~ruther/qmk_firmware

0fab3bbde33f82301a8c5e177c3c0ceb7ad2219c — That-Canadian 7 years ago b287747
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"
M common.mk => common.mk +1 -0
@@ 21,4 21,5 @@ COMMON_VPATH += $(QUANTUM_PATH)/keymap_extras
COMMON_VPATH += $(QUANTUM_PATH)/audio
COMMON_VPATH += $(QUANTUM_PATH)/process_keycode
COMMON_VPATH += $(QUANTUM_PATH)/api
COMMON_VPATH += $(QUANTUM_PATH)/split_common
COMMON_VPATH += $(DRIVER_PATH)

M common_features.mk => common_features.mk +13 -1
@@ 210,5 210,17 @@ QUANTUM_SRC:= \
    $(QUANTUM_DIR)/process_keycode/process_leader.c

ifndef CUSTOM_MATRIX
    QUANTUM_SRC += $(QUANTUM_DIR)/matrix.c
    ifeq ($(strip $(SPLIT_KEYBOARD)), yes)
        QUANTUM_SRC += $(QUANTUM_DIR)/split_common/matrix.c
    else
        QUANTUM_SRC += $(QUANTUM_DIR)/matrix.c
    endif
endif

ifeq ($(strip $(SPLIT_KEYBOARD)), yes)
    OPT_DEFS += -DSPLIT_KEYBOARD
    QUANTUM_SRC += $(QUANTUM_DIR)/split_common/split_flags.c \
                $(QUANTUM_DIR)/split_common/split_util.c \
                $(QUANTUM_DIR)/split_common/i2c.c \
                $(QUANTUM_DIR)/split_common/serial.c  
endif

M docs/config_options.md => docs/config_options.md +12 -0
@@ 179,6 179,16 @@ If you define these options you will enable the associated feature, which may in
* `#define MOUSEKEY_MAX_SPEED 7`
* `#define MOUSEKEY_WHEEL_DELAY 0`

## Split Keyboard Options

Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk

* `#define SPLIT_HAND_PIN B7`
  * For using high/low pin to determine handedness, low = right hand, high = left hand. Replace 'B7' with the pin you are using. This is optional and you can still use the EEHANDS method or MASTER_LEFT / MASTER_RIGHT defines like the stock Let's Split uses.
  
* `#define USE_I2C`
  * For using I2C instead of Serial (defaults to serial)

# The `rules.mk` File

This is a [make](https://www.gnu.org/software/make/manual/make.html) file that is included by the top-level `Makefile`. It is used to set some information about the MCU that we will be compiling for as well as enabling and disabling certain features.


@@ 232,3 242,5 @@ Use these to enable or disable building certain features. The more you have enab
  * Unicode
* `BLUETOOTH_ENABLE`
  * Enable Bluetooth with the Adafruit EZ-Key HID
* `SPLIT_KEYBOARD`
  * Enables split keyboard support (dual MCU like the let's split and bakingpy's boards) and includes all necessary files located at quantum/split_common

M docs/getting_started_make_guide.md => docs/getting_started_make_guide.md +4 -0
@@ 133,6 133,10 @@ This consumes about 5390 bytes.

This enables [key lock](feature_key_lock.md). This consumes an additional 260 bytes.

`SPLIT_KEYBOARD`

This enables split keyboard support (dual MCU like the let's split and bakingpy's boards) and includes all necessary files located at quantum/split_common

## Customizing Makefile Options on a Per-Keymap Basis

If your keymap directory has a file called `rules.mk` any options you set in that file will take precedence over other `rules.mk` options for your particular keyboard.

A keyboards/lets_split/keymaps/that_canadian/config.h => keyboards/lets_split/keymaps/that_canadian/config.h +32 -0
@@ 0,0 1,32 @@
/*
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"

/* Select hand configuration */

#define MASTER_LEFT
// #define _MASTER_RIGHT
// #define EE_HANDS

#endif
\ No newline at end of file

A keyboards/lets_split/keymaps/that_canadian/keymap.c => keyboards/lets_split/keymaps/that_canadian/keymap.c +163 -0
@@ 0,0 1,163 @@
#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 _ADJUST 16

enum custom_keycodes {
  QWERTY = SAFE_RANGE,
  LOWER,
  RAISE,
  ADJUST,
  BACKLIT
};

// Fillers to make layering more clear
#define _______ KC_TRNS
#define XXXXXXX KC_NO

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {

/* Qwerty
 * ,-----------------------------------------------------------------------------------.
 * | RESET|   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | Bksp |
 * |------+------+------+------+------+-------------+------+------+------+------+------|
 * | Esc  |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   ;  |  "   |
 * |------+------+------+------+------+------|------+------+------+------+------+------|
 * | Shift|   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   /  |Enter |
 * |------+------+------+------+------+------+------+------+------+------+------+------|
 * |Backlt| Ctrl | GUI  | Alt  |Lower |Space |Space |Raise | Left | Down |  Up  |Right |
 * `-----------------------------------------------------------------------------------'
 */
[_QWERTY] = LAYOUT( \
  RESET,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC, \
  KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, \
  RGB_TOG, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT , \
  BACKLIT,  KC_LCTL, KC_LGUI, KC_LALT, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT \
),

/* Lower
 * ,-----------------------------------------------------------------------------------.
 * |   ~  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  | Bksp |
 * |------+------+------+------+------+-------------+------+------+------+------+------|
 * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   _  |   +  |     |    \  |  |   |
 * |------+------+------+------+------+------|------+------+------+------+------+------|
 * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |ISO ~ |ISO | |      |      |Enter |
 * |------+------+------+------+------+------+------+------+------+------+------+------|
 * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
 * `-----------------------------------------------------------------------------------'
 */
[_LOWER] = LAYOUT( \
  KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_BSPC, \
  KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE, \
  _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,S(KC_NUHS),S(KC_NUBS),_______, _______, _______, \
  _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
),

/* Raise
 * ,-----------------------------------------------------------------------------------.
 * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
 * |------+------+------+------+------+-------------+------+------+------+------+------|
 * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   -  |   =  |   [  |   ]  |  \   |
 * |------+------+------+------+------+------|------+------+------+------+------+------|
 * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |ISO # |ISO / |      |      |Enter |
 * |------+------+------+------+------+------+------+------+------+------+------+------|
 * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
 * `-----------------------------------------------------------------------------------'
 */
[_RAISE] = LAYOUT( \
  KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSPC, \
  KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS, \
  _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_NUHS, KC_NUBS, _______, _______, _______, \
  _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
),

