[Keyboard] Wheatfield Split75 (#8511)

* Added split75 keyboard

* tidy up commented out code + removed default

* added visual map

* proper led functions. more layers for keymap

* led functions. moved mod keys to numbers

* double tapping toggle + leds on power on

* media keys fix

* clean up of commented out code and unnecessary functions. readme update.
default keymap

* removed bootloadHID file

* Update keyboards/split75/config.h

* Update keyboards/split75/config.h

* Update keyboards/split75/config.h

* Update keyboards/split75/config.h

* removed python flashing script

* Update keyboards/split75/keymaps/default/keymap.c

* Update keyboards/split75/split75.h

* Update keyboards/split75/keymaps/art/keymap.c

* Update keyboards/split75/keymaps/art/keymap.c

* Update keyboards/split75/keymaps/art/keymap.c

* Update keyboards/split75/keymaps/default/keymap.c

* reintroduced empty matrix_scan_user to default keymap

* Update keyboards/split75/keymaps/art/keymap.c

* Update keyboards/split75/keymaps/art/keymap.c

* Update keyboards/split75/usbconfig.h

* Update keyboards/ergodone/config.h

* Update keyboards/split75/keymaps/art/keymap.c

* updated readme file

* Update keyboards/split75/usbconfig.h

* Update keyboards/split75/rules.mk

* Update keyboards/split75/split75.c

* code fix after suggestions

* defined tapping toggle as double tap

* added info.json

* Update keyboards/split75/config.h

* fix for leds not displaying properly when initialising

* Update keyboards/split75/README.md

* Update keyboards/split75/keymaps/default/keymap.c

* Update keyboards/split75/keymaps/art/keymap.c

* changed product description fields

* renamed user functions

* indentation fix

* Update keyboards/split75/usbconfig.h

* Update keyboards/split75/usbconfig.h

* Update keyboards/split75/usbconfig.h

* Update keyboards/split75/usbconfig.h

* Update keyboards/split75/usbconfig.h

* Update keyboards/split75/split75.c

* Update keyboards/split75/split75.c

* art keymap update

* Update keyboards/split75/config.h

* Update keyboards/split75/keymaps/art/keymap.c

* Update keyboards/split75/keymaps/art/keymap.c

* Update keyboards/split75/keymaps/art/keymap.c

* Update keyboards/split75/keymaps/art/keymap.c

* Update keyboards/split75/keymaps/art/keymap.c

* Update keyboards/split75/split75.c

* Update keyboards/split75/keymaps/art/keymap.c

* Update keyboards/split75/keymaps/default/keymap.c

* Update keyboards/split75/split75.c

* Update keyboards/split75/matrix.c

* Update keyboards/split75/rules.mk

* Update keyboards/split75/split75.c

* Update keyboards/split75/split75.c

* Update keyboards/split75/split75.c

* Update keyboards/split75/config.h

* Update keyboards/split75/split75.c

* disable underglow on sleep and enabled backlighting

* Update keyboards/split75/usbconfig.h

* Update keyboards/split75/usbconfig.h

* Update keyboards/split75/usbconfig.h

* Update keyboards/split75/usbconfig.h

* Update keyboards/split75/usbconfig.h

* Update keyboards/split75/usbconfig.h

* personal keymap update

* changed boot animation

* consistent whitespace

* Tidied up default notes and unnecessary comments

* Unique Vendor ID

* remove usb config file

* corrected manufacturer

* Update keyboards/split75/config.h

* Update keyboards/split75/README.md

* Update keyboards/split75/split75.c

* Update keyboards/split75/split75.c

* Update keyboards/split75/split75.c

* Update keyboards/split75/split75.c

* Update keyboards/split75/split75.c

* Update keyboards/split75/split75.c

* Update keyboards/split75/split75.h

* Update keyboards/split75/split75.h

* Update keyboards/split75/split75.h

* Update keyboards/split75/split75.c

* Update keyboards/split75/matrix.c

* Update keyboards/split75/matrix.c

* Update keyboards/split75/matrix.c

* Update keyboards/split75/matrix.c

* Update keyboards/split75/split75.h

* Personal keymap restore after refactor

* Moved to wheatfield folder + updated readme

keyboards/wheatfield/split75/README.md

@@ -0,0 +1,28 @@
+# split75
+
+![split75](https://i1.wp.com/mechboards.co.uk/wp-content/uploads/2019/10/HTB1qf0aSOLaK1RjSZFxq6ymPFXae.jpg)
+
+This is a port of the QMK firmware for the split75 keyboard, also known as the ve.a taobao split clone. It runs on
+ps2avrGB firmware, like the [ps2avrGB keyboard](https://www.keyclack.com/product/gb-ps2avrgb/) or the ones sold
+by [Winkeyless](http://winkeyless.kr/product/ps2avrgb-parts/).
+
+Original work performed by Michael L. Walker, all credit goes to him. I've tidied up the keymap (removed 3 extra keys), a couple of functions, info.json and this Readme.
+
+* Keyboard Maintainer: [Michael L. Walker](https://github.com/walkerstop)
+* Hardware Availability: https://a.aliexpress.com/_BT9raf https://item.taobao.com/item.htm?id=556970472669&toSite=main
+
+Make example for this keyboard (after setting up your build environment):
+
+    make wheatfield/split75:default
+
+Flashing example for this keyboard ([after setting up the bootloadHID flashing environment](https://docs.qmk.fm/#/flashing_bootloadhid))
+
+    make wheatfield/split75:default:flash
+
+or
+
+    bootloadHID -r split75_default.hex
+
+**Reset Key**: Hold down the key located at 3rd left position in the bottom row, commonly programmed as Left Control while plugging in the keyboard.
+
+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).

keyboards/wheatfield/split75/config.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#define VENDOR_ID       0x594D
+#define PRODUCT_ID      0x0001
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    YMDK
+#define PRODUCT         Split75
+#define DESCRIPTION     VE.A Clone
+
+/* matrix size */
+#define MATRIX_ROWS 8
+#define MATRIX_COLS 14
+
+#define RGBLED_NUM 8
+#define RGBLIGHT_ANIMATIONS
+#define RGBLIGHT_SLEEP
+
+#define BACKLIGHT_PIN D4

