* [Docs] Add Speed functions to RGB Light docs

* Add noeeprom functions for speed

* Fix wording in doc

Co-authored-by: Ryan <fauxpark@gmail.com>

Co-authored-by: Ryan <fauxpark@gmail.com>

* Add additional query functions for RGBLIGHT

* Add additional query functions for RGB Matrix

* Change names of enable check functions

* Fix macro for rgb matrix takeover of rgblight functions

* Add documentation for rgb_matrix_get_hsv()

* Add *_get_hsv function to rgblight

* Allow 16 lighting layers

* Require #define RGBLIGHT_LAYERS_16 to enable 16 layers

* Override RGBLIGHT_MAX_LAYERS to set maximum number of lighting layers

* Enforce lower bound on RGBLIGHT_MAX_LAYERS

Co-Authored-By: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Fix an error in the check for valid RGBLIGHT_MAX_LAYERS

* Don't use bitfield / PACKED, as it causes bloat

* Update documentation re: up to 32 lighting layers

* Run cformat

* Add note about increasing FW size in docs/config_options.md

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Remove no-longer-valid comment

* Add doc note that split sync will be slower

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>

* Add twinkle RGB Lighting effect

* 2nd twinkle algo - double-buffering

* Further refinement: Per-LED twinkle

* Add documentation for Twinkle RBG Lighting mode

* Bias twinkle saturation closer to the set value

* Fix whitespace

* Implement momentarily blink of lighting layers

* Refactor spidey3 userspace to use rgb layer blink

* Remove un-necessary line from example in documentation

* Revert "Refactor spidey3 userspace to use rgb layer blink"

This reverts commit 831649bb68.

* Adds a missing bit of documentation about lighting layer blink

* Update docs/feature_rgblight.md per suggestions

Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

* Update docs/feature_rgblight.md per suggestions

Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

* Update docs/feature_rgblight.md per suggestions

Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

* cformat, as suggested

Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

* New feature: RGBLIGHT_LAYERS

This feature allows users to define multiple independent layers of lighting
that can be toggled on and off individually, making it easy to use your
RGB lighting to indicate things like active keyboard layer & modifier state.

* Demonstrate built in functions for layer state checking

Also link the video in the docs.

* Follow existing pattern for setting rgblight_status flags

* Eliminate rgblight_is_static_mode since it's not needed

Just check to see if the timer is enabled directly.

* Moved contents of rgblight_reconfig.h to rgblight_post_config.h.

In #3582, rgblight_reconfig.h had to be newly created. Now, the build system of qmk_firmware has a post_cofig feature, so that what was done in rgblight_reconfig.h can now be realized in rgblight_post_config.h.

**This commit does not change the build result.**

Testing script
```shell
  # build on master
  git checkout master
  echo master > /tmp/master_md5.txt

  # RGBLIGHT_ENABLE = no
  make HELIX=verbose helix/rev2:default:clean
  make HELIX=verbose helix/rev2:default
  md5 helix_rev2_default.hex >> /tmp/master_md5.txt

  # RGBLIGHT_ENABLE = yes, with animations
  make HELIX=verbose helix/rev2/back:default:clean
  make HELIX=verbose helix/rev2/back:default
  md5 helix_rev2_back_default.hex >> /tmp/master_md5.txt

  # RGBLIGHT_ENABLE = yes, without animations
  make HELIX=verbose,no_ani helix/rev2/back:default:clean
  make HELIX=verbose,no_ani helix/rev2/back:default
  md5 helix_rev2_back_default.hex >> /tmp/master_md5.txt

  # build on refactor_rgblight_reconfig.h
  git checkout refactor_rgblight_reconfig.h
  echo refactor_rgblight_reconfig.h > /tmp/branch_md5.txt

  # RGBLIGHT_ENABLE = no
  make HELIX=verbose helix/rev2:default:clean
  make HELIX=verbose helix/rev2:default
  md5 helix_rev2_default.hex >> /tmp/branch_md5.txt

  # RGBLIGHT_ENABLE = yes, with animations
  make HELIX=verbose helix/rev2/back:default:clean
  make HELIX=verbose helix/rev2/back:default
  md5 helix_rev2_back_default.hex >> /tmp/branch_md5.txt

  # RGBLIGHT_ENABLE = yes, without animations
  make HELIX=verbose,no_ani helix/rev2/back:default:clean
  make HELIX=verbose,no_ani helix/rev2/back:default
  md5 helix_rev2_back_default.hex >> /tmp/branch_md5.txt

  diff -u /tmp/master_md5.txt /tmp/branch_md5.txt
```

Test result:
```
--- /tmp/master_md5.txt 2020-01-03 15:42:22.000000000 +0900
+++ /tmp/branch_md5.txt 2020-01-03 15:42:42.000000000 +0900
@@ -1,4 +1,4 @@
-master
+refactor_rgblight_reconfig.h
 MD5 (helix_rev2_default.hex) = f360032edd522448366d471d8f4f8181
 MD5 (helix_rev2_back_default.hex) = 0c663acc6cccc44476b3b969ad22a48f
 MD5 (helix_rev2_back_default.hex) = e66b1195ff6d38e6e22c975b8ae42fd3
```

* Expressions that are too long are difficult to read, so wrap them.