/* Adjust (Lower + Raise)
 * ,-----------------------------------------------------------------------------------.
 * |      | Reset|      |      |      |      |      |      |      |      |      |  Del |
 * |------+------+------+------+------+-------------+------+------+------+------+------|
 * |      |      |      |Aud on|Audoff|AGnorm|AGswap|Qwerty|Colemk|Dvorak|      |      |
 * |------+------+------+------+------+------|------+------+------+------+------+------|
 * |      |      |      |      |      |      |      |      |      |      |      |      |
 * |------+------+------+------+------+------+------+------+------+------+------+------|
 * |      |      |      |      |      |             |      |      |      |      |      |
 * `-----------------------------------------------------------------------------------'
 */
[_ADJUST] =  LAYOUT( \
  _______, RESET,   _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_DEL, \
  _______, _______, _______, AU_ON,   AU_OFF,  AG_NORM, AG_SWAP, _______,  _______, _______,  _______, _______, \
  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______ \
)


};

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) {
        #ifdef AUDIO_ENABLE
          PLAY_SONG(tone_qwerty);
        #endif
        persistent_default_layer_set(1UL<<_QWERTY);
      }
      return false;
      break;
	case BACKLIT:
      if (record->event.pressed) {
        register_code(KC_RSFT);
        #ifdef BACKLIGHT_ENABLE
          backlight_step();
        #endif
      } else {
        unregister_code(KC_RSFT);
      }
      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

A keyboards/lets_split_eh/README.md => keyboards/lets_split_eh/README.md +13 -0
@@ 0,0 1,13 @@
# Let's Split Eh?

![Let's Split Eh?](https://i.imgur.com/VMQG4qw.jpg?1)

This is a split 40% ortho board. It is the exact same footprint and the Let's Split keyboard by wootpatoot. This board has USB-C / RGB Underglow / and is all on-board. Meant as a drop-in replacement for the V2 Let's Split.

Keyboard Maintainer: [Christopher Poole (That-Canadian)](https://github.com/That-Canadian)  

Make example for this keyboard (after setting up your build environment):

    make lets_split_eh/eh:default

See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.
\ No newline at end of file

A keyboards/lets_split_eh/config.h => keyboards/lets_split_eh/config.h +44 -0
@@ 0,0 1,44 @@
/*
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/>.
*/

#ifndef CONFIG_H
#define CONFIG_H

#include "config_common.h"

/* USB Device descriptor parameter */
#define VENDOR_ID       0xFEED
#define PRODUCT_ID      0xE401
#define DEVICE_VER      0x0E41
#define MANUFACTURER    That-Canadian
#define PRODUCT         Lets Split Eh?
#define DESCRIPTION     An on-board component Lets Split w/ USB-C

/* key matrix size */
// Rows are doubled-up
#define MATRIX_ROWS 8
#define MATRIX_COLS 6

/* Set 0 if debouncing isn't needed */
#define DEBOUNCING_DELAY 5

/* key combination for command */
#define IS_COMMAND() ( \
    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
)

#endif

A keyboards/lets_split_eh/eh/config.h => keyboards/lets_split_eh/eh/config.h +47 -0
@@ 0,0 1,47 @@
/*
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 EH_CONFIG_H
#define EH_CONFIG_H

// To let configuration know this is of type EH, which will force I2C irregardless of user config
#define EH

#include "config_common.h"

/* Let's Split EH? pin-out */
#define MATRIX_ROW_PINS { B1, B3, D7, B4 }
#define MATRIX_COL_PINS { F4, F5, C6, B6, B5, D5 }
#define UNUSED_PINS

#define DIODE_DIRECTION COL2ROW

#define BACKLIGHT_PIN B7

/* number of backlight levels */
#define BACKLIGHT_LEVELS 3

/* ws2812 RGB LED */
#define RGB_DI_PIN B2
#define RGBLED_NUM 6    // Number of LEDs (each hand)

/* Split Defines */
#define SPLIT_HAND_PIN D3

#endif


A keyboards/lets_split_eh/eh/eh.c => keyboards/lets_split_eh/eh/eh.c +14 -0
@@ 0,0 1,14 @@
#include "lets_split_eh.h"

void matrix_init_kb(void) {

    // JTAG disable for PORT F. write JTD bit twice within four cycles.
    MCUCR |= (1<<JTD);
    MCUCR |= (1<<JTD);
	
	// Undo init of RX LED, we use that port currently
	// DDRB &= ~(1<<0);
	
	matrix_init_user();
};


A keyboards/lets_split_eh/eh/eh.h => keyboards/lets_split_eh/eh/eh.h +27 -0
@@ 0,0 1,27 @@
#ifndef EH_H
#define EH_H

#include "lets_split_eh.h"

#include "quantum.h"

#define LAYOUT( \
	L00, L01, L02, L03, L04, L05, R00, R01, R02, R03, R04, R05, \
	L10, L11, L12, L13, L14, L15, R10, R11, R12, R13, R14, R15, \
	L20, L21, L22, L23, L24, L25, R20, R21, R22, R23, R24, R25, \
	L30, L31, L32, L33, L34, L35, R30, R31, R32, R33, R34, R35 \
	) \
	{ \
		{ L00, L01, L02, L03, L04, L05 }, \
		{ L10, L11, L12, L13, L14, L15 }, \
		{ L20, L21, L22, L23, L24, L25 }, \
		{ L30, L31, L32, L33, L34, L35 }, \
        { R00, R01, R02, R03, R04, R05 }, \
        { R10, R11, R12, R13, R14, R15 }, \
        { R20, R21, R22, R23, R24, R25 }, \
        { R30, R31, R32, R33, R34, R35 } \
	}
    
#define LAYOUT_ortho_4x12 LAYOUT

#endif

A keyboards/lets_split_eh/eh/rules.mk => keyboards/lets_split_eh/eh/rules.mk +4 -0
@@ 0,0 1,4 @@
BOOTLOADER = atmel-dfu

BACKLIGHT_ENABLE = yes
RGBLIGHT_ENABLE = yes
\ No newline at end of file

A keyboards/lets_split_eh/keymaps/default/config.h => keyboards/lets_split_eh/keymaps/default/config.h +26 -0
@@ 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

A keyboards/lets_split_eh/keymaps/default/keymap.c => keyboards/lets_split_eh/keymaps/default/keymap.c +170 -0
@@ 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

A keyboards/lets_split_eh/keymaps/default/rules.mk => keyboards/lets_split_eh/keymaps/default/rules.mk +3 -0
@@ 0,0 1,3 @@
ifndef QUANTUM_DIR
	include ../../../../Makefile
endif

A keyboards/lets_split_eh/keymaps/that_canadian/config.h => keyboards/lets_split_eh/keymaps/that_canadian/config.h +26 -0
@@ 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

A keyboards/lets_split_eh/keymaps/that_canadian/keymap.c => keyboards/lets_split_eh/keymaps/that_canadian/keymap.c +170 -0
@@ 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

A keyboards/lets_split_eh/keymaps/that_canadian/rules.mk => keyboards/lets_split_eh/keymaps/that_canadian/rules.mk +3 -0
@@ 0,0 1,3 @@
ifndef QUANTUM_DIR
	include ../../../../Makefile
endif

A keyboards/lets_split_eh/lets_split_eh.c => keyboards/lets_split_eh/lets_split_eh.c +1 -0
@@ 0,0 1,1 @@
#include "lets_split_eh.h"

