Removed unneeded code from keymap

Platform compatibility descriptions added for mute, volume up/down

docs/feature_common_shortcuts.md

@@ -39,7 +39,7 @@ If you are just getting started with QMK you will want to keep everything simple
 
 ### Intermediate Users
 
-Sometimes you need more than one base layer. For example, if you want to switch between QWERTY and Dvorak, switch between layouts for different countries, or switch your layout for different videogames. Your base layers should always be the lowest numbered layers. When you have multiple base layers you should always treat them as multually exclusive. When one base layer is on the others are off. 
+Sometimes you need more than one base layer. For example, if you want to switch between QWERTY and Dvorak, switch between layouts for different countries, or switch your layout for different videogames. Your base layers should always be the lowest numbered layers. When you have multiple base layers you should always treat them as mutually exclusive. When one base layer is on the others are off. 
 
 ### Advanced Users
 

docs/getting_started_build_tools.md

@@ -36,7 +36,15 @@ Debian/Ubuntu example:
     sudo apt-get update
     sudo apt-get install gcc unzip wget zip gcc-avr binutils-avr avr-libc dfu-programmer dfu-util gcc-arm-none-eabi binutils-arm-none-eabi libnewlib-arm-none-eabi
 
-# Mac
+## Nix
+
+If you're on [NixOS](https://nixos.org/), or have Nix installed on Linux or macOS, run `nix-shell` from the repository root to get a build environment.
+
+By default, this will download compilers for both AVR and ARM. If you don't need both, disable the `avr` or `arm` arguments, e.g.:
+
+    nix-shell --arg arm false
+
+## Mac
 If you're using [homebrew,](http://brew.sh/) you can use the following commands:
 
     brew tap osx-cross/avr

docs/keycodes.md

@@ -152,12 +152,12 @@ When defining a [keymap](keymap.md) each key needs a valid key definition. This
 |`KC_WWW_REFRESH`|`KC_WREF`||
 |`KC_WWW_FAVORITES`|`KC_WFAV`||
 |`KC_STOP`||Stop|
-|`KC__MUTE`||Mute|
+|`KC__MUTE`||Mute (macOS)|
-|`KC__VOLUP`||Volume Up|
+|`KC__VOLUP`||Volume Up (macOS)|
-|`KC__VOLDOWN`||Volume Down|
+|`KC__VOLDOWN`||Volume Down (macOS)|
-|`KC_AUDIO_MUTE`|`KC_MUTE`||
+|`KC_AUDIO_MUTE`|`KC_MUTE`|Mute (Windows/macOS/Linux)|
-|`KC_AUDIO_VOL_UP`|`KC_VOLU`||
+|`KC_AUDIO_VOL_UP`|`KC_VOLU`|Volume Up (Windows/macOS/Linux)|
-|`KC_AUDIO_VOL_DOWN`|`KC_VOLD`||
+|`KC_AUDIO_VOL_DOWN`|`KC_VOLD`|Volume Down (Windows/macOS/Linux)|
 |`KC_MEDIA_NEXT_TRACK`|`KC_MNXT`|Next Track (Windows)|
 |`KC_MEDIA_PREV_TRACK`|`KC_MPRV`|Previous Track (Windows)|
 |`KC_MEDIA_FAST_FORWARD`|`KC_MFFD`|Next Track (macOS)|

docs/keycodes_basic.md

@@ -125,12 +125,12 @@ Windows and Mac use different key codes for next track and previous track. Make
 |Long Name|Short Name|Description|
 |---------|----------|-----------|
 |KC_STOP||Stop|
-|KC__MUTE||Mute|
+|KC__MUTE||Mute (macOS)|
-|KC__VOLUP||Volume Up|
+|KC__VOLUP||Volume Up (macOS)|
-|KC__VOLDOWN||Volume Down|
+|KC__VOLDOWN||Volume Down (macOS)|
-|KC_AUDIO_MUTE|KC_MUTE||
+|KC_AUDIO_MUTE|KC_MUTE|Mute (Windows/macOS/Linux)|
-|KC_AUDIO_VOL_UP|KC_VOLU||
+|KC_AUDIO_VOL_UP|KC_VOLU|Volume Up (Windows/macOS/Linux)|
-|KC_AUDIO_VOL_DOWN|KC_VOLD||
+|KC_AUDIO_VOL_DOWN|KC_VOLD|Volume Down (Windows/macOS/Linux)|
 |KC_MEDIA_NEXT_TRACK|KC_MNXT|Next Track (Windows)|
 |KC_MEDIA_PREV_TRACK|KC_MPRV|Previous Track (Windows)|
 |KC_MEDIA_FAST_FORWARD|KC_MFFD|Next Track (macOS)|

keyboards/dz60/config.h

@@ -46,9 +46,9 @@
 
 #define RGB_DI_PIN E2
 #define RGBLIGHT_ANIMATIONS
-#define RGBLED_NUM 20
+#define RGBLED_NUM 16
 #define RGBLIGHT_HUE_STEP 8
 #define RGBLIGHT_SAT_STEP 8
 #define RGBLIGHT_VAL_STEP 8
 
-#endif
+#endif

keyboards/dz60/keymaps/model42/keymap.c

@@ -0,0 +1,65 @@
+#include "dz60.h"
+#include "action_layer.h"
+
+// Hard Reload Chrome
+enum dz60_keycodes {
+	LT_1_OR_RELOAD_CHROME = SAFE_RANGE
+};
+
+const uint16_t PROGMEM keymaps[][5][15] = {
+// layer 0
+KEYMAP_DIRECTIONAL(KC_GRV, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS, KC_EQL, KC_PGUP, KC_PGDN,
+       KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_LBRC, KC_RBRC, KC_BSLS,
+       KC_ESC, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT, KC_ENT,
+       KC_LSFT, LT(3, KC_Z), KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, MT(MOD_RSFT, KC_SLSH), KC_UP, KC_SLSH,
+       KC_LCTL, KC_LALT, KC_LGUI, KC_SPC, LT(4, KC_SPC), KC_BSPC, MO(2), LT_1_OR_RELOAD_CHROME, KC_LEFT, KC_DOWN, KC_RGHT),
+
+// layer 1
+KEYMAP_DIRECTIONAL(KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, RGB_TOG, RGB_MOD, RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD, RGB_VAI, RGB_VAD, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RESET,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, BL_DEC, BL_TOGG, BL_INC, BL_STEP, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+
+// layer 2
+KEYMAP_DIRECTIONAL(KC_TRNS, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_HOME, KC_END,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+
+// layer 3
+KEYMAP_DIRECTIONAL(KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+
+// layer 4
+KEYMAP_DIRECTIONAL(KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_MS_BTN1, KC_MS_UP, KC_MS_BTN2, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_MS_LEFT, KC_MS_DOWN, KC_MS_RIGHT, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+};
+
+uint16_t custom_lt_timer;
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+	if(LT_1_OR_RELOAD_CHROME == keycode) {
+		if(record->event.pressed) {
+			custom_lt_timer = timer_read();
+			layer_on(1);
+		} else {
+			layer_off(1);
+			if (timer_elapsed(custom_lt_timer) < 200) {
+				register_code(KC_LGUI);
+				register_code(KC_RSHIFT);
+				register_code(KC_R);
+				unregister_code(KC_R);
+				unregister_code(KC_RSHIFT);
+				unregister_code(KC_LGUI);
+			}
+		}
+	}
+	return true;
+}

keyboards/dz60/keymaps/model42/readme.md

@@ -0,0 +1,42 @@
+# yanfali's keymap for KBDFans DZ60 PCB
+
+## 4 Layers
+
+### Layer 0
+
+![layer 0](https://imgur.com/bOiQI69.png)
+Conventional ANSI layout. Except:
+
+ - Backspace has been replaced with 2 keys
+   - PGUP
+   - PGDN
+ - 2.25U Left shift is now 1.25U with 1U key LT(layer 3, KC_Z)
+ - Bottom right shift is 1.75U. Has arrow cluster. Tap right shift for / and dedicated / key is to far right.
+ - Bottom row, split space bar
+   - 2.75U (Space)
+   - 1.25U (mouse key + WASD) with LT(4, KC_SPC)
+   - 2.25U (backspace)
+   - 1U MO(layer 2)
+   - 1U LT(layer 1, SHIFT+LGUI+R)
+   - arrows.
+
+### Layer 1
+
+![layer 1](https://imgur.com/X7iKNxQ.png)
+RGB underglow and backlight controls, Reset
+
+### Layer 2
+
+![layer 1](https://imgur.com/gELh7Se.png)
+F1-F12, PGUP -> HOME, PGDN -> END
+
+### Layer 3
+
+Unused at this time but tied to 3 FN key to right of 1.25U left shift.
+
+### Layer 4
+
+ * WASD - Mouse controls
+ * Q - Btn 1
+ * E - Btn 2
+

keyboards/gherkin/README.md

@@ -5,8 +5,8 @@ A 30 key keyboard.
 