keyboards/wheatfield/split75/keymaps/art/keymap.c

@@ -0,0 +1,189 @@
+#include QMK_KEYBOARD_H
+
+enum layer_names {
+    BASE,
+    QWERTY_MOD,
+    QWERTY,
+    WORKMAN,
+    MOD,
+    MEDIA
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+  /* Base          ,-----------------------------------------.     ,-----------------------------------------------------.
+  *                | ESC | F1  | F2  | F3  | F4  | F5  | F6  |     | F7  | F8  | F9  | F10 | F11 | F12 |Print| Ins | Home|
+  * ,-----------.  |-----+-----+-----+-----+-----+-----+-----|     |-----+-----+-----+-----+-----+-----+-----------+-----|
+  * |  8  |  9  |  |  ~  |  1  |  2  |  3  |  4  |  5  |  6  |     |  7  |  8  |  9  |  0  |  -  |  =  | Backspac  | Del |
+  * |-----+-----|  |-----------------------------------------'  ,--------------------------------------------------+-----|
+  * |  6  |  7  |  | Tab   |  Q  |  W  |  E  |  R  |  T  |     |  Y  |  U  |  I  |  O  |  P  |  [  |  ]  |    \    | End |
+  * |-----+-----|  |---------------------------------------.    `--------------------------------------------------+-----|
+  * |  4  |  5  |  | Caps    |  A  |  S  |  D  |  F  |  G  |     |  H  |  J  |  K  |  L  |  ;  |  '  |    Enter    | PgUp|
+  * |-----+-----|  |-----------------------------------------.   `-------------------------------------------------+-----|
+  * |  2  |  3  |  | Shift     |  Z  |  X  |  C  |  V  |  B  |     |  N  |  M  |  ,  |  .  |   /   |  Shift  | Up  | PgDn|
+  * |-----+-----|  |-----------------------------------------'   ,-------------------------------------------+-----+-----|
+  * |  0  |  1  |  | Ctrl  |  GUI |  Alt |   Space   |Space|     | Space         |  Alt  |QW_ON| Ctrl  | Left| Down|Right|
+  * `-----------'  `---------------------------------------'     `-------------------------------------------------------'
+  */
+  [BASE] = LAYOUT(
+//--------------------------------Left Hand-----------------------------------| |--------------------------------Right Hand------------------------------------------------
+                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_PSCR,  KC_INS,  KC_HOME,
+KC_8,  KC_9,    KC_GRAVE, KC_1,    KC_2,    KC_3,   KC_4,   KC_5,   KC_6,                 KC_7,   KC_8,    KC_9,   KC_0,    KC_MINUS, KC_EQUAL, KC_BSPC,           KC_DEL,
+KC_6,  KC_7,    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_END,
+KC_4,  KC_5,    KC_CAPS,  KC_A,    KC_S,    KC_D,   KC_F,   KC_G,                 KC_H,   KC_J,   KC_K,    KC_L,   KC_SCLN, KC_QUOT,  KC_ENTER,                    KC_PGUP,
+KC_2,  KC_3,    KC_LSFT,  KC_Z,    KC_X,    KC_C,   KC_V,   KC_B,                 KC_N,   KC_M,   KC_COMM, KC_DOT, KC_SLSH,                     KC_RSFT,  KC_UP,   KC_PGDN,
+KC_0,  KC_1,    KC_LCTL,  KC_LGUI, KC_LALT, KC_SPC, KC_SPC,                       KC_SPC,         KC_RALT, MO(QWERTY_MOD),  KC_RCTL,            KC_LEFT,  KC_DOWN, KC_RIGHT
+  ),
+
+  /*QWERT On + Mod ,-----------------------------------------.     ,-----------------------------------------------------.
+  *                |     |     |     |     |     |     |     |     |     |     |     |     |     |     |     |     |     |
+  * ,-----------.  |-----+-----+-----+-----+-----+-----+-----|     |-----+-----+-----+-----+-----+-----+-----------+-----|
+  * |     |     |  |     |     |     |     |     |     |     |     |     |     |     |     |     |     |           |     |
+  * |-----+-----|  |-----------------------------------------'  ,--------------------------------------------------+-----|
+  * |     |     |  |       |MePrv| Vol+|MeNxt|     |     |     |     |     |     |     |     |     |     |         |     |
+  * |-----+-----|  |---------------------------------------.    `--------------------------------------------------+-----|
+  * |     |     |  |         |     | Vol-|     |     |     |     |     |     |     |     |     |     |             |     |
+  * |-----+-----|  |-----------------------------------------.   `-------------------------------------------------+-----|
+  * |     |     |  |           |     | Vol0|MePly|     |     |     |     |     |     |     |       |         |     |     |
+  * |-----+-----|  |-----------------------------------------'   ,-------------------------------------------+-----+-----|
+  * |     |     |  | QWERTY |      |      |           |     |     |               |       |     |       |     |     |    |
+  * `-----------'  `---------------------------------------'     `-------------------------------------------------------'
+  */
+  [QWERTY_MOD] = LAYOUT(
