Lets split eh (#3120)

* Line ending stuff again

* Added Let's Split Eh? Files and updated #USE_IC2 checks to also include th EH revision (can only be used in I2C)

* Added personal keymap, updated some of the EH files

* Created new keyboard file for testing "lets_split_eh" will merge into lets_split once fully functional

* Added split code from lets_split, removed pro micro imports and LED code

THIS IS WORKING CODE, WITHOUT RGB AND BACKLIGHT

* Took back original Lets Slit files for the lets_split keyboard, working in the lets_split_eh folder for now

* Updated eh.c

* More rework of the I2C code, added global flags for split boards.

* Introduced RGB over I2C, having weird edge case issues at the moment though

* Fixed weird I2C edgecase with RGB, although still would like to track down route cause..

* Changed RGB keycodes (static ones) to activate on key-up instead of key-down to elimate weird ghosting issue over I2C

* Lots of changes, mainly externalized the Split keyboard code and added logic for only including when needed.

- Added makefile option "SPLIT_KEYBOARD" that when = yes will include the split keyboard files and custom matrix
- Split keyboard files placed into quantum/split_common/
- Added define option for config files "SPLIT_HAND_PIN" FOr using high/low pin to determine handedness, low = right hand, high = left hand
- Cleaned up split logic for RGB and Backlight so it is only exectuted / included when needed

* Updated documentation for the new makefile options and #defines specific to split keyboards

* Added a bit more info to docs, so people aren't confused

* Modifed Let's Split to use externalized code, also added left and right hand eeprom files to the split_common folder

* Removed some debugging from eh.c

* Small changes to keyboard configs. Also added a default keymap (just a copy of my that_canadian keymap).

* Added a README file to the Let's Split Eh?

* Changed it so RGB static updates are done on key-up ONLY for split boards rather than all boards. Also fixed leftover un-used variable in rgblight.c

* Updated default keymap and my keymap for Let's Split Eh? Updated the comments so it reflects RGB control, and removed audio functions.

* Fixed lets_split_eh not having a default version

* Removed "eh" references from lets_split folder for now

* Took lets_split folder from master to fix travis build errors, weird my local was overriding.

* Changed LAYOUT_ortho_4x12_kc -> LAYOUT_kc_ortho_4x12 to match bakingpy and others

* Removed rules.mk from my lets_split keymap, not needed

* Updated the config_options doc to better explain the usage of "#define SPLIT_HAND_PIN"