 * [The original TMK firmware](https://github.com/di0ib/tmk_keyboard/tree/master/keyboard/gherkin)
 
-Keyboard Maintainer: QMK Community
+Keyboard Maintainer: QMK Community  
-Hardware Supported: Gherkin PCB
+Hardware Supported: Gherkin PCB  
 Hardware Availability: [Gherkin project on 40% Keyboards](http://www.40percent.club/2016/11/gherkin.html)
 
 Make example for this keyboard (after setting up your build environment):

keyboards/gherkin/config.h

@@ -7,9 +7,9 @@
 #define VENDOR_ID       0xFEED
 #define PRODUCT_ID      0x6060
 #define DEVICE_VER      0x0001
-#define MANUFACTURER    qmkbuilder
+#define MANUFACTURER    40 Percent Club
-#define PRODUCT         keyboard
+#define PRODUCT         Gherkin
-#define DESCRIPTION     Keyboard
+#define DESCRIPTION     A 30 key ortholinear keyboard
 
 /* key matrix size */
 #define MATRIX_ROWS 5

keyboards/gherkin/keymaps/itsaferbie/config.h

@@ -0,0 +1,15 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+#undef RGB_DI_PIN
+#undef RGBLED_NUM
+#define RGB_DI_PIN D2
+#define RGBLIGHT_ANIMATIONS
+#define RGBLED_NUM 8
+#define RGBLIGHT_HUE_STEP 8
+#define RGBLIGHT_SAT_STEP 8
+#define RGBLIGHT_VAL_STEP 8
+
+#endif

keyboards/gherkin/keymaps/itsaferbie/keymap.c

@@ -0,0 +1,117 @@
+#include "gherkin.h"
+#include "action_layer.h"
+
+extern rgblight_config_t rgblight_config;
+extern keymap_config_t keymap_config;
+
+#define _PS 0 // This is the Photoshop Layer
+#define _AI 1 // This is the Illustrator Layer
+#define _PR 2 // This is the Premier Layer
+
+enum custom_keycodes {
+	PS = SAFE_RANGE,
+	AI,
+	PR,
+};
+
+#define PS TO(0)
+#define AI TO(1)
+#define PR TO(2)
+
+// Mix of Photoshop, Illustrator, and Premiere shortcuts.
+#define SAVE  LCTL(KC_S)
+#define OPEN  LCTL(KC_O)
+#define COPY  LCTL(KC_C)
+#define PAST  LCTL(KC_V)
+#define CUNDO LCTL(LALT(KC_Z))
+#define INVERT LCTL(LSFT(KC_I))
+#define NLAYER LSFT(LCTL(KC_N))
+#define UNDO LCTL(KC_Z)
+#define TRANS LCTL(KC_T)
+#define ALIGNL LCTL(LSFT(KC_L))
+#define ALIGNC LCTL(LSFT(KC_C))
+#define ALIGNR LCTL(LSFT(KC_R))
+#define BRINGF LCTL(KC_RBRC)
+#define BRINGB LCTL(KC_LBRC)
+
+// Some illustrator only shortcuts.
+#define SHAPE LSFT(KC_M)
+#define RULER LCTL(LALT(KC_R))
+
+// Premiere only shortcuts.
+#define REDO LCTL(LSFT(KC_Z))
+#define EXPORT LCTL(KC_M)
+#define IMPORT LCTL(KC_I)
+#define PCOPY LCTL(KC_V)
+#define PPASTE LCTL(LSFT(KC_V))
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+	// Photoshop layer.
+	[_PS] = KEYMAP(
+		SAVE,    KC_W, KC_E, KC_T,  KC_U,   KC_I,   KC_P,   INVERT, CUNDO,    NLAYER,
+		UNDO,    KC_H, KC_L, TRANS, ALIGNL, ALIGNC, ALIGNR, BRINGB,  BRINGF,  OPEN,
+		KC_LSFT, COPY, PAST, KC_Z,  KC_C,   KC_V,   KC_B,   KC_LBRC, KC_RBRC, AI),
+
+	[_AI] = KEYMAP(
+		KC_TRNS, M(0),    RULER,   KC_TRNS, KC_G,    KC_TRNS, KC_TRNS, KC_Q,  KC_MINS, KC_PLUS,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_E,    KC_TRNS, KC_TRNS, KC_TRNS, SHAPE, KC_O,    OPEN,  
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_M,  KC_SLSH, PR),
+
+	[_PR] = KEYMAP(
+		KC_TRNS, KC_Q,  KC_W,   KC_I,   KC_O, KC_P, IMPORT, EXPORT,  KC_MINS,  KC_EQL,
+		KC_TRNS, REDO,  KC_D,   KC_F,   KC_H, KC_M, KC_ENT, KC_LBRC, KC_RBRC,  OPEN,  
+		KC_TRNS, PCOPY, PPASTE, KC_SPC, KC_Z, KC_C, KC_V,   KC_LEFT, KC_RIGHT, PS),
+
+};
+
+void persistent_default_layer_set(uint16_t default_layer) {
+	eeconfig_update_default_layer(default_layer);
+	default_layer_set(default_layer);
+}
+
+void matrix_init_user(void) {
+	rgblight_enable();
+}
+
+void matrix_scan_user(void) {
+	#ifdef RGBLIGHT_ENABLE
+
+	static uint8_t old_layer = 255;
+	uint8_t new_layer = biton32(layer_state);
+
+	// Color of the Icons.
+	if (old_layer != new_layer) {
+		switch (new_layer) {
+			case _PS:
+			  rgblight_setrgb(49, 197, 240);
+			break;
+			case _AI:
+			  rgblight_setrgb(255, 128, 17);
+			break;
+			case _PR:
+			  rgblight_setrgb(231, 136, 255);
+			break;
+		}
+		old_layer = new_layer;
+	}
+	#endif
+}
+
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt) {
+	keyevent_t event = record->event;
+    (void)event;
+
+	switch (id) {
+		case 0:
+			// Save for Web Macro.
+			return MACRO(D(LSFT), D(LALT), D(LCTL), T(S), U(LCTL), U(LALT), U(LSFT), END);
+	}
+	return MACRO_NONE;
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+	switch (keycode) {
+	}
+	return true;
+}

keyboards/gherkin/keymaps/itsaferbie/rules.mk

@@ -0,0 +1,7 @@
+BACKLIGHT_ENABLE = yes
+AUDIO_ENABLE = no
+RGBLIGHT_ENABLE = yes
+
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif

keyboards/planck/keymaps/bbaserdem/README.md

@@ -0,0 +1,35 @@
+# Planck Layout
+
+Built this planck layout to use DVORAK with an unorthodox Turkish layout.
+If you used a previous layout with a persistent base layer change,
+change it to 0 before proceeding.
+The layout has the following functionality
+
+* **QWERTY** can be toggled on/off from **Function** layer.
+* **Mouse** layer allows manipulation of the mouse.
+* **Function** layer has F and special keys.
+* **Symbol** layer has numericals and symbols.
+* **Game** layout can be toggled on/off from **Function** layer.
+* **Music** layer allows playing sounds like a keyboard.
+
+Double tapping **Mouse**, **Function** and **Symbol** layers activate them until deacivation.
+Topleftmost key turns off **Function**, **Symbol**, **Game** and **Music** layers,
+and puts the board into *reset* mode from the **Mouse** layer.
+
+# Using Turkish letters
+
+Instead of a turkish F keyboard layout (very inconvenient to code in),
+I opted to modulate characters like an *AltGr* impleentation.
+Tap and holding *Alt* on **DVORAK** and **QWERTY** layer will change some letters
+to Turkish equivelants.
+Shifting these letters will work.
+The keycodes should transmit the correct unicode characters combined with shift.
+The turkish letters are sent via the unicode implementation.
+No software layout change is neccessary (hence making coding easier).
+By default, the unicode is set to Linux mode. Switch to windows (non-persistent)
+can be done from the associated key in **Function** layer.
+**Symbol** layer also has the symbol for Turkish Lira.
+
+# To improve
+
+I want to write a couple pieces of my own music for layer switching.

keyboards/planck/keymaps/bbaserdem/config.h

@@ -0,0 +1,44 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+#ifdef AUDIO_ENABLE
+    // Compose own song in future
+    #define STARTUP_SONG SONG(PLANCK_SOUND)
+
+    #define DEFAULT_LAYER_SONGS { SONG(QWERTY_SOUND), \
+                                  SONG(COLEMAK_SOUND), \
+                                  SONG(DVORAK_SOUND) \
+                                }
+#endif
+
+// Enables tap magic
+#define TAPPING_TERM 300
+#define TAPPING_TOGGLE 1
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/planck/keymaps/bbaserdem/keymap.c