+//--------------------------------Left Hand-----------------------------------------------| |--------------------------------Right Hand------------------------------------------------
+                      _______,  _______,  _______,  _______,  _______,  _______,  _______,              _______,   _______,  _______,  _______,  _______,  _______,  _______,  _______, _______,
+_______,  _______,    _______,  _______,  _______,  _______,  _______,  _______,  _______,              _______,   _______,  _______,  _______,  _______,  _______,  _______,           _______,
+_______,  _______,    _______,  KC_MPRV,  KC_VOLU,  KC_MNXT,  _______,  _______,              _______,  _______,   _______,  _______,  _______,  _______,  _______,  _______,           _______,
+_______,  _______,    _______,  _______,  KC_VOLD,  _______,  _______,  _______,              _______,  _______,   _______,  _______,  _______,  _______,  _______,                     _______,
+_______,  _______,    _______,  _______,  KC_MUTE,  KC_MPLY,  _______,  _______,              _______,  _______,   _______,  _______,  _______,                      _______, _______,  _______,
+_______,  _______,    TO(QWERTY),_______, _______,  _______,  _______,                        _______,             _______, _______,   _______,                      _______, _______,  _______
+  ),
+
+  /* QWERTY        ,-----------------------------------------.     ,-----------------------------------------------------.
+  *                | ESC | F1  | F2  | F3  | F4  | F5  | F6  |     | F7  | F8  | F9  | F10 | F11 | F12 |Print| Ins | Home|
+  * ,-----------.  |-----+-----+-----+-----+-----+-----+-----|     |-----+-----+-----+-----+-----+-----+-----------+-----|
+  * |  8  |  9  |  |  ~  |  1  |  2  |  3  |  4  |  5  |  6  |     |  7  |  8  |  9  |  0  |  -  |  =  | Backspac  | Del |
+  * |-----+-----|  |-----------------------------------------'  ,--------------------------------------------------+-----|
+  * |  6  |  7  |  | Tab   |  Q  |  W  |  E  |  R  |  T  |     |  Y  |  U  |  I  |  O  |  P  |  [  |  ]  |    \    | End |
+  * |-----+-----|  |---------------------------------------.    `--------------------------------------------------+-----|
+  * |  4  |  5  |  | Caps    |  A  |  S  |  D  |  F  |  G  |     |  H  |  J  |  K  |  L  |  ;  |  '  |    Enter    | PgUp|
+  * |-----+-----|  |-----------------------------------------.   `-------------------------------------------------+-----|
+  * |  2  |  3  |  | Shift     |  Z  |  X  |  C  |  V  |  B  |     |  N  |  M  |  ,  |  .  |   /   |  Shift  | Up  | PgDn|
+  * |-----+-----|  |-----------------------------------------'   ,-------------------------------------------+-----+-----|
+  * |  0  |  1  |  | Ctrl  |  GUI |  Alt |Spac/MEDIA | BSPC|     |      MOD      |  Alt  | MOD | Ctrl  | Left| Down|Right|
+  * `-----------'  `---------------------------------------'     `-------------------------------------------------------'
+  */
+  [QWERTY] = LAYOUT(
+//--------------------------------Left Hand------------------------------------| |--------------------------------Right Hand------------------------------------------------
+                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_PSCR,  KC_INS,  KC_HOME,
+KC_8,  KC_9,    KC_GRAVE, KC_1,    KC_2,    LGUI_T(KC_3),   LALT_T(KC_4),   LCTL_T(KC_5),   KC_6,                 KC_7,   LCTL_T(KC_8),    LALT_T(KC_9),   LGUI_T(KC_0),    KC_MINUS, KC_EQUAL, KC_BSPC,           KC_DEL,
+KC_6,  KC_7,    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_END,
+KC_4,  KC_5,    KC_CAPS,  KC_A,    KC_S ,KC_D ,KC_F ,KC_G,   KC_H,   KC_J, KC_K, KC_L, KC_SCLN,KC_QUOT,KC_ENTER,         KC_PGUP,
+KC_2,  KC_3,    KC_LSFT,  KC_Z,    KC_X,    KC_C,   KC_V,   KC_B,                 KC_N,   KC_M,   KC_COMM, KC_DOT, KC_SLSH,                     KC_RSFT,  KC_UP,   KC_PGDN,
+KC_0,  KC_1,    KC_LCTL,  KC_LGUI, KC_LALT, LT(MEDIA, KC_SPC),KC_BSPC,            MO(MOD),        KC_RALT, MO(MOD),KC_RCTL,                     KC_LEFT,  KC_DOWN, KC_RIGHT
+  ),
+
+  /*    WORKMAN    ,-----------------------------------------.     ,-----------------------------------------------------.
+  *                |     |     |     |     |     |     |     |     |     |     |     |     |     |     |     |     |     |
+  * ,-----------.  |-----+-----+-----+-----+-----+-----+-----|     |-----+-----+-----+-----+-----+-----+-----------+-----|
+  * |     |     |  |     |     |     |     |     |     |     |     |     |     |     |     |     |     |           |     |