A keyboards/lets_split_eh/lets_split_eh.h => keyboards/lets_split_eh/lets_split_eh.h +27 -0
@@ 0,0 1,27 @@
#ifndef LETS_SPLIT_EH_H
#define LETS_SPLIT_EH_H

#include "quantum.h"

#ifdef KEYBOARD_lets_split_eh_eh
    #include "eh.h"
#endif


// Used to create a keymap using only KC_ prefixed keys
#define LAYOUT_kc( \
    L00, L01, L02, L03, L04, L05, R00, R01, R02, R03, R04, R05, \
    L10, L11, L12, L13, L14, L15, R10, R11, R12, R13, R14, R15, \
    L20, L21, L22, L23, L24, L25, R20, R21, R22, R23, R24, R25, \
    L30, L31, L32, L33, L34, L35, R30, R31, R32, R33, R34, R35 \
    ) \
    LAYOUT( \
        KC_##L00, KC_##L01, KC_##L02, KC_##L03, KC_##L04, KC_##L05, KC_##R00, KC_##R01, KC_##R02, KC_##R03, KC_##R04, KC_##R05, \
        KC_##L10, KC_##L11, KC_##L12, KC_##L13, KC_##L14, KC_##L15, KC_##R10, KC_##R11, KC_##R12, KC_##R13, KC_##R14, KC_##R15, \
        KC_##L20, KC_##L21, KC_##L22, KC_##L23, KC_##L24, KC_##L25, KC_##R20, KC_##R21, KC_##R22, KC_##R23, KC_##R24, KC_##R25, \
        KC_##L30, KC_##L31, KC_##L32, KC_##L33, KC_##L34, KC_##L35, KC_##R30, KC_##R31, KC_##R32, KC_##R33, KC_##R34, KC_##R35 \
    )

#define LAYOUT_kc_ortho_4x12 LAYOUT_kc

#endif

A keyboards/lets_split_eh/rules.mk => keyboards/lets_split_eh/rules.mk +70 -0
@@ 0,0 1,70 @@
# MCU name
#MCU = at90usb1287
MCU = atmega32u4

# Processor frequency.
#     This will define a symbol, F_CPU, in all source code files equal to the
#     processor frequency in Hz. You can then use this symbol in your source code to
#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
#     automatically to create a 32-bit value in your source code.
#
#     This will be an integer division of F_USB below, as it is sourced by
#     F_USB after it has run through any CPU prescalers. Note that this value
#     does not *change* the processor frequency - it should merely be updated to
#     reflect the processor speed set externally so that the code can use accurate
#     software delays.
F_CPU = 16000000

#
# LUFA specific
#
# Target architecture (see library "Board Types" documentation).
ARCH = AVR8

# Input clock frequency.
#     This will define a symbol, F_USB, in all source code files equal to the
#     input clock frequency (before any prescaling is performed) in Hz. This value may
#     differ from F_CPU if prescaling is used on the latter, and is required as the
#     raw input clock is fed directly to the PLL sections of the AVR for high speed
#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
#     at the end, this will be done automatically to create a 32-bit value in your
#     source code.
#
#     If no clock division is performed on the input clock inside the AVR (via the
#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
F_USB = $(F_CPU)

# Bootloader
#     This definition is optional, and if your keyboard supports multiple bootloaders of
#     different sizes, comment this out, and the correct address will be loaded
#     automatically (+60). See bootloader.mk for all options.
BOOTLOADER = atmel-dfu


# Interrupt driven control endpoint task(+60)
OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT

# Build Options
#   change to "no" to disable the options, or define them in the Makefile in
#   the appropriate keymap folder that will get included automatically
#
BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
MOUSEKEY_ENABLE = no       # Mouse keys(+4700)
EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
CONSOLE_ENABLE = no         # Console for debug(+400)
COMMAND_ENABLE = no        # Commands for debug and configuration
NKRO_ENABLE = yes            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
BACKLIGHT_ENABLE = no      # Enable keyboard backlight functionality
MIDI_ENABLE = no            # MIDI controls
AUDIO_ENABLE = no           # Audio output on port C6
UNICODE_ENABLE = no         # Unicode
BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.
API_SYSEX_ENABLE = no

SPLIT_KEYBOARD = yes

# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend

DEFAULT_FOLDER = lets_split_eh/eh

M quantum/keymap_common.c => quantum/keymap_common.c +22 -0
@@ 29,6 29,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
#include "backlight.h"
#include "quantum.h"

#ifdef SPLIT_KEYBOARD
    #include "split_flags.h"
#endif

#ifdef MIDI_ENABLE
	#include "process_midi.h"
#endif


@@ 134,21 138,39 @@ action_t action_for_key(uint8_t layer, keypos_t key)
    #ifdef BACKLIGHT_ENABLE
        case BL_ON:
            action.code = ACTION_BACKLIGHT_ON();
            #ifdef SPLIT_KEYBOARD
                BACKLIT_DIRTY = true;
            #endif
            break;
        case BL_OFF:
            action.code = ACTION_BACKLIGHT_OFF();
            #ifdef SPLIT_KEYBOARD
                BACKLIT_DIRTY = true;
            #endif
            break;
        case BL_DEC:
            action.code = ACTION_BACKLIGHT_DECREASE();
            #ifdef SPLIT_KEYBOARD
                BACKLIT_DIRTY = true;
            #endif
            break;
        case BL_INC:
            action.code = ACTION_BACKLIGHT_INCREASE();
            #ifdef SPLIT_KEYBOARD
                BACKLIT_DIRTY = true;
            #endif
            break;
        case BL_TOGG:
            action.code = ACTION_BACKLIGHT_TOGGLE();
            #ifdef SPLIT_KEYBOARD
                BACKLIT_DIRTY = true;
            #endif
            break;
        case BL_STEP:
            action.code = ACTION_BACKLIGHT_STEP();
            #ifdef SPLIT_KEYBOARD
                BACKLIT_DIRTY = true;
            #endif
            break;
    #endif
    #ifdef SWAP_HANDS_ENABLE

M quantum/quantum.c => quantum/quantum.c +65 -0
@@ 312,8 312,16 @@ bool process_record_quantum(keyrecord_t *record) {
  #endif
  #if defined(RGBLIGHT_ENABLE) || defined(RGB_MATRIX_ENABLE)
  case RGB_TOG:
    // Split keyboards need to trigger on key-up for edge-case issue
    #ifndef SPLIT_KEYBOARD
    if (record->event.pressed) {
    #else
    if (!record->event.pressed) {
    #endif
      rgblight_toggle();
      #ifdef SPLIT_KEYBOARD
          RGB_DIRTY = true;
      #endif
    }
    return false;
  case RGB_MODE_FORWARD:


@@ 325,6 333,9 @@ bool process_record_quantum(keyrecord_t *record) {
      else {
        rgblight_step();
      }
      #ifdef SPLIT_KEYBOARD
          RGB_DIRTY = true;
      #endif
    }
    return false;
  case RGB_MODE_REVERSE:


@@ 336,36 347,87 @@ bool process_record_quantum(keyrecord_t *record) {
      else {
        rgblight_step_reverse();
      }
      #ifdef SPLIT_KEYBOARD
          RGB_DIRTY = true;
      #endif
    }
    return false;
  case RGB_HUI:
    // Split keyboards need to trigger on key-up for edge-case issue
    #ifndef SPLIT_KEYBOARD
    if (record->event.pressed) {
    #else
    if (!record->event.pressed) {
    #endif
      rgblight_increase_hue();
      #ifdef SPLIT_KEYBOARD
          RGB_DIRTY = true;
      #endif
    }
    return false;
  case RGB_HUD:
    // Split keyboards need to trigger on key-up for edge-case issue
    #ifndef SPLIT_KEYBOARD
    if (record->event.pressed) {
    #else
    if (!record->event.pressed) {
    #endif
      rgblight_decrease_hue();
      #ifdef SPLIT_KEYBOARD
          RGB_DIRTY = true;
      #endif
    }
    return false;
  case RGB_SAI:
    // Split keyboards need to trigger on key-up for edge-case issue
    #ifndef SPLIT_KEYBOARD
    if (record->event.pressed) {
    #else
    if (!record->event.pressed) {
    #endif
      rgblight_increase_sat();
      #ifdef SPLIT_KEYBOARD
          RGB_DIRTY = true;
      #endif
    }
    return false;
  case RGB_SAD:
    // Split keyboards need to trigger on key-up for edge-case issue
    #ifndef SPLIT_KEYBOARD
    if (record->event.pressed) {
    #else
    if (!record->event.pressed) {
    #endif
      rgblight_decrease_sat();
      #ifdef SPLIT_KEYBOARD
          RGB_DIRTY = true;
      #endif
    }
    return false;
  case RGB_VAI:
    // Split keyboards need to trigger on key-up for edge-case issue
    #ifndef SPLIT_KEYBOARD
    if (record->event.pressed) {
    #else
    if (!record->event.pressed) {
    #endif
      rgblight_increase_val();
      #ifdef SPLIT_KEYBOARD
          RGB_DIRTY = true;
      #endif
    }
    return false;
  case RGB_VAD:
    // Split keyboards need to trigger on key-up for edge-case issue
    #ifndef SPLIT_KEYBOARD
    if (record->event.pressed) {
    #else
    if (!record->event.pressed) {
    #endif
      rgblight_decrease_val();
      #ifdef SPLIT_KEYBOARD
          RGB_DIRTY = true;
      #endif
    }
    return false;
  case RGB_SPI:


@@ 381,6 443,9 @@ bool process_record_quantum(keyrecord_t *record) {
  case RGB_MODE_PLAIN:
    if (record->event.pressed) {
      rgblight_mode(1);
      #ifdef SPLIT_KEYBOARD
          RGB_DIRTY = true;
      #endif
    }
    return false;
  case RGB_MODE_BREATHE:

M quantum/quantum.h => quantum/quantum.h +6 -0
@@ 33,9 33,15 @@
#ifdef RGBLIGHT_ENABLE
  #include "rgblight.h"
#endif

#ifdef SPLIT_KEYBOARD
    #include "split_flags.h"
#endif

#ifdef RGB_MATRIX_ENABLE
	#include "rgb_matrix.h"
#endif

#include "action_layer.h"
#include "eeconfig.h"
#include <stddef.h>

M quantum/rgblight.c => quantum/rgblight.c +1 -1
@@ 127,7 127,7 @@ void eeconfig_update_rgblight(uint32_t val) {
  #endif
}
void eeconfig_update_rgblight_default(void) {
  dprintf("eeconfig_update_rgblight_default\n");
  //dprintf("eeconfig_update_rgblight_default\n");
  rgblight_config.enable = 1;
  rgblight_config.mode = 1;
  rgblight_config.hue = 0;

M quantum/rgblight.h => quantum/rgblight.h +4 -0
@@ 76,6 76,10 @@
#include "rgblight_types.h"
#include "rgblight_list.h"

#if defined(__AVR__)
    #include <avr/pgmspace.h>
#endif

extern LED_TYPE led[RGBLED_NUM];

extern const uint8_t RGBLED_BREATHING_INTERVALS[4] PROGMEM;

A quantum/split_common/eeprom-lefthand.eep => quantum/split_common/eeprom-lefthand.eep +2 -0
@@ 0,0 1,2 @@
:0F000000000000000000000000000000000001F0
:00000001FF

A quantum/split_common/eeprom-righthand.eep => quantum/split_common/eeprom-righthand.eep +2 -0
@@ 0,0 1,2 @@
:0F000000000000000000000000000000000000F1
:00000001FF

A quantum/split_common/i2c.c => quantum/split_common/i2c.c +187 -0
@@ 0,0 1,187 @@
#include <util/twi.h>
#include <avr/io.h>
#include <stdlib.h>
#include <avr/interrupt.h>
#include <util/twi.h>
#include <stdbool.h>
#include "i2c.h"
#include "split_flags.h"

#if defined(USE_I2C) || defined(EH)

// Limits the amount of we wait for any one i2c transaction.
// Since were running SCL line 100kHz (=> 10μs/bit), and each transactions is
// 9 bits, a single transaction will take around 90μs to complete.
//
// (F_CPU/SCL_CLOCK)  =>  # of μC cycles to transfer a bit
// poll loop takes at least 8 clock cycles to execute
#define I2C_LOOP_TIMEOUT (9+1)*(F_CPU/SCL_CLOCK)/8

#define BUFFER_POS_INC() (slave_buffer_pos = (slave_buffer_pos+1)%SLAVE_BUFFER_SIZE)

volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];

static volatile uint8_t slave_buffer_pos;
static volatile bool slave_has_register_set = false;

// Wait for an i2c operation to finish
inline static
void i2c_delay(void) {
  uint16_t lim = 0;
  while(!(TWCR & (1<<TWINT)) && lim < I2C_LOOP_TIMEOUT)
    lim++;

  // easier way, but will wait slightly longer
  // _delay_us(100);
}

// Setup twi to run at 100kHz
void i2c_master_init(void) {
  // no prescaler
  TWSR = 0;
  // Set TWI clock frequency to SCL_CLOCK. Need TWBR>10.
  // Check datasheets for more info.
  TWBR = ((F_CPU/SCL_CLOCK)-16)/2;
}

// Start a transaction with the given i2c slave address. The direction of the
// transfer is set with I2C_READ and I2C_WRITE.
// returns: 0 => success
//          1 => error
uint8_t i2c_master_start(uint8_t address) {
  TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTA);

  i2c_delay();

  // check that we started successfully
  if ( (TW_STATUS != TW_START) && (TW_STATUS != TW_REP_START))
    return 1;

  TWDR = address;
  TWCR = (1<<TWINT) | (1<<TWEN);

  i2c_delay();

  if ( (TW_STATUS != TW_MT_SLA_ACK) && (TW_STATUS != TW_MR_SLA_ACK) )
    return 1; // slave did not acknowledge
  else
    return 0; // success
}