@@ -0,0 +1,413 @@
+/* Copyright 2015-2017 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/>.
+ */
+
+#include "planck.h"
+
+#define _______ KC_TRNS
+#define XXX KC_NO
+
+#define _DV 0
+#define _TD 1
+#define _GM 2
+#define _MO 3
+#define _SY 4
+#define _FN 5
+#define _MS 6
+
+#define PARAN TD(PAR)
+#define CURLY TD(CUR)
+#define SQUAR TD(SQU)
+#define ANGUL TD(ANG)
+
+#define UNDO    LCTL(KC_Z)
+#define REDO    LCTL(KC_Y)
+#define COPYCUT TD(CPC)
+#define PASTE   LCTL(KC_V)
+
+#define MO_SC_U KC_MS_WH_UP
+#define MO_SC_D KC_MS_WH_DOWN
+#define MO_SC_L KC_MS_WH_LEFT
+#define MO_SC_R KC_MS_WH_RIGHT
+#define MO_U    KC_MS_UP
+#define MO_D    KC_MS_DOWN
+#define MO_L    KC_MS_LEFT
+#define MO_R    KC_MS_RIGHT
+#define MO_CL_L KC_MS_BTN1
+#define MO_CL_R KC_MS_BTN2
+#define MO_CL_M KC_MS_BTN3
+#define MO_CL_1 KC_MS_BTN4
+#define MO_CL_2 KC_MS_BTN5
+#define MO_AC_0 KC_MS_ACCEL0
+#define MO_AC_1 KC_MS_ACCEL1
+#define MO_AC_2 KC_MS_ACCEL2
+
+#define PHY_HB UC(0x0127)
+#define PHY_DE UC(0xc2b0)
+#define TUR_TL UC(0x20ba)
+#define EUR_ER UC(0x20ac)
+#define EUR_PN UC(0x00a3)
+
+enum custom_keycodes {
+    TUR_A = SAFE_RANGE,
+    TUR_C,
+    TUR_G,
+    TUR_I,
+    TUR_O,
+    TUR_S,
+    TUR_U,
+    UNI_LI,
+    UNI_WN
+};
+
+// Tap dance
+enum {
+    ATD = 0,
+    CLS,
+    SCL,
+    QUO,
+    PAR,
+    CUR,
+    SQU,
+    ANG,
+    CPC
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Dvorak
+ * ,------------------------------------------------------------------------.
+ * | Blt |  "  |  ,  |  .  |  P  |  Y  ||  F  |  G  |  C  |  R  |  L  | Bkp |
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * | Esc |  A  |  O  |  E  |  U  |  I  ||  D  |  H  |  T  |  N  |  S  | Del |
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * |Sh\CL| ; : |  Q  |  J  |  K  |  X  ||  B  |  M  |  W  |  V  |  Z  |MOUSE|
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * | Ctl | Alt | Meta| Tab | SYM | Spc || Ent | FUN | Lft | Dwn |  Up | Rgt |
+ * `------------------------------------------------------------------------'
+ */
+[_DV] = {
+  {BL_STEP,TD(QUO),KC_COMM,KC_DOT, KC_P,   KC_Y,   KC_F,   KC_G,   KC_C,   KC_R,   KC_L,   KC_BSPC},
+  {KC_ESC ,KC_A,   KC_O,   KC_E,   KC_U,   KC_I,   KC_D,   KC_H,   KC_T,   KC_N,   KC_S,   KC_DEL },
+  {TD(CLS),TD(SCL),KC_Q,   KC_J,   KC_K,   KC_X,   KC_B,   KC_M,   KC_W,   KC_V,   KC_Z,   TT(_MO)},
+  {KC_LCTL,TD(ATD),KC_LGUI,KC_TAB, TT(_SY),KC_SPC, KC_ENT, TT(_FN),KC_LEFT,KC_DOWN,KC_UP,  KC_RGHT}
+},
+[_TD] = {
+  {_______,_______,_______,_______,_______,_______,_______, TUR_G, TUR_C,  _______,_______,_______},
+  {_______, TUR_A,  TUR_O, _______, TUR_U,  TUR_I, _______, PHY_HB,_______,_______, TUR_S, _______},
+  {_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______},
+  {_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______}
+},
+
+/* Game layer
+ * ,------------------------------------------------------------------------.
+ * | OFF |  Q  |  W  |  E  |  R  |  T  ||  F1 |  F2 | Ctrl|  ^  |Shift| Esc |
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * |  ~  |  A  |  S  |  D  |  F  |  G  ||  F3 |  F4 |  <  |  v  |  >  |Enter|
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * | Shf |  Z  |  X  |  C  |  V  |  B  ||  F5 |  F6 |  ,  |  .  | / ? | Alt |
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * | Alt | Ctrl| ` ~ | - _ |     | Spc || Spc |     |  1  |  2  |  3  |  4  |
+ * `------------------------------------------------------------------------'
+ */
+[_GM] = {
+  {TG(_GM),KC_Q,   KC_W,   KC_E,   KC_R,   KC_T,   KC_F1,  KC_F2,  KC_RCTL,KC_UP,  KC_RSFT,KC_ESC },
+  {KC_TAB, KC_A,   KC_S,   KC_D,   KC_F,   KC_G,   KC_F3,  KC_F4,  KC_LEFT,KC_DOWN,KC_RGHT,KC_ENT },
+  {KC_LSFT,KC_Z,   KC_X,   KC_C,   KC_V,   KC_B,   KC_F5,  KC_F6,  KC_COMM,KC_DOT, KC_SLSH,KC_RALT},
+  {KC_LALT,KC_LCTL,KC_GRV, KC_MINS,_______,KC_SPC, KC_SPC, _______,KC_1,   KC_2,   KC_3,   KC_4   }
+},
+
+/* Mouse control layer
+ * ,------------------------------------------------------------------------.
+ * |     |.....|  ^  |.....|.....|Acc 2||.....|.....|.....| |^| |.....|     |
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * |     |  <  |  v  |  >  |.....|Acc 1||.....|.....| <-- | |v| | --> |     |
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * |     | Left| Mid |Right|.....|Acc 0||.....|.....|Btn 4|.....|Btn 5|     |
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * |     |     |     |     |     |     ||     |     |     |     |     |     |
+ * `------------------------------------------------------------------------'
+ */
+[_MO] = {
+  {TG(_MO),XXX,    MO_U,   XXX,    XXX,    MO_AC_2,XXX,    XXX,    XXX,    MO_SC_U,XXX,    _______},
+  {_______,MO_L,   MO_D,   MO_R,   XXX,    MO_AC_1,XXX,    XXX,    MO_SC_L,MO_SC_D,MO_SC_R,_______},
+  {_______,MO_CL_L,MO_CL_M,MO_CL_R,XXX,    MO_AC_0,XXX,    XXX,    MO_CL_1,XXX,    MO_CL_2,_______},
+  {_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______}
+},
+
+/* Symbols layer
+ * ,------------------------------------------------------------------------.
+ * | OFF |  !  |  1  |  2  |  3  |  &  ||  =  |  +  |  -  |  *  |  %  |     |
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * |  _  | ( ) |  4  |  5  |  6  |  \  ||  /  | [ ] | { } | < > |  |  |     |
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * |degre|  ?  |  7  |  8  |  9  |  ~  ||  `  |  @  |  #  |  $  |  ^  |     |
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * |     |     |     |  0  |     |     ||     |     |TLira| Euro|Pound|     |
+ * `------------------------------------------------------------------------'
+ */
+
+[_SY] = {
+  {TG(_SY),KC_EXLM,KC_1,   KC_2,   KC_3,   KC_AMPR,KC_EQL, KC_PLUS,KC_MINS,KC_ASTR,KC_PERC,_______},
+  {KC_UNDS,PARAN,  KC_4,   KC_5,   KC_6,   KC_BSLS,KC_SLSH,SQUAR,  CURLY,  ANGUL,  KC_PIPE,_______},
+  {PHY_DE, KC_QUES,KC_7,   KC_8,   KC_9,   KC_TILD,KC_GRV, KC_AT,  KC_HASH,KC_DLR, KC_CIRC,_______},
+  {_______,_______,_______,KC_0,   _______,_______,_______,_______,TUR_TL, EUR_ER, EUR_PN, _______}
+},
+
+/* Function layer
+ * ,------------------------------------------------------------------------.
+ * | OFF | game|music|     |     |RESET||RESET| win | lin | wake|sleep|power|
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * |  F1 |  F2 |  F3 |  F4 |  F5 |  F6 ||  F7 |  F8 |  F9 | F10 | F11 | F12 |
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * |     | undo| redo|cutcp|paste|vol 0||prtsc| ins | rev.| stop| play| next|
+ * |-----+-----+-----+-----+-----+-----++-----+-----+-----+-----+-----+-----|
+ * |     |     |     |     |     |vol -||vol +|     | home|pg dn|pg up| end |
+ * `------------------------------------------------------------------------'
+ */
+
+[_FN] = {
+  {TG(_FN),TG(_GM),MU_ON,  _______,_______,RESET,  RESET,  UNI_LI, UNI_WN ,KC_WAKE,KC_SLEP,KC_PWR },
+  {KC_F1,  KC_F2,  KC_F3,  KC_F4,  KC_F5,  KC_F6,  KC_F7,  KC_F8,  KC_F9,  KC_F10, KC_F11, KC_F12 },
+  {_______,UNDO,   REDO,   COPYCUT,PASTE,  KC_MUTE,KC_PSCR,KC_INS, KC_MPRV,KC_MSTP,KC_MPLY,KC_MNXT},
+  {_______,_______,_______,_______,_______,KC_VOLD,KC_VOLU,_______,KC_HOME,KC_PGDN,KC_PGUP,KC_END }
+},
+
+/* Music layer
+ * ,-----------------------------------------------------------------------.
+ * | OFF |rec S| stop| play|sped^|spedv|cycle|.....|.....|.....|.....|.....|
+ * |-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----|
+ * |.....|.....|.....|.....|.....|.....|.....|.....|.....|.....|.....|.....|
+ * |-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----|
+ * |.....|.....|.....|.....|.....|.....|.....|.....|.....|.....|.....|.....|
+ * |-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----|
+ * |.....|.....|.....|.....|.....|.....|.....|.....|.....|.....|.....|.....|
+ * `-----------------------------------------------------------------------'
+ */
+[_MS] = {
+    { MU_OFF, KC_LCTL, KC_LALT, KC_LGUI, KC_UP, KC_DOWN, MU_MOD, XXX, XXX, XXX, XXX, XXX },
+    { XXX,    XXX,     XXX,     XXX,     XXX,   XXX,     XXX,    XXX, XXX, XXX, XXX, XXX },
+    { XXX,    XXX,     XXX,     XXX,     XXX,   XXX,     XXX,    XXX, XXX, XXX, XXX, XXX },
+    { XXX,    XXX,     XXX,     XXX,     XXX,   XXX,     XXX,    XXX, XXX, XXX, XXX, XXX }
+}
+};
+
+// Set unicode method to linux.
+void matrix_init_user(){
+  set_unicode_input_mode(UC_LNX);
+}
+
+// User defined keys
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    // This section is a bit tedious in VIM, so I shortened lines
+  // Check for shift letter
+  bool is_capital = ( keyboard_report->mods &
+      (MOD_BIT(KC_LSFT) | MOD_BIT(KC_RSFT)) ) ^
+      ( keyboard_report->mods & MOD_BIT(KC_CAPS) );
+  switch (keycode) {
+    // Add music layer to music functionality
+    case MU_ON:
+      if (record->event.pressed) { layer_on(_MS); }
+      return true; break;
+    case MU_OFF:
+      if (record->event.pressed) { layer_off(_MS); }
+      return true; break;
+    // Turkish letters keycodes
+    case TUR_A:
+      if (record->event.pressed) {
+        if ( is_capital ) {
+            unicode_input_start(); register_hex(0x00c2); unicode_input_finish();
+        } else {
+            unicode_input_start(); register_hex(0x00e2); unicode_input_finish();
+        }
+      }
+      return false; break;
+    case TUR_U:
+      if (record->event.pressed) {
+        if ( is_capital ) {
+            unicode_input_start(); register_hex(0x00dc); unicode_input_finish();
+        } else {
+            unicode_input_start(); register_hex(0x00fc); unicode_input_finish();
+        }
+      }
+      return false; break;
+    case TUR_I:
+      if (record->event.pressed) {
+        if ( is_capital ) {
+            unicode_input_start(); register_hex(0x0130); unicode_input_finish();
+        } else {
+            unicode_input_start(); register_hex(0x0131); unicode_input_finish();
+        }
+      }
+      return false; break;
+    case TUR_O:
+      if (record->event.pressed) {
+        if ( is_capital ) {
+            unicode_input_start(); register_hex(0x00d6); unicode_input_finish();
+        } else {
+            unicode_input_start(); register_hex(0x00f6); unicode_input_finish();
+        }
+      }
+      return false; break;
+    case TUR_S:
+      if (record->event.pressed) {
+        if ( is_capital ) {
+            unicode_input_start(); register_hex(0x015e); unicode_input_finish();
+        } else {
+            unicode_input_start(); register_hex(0x015f); unicode_input_finish();
+        }
+      }
+      return false; break;
+    case TUR_G:
+      if (record->event.pressed) {
+        if ( is_capital ) {
+            unicode_input_start(); register_hex(0x011e); unicode_input_finish();
+        } else {
+            unicode_input_start(); register_hex(0x011f); unicode_input_finish();
+        }
+      }
+      return false; break;
+    case TUR_C:
+      if (record->event.pressed) {
+        if ( is_capital ) {
+            unicode_input_start(); register_hex(0x00c7); unicode_input_finish();
+        } else {
+            unicode_input_start(); register_hex(0x00e7); unicode_input_finish();
+        }
+      }
+      return false; break;
+    // Keys to change unicode mode
+    case UNI_LI:
+      if( record->event.pressed ) {
+          set_unicode_input_mode(UC_LNX);
+      }
+      return false; break;
+    case UNI_WN:
+      if( record->event.pressed ) {
+          set_unicode_input_mode(UC_WIN);
+      }
+      return false; break;
+  }
+  return true;
+}
+
+// Tap dance feature for the altgr implementation
+void altgr_dvo_tap (qk_tap_dance_state_t *state, void *user_data) {
+  if (state->count == 1) {
+    register_code (KC_RALT);
+  } else if (state->count == 2) {
+    unregister_code (KC_RALT);
+    layer_on(_TD);
+  } else if (state->count == 3) {
+      layer_off(_TD);
+  }
+}
+void altgr_dvo_end (qk_tap_dance_state_t *state, void *user_data) {
+  if (state->count == 1) {
+      unregister_code (KC_RALT);
+  } else if (state->count == 2) {
+      layer_off(_TD);
+  }
+}
+
+// Shift vs capslock function
+void caps_tap (qk_tap_dance_state_t *state, void *user_data) {
+    if (state->count == 1) {
+        register_code (KC_LSFT);
+    } else if (state->count == 2) {
+        unregister_code (KC_LSFT);
+        register_code (KC_CAPS);
+    }
+}
+void caps_tap_end (qk_tap_dance_state_t *state, void *user_data) {
+    if (state->count == 1) {
+        unregister_code (KC_LSFT);
+    } else {
+        unregister_code (KC_CAPS);
+    }
+}
+
+// Parantheses
+void paranthesis_dance (qk_tap_dance_state_t *state, void *user_data) {
+    if (state->count == 1) {
+        SEND_STRING("()"); register_code(KC_LEFT); unregister_code(KC_LEFT);
+        } else if (state->count == 2) {
+            SEND_STRING("(");
+        } else if (state->count == 3) {
+            SEND_STRING(")");
+    }
+}
+void curly_dance (qk_tap_dance_state_t *state, void *user_data) {
+    if (state->count == 1) {
+        SEND_STRING("{}"); register_code(KC_LEFT); unregister_code(KC_LEFT);
+        } else if (state->count == 2) {
+            SEND_STRING("{");
+        } else if (state->count == 3) {
+            SEND_STRING("}");
+    }
+}
+
+void square_dance (qk_tap_dance_state_t *state, void *user_data) {
+    if (state->count == 1) {
+        SEND_STRING("[]"); register_code(KC_LEFT); unregister_code(KC_LEFT);
+        } else if (state->count == 2) {
+            SEND_STRING("[");
+        } else if (state->count == 3) {
+            SEND_STRING("]");
+    }
+}
+
+void angular_dance (qk_tap_dance_state_t *state, void *user_data) {
+    if (state->count == 1) {
+        SEND_STRING("<>"); register_code(KC_LEFT); unregister_code(KC_LEFT);
+        } else if (state->count == 2) {
+            SEND_STRING("<");
+        } else if (state->count == 3) {
+            SEND_STRING(">");
+    }
+}
+
+// Copy or cut feature
+void copy_cut (qk_tap_dance_state_t *state, void *user_data) {
+    if (state->count == 1) {
+        register_code (KC_LCTL);
+        register_code (KC_C);
+        unregister_code (KC_C);
+        unregister_code (KC_LCTL);
+    } else if (state->count == 2) {
+        register_code (KC_LCTL);
+        register_code (KC_X);
+        unregister_code (KC_X);
+        unregister_code (KC_LCTL);
+    }
+}
+
+// Tap dance feature
+qk_tap_dance_action_t tap_dance_actions[] = {
+    // Tap once for Left Ctrl, second one is momentory switch to layer TUR
+     [ATD] = ACTION_TAP_DANCE_FN_ADVANCED( altgr_dvo_tap, NULL, altgr_dvo_end )
+    // Advanced tap dance feature allows for immediate response to shift
+    ,[CLS] = ACTION_TAP_DANCE_FN_ADVANCED( caps_tap, NULL, caps_tap_end )
+    // Shifting for double quote and semicolon
+    ,[SCL] = ACTION_TAP_DANCE_DOUBLE( KC_SCLN, KC_COLN )
+    ,[QUO] = ACTION_TAP_DANCE_DOUBLE( KC_QUOT, KC_DQUO )
+    // Tap dances for paranthesis, which sends macros
+    ,[PAR] = ACTION_TAP_DANCE_FN_ADVANCED( NULL, NULL, paranthesis_dance )
+    ,[CUR] = ACTION_TAP_DANCE_FN_ADVANCED( NULL, NULL, curly_dance )
+    ,[SQU] = ACTION_TAP_DANCE_FN_ADVANCED( NULL, NULL, square_dance )
+    ,[ANG] = ACTION_TAP_DANCE_FN_ADVANCED( NULL, NULL, angular_dance )
+    // Tap dance for copy/cutting
+    ,[CPC] = ACTION_TAP_DANCE_FN( copy_cut )
+};