* Edit the expression again

* remove `defined(RGBLIGHT_ANIMATIONS)` in `tmk_core/common/*/suspend.c`, `tmk_core/protocol/*/main.c`

move contents of rgblight_reconfig.h to rgblight.h.

The following changes were made to rgblight.h.

```diff
+#ifdef RGBLIGHT_USE_TIMER
 void rgblight_task(void);

 void rgblight_timer_init(void);
 void rgblight_timer_enable(void);
 void rgblight_timer_disable(void);
 void rgblight_timer_toggle(void);
+#else
+#define rgblight_task()
+#define rgblight_timer_init()
+#define rgblight_timer_enable()
+#define rgblight_timer_disable()
+#define rgblight_timer_toggle()
+#endif
```

The following changes were made to tmk_core/common/avr/suspend.c, tmk_core/common/chibios/suspend.c, tmk_core/protocol/chibios/main.c, tmk_core/protocol/lufa/lufa.c, tmk_core/protocol/vusb/main.c.

```diff
-#    ifdef RGBLIGHT_ANIMATIONS
     rgblight_timer_enable();
-#    endif
```
```diff
-#if defined(RGBLIGHT_ANIMATIONS) && defined(RGBLIGHT_ENABLE)
+#if defined(RGBLIGHT_ENABLE)
         rgblight_task();
 #endif
```

* remove 'defined(RGBLIGHT_ANIMATIONS)' in tmk_core/common/keyboard.c

Co-authored-by: Joel Challis <git@zvecr.com>

* Add VIA support for QMK backlight, QMK RGBLight

* clang-format changes

Because someone named the define poorly

Using full relative path as handwired/promethium has a color.h file

* add rgblight_set_effect_range()

* implement effect range

* Arrange the order of function list in rgblight.h .

* update docs/feature_rgblight.md

* fix RGBLIGHT_RAINBOW_SWIRL_RANGE default value

* add example code about Utility Functions

* add example code about direct operation functions

* When RGBLIGHT_SPLIT is defined, the following function has no meaning and is invalidated.

 * rgblight_setrgb_master(r, g, b)
 * rgblight_setrgb_slave(r, g, b)
 * rgblight_sethsv_master(h, s, v)
 * rgblight_sethsv_slave(h, s, v)

* add temporary test code for rgblight_set_effect_range

* fix rgblight_effect_knight() bug

* Test End. Revert "add temporary test code for rgblight_set_effect_range"

This reverts commit 5680cddd01.

* If RGBLIGHT_EFFECT_BREATHE_CENTER is undefined, use fixed breathe table instead of exp() and sin()

* Change rgblight breathing table size to be easily selectable.

add RGBLIGHT_BREATHE_TABLE_SIZE macro for customize breathing effect.

* add temporary file that is rgblight.c call graph

* add rgblight_update_hook()

* update rgblight-call-graph.dot (temporary file)

* add more hook point

* add TODO comment

* temporary Revert "add TODO comment"

This reverts commit df6165aac9.

* temporary Revert "add more hook point"

This reverts commit 64592b06f3.

* temporary Revert "add rgblight_update_hook()"

This reverts commit 432b74c912.

* add rgblight_update_hook()

* add more hook point

* add TODO comment

* implement rgblight_update_hook()

* remove rgblight_update_hook(), add RGBLIGHT_SPLIT_SET_CHANGE_XXXX

rgblight_update_hook() is too large.
change to simple flag setting.

* shrink rgblight_config_t

* implement rgblight_update_sync()

Note: The animation synchronization process has not been implemented yet.

* update quantum/rgblight-call-graph.dot (temporary file)

* rmove quantum/rgblight-call-graph.dot (temporary file)

* update rgblight.c

* Add temporary code to Helix keyboard 'five_rows' keymap to test rgblight.c .