// Finish the i2c transaction.
void i2c_master_stop(void) {
  TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);

  uint16_t lim = 0;
  while(!(TWCR & (1<<TWSTO)) && lim < I2C_LOOP_TIMEOUT)
    lim++;
}

// Write one byte to the i2c slave.
// returns 0 => slave ACK
//         1 => slave NACK
uint8_t i2c_master_write(uint8_t data) {
  TWDR = data;
  TWCR = (1<<TWINT) | (1<<TWEN);

  i2c_delay();

  // check if the slave acknowledged us
  return (TW_STATUS == TW_MT_DATA_ACK) ? 0 : 1;
}

uint8_t i2c_master_write_data(void *const TXdata, uint8_t dataLen) {
    
    uint8_t *data = (uint8_t *)TXdata;
    int err = 0;
    
    for (int i = 0; i < dataLen; i++) {
        err = i2c_master_write(data[i]);
        
        if ( err )
            return err;
    }
    
    return err;
    
}

// Read one byte from the i2c slave. If ack=1 the slave is acknowledged,
// if ack=0 the acknowledge bit is not set.
// returns: byte read from i2c device
uint8_t i2c_master_read(int ack) {
  TWCR = (1<<TWINT) | (1<<TWEN) | (ack<<TWEA);

  i2c_delay();
  return TWDR;
}

void i2c_reset_state(void) {
  TWCR = 0;
}

void i2c_slave_init(uint8_t address) {
  TWAR = address << 0; // slave i2c address
  // TWEN  - twi enable
  // TWEA  - enable address acknowledgement
  // TWINT - twi interrupt flag
  // TWIE  - enable the twi interrupt
  TWCR = (1<<TWIE) | (1<<TWEA) | (1<<TWINT) | (1<<TWEN);
}

ISR(TWI_vect);

ISR(TWI_vect) {
  uint8_t ack = 1;
  switch(TW_STATUS) {
    case TW_SR_SLA_ACK:
      // this device has been addressed as a slave receiver
      slave_has_register_set = false;
      break;

    case TW_SR_DATA_ACK:
      // this device has received data as a slave receiver
      // The first byte that we receive in this transaction sets the location
      // of the read/write location of the slaves memory that it exposes over
      // i2c.  After that, bytes will be written at slave_buffer_pos, incrementing
      // slave_buffer_pos after each write.
      if(!slave_has_register_set) {
        slave_buffer_pos = TWDR;
        // don't acknowledge the master if this memory loctaion is out of bounds
        if ( slave_buffer_pos >= SLAVE_BUFFER_SIZE ) {
          ack = 0;
          slave_buffer_pos = 0;
        }  
        
        slave_has_register_set = true;
      } else {      
        i2c_slave_buffer[slave_buffer_pos] = TWDR;
        
        if ( slave_buffer_pos == I2C_BACKLIT_START) {
            BACKLIT_DIRTY = true;
        } else if ( slave_buffer_pos == (I2C_RGB_START+3)) {
            RGB_DIRTY = true;
        }
        
        BUFFER_POS_INC();
      }
      break;

    case TW_ST_SLA_ACK:
    case TW_ST_DATA_ACK:
      // master has addressed this device as a slave transmitter and is
      // requesting data.
      TWDR = i2c_slave_buffer[slave_buffer_pos];
      BUFFER_POS_INC();
      break;

    case TW_BUS_ERROR: // something went wrong, reset twi state
      TWCR = 0;
    default:
      break;
  }
  // Reset everything, so we are ready for the next TWI interrupt
  TWCR |= (1<<TWIE) | (1<<TWINT) | (ack<<TWEA) | (1<<TWEN);
}
#endif

A quantum/split_common/i2c.h => quantum/split_common/i2c.h +60 -0
@@ 0,0 1,60 @@
#ifndef I2C_H
#define I2C_H

#include <stdint.h>

#ifndef F_CPU
#define F_CPU 16000000UL
#endif

#define I2C_READ 1
#define I2C_WRITE 0

#define I2C_ACK 1
#define I2C_NACK 0

// Address location defines (Keymap should be last, as it's size is dynamic)
#define I2C_BACKLIT_START   0x00
// Need 4 bytes for RGB (32 bit)
#define I2C_RGB_START       0x01
#define I2C_KEYMAP_START    0x06

// Slave buffer (8bit per)
// Rows per hand + backlit space + rgb space
// TODO : Make this dynamically sized
#define SLAVE_BUFFER_SIZE 0x20

// i2c SCL clock frequency
#define SCL_CLOCK  400000L

// Support 8bits right now (8 cols) will need to edit to take higher (code exists in delta split?)
extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];

void i2c_master_init(void);
uint8_t i2c_master_start(uint8_t address);
void i2c_master_stop(void);
uint8_t i2c_master_write(uint8_t data);
uint8_t i2c_master_write_data(void *const TXdata, uint8_t dataLen);
uint8_t i2c_master_read(int);
void i2c_reset_state(void);
void i2c_slave_init(uint8_t address);


static inline unsigned char i2c_start_read(unsigned char addr) {
  return i2c_master_start((addr << 1) | I2C_READ);
}

static inline unsigned char i2c_start_write(unsigned char addr) {
  return i2c_master_start((addr << 1) | I2C_WRITE);
}

// from SSD1306 scrips
extern unsigned char i2c_rep_start(unsigned char addr);
extern void i2c_start_wait(unsigned char addr);
extern unsigned char i2c_readAck(void);
extern unsigned char i2c_readNak(void);
extern unsigned char i2c_read(unsigned char ack);

#define i2c_read(ack)  (ack) ? i2c_readAck() : i2c_readNak();

#endif

A quantum/split_common/matrix.c => quantum/split_common/matrix.c +510 -0
@@ 0,0 1,510 @@
/*
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/>.
*/

/*
 * scan matrix
 */
#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include "wait.h"
#include "print.h"
#include "debug.h"
#include "util.h"
#include "matrix.h"
#include "split_util.h"
#include "pro_micro.h"
#include "config.h"
#include "timer.h"
#include "split_flags.h"

#ifdef RGBLIGHT_ENABLE
#   include "rgblight.h"
#endif
#ifdef BACKLIGHT_ENABLE
#   include "backlight.h"
#endif

#if defined(USE_I2C) || defined(EH)
#  include "i2c.h"
#else // USE_SERIAL
#  include "serial.h"
#endif

#ifndef DEBOUNCING_DELAY
#   define DEBOUNCING_DELAY 5
#endif

#if (DEBOUNCING_DELAY > 0)
    static uint16_t debouncing_time;
    static bool debouncing = false;
#endif

#if (MATRIX_COLS <= 8)
#    define print_matrix_header()  print("\nr/c 01234567\n")
#    define print_matrix_row(row)  print_bin_reverse8(matrix_get_row(row))
#    define matrix_bitpop(i)       bitpop(matrix[i])
#    define ROW_SHIFTER ((uint8_t)1)
#else
#    error "Currently only supports 8 COLS"
#endif
static matrix_row_t matrix_debouncing[MATRIX_ROWS];