keyboards/planck/keymaps/bbaserdem/rules.mk

@@ -0,0 +1,23 @@
+# Build options
+
+# ENABLE
+TAP_DANCE_ENABLE = yes
+UNICODE_ENABLE = yes
+MOUSEKEY_ENABLE = yes
+EXTRAKEY_ENABLE = yes
+NKRO_ENABLE = yes
+BACKLIGHT_ENABLE = yes
+AUDIO_ENABLE = yes
+
+# DISABLE
+BOOTMAGIC_ENABLE = no
+MIDI_ENABLE = no
+
+# Not for planck
+RGBLIGHT_ENABLE = no #Clashes with audio
+BLUETOOTH_ENABLE = no #No bluetooth
+SLEEP_LED_ENABLE = no #Uses BACKLIGHT_ENABLE rimer
+
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif

keyboards/planck/keymaps/mitch/config.h

@@ -1,2 +1,6 @@
 #include "../../config.h"
 #define PREVENT_STUCK_MODIFIERS
+
+// for the broken board
+#undef MATRIX_COL_PINS
+#define MATRIX_COL_PINS { F1, F0, B0, B2, F4, F5, F6, F7, D4, D6, B4, D7 }

keyboards/viterbi/config.h

@@ -0,0 +1,27 @@
+/*
+Copyright 2017 Danny Nguyen <[email protected]>
+
+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"
+
+#ifdef SUBPROJECT_rev1
+    #include "rev1/config.h"
+#endif
+
+#endif  // CONFIG_H

keyboards/viterbi/i2c.c

@@ -0,0 +1,162 @@
+#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"
+
+#ifdef USE_I2C
+
+// 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;
+}
+
+// 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;
+        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

keyboards/viterbi/i2c.h

@@ -0,0 +1,49 @@
+#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
+
+#define SLAVE_BUFFER_SIZE 0x10
+
+// i2c SCL clock frequency
+#define SCL_CLOCK  100000L
+
+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_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

keyboards/viterbi/keymaps/default/config.h

@@ -0,0 +1,41 @@
+/*
+Copyright 2017 Danny Nguyen <[email protected]>
+
+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"
+
+/* Use I2C or Serial, not both */
+
+#define USE_SERIAL
+// #define USE_I2C
+
+/* Select hand configuration */
+
+#define MASTER_LEFT
+// #define _MASTER_RIGHT
+// #define EE_HANDS
+
+#undef RGBLED_NUM
+#define RGBLIGHT_ANIMATIONS
+#define RGBLED_NUM 12
+#define RGBLIGHT_HUE_STEP 8
+#define RGBLIGHT_SAT_STEP 8
+#define RGBLIGHT_VAL_STEP 8
+
+#endif

