[Keyboard] Add halfcliff keyboard (#13515)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

12 files changed, 856 insertions, 0 deletions

diff --git a/keyboards/halfcliff/config.h b/keyboards/halfcliff/config.h
new file mode 100644
index 0000000000..287fd2f4ac
--- /dev/null
+++ b/keyboards/halfcliff/config.h
@@ -0,0 +1,69 @@
+/*
+Copyright 2021 n2
+
+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/>.
+*/
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID    0x0335
+#define PRODUCT_ID   0x0021
+#define DEVICE_VER   0x0001
+#define MANUFACTURER n2
+#define PRODUCT      halfcliff
+
+/* key matrix size */
+#define MATRIX_ROWS 20
+#define MATRIX_COLS 5
+
+#define MATRIX_ROW_PINS { F5, F6, F7, D7, B5, F5, F6, F7, D7, B5 }
+#define MATRIX_COL_PINS { B4, E6, C6, B6, B2 }
+#define UNUSED_PINS
+
+//#define NUMBER_OF_ENCODERS 1
+#define ENCODERS_PAD_A { D4 }
+#define ENCODERS_PAD_B { F4 }
+#define ENCODER_RESOLUTION 2
+
+/*
+ * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
+ */
+#define SOFT_SERIAL_PIN D2  // or D1, D2, D3, E6
+
+ #define RGB_DI_PIN D3
+ #ifdef RGB_DI_PIN
+   #define RGBLED_NUM 10
+   #define RGBLIGHT_SPLIT
+   #define RGBLED_SPLIT { 5, 5 }
+   #define RGBLIGHT_HUE_STEP 8
+   #define RGBLIGHT_SAT_STEP 8
+   #define RGBLIGHT_VAL_STEP 8
+   #define RGBLIGHT_LIMIT_VAL 255 /* The maximum brightness level */
+   #define RGBLIGHT_SLEEP  /* If defined, the RGB lighting will be switched off when the host goes to sleep */
+ #endif
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 5
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/* disable these deprecated features by default */
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
diff --git a/keyboards/halfcliff/halfcliff.c b/keyboards/halfcliff/halfcliff.c
new file mode 100644
index 0000000000..999e9036db
--- /dev/null
+++ b/keyboards/halfcliff/halfcliff.c
@@ -0,0 +1,92 @@
+/* Copyright 2021 n2
+ *
+ * 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 "halfcliff.h"
+
+#ifdef OLED_DRIVER_ENABLE
+
+// Defines names for use in layer keycodes and the keymap
+enum layer_names {
+    _DEFAULT = 0,
+    _RAISE,
+    _LOWER,
+    _ADJUST
+/*    _FN */
+};
+
+__attribute__((weak)) oled_rotation_t oled_init_user(oled_rotation_t rotation) {
+    if (!is_keyboard_master()) {
+        return OLED_ROTATION_180;  // flips the display 180 degrees if offhand
+    }
+    return rotation;
+}
+
+__attribute__((weak)) void oled_task_user(void) {
+  if (!is_keyboard_master()) {
+    static const char PROGMEM qmk_logo[] = {
+        0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92, 0x93, 0x94,
+        0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2, 0xB3, 0xB4,
+        0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0x00
+    };
+    oled_write_P(qmk_logo, false);
+  } else {
+      // Host Keyboard Layer Status
+      oled_write_P(PSTR("Layer: "), false);
+      switch (get_highest_layer(layer_state)) {
+          case _DEFAULT:
+              oled_write_P(PSTR("DEFAULT\n"), false);
+              break;
+          case _RAISE:
+              oled_write_P(PSTR("RAISE\n"), false);
+              break;
+          case _LOWER:
+              oled_write_P(PSTR("LOWER\n"), false);
+          break;
+          case _ADJUST:
+              oled_write_P(PSTR("ADJUST\n"), false);
+          break;
+          default:
+              // Or use the write_ln shortcut over adding '\n' to the end of your string
+          oled_write_ln_P(PSTR("Undefined"), false);
+      };
+      // Host Keyboard LED Status
+      led_t led_state = host_keyboard_led_state();
