2020 May 30 Breaking Changes Update (#9215)

* Branch point for 2020 May 30 Breaking Change

* Migrate `ACTION_LAYER_TOGGLE` to `TG()` (#8954)

* Migrate `ACTION_MODS_ONESHOT` to `OSM()` (#8957)

* Migrate `ACTION_DEFAULT_LAYER_SET` to `DF()` (#8958)

* Migrate `ACTION_LAYER_MODS` to `LM()` (#8959)

* Migrate `ACTION_MODS_TAP_KEY` to `MT()` (#8968)

* Convert V-USB usbdrv to a submodule (#8321)

* Unify Tap Hold functions and documentation (#8348)

* Changing board names to prevent confusion (#8412)

* Move the Keyboardio Model01 to a keyboardio/ subdir (#8499)

* Move spaceman keyboards (#8830)

* Migrate miscellaneous `fn_actions` entries (#8977)

* Migrate `ACTION_MODS_KEY` to chained mod keycodes (#8979)

* Organizing my keyboards (plaid, tartan, ergoinu) (#8537)

* Refactor Lily58 to use split_common (#6260)

* Refactor zinc to use split_common (#7114)

* Add a message if bin/qmk doesn't work (#9000)

* Fix conflicting types for 'tfp_printf' (#8269)

* Fixed RGB_DISABLE_AFTER_TIMEOUT to be seconds based & small internals cleanup (#6480)

* Refactor and updates to TKC1800 code (#8472)

* Switch to qmk forks for everything (#9019)

* audio refactor: replace deprecated PLAY_NOTE_ARRAY (#8484)

* Audio enable corrections (2/3) (#8903)

* Split HHKB to ANSI and JP layouts and Add VIA support for each (#8582)

* Audio enable corrections (Part 4) (#8974)

* Fix typo from PR7114 (#9171)

* Augment future branch Changelogs (#8978)

* Revert "Branch point for 2020 May 30 Breaking Change"