keyboards/viterbi/keymaps/default/keymap.c

@@ -0,0 +1,232 @@
+#include "viterbi.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 _COLEMAK 1
+#define _DVORAK 2
+#define _LOWER 3
+#define _RAISE 4
+#define _ADJUST 16
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  COLEMAK,
+  DVORAK,
+  LOWER,
+  RAISE,
+  ADJUST,
+};
+
+// Fillers to make layering more clear
+#define _______ KC_TRNS
+#define XXXXXXX KC_NO
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Qwerty
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | Del  |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Esc  |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   ;  |  "   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   /  |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |Adjust| Ctrl | Alt  | GUI  |Lower |Space |Space |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_QWERTY] = KEYMAP( \
+  KC_GRV,  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_BSPC, \
+  KC_TAB,  KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_DEL,  KC_DEL, \
+  KC_ESC,  KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_QUOT, \
+  KC_LSFT, KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT , KC_ENT, \
+  ADJUST,  ADJUST,  KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT, _______ \
+),
+
+/* Colemak
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Tab  |   Q  |   W  |   F  |   P  |   G  |   J  |   L  |   U  |   Y  |   ;  | Del  |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Esc  |   A  |   R  |   S  |   T  |   D  |   H  |   N  |   E  |   I  |   O  |  "   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   Z  |   X  |   C  |   V  |   B  |   K  |   M  |   ,  |   .  |   /  |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |Adjust| Ctrl | Alt  | GUI  |Lower |Space |Space |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_COLEMAK] = KEYMAP( \
+  KC_GRV,  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_TAB,  KC_TAB,  KC_Q,    KC_W,    KC_F,    KC_P,    KC_G,    KC_J,    KC_L,    KC_U,    KC_Y,    KC_SCLN, KC_DEL, _______, \
+  KC_ESC,  KC_ESC,  KC_A,    KC_R,    KC_S,    KC_T,    KC_D,    KC_H,    KC_N,    KC_E,    KC_I,    KC_O,    KC_QUOT, _______, \
+  KC_LSFT, KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_K,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT , _______, \
+  ADJUST,  ADJUST,  KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT, _______ \
+),
+
+/* Dvorak
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Tab  |   "  |   ,  |   .  |   P  |   Y  |   F  |   G  |   C  |   R  |   L  | Del  |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Esc  |   A  |   O  |   E  |   U  |   I  |   D  |   H  |   T  |   N  |   S  |  /   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   ;  |   Q  |   J  |   K  |   X  |   B  |   M  |   W  |   V  |   Z  |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |Adjust| Ctrl | Alt  | GUI  |Lower |Space |Space |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_DVORAK] = KEYMAP( \
+  KC_GRV,  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_TAB,  KC_TAB,  KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,    KC_F,    KC_G,    KC_C,    KC_R,    KC_L,    KC_DEL, _______, \
+  KC_ESC,  KC_ESC,  KC_A,    KC_O,    KC_E,    KC_U,    KC_I,    KC_D,    KC_H,    KC_T,    KC_N,    KC_S,    KC_SLSH, _______, \
+  KC_LSFT, KC_LSFT, KC_SCLN, KC_Q,    KC_J,    KC_K,    KC_X,    KC_B,    KC_M,    KC_W,    KC_V,    KC_Z,    KC_ENT , _______, \
+  ADJUST,  ADJUST,  KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT, _______ \
+),
+
+/* Lower
+ * ,-----------------------------------------------------------------------------------.
+ * |   ~  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |   ~  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  | Del  |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   _  |   +  |     |    \  |  |   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |ISO ~ |ISO | |      |      |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_LOWER] = KEYMAP( \
+  _______, 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_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_DEL, _______, \
+  _______, 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 |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Del  |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   -  |   =  |   [  |   ]  |  \   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |ISO # |ISO / |      |      |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_RAISE] = KEYMAP( \
+  _______, 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_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL, _______, \
+  _______, 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)
+ * ,-----------------------------------------------------------------------------------.
+ * |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      | Reset|RGB Tg|RGB Md|Hue Up|Hue Dn|Sat Up|Sat Dn|Val Up|Val Dn|      |  Del |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |Aud on|Audoff|AGnorm|AGswap|Qwerty|Colemk|Dvorak|      |      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      |      |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_ADJUST] =  KEYMAP( \
+  _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12, _______, \
+  _______, _______, RESET  , RGB_TOG, RGB_MOD, RGB_HUD, RGB_HUI, RGB_SAD, RGB_SAI, RGB_VAD, RGB_VAI, _______, KC_DEL, _______, \
+  _______, _______, _______, _______, AU_ON,   AU_OFF,  AG_NORM, AG_SWAP, QWERTY,  COLEMAK, DVORAK,  _______, _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______ \
+)
+
+
+};
+
+#ifdef AUDIO_ENABLE
+float tone_qwerty[][2]     = SONG(QWERTY_SOUND);
+float tone_dvorak[][2]     = SONG(DVORAK_SOUND);
+float tone_colemak[][2]    = SONG(COLEMAK_SOUND);
+#endif
+
+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_NOTE_ARRAY(tone_qwerty, false, 0);
+        #endif
+        persistent_default_layer_set(1UL<<_QWERTY);
+      }
+      return false;
+      break;
+    case COLEMAK:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_colemak, false, 0);
+        #endif
+        persistent_default_layer_set(1UL<<_COLEMAK);
+      }
+      return false;
+      break;
+    case DVORAK:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_dvorak, false, 0);
+        #endif
+        persistent_default_layer_set(1UL<<_DVORAK);
+      }
+      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;
+}

keyboards/viterbi/keymaps/default/rules.mk

@@ -0,0 +1,5 @@
+RGBLIGHT_ENABLE = yes
+
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif

keyboards/viterbi/keymaps/dwallace/config.h

@@ -0,0 +1,43 @@
+/*
+Copyright 2017 Danny Nguyen <[email protected]>
+
+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"
+
+/* Use I2C or Serial, not both */
+
+#define USE_SERIAL
+// #define USE_I2C
+
+/* Select hand configuration */
+
+#define MASTER_LEFT
+// #define _MASTER_RIGHT
+// #define EE_HANDS
+
+#define TAPPING_TERM 150
+
+#undef RGBLED_NUM
+#define RGBLIGHT_ANIMATIONS
+#define RGBLED_NUM 14
+#define RGBLIGHT_HUE_STEP 8
+#define RGBLIGHT_SAT_STEP 8
+#define RGBLIGHT_VAL_STEP 8
+
+#endif

keyboards/viterbi/keymaps/dwallace/keymap.c

@@ -0,0 +1,85 @@
+#include "viterbi.h"
+#include "action_layer.h"
+#include "eeconfig.h"
+
+extern keymap_config_t keymap_config;
+
+#define _QWERTY 0
+#define _FN 1
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  FN,
+};
+
+#define KC_ KC_TRNS
+#define _______ KC_TRNS
+
+#define KC_SWIN LGUI(KC_TILD)   // Switch between windows
+#define KC_SAPP LGUI(KC_TAB)    // Switch between applications
+#define KC_FN1 MO(_FN)
+#define KC_LCAG LCAG(KC_NO)
+#define KC_RTOG RGB_TOG
+#define KC_RMOD RGB_MOD
+#define KC_RVAD RGB_VAD
+#define KC_RVAI RGB_VAI
+#define KC_CLRM KC_NO           // TODO: Clear sticky modifiers
+#define KC_RST RESET
+
+// TODO: Make modifiers sticky
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+  [_QWERTY] = KC_KEYMAP(
+  //,----+----+----+----+----+----+----.    ,----+----+----+----+----+----+----.
+     GRV , 1  , 2  , 3  , 4  , 5  , 6  ,      7  , 8  , 9  , 0  ,MINS,EQL ,BSPC,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+     TAB , Q  , W  , E  , R  , T  ,LBRC,      Y  , U  , I  , O  , P  ,BSLS,PGUP,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+     ESC , A  , S  , D  , F  , G  ,RBRC,      H  , J  , K  , L  ,SCLN,QUOT,ENT ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+     LSFT, Z  , X  , C  , V  , B  ,SWIN,      N  , M  ,COMM,DOT , UP ,SLSH,RSFT,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+     LCTL,LCAG,LALT,LGUI,SPC ,CLRM,SAPP,     FN1 ,SPC ,RGUI,LEFT,DOWN,RGHT,PGDN
+  //`----+----+----+----+----+----+----'    `----+----+----+----+----+----+----'
+  ),
+
+  [_FN] = KC_KEYMAP(
+  //,----+----+----+----+----+----+----.    ,----+----+----+----+----+----+----.
+         , F1 , F2 , F3 , F4 , F5 , F6 ,      F7 , F8 , F9 ,F10 ,F11 ,F12 ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+         ,    ,    ,    ,RST ,    ,    ,         ,    ,    ,    ,    ,    ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,    ,     RTOG,RMOD,RVAD,RVAI,    ,    ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,    ,         ,MUTE,VOLD,VOLU,    ,    ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    ,    
+  //`----+----+----+----+----+----+----'    `----+----+----+----+----+----+----'
+  )
+
+};
+
+#ifdef AUDIO_ENABLE
+float tone_qwerty[][2]     = SONG(QWERTY_SOUND);
+#endif
+
+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_NOTE_ARRAY(tone_qwerty, false, 0);
+        #endif
+        persistent_default_layer_set(1UL<<_QWERTY);
+      }
+      return false;
+      break;
+  }
+  return true;
+}

keyboards/viterbi/keymaps/dwallace/rules.mk

@@ -0,0 +1,5 @@
+RGBLIGHT_ENABLE = yes
+
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif

keyboards/viterbi/keymaps/hexwire/README.md

@@ -0,0 +1,116 @@
+Hexwire's Nyquist Layout
+============================
+
+### Changes from default layout
+
+- Main layer
+    - The right space bar key has been changed to backspace, as I only hit space with my left thumb
+    - Backtick is at the lower right and also serves goes to the 3rd function layer when held
+    - Enter key acts as shift when held
+    - Escape key acts as control when held
+    - Minus key at upper right
+- Lower layer
+    - Numbers are on the lower layer, to make it easier to use a numpad on the right hand
+    - Arrow keys
+    - Straight and curly brackets in the middle two columns
+    - Screenshot keys for MacOS
+- Upper layer
+    - Symbols are on the upper layer
+    - Media keys
+    - Page Up/Down, Home/End
+- 3rd function layer
+    - Function keys
+
+## Layouts
+
+### QWERTY
+
+```
+,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+|ESC , 1  , 2  , 3  , 4  , 5  ,      6  , 7  , 8  , 9  , 0  ,BSPC|
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|TAB , Q  , W  , E  , R  , T  ,      Y  , U  , I  , O  , P  ,MINS|
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+| X0 , A  , S  , D  , F  , G  ,      H  , J  , K  , L  ,SCLN,QUOT|
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|LSFT, Z  , X  , C  , V  , B  ,      N  , M  ,COMM,DOT ,SLSH, X4 |
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+| X3 ,LCTL,LALT,LGUI, X1 ,SPC ,     BSPC, X2 ,LEFT,DOWN, UP ,RGHT|
+`----+----+----+----+----+----'    `----+----+----+----+----+----'
+```
+
+### Colemak
+```
+,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+|ESC , 1  , 2  , 3  , 4  , 5  ,      6  , 7  , 8  , 9  , 0  ,BSPC|
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|TAB , Q  , W  , F  , P  , G  ,      J  , L  , U  , Y  ,SCLN,MINS|
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+| X0 , A  , R  , S  , T  , D  ,      H  , N  , E  , I  , O  ,QUOT|
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|LSFT, Z  , X  , C  , V  , B  ,      K  , M  ,COMM,DOT ,SLSH, X4 |
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+| X3 ,LCTL,LALT,LGUI, X1 ,SPC ,     BSPC, X2 ,LEFT,DOWN, UP ,RGHT|
+`----+----+----+----+----+----'    `----+----+----+----+----+----'
+```
+
+### Dvorak
+```
+,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+|ESC , 1  , 2  , 3  , 4  , 5  ,      6  , 7  , 8  , 9  , 0  ,BSPC|
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|TAB ,QUOT,COMM,DOT , P  , Y  ,      F  , G  , C  , R  , L  ,MINS|
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+| X0 , A  , O  , E  , U  , I  ,      D  , H  , T  , N  , S  ,SLSH|
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|LSFT,SCLN, Q  , J  , K  , X  ,      B  , M  , W  , V  , Z  , X4 |
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+| X3 ,LCTL,LALT,LGUI, X1 ,SPC ,     BSPC, X2 ,LEFT,DOWN, UP ,RGHT|
+`----+----+----+----+----+----'    `----+----+----+----+----+----'
+```
+
+### Lower
+```
+,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+|TILD,EXLM, AT ,HASH,DLR ,PERC,     CIRC,AMPR,ASTR,LPRN,RPRN,BSPC|
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|    , 1  , 2  , 3  , 4  , 5  ,      6  , 7  , 8  , 9  , 0  ,    |
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|DEL ,CAPP,LEFT,RGHT, UP ,LBRC,     RBRC, P4 , P5 , P6 ,PLUS,PIPE|
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|    ,CPYP,    ,    ,DOWN,LCBR,     RCBR, P1 , P2 , P3 ,MINS,    |
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|    ,    ,    ,    ,    ,    ,     DEL ,    , P0 ,PDOT,    ,   |
+`----+----+----+----+----+----'    `----+----+----+----+----+----'
+```
+
+### Raise
+```
+,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+|TILD,EXLM, AT ,HASH,DLR ,PERC,     CIRC,AMPR,ASTR,LPRN,RPRN,BSPC|
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|    ,EXLM, AT ,HASH,DLR ,PERC,     CIRC,AMPR,ASTR,LPRN,RPRN,    |
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|DEL ,MPRV,MNXT,VOLU,PGUP,UNDS,     EQL ,HOME,    ,    ,    ,BSLS|
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|MUTE,MSTP,MPLY,VOLD,PGDN,MINS,     PLUS,END ,    ,    ,    ,    |
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|    ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    |
+`----+----+----+----+----+----'    `----+----+----+----+----+----'
+```
+
+### 3rd function layer
+
+```
+,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+|F12 , F1 , F2 , F3 , F4 , F5 ,      F6 , F7 , F8 , F9 ,F10 ,F11 |
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|    ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    |
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|    ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    |
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|    ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    |
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+|    ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    |
+`----+----+----+----+----+----'    `----+----+----+----+----+----'
+```

keyboards/viterbi/keymaps/hexwire/config.h

@@ -0,0 +1,43 @@
+/*
+Copyright 2017 Danny Nguyen <[email protected]>
+
+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"
+
+/* Use I2C or Serial, not both */
+
+#define USE_SERIAL
+// #define USE_I2C
+
+/* Select hand configuration */
+
+#define MASTER_LEFT
+// #define _MASTER_RIGHT
+// #define EE_HANDS
+
+#define TAPPING_TERM 150
+
+#undef RGBLED_NUM
+#define RGBLIGHT_ANIMATIONS
+#define RGBLED_NUM 12
+#define RGBLIGHT_HUE_STEP 8
+#define RGBLIGHT_SAT_STEP 8
+#define RGBLIGHT_VAL_STEP 8
+
+#endif

keyboards/viterbi/keymaps/hexwire/keymap.c

@@ -0,0 +1,218 @@
+#include "viterbi.h"
+#include "action_layer.h"
+#include "eeconfig.h"
+
+extern keymap_config_t keymap_config;
+
+#define _QWERTY 0
+#define _COLEMAK 1
+#define _DVORAK 2
+#define _LOWER 3
+#define _RAISE 4
+#define _FN3 5
+#define _FN4 6
+#define _ADJUST 16
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  COLEMAK,
+  DVORAK,
+  LOWER,
+  RAISE,
+  FN3,
+  FN4,
+  ADJUST,
+};
+
+#define KC_ KC_TRNS
+#define _______ KC_TRNS
+
+#define KC_CAPW LGUI(LSFT(KC_3))        // Capture whole screen
+#define KC_CPYW LGUI(LSFT(LCTL(KC_3)))  // Copy whole screen
+#define KC_CAPP LGUI(LSFT(KC_4))        // Capture portion of screen
+#define KC_CPYP LGUI(LSFT(LCTL(KC_4)))  // Copy portion of screen
+#define KC_X0 MT(MOD_LCTL, KC_ESC)
+#define KC_X1 LOWER
+#define KC_X2 RAISE
+#define KC_X3 LT(_FN3, KC_GRV)
+#define KC_X4 MT(MOD_LSFT, KC_ENT)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+  [_QWERTY] = KC_KEYMAP(
+  //,----+----+----+----+----+----+----.    ,----+----+----+----+----+----+----.
+     ESC , 1  , 2  , 3  , 4  , 5  ,    ,      6  , 7  , 8  , 9  , 0  ,BSPC,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+     TAB , Q  , W  , E  , R  , T  ,    ,      Y  , U  , I  , O  , P  ,MINS,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+      X0 , A  , S  , D  , F  , G  ,    ,      H  , J  , K  , L  ,SCLN,QUOT,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+     LSFT, Z  , X  , C  , V  , B  ,    ,      N  , M  ,COMM,DOT ,SLSH, X4 ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+      X3 ,LCTL,LALT,LGUI, X1 ,SPC ,    ,     BSPC, X2 ,LEFT,DOWN, UP ,RGHT,    
+  //`----+----+----+----+----+----+----'    `----+----+----+----+----+----+----'
+  ),
+
+  [_COLEMAK] = KC_KEYMAP(
+  //,----+----+----+----+----+----+----.    ,----+----+----+----+----+----+----.
+     ESC , 1  , 2  , 3  , 4  , 5  ,    ,      6  , 7  , 8  , 9  , 0  ,BSPC,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+     TAB , Q  , W  , F  , P  , G  ,    ,      J  , L  , U  , Y  ,SCLN,MINS,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+      X0 , A  , R  , S  , T  , D  ,    ,      H  , N  , E  , I  , O  ,QUOT,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+     LSFT, Z  , X  , C  , V  , B  ,    ,      K  , M  ,COMM,DOT ,SLSH, X4 ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+      X3 ,LCTL,LALT,LGUI, X1 ,SPC ,    ,     BSPC, X2 ,LEFT,DOWN, UP ,RGHT,    
+  //`----+----+----+----+----+----+----'    `----+----+----+----+----+----+----'
+  ),
+
+  [_DVORAK] = KC_KEYMAP(
+  //,----+----+----+----+----+----+----.    ,----+----+----+----+----+----+----.
+     ESC , 1  , 2  , 3  , 4  , 5  ,    ,      6  , 7  , 8  , 9  , 0  ,BSPC,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+     TAB ,QUOT,COMM,DOT , P  , Y  ,    ,      F  , G  , C  , R  , L  ,MINS,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+      X0 , A  , O  , E  , U  , I  ,    ,      D  , H  , T  , N  , S  ,SLSH,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+     LSFT,SCLN, Q  , J  , K  , X  ,    ,      B  , M  , W  , V  , Z  , X4 ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+      X3 ,LCTL,LALT,LGUI, X1 ,SPC ,    ,     BSPC, X2 ,LEFT,DOWN, UP ,RGHT,    
+  //`----+----+----+----+----+----+----'    `----+----+----+----+----+----+----'
+  ),
+
+  [_LOWER] = KC_KEYMAP(
+  //,----+----+----+----+----+----+----.    ,----+----+----+----+----+----+----.
+     TILD,EXLM, AT ,HASH,DLR ,PERC,    ,     CIRC,AMPR,ASTR,LPRN,RPRN,BSPC,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+         , 1  , 2  , 3  , 4  , 5  ,    ,      6  , 7  , 8  , 9  , 0  ,    ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+     DEL ,CAPP,LEFT,RGHT, UP ,LBRC,    ,     RBRC, P4 , P5 , P6 ,PLUS,PIPE,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+         ,CPYP,    ,    ,DOWN,LCBR,    ,     RCBR, P1 , P2 , P3 ,MINS,    ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,    ,     DEL ,    , P0 ,PDOT,    ,    ,    
+  //`----+----+----+----+----+----+----'    `----+----+----+----+----+----+----'
+  ),
+
+  [_RAISE] = KC_KEYMAP(
+  //,----+----+----+----+----+----+----.    ,----+----+----+----+----+----+----.
+     TILD,EXLM, AT ,HASH,DLR ,PERC,    ,     CIRC,AMPR,ASTR,LPRN,RPRN,BSPC,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+         ,EXLM, AT ,HASH,DLR ,PERC,    ,     CIRC,AMPR,ASTR,LPRN,RPRN,    ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+     DEL ,MPRV,MNXT,VOLU,PGUP,UNDS,    ,     EQL ,HOME,    ,    ,    ,BSLS,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+     MUTE,MSTP,MPLY,VOLD,PGDN,MINS,    ,     PLUS,END ,    ,    ,    ,    ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    ,    
+  //`----+----+----+----+----+----+----'    `----+----+----+----+----+----+----'
+  ),
+
+  [_FN3] = KC_KEYMAP(
+  //,----+----+----+----+----+----+----.    ,----+----+----+----+----+----+----.
+     F12 , F1 , F2 , F3 , F4 , F5 ,    ,      F6 , F7 , F8 , F9 ,F10 ,F11 ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    ,    ,
+  //|----+----+----+----+----+----+----|    |----+----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    ,    
+  //`----+----+----+----+----+----+----'    `----+----+----+----+----+----+----'
+  ),
+
+/* Adjust (Lower + Raise)
+ * ,-----------------------------------------------------------------------------------.
+ * |      | Reset|RGB Tg|RGB Md|Hue Up|Hue Dn|Sat Up|Sat Dn|Val Up|Val Dn|      |      |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |Aud on|Audoff|AGnorm|AGswap|Qwerty|Colemk|Dvorak|      |      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      |      |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+  [_ADJUST] = KEYMAP( \
+    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+    _______, RESET  , RGB_TOG, RGB_MOD, RGB_HUD, RGB_HUI, RGB_SAD, RGB_SAI, RGB_VAD, RGB_VAI, _______, _______, _______, _______, \
+    _______, _______, _______, AU_ON,   AU_OFF,  AG_NORM, AG_SWAP, QWERTY,  COLEMAK, DVORAK,  _______, _______, _______, _______, \
+    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______ \
+  )
+
+
+};
+
+#ifdef AUDIO_ENABLE
+float tone_qwerty[][2]     = SONG(QWERTY_SOUND);
+float tone_dvorak[][2]     = SONG(DVORAK_SOUND);
+float tone_colemak[][2]    = SONG(COLEMAK_SOUND);
+#endif
+
+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_NOTE_ARRAY(tone_qwerty, false, 0);
+        #endif
+        persistent_default_layer_set(1UL<<_QWERTY);
+      }
+      return false;
+      break;
+    case COLEMAK:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_colemak, false, 0);
+        #endif
+        persistent_default_layer_set(1UL<<_COLEMAK);
+      }
+      return false;
+      break;
+    case DVORAK:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_dvorak, false, 0);
+        #endif
+        persistent_default_layer_set(1UL<<_DVORAK);
+      }
+      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;
+}