+      oled_write_P(led_state.num_lock ? PSTR("NUMLCK ") : PSTR("       "), false);
+      oled_write_P(led_state.caps_lock ? PSTR("CAPLCK ") : PSTR("       "), false);
+      oled_write_P(led_state.scroll_lock ? PSTR("SCRLCK\n") : PSTR("      \n"), false);
+    }
+}
+#endif
+
+#ifdef ENCODER_ENABLE
+bool encoder_update_kb(uint8_t index, bool clockwise) {
+    if (!encoder_update_user(index, clockwise)) { return false; }
+    if (index == 0) { /* Left side encoder */
+        if (clockwise) {
+            tap_code(KC_WH_U);
+        } else {
+            tap_code(KC_WH_D);
+        }
+    } else if (index == 1) { /* Right side encoder */
+        if (clockwise) {
+            tap_code(KC_WH_U);
+        } else {
+            tap_code(KC_WH_D);
+        }
+    }
+    return true;
+}
+#endif
diff --git a/keyboards/halfcliff/halfcliff.h b/keyboards/halfcliff/halfcliff.h
new file mode 100644
index 0000000000..6e4c808641
--- /dev/null
+++ b/keyboards/halfcliff/halfcliff.h
@@ -0,0 +1,58 @@
+/* Copyright 2021 n2
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+#include "quantum.h"
+
+/* This is a shortcut to help you visually see your layout.
+ *
+ * The first section contains all of the arguments representing the physical
+ * layout of the board and position of the keys.
+ *
+ * The second converts the arguments into a two-dimensional array which
+ * represents the switch matrix.
+ */
+
+#define LAYOUT( \
+    l51,l50,l00,l01,l02,l03,l04,r04,r03,r02,r01,r00,r50,r51,r52,\
+    l61,l60,l10,l11,l12,l13,l14,r14,r13,r12,r11,r10,r60,r61,r62,\
+    l71,l70,l20,l21,l22,l23,l24,r24,r23,r22,r21,r20,r70,r71,r72,\
+    l81,l80,l30,l31,l32,l33,l34,r34,r33,r32,r31,r30,r80,r81,r82,\
+    l91,l90,l40,l41,l42,l43,l44,r44,r43,r42,r41,r40,r90,r91,r92\
+) \
+{ \
+    {l00,  l01,  l02,  l03,  l04  }, \
+    {l10,  l11,  l12,  l13,  l14  }, \
+    {l20,  l21,  l22,  l23,  l24  }, \
+    {l30,  l31,  l32,  l33,  l34  }, \
+    {l40,  l41,  l42,  l43,  l44  }, \
+    {l50,  l51,  KC_NO,KC_NO,KC_NO}, \
+    {l60,  l61,  KC_NO,KC_NO,KC_NO}, \
+    {l70,  l71,  KC_NO,KC_NO,KC_NO}, \
+    {l80,  l81,  KC_NO,KC_NO,KC_NO}, \
+    {l90,  l91,  KC_NO,KC_NO,KC_NO}, \
+    {r00,  r01,  r02,  r03,  r04  }, \
+    {r10,  r11,  r12,  r13,  r14  }, \
+    {r20,  r21,  r22,  r23,  r24  }, \
+    {r30,  r31,  r32,  r33,  r34  }, \
+    {r40,  r41,  r42,  r43,  r44  }, \
+    {r50,  r51,  r52,  KC_NO,KC_NO}, \
+    {r60,  r61,  r62,  KC_NO,KC_NO}, \
+    {r70,  r71,  r72,  KC_NO,KC_NO}, \
+    {r80,  r81,  r82,  KC_NO,KC_NO}, \
+    {r90,  r91,  r92,  KC_NO,KC_NO}, \
+}
diff --git a/keyboards/halfcliff/info.json b/keyboards/halfcliff/info.json
new file mode 100644
index 0000000000..2a859bb4c3
--- /dev/null
+++ b/keyboards/halfcliff/info.json
@@ -0,0 +1,88 @@
+{
+    "keyboard_name": "halfcliff", 
+    "url": "https://github.com/N2-Sumikko", 
+    "maintainer": "n2", 
+    "width": 17.25, 
+    "height": 5, 
+    "layouts": {
+        "LAYOUT": {
+            "layout": [
+                          {"x":0.75,"y":0},
+                          {"x":1.75,"y":0},
+                          {"x":2.75,"y":0},
+                          {"x":3.75,"y":0},
+                          {"x":4.75,"y":0},
+                          {"x":5.75,"y":0},
+                          {"x":6.75,"y":0},
+                          {"x":8.25,"y":0},
+                          {"x":9.25,"y":0},
+                          {"x":10.25,"y":0},
+                          {"x":11.25,"y":0},
+                          {"x":12.25,"y":0},
+                          {"x":13.25,"y":0},
+                          {"x":14.25,"y":0},
