make a5 high when not in use

* Enable RGBLIGHT_ANIMATIONS by default on the Zen rev2

* Also fixing OLED as it is upside down

.clang-format

@@ -1,4 +1,4 @@
----
+---
 BasedOnStyle: Google
 AlignAfterOpenBracket: Align
 AlignConsecutiveAssignments: 'true'
@@ -20,7 +20,7 @@ SortIncludes: 'false'
 SpaceBeforeAssignmentOperators: 'true'
 SpaceBeforeParens: ControlStatements
 SpaceInEmptyParentheses: 'false'
-TabWidth: '2'
+TabWidth: '4'
 UseTab: Never
 
 ...

.editorconfig

@@ -5,7 +5,7 @@ root = true
 
 [*]
 indent_style = space
-indent_size = 2
+indent_size = 4
 
 # We recommend you to keep these unchanged
 charset = utf-8

.gitignore

@@ -54,6 +54,7 @@ util/Win_Check_Output.txt
 .vscode/tasks.json
 .vscode/last.sql
 .vscode/temp.sql
+.vscode/ipch/
 .stfolder
 .tags
 

.travis.yml

@@ -10,17 +10,22 @@ branches:
 env:
   global:
   - secure: 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
+  - MAKEFLAGS="-j3 --output-sync"
 before_install:
   - wget http://ww1.microchip.com/downloads/en/DeviceDoc/avr8-gnu-toolchain-3.5.4.1709-linux.any.x86_64.tar.gz || wget http://qmk.fm/avr8-gnu-toolchain-3.5.4.1709-linux.any.x86_64.tar.gz
+  # Need DFU > .5 for dfu-suffix
+  - sudo add-apt-repository --yes ppa:tormodvolden/ppa
+  - sudo apt-get update -qq
 install:
   - tar -zxf avr8-gnu-toolchain-3.5.4.1709-linux.any.x86_64.tar.gz
   - export PATH="$PATH:$TRAVIS_BUILD_DIR/avr8-gnu-toolchain-linux_x86_64/bin"
   - npm install -g moxygen
+  - sudo apt-get -y --force-yes install dfu-util
 before_script:
   - avr-gcc --version
 script:
 - git rev-parse --short HEAD
-- make test:all
+- bash util/travis_test.sh
 - bash util/travis_build.sh
 - bash util/travis_docs.sh
 addons:

Dockerfile

@@ -26,4 +26,4 @@ VOLUME /qmk_firmware
 WORKDIR /qmk_firmware
 COPY . .
 
-CMD make clean ; make git-submodule ; make $KEYBOARD:$KEYMAP
+CMD make $KEYBOARD:$KEYMAP

Makefile

@@ -534,6 +534,8 @@ endef
 %:
 	# Check if we have the CMP tool installed
 	cmp $(ROOT_DIR)/Makefile $(ROOT_DIR)/Makefile >/dev/null 2>&1; if [ $$? -gt 0 ]; then printf "$(MSG_NO_CMP)"; exit 1; fi;
+	# Ensure that python3 is installed. This check can be removed after python is used in more places.
+	if ! python3 --version 1> /dev/null 2>&1; then printf "$(MSG_PYTHON_MISSING)"; fi
 	# Check if the submodules are dirty, and display a warning if they are
 ifndef SKIP_GIT
 	if [ ! -e lib/chibios ]; then git submodule sync lib/chibios && git submodule update --depth 1 --init lib/chibios; fi

build_keyboard.mk

@@ -280,6 +280,23 @@ ifneq ("$(wildcard $(KEYBOARD_PATH_1)/config.h)","")
     CONFIG_H += $(KEYBOARD_PATH_1)/config.h
 endif
 
+POST_CONFIG_H :=
+ifneq ("$(wildcard $(KEYBOARD_PATH_1)/post_config.h)","")
+    POST_CONFIG_H += $(KEYBOARD_PATH_1)/post_config.h
+endif
+ifneq ("$(wildcard $(KEYBOARD_PATH_2)/post_config.h)","")
+    POST_CONFIG_H += $(KEYBOARD_PATH_2)/post_config.h
+endif
+ifneq ("$(wildcard $(KEYBOARD_PATH_3)/post_config.h)","")
+    POST_CONFIG_H += $(KEYBOARD_PATH_3)/post_config.h
+endif
+ifneq ("$(wildcard $(KEYBOARD_PATH_4)/post_config.h)","")
+    POST_CONFIG_H += $(KEYBOARD_PATH_4)/post_config.h
+endif
+ifneq ("$(wildcard $(KEYBOARD_PATH_5)/post_config.h)","")
+    POST_CONFIG_H += $(KEYBOARD_PATH_5)/post_config.h
+endif
+
 # Save the defines and includes here, so we don't include any keymap specific ones
 PROJECT_DEFS := $(OPT_DEFS)
 PROJECT_INC := $(VPATH) $(EXTRAINCDIRS) $(KEYBOARD_PATHS)
@@ -307,7 +324,6 @@ ifneq ("$(wildcard $(KEYMAP_PATH)/config.h)","")
 endif
 
 # # project specific files
-SRC += $(patsubst %.c,%.clib,$(LIB_SRC))
 SRC += $(KEYBOARD_SRC) \
     $(KEYMAP_C) \
     $(QUANTUM_SRC)
@@ -317,15 +333,16 @@ SRC += $(KEYBOARD_SRC) \
 
 # Search Path
 VPATH += $(KEYMAP_PATH)
+VPATH += $(USER_PATH)
 VPATH += $(KEYBOARD_PATHS)
 VPATH += $(COMMON_VPATH)
-VPATH += $(USER_PATH)
 
 include common_features.mk
 include $(TMK_PATH)/protocol.mk
 include $(TMK_PATH)/common.mk
 include bootloader.mk
 
+SRC += $(patsubst %.c,%.clib,$(LIB_SRC))
 SRC += $(patsubst %.c,%.clib,$(QUANTUM_LIB_SRC))
 SRC += $(TMK_COMMON_SRC)
 OPT_DEFS += $(TMK_COMMON_DEFS)
@@ -355,6 +372,7 @@ ifeq ($(strip $(VISUALIZER_ENABLE)), yes)
     include $(VISUALIZER_PATH)/visualizer.mk
 endif
 
+CONFIG_H += $(POST_CONFIG_H)
 ALL_CONFIGS := $(PROJECT_CONFIG) $(CONFIG_H)
 
 OUTPUTS := $(KEYMAP_OUTPUT) $(KEYBOARD_OUTPUT)

common_features.mk

@@ -103,7 +103,9 @@ ifeq ($(strip $(UNICODE_COMMON)), yes)
 endif
 
 ifeq ($(strip $(RGBLIGHT_ENABLE)), yes)
+    POST_CONFIG_H += $(QUANTUM_DIR)/rgblight_post_config.h
     OPT_DEFS += -DRGBLIGHT_ENABLE
+    SRC += $(QUANTUM_DIR)/color.c
     SRC += $(QUANTUM_DIR)/rgblight.c
     CIE1931_CURVE = yes
     LED_BREATHING_TABLE = yes
@@ -114,7 +116,7 @@ ifeq ($(strip $(RGBLIGHT_ENABLE)), yes)
     endif
 endif
 
-VALID_MATRIX_TYPES := yes IS31FL3731 IS31FL3733 custom
+VALID_MATRIX_TYPES := yes IS31FL3731 IS31FL3733 IS31FL3737 WS2812 custom
 
 LED_MATRIX_ENABLE ?= no
 ifneq ($(strip $(LED_MATRIX_ENABLE)), no)
@@ -135,6 +137,7 @@ ifeq ($(strip $(LED_MATRIX_ENABLE)), IS31FL3731)
 endif
 
 RGB_MATRIX_ENABLE ?= no
+
 ifneq ($(strip $(RGB_MATRIX_ENABLE)), no)
 ifeq ($(filter $(RGB_MATRIX_ENABLE),$(VALID_MATRIX_TYPES)),)
     $(error RGB_MATRIX_ENABLE="$(RGB_MATRIX_ENABLE)" is not a valid matrix type)
@@ -151,19 +154,39 @@ ifeq ($(strip $(RGB_MATRIX_ENABLE)), yes)
 endif
 
 ifeq ($(strip $(RGB_MATRIX_ENABLE)), IS31FL3731)
-    OPT_DEFS += -DIS31FL3731
+    OPT_DEFS += -DIS31FL3731 -DSTM32_I2C -DHAL_USE_I2C=TRUE
     COMMON_VPATH += $(DRIVER_PATH)/issi
     SRC += is31fl3731.c
     SRC += i2c_master.c
 endif
 
 ifeq ($(strip $(RGB_MATRIX_ENABLE)), IS31FL3733)
-    OPT_DEFS += -DIS31FL3733
+    OPT_DEFS += -DIS31FL3733 -DSTM32_I2C -DHAL_USE_I2C=TRUE
     COMMON_VPATH += $(DRIVER_PATH)/issi
     SRC += is31fl3733.c
     SRC += i2c_master.c
 endif
 
+ifeq ($(strip $(RGB_MATRIX_ENABLE)), IS31FL3737)
+    OPT_DEFS += -DIS31FL3737 -DSTM32_I2C -DHAL_USE_I2C=TRUE
+    COMMON_VPATH += $(DRIVER_PATH)/issi
+    SRC += is31fl3737.c
+    SRC += i2c_master.c
+endif
+
+ifeq ($(strip $(RGB_MATRIX_ENABLE)), WS2812)
+    OPT_DEFS += -DWS2812
+    SRC += ws2812.c
+endif
+
+ifeq ($(strip $(RGB_MATRIX_CUSTOM_KB)), yes)
+    OPT_DEFS += -DRGB_MATRIX_CUSTOM_KB
+endif
+
+ifeq ($(strip $(RGB_MATRIX_CUSTOM_USER)), yes)
+    OPT_DEFS += -DRGB_MATRIX_CUSTOM_USER
+endif
+
 ifeq ($(strip $(TAP_DANCE_ENABLE)), yes)
     OPT_DEFS += -DTAP_DANCE_ENABLE
     SRC += $(QUANTUM_DIR)/process_keycode/process_tap_dance.c
@@ -305,6 +328,7 @@ ifneq ($(strip $(DEBOUNCE_TYPE)), custom)
 endif
 
 ifeq ($(strip $(SPLIT_KEYBOARD)), yes)
+    POST_CONFIG_H += $(QUANTUM_DIR)/split_common/post_config.h
     OPT_DEFS += -DSPLIT_KEYBOARD
 
     # Include files used by all split keyboards
@@ -321,3 +345,16 @@ ifeq ($(strip $(SPLIT_KEYBOARD)), yes)
     endif
     COMMON_VPATH += $(QUANTUM_PATH)/split_common
 endif
+
+ifeq ($(strip $(OLED_DRIVER_ENABLE)), yes)
+    OPT_DEFS += -DOLED_DRIVER_ENABLE
+    COMMON_VPATH += $(DRIVER_PATH)/oled
+    QUANTUM_LIB_SRC += i2c_master.c
+    SRC += oled_driver.c
+endif
+
+SPACE_CADET_ENABLE ?= yes
+ifeq ($(strip $(SPACE_CADET_ENABLE)), yes)
+  SRC += $(QUANTUM_DIR)/process_keycode/process_space_cadet.c
+  OPT_DEFS += -DSPACE_CADET_ENABLE
+endif

docs/_summary.md

@@ -63,13 +63,13 @@
   * [LED Matrix](feature_led_matrix.md)
   * [Macros](feature_macros.md)
   * [Mouse Keys](feature_mouse_keys.md)
+  * [OLED Driver](feature_oled_driver)
   * [One Shot Keys](feature_advanced_keycodes.md#one-shot-keys)
   * [Pointing Device](feature_pointing_device.md)
   * [PS/2 Mouse](feature_ps2_mouse.md)
   * [RGB Lighting](feature_rgblight.md)
   * [RGB Matrix](feature_rgb_matrix.md)
-  * [Space Cadet Shift](feature_space_cadet_shift.md)
-  * [Space Cadet Shift Enter](feature_space_cadet_shift_enter.md)
+  * [Space Cadet](feature_space_cadet.md)
   * [Stenography](feature_stenography.md)
   * [Swap Hands](feature_swap_hands.md)
   * [Tap Dance](feature_tap_dance.md)

docs/config_options.md

@@ -59,6 +59,8 @@ This is a C header file that is one of the first things included, and will persi
   * define is matrix has ghost (unlikely)
 * `#define DIODE_DIRECTION COL2ROW`
   * COL2ROW or ROW2COL - how your matrix is configured. COL2ROW means the black mark on your diode is facing to the rows, and between the switch and the rows.
+* `#define DIRECT_PINS { { F1, F0, B0, C7 }, { F4, F5, F6, F7 } }`
+  * pins mapped to rows and columns, from left to right. Defines a matrix where each switch is connected to a separate pin and ground.
 * `#define AUDIO_VOICES`
   * turns on the alternate audio voices (to cycle through)
 * `#define C4_AUDIO`
@@ -126,6 +128,8 @@ If you define these options you will enable the associated feature, which may in
 
 * `#define TAPPING_TERM 200`
   * how long before a tap becomes a hold, if set above 500, a key tapped during the tapping term will turn it into a hold too
+* `#define TAPPING_TERM_PER_KEY`
+  * enables handling for per key `TAPPING_TERM` settings
 * `#define RETRO_TAPPING`
   * tap anyway, even after TAPPING_TERM, if there was no other key interruption between press and release
   * See [Retro Tapping](feature_advanced_keycodes.md#retro-tapping) for details
@@ -176,10 +180,12 @@ If you define these options you will enable the associated feature, which may in
   * run RGB animations
 * `#define RGBLED_NUM 12`
   * number of LEDs
+* `#define RGBLIGHT_SPLIT`
+  * Needed if both halves of the board have RGB LEDs wired directly to the RGB output pin on the controllers instead of passing the output of the left half to the input of the right half
 * `#define RGBLED_SPLIT { 6, 6 }`
   * number of LEDs connected that are directly wired to `RGB_DI_PIN` on each half of a split keyboard
   * First value indicates number of LEDs for left half, second value is for the right half
-  * Needed if both halves of the board have RGB LEDs wired directly to the RGB output pin on the controllers instead of passing the output of the left half to the input of the right half
+  * When RGBLED_SPLIT is defined, RGBLIGHT_SPLIT is implicitly defined.
 * `#define RGBLIGHT_HUE_STEP 12`
   * units to step when in/decreasing hue
 * `#define RGBLIGHT_SAT_STEP 25`
@@ -324,6 +330,8 @@ Use these to enable or disable building certain features. The more you have enab
   * Forces the keyboard to wait for a USB connection to be established before it starts up
 * `NO_USB_STARTUP_CHECK`
   * Disables usb suspend check after keyboard startup. Usually the keyboard waits for the host to wake it up before any tasks are performed. This is useful for split keyboards as one half will not get a wakeup call but must send commands to the master.
+* `LINK_TIME_OPTIMIZATION_ENABLE`
+  = Enables Link Time Optimization (`LTO`) when compiling the keyboard.  This makes the process take longer, but can significantly reduce the compiled size (and since the firmware is small, the added time is not noticable).  However, this will automatically disable the old Macros and Functions features automatically, as these break when `LTO` is enabled.  It does this by automatically defining `NO_ACTION_MACRO` and `NO_ACTION_FUNCTION` 
 
 ## USB Endpoint Limitations
 

docs/contributing.md

@@ -56,7 +56,7 @@ Never made an open source contribution before? Wondering how contributions work
 
 Most of our style is pretty easy to pick up on, but right now it's not entirely consistent. You should match the style of the code surrounding your change, but if that code is inconsistent or unclear use the following guidelines:
 
-* We indent using two spaces (soft tabs)
+* We indent using four (4) spaces (soft tabs)
 * We use a modified One True Brace Style
   * Opening Brace: At the end of the same line as the statement that opens the block
   * Closing Brace: Lined up with the first character of the statement that opens the block
@@ -71,6 +71,14 @@ Most of our style is pretty easy to pick up on, but right now it's not entirely
   * If you not sure if a comment is obvious, go ahead and include it.
 * In general we don't wrap lines, they can be as long as needed. If you do choose to wrap lines please do not wrap any wider than 76 columns.
 * We use `#pragma once` at the start of header files rather than old-style include guards (`#ifndef THIS_FILE_H`, `#define THIS_FILE_H`, ..., `#endif`)
+* We accept both forms of preprocessor if's: `#ifdef DEFINED` and `#if defined(DEFINED)`
+  * If you are not sure which to prefer use the `#if defined(DEFINED)` form.
+  * Do not change existing code from one style to the other, except when moving to a multiple condition `#if`.
+  * Do not put whitespace between `#` and `if`.
+  * When deciding how (or if) to indent directives keep these points in mind:
+    * Readability is more important than consistency.
+    * Follow the file's existing style. If the file is mixed follow the style that makes sense for the section you are modifying.
+    * When choosing to indent you can follow the indention level of the surrounding C code, or preprocessor directives can have their own indent level. Choose the style that best communicates the intent of your code.
 
 Here is an example for easy reference:
 

docs/custom_quantum_functions.md

@@ -323,6 +323,7 @@ uint32_t layer_state_set_user(uint32_t state) {
 * Keyboard/Revision: `uint32_t layer_state_set_kb(uint32_t state)`
 * Keymap: `uint32_t layer_state_set_user(uint32_t state)`
 
+
 The `state` is the bitmask of the active layers, as explained in the [Keymap Overview](keymap.md#keymap-layer-status)
 
 
@@ -460,3 +461,31 @@ And you're done.  The RGB layer indication will only work if you want it to. And
 * Keymap: `void eeconfig_init_user(void)`, `uint32_t eeconfig_read_user(void)` and `void eeconfig_update_user(uint32_t val)`
 
 The `val` is the value of the data that you want to write to EEPROM.  And the `eeconfig_read_*` function return a 32 bit (DWORD) value from the EEPROM. 
+
+# Custom Tapping Term
+
+By default, the tapping term is defined globally, and is not configurable by key.  For most users, this is perfectly fine.  But in come cases, dual function keys would be greatly improved by different timeouts than `LT` keys, or because some keys may be easier to hold than others.  Instead of using custom key codes for each, this allows for per key configurable `TAPPING_TERM`.
+
+To enable this functionality, you need to add `#define TAPPING_TERM_PER_KEY` to your `config.h`, first.  
+
+
+## Example `get_tapping_term` Implementation
+
+To change the `TAPPING TERM` based on the keycode, you'd want to add something like the following to your `keymap.c` file: 
+
+```c
+uint16_t get_tapping_term(uint16_t keycode) {
+  switch (keycode) {
+    case SFT_T(KC_SPC):
+      return TAPPING_TERM + 1250;
+    case LT(1, KC_GRV):
+      return 130;
+    default:
+      return TAPPING_TERM;
+  }
+}
+```
+
+### `get_tapping_term` Function Documentation
+
+Unlike many of the other functions here, there isn't a need (or even reason) to have a quantum or keyboard level function. Only a user level function is useful here, so no need to mark it as such.

docs/feature_backlight.md

@@ -30,7 +30,31 @@ You should then be able to use the keycodes below to change the backlight level.
 
 This feature is distinct from both the [RGB underglow](feature_rgblight.md) and [RGB matrix](feature_rgb_matrix.md) features as it usually allows for only a single colour per switch, though you can obviously use multiple different coloured LEDs on a keyboard.
 
-Hardware PWM is only supported on certain pins of the MCU, so if the backlighting is not connected to one of them, a software implementation will be used, and backlight breathing will not be available. Currently the supported pins are `B5`, `B6`, `B7`, and `C6`.
+Hardware PWM is only supported on certain pins of the MCU, so if the backlighting is not connected to one of them, a software PWM implementation triggered by hardware timer interrupts will be used.
+
+Hardware PWM is supported according to the following table:
+
+| Backlight Pin | Hardware timer |
+|---------------|----------------|
+|`B5`           | Timer 1        |
+|`B6`           | Timer 1        |
+|`B7`           | Timer 1        |
+|`C6`           | Timer 3        |
+| other         | Software PWM   |
+
+The [audio feature](feature_audio.md) also uses hardware timers. Please refer to the following table to know what hardware timer the software PWM will use depending on the audio configuration:
+
+| Audio Pin(s) | Audio Timer | Software PWM Timer |
+|--------------|-------------|--------------------|
+| `C4`         | Timer 3     | Timer 1            |
+| `C5`         | Timer 3     | Timer 1            |
+| `C6`         | Timer 3     | Timer 1            |
+| `B5`         | Timer 1     | Timer 3            |
+| `B6`         | Timer 1     | Timer 3            |
+| `B7`         | Timer 1     | Timer 3            |
+| `Bx` & `Cx`  | Timer 1 & 3 | None               |
+
+When all timers are in use for [audio](feature_audio.md), the backlight software PWM will not use a hardware timer, but instead will be triggered during the matrix scan. In this case the backlight doesn't support breathing and might show lighting artifacts (for instance flickering), because the PWM computation might not be called with enough timing precision.
 
 ## Configuration
 
@@ -39,11 +63,26 @@ To change the behaviour of the backlighting, `#define` these in your `config.h`:
 |Define               |Default      |Description                                                                                                  |
 |---------------------|-------------|-------------------------------------------------------------------------------------------------------------|
 |`BACKLIGHT_PIN`      |`B7`         |The pin that controls the LEDs. Unless you are designing your own keyboard, you shouldn't need to change this|
+|`BACKLIGHT_PINS`     |*Not defined*|experimental: see below for more information|
 |`BACKLIGHT_LEVELS`   |`3`          |The number of brightness levels (maximum 15 excluding off)                                                   |
 |`BACKLIGHT_CAPS_LOCK`|*Not defined*|Enable Caps Lock indicator using backlight (for keyboards without dedicated LED)                             |
-|`BACKLIGHT_BREATHING`|*Not defined*|Enable backlight breathing, if hardware PWM is used                                                          |
+|`BACKLIGHT_BREATHING`|*Not defined*|Enable backlight breathing, if supported                                                          |
 |`BREATHING_PERIOD`   |`6`          |The length of one backlight "breath" in seconds                                                              |
 
+## Multiple backlight pins
+
+Most keyboards have only one backlight pin which control all backlight LEDs (especially if the backlight is connected to an hardware PWM pin).
+In software PWM, it is possible to define multiple backlight pins. All those pins will be turned on and off at the same time during the PWM duty cycle.
+This feature allows to set for instance the Caps Lock LED (or any other controllable LED) brightness at the same level as the other LEDs of the backlight. This is useful if you have mapped LCTRL in place of Caps Lock and you need the Caps Lock LED to be part of the backlight instead of being activated when Caps Lock is on.
+
+To activate multiple backlight pins, you need to add something like this to your user `config.h`:
+
+~~~c
+#define BACKLIGHT_LED_COUNT 2
+#undef BACKLIGHT_PIN
+#define BACKLIGHT_PINS { F5, B2 }
+~~~
+
 ## Hardware PWM Implementation
 
 When using the supported pins for backlighting, QMK will use a hardware timer configured to output a PWM signal. This timer will count up to `ICRx` (by default `0xFFFF`) before resetting to 0.
@@ -53,6 +92,15 @@ In this way `OCRxx` essentially controls the duty cycle of the LEDs, and thus th
 The breathing effect is achieved by registering an interrupt handler for `TIMER1_OVF_vect` that is called whenever the counter resets, roughly 244 times per second.
 In this handler, the value of an incrementing counter is mapped onto a precomputed brightness curve. To turn off breathing, the interrupt handler is simply disabled, and the brightness reset to the level stored in EEPROM.
 
+## Software PWM Implementation
+
+When `BACKLIGHT_PIN` is not set to a hardware backlight pin, QMK will use a hardware timer configured to trigger software interrupts. This time will count up to `ICRx` (by default `0xFFFF`) before resetting to 0.
+When resetting to 0, the CPU will fire an OVF (overflow) interrupt that will turn the LEDs on, starting the duty cycle.
+The desired brightness is calculated and stored in the `OCRxx` register. When the counter reaches this value, the CPU will fire a Compare Output match interrupt, which will turn the LEDs off.
+In this way `OCRxx` essentially controls the duty cycle of the LEDs, and thus the brightness, where `0x0000` is completely off and `0xFFFF` is completely on.
+
+The breathing effect is the same as in the hardware PWM implementation.
+
 ## Backlight Functions
 
 |Function  |Description                                                |

docs/feature_combo.md

@@ -19,7 +19,6 @@ combo_t key_combos[COMBO_COUNT] = {COMBO(test_combo, KC_ESC)};
 This will send "Escape" if you hit the A and B keys.
 
 !> This method only supports [basic keycodes](keycodes_basic.md). See the examples for more control.
-!> You cannot reuse (share) keys in combos. Each key should only belong to a single combo.  
 
 ## Examples
 

docs/feature_debounce_type.md

@@ -33,7 +33,10 @@ The debounce code is compatible with split keyboards.
 # Changing between included debouncing methods
 You can either use your own code, by including your own debounce.c, or switch to another included one.
 Included debounce methods are:
-* eager_pk - debouncing per key. On any state change, response is immediate, followed by ```DEBOUNCE_DELAY``` millseconds of no further input for that key
+* eager_pr - debouncing per row. On any state change, response is immediate, followed by locking the row ```DEBOUNCE_DELAY``` milliseconds of no further input for that row. 
+For use in keyboards where refreshing ```NUM_KEYS``` 8-bit counters is computationally expensive / low scan rate, and fingers usually only hit one row at a time. This could be
+appropriate for the ErgoDox models; the matrix is rotated 90°, and hence its "rows" are really columns, and each finger only hits a single "row" at a time in normal use.
+* eager_pk - debouncing per key. On any state change, response is immediate, followed by ```DEBOUNCE_DELAY``` milliseconds of no further input for that key
 * sym_g - debouncing per keyboard. On any state change, a global timer is set. When ```DEBOUNCE_DELAY``` milliseconds of no changes has occured, all input changes are pushed.
 
 

docs/feature_macros.md

@@ -195,6 +195,49 @@ This will clear all mods currently pressed.
 
 This will clear all keys besides the mods currently pressed.
 
+## Advanced Example: 
+
+### Super ALT↯TAB
+
+This macro will register `KC_LALT` and tap `KC_TAB`, then wait for 1000ms. If the key is tapped again, it will send another `KC_TAB`; if there is no tap, `KC_LALT` will be unregistered, thus allowing you to cycle through windows. 
+
+```c
+bool is_alt_tab_active = false;    # ADD this near the begining of keymap.c
+uint16_t alt_tab_timer = 0;        # we will be using them soon.
+
+enum custom_keycodes {             # Make sure have the awesome keycode ready
+  ALT_TAB = SAFE_RANGE,
+};
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  switch (keycode) {               # This will do most of the grunt work with the keycodes.
+    case ALT_TAB:
+      if (record->event.pressed) {
+        if (!is_alt_tab_active) {
+          is_alt_tab_active = true;
+          register_code(KC_LALT);
+        } 
+        alt_tab_timer = timer_read();
+        register_code(KC_TAB);
+      } else {
+        unregister_code(KC_TAB);
+      }
+      break;
+  }
+  return true;
+}
+
+void matrix_scan_user(void) {     # The very important timer. 
+  if (is_alt_tab_active) {
+    if (timer_elapsed(alt_tab_timer) > 1000) {
+      unregister_code(KC_LALT);
+      is_alt_tab_active = false;
+    }
+  }
+}
+```
+
+---
 
 ##  **(DEPRECATED)** The Old Way: `MACRO()` & `action_get_macro`
 
@@ -273,7 +316,9 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 ```
 
 
-### Advanced Example: Single-Key Copy/Paste
+## Advanced Example: 
+
+### Single-Key Copy/Paste
 
 This example defines a macro which sends `Ctrl-C` when pressed down, and `Ctrl-V` when released.
 

docs/feature_mouse_keys.md

@@ -1,114 +1,119 @@
-# Mousekeys
+# Mouse keys
 
+Mouse keys is a feature that allows you to emulate a mouse using your keyboard. You can move the pointer at different speeds, press 5 buttons and scroll in 8 directions.
 
-Mousekeys is a feature that allows you to emulate a mouse using your keyboard. You can move the pointer around, click up to 5 buttons, and even scroll in all 4 directions.
+## Adding mouse keys to your keyboard
 
-There are 2 ways to define how the mousekeys behave, using "[auto-accelerating](#configuring-the-behavior-of-mousekeys-with-auto-accelerated-movement)" or "[3-speed constant](#configuring-the-behavior-of-mousekeys-with-3-speed-constant-movement)" behavior.
+To use mouse keys, you must at least enable mouse keys support and map mouse actions to keys on your keyboard.
 
-In either case, you will need to enable mousekeys in your makefile,
-and add the relevant [keycodes](#mapping-mouse-actions-to-keyboard-keys) to your keymap.
+### Enabling mouse keys
 
-#### Enable Mousekeys
+To enable mouse keys, add the following line to your keymap’s `rules.mk`:
 
-To enable the mousekey functionality, add the following line to your keymap's `rules.mk`:
-
-```
+```c
 MOUSEKEY_ENABLE = yes
 ```
 
-#### Mapping Mouse Actions to Keyboard Keys
+### Mapping mouse actions
 
-You can use these keycodes within your keymap to map button presses to mouse actions:
+In your keymap you can use the following keycodes to map key presses to mouse actions:
 
-|Key             |Aliases  |Description                        |
-|----------------|---------|-----------------------------------|
-|`KC_MS_UP`      |`KC_MS_U`|Mouse Cursor Up                    |
-|`KC_MS_DOWN`    |`KC_MS_D`|Mouse Cursor Down                  |
-|`KC_MS_LEFT`    |`KC_MS_L`|Mouse Cursor Left                  |
-|`KC_MS_RIGHT`   |`KC_MS_R`|Mouse Cursor Right                 |
-|`KC_MS_BTN1`    |`KC_BTN1`|Mouse Button 1                     |
-|`KC_MS_BTN2`    |`KC_BTN2`|Mouse Button 2                     |
-|`KC_MS_BTN3`    |`KC_BTN3`|Mouse Button 3                     |
-|`KC_MS_BTN4`    |`KC_BTN4`|Mouse Button 4                     |
-|`KC_MS_BTN5`    |`KC_BTN5`|Mouse Button 5                     |
-|`KC_MS_WH_UP`   |`KC_WH_U`|Mouse Wheel Up                     |
-|`KC_MS_WH_DOWN` |`KC_WH_D`|Mouse Wheel Down                   |
-|`KC_MS_WH_LEFT` |`KC_WH_L`|Mouse Wheel Left                   |
-|`KC_MS_WH_RIGHT`|`KC_WH_R`|Mouse Wheel Right                  |
-|`KC_MS_ACCEL0`  |`KC_ACL0`|Set mouse acceleration to 0(slow)  |
-|`KC_MS_ACCEL1`  |`KC_ACL1`|Set mouse acceleration to 1(medium)|
-|`KC_MS_ACCEL2`  |`KC_ACL2`|Set mouse acceleration to 2(fast)  |
+|Key             |Aliases  |Description      |
+|----------------|---------|-----------------|
+|`KC_MS_UP`      |`KC_MS_U`|Move cursor up   |
+|`KC_MS_DOWN`    |`KC_MS_D`|Move cursor down |
+|`KC_MS_LEFT`    |`KC_MS_L`|Move cursor left |
+|`KC_MS_RIGHT`   |`KC_MS_R`|Move cursor right|
+|`KC_MS_BTN1`    |`KC_BTN1`|Press button 1   |
+|`KC_MS_BTN2`    |`KC_BTN2`|Press button 2   |
+|`KC_MS_BTN3`    |`KC_BTN3`|Press button 3   |
+|`KC_MS_BTN4`    |`KC_BTN4`|Press button 4   |
+|`KC_MS_BTN5`    |`KC_BTN5`|Press button 5   |
+|`KC_MS_WH_UP`   |`KC_WH_U`|Move wheel up    |
+|`KC_MS_WH_DOWN` |`KC_WH_D`|Move wheel down  |
+|`KC_MS_WH_LEFT` |`KC_WH_L`|Move wheel left  |
+|`KC_MS_WH_RIGHT`|`KC_WH_R`|Move wheel right |
+|`KC_MS_ACCEL0`  |`KC_ACL0`|Set speed to 0   |
+|`KC_MS_ACCEL1`  |`KC_ACL1`|Set speed to 1   |
+|`KC_MS_ACCEL2`  |`KC_ACL2`|Set speed to 2   |
 
+## Configuring mouse keys
 
-## Configuring the Behavior of Mousekeys with auto-accelerated movement
+Mouse keys supports two different modes to move the cursor:
 
-This behavior is intended to emulate the X Window System MouseKeysAccel feature. You can read more about it [on Wikipedia](https://en.wikipedia.org/wiki/Mouse_keys).
+* **Accelerated (default):** Holding movement keys accelerates the cursor until it reaches its maximum speed.
+* **Constant:** Holding movement keys moves the cursor at constant speeds.
 
-The default speed for controlling the mouse with the keyboard is intentionally slow. You can adjust these parameters by adding these settings to your keymap's `config.h` file. All times are specified in milliseconds (ms).
+The same principle applies to scrolling.
 
-```
-#define MOUSEKEY_DELAY             300
-#define MOUSEKEY_INTERVAL          50
-#define MOUSEKEY_MAX_SPEED         10
-#define MOUSEKEY_TIME_TO_MAX       20
-#define MOUSEKEY_WHEEL_MAX_SPEED   8
-#define MOUSEKEY_WHEEL_TIME_TO_MAX 40
-```
+Configuration options that are times, intervals or delays are given in milliseconds. Scroll speed is given as multiples of the default scroll step. For example, a scroll speed of 8 means that each scroll action covers 8 times the length of the default scroll step as defined by your operating system or application.
 
-#### `MOUSEKEY_DELAY`
+### Accelerated mode
 
-When one of the mouse movement buttons is pressed this setting is used to define the delay between that button press and the mouse cursor moving. Some people find that small movements are impossible if this setting is too low, while settings that are too high feel sluggish.
+This is the default mode. You can adjust the cursor and scrolling acceleration using the following settings in your keymap’s `config.h` file:
 
-#### `MOUSEKEY_INTERVAL`
+|Define                      |Default|Description                                              |
+|----------------------------|-------|---------------------------------------------------------|
+|`MOUSEKEY_DELAY`            |300    |Delay between pressing a movement key and cursor movement|
+|`MOUSEKEY_INTERVAL`         |50     |Time between cursor movements                            |
+|`MOUSEKEY_MAX_SPEED`        |10     |Maximum cursor speed at which acceleration stops         |
+|`MOUSEKEY_TIME_TO_MAX`      |20     |Time until maximum cursor speed is reached               |
+|`MOUSEKEY_WHEEL_MAX_SPEED`  |8      |Maximum number of scroll steps per scroll action         |
+|`MOUSEKEY_WHEEL_TIME_TO_MAX`|40     |Time until maximum scroll speed is reached               |
 
-When a movement key is held down this specifies how long to wait between each movement report. Lower settings will translate into an effectively higher mouse speed.
+Tips:
 
-#### `MOUSEKEY_MAX_SPEED`
+* Setting `MOUSEKEY_DELAY` too low makes the cursor unresponsive. Setting it too high makes small movements difficult.
+* For smoother cursor movements, lower the value of `MOUSEKEY_INTERVAL`. If the refresh rate of your display is 60Hz, you could set it to `16` (1/60). As this raises the cursor speed significantly, you may want to lower `MOUSEKEY_MAX_SPEED`.
+* Setting `MOUSEKEY_TIME_TO_MAX` or `MOUSEKEY_WHEEL_TIME_TO_MAX` to `0` will disable acceleration for the cursor or scrolling respectively. This way you can make one of them constant while keeping the other accelerated, which is not possible in constant speed mode.
 
-As a movement key is held down the speed of the mouse cursor will increase until it reaches `MOUSEKEY_MAX_SPEED`.
+Cursor acceleration uses the same algorithm as the X Window System MouseKeysAccel feature. You can read more about it [on Wikipedia](https://en.wikipedia.org/wiki/Mouse_keys).
 
-#### `MOUSEKEY_TIME_TO_MAX`
+### Constant mode
 
-How long you want to hold down a movement key for until `MOUSEKEY_MAX_SPEED` is reached. This controls how quickly your cursor will accelerate.
+In this mode you can define multiple different speeds for both the cursor and the mouse wheel. There is no acceleration. `KC_ACL0`, `KC_ACL1` and `KC_ACL2` change the cursor and scroll speed to their respective setting.
 
-#### `MOUSEKEY_WHEEL_MAX_SPEED`
+You can choose whether speed selection is momentary or tap-to-select:
 
-The top speed for scrolling movements.
+* **Momentary:** The chosen speed is only active while you hold the respective key. When the key is raised, mouse keys returns to the unmodified speed.
+* **Tap-to-select:** The chosen speed is activated when you press the respective key and remains active even after the key has been raised. The default speed is that of `KC_ACL1`. There is no unmodified speed.
 
-#### `MOUSEKEY_WHEEL_TIME_TO_MAX`
+The default speeds from slowest to fastest are as follows:
 
-How long you want to hold down a scroll key for until `MOUSEKEY_WHEEL_MAX_SPEED` is reached. This controls how quickly your scrolling will accelerate.
+* **Momentary:** `KC_ACL0` < `KC_ACL1` < *unmodified* < `KC_ACL2`
+* **Tap-to-select:** `KC_ACL0` < `KC_ACL1` < `KC_ACL2`
 
+To use constant speed mode, you must at least define `MK_3_SPEED` in your keymap’s `config.h` file:
 
-## Configuring the Behavior of Mousekeys with 3-speed constant movement
-
-In your keymap's `config.h`, you must add the line:
-```
+```c
 #define MK_3_SPEED
 ```
-Then you can precisely define 3 different speeds for both the cursor and the mouse wheel, and also whether speed selection is momentary or tap-to-select.
-For each speed, you can specify how many milliseconds you want between reports(interval), and how far you want to it to move per report(offset).
 
-For example:
+To enable momentary mode, also define `MK_MOMENTARY_ACCEL`:
 
-```
-#define MK_3_SPEED
-#define MK_MOMENTARY_ACCEL // comment this out for tap-to-select acceleration
-// cursor speeds:
-#define MK_C_OFFSET_SLOW     1 // pixels
-#define MK_C_INTERVAL_SLOW 100 // milliseconds
-#define MK_C_OFFSET_MED      4
-#define MK_C_INTERVAL_MED   16
-#define MK_C_OFFSET_FAST    12
-#define MK_C_INTERVAL_FAST  16
-// scroll wheel speeds:
-#define MK_W_OFFSET_SLOW     1 // wheel clicks
-#define MK_W_INTERVAL_SLOW 400 // milliseconds
-#define MK_W_OFFSET_MED      1
-#define MK_W_INTERVAL_MED  200
-#define MK_W_OFFSET_FAST     1
-#define MK_W_INTERVAL_FAST 100
+```c
+#define MK_MOMENTARY_ACCEL
 ```
 
-Medium values will be used as the default or unmodified speed.
-The speed at which both the cursor and scrolling move can be selected with KC_ACL0, KC_ACL1, KC_ACL2 for slow, medium, and fast. However, if you leave MK_MOMENTARY_ACCEL defined then there is no need to ever send KC_ACL1, since that will be the unmodified speed.
+Use the following settings if you want to adjust cursor movement or scrolling:
+
+|Define               |Default      |Description                                |
+|---------------------|-------------|-------------------------------------------|
+|`MK_3_SPEED`         |*Not defined*|Enable constant cursor speeds              |
+|`MK_MOMENTARY_ACCEL` |*Not defined*|Enable momentary speed selection           |
+|`MK_C_OFFSET_UNMOD`  |16           |Cursor offset per movement (unmodified)    |
+|`MK_C_INTERVAL_UNMOD`|16           |Time between cursor movements (unmodified) |
+|`MK_C_OFFSET_0`      |1            |Cursor offset per movement (`KC_ACL0`)     |
+|`MK_C_INTERVAL_0`    |32           |Time between cursor movements (`KC_ACL0`)  |
+|`MK_C_OFFSET_1`      |4            |Cursor offset per movement (`KC_ACL1`)     |
+|`MK_C_INTERVAL_1`    |16           |Time between cursor movements (`KC_ACL1`)  |
+|`MK_C_OFFSET_2`      |32           |Cursor offset per movement (`KC_ACL2`)     |
+|`MK_C_INTERVAL_2`    |16           |Time between cursor movements (`KC_ACL2`)  |
+|`MK_W_OFFSET_UNMOD`  |1            |Scroll steps per scroll action (unmodified)|
+|`MK_W_INTERVAL_UNMOD`|40           |Time between scroll steps (unmodified)     |
+|`MK_W_OFFSET_0`      |1            |Scroll steps per scroll action (`KC_ACL0`) |
+|`MK_W_INTERVAL_0`    |360          |Time between scroll steps (`KC_ACL0`)      |
+|`MK_W_OFFSET_1`      |1            |Scroll steps per scroll action (`KC_ACL1`) |
+|`MK_W_INTERVAL_1`    |120          |Time between scroll steps (`KC_ACL1`)      |
+|`MK_W_OFFSET_2`      |1            |Scroll steps per scroll action (`KC_ACL2`) |
+|`MK_W_INTERVAL_2`    |20           |Time between scroll steps (`KC_ACL2`)      |

docs/feature_oled_driver.md

@@ -0,0 +1,274 @@
+# OLED Driver
+
+## OLED Supported Hardware
+
+128x32 OLED modules using SSD1306 driver IC over I2C. Supported on AVR based keyboards. Possible but untested hardware includes ARM based keyboards and other sized OLED modules using SSD1306 over I2C, such as 128x64. 
+
+!> Warning: This OLED Driver currently uses the new i2c_master driver from split common code. If your split keyboard uses i2c to communication between sides this driver could cause an address conflict (serial is fine). Please contact your keyboard vendor and ask them to migrate to the latest split common code to fix this. 
+
+## Usage
+
+To enable the OLED feature, there are three steps. First, when compiling your keyboard, you'll need to set `OLED_DRIVER_ENABLE=yes` in `rules.mk`, e.g.:
+
+```
+OLED_DRIVER_ENABLE = yes
+```
+
+This enables the feature and the `OLED_DRIVER_ENABLE` define. Then in your `keymap.c` file, you will need to implement the user task call, e.g:
+
+```C++
+#ifdef OLED_DRIVER_ENABLE
+void oled_task_user(void) {
+  // Host Keyboard Layer Status
+  oled_write_P(PSTR("Layer: "), false);
+  switch (biton32(layer_state)) {
+    case _QWERTY:
+      oled_write_P(PSTR("Default\n"), false);
+      break;
+    case _FN:
+      oled_write_P(PSTR("FN\n"), false);
+      break;
+    case _ADJ:
+      oled_write_P(PSTR("ADJ\n"), false);
+      break;
+    default:
+      // Or use the write_ln shortcut over adding '\n' to the end of your string
+      oled_write_ln_P(PSTR("Undefined"), false);
+  }
+
+  // Host Keyboard LED Status
+  uint8_t led_usb_state = host_keyboard_leds();
+  oled_write_P(led_usb_state & (1<<USB_LED_NUM_LOCK) ? PSTR("NUMLCK ") : PSTR("       "), false);
+  oled_write_P(led_usb_state & (1<<USB_LED_CAPS_LOCK) ? PSTR("CAPLCK ") : PSTR("       "), false);
+  oled_write_P(led_usb_state & (1<<USB_LED_SCROLL_LOCK) ? PSTR("SCRLCK ") : PSTR("       "), false);
+}
+#endif
+```
+
+## Logo Example
+
+In the default font, ranges in the font file are reserved for a QMK Logo. To Render this logo to the oled screen, use the following code example:
+
+```C++
+static void render_logo(void) {
+  static const char PROGMEM qmk_logo[] = {
+    0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,
+    0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,
+    0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,0};
+
+  oled_write_P(qmk_logo, false);
+}
+```
+
+## Other Examples
+
+In split keyboards, it is very common to have two OLED displays that each render different content and oriented flipped differently. You can do this by switching which content to render by using the return from `is_keyboard_master()` or `is_keyboard_left()` found in `split_util.h`, e.g:
+
+```C++
+#ifdef OLED_DRIVER_ENABLE
+oled_rotation_t oled_init_user(oled_rotation_t rotation) {
+  if (!is_keyboard_master())
+    return OLED_ROTATION_180;  // flips the display 180 degrees if offhand
+  return rotation;
+}
+
+void oled_task_user(void) {
+  if (is_keyboard_master()) {
+    render_status();     // Renders the current keyboard state (layer, lock, caps, scroll, etc)
+  } else {
+    render_logo();       // Renders a statuc logo
+    oled_scroll_left();  // Turns on scrolling
+  }
+}
+#endif
+```
+
+
+ ## Basic Configuration
+
+|Define                 |Default        |Description                                     |
+|-----------------------|---------------|------------------------------------------------|
+|`OLED_DISPLAY_ADDRESS` |`0x3C`         |The i2c address of the OLED Display             |
+|`OLED_FONT_H`          |`"glcdfont.c"` |The font code file to use for custom fonts      |
+|`OLED_FONT_START`      |`0`            |The starting characer index for custom fonts    |
+|`OLED_FONT_END`        |`224`          |The ending characer index for custom fonts      |
+|`OLED_FONT_WIDTH`      |`6`            |The font width                                  |
+|`OLED_FONT_HEIGHT`     |`8`            |The font height (untested)                      |
+|`OLED_DISABLE_TIMEOUT` |*Not defined*  |Disables the built in OLED timeout feature. Useful when implementing custom timeout rules.|
+
+
+
+ ## 128x64 & Custom sized OLED Displays
+
+ The default display size for this feature is 128x32 and all necessary defines are precalculated with that in mind. We have added a define, `OLED_DISPLAY_128X64`, to switch all the values to be used in a 128x64 display, as well as added a custom define, `OLED_DISPLAY_CUSTOM`, that allows you to provide the necessary values to the driver.
+
+|Define                 |Default        |Description                                                      |
+|-----------------------|---------------|-----------------------------------------------------------------|
+|`OLED_DISPLAY_128X64`  |*Not defined*  |Changes the display defines for use with 128x64 displays.        |
+|`OLED_DISPLAY_CUSTOM`  |*Not defined*  |Changes the display defines for use with custom displays.<br />Requires user to implement the below defines. |
+|`OLED_DISPLAY_WIDTH`   |`128`          |The width of the OLED display.                                   |
+|`OLED_DISPLAY_HEIGHT`  |`32`           |The height of the OLED display.                                  |
+|`OLED_MATRIX_SIZE`     |`512`          |The local buffer size to allocate.<br />`(OLED_DISPLAY_HEIGHT / 8 * OLED_DISPLAY_WIDTH)`|
+|`OLED_BLOCK_TYPE`      |`uint16_t`     |The unsigned integer type to use for dirty rendering.|
+|`OLED_BLOCK_COUNT`     |`16`           |The number of blocks the display is divided into for dirty rendering.<br />`(sizeof(OLED_BLOCK_TYPE) * 8)`|
+|`OLED_BLOCK_SIZE`      |`32`           |The size of each block for dirty rendering<br />`(OLED_MATRIX_SIZE / OLED_BLOCK_COUNT)`|
+|`OLED_SOURCE_MAP`      |`{ 0, ... N }` |Precalculated source array to use for mapping source buffer to target OLED memory in 90 degree rendering.         |
+|`OLED_TARGET_MAP`      |`{ 24, ... N }`|Precalculated target array to use for mapping source buffer to target OLED memory in 90 degree rendering.         |
+
+
+### 90 Degree Rotation - Technical Mumbo Jumbo 
+
+```C
+// OLED Rotation enum values are flags
+typedef enum {
+    OLED_ROTATION_0   = 0,
+    OLED_ROTATION_90  = 1,
+    OLED_ROTATION_180 = 2,
+    OLED_ROTATION_270 = 3, // OLED_ROTATION_90 | OLED_ROTATION_180
+} oled_rotation_t;
+```
+
+ OLED displays driven by SSD1306 drivers only natively support in hard ware 0 degree and 180 degree rendering. This feature is done in software and not free. Using this feature will increase the time to calculate what data to send over i2c to the OLED. If you are strapped for cycles, this can cause keycodes to not register. In testing however, the rendering time on an `atmega32u4` board only went from 2ms to 5ms and keycodes not registering was only noticed once we hit 15ms. 
+ 
+ 90 Degree Rotated Rendering is achieved by using bitwise operations to rotate each 8 block of memory and uses two precalculated arrays to remap buffer memory to OLED memory. The memory map defines are precalculated for remap performance and are calculated based on the OLED Height, Width, and Block Size. For example, in the 128x32 implementation with a `uint8_t` block type, we have a 64 byte block size. This gives us eight 8 byte blocks that need to be rotated and rendered. The OLED renders horizontally two 8 byte blocks before moving down a page, e.g:
+
+|   |   |   |   |   |   |
+|---|---|---|---|---|---|
+| 0 | 1 |   |   |   |   |
+| 2 | 3 |   |   |   |   |
+| 4 | 5 |   |   |   |   |
+| 6 | 7 |   |   |   |   |
+
+However the local buffer is stored as if it was Height x Width display instead of Width x Height, e.g:
+
+|   |   |   |   |   |   |
+|---|---|---|---|---|---|
+| 3 | 7 |   |   |   |   |
+| 2 | 6 |   |   |   |   |
+| 1 | 5 |   |   |   |   |
+| 0 | 4 |   |   |   |   |
+
+So those precalculated arrays just index the memory offsets in the order in which each one iterates its data.
+
+## OLED API
+
+```C++
+// OLED Rotation enum values are flags
+typedef enum {
+    OLED_ROTATION_0   = 0,
+    OLED_ROTATION_90  = 1,
+    OLED_ROTATION_180 = 2,
+    OLED_ROTATION_270 = 3, // OLED_ROTATION_90 | OLED_ROTATION_180
+} oled_rotation_t;
+
+// Initialize the OLED display, rotating the rendered output based on the define passed in.
+// Returns true if the OLED was initialized successfully
+bool oled_init(oled_rotation_t rotation);
+
+// Called at the start of oled_init, weak function overridable by the user
+// rotation - the value passed into oled_init
+// Return new oled_rotation_t if you want to override default rotation
+oled_rotation_t oled_init_user(oled_rotation_t rotation);
+
+// Clears the display buffer, resets cursor position to 0, and sets the buffer to dirty for rendering
+void oled_clear(void);
+
+// Renders the dirty chunks of the buffer to OLED display
+void oled_render(void);
+
+// Moves cursor to character position indicated by column and line, wraps if out of bounds
+// Max column denoted by 'oled_max_chars()' and max lines by 'oled_max_lines()' functions
+void oled_set_cursor(uint8_t col, uint8_t line);
+
+// Advances the cursor to the next page, writing ' ' if true
+// Wraps to the begining when out of bounds
+void oled_advance_page(bool clearPageRemainder);
+
+// Moves the cursor forward 1 character length
+// Advance page if there is not enough room for the next character
+// Wraps to the begining when out of bounds
+void oled_advance_char(void);
+
+// Writes a single character to the buffer at current cursor position
+// Advances the cursor while writing, inverts the pixels if true
+// Main handler that writes character data to the display buffer
+void oled_write_char(const char data, bool invert);
+
+// Writes a string to the buffer at current cursor position
+// Advances the cursor while writing, inverts the pixels if true
+void oled_write(const char *data, bool invert);
+
+// Writes a string to the buffer at current cursor position
+// Advances the cursor while writing, inverts the pixels if true
+// Advances the cursor to the next page, wiring ' ' to the remainder of the current page
+void oled_write_ln(const char *data, bool invert);
+
+// Writes a PROGMEM string to the buffer at current cursor position
+// Advances the cursor while writing, inverts the pixels if true
+// Remapped to call 'void oled_write(const char *data, bool invert);' on ARM
+void oled_write_P(const char *data, bool invert);
+
+// Writes a PROGMEM string to the buffer at current cursor position
+// Advances the cursor while writing, inverts the pixels if true
+// Advances the cursor to the next page, wiring ' ' to the remainder of the current page
+// Remapped to call 'void oled_write_ln(const char *data, bool invert);' on ARM
+void oled_write_ln_P(const char *data, bool invert);
+
+// Can be used to manually turn on the screen if it is off
+// Returns true if the screen was on or turns on
+bool oled_on(void);
+
+// Can be used to manually turn off the screen if it is on
+// Returns true if the screen was off or turns off
+bool oled_off(void);
+
+// Basically it's oled_render, but with timeout management and oled_task_user calling!
+void oled_task(void);
+
+// Called at the start of oled_task, weak function overridable by the user
+void oled_task_user(void);
+
+// Scrolls the entire display right
+// Returns true if the screen was scrolling or starts scrolling
+// NOTE: display contents cannot be changed while scrolling
+bool oled_scroll_right(void);
+
+// Scrolls the entire display left
+// Returns true if the screen was scrolling or starts scrolling
+// NOTE: display contents cannot be changed while scrolling
+bool oled_scroll_left(void);
+
+// Turns off display scrolling
+// Returns true if the screen was not scrolling or stops scrolling
+bool oled_scroll_off(void);
+
+// Returns the maximum number of characters that will fit on a line
+uint8_t oled_max_chars(void);
+
+// Returns the maximum number of lines that will fit on the OLED
+uint8_t oled_max_lines(void);
+```
+
+## SSD1306.h driver conversion guide
+
+|Old API                    |Recommended New API                |
+|---------------------------|-----------------------------------|
+|`struct CharacterMatrix`   |*removed - delete all references*  |
+|`iota_gfx_init`            |`oled_init`                        |
+|`iota_gfx_on`              |`oled_on`                          |
+|`iota_gfx_off`             |`oled_off`                         |
+|`iota_gfx_flush`           |`oled_render`                      |
+|`iota_gfx_write_char`      |`oled_write_char`                  |
+|`iota_gfx_write`           |`oled_write`                       |
+|`iota_gfx_write_P`         |`oled_write_P`                     |
+|`iota_gfx_clear_screen`    |`oled_clear`                       |
+|`matrix_clear`             |*removed - delete all references*  |
+|`matrix_write_char_inner`  |`oled_write_char`                  |
+|`matrix_write_char`        |`oled_write_char`                  |
+|`matrix_write`             |`oled_write`                       |
+|`matrix_write_ln`          |`oled_write_ln`                    |
+|`matrix_write_P`           |`oled_write_P`                     |
+|`matrix_write_ln_P`        |`oled_write_ln_P`                  |
+|`matrix_render`            |`oled_render`                      |
+|`iota_gfx_task`            |`oled_task`                        |
+|`iota_gfx_task_user`       |`oled_task_user`                   |

docs/feature_rgblight.md

@@ -75,6 +75,7 @@ Your RGB lighting can be configured by placing these `#define`s in your `config.
 |`RGBLIGHT_VAL_STEP`  |`17`         |The number of steps to increment the brightness by                           |
 |`RGBLIGHT_LIMIT_VAL` |`255`        |The maximum brightness level                                                 |
 |`RGBLIGHT_SLEEP`     |*Not defined*|If defined, the RGB lighting will be switched off when the host goes to sleep|
+|`RGBLIGHT_SPLIT`     |*Not defined*|If defined, synchronization functionality for split keyboards is added|
 
 ## Animations
 
@@ -113,7 +114,7 @@ The following options can be used to tweak the various animations:
 |`RGBLIGHT_EFFECT_RGB_TEST`          |*Not defined*|If defined, enable RGB test animation mode.                                          |
 |`RGBLIGHT_EFFECT_ALTERNATING`       |*Not defined*|If defined, enable alternating animation mode.                                       |
 |`RGBLIGHT_ANIMATIONS`               |*Not defined*|If defined, enables all additional animation modes                                   |
-|`RGBLIGHT_EFFECT_BREATHE_CENTER`    |`1.85`       |Used to calculate the curve for the breathing animation. Valid values are 1.0 to 2.7 |
+|`RGBLIGHT_EFFECT_BREATHE_CENTER`    |*Not defined*|If defined, used to calculate the curve for the breathing animation. Valid values are 1.0 to 2.7 |
 |`RGBLIGHT_EFFECT_BREATHE_MAX`       |`255`        |The maximum brightness for the breathing mode. Valid values are 1 to 255             |
 |`RGBLIGHT_EFFECT_SNAKE_LENGTH`      |`4`          |The number of LEDs to light up for the "Snake" animation                             |
 |`RGBLIGHT_EFFECT_KNIGHT_LENGTH`     |`3`          |The number of LEDs to light up for the "Knight" animation                            |
@@ -144,7 +145,7 @@ const uint8_t RGBLED_SNAKE_INTERVALS[] PROGMEM = {100, 50, 20};
 const uint8_t RGBLED_KNIGHT_INTERVALS[] PROGMEM = {127, 63, 31};
 
 // These control which hues are selected for each of the "Static gradient" modes
-const uint16_t RGBLED_GRADIENT_RANGES[] PROGMEM = {360, 240, 180, 120, 90};
+const uint8_t RGBLED_GRADIENT_RANGES[] PROGMEM = {255, 170, 127, 85, 64};
 ```
 
 ## Functions
@@ -188,22 +189,60 @@ If you need to change your RGB lighting in code, for example in a macro to chang
 |`rgblight_increase_val_noeeprom()`          |Increase the value for all LEDs. This wraps around at maximum value (not written to EEPROM)                                                                   |
 |`rgblight_decrease_val()`                   |Decrease the value for all LEDs. This wraps around at minimum value                                                                                           |
 |`rgblight_decrease_val_noeeprom()`          |Decrease the value for all LEDs. This wraps around at minimum value (not written to EEPROM)                                                                   |
+|`rgblight_set_clipping_range(pos, num)`     |Set clipping Range                                                                                                                                            |
+
+## Colors
+
+These are shorthands to popular colors. The `RGB` ones can be passed to the `setrgb` functions, while the `HSV` ones to the `sethsv` functions.
+
+|RGB                |HSV                |
+|-------------------|-------------------|
+|`RGB_WHITE`        |`HSV_WHITE`        |
+|`RGB_RED`          |`HSV_RED`          |
+|`RGB_CORAL`        |`HSV_CORAL`        |
+|`RGB_ORANGE`       |`HSV_ORANGE`       |
+|`RGB_GOLDENROD`    |`HSV_GOLDENROD`    |
+|`RGB_GOLD`         |`HSV_GOLD`         |
+|`RGB_YELLOW`       |`HSV_YELLOW`       |
+|`RGB_CHARTREUSE`   |`HSV_CHARTREUSE`   |
+|`RGB_GREEN`        |`HSV_GREEN`        |
+|`RGB_SPRINGGREEN`  |`HSV_SPRINGGREEN`  |
+|`RGB_TURQUOISE`    |`HSV_TURQUOISE`    |
+|`RGB_TEAL`         |`HSV_TEAL`         |
+|`RGB_CYAN`         |`HSV_CYAN`         |
+|`RGB_AZURE`        |`HSV_AZURE`        |
+|`RGB_BLUE`         |`HSV_BLUE`         |
+|`RGB_PURPLE`       |`HSV_PURPLE`       |
+|`RGB_MAGENTA`      |`HSV_MAGENTA`      |
+|`RGB_PINK`         |`HSV_PINK`         |
+
+```c
+rgblight_setrgb(RGB_ORANGE);
+rgblight_sethsv_noeeprom(HSV_GREEN);
+rgblight_setrgb_at(RGB_GOLD, 3);
+rgblight_sethsv_range(HSV_WHITE, 0, 6);
+```
+
+These are defined in [`rgblight_list.h`](https://github.com/qmk/qmk_firmware/blob/master/quantum/rgblight_list.h). Feel free to add to this list!
 
-Additionally, [`rgblight_list.h`](https://github.com/qmk/qmk_firmware/blob/master/quantum/rgblight_list.h) defines several predefined shortcuts for various colors. Feel free to add to this list!
 
 ## Changing the order of the LEDs
 
 If you want to make the logical order of LEDs different from the electrical connection order, you can do this by defining the `RGBLIGHT_LED_MAP` macro in your `config.h`.
 
+Normally, the contents of the LED buffer are output to the LEDs in the same order.
+<img src="https://user-images.githubusercontent.com/2170248/55743718-01866c80-5a6e-11e9-8134-25419928327a.JPG" alt="simple dicrect" width="50%"/>
+
 By defining `RGBLIGHT_LED_MAP` as in the example below, you can specify the LED with addressing in reverse order of the electrical connection order.
 
 ```c
 // config.h
 
-#define RGBLED_NUM 10
-#define RGBLIGHT_LED_MAP { 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 }
+#define RGBLED_NUM 4
+#define RGBLIGHT_LED_MAP { 3, 2, 1, 0 }
 
 ```
+<img src="https://user-images.githubusercontent.com/2170248/55743725-08ad7a80-5a6e-11e9-83ed-126a2b0209fc.JPG" alt="simple mapped" width="50%"/>
 
 For keyboards that use the RGB LEDs as a backlight for each key, you can also define it as in the example below.
 
@@ -237,7 +276,28 @@ For keyboards that use the RGB LEDs as a backlight for each key, you can also de
   29, 24, 19, 14,  9,  4 )
 
 ```
+## Clipping Range
 
-## Hardware Modification
+Using the `rgblight_set_clipping_range()` function, you can prepare more buffers than the actual number of LEDs, and output some of the buffers to the LEDs. This is useful if you want the split keyboard to treat left and right LEDs as logically contiguous.
+
+You can set the Clipping Range by executing the following code.
+
+```c
+// some soruce
+  rgblight_set_clipping_range(3, 4);
+```
+<img src="https://user-images.githubusercontent.com/2170248/55743785-2bd82a00-5a6e-11e9-9d4b-1b4ffaf4932b.JPG" alt="clip direct" width="70%"/>
+
+In addition to setting the Clipping Range, you can use `RGBLIGHT_LED_MAP` together.
+
+```c
+// config.h
+#define RGBLED_NUM 8
+#define RGBLIGHT_LED_MAP { 7, 6, 5, 4, 3, 2, 1, 0 }
+
+// some soruce
+  rgblight_set_clipping_range(3, 4);
+```
+<img src="https://user-images.githubusercontent.com/2170248/55743747-119e4c00-5a6e-11e9-91e5-013203ffae8a.JPG" alt="clip mapped" width="70%"/>
 
 If your keyboard lacks onboard underglow LEDs, you may often be able to solder on an RGB LED strip yourself. You will need to find an unused pin to wire to the data pin of your LED strip. Some keyboards may break out unused pins from the MCU to make soldering easier. The other two pins, VCC and GND, must also be connected to the appropriate power pins.

docs/feature_space_cadet.md

@@ -0,0 +1,59 @@
+# Space Cadet: The Future, Built In
+
+Steve Losh described the [Space Cadet Shift](http://stevelosh.com/blog/2012/10/a-modern-space-cadet/) quite well. Essentially, when you tap Left Shift on its own, you get an opening parenthesis; tap Right Shift on its own and you get the closing one. When held, the Shift keys function as normal. Yes, it's as cool as it sounds, and now even cooler supporting Control and Alt as well!
+
+## Usage
+
+Firstly, in your keymap, do one of the following:
+- Replace the Left Shift key with `KC_LSPO` (Left Shift, Parenthesis Open), and Right Shift with `KC_RSPC` (Right Shift, Parenthesis Close).
+- Replace the Left Control key with `KC_LCPO` (Left Control, Parenthesis Open), and Right Control with `KC_RCPC` (Right Control, Parenthesis Close).
+- Replace the Left Alt key with `KC_LAPO` (Left Alt, Parenthesis Open), and Right Alt with `KC_RAPC` (Right Alt, Parenthesis Close).
+- Replace any Shift key in your keymap with `KC_SFTENT` (Right Shift, Enter).
+
+## Keycodes
+
+|Keycode    |Description                                |
+|-----------|-------------------------------------------|
+|`KC_LSPO`  |Left Shift when held, `(` when tapped      |
+|`KC_RSPC`  |Right Shift when held, `)` when tapped     |
+|`KC_LCPO`  |Left Control when held, `(` when tapped    |
+|`KC_RCPC`  |Right Control when held, `)` when tapped   |
+|`KC_LAPO`  |Left Alt when held, `(` when tapped        |
+|`KC_RAPC`  |Right Alt when held, `)` when tapped       |
+|`KC_SFTENT`|Right Shift when held, `Enter` when tapped |
+
+## Caveats
+
+Space Cadet's functionality can conflict with the default Command functionality when both Shift keys are held at the same time. See the [Command feature](feature_command.md) for info on how to change it, or make sure that Command is disabled in your `rules.mk` with:
+
+```make
+COMMAND_ENABLE = no
+```
+
+## Configuration
+
+By default Space Cadet assumes a US ANSI layout, but if your layout uses different keys for parentheses, you can redefine them in your `config.h`. In addition, you can redefine the modifier to send on tap, or even send no modifier at all. The new configuration defines bundle all options up into a single define of 3 key codes in this order: the `Modifier` when held or when used with other keys, the `Tap Modifer` sent when tapped (no modifier if `KC_TRNS`), finally the `Keycode` sent when tapped. Now keep in mind, mods from other keys will still apply to the `Keycode` if say `KC_RSFT` is held while tapping `KC_LSPO` key with `KC_TRNS` as the `Tap Modifer`.
+
+|Define          |Default                        |Description                                                                      |
+|----------------|-------------------------------|---------------------------------------------------------------------------------|
+|`LSPO_KEYS`     |`KC_LSFT, LSPO_MOD, LSPO_KEY`  |Send `KC_LSFT` when held, the mod and  key defined by `LSPO_MOD` and `LSPO_KEY`. |
+|`RSPC_KEYS`     |`KC_RSFT, RSPC_MOD, RSPC_KEY`  |Send `KC_RSFT` when held, the mod and  key defined by `RSPC_MOD` and `RSPC_KEY`. |
+|`LCPO_KEYS`     |`KC_LCTL, KC_LCTL, KC_9`       |Send `KC_LCTL` when held, the mod `KC_LCTL` with the key `KC_9` when tapped.     |
+|`RCPC_KEYS`     |`KC_RCTL, KC_RCTL, KC_0`       |Send `KC_RCTL` when held, the mod `KC_RCTL` with the key `KC_0` when tapped.     |
+|`LAPO_KEYS`     |`KC_LALT, KC_LALT, KC_9`       |Send `KC_LALT` when held, the mod `KC_LALT` with the key `KC_9` when tapped.     |
+|`RAPC_KEYS`     |`KC_RALT, KC_RALT, KC_0`       |Send `KC_RALT` when held, the mod `KC_RALT` with the key `KC_0` when tapped.     |
+|`SFTENT_KEYS`   |`KC_RSFT, KC_TRNS, SFTENT_KEY` |Send `KC_RSFT` when held, no mod with the key `SFTENT_KEY` when tapped.          |
+
+
+## Obsolete Configuration
+
+These defines are used in the above defines internally to support backwards compatibility, so you may continue to use them, however the above defines open up a larger range of flexibility than before. As an example, say you want to not send any modifier when you tap just `KC_LSPO`, with the old defines you had an all or nothing choice of using the `DISABLE_SPACE_CADET_MODIFIER` define. Now you can define that key as: `#define LSPO_KEYS KC_LSFT, KC_TRNS, KC_9`. This tells the system to set Left Shift if held or used with other keys, then on tap send no modifier (transparent) with the `KC_9`.
+
+|Define                        |Default      |Description                                                       |
+|------------------------------|-------------|------------------------------------------------------------------|
+|`LSPO_KEY`                    |`KC_9`       |The keycode to send when Left Shift is tapped                     |
+|`RSPC_KEY`                    |`KC_0`       |The keycode to send when Right Shift is tapped                    |
+|`LSPO_MOD`                    |`KC_LSFT`    |The modifier to apply to `LSPO_KEY`                               |
+|`RSPC_MOD`                    |`KC_RSFT`    |The modifier to apply to `RSPC_KEY`                               |
+|`SFTENT_KEY`                  |`KC_ENT`     |The keycode to send when the Shift key is tapped                  |
+|`DISABLE_SPACE_CADET_MODIFIER`|*Not defined*|If defined, prevent the Space Cadet from applying a modifier      |

docs/feature_space_cadet_shift.md

@@ -1,37 +0,0 @@
-# Space Cadet Shift: The Future, Built In
-
-Steve Losh described the [Space Cadet Shift](http://stevelosh.com/blog/2012/10/a-modern-space-cadet/) quite well. Essentially, when you tap Left Shift on its own, you get an opening parenthesis; tap Right Shift on its own and you get the closing one. When held, the Shift keys function as normal. Yes, it's as cool as it sounds.
-
-## Usage
-
-Replace the Left Shift key in your keymap with `KC_LSPO` (Left Shift, Parenthesis Open), and Right Shift with `KC_RSPC` (Right Shift, Parenthesis Close).
-
-## Keycodes
-
-|Keycode  |Description                           |
-|---------|--------------------------------------|
-|`KC_LSPO`|Left Shift when held, `(` when tapped |
-|`KC_RSPC`|Right Shift when held, `)` when tapped|
-
-## Caveats
-
-Space Cadet's functionality can conflict with the default Command functionality when both Shift keys are held at the same time. Make sure that Command is disabled in your `rules.mk` with:
-
-```make
-COMMAND_ENABLE = no
-```
-
-## Configuration
-
-By default Space Cadet assumes a US ANSI layout, but if your layout uses different keys for parentheses, you can redefine them in your `config.h`.
-You can also disable the rollover, allowing you to use the opposite Shift key to cancel the Space Cadet state in the event of an erroneous press, instead of emitting a pair of parentheses when the keys are released.
-Also, by default, the Space Cadet applies modifiers LSPO_MOD and RSPC_MOD to keys defined by LSPO_KEY and RSPC_KEY. You can override this behavior by redefining those variables in your `config.h`. You can also prevent the Space Cadet to apply a modifier by defining DISABLE_SPACE_CADET_MODIFIER in your `config.h`.
-
-|Define                        |Default      |Description                                                                     |
-|------------------------------|-------------|--------------------------------------------------------------------------------|
-|`LSPO_KEY`                    |`KC_9`       |The keycode to send when Left Shift is tapped                                   |
-|`RSPC_KEY`                    |`KC_0`       |The keycode to send when Right Shift is tapped                                  |
-|`LSPO_MOD`                    |`KC_LSFT`    |The keycode to send when Left Shift is tapped                                   |
-|`RSPC_MOD`                    |`KC_RSFT`    |The keycode to send when Right Shift is tapped                                  |
-|`DISABLE_SPACE_CADET_ROLLOVER`|*Not defined*|If defined, use the opposite Shift key to cancel Space Cadet                    |
-|`DISABLE_SPACE_CADET_MODIFIER`|*Not defined*|If defined, prevent the Space Cadet to apply a modifier to LSPO_KEY and RSPC_KEY|

docs/feature_space_cadet_shift_enter.md

@@ -1,31 +0,0 @@
-# Space Cadet Shift Enter
-
-Based on the [Space Cadet Shift](feature_space_cadet_shift.md) feature. Tap the Shift key on its own, and it behaves like Enter. When held, the Shift functions as normal.
-
-## Usage
-
-Replace any Shift key in your keymap with `KC_SFTENT` (Shift, Enter), and you're done.
-
-## Keycodes
-
-|Keycode    |Description                             |
-|-----------|----------------------------------------|
-|`KC_SFTENT`|Right Shift when held, Enter when tapped|
-
-## Caveats
-
-As with Space Cadet Shift, this feature may conflict with Command, so it should be disabled in your `rules.mk` with:
-
-```make
-COMMAND_ENABLE = no
-```
-
-This feature also uses the same timers as Space Cadet Shift, so using them in tandem may produce strange results.
-
-## Configuration
-
-By default Space Cadet assumes a US ANSI layout, but if you'd like to use a different key for Enter, you can redefine it in your `config.h`:
-
-|Define      |Default |Description                                     |
-|------------|--------|------------------------------------------------|
-|`SFTENT_KEY`|`KC_ENT`|The keycode to send when the Shift key is tapped|

docs/feature_unicode.md

@@ -4,11 +4,11 @@ There are three Unicode keymap definition methods available in QMK:
 
 ## `UNICODE_ENABLE`
 
-Supports Unicode up to `0x7FFF`. This covers characters for most modern languages, as well as symbols, but it doesn't cover emoji. The keycode function is `UC(c)` in the keymap file, where _c_ is the code point's number (preferably hexadecimal, up to 4 digits long). For example: `UC(0x45B)`, `UC(0x30C4)`.
+Supports Unicode up to `0x7FFF`. This covers characters for most modern languages, as well as symbols, but it doesn't cover emoji. The keycode function is `UC(c)` in the keymap, where _c_ is the code point's number (preferably hexadecimal, up to 4 digits long). For example: `UC(0x45B)`, `UC(0x30C4)`.
 
 ## `UNICODEMAP_ENABLE`
 
-Supports Unicode up to `0x10FFFF` (all possible code points). You need to maintain a separate mapping table `const uint32_t PROGMEM unicode_map[] = {...}` in your keymap file. The keycode function is `X(i)`, where _i_ is an array index into the mapping table. The table may contain at most 1024 entries.
+Supports Unicode up to `0x10FFFF` (all possible code points). You need to maintain a separate mapping table `const uint32_t PROGMEM unicode_map[] = {...}` in your keymap file. The keycode function is `X(i)`, where _i_ is an array index into the mapping table. The table may contain at most 16384 entries.
 
 You may want to have an enum to make referencing easier. So, you could add something like this to your keymap file:
 
@@ -26,13 +26,21 @@ const uint32_t PROGMEM unicode_map[] = {
 };
 ```
 
-Then you can use `X(BANG)` etc. in your keymap.
+Then you can use `X(BANG)`, `X(SNEK)` etc. in your keymap.
+
+### Lower and Upper Case
+
+Characters often come in lower and upper case pairs, for example: å, Å. To make inputting these characters easier, you can use `XP(i, j)` in your keymap, where _i_ and _j_ are the mapping table indices of the lower and upper case character, respectively. If you're holding down Shift or have Caps Lock turned on when you press the key, the second (upper case) character will be inserted; otherwise, the first (lower case) version will appear.
+
+This is most useful when creating a keymap for an international layout with special characters. Instead of having to put the lower and upper case versions of a character on separate keys, you can have them both on the same key by using `XP`. This blends Unicode keys in with regular alphas.
+
+Due to keycode size constraints, _i_ and _j_ can each only refer to one of the first 128 characters in your `unicode_map`. In other words, 0 ≤ _i_ ≤ 127 and 0 ≤ _j_ ≤ 127. This is enough for most use cases, but if you'd like to customize the index calculation, you can override the [`unicodemap_index()`](https://github.com/qmk/qmk_firmware/blob/71f640d47ee12c862c798e1f56392853c7b1c1a8/quantum/process_keycode/process_unicodemap.c#L40) function. This also allows you to, say, check Ctrl instead of Shift/Caps.
 
 ## `UCIS_ENABLE`
 
-Supports Unicode up to `0x10FFFF` (all possible code points). As with `UNICODEMAP`, you need to maintain a mapping table in your keymap file. However, there are no built-in keycodes for this feature — you will have to add a keycode or function that calls `qk_ucis_start()`. Once this function's been called, you can type the corresponding mnemonic for your character, then hit Space or Enter to complete it, or Esc to cancel. If the mnemonic matches an entry in your table, the typed text will automatically be erased and the corresponding Unicode character inserted.
+Supports Unicode up to `0x10FFFF` (all possible code points). As with `UNICODEMAP`, you need to maintain a mapping table in your keymap file. However, there are no built-in keycodes for this feature — you have to add a keycode or function that calls `qk_ucis_start()`. Once this function has been called, you can type the corresponding mnemonic for your character, then hit Space or Enter to complete it, or Esc to cancel. If the mnemonic matches an entry in your table, the typed text will automatically be erased and the corresponding Unicode character inserted.
 