keyboards/viterbi/keymaps/hexwire/rules.mk

@@ -0,0 +1,5 @@
+RGBLIGHT_ENABLE = yes
+
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif

keyboards/viterbi/matrix.c

@@ -0,0 +1,464 @@
+/*
+Copyright 2017 Danny Nguyen <[email protected]>
+
+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"
+
+#ifdef USE_I2C
+#  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_quantum(void) {
+    matrix_init_kb();
+}
+
+__attribute__ ((weak))
+void matrix_scan_quantum(void) {
+    matrix_scan_kb();
+}
+
+__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) {
+}
+
+inline
+uint8_t matrix_rows(void)
+{
+    return MATRIX_ROWS;
+}
+
+inline
+uint8_t matrix_cols(void)
+{
+    return MATRIX_COLS;
+}
+
+void matrix_init(void)
+{
+    debug_enable = true;
+    debug_matrix = true;
+    debug_mouse = true;
+    // initialize row and col
+    unselect_rows();
+    init_cols();
+
+    TX_RX_LED_INIT;
+
+    // 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();
+                PORTD ^= (1 << 2);
+            }
+
+#       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;
+}
+
+#ifdef USE_I2C
+
+// Get rows from other half over i2c
+int i2c_transaction(void) {
+    int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
+
+    int err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
+    if (err) goto i2c_error;
+
+    // start of matrix stored at 0x00
+    err = i2c_master_write(0x00);
+    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;
+    }
+
+    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();
+
+#ifdef USE_I2C
+    if( i2c_transaction() ) {
+#else // USE_SERIAL
+    if( serial_transaction() ) {
+#endif
+        // turn on the indicator led when halves are disconnected
+        TXLED1;
+
+        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 {
+        // turn off the indicator led on no error
+        TXLED0;
+        error_count = 0;
+    }
+    matrix_scan_quantum();
+    return ret;
+}
+
+void matrix_slave_scan(void) {
+    _matrix_scan();
+
+    int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
+
+#ifdef USE_I2C
+    for (int i = 0; i < ROWS_PER_HAND; ++i) {
+        i2c_slave_buffer[i] = matrix[offset+i];
+    }
+#else // USE_SERIAL
+    for (int i = 0; i < ROWS_PER_HAND; ++i) {
+        serial_slave_buffer[i] = matrix[offset+i];
+    }
+#endif
+}
+
+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

keyboards/viterbi/readme.md

@@ -0,0 +1,21 @@
+Viterbi
+=======
+
+A split 5x14 ortholinear keyboard kit made and sold by Keebio. [More info at Keebio](https://keeb.io)
+
+Keyboard Maintainer: [Bakingpy](https://github.com/nooges)  
+Hardware Supported: Pro Micro  
+Hardware Availability: [Keebio](https://keeb.io)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make viterbi-rev1-default
+
+
+Example of flashing this keyboard:
+
+    make viterbi-rev1-default-avrdude
+
+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.
+
+A build guide for this keyboard can be found here: [Viterbi Build Guide](https://docs.keeb.io)

keyboards/viterbi/rev1/Makefile

@@ -0,0 +1,3 @@
+ifndef MAKEFILE_INCLUDED
+	include ../../Makefile
+endif

keyboards/viterbi/rev1/config.h

@@ -0,0 +1,89 @@
+/*
+Copyright 2017 Danny Nguyen <[email protected]>
+
+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 REV1_CONFIG_H
+#define REV1_CONFIG_H
+
+#include "../config.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xCEEB
+#define PRODUCT_ID      0x1157
+#define DEVICE_VER      0x0100
+#define MANUFACTURER    Keebio
+#define PRODUCT         The Viterbi Keyboard
+#define DESCRIPTION     Split 5x14 ortholinear keyboard
+
+/* key matrix size */
+// Rows are doubled-up
+#define MATRIX_ROWS 10
+#define MATRIX_COLS 7
+
+// wiring of each half
+#define MATRIX_ROW_PINS { D4, D7, E6, B4, B5 }
+#define MATRIX_COL_PINS { F5, F6, F7, B1, B3, B2, B6 }
+
+#define CATERINA_BOOTLOADER
+
+/* COL2ROW or ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+
+/* define if matrix has ghost */
+//#define MATRIX_HAS_GHOST
+
+/* number of backlight levels */
+// #define BACKLIGHT_LEVELS 3
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCING_DELAY 5
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/* key combination for command */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+/* ws2812 RGB LED */
+#define RGB_DI_PIN D3
+#define RGBLIGHT_TIMER
+#define RGBLED_NUM 16    // Number of LEDs
+#define ws2812_PORTREG  PORTD
+#define ws2812_DDRREG   DDRD
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+// #define NO_DEBUG
+
+/* disable print */
+// #define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
+
+#endif

keyboards/viterbi/rev1/rev1.c

@@ -0,0 +1,39 @@
+#include "viterbi.h"
+
+#ifdef AUDIO_ENABLE
+    float tone_startup[][2] = SONG(STARTUP_SOUND);
+    float tone_goodbye[][2] = SONG(GOODBYE_SOUND);
+#endif
+
+#ifdef SSD1306OLED
+void led_set_kb(uint8_t usb_led) {
+    // put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
+    led_set_user(usb_led);
+}
+#endif
+
+void matrix_init_kb(void) {
+
+    #ifdef AUDIO_ENABLE
+        _delay_ms(20); // gets rid of tick
+        PLAY_NOTE_ARRAY(tone_startup, false, 0);
+    #endif
+
+    // // green led on
+    // DDRD |= (1<<5);
+    // PORTD &= ~(1<<5);
+
+    // // orange led on
+    // DDRB |= (1<<0);
+    // PORTB &= ~(1<<0);
+
+	matrix_init_user();
+};
+
+void shutdown_user(void) {
+    #ifdef AUDIO_ENABLE
+        PLAY_NOTE_ARRAY(tone_goodbye, false, 0);
+	_delay_ms(150);
+	stop_all_notes();
+    #endif
+}