* fix build break rgblight_update_sync() when all animation off

* fix quantum/rgblight.c:rgblight_disable_XX() add RGBLIGHT_SPLIT_SET_CHANGE_MODE

* quantum/rgblight.c change code order: move rgblight_update_sync()

* add mode_base_table[] to quantum/rgblight.c

* quantum/rgblight.c use mode_base_table[] and rgblight_status.base_mode

* quantum/rgblkght.c animation timer integration

* quantum/rgblkght.c add animation sync for split keyboard

* fix mode_base_table[] and snake effect

* fix build break keyboards/mxss.

keyboards/mxss's local rgblight.c need old version rgblight.h

* rgblight.c: fix animation sync

* quantum/rgblight.c: fix snake effect sync

* quantum/rgblight.c: animation sync interverl 30 sec

* quantum/rgblight.c: fix rgblight_effect_rainbow_swirl() and rgblight_effect_knight()

* quantum/rgblight.c: add macro RGBLIGHT_SPLIT_ANIMATION

* cherry-pick from 'rgblight_modes.h sample implementation'

* fix RGBLIGHT_SPLIT_ANIMATION check position

* Update temporary code in Helix keyboard 'five_rows' keymap to test rgblight.c

* Reduce the firmware size by 1500 bytes when rgblight_effect_breathing() is enabled.

* Changed to rgblight_sethsv_eeprom_helper() for easier reading.

* add fail-safe code to quantum/rgblight.c:rgblight_task(),rgblight_timer_enable()

* remove temporary code in Helix keyboard 'five_rows' keymap

* quantum/rgblight.c: add split-keyboard master side sync functions

add functions:
  uint8_t rgblight_get_change_flags(void);
  void rgblight_clear_change_flags(void);
  void rgblight_get_syncinfo(rgblight_syncinfo_t *syncinfo);

change function:
  void rgblight_update_sync(rgblight_syncinfo_t *syncinfo, bool write_to_eeprom);

* Change rgblight_update_sync() to use write_to_eeprom.

* remove TODO comment from quantum/rgblight.h

* Revert "fix build break keyboards/mxss."

This reverts commit 90b9a1aa7d.
(Separated this change into the newly opened PR #5461.)

* Revert "Reduce the firmware size by 1500 bytes when rgblight_effect_breathing() is enabled."

This reverts commit b61004e63e.

* update quantum/rgblight.c: Code size reduction when not using RGBLIGHT_SPLIT.

* Add temporary code to Helix keyboard 'five_rows' keymap to test rgblight.c .

* add temporary pdhelix(Patched Helix) code

* Add temporary code to split_common/transport.c to test rgblight.c.

* Finish testing rgblight.c with helix keyboard.

Revert "Add temporary code to Helix keyboard 'five_rows' keymap to test rgblight.c ."

This reverts commit 0bf81a4723.

* Finish testing rgblight.c with quantum/split_common code.

Revert "Add temporary code to split_common/transport.c to test rgblight.c."

This reverts commit 71db3e24ee.

* remove temporary pdhelix(Patched Helix) code

This reverts commit 5287e51a39.

* Added description of RGBLIGHT_SPLIT macro to docs/feature_rgblight.md.

* add RGBLIGHT_SPLIT_SET_CHANGE_HSVS to rgblight_init()

* Changed to restart animation only when changing mode.

When changing hue, sat and val, the animation is not restarted and continues.

* Add support for wiring RGB LEDs for both halves directly to their respective controllers

RGB LEDs for each half don't need to be chained together across the TRRS cable with this

* Add split RGB LED support for serial

* Update config/rules for bakingpy layout

* Un-nest ifdefs for hand detection

* Read RGB config state from memory instead of EEPROM for serial updates

* Reuse existing LED pointer instead of creating new one

* Make rgblight_update_dword not update eeprom (we already have
eeconfig_update_rgblight for that).

Make split i2c keyboards transfer active rgblight config rather than
eeprom saved version of rgblight config, enabling runtime changes
that aren't persisted to eeprom.

* prev_level and prev_rgb only store successfully transmitted values

* Add support for using ranges for RGB

This patch adds support for controlling continuous ranges of RGB LEDs.
Helper functions for split boards are also available.

* RGB Range: Use hardware-platform agnostic wait

* Improve RGB Light code

* Add is_rgblight_initialized as an externed value in rgblight.h

* Use remander of hue

* Change rgblight_get_mode's return type to uint8_t.

Since rgblight_get_mode() is just returning rgblight_config_t.mode,
it should match rgblight_config_t.mode's type: uint8_t.

* Update rgb_matrix_get_mode to return uint8_t.

Add a temporary comment. The content is a contrast table of old magic number and new symbol.

* add temporary test code rgblight-macro-test1.[ch]

* rgblight.h : mode auto numberring and auto generate mode name symbol

No change in build result.

* rgblight.c use RGBLIGHT_MODE_xxx symbols

No change in build result.

* quantum.c use RGBLIGHT_MODE_xxx symbols

No change in build result.

* fix build break. when RGB_MATRIX_ENABLE defined

* add temporary test code rgblight-macro-test2.[ch]

* modify rgblight_mode_eeprom_helper() and rgblight_sethsv_eeprom_helper()

* modify rgblight_task()

* configurable each effect compile on/off in config.h

* update docs/feature_rgblight.md

* fix conflict. docs/feature_rgblight.md

* remove temporary test code rgblight-macro-test*.[ch]

* fix comment typo.

* remove old mode number from comment

* update docs/feature_rgblight.md about effect mode

* Revert "update docs/feature_rgblight.md about effect mode"

This reverts commit 43890663fc.

* some change docs/feature_rgblight.md

* fix typo

* docs/feature_rgblight.md update: revise mode number table

* added alternating led pattern

* added alternating with rgblight_config values

* removed my comments

* Line ending stuff again

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

* Added personal keymap, updated some of the EH files

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

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

THIS IS WORKING CODE, WITHOUT RGB AND BACKLIGHT

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

* Updated eh.c

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

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

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

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

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

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

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

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

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

* Removed some debugging from eh.c

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

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

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

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

* Fixed lets_split_eh not having a default version

* Removed "eh" references from lets_split folder for now

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

* Changed LAYOUT_ortho_4x12_kc -> LAYOUT_kc_ortho_4x12 to match bakingpy and others

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

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

* add rgblight mode 35 (RGB cyclic mode) into quantum/rgblight.c

* Update docs, add rgblight mode 35(RGB cyclic)

* rename RGBCYCLIC to RGBTEST

* And and fix _noeeprom functions to many of the RGB Underglow functions

* Many functions are unnecessarily calling the eeprom write code. The toggle/enable is command is especially guilty of this, as it writes to EEPROM 3 times.  But rgb mode writes twice, every time it's called. And init resets the rgb eeprom range and then writes back to it twice!
* Fixed the rgblight_sethsv_noeeprom to work as expected, by moving a lot of the code to a helper function.
* Added a noeeprom function for mode, enable, disable, and toggle functions. (didn't bother for increase/decrease stuff, and didn't add new keycodes)
* Add to predefined colors list
* Add new functions to manual/docs

* Update RGB Sleep feature to use _noeeprom

Because that's exactly what it should be doing, actually!

* Added Modular keyboards L,R and NUM

Created code modules for the 3 modules of the modular keyboard.
Original idea by MechboardsUK. Uses i2c implementation similar to lets
split

* Remove modular from master

This is to fix incorrect branching

* Add effect speed support for RGB Matrix *No eeprom yet*

Keycodes RGB_SPI and RGB_SPD have been added to increase and decrease effect speed.

Speed is not saved in EEPROM yet as per Jack's request.

* Update rgb_matrix.c

* RGB Matrix speed fix rgblight.h

* More fixes for rgb speed. Speed functions declared but not used in rgblight

* More travis fixes..

* Another one for travis..

* Added functions to read HSV values

I have added three functions to rgb_light.c to be able to read the hue, saturation and value from other places.
They are rgblight_get_hue(), rgblight_get_sat(), adn rgblight_get_val().

* Create keymap.c

* Add COSPAD support to QMK

I have ported the COSPAD numpad to qmk.

* Update readme.md

* Update cospad.c

Refactors rgblight_toggle to use rgblight_enable or rgblight_disable
Use 'rgblight_setrgb_at/rgblight_sethsv_at' to control an individual LED

* Address #1689 by using a formula to define the breathing curve and exposing defines to control the shape of the curve.

* Tweak the behavior of breathing for clueboard

* Allow the knight animation to be restricted to a portion of the LED strip

* Add keys for jumping directly to particular animation modes

* Remove orphaned break statements

* Tweak the `RGB_MODE` buttons so they cycle through the same mode.

* small indentation fix

* Simplify RGB Knight mode code, and make it look closer to KITT

* Remove RGBLIGHT_EFFECT_DUALKNIGHT_LENGTH

* start driver isolation

* update nyquist and orthodox boards

* update atreus62

* move drivers to avr

* update avr conditional

* Clarify the license for files we have signoff on

* Update against the currently signed off files

* Remove unused and not clearly licensed headers

* Replace an #endif I accidentally removed while resolving merge conflicts

Added Christmas mode steps to reduce red and green colors blending into each other
Added Christmas mode interval
Increased green hue to 120