6 files changed, 398 insertions, 0 deletions

diff --git a/keyboards/lets_split_eh/keymaps/default/config.h b/keyboards/lets_split_eh/keymaps/default/config.h
new file mode 100644
index 0000000000..a1df337bd9
--- /dev/null
+++ b/keyboards/lets_split_eh/keymaps/default/config.h
@@ -0,0 +1,26 @@
+/*
+This is the c configuration file for the keymap
+
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+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/>.
+*/
+
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+#endif
\ No newline at end of file
diff --git a/keyboards/lets_split_eh/keymaps/default/keymap.c b/keyboards/lets_split_eh/keymaps/default/keymap.c
new file mode 100644
index 0000000000..8ef9735749
--- /dev/null
+++ b/keyboards/lets_split_eh/keymaps/default/keymap.c
@@ -0,0 +1,170 @@
+#include QMK_KEYBOARD_H
+#include "action_layer.h"
+#include "eeconfig.h"
+
+extern keymap_config_t keymap_config;
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+#define _QWERTY 0
+
+#define _LOWER 3
+#define _RAISE 4
+#define _FUNCTION 15
+#define _ADJUST 16
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  LOWER,
+  RAISE,
+  ADJUST
+};
+
+// Fillers to make layering more clear
+#define _______ KC_TRNS
+#define XXXXXXX KC_NO
+
+// Defines for task manager and such
+#define CALTDEL LCTL(LALT(KC_DEL))
+#define TSKMGR LCTL(LSFT(KC_ESC))
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Qwerty
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Func |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   ;  | Enter|
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   /  |  '   |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Ctrl |  `   | GUI  | Alt  |Lower |    Space    |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_QWERTY] = LAYOUT( \
+  KC_TAB,        KC_Q,   KC_W,    KC_E,    KC_R,  KC_T,   KC_Y,   KC_U,  KC_I,    KC_O,    KC_P,    KC_BSPC, \
+  MO(_FUNCTION), KC_A,   KC_S,    KC_D,    KC_F,  KC_G,   KC_H,   KC_J,  KC_K,    KC_L,    KC_SCLN, 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_QUOT, \
+  KC_LCTL,       KC_GRV, KC_LGUI, KC_LALT, LOWER, KC_SPC, KC_SPC, RAISE, KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT  \
+),
+
+/* Lower
+ * ,-----------------------------------------------------------------------------------.
+ * | Esc  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  | Del  |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   _  |   +  |   {  |   }  |Enter |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |      |      | Mute |      |  |   |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |Lower | Bksp | Bksp |Raise | Next | Vol- | Vol+ | Play |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_LOWER] = LAYOUT( \
+  KC_ESC,  KC_EXLM,  KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_DEL,  \
+  _______, KC_F1,    KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, _______, \
+  _______, KC_F7,    KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  _______, _______, KC_MUTE, _______, KC_PIPE, \
+  _______, _______,  _______, _______, _______, KC_BSPC, KC_BSPC, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY  \
+),
+
+/* Raise
+ * ,-----------------------------------------------------------------------------------.
+ * | Esc  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Del  |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |   4  |   5  |   6  |   +  |  F5  |  F6  |   -  |   =  |   [  |   ]  |Enter |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |Enter |   7  |   8  |   9  |   -  |  F11 |  F12 |ISO # |ISO / | Mute |      |   \  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |   ,  |   0  |  .   |Lower | Bksp | Bksp |Raise | Next | Vol- | Vol+ | Play |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_RAISE] = LAYOUT( \
+  KC_ESC,  KC_1,    KC_2,  KC_3,   KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL,  \
+  _______, KC_4,    KC_5,  KC_6,   KC_PLUS, KC_F5,   KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, _______, \
+  KC_ENT,  KC_7,    KC_8,  KC_9,   KC_MINS, KC_F11,  KC_F12,  KC_NUHS, KC_NUBS, KC_MUTE, _______, KC_BSLS, \
+  _______, KC_COMM, KC_0,  KC_DOT, _______, KC_BSPC, KC_BSPC, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY  \
+),
+
+/* Adjust (Lower + Raise)
+ * ,-----------------------------------------------------------------------------------.
+ * |Taskmg|      |      |      |      |      |      |      |RGBVAI|RGBSAI|RGBHUI|caltde|
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |Qwerty|RGBVAD|RGBSAD|RGBHUD|RGBTOG|
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |BLSTEP|
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      | RESET|
+ * `-----------------------------------------------------------------------------------'
+ */
+[_ADJUST] = LAYOUT( \
+  TSKMGR,  _______, _______, _______, _______, _______, _______, _______, RGB_VAI, RGB_SAI, RGB_HUI, CALTDEL, \