+  * |-----+-----|  |-----------------------------------------'  ,--------------------------------------------------+-----|
+  * |     |     |  |       |     |     |     |     |     |     |     |     |     |     |     |     |     |         |     |
+  * |-----+-----|  |---------------------------------------.    `--------------------------------------------------+-----|
+  * |     |     |  |         |     |     |     |     |     |     |     |     |     |     |     |     |             |     |
+  * |-----+-----|  |-----------------------------------------.   `-------------------------------------------------+-----|
+  * |     |     |  |           |     |     |     |     |     |     |     |     |     |     |       |         |     |     |
+  * |-----+-----|  |-----------------------------------------'   ,-------------------------------------------+-----+-----|
+  * |     |     |  | BASE  |      |      |           |     |     |               |       |     |       |     |     |     |
+  * `-----------'  `---------------------------------------'     `-------------------------------------------------------'
+  */
+  [WORKMAN] = LAYOUT(
+//--------------------------------Left Hand-----------------------------------------------| |--------------------------------Right Hand------------------------------------------------
+                      _______,  _______,  _______,  _______,  _______,  _______,  _______,              _______,   _______,  _______,  _______,  _______,  _______,  _______,  _______, _______,
+_______,  _______,    _______,  _______,  _______,  _______,  _______,  _______,  _______,              _______,   _______,  _______,  _______,  _______,  _______,  _______,           _______,
+_______,  _______,    _______,  KC_Q,     KC_D,		KC_R,     KC_W,     KC_B,              KC_J,   KC_F,		KC_U,   KC_P,   KC_SCLN,_______,_______,  _______,           _______,
+_______,  _______,    _______,  KC_A,     KC_S,		KC_H,     KC_T,     KC_G,              KC_Y,   KC_N,		KC_E,   KC_O,   KC_I,  _______,  _______,           _______,
+_______,  _______,    _______,  KC_Z,     KC_X,		KC_C,     KC_V,     KC_M,              KC_K,   KC_L,		KC_COMM,KC_DOT, KC_SLSH,                      _______, _______,  _______,
+_______,  _______,    TO(BASE), _______,_______,_______, _______,                        _______,             _______, TO(QWERTY),   _______,            _______, _______,  _______
+  ),
+  
+  /*    MOD        ,-----------------------------------------.     ,-----------------------------------------------------.
+  *                |     |     |     |     |     |     |     |     |     |     |     |     |     |     |     |     |     |
+  * ,-----------.  |-----+-----+-----+-----+-----+-----+-----|     |-----+-----+-----+-----+-----+-----+-----------+-----|
+  * |     |     |  |     |     |     |     |     |     |     |     |     |     |     |     |     |     |           |     |
+  * |-----+-----|  |-----------------------------------------'  ,--------------------------------------------------+-----|
+  * |     |     |  |       |     |     |     |     |     |     |     |     |     |     |     |     |     |         |     |
+  * |-----+-----|  |---------------------------------------.    `--------------------------------------------------+-----|
+  * |     |     |  |         |     |     |     |     |     |     |     |     |     |     |     |     |             |     |
+  * |-----+-----|  |-----------------------------------------.   `-------------------------------------------------+-----|
+  * |     |     |  |           |     |     |     |     |     |     |     |     |     |     |       |         |     |     |
+  * |-----+-----|  |-----------------------------------------'   ,-------------------------------------------+-----+-----|
+  * |     |     |  | BASE  |      |      |           |     |     |               |       |     |       |     |     |     |
+  * `-----------'  `---------------------------------------'     `-------------------------------------------------------'
+  */
+  [MOD] = LAYOUT(
+//--------------------------------Left Hand-----------------------------------------------| |--------------------------------Right Hand------------------------------------------------
+                      _______,  _______,  _______,  _______,  _______,  _______,  _______,              _______,   _______,  _______,  _______,  _______,  _______,  _______,  _______, _______,
+_______,  _______,    _______,  _______,  _______,  _______,  _______,  _______,  _______,              _______,   _______,  _______,  _______,  _______,  _______,  _______,           _______,
+_______,  _______,    _______,  _______,  KC_HOME,  KC_UP,    KC_END,   KC_PGUP,              _______,  KC_MS_BTN1,KC_MS_UP, KC_MS_BTN3,KC_MS_BTN2,_______,_______,  _______,           _______,
+_______,  _______,    _______,  _______,  KC_LEFT,  KC_DOWN,  KC_RIGHT, KC_PGDOWN,              _______,KC_MS_LEFT,KC_MS_DOWN,KC_MS_RIGHT,KC_APPLICATION,  _______,  _______,           _______,
+_______,  _______,    _______,  _______,  _______,  _______,  _______,  _______,              _______,  _______,   _______,  _______,  _______,                      _______, _______,  _______,
+_______,  TO(WORKMAN),TO(BASE), KC_MS_ACCEL0,KC_MS_ACCEL1,KC_MS_ACCEL2, _______,                        _______,             _______, _______,   _______,            _______, _______,  _______
+  ),
+  
+  /*    MEDIA      ,-----------------------------------------.     ,-----------------------------------------------------.
+  *                |     |     |     |     |     |     |     |     |     |     |     |     |     |     |     |     |     |
+  * ,-----------.  |-----+-----+-----+-----+-----+-----+-----|     |-----+-----+-----+-----+-----+-----+-----------+-----|
+  * |     |     |  |     |     |     |     |     |     |     |     |     |     |     |     |     |     |           |     |
+  * |-----+-----|  |-----------------------------------------'  ,--------------------------------------------------+-----|
+  * |     |     |  |       |     |     |     |     |     |     |     |     |     |     |     |     |     |         |     |
+  * |-----+-----|  |---------------------------------------.    `--------------------------------------------------+-----|
+  * |     |     |  |         |     |     |     |     |     |     |     |     |     |     |     |     |             |     |
+  * |-----+-----|  |-----------------------------------------.   `-------------------------------------------------+-----|
+  * |     |     |  |           |     |     | Play|     |     |     |     |     |     |     |       |         |     |     |
+  * |-----+-----|  |-----------------------------------------'   ,-------------------------------------------+-----+-----|
+  * |     |     |  | BASE  |      |      |           |     |     |               |       |     |       |     |     |     |
+  * `-----------'  `---------------------------------------'     `-------------------------------------------------------'
+  */
+  [MEDIA] = LAYOUT(
+//--------------------------------Left Hand-----------------------------------------------| |--------------------------------Right Hand------------------------------------------------
+                      _______,  _______,  _______,  _______,  _______,  _______,  _______,              _______,   _______,  _______,  _______,  _______,  _______,  _______,  _______, _______,
+_______,  _______,    _______,  _______,  _______,  _______,  _______,  _______,  _______,              _______,   _______,  _______,  _______,  _______,  _______,  _______,           _______,
+_______,  _______,    _______,  KC_MPRV,  KC_VOLU,  KC_MNXT,  _______,  _______,              _______,  _______,   _______,  _______,  _______,  _______,  _______,  _______,           _______,
+_______,  _______,    _______,  _______,  KC_VOLD,  _______,  _______,  _______,              _______,  _______,   _______,  _______,  _______,  _______,  _______,                     _______,
+_______,  _______,    _______,  _______,  KC_MUTE,  KC_MPLY,  _______,  _______,              _______,  _______,   _______,  _______,  _______,                      _______, _______,  _______,
+_______,  _______,    _______,  _______,  _______,  _______,  _______,                        _______,             _______, _______,   _______,                      _______, _______,  _______
+  )
+};
+
+bool led_update_user(led_t led_state) {
+    writePin(CAPSLOCK_LED_PIN, led_state.caps_lock);
+    return false;
+}
+
+void keyboard_pre_init_user(void) {
+    writePinHigh(SCROLLLOCK_LED_PIN);
+    wait_ms(50);
+    writePinHigh(CAPSLOCK_LED_PIN);
+    wait_ms(50);
+    writePinHigh(NUMLOCK_LED_PIN);
+    wait_ms(50);
+    writePinLow(SCROLLLOCK_LED_PIN);
+    wait_ms(50);
+    writePinLow(CAPSLOCK_LED_PIN);
+    wait_ms(50);
+    writePinLow(NUMLOCK_LED_PIN);
+	
+	layer_state_set_user(layer_state);
+}
+
+layer_state_t layer_state_set_user(layer_state_t state) {
+    writePinLow(NUMLOCK_LED_PIN);
+    writePinLow(SCROLLLOCK_LED_PIN);
+    switch (get_highest_layer(state)) {
+    case BASE:
+        writePinHigh(SCROLLLOCK_LED_PIN);
+        break;
+    }
+    return state;
+}

keyboards/wheatfield/split75/keymaps/default/keymap.c

@@ -0,0 +1,30 @@
+#include QMK_KEYBOARD_H
+
+#define BASE 0
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+  /* Base          ,-----------------------------------------.     ,-----------------------------------------------------.
+  *                | ESC | F1  | F2  | F3  | F4  | F5  | F6  |     | F7  | F8  | F9  | F10 | F11 | F12 |Print| Ins | Del |
+  * ,-----------.  |-----+-----+-----+-----+-----+-----+-----|     |-----+-----+-----+-----+-----+-----+-----------+-----|
+  * |  8  |  9  |  |  ~  |  1  |  2  |  3  |  4  |  5  |  6  |     |  7  |  8  |  9  |  0  |  -  |  =  | Backspac  | Home|
+  * |-----+-----|  |-----------------------------------------'  ,--------------------------------------------------+-----|
+  * |  6  |  7  |  | Tab   |  Q  |  W  |  E  |  R  |  T  |     |  Y  |  U  |  I  |  O  |  P  |  [  |  ]  |    \    | PgUp|
+  * |-----+-----|  |---------------------------------------.    `--------------------------------------------------+-----|
+  * |  4  |  5  |  | Caps    |  A  |  S  |  D  |  F  |  G  |     |  H  |  J  |  K  |  L  |  ;  |  '  |    Enter    | PgDn|
+  * |-----+-----|  |-----------------------------------------.   `-------------------------------------------------+-----|
+  * |  2  |  3  |  | Shift     |  Z  |  X  |  C  |  V  |  B  |     |  N  |  M  |  ,  |  .  |   /   |  Shift  | Up  | End |
+  * |-----+-----|  |-----------------------------------------'   ,-------------------------------------------+-----+-----|
+  * |  0  |  1  |  | Ctrl  |  GUI |  Alt |   Space   |Space|     | Space         |  Alt  |     | Ctrl  | Left| Down|Right|
+  * `-----------'  `---------------------------------------'     `-------------------------------------------------------'
+  */
+  [BASE] = LAYOUT(
+//--------------------------------Left Hand-----------------------------------| |--------------------------------Right Hand------------------------------------------------
+                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_PSCR,  KC_INS,  KC_DEL,
+KC_8,  KC_9,    KC_GRAVE, KC_1,    KC_2,    KC_3,   KC_4,   KC_5,   KC_6,                 KC_7,   KC_8,    KC_9,   KC_0,    KC_MINUS, KC_EQUAL, KC_BSPC,           KC_HOME,
+KC_6,  KC_7,    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_PGUP,
+KC_4,  KC_5,    KC_CAPS,  KC_A,    KC_S,    KC_D,   KC_F,   KC_G,                 KC_H,   KC_J,   KC_K,    KC_L,   KC_SCLN, KC_QUOT,  KC_ENTER,                    KC_PGDN,
+KC_2,  KC_3,    KC_LSFT,  KC_Z,    KC_X,    KC_C,   KC_V,   KC_B,                 KC_N,   KC_M,   KC_COMM, KC_DOT, KC_SLSH,                     KC_RSFT,  KC_UP,   KC_END,
+KC_0,  KC_1,    KC_LCTL,  KC_LGUI, KC_LALT, KC_SPC, KC_SPC,                       KC_SPC,         KC_RALT, _______,KC_RCTL,               KC_LEFT,  KC_DOWN, KC_RIGHT
+  )
+};

keyboards/wheatfield/split75/matrix.c

@@ -0,0 +1,155 @@
+/*
+Copyright 2017 Luiz Ribeiro <luizribeiro@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 <string.h>
+#include <stdio.h>
+#include "quantum.h"
+#include "i2c_master.h"
+#include "split75.h"
+
+#define RIGHT_HALF
+
+
+void matrix_set_row_status(uint8_t row);
+
+
+#if defined(RIGHT_HALF)
+#define I2C_TIMEOUT     10
+#define MCP23018_TWI_ADDRESS 0b0100000
+#define TW_READ        1
+#define TW_WRITE    0
+#define TWI_ADDR_WRITE ( (MCP23018_TWI_ADDRESS<<1) | TW_WRITE )
+#define TWI_ADDR_READ  ( (MCP23018_TWI_ADDRESS<<1) | TW_READ  )
+#define IODIRA 0x00  // i/o direction register
+#define IODIRB 0x01
+#define IODIRA 0x00  // i/o direction register
+#define IODIRB 0x01
+#define GPPUA  0x0C  // GPIO pull-up resistor register
+#define GPPUB  0x0D
+#define GPIOA  0x12  // general purpose i/o port register (write modifies OLAT)
+#define GPIOB  0x13
+#define OLATA  0x14  // output latch register
+#define OLATB  0x15
+#define MCP_ROWS_START    8
+
+static uint8_t mcp23018_init(void) {
+    uint8_t ret;
+    uint8_t data[3];
+    // set pin direction
+    // - unused  : input  : 1
+    // - input   : input  : 1
+    // - driving : output : 0
+    data[0] = IODIRA;
+    data[1] = 0b00000000;  // IODIRA
+    data[2] = (0b11111111);  // IODIRB
+
+    ret = i2c_transmit(TWI_ADDR_WRITE, (uint8_t *)data, 3, I2C_TIMEOUT);
+    if (ret) goto out;  // make sure we got an ACK
+
+    // set pull-up
+    // - unused  : on  : 1
+    // - input   : on  : 1
+    // - driving : off : 0
+    data[0] = GPPUA;
+    data[1] = 0b00000000;  // IODIRA
+    data[2] = (0b11111111);  // IODIRB
+
+    ret = i2c_transmit(TWI_ADDR_WRITE, (uint8_t *)data, 3, I2C_TIMEOUT);
+    if (ret) goto out;  // make sure we got an ACK
+
+    // set logical value (doesn't matter on inputs)
+    // - unused  : hi-Z : 1
+    // - input   : hi-Z : 1
+    // - driving : hi-Z : 1
+    data[0] = OLATA;
+    data[1] = 0b11111111;  // IODIRA
+    data[2] = (0b11111111);  // IODIRB
+
+    ret = i2c_transmit(TWI_ADDR_WRITE, (uint8_t *)data, 3, I2C_TIMEOUT);
+
+out:
+    return ret;
+}
+#endif
+
+void matrix_init_custom(void) {
+    // Set rows as output starting high
+    DDRB = 0xFF;
+    PORTB = 0xFF;
+
+    // Set columns as inputs with pull-up enabled
+    DDRA = 0x00;
+    PORTA = 0xFF;
+
+    // Initialize i2c communication
+    i2c_init();
+
+#if defined(RIGHT_HALF)
+    // Initialize the chip on the other half
+    mcp23018_init();
+#endif
+
+}
+
+bool matrix_scan_custom(matrix_row_t current_matrix[]) {
+    bool matrix_has_changed = false;
+
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        // Store last value of row prior to reading
+        matrix_row_t last_row_value = current_matrix[row];
+
+        matrix_row_t cols = 0;
+	    // Select the row to scan
+        matrix_set_row_status(row);
+
+        matrix_io_delay();
+	    //Set the local row
+
+#if defined(RIGHT_HALF)
+		// Initialize to 0x7F in case I2C read fails, 
+		// as 0x75 would be no keys pressed
+		uint8_t data = 0x7F;
+		// Receive the columns from right half
+		i2c_receive(TWI_ADDR_WRITE, &data, 1, I2C_TIMEOUT);
+#endif
+
+        cols |= ((~(PINA | 0x80)) & 0x7F);
+#if defined(RIGHT_HALF)
+		cols |= (((~(data | 0x80)) & 0x7F) << 7);
+#endif
+
+        current_matrix[row] = cols;
+        matrix_has_changed |= (last_row_value != current_matrix[row]);
+    }
+
+    return matrix_has_changed;
+}
+
+void matrix_set_row_status(uint8_t row) {
+#if defined(RIGHT_HALF)
+    uint8_t txdata[3];
+
+    //Set the remote row on port A
+    txdata[0] = (GPIOA);
+    txdata[1] = ( 0xFF & ~(1<<row) );
+    i2c_transmit(TWI_ADDR_WRITE, (uint8_t *)txdata, 2, I2C_TIMEOUT);
+#endif
+
+    //Set the local row on port B
+    DDRB = (1 << row);
+    PORTB = ~(1 << row);
+}

keyboards/wheatfield/split75/rules.mk

@@ -0,0 +1,31 @@
+# MCU name
+MCU = atmega32a
+
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = bootloadHID
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = no        # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
+WS2812_DRIVER = i2c
+
+OPT_DEFS = -DDEBUG_LEVEL=0
+
+# custom matrix setup
+CUSTOM_MATRIX = lite
+SRC = matrix.c
+QUANTUM_LIB_SRC += i2c_master.c

keyboards/wheatfield/split75/split75.c

@@ -0,0 +1,25 @@
+#include "split75.h"
+
+#include "i2c_master.h"
+
+
+void keyboard_pre_init_kb(void) {
+    led_init_ports();
+    keyboard_pre_init_user();
+}
+
+void led_init_ports(void) {
+    setPinOutput(NUMLOCK_LED_PIN);
+    setPinOutput(CAPSLOCK_LED_PIN);
+    setPinOutput(SCROLLLOCK_LED_PIN);
+}
+
+bool led_update_kb(led_t led_state) {
+    bool res = led_update_user(led_state);
+    if(res) {
+        writePin(NUMLOCK_LED_PIN, led_state.num_lock);
+        writePin(CAPSLOCK_LED_PIN, led_state.caps_lock);
+        writePin(SCROLLLOCK_LED_PIN, led_state.scroll_lock);
+    }
+    return res;
+}

keyboards/wheatfield/split75/split75.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include "quantum.h"
+
+// Number of keys in rows
+// 0 + 7 / 9
+// 2 + 7 / 8
+// 2 + 6 / 9
+// 2 + 6 / 8
+// 2 + 6 / 8
+// 2 + 5 / 7
+
+#define LAYOUT( \
+            K05, K15, K25, K35, K45, K55, K65, K75, K85, K95, K105, K115, K125, K135, K86, K87, \
+  K47, K46, K04, K14, K24, K34, K44, K54, K64, K74, K84, K94, K104, K114, K124,       K96, K97, \
+  K37, K36, K03, K13, K23, K33, K43, K53,      K73, K83, K93, K103, K113, K123, K133, K106, K107, \
+  K27, K26, K02, K12, K22, K32, K42, K52,      K72, K82, K92, K102, K112, K122,       K116, K117, \
+  K17, K16, K01,      K21, K31, K41, K51, K61, K71, K81, K91, K101, K111,       K131, K126, K127, \
+  K07, K06, K00, K10, K20, K30, K40,           K70,           K100, K110, K120, K130, K136, K137  \
+){ \
+  { K00,    K10,    K20,    K30,    K40,    KC_NO,  KC_NO,  K70,    KC_NO,  KC_NO,  K100,   K110,   K120,   K130 }, \
+  { K01,    KC_NO,  K21,    K31,    K41,    K51,    K61,    K71,    K81,    K91,    K101,   K111,   KC_NO,  K131 }, \
+  { K02,    K12,    K22,    K32,    K42,    K52,    KC_NO,  K72,    K82,    K92,    K102,   K112,   K122,        }, \
+  { K03,    K13,    K23,    K33,    K43,    K53,    KC_NO,  K73,    K83,    K93,    K103,   K113,   K123,   K133 }, \
+  { K04,    K14,    K24,    K34,    K44,    K54,    K64,    K74,    K84,    K94,    K104,   K114,   K124,        }, \
+  { K05,    K15,    K25,    K35,    K45,    K55,    K65,    K75,    K85,    K95,    K105,   K115,   K125,   K135 }, \
+  { K06,    K16,    K26,    K36,    K46,    KC_NO,  KC_NO,  KC_NO,  K86,    K96,    K106,   K116,   K126,   K136 }, \
+  { K07,    K17,    K27,    K37,    K47,    KC_NO,  KC_NO,  KC_NO,  K87,    K97,    K107,   K117,   K127,   K137 }  \
+}
+
+#define NUMLOCK_LED_PIN D0
+#define CAPSLOCK_LED_PIN D1
+#define SCROLLLOCK_LED_PIN D6