-For instance, you would define a table like this in your keymap file:
+For instance, you could define a table like this in your keymap file:
 
 ```c
 const qk_ucis_symbol_t ucis_symbol_table[] = UCIS_TABLE(
@@ -42,7 +50,7 @@ const qk_ucis_symbol_t ucis_symbol_table[] = UCIS_TABLE(
 );
 ```
 
-You call `qk_ucis_start()`, then type "rofl" and hit Enter. QMK should erase the "rofl" text and input the laughing emoji.
+To use it, call `qk_ucis_start()`, then type "rofl" and hit Enter. QMK should erase the "rofl" text and insert the laughing emoji.
 
 ### Customization
 
@@ -60,28 +68,29 @@ Unicode input in QMK works by inputting a sequence of characters to the OS, sort
 
 The following input modes are available:
 
-* **`UC_OSX`**: Mac OS X built-in Unicode hex input. Supports code points up to `0xFFFF` (`0x10FFFF` with `UNICODEMAP`).
+* **`UC_OSX`**: macOS built-in Unicode hex input. Supports code points up to `0xFFFF` (`0x10FFFF` with `UNICODEMAP`).
 
   To enable, go to _System Preferences > Keyboard > Input Sources_, add _Unicode Hex Input_ to the list (it's under _Other_), then activate it from the input dropdown in the Menu Bar.
-  By default, this mode uses the left Option key (`KC_LALT`), but this can be changed by defining [`UNICODE_OSX_KEY`](#input-key-configuration) with another keycode.
+  By default, this mode uses the left Option key (`KC_LALT`) for Unicode input, but this can be changed by defining [`UNICODE_KEY_OSX`](#input-key-configuration) with another keycode.
 
-  **Note:** Using the _Unicode Hex Input_ input source may disable some Option based shortcuts, such as: Option + Left Arrow (`moveWordLeftAndModifySelection`) and Option + Right Arrow  (`moveWordRightAndModifySelection`).
+  !> Using the _Unicode Hex Input_ input source may disable some Option based shortcuts, such as Option + Left Arrow and Option + Right Arrow.
 
 * **`UC_LNX`**: Linux built-in IBus Unicode input. Supports code points up to `0x10FFFF` (all possible code points).
 
   Enabled by default and works almost anywhere on IBus-enabled distros. Without IBus, this mode works under GTK apps, but rarely anywhere else.
+  By default, this mode uses Ctrl+Shift+U (`LCTL(LSFT(KC_U))`) to start Unicode input, but this can be changed by defining [`UNICODE_KEY_LNX`](#input-key-configuration) with another keycode. This might be required for IBus versions ≥1.5.15, where Ctrl+Shift+U behavior is consolidated into Ctrl+Shift+E.
 
 * **`UC_WIN`**: _(not recommended)_ Windows built-in hex numpad Unicode input. Supports code points up to `0xFFFF`.
 
-  To enable, create a registry key under `HKEY_CURRENT_USER\Control Panel\Input Method\EnableHexNumpad` of type `REG_SZ` called `EnableHexNumpad` and set its value to `1`. This can be done from the Command Prompt by running `reg add "HKCU\Control Panel\Input Method" -v EnableHexNumpad -t REG_SZ -d 1` with administrator privileges. Afterwards, reboot.
+  To enable, create a registry key under `HKEY_CURRENT_USER\Control Panel\Input Method\EnableHexNumpad` of type `REG_SZ` called `EnableHexNumpad` and set its value to `1`. This can be done from the Command Prompt by running `reg add "HKCU\Control Panel\Input Method" -v EnableHexNumpad -t REG_SZ -d 1` with administrator privileges. Reboot afterwards.
   This mode is not recommended because of reliability and compatibility issues; use the `UC_WINC` mode instead.
 
 * **`UC_BSD`**: _(non implemented)_ Unicode input under BSD. Not implemented at this time. If you're a BSD user and want to help add support for it, please [open an issue on GitHub](https://github.com/qmk/qmk_firmware/issues).
 
-* **`UC_WINC`**: Windows Unicode input using [WinCompose](https://github.com/samhocevar/wincompose). As of v0.8.2, supports code points up to `0xFFFFF` (all currently assigned code points).
+* **`UC_WINC`**: Windows Unicode input using [WinCompose](https://github.com/samhocevar/wincompose). As of v0.9.0, supports code points up to `0x10FFFF` (all possible code points).
 
   To enable, install the [latest release](https://github.com/samhocevar/wincompose/releases/latest). Once installed, WinCompose will automatically run on startup. Works reliably under all version of Windows supported by the app.
-  By default, this mode uses the right Alt key (`KC_RALT`), but this can be changed in the WinCompose settings and by defining [`UNICODE_WINC_KEY`](#input-key-configuration) with another keycode.
+  By default, this mode uses right Alt (`KC_RALT`) as the Compose key, but this can be changed in the WinCompose settings and by defining [`UNICODE_KEY_WINC`](#input-key-configuration) with another keycode.
 
 ### Switching Input Modes
 
@@ -89,17 +98,17 @@ There are two ways to set the input mode for Unicode: by keycode or by function.
 
 You can switch the input mode at any time by using one of the following keycodes. The easiest way is to add the ones you use to your keymap.
 
-|Keycode                |Alias    |Input mode   |Description                              |
-|-----------------------|---------|-------------|-----------------------------------------|
-|`UNICODE_MODE_FORWARD` |`UC_MOD` |             |Cycles forwards through the available modes. [(Disabled by default)](#input-method-cycling)|
-|`UNICODE_MODE_REVERSE` |`UC_RMOD`|             |Cycles forwards through the available modes. [(Disabled by default)](#input-method-cycling)|
-|`UNICODE_MODE_OSX`     |`UC_M_OS`|`UC_OSX`     |Switch to Mac OS X input.                |
-|`UNICODE_MODE_LNX`     |`UC_M_LN`|`UC_LNX`     |Switch to Linux input.                   |
-|`UNICODE_MODE_WIN`     |`UC_M_WI`|`UC_WIN`     |Switch to Windows input.                 |
-|`UNICODE_MODE_BSD`     |`UC_M_BS`|`UC_BSD`     |Switch to BSD input (not implemented).   |
-|`UNICODE_MODE_WINC`    |`UC_M_WC`|`UC_WINC`    |Switch to Windows input using WinCompose.|
+|Keycode               |Alias    |Input Mode  |Description                                                   |
+|----------------------|---------|------------|--------------------------------------------------------------|
+|`UNICODE_MODE_FORWARD`|`UC_MOD` |Next in list|[Cycle](#input-mode-cycling) through selected modes           |
+|`UNICODE_MODE_REVERSE`|`UC_RMOD`|Prev in list|[Cycle](#input-mode-cycling) through selected modes in reverse|
+|`UNICODE_MODE_OSX`    |`UC_M_OS`|`UC_OSX`    |Switch to macOS input                                         |
+|`UNICODE_MODE_LNX`    |`UC_M_LN`|`UC_LNX`    |Switch to Linux input                                         |
+|`UNICODE_MODE_WIN`    |`UC_M_WI`|`UC_WIN`    |Switch to Windows input                                       |
+|`UNICODE_MODE_BSD`    |`UC_M_BS`|`UC_BSD`    |Switch to BSD input (not implemented)                         |
+|`UNICODE_MODE_WINC`   |`UC_M_WC`|`UC_WINC`   |Switch to Windows input using WinCompose                      |
 
-You can also switch the input mode by calling `set_unicode_input_mode(x)` in your code, where _x_ is one of the above input mode constants (e.g. `UC_LNX`). Since the function only needs to be called once, it's recommended that you do it in `eeconfig_init_user` (or a similar function). For example:
+You can also switch the input mode by calling `set_unicode_input_mode(x)` in your code, where _x_ is one of the above input mode constants (e.g. `UC_LNX`). Since the function only needs to be called once, it's recommended that you do it in `eeconfig_init_user()` (or a similar function). For example:
 
 ```c
 void eeconfig_init_user(void) {
@@ -123,35 +132,45 @@ For instance, you can add these definitions to your `config.h` file:
 
 ### Additional Customization
 
-Because Unicode is such a large and variable feature, there are a number of options that you can customize to work better on your system.
+Because Unicode is a large and versatile feature, there are a number of options you can customize to make it work better on your system.
 
-#### Start and Finish input functions
+#### Start and Finish Input Functions
 
 The functions for starting and finishing Unicode input on your platform can be overridden locally. Possible uses include customizing input mode behavior if you don't use the default keys, or adding extra visual/audio feedback to Unicode input.
 
-* `void unicode_input_start(void)` – This sends the initial sequence that tells your platform to enter Unicode input mode. For example, it presses Ctrl+Shift+U on Linux and holds the Option key on Mac.
+* `void unicode_input_start(void)` – This sends the initial sequence that tells your platform to enter Unicode input mode. For example, it presses Ctrl+Shift+U on Linux and holds the Option key on macOS.
 * `void unicode_input_finish(void)` – This is called to exit Unicode input mode, for example by pressing Space or releasing the Option key.
 
 You can find the default implementations of these functions in [`process_unicode_common.c`](https://github.com/qmk/qmk_firmware/blob/master/quantum/process_keycode/process_unicode_common.c).
 
-
 #### Input Key Configuration
 
-Additionally, you can customize the keys used to trigger the unicode input for macOS and WinCompose by adding defines to your `config.h`
+You can customize the keys used to trigger Unicode input for macOS, Linux and WinCompose by adding corresponding defines to your `config.h`. The default values match the platforms' default settings, so you shouldn't need to change this unless Unicode input isn't working, or you want to use a different key (e.g. in order to free up left or right Alt).
+
+|Define            |Type      |Default           |Example                                    |
+|------------------|----------|------------------|-------------------------------------------|
+|`UNICODE_KEY_OSX` |`uint8_t` |`KC_LALT`         |`#define UNICODE_KEY_OSX  KC_RALT`         |
+|`UNICODE_KEY_LNX` |`uint16_t`|`LCTL(LSFT(KC_U))`|`#define UNICODE_KEY_LNX  LCTL(LSFT(KC_E))`|
+|`UNICODE_KEY_WINC`|`uint8_t` |`KC_RALT`         |`#define UNICODE_KEY_WINC KC_RGUI`         |
+
+#### Input Mode Cycling
+
+You can choose which input modes are available for cycling through. By default, this is disabled. If you want to enable it, limiting it to just the modes you use makes sense. Note that the values in the list are comma-delimited.
 
 ```c
-#define UNICODE_OSX_KEY  KC_LALT
-#define UNICODE_WINC_KEY KC_RALT
+#define UNICODE_SELECTED_MODES UC_OSX, UC_LNX, UC_WIN, UC_WINC
 ```
 
-#### Input Method Cycling
+You can cycle through the selected modes by using the `UC_MOD`/`UC_RMOD` keycodes, or by calling `cycle_unicode_input_mode(offset)` in your code (`offset` is how many modes to move forward by, so +1 corresponds to `UC_MOD`).
 
-Also, you can choose which input methods are availble for cycling through.  By default, this is disabled. But if you want to enabled it, then limiting it to just those modes makes sense.  Note that `UNICODE_SELECTED_MODES` define is comma delimited.
+By default, when the keyboard boots, it will initialize the input mode to the last one you used. You can disable this and make it start with the first mode in the list every time by adding the following to your `config.h`:
 
 ```c
-#define UNICODE_SELECTED_MODES UC_OSX, UC_LNX, UC_WIN, UC_BSD, UC_WINC
+#define UNICODE_CYCLE_PERSIST false
 ```
 
+!> Using `UNICODE_SELECTED_MODES` means you don't have to initially set the input mode in `matrix_init_user()` (or a similar function); the Unicode system will do that for you on startup. This has the added benefit of avoiding unnecessary writes to EEPROM.
+
 ## `send_unicode_hex_string`
 
 To type multiple characters for things like (ノಠ痊ಠ)ノ彡┻━┻, you can use `send_unicode_hex_string()` much like `SEND_STRING()` except you would use hex values separate by spaces.

docs/getting_started_build_tools.md

@@ -2,11 +2,11 @@
 
 This page describes setting up the build environment for QMK. These instructions cover AVR processors (such as the atmega32u4).
 
-After cloning the repo of QMK run `make git-submodule` once to download 3rd party libraries like ChibiOS.
-
 <!-- FIXME: We should have ARM instructions somewhere. -->
 
-Note: If it is your first time here, Check out the "Complete Newbs guide" instead
+**Note:** If this is your first time here, check out the [Complete Newbs Guide](newbs.md) page.
+
+Before continuing, double check that your submodules (third-party libraries) are up to date by running `make git-submodule`.
 
 ## Linux
 

docs/hand_wire.md

@@ -198,15 +198,17 @@ From here, you should have a working keyboard once you program a firmware. Befor
 
 To start out, download [the firmware](https://github.com/qmk/qmk_firmware/) - we'll be using my (Jack's) fork of TMK called QMK/Quantum. We'll be doing a lot from the Terminal/command prompt, so get that open, along with a decent text editor like [Sublime Text](http://www.sublimetext.com/) (paid) or [Visual Studio Code](https://code.visualstudio.com) (free).
 
-The first thing we're going to do is create a new project using the script in the root directory of the firmware. In your terminal, run this command with `<project_name>` replaced by the name of your project - it'll need to be different from any other project in the `keyboards/` folder:
+The first thing we're going to do is create a new keyboard. In your terminal, run this command, which will ask you some questions and generate a basic keyboard project:
 