7 files changed, 403 insertions, 0 deletions

diff --git a/keyboards/hhkb/ansi/keymaps/shela/action_pseudo_lut.c b/keyboards/hhkb/ansi/keymaps/shela/action_pseudo_lut.c
new file mode 100644
index 0000000000..a15f5e5e0b
--- /dev/null
+++ b/keyboards/hhkb/ansi/keymaps/shela/action_pseudo_lut.c
@@ -0,0 +1,143 @@
+#include "quantum.h"
+#include "command.h"
+#include "action_pseudo_lut.h"
+
+static uint8_t send_key_shift_bit[SHIFT_BIT_SIZE];
+
+/*
+ * Pseudo layout action.
+ * This action converts a keycode in order to output the character according to the keymap you specified
+ * still your keyboard layout recognized wrongly on your OS.
+ * Memo: Using other layer keymap to get keycode
+ */
+void action_pseudo_lut(keyrecord_t *record, uint8_t base_keymap_id, const uint16_t (*keymap)[2]) {
+    uint8_t prev_shift;
+    uint16_t keycode;
+    uint16_t pseudo_keycode;
+
+    /* get keycode from keymap you specified */
+    keycode = keymap_key_to_keycode(base_keymap_id, record->event.key);
+
+    prev_shift = keyboard_report->mods & (MOD_BIT(KC_LSFT) | MOD_BIT(KC_RSFT));
+
+    if (record->event.pressed) {
+        /* when magic commands entered, keycode does not converted */
+        if (IS_COMMAND()) {
+            if (prev_shift) {
+                add_shift_bit(keycode);
+            }
+            register_code(keycode);
+            return;
+        }
+
+        if (prev_shift) {
+            pseudo_keycode = convert_keycode(keymap, keycode, true);
+            dprintf("pressed: %02X, converted: %04X\n", keycode, pseudo_keycode);
+            add_shift_bit(keycode);
+
+            if (IS_LSFT(pseudo_keycode)) {
+                register_code(QK_LSFT ^ pseudo_keycode);
+            } else {
+                /* delete shift mod temporarily */
+                del_mods(prev_shift);
+                send_keyboard_report();
+                register_code(pseudo_keycode);
+                add_mods(prev_shift);
+                send_keyboard_report();
+            }
+        } else {
+            pseudo_keycode = convert_keycode(keymap, keycode, false);
+            dprintf("pressed: %02X, converted: %04X\n", keycode, pseudo_keycode);
+
+            if (IS_LSFT(pseudo_keycode)) {
+                add_weak_mods(MOD_BIT(KC_LSFT));
+                send_keyboard_report();
+                register_code(QK_LSFT ^ pseudo_keycode);
+                /* on Windows, prevent key repeat to avoid unintended output */
+                unregister_code(QK_LSFT ^ pseudo_keycode);
+                del_weak_mods(MOD_BIT(KC_LSFT));
+                send_keyboard_report();
+            } else {
+                register_code(pseudo_keycode);
+            }
+        }
+    } else {
+        if (get_shift_bit(keycode)) {
+            del_shift_bit(keycode);
+            pseudo_keycode = convert_keycode(keymap, keycode, true);
+        } else {
+            pseudo_keycode = convert_keycode(keymap, keycode, false);
+        }
+        dprintf("released: %02X, converted: %04X\n", keycode, pseudo_keycode);
+
+        if (IS_LSFT(pseudo_keycode)) {
+            unregister_code(QK_LSFT ^ pseudo_keycode);
+        } else {
+            unregister_code(pseudo_keycode);
+        }
+    }
+}
+
+uint16_t convert_keycode(const uint16_t (*keymap)[2], uint16_t keycode, bool shift_modded)
+{
+    uint16_t pseudo_keycode;
+
+    switch (keycode) {
+        case KC_A ... KC_CAPSLOCK:
+#if defined(__AVR__)
+            if (shift_modded) {
+                pseudo_keycode = pgm_read_word(&keymap[keycode][1]);
+            } else {
+                pseudo_keycode = pgm_read_word(&keymap[keycode][0]);
+            }
+#else
+            if (shift_modded) {
+                pseudo_keycode = keymap[keycode][1];
+            } else {
+                pseudo_keycode = keymap[keycode][0];
+            }
+#endif
+            /* if undefined, use got keycode as it is */
+            if (pseudo_keycode == 0x00) {
+                if (shift_modded) {
+                    pseudo_keycode = S(keycode);
+                } else {
+                    pseudo_keycode = keycode;
+                }
+            }
+            break;
+        default:
+            if (shift_modded) {
+                pseudo_keycode = S(keycode);
+            } else {
+                pseudo_keycode = keycode;
+            }
+            break;
+    }
+    return pseudo_keycode;
+}
+
+uint8_t get_shift_bit(uint16_t keycode) {
+    if ((keycode >> 3) < SHIFT_BIT_SIZE) {
+        return send_key_shift_bit[keycode >> 3] & (1 << (keycode & 7));
+    } else {
+        dprintf("get_shift_bit: Can't get shift bit. keycode: %02X\n", keycode);
+        return 0;
+    }
+}
+
+void add_shift_bit(uint16_t keycode) {
+    if ((keycode >> 3) < SHIFT_BIT_SIZE) {
+        send_key_shift_bit[keycode >> 3] |= (1 << (keycode & 7));
+    } else {
+        dprintf("add_shift_bit: Can't add shift bit. keycode: %02X\n", keycode);
+    }
+}
+
+void del_shift_bit(uint16_t keycode) {
+    if ((keycode >> 3) < SHIFT_BIT_SIZE) {
+        send_key_shift_bit[keycode >> 3] &= ~(1 << (keycode & 7));
+    } else {
+        dprintf("del_shift_bit: Can't delete shift bit. keycode: %02X\n", keycode);
+    }
+}
diff --git a/keyboards/hhkb/ansi/keymaps/shela/action_pseudo_lut.h b/keyboards/hhkb/ansi/keymaps/shela/action_pseudo_lut.h
new file mode 100644
index 0000000000..681252440f
--- /dev/null
+++ b/keyboards/hhkb/ansi/keymaps/shela/action_pseudo_lut.h
@@ -0,0 +1,15 @@
+#ifndef ACTION_PSEUDO_LUT_H
+#define ACTION_PSEUDO_LUT_H
+
+#define SHIFT_BIT_SIZE (0xE7 / 8 + 1) // 1bit per 1key
+
+#define IS_LSFT(kc) ((QK_LSFT & (kc)) == QK_LSFT)
+
+void action_pseudo_lut(keyrecord_t *, uint8_t, const uint16_t (*)[2]);
+uint16_t convert_keycode(const uint16_t (*)[2], uint16_t, bool);
+
+uint8_t get_shift_bit(uint16_t);
+void add_shift_bit(uint16_t);
+void del_shift_bit(uint16_t);
+
+#endif
diff --git a/keyboards/hhkb/ansi/keymaps/shela/config.h b/keyboards/hhkb/ansi/keymaps/shela/config.h
new file mode 100644
index 0000000000..08cc1fb46e
--- /dev/null
+++ b/keyboards/hhkb/ansi/keymaps/shela/config.h
@@ -0,0 +1,12 @@
+#ifndef CONFIG_SHELA_H
+#define CONFIG_SHELA_H
+
+#include "../../config.h"
+
+#undef TAPPING_TERM
+#define TAPPING_TERM 230
+
+#define ONESHOT_TAP_TOGGLE 2
+#define ONESHOT_TIMEOUT 2000
+
+#endif
diff --git a/keyboards/hhkb/ansi/keymaps/shela/keymap.c b/keyboards/hhkb/ansi/keymaps/shela/keymap.c
new file mode 100644
index 0000000000..3971e8f945
--- /dev/null
+++ b/keyboards/hhkb/ansi/keymaps/shela/keymap.c
@@ -0,0 +1,186 @@
+/*
+ * HHKB Pro 2 US Layout for shela
+ */
+#include QMK_KEYBOARD_H
+#include "keymap_jis2us.h"
+#include "action_pseudo_lut.h"
+
+enum keymap_layout
+{
+    BASE = 0,
+    PSEUDO_US,
+    DVORAK,
+    MOUSE,
+    TENKEY,
+    HHKB,
+    SPACE_FN,
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+    /* Layer 0: Default Layer
+     * ,-----------------------------------------------------------------------------------------.
+     * | Esc |  1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |  9  |  0  |  -  |  =  |  `  | BSp |
+     * |-----------------------------------------------------------------------------------------|
+     * |  Tab   |  Q  |  W  |  E  |  R  |  T  |  Y  |  U  |  I  |  O  |  P  |  [  |  ]  |   \    |
+     * |-----------------------------------------------------------------------------------------|
+     * | Control  |  A  |  S  |  D  |  F  |  G  |  H  |  J  |  K  |  L  |  ;  |  '  |   Enter    |
+     * |-----------------------------------------------------------------------------------------|
+     * |    Shift    |  Z  |  X  |  C  |  V  |  B  |  N  |  M  |  ,  |  .  |  /  |  Shift  | Fn0 |
+     * `-----------------------------------------------------------------------------------------'
+     *           |LAlt |  LGui  |               SpaceFN             |  RGui  |RAlt |
+     *           `-----------------------------------------------------------------'
+     */
+    [BASE] =
+        LAYOUT(KC_ESC, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS, KC_EQL, KC_GRV, KC_BSPC,
+               KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_LBRC, KC_RBRC, KC_BSLS,
+               KC_LCTL, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT, KC_ENT,
+               OSM(MOD_LSFT), KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_RSFT, MO(HHKB),
+               KC_LALT, KC_LGUI, LT(SPACE_FN, KC_SPACE), KC_RGUI, KC_RALT),
+
+    /* Layer 1: Pseudo US Layout Layer
+     * ,-----------------------------------------------------------------------------------------.
+     * | Esc | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | BSp |
+     * |-----------------------------------------------------------------------------------------|
+     * |  Tab   | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 |  Fn1   |
+     * |-----------------------------------------------------------------------------------------|
+     * | Control  | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 |   Enter    |
+     * |-----------------------------------------------------------------------------------------|
+     * |    Shift    | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 | Fn1 |  Shift  | Fn0 |
+     * `-----------------------------------------------------------------------------------------'
+     *           |LGui |  Fn3   |               SpaceFN             |  Fn4   |RGui |
+     *           `-----------------------------------------------------------------'
+     */
+    [PSEUDO_US] =
+        LAYOUT(KC_ESC, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_BSPC,
+               KC_TAB, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1,
+               KC_LCTL, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_ENT,
+               KC_LSFT, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_FN1, KC_RSFT, MO(HHKB),
+               KC_LGUI, MT(MOD_LALT, KC_MHEN), LT(SPACE_FN, KC_SPACE), MT(MOD_RALT, KC_KANA), KC_RGUI),
+
+    /* Layer 2: Dvorak Layer
+     * ,-----------------------------------------------------------------------------------------.
+     * | Esc |  1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |  9  |  0  |  [  |  ]  |  `  | BSp |
+     * |-----------------------------------------------------------------------------------------|
+     * |  Tab   |  '  |  ,  |  .  |  P  |  Y  |  F  |  G  |  C  |  R  |  L  |  /  |  =  |   \    |
+     * |-----------------------------------------------------------------------------------------|
+     * | Control  |  A  |  O  |  E  |  U  |  I  |  D  |  H  |  T  |  N  |  S  |  -  |   Enter    |
+     * |-----------------------------------------------------------------------------------------|
+     * |    Shift    |  ;  |  Q  |  J  |  K  |  X  |  B  |  M  |  W  |  V  |  Z  |  Shift  | Fn0 |
+     * `-----------------------------------------------------------------------------------------'
+     *           |LAlt |  LGui  |              SpaceFN              |  RGui  |RAlt |
+     *           `-----------------------------------------------------------------'
+     */
+    [DVORAK] =
+        LAYOUT(KC_ESC, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_LBRC, KC_RBRC, KC_GRV, KC_BSPC,
+               KC_TAB, KC_QUOT, KC_COMM, KC_DOT, KC_P, KC_Y, KC_F, KC_G, KC_C, KC_R, KC_L, KC_SLSH, KC_EQL, KC_BSLS,
+               KC_LCTL, KC_A, KC_O, KC_E, KC_U, KC_I, KC_D, KC_H, KC_T, KC_N, KC_S, KC_MINS, KC_ENT,
+               KC_LSFT, KC_SCLN, KC_Q, KC_J, KC_K, KC_X, KC_B, KC_M, KC_W, KC_V, KC_Z, KC_RSFT, MO(HHKB),
+               KC_LALT, KC_LGUI, LT(SPACE_FN, KC_SPACE), KC_RGUI, KC_RALT),
+
+    /* Layer 3: Mouse layer
+     * ,-----------------------------------------------------------------------------------------.
+     * | Esc | F1  | F2  | F3  | F4  | F5  | F6  | F7  | F8  | F9  | F10 | F11 | F12 |     |     |
+     * |-----------------------------------------------------------------------------------------|
+     * |        |     |     |     |     |     | MwL | MwD | MwU | MwR |     |     |     |        |
+     * |-----------------------------------------------------------------------------------------|
+     * |          |     |     |     |     |     | McL | McD | McU | McR |     |     |            |
+     * |-----------------------------------------------------------------------------------------|
+     * |             |     |     |     |     |     | Mb1 | Mb2 | Mb3 |     |     |         | Fn0 |
+     * `-----------------------------------------------------------------------------------------'
+     *           |     |        |                Mb1                |        |     |
+     *           `-----------------------------------------------------------------'
+     */
+    [MOUSE] =
+        LAYOUT(KC_ESC, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_NO, KC_TRNS,
+               KC_TRNS, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_WH_L, KC_WH_D, KC_WH_U, KC_WH_R, KC_NO, KC_NO, KC_NO, KC_NO,
