUBLE_TAP:
+            unregister_code(KC_LBRACKET);
+            break;
+        case TRIPLE_TAP:
+            unregister_code16(KC_LEFT_CURLY_BRACE);
+            break;
+        default:
+            break;
+    }
+    qk_tap_state.left_brackets = 0;
+}
+
+void td_brackets_right_finished(qk_tap_dance_state_t *state, void *user_data) {
+    qk_tap_state.right_brackets = get_tapdance_state(state);
+    switch (qk_tap_state.right_brackets) {
+        case SINGLE_TAP:
+            register_code16(KC_RIGHT_PAREN);
+            break;
+        case DOUBLE_TAP:
+            register_code(KC_RBRACKET);
+            break;
+        case TRIPLE_TAP:
+            register_code16(KC_RIGHT_CURLY_BRACE);
+            break;
+        default:
+            break;
+    }
+}
+
+void td_brackets_right_reset(qk_tap_dance_state_t *state, void *user_data) {
+    switch (qk_tap_state.right_brackets) {
+        case SINGLE_TAP:
+            unregister_code16(KC_RIGHT_PAREN);
+            break;
+        case DOUBLE_TAP:
+            unregister_code(KC_RBRACKET);
+            break;
+        case TRIPLE_TAP:
+            unregister_code16(KC_RIGHT_CURLY_BRACE);
+            break;
+        default:
+            break;
+    }
+    qk_tap_state.right_brackets = 0;
+}
+
+bool     muse_mode      = false;
+uint8_t  last_muse_note = 0;
+uint16_t muse_counter   = 0;
+uint8_t  muse_offset    = 70;
+uint16_t muse_tempo     = 50;
+
+void encoder_update_user(uint8_t index, bool clockwise) {
+    if (muse_mode) {
+        if (IS_LAYER_ON(_RAISE)) {
+            if (clockwise) {
+                muse_offset++;
+            } else {
+                muse_offset--;
+            }
+        } else {
+            if (clockwise) {
+                muse_tempo += 1;
+            } else {
+                muse_tempo -= 1;
+            }
+        }
+    } else {
+        if (clockwise) {
+            tap_code(KC_PGDN);
+        } else {
+            tap_code(KC_PGUP);
+        }
+    }
+}
+
+void dip_switch_update_user(uint8_t index, bool active) {
+    switch (index) {
+        case 0:
+            if (active) {
+                layer_on(_ADJUST);
+            } else {
+                layer_off(_ADJUST);
+            }
+            break;
+        case 1:
+            if (active) {
+                muse_mode = true;
+            } else {
+                muse_mode = false;
+            }
+    }
+}
+
+void matrix_scan_user(void) {
+#ifdef AUDIO_ENABLE
+    if (muse_mode) {
+        if (muse_counter == 0) {
+            uint8_t muse_note = muse_offset + SCALE[muse_clock_pulse()];
+            if (muse_note != last_muse_note) {
+                stop_note(compute_freq_for_midi_note(last_muse_note));
+                play_note(compute_freq_for_midi_note(muse_note), 0xF);
+                last_muse_note = muse_note;
+            }
+        }
+        muse_counter = (muse_counter + 1) % muse_tempo;
+    } else {
+        if (muse_counter) {
+            stop_all_notes();
+            muse_counter = 0;
+        }
+    }
+#endif
+}
+
+bool music_mask_user(uint16_t keycode) {
+    switch (keycode) {
+        case RAISE:
+        case LOWER:
+            return false;
+        default:
+            return true;
+    }
+}