+  _______, _______, _______, _______, _______, _______, _______, QWERTY,  RGB_VAD, RGB_SAD, RGB_HUD, RGB_TOG, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, BL_STEP, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RESET    \
+),
+
+/* Function
+ * ,-----------------------------------------------------------------------------------.
+ * |      |      |      |      |      |      |      |      |  Up  |      |      |      |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      | Left | Down |Right |      |      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Caps |      |      |      |      |      |      |      |      |      |      |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_FUNCTION] = LAYOUT( \
+  _______, _______, _______, _______, _______, _______, _______, _______, KC_UP,   _______, _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, KC_LEFT, KC_DOWN, KC_RGHT, _______, _______, \
+  KC_CAPS, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______  \
+)
+
+};
+
+void persistent_default_layer_set(uint16_t default_layer) {
+  eeconfig_update_default_layer(default_layer);
+  default_layer_set(default_layer);
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  switch (keycode) {
+    case QWERTY:
+      if (record->event.pressed) {
+        persistent_default_layer_set(1UL<<_QWERTY);
+      }
+      return false;
+      break;
+    case LOWER:
+      if (record->event.pressed) {
+        layer_on(_LOWER);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      } else {
+        layer_off(_LOWER);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      }
+      return false;
+      break;
+    case RAISE:
+      if (record->event.pressed) {
+        layer_on(_RAISE);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      } else {
+        layer_off(_RAISE);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      }
+      return false;
+      break;
+    case ADJUST:
+      if (record->event.pressed) {
+        layer_on(_ADJUST);
+      } else {
+        layer_off(_ADJUST);
+      }
+      return false;
+      break;
+  }
+  return true;
+}
\ No newline at end of file
diff --git a/keyboards/lets_split_eh/keymaps/default/rules.mk b/keyboards/lets_split_eh/keymaps/default/rules.mk
new file mode 100644
index 0000000000..457a3d01d4
--- /dev/null
+++ b/keyboards/lets_split_eh/keymaps/default/rules.mk
@@ -0,0 +1,3 @@
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif
diff --git a/keyboards/lets_split_eh/keymaps/that_canadian/config.h b/keyboards/lets_split_eh/keymaps/that_canadian/config.h
new file mode 100644
index 0000000000..a1df337bd9
--- /dev/null
+++ b/keyboards/lets_split_eh/keymaps/that_canadian/config.h
@@ -0,0 +1,26 @@
+/*
+This is the c configuration file for the keymap
+
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+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/>.
+*/
+
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+#endif
\ No newline at end of file
diff --git a/keyboards/lets_split_eh/keymaps/that_canadian/keymap.c b/keyboards/lets_split_eh/keymaps/that_canadian/keymap.c
new file mode 100644
index 0000000000..8ef9735749
--- /dev/null
+++ b/keyboards/lets_split_eh/keymaps/that_canadian/keymap.c
@@ -0,0 +1,170 @@
+#include QMK_KEYBOARD_H
+#include "action_layer.h"
+#include "eeconfig.h"
+
+extern keymap_config_t keymap_config;
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+#define _QWERTY 0
+
+#define _LOWER 3
+#define _RAISE 4
+#define _FUNCTION 15
+#define _ADJUST 16
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  LOWER,
+  RAISE,
+  ADJUST
+};
+
+// Fillers to make layering more clear
+#define _______ KC_TRNS
+#define XXXXXXX KC_NO
+
+// Defines for task manager and such
+#define CALTDEL LCTL(LALT(KC_DEL))
+#define TSKMGR LCTL(LSFT(KC_ESC))
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Qwerty
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Func |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   ;  | Enter|
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   /  |  '   |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Ctrl |  `   | GUI  | Alt  |Lower |    Space    |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_QWERTY] = LAYOUT( \
+  KC_TAB,        KC_Q,   KC_W,    KC_E,    KC_R,  KC_T,   KC_Y,   KC_U,  KC_I,    KC_O,    KC_P,    KC_BSPC, \
+  MO(_FUNCTION), KC_A,   KC_S,    KC_D,    KC_F,  KC_G,   KC_H,   KC_J,  KC_K,    KC_L,    KC_SCLN, 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_QUOT, \
+  KC_LCTL,       KC_GRV, KC_LGUI, KC_LALT, LOWER, KC_SPC, KC_SPC, RAISE, KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT  \
+),
+
+/* Lower
+ * ,-----------------------------------------------------------------------------------.