 ```
-    util/new_project.sh <project_name>
+./util/new_keyboard.sh
 ```
 
 You'll want to navigate to the `keyboards/<project_name>/` folder by typing, like the print-out from the script specifies:
 
-    cd keyboards/<project_name>
+```
+cd keyboards/<project_name>
+```
 
 ### `config.h`
 
@@ -326,7 +328,7 @@ Carefully flip your keyboard over, open up a new text document, and try typing -
 2. Check the solder joints on the diode - if the diode is loose, part of your row may register, while the other may not.
 3. Check the solder joints on the columns - if your column wiring is loose, part or all of the column may not work.
 4. Check the solder joints on both sides of the wires going to/from the Teensy - the wires need to be fully soldered and connect to both sides.
-5. Check the <project_name>.h file for errors and incorrectly placed `KC_NO`s - if you're unsure where they should be, instead duplicate a k*xy* variable.
+5. Check the `<project_name>.h` file for errors and incorrectly placed `KC_NO`s - if you're unsure where they should be, instead duplicate a k*xy* variable.
 6. Check to make sure you actually compiled the firmware and flashed the Teensy correctly. Unless you got error messages in the terminal, or a pop-up during flashing, you probably did everything correctly.
 
 If you've done all of these things, keep in mind that sometimes you might have had multiple things affecting the keyswitch, so it doesn't hurt to test the keyswitch by shorting it out at the end.
@@ -335,4 +337,4 @@ If you've done all of these things, keep in mind that sometimes you might have h
 
 Now that you have a working board, it's time to get things in their permanent positions. I've often used liberal amounts of hot glue to secure and insulate things, so if that's your style, start spreading that stuff like butter. Otherwise, double-sided tape is always an elegant solution, and electrical tape is a distant second. Due to the nature of these builds, a lot of this part is up to you and how you planned (or didn't plan) things out.
 
-There are a lot of possibilities inside the firmware - explore [docs.qmk.fm](http://docs.qmk.fm) for a full feature list, and dive into the different project (Planck, Clueboard, Ergodox EZ, etc) to see how people use all of them. You can always stop by [the OLKB subreddit for help!](http://reddit.com/r/olkb)
+There are a lot of possibilities inside the firmware - explore [docs.qmk.fm](http://docs.qmk.fm) for a full feature list, and dive into the different keyboards (Planck, Clueboard, Ergodox EZ, etc) to see how people use all of them. You can always stop by [the OLKB subreddit for help!](http://reddit.com/r/olkb)

docs/hardware_avr.md

@@ -6,14 +6,26 @@ If you have not yet you should read the [Keyboard Guidelines](hardware_keyboard_
 
 ## Adding Your AVR Keyboard to QMK
 
-QMK has a number of features to simplify working with AVR keyboards. For most keyboards you don't have to write a single line of code. To get started run the `util/new_project.sh` script:
+QMK has a number of features to simplify working with AVR keyboards. For most keyboards you don't have to write a single line of code. To get started, run the `util/new_keyboard.sh` script:
 
-```bash
-$ util/new_project.sh my_awesome_keyboard
-######################################################
-# /keyboards/my_awesome_keyboard project created. To start
-# working on things, cd into keyboards/my_awesome_keyboard
-######################################################
+```
+$ ./util/new_keyboard.sh
+Generating a new QMK keyboard directory
+
+Keyboard Name: mycoolkb
+Keyboard Type [avr]: 
+Your Name [John Smith]: 
+
+Copying base template files... done
+Copying avr template files... done
+Renaming keyboard files... done
+Replacing %KEYBOARD% with mycoolkb... done
+Replacing %YOUR_NAME% with John Smith... done
+
+Created a new keyboard called mycoolkb.
+
+To start working on things, cd into keyboards/mycoolkb,
+or open the directory in your favourite text editor.
 ```
 
 This will create all the files needed to support your new keyboard, and populate the settings with default values. Now you just need to customize it for your keyboard.
@@ -93,6 +105,24 @@ Finally, you can specify the direction your diodes point. This can be `COL2ROW`
 #define DIODE_DIRECTION COL2ROW
 ```
 
+#### Direct Pin Matrix
+To configure a keyboard where each switch is connected to a separate pin and ground instead of sharing row and column pins, use `DIRECT_PINS`. The mapping defines the pins of each switch in rows and columns, from left to right. Must conform to the sizes within `MATRIX_ROWS` and `MATRIX_COLS`, use `NO_PIN` to fill in blank spaces. Overrides the behaviour of `DIODE_DIRECTION`, `MATRIX_ROW_PINS` and `MATRIX_COL_PINS`.
+
+```c
+// #define MATRIX_ROW_PINS { D0, D5 }
+// #define MATRIX_COL_PINS { F1, F0, B0 }
+#define DIRECT_PINS { \
+    { F1, E6, B0, B2, B3 }, \
+    { F5, F0, B1, B7, D2 }, \
+    { F6, F7, C7, D5, D3 }, \
+    { B5, C6, B6, NO_PIN, NO_PIN } \
+}
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL */
+//#define DIODE_DIRECTION
+```
+
 ### Backlight Configuration
 
 By default QMK supports backlighting on pins `B5`, `B6`, and `B7`. If you are using one of those you can simply enable it here. For more details see the [Backlight Documentation](feature_backlight.md).

docs/hardware_drivers.md

@@ -14,9 +14,9 @@ QMK is used on a lot of different hardware. While support for the most common MC
 
 Support for addressing pins on the ProMicro by their Arduino name rather than their AVR name. This needs to be better documented, if you are trying to do this and reading the code doesn't help please [open an issue](https://github.com/qmk/qmk_firmware/issues/new) and we can help you through the process.
 
-## SSD1306 (AVR Only)
+## SSD1306 OLED Driver
 
-Support for SSD1306 based OLED displays. This needs to be better documented, if you are trying to do this and reading the code doesn't help please [open an issue](https://github.com/qmk/qmk_firmware/issues/new) and we can help you through the process.
+Support for SSD1306 based OLED displays. For more information see the [OLED Driver Feature](feature_oled_driver.md) page.
 
 ## uGFX
 
@@ -32,4 +32,4 @@ Support for up to 2 drivers. Each driver impliments 2 charlieplex matrices to in
 
 ## IS31FL3733
 
-Support for up to a single driver with room for expansion. Each driver can control 192 individual LEDs or 64 RGB LEDs. For more information on how to setup the driver see the [RGB Matrix](feature_rgb_matrix.md) page.
+Support for up to a single driver with room for expansion. Each driver can control 192 individual LEDs or 64 RGB LEDs. For more information on how to setup the driver see the [RGB Matrix](feature_rgb_matrix.md) page.

docs/keycodes.md

@@ -450,7 +450,15 @@ This is a reference only. Each group of keys links to the page documenting their
 
 ## [Unicode Support](feature_unicode.md)
 
-|Key    |Description                                                                |
-|-------|---------------------------------------------------------------------------|
-|`UC(c)`|Send Unicode code point `c` (`UNICODE_ENABLE`)                             |
-|`X(i)` |Send Unicode code point at index `i` in `unicode_map` (`UNICODEMAP_ENABLE`)|
+|Key                   |Aliases  |Description                                                     |
+|----------------------|---------|----------------------------------------------------------------|
+|`UC(c)`               |         |Send Unicode code point `c`                                     |
+|`X(i)`                |         |Send Unicode code point at index `i` in `unicode_map`           |
+|`XP(i, j)`            |         |Send Unicode code point at index `i`, or `j` if Shift/Caps is on|
+|`UNICODE_MODE_FORWARD`|`UC_MOD` |Cycle through selected input modes                              |
+|`UNICODE_MODE_REVERSE`|`UC_RMOD`|Cycle through selected input modes in reverse                   |
+|`UNICODE_MODE_OSX`    |`UC_M_OS`|Switch to macOS input                                           |
+|`UNICODE_MODE_LNX`    |`UC_M_LN`|Switch to Linux input                                           |
+|`UNICODE_MODE_WIN`    |`UC_M_WI`|Switch to Windows input                                         |
+|`UNICODE_MODE_BSD`    |`UC_M_BS`|Switch to BSD input (not implemented)                           |
+|`UNICODE_MODE_WINC`   |`UC_M_WC`|Switch to Windows input using WinCompose                        |

docs/newbs_testing_debugging.md

@@ -13,9 +13,9 @@ Note: These programs are not provided by or endorsed by QMK.
 * [Keyboard Tester](http://www.keyboardtester.com) (Web Based)
 * [Keyboard Checker](http://keyboardchecker.com) (Web Based)
 
-## Debugging With QMK Toolbox
+## Debugging
 
-[QMK Toolbox](https://github.com/qmk/qmk_toolbox) will show messages from your keyboard if you have `CONSOLE_ENABLE = yes` in your `rules.mk`. By default the output is very limited, but you can turn on debug mode to increase the amount of debug output. Use the `DEBUG` keycode in your keymap, use the [Command](feature_command.md) feature to enable debug mode, or add the following code to your keymap.
+Your keyboard will output debug information if you have `CONSOLE_ENABLE = yes` in your `rules.mk`. By default the output is very limited, but you can turn on debug mode to increase the amount of debug output. Use the `DEBUG` keycode in your keymap, use the [Command](feature_command.md) feature to enable debug mode, or add the following code to your keymap.
 
 ```c
 void keyboard_post_init_user(void) {
@@ -27,6 +27,14 @@ void keyboard_post_init_user(void) {
 }
 ```
 
+### Debugging With QMK Toolbox
+
+For compatible platforms, [QMK Toolbox](https://github.com/qmk/qmk_toolbox) can be used to display debug messages from your keyboard.
+
+### Debugging With hid_listen
+
+Prefer a terminal based solution? [hid_listen](https://www.pjrc.com/teensy/hid_listen.html), provided by PJRC, can also be used to display debug messages. Prebuilt binaries for Windows,Linux,and MacOS are available.
+
 <!-- FIXME: Describe the debugging messages here. -->
 
 ## Sending Your Own Debug Messages
@@ -41,3 +49,51 @@ After that you can use a few different print functions:
 * `uprintf("%s string", var)`: Print a formatted string
 * `dprint("string")` Print a simple string, but only when debug mode is enabled
 * `dprintf("%s string", var)`: Print a formatted string, but only when debug mode is enabled
+
+## Debug Examples
+
+Below is a collection of real world debugging examples. For additional information, refer to [Debugging/Troubleshooting QMK](faq_debug.md).
+
+### Which matrix position is this keypress?
+
+When porting, or when attempting to diagnose pcb issues, it can be useful to know if a keypress is scanned correctly. To enable logging for this scenario, add the following code to your keymaps `keymap.c`
+
+```c
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  // If console is enabled, it will print the matrix position and status of each key pressed
+#ifdef CONSOLE_ENABLE
+    uprintf("KL: kc: %u, col: %u, row: %u, pressed: %u\n", keycode, record->event.key.col, record->event.key.row, record->event.pressed);
+#endif 
+  return true;
+}
+```
+
+Example output
+```text
+Waiting for device:.......
+Listening:
+KL: kc: 169, col: 0, row: 0, pressed: 1
+KL: kc: 169, col: 0, row: 0, pressed: 0
+KL: kc: 174, col: 1, row: 0, pressed: 1
+KL: kc: 174, col: 1, row: 0, pressed: 0
+KL: kc: 172, col: 2, row: 0, pressed: 1
+KL: kc: 172, col: 2, row: 0, pressed: 0
+```
+
+### How long did it take to scan for a keypress?
+
+When testing performance issues, it can be useful to know the frequency at which the switch matrix is being scanned. To enable logging for this scenario, add the following code to your keymaps `config.h`
+
+```c
+#define DEBUG_MATRIX_SCAN_RATE
+```
+
+Example output
+```text
+  > matrix scan frequency: 315
+  > matrix scan frequency: 313
+  > matrix scan frequency: 316
+  > matrix scan frequency: 316
+  > matrix scan frequency: 316
+  > matrix scan frequency: 316
+```