keyboards/viterbi/rev1/rev1.h

@@ -0,0 +1,66 @@
+#ifndef REV1_H
+#define REV1_H
+
+#include "../viterbi.h"
+
+//void promicro_bootloader_jmp(bool program);
+#include "quantum.h"
+
+
+#ifdef USE_I2C
+#include <stddef.h>
+#ifdef __AVR__
+	#include <avr/io.h>
+	#include <avr/interrupt.h>
+#endif
+#endif
+
+//void promicro_bootloader_jmp(bool program);
+
+#ifndef FLIP_HALF
+// Standard Keymap
+// (TRRS jack on the left half is to the right, TRRS jack on the right half is to the left)
+#define KEYMAP( \
+    L00, L01, L02, L03, L04, L05, L06, R00, R01, R02, R03, R04, R05, R06, \
+    L10, L11, L12, L13, L14, L15, L16, R10, R11, R12, R13, R14, R15, R16, \
+    L20, L21, L22, L23, L24, L25, L26, R20, R21, R22, R23, R24, R25, R26, \
+    L30, L31, L32, L33, L34, L35, L36, R30, R31, R32, R33, R34, R35, R36, \
+    L40, L41, L42, L43, L44, L45, L46, R40, R41, R42, R43, R44, R45, R46 \
+	) \
+	{ \
+		{ L00, L01, L02, L03, L04, L05, L06 }, \
+		{ L10, L11, L12, L13, L14, L15, L16 }, \
+		{ L20, L21, L22, L23, L24, L25, L26 }, \
+		{ L30, L31, L32, L33, L34, L35, L36 }, \
+		{ L40, L41, L42, L43, L44, L45, L46 }, \
+		{ R06, R05, R04, R03, R02, R01, R00 }, \
+		{ R16, R15, R14, R13, R12, R11, R10 }, \
+		{ R26, R25, R24, R23, R22, R21, R20 }, \
+		{ R36, R35, R34, R33, R32, R31, R30 }, \
+		{ R46, R45, R44, R43, R42, R41, R40 } \
+	}
+#else
+// Keymap with right side flipped
+// (TRRS jack on both halves are to the right)
+#define KEYMAP( \
+    L00, L01, L02, L03, L04, L05, L06, R00, R01, R02, R03, R04, R05, R06, \
+    L10, L11, L12, L13, L14, L15, L16, R10, R11, R12, R13, R14, R15, R16, \
+    L20, L21, L22, L23, L24, L25, L26, R20, R21, R22, R23, R24, R25, R26, \
+    L30, L31, L32, L33, L34, L35, L36, R30, R31, R32, R33, R34, R35, R36, \
+    L40, L41, L42, L43, L44, L45, L46, R40, R41, R42, R43, R44, R45, R46 \
+	) \
+	{ \
+		{ L00, L01, L02, L03, L04, L05, L06 }, \
+		{ L10, L11, L12, L13, L14, L15, L16 }, \
+		{ L20, L21, L22, L23, L24, L25, L26 }, \
+		{ L30, L31, L32, L33, L34, L35, L36 }, \
+		{ L40, L41, L42, L43, L44, L45, L46 }, \
+		{ R00, R01, R02, R03, R04, R05, R06 }, \
+		{ R10, R11, R12, R13, R14, R15, R16 }, \
+		{ R20, R21, R22, R23, R24, R25, R26 }, \
+		{ R30, R31, R32, R33, R34, R35, R36 }, \
+		{ R40, R41, R42, R43, R44, R45, R46 } \
+	}
+#endif
+
+#endif

keyboards/viterbi/rev1/rules.mk

@@ -0,0 +1,5 @@
+BACKLIGHT_ENABLE = no
+
+ifndef QUANTUM_DIR
+	include ../../../Makefile
+endif

keyboards/viterbi/rules.mk

@@ -0,0 +1,75 @@
+SRC += matrix.c \
+	   i2c.c \
+	   split_util.c \
+	   serial.c
+
+# 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)
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+
+# Boot Section Size in *bytes*
+#   Teensy halfKay   512
+#   Teensy++ halfKay 1024
+#   Atmel DFU loader 4096
+#   LUFA bootloader  4096
+#   USBaspLoader     2048
+OPT_DEFS += -DBOOTLOADER_SIZE=4096
+
+# 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 = yes       # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = no         # Console for debug(+400)
+COMMAND_ENABLE = yes        # Commands for debug and configuration
+NKRO_ENABLE = no            # 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.  Do not enable this with audio at the same time.
+SUBPROJECT_rev1 = yes
+USE_I2C = 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
+
+CUSTOM_MATRIX = yes

keyboards/viterbi/serial.c

@@ -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"
+
+#ifdef USE_SERIAL
+
+// 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

keyboards/viterbi/serial.h

@@ -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

keyboards/viterbi/split_rgb.c

@@ -0,0 +1,41 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include "split_util.h"
+#include "progmem.h"
+#include "print.h"
+#include "rgblight.h"
+
+#ifdef USE_I2C
+#  include "i2c.h"
+#else // USE_SERIAL
+#  include "serial.h"
+#endif
+
+
+rgblight_config_t rgblight_config;
+
+void rgblight_slave_update(void) {
+  //rgblight_effect_christmas();
+}
+
+
+void rgblight_set(void) {
+  if (rgblight_config.enable) {
+    #ifdef RGBW
+      ws2812_setleds_rgbw(led, RGBLED_NUM);
+    #else
+      ws2812_setleds(led, RGBLED_NUM);
+    #endif
+  } else {
+    for (uint8_t i = 0; i < RGBLED_NUM; i++) {
+      led[i].r = 0;
+      led[i].g = 0;
+      led[i].b = 0;
+    }
+    #ifdef RGBW
+      ws2812_setleds_rgbw(led, RGBLED_NUM);
+    #else
+      ws2812_setleds(led, RGBLED_NUM);
+    #endif
+  }
+}

keyboards/viterbi/split_rgb.h

@@ -0,0 +1,6 @@
+#ifndef SPLIT_RGB_H
+#define SPLIT_RGB_H
+
+void rgblight_slave_update(void);
+
+#endif

keyboards/viterbi/split_util.c

@@ -0,0 +1,86 @@
+#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"
+
+#ifdef USE_I2C
+#  include "i2c.h"
+#else
+#  include "serial.h"
+#endif
+
+volatile bool isLeftHand = true;
+
+static void setup_handedness(void) {
+  #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
+}
+
+static void keyboard_master_setup(void) {
+#ifdef USE_I2C
+    i2c_master_init();
+#ifdef SSD1306OLED
+    matrix_master_OLED_init ();
+#endif
+#else
+    serial_master_init();
+#endif
+}
+
+static void keyboard_slave_setup(void) {
+  timer_init();
+#ifdef USE_I2C
+    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();
+
+   while (1) {
+      matrix_slave_scan();
+   }
+}
+
+// this code runs before the usb and keyboard is initialized
+void matrix_setup(void) {
+    split_keyboard_setup();
+
+    if (!has_usb()) {
+        keyboard_slave_loop();
+    }
+}

keyboards/viterbi/split_util.h

@@ -0,0 +1,24 @@
+#ifndef SPLIT_KEYBOARD_UTIL_H
+#define SPLIT_KEYBOARD_UTIL_H
+
+#include <stdbool.h>
+
+#ifdef EE_HANDS
+	#define EECONFIG_BOOTMAGIC_END      (uint8_t *)10
+	#define EECONFIG_HANDEDNESS         EECONFIG_BOOTMAGIC_END
+#endif
+
+#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

keyboards/viterbi/viterbi.c

@@ -0,0 +1 @@
+#include "viterbi.h"

keyboards/viterbi/viterbi.h

@@ -0,0 +1,26 @@
+#ifndef VITERBI_H
+#define VITERBI_H
+
+#ifdef SUBPROJECT_rev1
+    #include "rev1.h"
+#endif
+
+// Used to create a keymap using only KC_ prefixed keys
+#define KC_KEYMAP( \
+    L00, L01, L02, L03, L04, L05, L06, R00, R01, R02, R03, R04, R05, R06, \
+    L10, L11, L12, L13, L14, L15, L16, R10, R11, R12, R13, R14, R15, R16, \
+    L20, L21, L22, L23, L24, L25, L26, R20, R21, R22, R23, R24, R25, R26, \
+    L30, L31, L32, L33, L34, L35, L36, R30, R31, R32, R33, R34, R35, R36, \
+    L40, L41, L42, L43, L44, L45, L46, R40, R41, R42, R43, R44, R45, R46 \
+    ) \
+    KEYMAP( \
+        KC_##L00, KC_##L01, KC_##L02, KC_##L03, KC_##L04, KC_##L05, KC_##L06, KC_##R00, KC_##R01, KC_##R02, KC_##R03, KC_##R04, KC_##R05, KC_##R06, \
+        KC_##L10, KC_##L11, KC_##L12, KC_##L13, KC_##L14, KC_##L15, KC_##L16, KC_##R10, KC_##R11, KC_##R12, KC_##R13, KC_##R14, KC_##R15, KC_##R16, \
+        KC_##L20, KC_##L21, KC_##L22, KC_##L23, KC_##L24, KC_##L25, KC_##L26, KC_##R20, KC_##R21, KC_##R22, KC_##R23, KC_##R24, KC_##R25, KC_##R26, \
+        KC_##L30, KC_##L31, KC_##L32, KC_##L33, KC_##L34, KC_##L35, KC_##L36, KC_##R30, KC_##R31, KC_##R32, KC_##R33, KC_##R34, KC_##R35, KC_##R36, \
+        KC_##L40, KC_##L41, KC_##L42, KC_##L43, KC_##L44, KC_##L45, KC_##L46, KC_##R40, KC_##R41, KC_##R42, KC_##R43, KC_##R44, KC_##R45, KC_##R46 \
+    )
+
+#include "quantum.h"
+
+#endif

shell.nix

@@ -0,0 +1,26 @@
+{ pkgs ? import <nixpkgs> {}
+, avr ? true, arm ? true }:
+
+with pkgs;
+let
+  avr_incflags = [
+    "-isystem ${avrlibc}/avr/include"
+    "-B${avrlibc}/avr/lib/avr5"
+    "-L${avrlibc}/avr/lib/avr5"
+    "-B${avrlibc}/avr/lib/avr35"
+    "-L${avrlibc}/avr/lib/avr35"
+    "-B${avrlibc}/avr/lib/avr51"
+    "-L${avrlibc}/avr/lib/avr51"
+  ];
+in
+
+stdenv.mkDerivation {
+  name = "qmk-firmware";
+
+  buildInputs = [ dfu-programmer dfu-util diffutils git ]
+    ++ lib.optional avr [ avrbinutils avrgcc avrlibc ]
+    ++ lib.optional arm [ gcc-arm-embedded ];
+
+  CFLAGS = lib.optional avr avr_incflags;
+  ASFLAGS = lib.optional avr avr_incflags;
+}