+               KC_TRNS, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_MS_L, KC_MS_D, KC_MS_U, KC_MS_R, KC_NO, KC_NO, KC_TRNS,
+               KC_TRNS, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_BTN1, KC_BTN2, KC_BTN3, KC_NO, KC_NO, KC_TRNS, MO(HHKB),
+               KC_TRNS, KC_TRNS, KC_BTN1, KC_TRNS, KC_TRNS),
+
+    /* Layer 4: Tenkey layer
+     * ,-----------------------------------------------------------------------------------------.
+     * | Esc |     |     |     |     |     |     |     |     |     |  /  |  *  |  -  |     | BSp |
+     * |-----------------------------------------------------------------------------------------|
+     * |        |     |     |     |     |     |     |     |     |  7  |  8  |  9  |  +  |        |
+     * |-----------------------------------------------------------------------------------------|
+     * |          |     |     |     |     |     |     |     |     |  4  |  5  |  6  |   Enter    |
+     * |-----------------------------------------------------------------------------------------|
+     * |             |     |     |     |     |     |     |     |  1  |  2  |  3  |    +    | Fn0 |
+     * `-----------------------------------------------------------------------------------------'
+     *           |     |        |              SpaceFN              |   0    |  .  |
+     *           `-----------------------------------------------------------------'
+     */
+    [TENKEY] =
+        LAYOUT(KC_ESC, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_PSLS, KC_PAST, KC_PMNS, KC_NO, KC_BSPC,
+               KC_TRNS, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_KP_7, KC_KP_8, KC_KP_9, KC_PPLS, KC_NO,
+               KC_TRNS, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_KP_4, KC_KP_5, KC_KP_6, KC_PENT,
+               KC_TRNS, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_KP_1, KC_KP_2, KC_KP_3, KC_PPLS, MO(HHKB),
+               KC_TRNS, KC_TRNS, LT(SPACE_FN, KC_SPACE), KC_KP_0, KC_PDOT),
+
+    /* Layer 5: HHKB mode (HHKB Fn)
+     * ,-----------------------------------------------------------------------------------------.
+     * | Pwr | F1  | F2  | F3  | F4  | F5  | F6  | F7  | F8  | F9  | F10 | F11 | F12 | Ins | Del |
+     * |-----------------------------------------------------------------------------------------|
+     * |  Caps  | Fn5 | Fn6 | Fn7 | Fn8 | Fn9 |     |     | Psc | Slk | Pus | Up  |     |  BSp   |
+     * |-----------------------------------------------------------------------------------------|
+     * |          | VoD | VoU | Mut |     |     |  *  |  /  | Hom | PgU | Lef | Rig |   Enter    |
+     * |-----------------------------------------------------------------------------------------|
+     * |             |     |     |     |     |     |  +  |  -  | End | PgD | Dow |         |     |
+     * `-----------------------------------------------------------------------------------------'
+     *           |     |        |                                   |        |     |
+     *           `-----------------------------------------------------------------'
+     */
+    [HHKB] =
+        LAYOUT(KC_PWR, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_INS, KC_DEL,
+               KC_CAPS, DF(BASE), DF(PSEUDO_US), DF(MOUSE), DF(TENKEY), DF(DVORAK), KC_TRNS, KC_TRNS, KC_PSCR, KC_SLCK, KC_PAUS, KC_UP, KC_TRNS, KC_BSPC,
+               KC_TRNS, KC_VOLD, KC_VOLU, KC_MUTE, KC_TRNS, KC_TRNS, KC_PAST, KC_PSLS, KC_HOME, KC_PGUP, KC_LEFT, KC_RGHT, KC_PENT,
+               KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_PPLS, KC_PMNS, KC_END, KC_PGDN, KC_DOWN, KC_TRNS, KC_TRNS,
+               KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+
+    /* Layer 6: SpaceFN
+     * ,-----------------------------------------------------------------------------------------.
+     * |     | F1  | F2  | F3  | F4  | F5  | F6  | F7  | F8  | F9  | F10 | F11 | F12 |     | Del |
+     * |-----------------------------------------------------------------------------------------|
+     * |        | Hom | Up  | End |     |     |     | Hom | End |     | Psc | Slk | Pau |  Ins   |
+     * |-----------------------------------------------------------------------------------------|
+     * |          | Lef | Dow | Rig | PgU |     | Lef | Dow | Up  | Rig |     |     |            |