+                          {"x":15.25,"y":0},
+                          {"x":0.25,"y":1,"w":1.5},
+                          {"x":1.75,"y":1},
+                          {"x":2.75,"y":1},
+                          {"x":3.75,"y":1},
+                          {"x":4.75,"y":1},
+                          {"x":5.75,"y":1},
+                          {"x":6.75,"y":1},
+                          {"x":8.25,"y":1},
+                          {"x":9.25,"y":1},
+                          {"x":10.25,"y":1},
+                          {"x":11.25,"y":1},
+                          {"x":12.25,"y":1},
+                          {"x":13.25,"y":1},
+                          {"x":14.25,"y":1},
+                          {"x":16.25,"y":0},
+                          {"x":0,"y":2,"w":1.75},
+                          {"x":1.75,"y":2},
+                          {"x":2.75,"y":2},
+                          {"x":3.75,"y":2},
+                          {"x":4.75,"y":2},
+                          {"x":5.75,"y":2},
+                          {"x":6.75,"y":2},
+                          {"x":8.25,"y":2},
+                          {"x":9.25,"y":2},
+                          {"x":10.25,"y":2},
+                          {"x":11.25,"y":2},
+                          {"x":12.25,"y":2},
+                          {"x":13.25,"y":2},
+                          {"x":14.25,"y":2},
+                          {"x":15.5,"y":1,"w":1.25,"h":2},
+                          {"x":0,"y":3,"w":1.75},
+                          {"x":1.75,"y":3},
+                          {"x":2.75,"y":3},
+                          {"x":3.75,"y":3},
+                          {"x":4.75,"y":3},
+                          {"x":5.75,"y":3},
+                          {"x":6.75,"y":3},
+                          {"x":8.25,"y":3},
+                          {"x":9.25,"y":3},
+                          {"x":10.25,"y":3},
+                          {"x":11.25,"y":3},
+                          {"x":12.25,"y":3},
+                          {"x":13.25,"y":3},
+                          {"x":14.25,"y":3},
+                          {"x":15.25,"y":3,"w":2},
+                          {"x":0.5,"y":4,"w":1.25},
+                          {"x":1.75,"y":4},
+                          {"x":2.75,"y":4},
+                          {"x":3.75,"y":4},
+                          {"x":4.75,"y":4},
+                          {"x":5.75,"y":4},
+                          {"x":6.75,"y":4},
+                          {"x":8.25,"y":4},
+                          {"x":9.25,"y":4},
+                          {"x":10.25,"y":4},
+                          {"x":11.25,"y":4},
+                          {"x":12.25,"y":4},
+                          {"x":13.25,"y":4},
+                          {"x":14.25,"y":4},
+                          {"x":15.25,"y":4}
+                      ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/keyboards/halfcliff/keymaps/default/keymap.c b/keyboards/halfcliff/keymaps/default/keymap.c
new file mode 100644
index 0000000000..02743f5d49
--- /dev/null
+++ b/keyboards/halfcliff/keymaps/default/keymap.c
@@ -0,0 +1,109 @@
+/* Copyright 2021 n2
+ *
+ * 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 "keymap_jp.h"
+
+// Defines names for use in layer keycodes and the keymap
+enum layer_names {
+    _DEFAULT = 0,
+    _RAISE,
+    _LOWER,
+    _ADJUST
+/*    _FN */
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+   /* DEFAULT
+    * ,--------------------------------------------------------------------------------------------------------------------------------------.