#define ERROR_DISCONNECT_COUNT 5

#define ROWS_PER_HAND (MATRIX_ROWS/2)

static uint8_t error_count = 0;

static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;

/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t matrix_debouncing[MATRIX_ROWS];

#if (DIODE_DIRECTION == COL2ROW)
    static void init_cols(void);
    static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
    static void unselect_rows(void);
    static void select_row(uint8_t row);
    static void unselect_row(uint8_t row);
#elif (DIODE_DIRECTION == ROW2COL)
    static void init_rows(void);
    static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
    static void unselect_cols(void);
    static void unselect_col(uint8_t col);
    static void select_col(uint8_t col);
#endif

__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) {
}

inline
uint8_t matrix_rows(void)
{
    return MATRIX_ROWS;
}

inline
uint8_t matrix_cols(void)
{
    return MATRIX_COLS;
}

void matrix_init(void)
{
#ifdef DISABLE_JTAG
  // JTAG disable for PORT F. write JTD bit twice within four cycles.
  MCUCR |= (1<<JTD);
  MCUCR |= (1<<JTD);
#endif

    debug_enable = true;
    debug_matrix = true;
    debug_mouse = true;
    // initialize row and col
#if (DIODE_DIRECTION == COL2ROW)
    unselect_rows();
    init_cols();
#elif (DIODE_DIRECTION == ROW2COL)
    unselect_cols();
    init_rows();
#endif

    // initialize matrix state: all keys off
    for (uint8_t i=0; i < MATRIX_ROWS; i++) {
        matrix[i] = 0;
        matrix_debouncing[i] = 0;
    }
    
    matrix_init_quantum();
    
}

uint8_t _matrix_scan(void)
{
    int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
#if (DIODE_DIRECTION == COL2ROW)
    // Set row, read cols
    for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
#       if (DEBOUNCING_DELAY > 0)
            bool matrix_changed = read_cols_on_row(matrix_debouncing+offset, current_row);

            if (matrix_changed) {
                debouncing = true;
                debouncing_time = timer_read();
            }

#       else
            read_cols_on_row(matrix+offset, current_row);
#       endif

    }

#elif (DIODE_DIRECTION == ROW2COL)
    // Set col, read rows
    for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
#       if (DEBOUNCING_DELAY > 0)
            bool matrix_changed = read_rows_on_col(matrix_debouncing+offset, current_col);
            if (matrix_changed) {
                debouncing = true;
                debouncing_time = timer_read();
            }
#       else
             read_rows_on_col(matrix+offset, current_col);
#       endif

    }
#endif

#   if (DEBOUNCING_DELAY > 0)
        if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) {
            for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
                matrix[i+offset] = matrix_debouncing[i+offset];
            }
            debouncing = false;
        }
#   endif

    return 1;
}

#if defined(USE_I2C) || defined(EH)

// Get rows from other half over i2c
int i2c_transaction(void) {
    int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
    int err = 0;
    
    // write backlight info
    #ifdef BACKLIGHT_ENABLE
        if (BACKLIT_DIRTY) {
            err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
            if (err) goto i2c_error;
            
            // Backlight location
            err = i2c_master_write(I2C_BACKLIT_START);
            if (err) goto i2c_error;
            
            // Write backlight 
            i2c_master_write(get_backlight_level());
            
            BACKLIT_DIRTY = false;
        }
    #endif

    err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
    if (err) goto i2c_error;

    // start of matrix stored at I2C_KEYMAP_START
    err = i2c_master_write(I2C_KEYMAP_START);
    if (err) goto i2c_error;

    // Start read
    err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ);
    if (err) goto i2c_error;

    if (!err) {
        int i;
        for (i = 0; i < ROWS_PER_HAND-1; ++i) {
            matrix[slaveOffset+i] = i2c_master_read(I2C_ACK);
        }
        matrix[slaveOffset+i] = i2c_master_read(I2C_NACK);
        i2c_master_stop();
    } else {
i2c_error: // the cable is disconnceted, or something else went wrong
        i2c_reset_state();
        return err;
    }
    
    #ifdef RGBLIGHT_ENABLE
        if (RGB_DIRTY) {
            err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
            if (err) goto i2c_error;
            
            // RGB Location
            err = i2c_master_write(I2C_RGB_START);
            if (err) goto i2c_error;
            
            uint32_t dword = eeconfig_read_rgblight();
            
            // Write RGB
            err = i2c_master_write_data(&dword, 4);
            if (err) goto i2c_error;
            
            RGB_DIRTY = false;
            i2c_master_stop();
        }
    #endif

    return 0;
}

#else // USE_SERIAL

int serial_transaction(void) {
    int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;

    if (serial_update_buffers()) {
        return 1;
    }

    for (int i = 0; i < ROWS_PER_HAND; ++i) {
        matrix[slaveOffset+i] = serial_slave_buffer[i];
    }
    return 0;
}
#endif

uint8_t matrix_scan(void)
{
    uint8_t ret = _matrix_scan();

#if defined(USE_I2C) || defined(EH)
    if( i2c_transaction() ) {
#else // USE_SERIAL
    if( serial_transaction() ) {
#endif

        error_count++;

        if (error_count > ERROR_DISCONNECT_COUNT) {
            // reset other half if disconnected
            int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
            for (int i = 0; i < ROWS_PER_HAND; ++i) {
                matrix[slaveOffset+i] = 0;
            }
        }
    } else {
        error_count = 0;
    }
    matrix_scan_quantum();
    return ret;
}

void matrix_slave_scan(void) {
    _matrix_scan();

    int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;

#if defined(USE_I2C) || defined(EH)
    for (int i = 0; i < ROWS_PER_HAND; ++i) {
        i2c_slave_buffer[I2C_KEYMAP_START+i] = matrix[offset+i];
    }   
#else // USE_SERIAL
    for (int i = 0; i < ROWS_PER_HAND; ++i) {
        serial_slave_buffer[i] = matrix[offset+i];
    }
#endif
    matrix_slave_scan_user();
}

bool matrix_is_modified(void)
{
    if (debouncing) return false;
    return true;
}

inline
bool matrix_is_on(uint8_t row, uint8_t col)
{
    return (matrix[row] & ((matrix_row_t)1<<col));
}

inline
matrix_row_t matrix_get_row(uint8_t row)
{
    return matrix[row];
}

void matrix_print(void)
{
    print("\nr/c 0123456789ABCDEF\n");
    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
        phex(row); print(": ");
        pbin_reverse16(matrix_get_row(row));
        print("\n");
    }
}

uint8_t matrix_key_count(void)
{
    uint8_t count = 0;
    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
        count += bitpop16(matrix[i]);
    }
    return count;
}