+     * |-----------------------------------------------------------------------------------------|
+     * |             |     |     | PgD |     | Spc |     | PgD | PgU |     |     |         |     |
+     * `-----------------------------------------------------------------------------------------'
+     *           |     |        |                                   |        |     |
+     *           `-----------------------------------------------------------------'
+     */
+    [SPACE_FN] =
+        LAYOUT(KC_TRNS, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_NO, KC_DEL,
+               KC_TRNS, KC_HOME, KC_UP, KC_END, KC_NO, KC_NO, KC_NO, KC_HOME, KC_END, KC_NO, KC_PSCR, KC_SLCK, KC_PAUS, KC_INS,
+               KC_TRNS, KC_LEFT, KC_DOWN, KC_RGHT, KC_PGUP, KC_NO, KC_LEFT, KC_DOWN, KC_UP, KC_RGHT, KC_NO, KC_NO, KC_TRNS,
+               KC_TRNS, KC_NO, KC_NO, KC_PGDN, KC_NO, KC_SPC, KC_NO, KC_PGDN, KC_PGUP, KC_NO, KC_NO, KC_TRNS, KC_NO,
+               KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+};
+
+/*
+ * user defined action function
+ */
+enum function_id
+{
+    PSEUDO_US_FUNCTION,
+};
+
+void action_function(keyrecord_t *record, uint8_t id, uint8_t opt)
+{
+
+    switch (id)
+    {
+    case PSEUDO_US_FUNCTION:
+        action_pseudo_lut(record, BASE, keymap_jis2us);
+        break;
+    }
+}
+
+/*
+ * Fn action definition
+ */
+const uint16_t PROGMEM fn_actions[] = {
+    [1] = ACTION_FUNCTION(PSEUDO_US_FUNCTION),
+};
diff --git a/keyboards/hhkb/ansi/keymaps/shela/keymap_jis2us.h b/keyboards/hhkb/ansi/keymaps/shela/keymap_jis2us.h
new file mode 100644
index 0000000000..edc1e6d869
--- /dev/null
+++ b/keyboards/hhkb/ansi/keymaps/shela/keymap_jis2us.h
@@ -0,0 +1,32 @@
+#ifndef LAYOUT_JIS2US_H
+#define LAYOUT_JIS2US_H
+
+/* keymap for convert from JIS to US */
+const uint16_t PROGMEM keymap_jis2us[][2] = {
+    [KC_A ... KC_CAPS] = { 0x00, 0x00 }, /* default value */
+
+    [KC_1]    = { KC_1,    KC_EXLM    }, /* 1 and ! -> 1 and ! */
+    [KC_2]    = { KC_2,    KC_LBRC    }, /* 2 and " -> 2 and @ */
+    [KC_3]    = { KC_3,    KC_HASH    }, /* 3 and # -> 3 and # */
+    [KC_4]    = { KC_4,    KC_DLR     }, /* 4 and $ -> 4 and $ */
+    [KC_5]    = { KC_5,    KC_PERC    }, /* 5 and % -> 5 and % */
+    [KC_6]    = { KC_6,    KC_EQL     }, /* 6 and & -> 6 and ^ */
+    [KC_7]    = { KC_7,    KC_CIRC    }, /* 7 and ' -> 7 and & */
+    [KC_8]    = { KC_8,    KC_DQT     }, /* 8 and ( -> 8 and * */
+    [KC_9]    = { KC_9,    KC_ASTR    }, /* 9 and ) -> 9 and ( */
+    [KC_0]    = { KC_0,    KC_LPRN    }, /* 0 and (no assign) -> 0 and ) */
+    [KC_MINS] = { KC_MINS, S(KC_RO)   }, /* - and = -> - and _ */
+    [KC_EQL]  = { KC_UNDS, KC_COLN    }, /* ^ and ~ -> = and + */
+    [KC_LBRC] = { KC_RBRC, KC_RCBR    }, /* @ and ` -> [ and { */
+    [KC_RBRC] = { KC_BSLS, KC_PIPE    }, /* [ and { -> ] and } */
+    [KC_BSLS] = { KC_JYEN, S(KC_JYEN) }, /* ] and } -> / and | */
+    [KC_NUHS] = { KC_NUHS, S(KC_NUHS) }, /* (no assign) */
+    [KC_SCLN] = { KC_SCLN, KC_QUOT    }, /* ; and + -> ; and : */
+    [KC_QUOT] = { KC_AMPR, KC_AT      }, /* : and * -> ' and " */
+    [KC_GRV]  = { KC_LCBR, KC_PLUS    }, /* (no assign) -> ` and ~ */
+    [KC_COMM] = { KC_COMM, KC_LT      }, /* , and < -> , and < */
+    [KC_DOT]  = { KC_DOT,  KC_GT      }, /* . and > -> . and > */
+    [KC_SLSH] = { KC_SLSH, KC_QUES    }, /* / and ? -> / and ? */
+};
+
+#endif
diff --git a/keyboards/hhkb/ansi/keymaps/shela/readme.md b/keyboards/hhkb/ansi/keymaps/shela/readme.md
new file mode 100644
index 0000000000..5a06a83632
--- /dev/null
+++ b/keyboards/hhkb/ansi/keymaps/shela/readme.md
@@ -0,0 +1,14 @@
+# Shela's HHKB Layout
+
+Layer 0: US Layout  
+Layer 1: Pseudo US Layout  
+Layer 2: Dvorak Layout  
+Layer 3: Mouse  
+Layer 4: Tenkey  
+Layer 5: HHKB Fn Key  
+Layer 6: SpaceFN  
+
+## Pseudo US Layout
+
+On japanese Windows, HHKB Professional 2 US layout model recognized wrongly as JIS layout without changing OS settings.  
+But, you can use HHKB like a US layout keyboard as it is.
diff --git a/keyboards/hhkb/ansi/keymaps/shela/rules.mk b/keyboards/hhkb/ansi/keymaps/shela/rules.mk
new file mode 100644
index 0000000000..d0586bda68
--- /dev/null
+++ b/keyboards/hhkb/ansi/keymaps/shela/rules.mk
@@ -0,0 +1 @@
+SRC += action_pseudo_lut.c