+    * |ZEN/HAN |   1    |   2    |   3    |   4    |   5    |        |   6    |   7    |   8    |   9    |   0    |   -    |   ^    |   \    |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * | TAB    |   q    |   w    |   e    |   r    |   t    |        |   y    |   u    |   i    |   o    |   p    |   @    |   [    | BSPC   |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * | CAPS   |   a    |   s    |   d    |   f    |   g    |        |   h    |   j    |   k    |   l    |   ;    |   :    |   ]    | ENT    |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * | LSHIFT |   z    |   x    |   c    |   v    |   b    |        |   n    |   m    |   ,    |   .    |   /    |   \    |  UP    | RSHIFT |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * | CTRL   | LGUI   | ALT    | MUHEN  | SPACE  | SPACE  | LOWER  | RAISE  | SPACE  | HENKAN | KANA   | APP    | LEFT   | DOWN   | RIGHT  |
+    * `--------------------------------------------------------------------------------------------------------------------------------------'
+    */
+    [_DEFAULT] = LAYOUT(
+      KC_ZKHK, KC_1,    KC_2,    KC_3,    KC_4,    KC_5,   _______,    KC_6,       KC_7,   KC_8,    KC_9,    KC_0,    JP_MINS, JP_CIRC, JP_YEN,
+      KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,   _______,    KC_Y,       KC_U,   KC_I,    KC_O,    KC_P,    JP_AT  , JP_LBRC, KC_BSPC,
+      KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,   _______,    KC_H,       KC_J,   KC_K,    KC_L,    KC_SCLN, JP_COLN, JP_RBRC, KC_ENT,
+      KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,   _______,    KC_N,       KC_M,   KC_COMM, KC_DOT,  KC_SLSH, JP_BSLS, KC_UP,   KC_RSFT,
+      KC_LCTL, KC_LGUI, KC_LALT, KC_MHEN, KC_SPC,  KC_SPC, MO(_LOWER), MO(_RAISE), KC_SPC, KC_HENK, KC_KANA, KC_APP,  KC_LEFT, KC_DOWN, KC_RGHT
+    ),
+   /* RAISE
+    * ,--------------------------------------------------------------------------------------------------------------------------------------.
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |   1    |   2    |   3    |   4    |   5    |        |   6    |   7    |   8    |   9    |   0    |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * `--------------------------------------------------------------------------------------------------------------------------------------'
+    */
+    [_RAISE] = LAYOUT(
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    _______, KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+    ),
+   /* LOWER
+    * ,--------------------------------------------------------------------------------------------------------------------------------------.
+    * |        |        |        |        |        |        |RGB_TOG |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |RGB_VAI |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |RGB_HUI |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |RGB_SAI |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * `--------------------------------------------------------------------------------------------------------------------------------------'
+    */
+    [_LOWER] = LAYOUT(
+      _______, _______, _______, _______, _______, _______, RGB_TOG, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, RGB_VAI, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, RGB_HUI, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, RGB_SAI, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+    ),
+   /* ADJUST
+    * ,--------------------------------------------------------------------------------------------------------------------------------------.
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * `--------------------------------------------------------------------------------------------------------------------------------------'
+    */
+    [_ADJUST] = LAYOUT(
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+    )
+};
diff --git a/keyboards/halfcliff/keymaps/default/readme.md b/keyboards/halfcliff/keymaps/default/readme.md
new file mode 100644
index 0000000000..2924c68c24
--- /dev/null
+++ b/keyboards/halfcliff/keymaps/default/readme.md
@@ -0,0 +1 @@
+# The default keymap for halfcliff
diff --git a/keyboards/halfcliff/keymaps/via/keymap.c b/keyboards/halfcliff/keymaps/via/keymap.c
new file mode 100644
index 0000000000..e0a825e7c3
--- /dev/null
+++ b/keyboards/halfcliff/keymaps/via/keymap.c
@@ -0,0 +1,112 @@
+/* Copyright 2021 n2
+ *
+ * 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 "keymap_jp.h"
+
+#define RAISE FN_MO13
+#define LOWER FN_MO23
+
+// Defines names for use in layer keycodes and the keymap
+enum layer_names {
+    _DEFAULT = 0,
+    _RAISE,
+    _LOWER,
+    _ADJUST
+/*    _FN */
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+   /* DEFAULT
+    * ,--------------------------------------------------------------------------------------------------------------------------------------.
+    * |ZEN/HAN |   1    |   2    |   3    |   4    |   5    |        |   6    |   7    |   8    |   9    |   0    |   -    |   ^    |   \    |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * | TAB    |   q    |   w    |   e    |   r    |   t    |        |   y    |   u    |   i    |   o    |   p    |   @    |   [    | BSPC   |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * | CAPS   |   a    |   s    |   d    |   f    |   g    |        |   h    |   j    |   k    |   l    |   ;    |   :    |   ]    | ENT    |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * | LSHIFT |   z    |   x    |   c    |   v    |   b    |        |   n    |   m    |   ,    |   .    |   /    |   \    |  UP    | RSHIFT |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * | CTRL   | LGUI   | ALT    | MUHEN  | SPACE  | SPACE  | LOWER  | RAISE  | SPACE  | HENKAN | KANA   | APP    | LEFT   | DOWN   | RIGHT  |
+    * `--------------------------------------------------------------------------------------------------------------------------------------'
+    */
+    [_DEFAULT] = LAYOUT(
+      KC_ZKHK, KC_1,    KC_2,    KC_3,    KC_4,    KC_5,   _______,    KC_6,       KC_7,   KC_8,    KC_9,    KC_0,    JP_MINS, JP_CIRC, JP_YEN,
+      KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,   _______,    KC_Y,       KC_U,   KC_I,    KC_O,    KC_P,    JP_AT  , JP_LBRC, KC_BSPC,
+      KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,   _______,    KC_H,       KC_J,   KC_K,    KC_L,    KC_SCLN, JP_COLN, JP_RBRC, KC_ENT,
+      KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,   _______,    KC_N,       KC_M,   KC_COMM, KC_DOT,  KC_SLSH, JP_BSLS, KC_UP,   KC_RSFT,
+      KC_LCTL, KC_LGUI, KC_LALT, KC_MHEN, KC_SPC,  KC_SPC, FN_MO23,    FN_MO13,    KC_SPC, KC_HENK, KC_KANA, KC_APP,  KC_LEFT, KC_DOWN, KC_RGHT
+    ),
+   /* RAISE
+    * ,--------------------------------------------------------------------------------------------------------------------------------------.
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |   1    |   2    |   3    |   4    |   5    |        |   6    |   7    |   8    |   9    |   0    |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * `--------------------------------------------------------------------------------------------------------------------------------------'
+    */
+    [_RAISE] = LAYOUT(
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    _______, KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+    ),
+   /* LOWER
+    * ,--------------------------------------------------------------------------------------------------------------------------------------.
+    * |        |        |        |        |        |        |RGB_TOG |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |RGB_VAI |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |RGB_HUI |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |RGB_SAI |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * `--------------------------------------------------------------------------------------------------------------------------------------'
+    */
+    [_LOWER] = LAYOUT(
+      _______, _______, _______, _______, _______, _______, RGB_TOG, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, RGB_VAI, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, RGB_HUI, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, RGB_SAI, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+    ),
+   /* ADJUST
+    * ,--------------------------------------------------------------------------------------------------------------------------------------.
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+    * |        |        |        |        |        |        |        |        |        |        |        |        |        |        |        |
+    * `--------------------------------------------------------------------------------------------------------------------------------------'
+    */
+    [_ADJUST] = LAYOUT(
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+    )
+};
diff --git a/keyboards/halfcliff/keymaps/via/readme.md b/keyboards/halfcliff/keymaps/via/readme.md
new file mode 100644
index 0000000000..2924c68c24
--- /dev/null
+++ b/keyboards/halfcliff/keymaps/via/readme.md
@@ -0,0 +1 @@
+# The default keymap for halfcliff
diff --git a/keyboards/halfcliff/keymaps/via/rules.mk b/keyboards/halfcliff/keymaps/via/rules.mk
new file mode 100644
index 0000000000..1e5b99807c
--- /dev/null
+++ b/keyboards/halfcliff/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/halfcliff/matrix.c b/keyboards/halfcliff/matrix.c
new file mode 100644
index 0000000000..556b75ca59
--- /dev/null
+++ b/keyboards/halfcliff/matrix.c
@@ -0,0 +1,277 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+
+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 <stdint.h>
+#include <stdbool.h>
+#include "util.h"
+#include "matrix.h"
+#include "debounce.h"
+#include "quantum.h"
+#include "split_util.h"
+#include "config.h"
+#include "transport.h"
+
+#define ERROR_DISCONNECT_COUNT 5
+
+#define ROWS_PER_HAND (MATRIX_ROWS / 2)
+
+static pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+static pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+
+/* matrix state(1:on, 0:off) */
+static matrix_row_t raw_matrix[MATRIX_ROWS];  // raw values
+static matrix_row_t matrix[MATRIX_ROWS];      // debounced values
+
+// row offsets for each hand
+uint8_t thisHand, thatHand;
+
+// user-defined overridable functions
+__attribute__((weak)) void matrix_init_kb(void) { matrix_init_user(); }
+
+__attribute__((weak)) void matrix_scan_kb(void) { matrix_scan_user(); }
+
+__attribute__((weak)) void matrix_init_user(void) {}
+
+__attribute__((weak)) void matrix_scan_user(void) {}
+
+__attribute__((weak)) void matrix_slave_scan_user(void) {}
+
+matrix_row_t matrix_get_row(uint8_t row) { return matrix[row]; }
+
+void matrix_print(void) {}
+
+static inline void setPinOutput_writeLow(pin_t pin) {
+    ATOMIC_BLOCK_FORCEON {
+        setPinOutput(pin);
+        writePinLow(pin);
+    }
+}
+
+static inline void setPinInputHigh_atomic(pin_t pin) {
+    ATOMIC_BLOCK_FORCEON { setPinInputHigh(pin); }
+}
+
+// matrix code
+static void select_row(uint8_t row) { setPinOutput_writeLow(row_pins[row]); }
+
+static void unselect_row(uint8_t row) { setPinInputHigh_atomic(row_pins[row]); }
+
+static void unselect_rows(void) {
+    for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
+        setPinInputHigh_atomic(row_pins[x]);
+    }
+}
+
+static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
+    // Start with a clear matrix row
+    matrix_row_t current_row_value = 0;
+
+    // Select row
+    select_row(current_row);
+    wait_us(30);
+
+    // For each col...
+    for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
+        // Select the col pin to read (active low)
+        uint8_t pin_state = readPin(col_pins[col_index]);
+
+        // Populate the matrix row with the state of the col pin
+        current_row_value |= pin_state ? 0 : (MATRIX_ROW_SHIFTER << col_index);
+    }
+
+    // Unselect row
+    unselect_row(current_row);
+    if (current_row + 1 < MATRIX_ROWS) {
+    wait_us(30);  // wait for row signal to go HIGH
+    }
+
+    // If the row has changed, store the row and return the changed flag.
+    if (current_matrix[current_row] != current_row_value) {
+        current_matrix[current_row] = current_row_value;
+        return true;
+    }
+    return false;
+}
+
+static void select_col(uint8_t col) { setPinOutput_writeLow(col_pins[col]); }
+
+static void unselect_col(uint8_t col) { setPinInputHigh_atomic(col_pins[col]); }
+
+static void unselect_cols(void) {
+    for (uint8_t x = 0; x < MATRIX_COLS; x++) {
+        setPinInputHigh_atomic(col_pins[x]);
+    }
+}
+
+static void init_pins(void) {
+    unselect_rows();
+    for (uint8_t x = 0; x < MATRIX_COLS; x++) {
+        setPinInputHigh_atomic(col_pins[x]);
+    }
+    unselect_cols();
+    for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
+        setPinInputHigh_atomic(row_pins[x]);
+    }
+}
+
+static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
+    bool matrix_changed = false;
+
+    // Select col
+    select_col(current_col);
+    wait_us(30);
+
+    // For each row...
+    for (uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++) {
+        // Store last value of row prior to reading
+        matrix_row_t last_row_value    = current_matrix[row_index];
+        matrix_row_t current_row_value = last_row_value;
+
+        // Check row pin state
+        if (readPin(row_pins[row_index]) == 0) {
+            // Pin LO, set col bit
+            current_row_value |= (MATRIX_ROW_SHIFTER << current_col);
+        } else {
+            // Pin HI, clear col bit
+            current_row_value &= ~(MATRIX_ROW_SHIFTER << current_col);
+        }
+
+        // Determine if the matrix changed state
+        if ((last_row_value != current_row_value)) {
+            matrix_changed |= true;
+            current_matrix[row_index] = current_row_value;
+        }
+    }
+
+    // Unselect col
+    unselect_col(current_col);
+    if (current_col + 1 < MATRIX_COLS) {
+    wait_us(30);  // wait for col signal to go HIGH
+    }
+
+    return matrix_changed;
+}
+
+void matrix_init(void) {
+    split_pre_init();
+
+    // Set pinout for right half if pinout for that half is defined
+    if (!isLeftHand) {
+#ifdef DIRECT_PINS_RIGHT
+        const pin_t direct_pins_right[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS_RIGHT;
+        for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+            for (uint8_t j = 0; j < MATRIX_COLS; j++) {
+                direct_pins[i][j] = direct_pins_right[i][j];
+            }
+        }
+#endif
+#ifdef MATRIX_ROW_PINS_RIGHT
+        const pin_t row_pins_right[MATRIX_ROWS] = MATRIX_ROW_PINS_RIGHT;
+        for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+            row_pins[i] = row_pins_right[i];
+        }
+#endif
+#ifdef MATRIX_COL_PINS_RIGHT
+        const pin_t col_pins_right[MATRIX_COLS] = MATRIX_COL_PINS_RIGHT;
+        for (uint8_t i = 0; i < MATRIX_COLS; i++) {
+            col_pins[i] = col_pins_right[i];
+        }
+#endif
+    }
+
+    thisHand = isLeftHand ? 0 : (ROWS_PER_HAND);
+    thatHand = ROWS_PER_HAND - thisHand;
+
+    // initialize key pins
+    init_pins();
+
+    // initialize matrix state: all keys off
+    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+        raw_matrix[i] = 0;
+        matrix[i]     = 0;
+    }
+
+    debounce_init(ROWS_PER_HAND);
+
+    matrix_init_quantum();
+
+    split_post_init();
+}
+
+bool matrix_post_scan(void) {
+    bool changed = false;
+    if (is_keyboard_master()) {
+        static uint8_t error_count;
+
+        matrix_row_t slave_matrix[ROWS_PER_HAND] = {0};
+        if (!transport_master(matrix + thisHand, slave_matrix)) {
+            error_count++;
+
+            if (error_count > ERROR_DISCONNECT_COUNT) {
+                // reset other half if disconnected
+                for (int i = 0; i < ROWS_PER_HAND; ++i) {
+                    matrix[thatHand + i] = 0;
+                    slave_matrix[i]      = 0;
+                }
+
+                changed = true;
+            }
+        } else {
+            error_count = 0;
+
+            for (int i = 0; i < ROWS_PER_HAND; ++i) {
+                if (matrix[thatHand + i] != slave_matrix[i]) {
+                    matrix[thatHand + i] = slave_matrix[i];
+                    changed              = true;
+                }
+            }
+        }
+
+        matrix_scan_quantum();
+    } else {
+        transport_slave(matrix + thatHand, matrix + thisHand);
+
+        matrix_slave_scan_user();
+    }
+
+    return changed;
+}
+
+uint8_t matrix_scan(void) {
+    bool local_changed = false;
+    static matrix_row_t temp_raw_matrix[MATRIX_ROWS];  // temp raw values
+
+    // Set row, read cols
+    for (uint8_t current_row = 0; current_row < ROWS_PER_HAND/2; current_row++) {
+        local_changed |= read_cols_on_row(raw_matrix, current_row);
+    }
+
+    // Set col, read rows
+    for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
+        local_changed |= read_rows_on_col(temp_raw_matrix, current_col);
+    //Updated key matrix on lines 6-10 (or lines 16-20)
+        if(local_changed) {
+            for (uint8_t i = ROWS_PER_HAND/2; i < ROWS_PER_HAND; i++) {
+                raw_matrix[i] = temp_raw_matrix[i];
+            }
+        }
+    }
+
+    debounce(raw_matrix, matrix + thisHand, ROWS_PER_HAND, local_changed);
+
+    bool remote_changed = matrix_post_scan();
+    return (uint8_t)(local_changed || remote_changed);
+}
diff --git a/keyboards/halfcliff/readme.md b/keyboards/halfcliff/readme.md
new file mode 100644
index 0000000000..37e8d85c20
--- /dev/null
+++ b/keyboards/halfcliff/readme.md
@@ -0,0 +1,19 @@
+# halfcliff
+
+![halfcliff](https://user-images.githubusercontent.com/54104281/125184713-0b096b00-e25b-11eb-8237-5f4d2a286bc4.jpg)
+
+Halfcliff keyboard is a split keyboard using a single-sided board.
+
+* Keyboard Maintainer: [n2](https://github.com/N2-Sumikko)
+* Hardware Supported:  halfcliff PCB, Pro Micro
+* Hardware Availability: [PCB & Plate Data](https://github.com/N2-Sumikko/HalfCliff.git)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make halfcliff:default
+
+Flashing example for this keyboard:
+
+    make halfcliff:default:flash
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
diff --git a/keyboards/halfcliff/rules.mk b/keyboards/halfcliff/rules.mk
new file mode 100644
index 0000000000..f8883f6a47
--- /dev/null
+++ b/keyboards/halfcliff/rules.mk
@@ -0,0 +1,29 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = caterina
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = no       # Mouse keys
+EXTRAKEY_ENABLE = no       # Audio control and System control
+CONSOLE_ENABLE = no        # Console for debug
+COMMAND_ENABLE = no        # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # USB Nkey Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no       # Enable Bluetooth
+AUDIO_ENABLE = no           # Audio output
+SPLIT_KEYBOARD = yes
+ENCODER_ENABLE = no
+POINTING_DEVICE_ENABLE = no
+CUSTOM_MATRIX = yes
+OLED_DRIVER_ENABLE = no
+
+SRC += matrix.c