#if (DIODE_DIRECTION == COL2ROW)

static void init_cols(void)
{
    for(uint8_t x = 0; x < MATRIX_COLS; x++) {
        uint8_t pin = col_pins[x];
        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
    }
}

static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
{
    // Store last value of row prior to reading
    matrix_row_t last_row_value = current_matrix[current_row];

    // Clear data in matrix row
    current_matrix[current_row] = 0;

    // Select row and wait for row selecton to stabilize
    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 = col_pins[col_index];
        uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));

        // Populate the matrix row with the state of the col pin
        current_matrix[current_row] |=  pin_state ? 0 : (ROW_SHIFTER << col_index);
    }

    // Unselect row
    unselect_row(current_row);

    return (last_row_value != current_matrix[current_row]);
}

static void select_row(uint8_t row)
{
    uint8_t pin = row_pins[row];
    _SFR_IO8((pin >> 4) + 1) |=  _BV(pin & 0xF); // OUT
    _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
}

static void unselect_row(uint8_t row)
{
    uint8_t pin = row_pins[row];
    _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
    _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
}

static void unselect_rows(void)
{
    for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
        uint8_t pin = row_pins[x];
        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
    }
}

#elif (DIODE_DIRECTION == ROW2COL)

static void init_rows(void)
{
    for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
        uint8_t pin = row_pins[x];
        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
    }
}

static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
{
    bool matrix_changed = false;

    // Select col and wait for col selecton to stabilize
    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];

        // Check row pin state
        if ((_SFR_IO8(row_pins[row_index] >> 4) & _BV(row_pins[row_index] & 0xF)) == 0)
        {
            // Pin LO, set col bit
            current_matrix[row_index] |= (ROW_SHIFTER << current_col);
        }
        else
        {
            // Pin HI, clear col bit
            current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
        }

        // Determine if the matrix changed state
        if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
        {
            matrix_changed = true;
        }
    }

    // Unselect col
    unselect_col(current_col);

    return matrix_changed;
}

static void select_col(uint8_t col)
{
    uint8_t pin = col_pins[col];
    _SFR_IO8((pin >> 4) + 1) |=  _BV(pin & 0xF); // OUT
    _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
}

static void unselect_col(uint8_t col)
{
    uint8_t pin = col_pins[col];
    _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
    _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
}

static void unselect_cols(void)
{
    for(uint8_t x = 0; x < MATRIX_COLS; x++) {
        uint8_t pin = col_pins[x];
        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
    }
}

#endif

A quantum/split_common/serial.c => quantum/split_common/serial.c +228 -0
@@ 0,0 1,228 @@
/*
 * WARNING: be careful changing this code, it is very timing dependent
 */

#ifndef F_CPU
#define F_CPU 16000000
#endif

#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <stdbool.h>
#include "serial.h"

#ifndef USE_I2C

// Serial pulse period in microseconds. Its probably a bad idea to lower this
// value.
#define SERIAL_DELAY 24

uint8_t volatile serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH] = {0};
uint8_t volatile serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH] = {0};

#define SLAVE_DATA_CORRUPT (1<<0)
volatile uint8_t status = 0;

inline static
void serial_delay(void) {
  _delay_us(SERIAL_DELAY);
}

inline static
void serial_output(void) {
  SERIAL_PIN_DDR |= SERIAL_PIN_MASK;
}

// make the serial pin an input with pull-up resistor
inline static
void serial_input(void) {
  SERIAL_PIN_DDR  &= ~SERIAL_PIN_MASK;
  SERIAL_PIN_PORT |= SERIAL_PIN_MASK;
}

inline static
uint8_t serial_read_pin(void) {
  return !!(SERIAL_PIN_INPUT & SERIAL_PIN_MASK);
}

inline static
void serial_low(void) {
  SERIAL_PIN_PORT &= ~SERIAL_PIN_MASK;
}

inline static
void serial_high(void) {
  SERIAL_PIN_PORT |= SERIAL_PIN_MASK;
}

void serial_master_init(void) {
  serial_output();
  serial_high();
}

void serial_slave_init(void) {
  serial_input();

  // Enable INT0
  EIMSK |= _BV(INT0);
  // Trigger on falling edge of INT0
  EICRA &= ~(_BV(ISC00) | _BV(ISC01));
}

// Used by the master to synchronize timing with the slave.
static
void sync_recv(void) {
  serial_input();
  // This shouldn't hang if the slave disconnects because the
  // serial line will float to high if the slave does disconnect.
  while (!serial_read_pin());
  serial_delay();
}

// Used by the slave to send a synchronization signal to the master.
static
void sync_send(void) {
  serial_output();

  serial_low();
  serial_delay();

  serial_high();
}

// Reads a byte from the serial line
static
uint8_t serial_read_byte(void) {
  uint8_t byte = 0;
  serial_input();
  for ( uint8_t i = 0; i < 8; ++i) {
    byte = (byte << 1) | serial_read_pin();
    serial_delay();
    _delay_us(1);
  }

  return byte;
}

// Sends a byte with MSB ordering
static
void serial_write_byte(uint8_t data) {
  uint8_t b = 8;
  serial_output();
  while( b-- ) {
    if(data & (1 << b)) {
      serial_high();
    } else {
      serial_low();
    }
    serial_delay();
  }
}

// interrupt handle to be used by the slave device
ISR(SERIAL_PIN_INTERRUPT) {
  sync_send();

  uint8_t checksum = 0;
  for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) {
    serial_write_byte(serial_slave_buffer[i]);
    sync_send();
    checksum += serial_slave_buffer[i];
  }
  serial_write_byte(checksum);
  sync_send();

  // wait for the sync to finish sending
  serial_delay();

  // read the middle of pulses
  _delay_us(SERIAL_DELAY/2);

  uint8_t checksum_computed = 0;
  for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) {
    serial_master_buffer[i] = serial_read_byte();
    sync_send();
    checksum_computed += serial_master_buffer[i];
  }
  uint8_t checksum_received = serial_read_byte();
  sync_send();

  serial_input(); // end transaction

  if ( checksum_computed != checksum_received ) {
    status |= SLAVE_DATA_CORRUPT;
  } else {
    status &= ~SLAVE_DATA_CORRUPT;
  }
}

inline
bool serial_slave_DATA_CORRUPT(void) {
  return status & SLAVE_DATA_CORRUPT;
}

// Copies the serial_slave_buffer to the master and sends the
// serial_master_buffer to the slave.
//
// Returns:
// 0 => no error
// 1 => slave did not respond
int serial_update_buffers(void) {
  // this code is very time dependent, so we need to disable interrupts
  cli();

  // signal to the slave that we want to start a transaction
  serial_output();
  serial_low();
  _delay_us(1);

  // wait for the slaves response
  serial_input();
  serial_high();
  _delay_us(SERIAL_DELAY);

  // check if the slave is present
  if (serial_read_pin()) {
    // slave failed to pull the line low, assume not present
    sei();
    return 1;
  }

  // if the slave is present syncronize with it
  sync_recv();

  uint8_t checksum_computed = 0;
  // receive data from the slave
  for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) {
    serial_slave_buffer[i] = serial_read_byte();
    sync_recv();
    checksum_computed += serial_slave_buffer[i];
  }
  uint8_t checksum_received = serial_read_byte();
  sync_recv();

  if (checksum_computed != checksum_received) {
    sei();
    return 1;
  }

  uint8_t checksum = 0;
  // send data to the slave
  for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) {
    serial_write_byte(serial_master_buffer[i]);
    sync_recv();
    checksum += serial_master_buffer[i];
  }
  serial_write_byte(checksum);
  sync_recv();

  // always, release the line when not in use
  serial_output();
  serial_high();

  sei();
  return 0;
}

#endif

A quantum/split_common/serial.h => quantum/split_common/serial.h +26 -0
@@ 0,0 1,26 @@
#ifndef MY_SERIAL_H
#define MY_SERIAL_H

#include "config.h"
#include <stdbool.h>

/* TODO:  some defines for interrupt setup */
#define SERIAL_PIN_DDR DDRD
#define SERIAL_PIN_PORT PORTD
#define SERIAL_PIN_INPUT PIND
#define SERIAL_PIN_MASK _BV(PD0)
#define SERIAL_PIN_INTERRUPT INT0_vect

#define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
#define SERIAL_MASTER_BUFFER_LENGTH 1

// Buffers for master - slave communication
extern volatile uint8_t serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH];
extern volatile uint8_t serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH];

void serial_master_init(void);
void serial_slave_init(void);
int serial_update_buffers(void);
bool serial_slave_data_corrupt(void);

#endif

A quantum/split_common/split_flags.c => quantum/split_common/split_flags.c +5 -0
@@ 0,0 1,5 @@
#include "split_flags.h"

volatile bool RGB_DIRTY = false;

volatile bool BACKLIT_DIRTY = false;
\ No newline at end of file

A quantum/split_common/split_flags.h => quantum/split_common/split_flags.h +20 -0
@@ 0,0 1,20 @@
#ifndef SPLIT_FLAGS_H
#define SPLIT_FLAGS_H

#include <stdbool.h>
#include <stdint.h>

/** 
* Global Flags
**/

//RGB Stuff
extern volatile bool RGB_DIRTY;


//Backlight Stuff
extern volatile bool BACKLIT_DIRTY;



#endif
\ No newline at end of file

A quantum/split_common/split_util.c => quantum/split_common/split_util.c +145 -0
@@ 0,0 1,145 @@
#include <avr/io.h>
#include <avr/wdt.h>
#include <avr/power.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <avr/eeprom.h>
#include "split_util.h"
#include "matrix.h"
#include "keyboard.h"
#include "config.h"
#include "timer.h"
#include "split_flags.h"

#ifdef RGBLIGHT_ENABLE
#   include "rgblight.h"
#endif
#ifdef BACKLIGHT_ENABLE
#   include "backlight.h"
#endif

#ifdef SPLIT_HAND_PIN
#   include "pincontrol.h"
#endif

#if defined(USE_I2C) || defined(EH)
#  include "i2c.h"
#else
#  include "serial.h"
#endif

volatile bool isLeftHand = true;

volatile uint8_t setTries = 0;

static void setup_handedness(void) {
  #ifdef SPLIT_HAND_PIN
    // Test pin SPLIT_HAND_PIN for High/Low, if low it's right hand
    pinMode(SPLIT_HAND_PIN, PinDirectionInput);
    isLeftHand = digitalRead(SPLIT_HAND_PIN);
  #else
    #ifdef EE_HANDS
      isLeftHand = eeprom_read_byte(EECONFIG_HANDEDNESS);
    #else
      // I2C_MASTER_RIGHT is deprecated, use MASTER_RIGHT instead, since this works for both serial and i2c
      #if defined(I2C_MASTER_RIGHT) || defined(MASTER_RIGHT)
        isLeftHand = !has_usb();
      #else
        isLeftHand = has_usb();
      #endif
    #endif
  #endif
}

static void keyboard_master_setup(void) {
#if defined(USE_I2C) || defined(EH)
  i2c_master_init();
  #ifdef SSD1306OLED
    matrix_master_OLED_init ();
  #endif
#else
  serial_master_init();
#endif

    // For master the Backlight info needs to be sent on startup
    // Otherwise the salve won't start with the proper info until an update
    BACKLIT_DIRTY = true;
}

static void keyboard_slave_setup(void) {
  timer_init();
#if defined(USE_I2C) || defined(EH)
    i2c_slave_init(SLAVE_I2C_ADDRESS);
#else
    serial_slave_init();
#endif
}

bool has_usb(void) {
   USBCON |= (1 << OTGPADE); //enables VBUS pad
   _delay_us(5);
   return (USBSTA & (1<<VBUS));  //checks state of VBUS
}

void split_keyboard_setup(void) {
   setup_handedness();

   if (has_usb()) {
      keyboard_master_setup();
   } else {
      keyboard_slave_setup();
   }
   sei();
}

void keyboard_slave_loop(void) {
   matrix_init();
   
   //Init RGB
   #ifdef RGBLIGHT_ENABLE
      rgblight_init();
   #endif

   while (1) {
      matrix_slave_scan();
      
      // read backlight info
    #ifdef BACKLIGHT_ENABLE
        if (BACKLIT_DIRTY) {
            backlight_set(i2c_slave_buffer[I2C_BACKLIT_START]);
            BACKLIT_DIRTY = false;
        }
    #endif
    #ifdef RGBLIGHT_ENABLE
        if (RGB_DIRTY) {
            cli();
            uint32_t dword;
            
            /*dword = i2c_slave_buffer[I2C_RGB_START + 3];
            dword = (dword << 8) + i2c_slave_buffer[I2C_RGB_START + 2];
            dword = (dword << 8) + i2c_slave_buffer[I2C_RGB_START + 1];
            dword = (dword << 8) + i2c_slave_buffer[I2C_RGB_START];*/
            
            
            uint8_t *dword_dat = (uint8_t *)(&dword);
            for (int i = 0; i < 4; i++) {
                dword_dat[i] = i2c_slave_buffer[I2C_RGB_START+i];
            }

            rgblight_update_dword(dword);
            RGB_DIRTY = false;
            sei();
        }
    #endif
   }
}

// this code runs before the usb and keyboard is initialized
void matrix_setup(void) {
    split_keyboard_setup();

    if (!has_usb()) {
        //rgblight_init();
        keyboard_slave_loop();
    }
}

A quantum/split_common/split_util.h => quantum/split_common/split_util.h +23 -0
@@ 0,0 1,23 @@
#ifndef SPLIT_KEYBOARD_UTIL_H
#define SPLIT_KEYBOARD_UTIL_H

#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "eeconfig.h"

#define SLAVE_I2C_ADDRESS           0x32

extern volatile bool isLeftHand;

// slave version of matix scan, defined in matrix.c
void matrix_slave_scan(void);

void split_keyboard_setup(void);
bool has_usb(void);
void keyboard_slave_loop(void);

void matrix_master_OLED_init (void);

#endif