+ * | Esc  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  | Del  |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   _  |   +  |   {  |   }  |Enter |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |      |      | Mute |      |  |   |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |Lower | Bksp | Bksp |Raise | Next | Vol- | Vol+ | Play |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_LOWER] = LAYOUT( \
+  KC_ESC,  KC_EXLM,  KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_DEL,  \
+  _______, KC_F1,    KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, _______, \
+  _______, KC_F7,    KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  _______, _______, KC_MUTE, _______, KC_PIPE, \
+  _______, _______,  _______, _______, _______, KC_BSPC, KC_BSPC, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY  \
+),
+
+/* Raise
+ * ,-----------------------------------------------------------------------------------.
+ * | Esc  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Del  |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |   4  |   5  |   6  |   +  |  F5  |  F6  |   -  |   =  |   [  |   ]  |Enter |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |Enter |   7  |   8  |   9  |   -  |  F11 |  F12 |ISO # |ISO / | Mute |      |   \  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |   ,  |   0  |  .   |Lower | Bksp | Bksp |Raise | Next | Vol- | Vol+ | Play |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_RAISE] = LAYOUT( \
+  KC_ESC,  KC_1,    KC_2,  KC_3,   KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL,  \
+  _______, KC_4,    KC_5,  KC_6,   KC_PLUS, KC_F5,   KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, _______, \
+  KC_ENT,  KC_7,    KC_8,  KC_9,   KC_MINS, KC_F11,  KC_F12,  KC_NUHS, KC_NUBS, KC_MUTE, _______, KC_BSLS, \
+  _______, KC_COMM, KC_0,  KC_DOT, _______, KC_BSPC, KC_BSPC, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY  \
+),
+
+/* Adjust (Lower + Raise)
+ * ,-----------------------------------------------------------------------------------.
+ * |Taskmg|      |      |      |      |      |      |      |RGBVAI|RGBSAI|RGBHUI|caltde|
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |Qwerty|RGBVAD|RGBSAD|RGBHUD|RGBTOG|
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |BLSTEP|
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      | RESET|
+ * `-----------------------------------------------------------------------------------'
+ */
+[_ADJUST] = LAYOUT( \
+  TSKMGR,  _______, _______, _______, _______, _______, _______, _______, RGB_VAI, RGB_SAI, RGB_HUI, CALTDEL, \
+  _______, _______, _______, _______, _______, _______, _______, QWERTY,  RGB_VAD, RGB_SAD, RGB_HUD, RGB_TOG, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, BL_STEP, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RESET    \
+),
+
+/* Function
+ * ,-----------------------------------------------------------------------------------.
+ * |      |      |      |      |      |      |      |      |  Up  |      |      |      |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      | Left | Down |Right |      |      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Caps |      |      |      |      |      |      |      |      |      |      |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_FUNCTION] = LAYOUT( \
+  _______, _______, _______, _______, _______, _______, _______, _______, KC_UP,   _______, _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, KC_LEFT, KC_DOWN, KC_RGHT, _______, _______, \
+  KC_CAPS, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______  \
+)
+
+};
+
+void persistent_default_layer_set(uint16_t default_layer) {
+  eeconfig_update_default_layer(default_layer);
+  default_layer_set(default_layer);
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  switch (keycode) {
+    case QWERTY:
+      if (record->event.pressed) {
+        persistent_default_layer_set(1UL<<_QWERTY);
+      }
+      return false;
+      break;
+    case LOWER:
+      if (record->event.pressed) {
+        layer_on(_LOWER);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      } else {
+        layer_off(_LOWER);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      }
+      return false;
+      break;
+    case RAISE:
+      if (record->event.pressed) {
+        layer_on(_RAISE);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      } else {
+        layer_off(_RAISE);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      }
+      return false;
+      break;
+    case ADJUST:
+      if (record->event.pressed) {
+        layer_on(_ADJUST);
+      } else {
+        layer_off(_ADJUST);
+      }
+      return false;
+      break;
+  }
+  return true;
+}
\ No newline at end of file
diff --git a/keyboards/lets_split_eh/keymaps/that_canadian/rules.mk b/keyboards/lets_split_eh/keymaps/that_canadian/rules.mk
new file mode 100644
index 0000000000..457a3d01d4
--- /dev/null
+++ b/keyboards/lets_split_eh/keymaps/that_canadian/rules.mk
@@ -0,0 +1,3 @@
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif