* Redo Arm DAC implementation for additive, wavetable synthesis, sample playback

changes by Jack Humbert on an implementation for DAC audio on arm/chibios platforms
this commits bundles the changes from the arm-dac-work branch focused on audio/audio_arm.* into one commit (leaving out the test-keyboard)

f52faeb5d (origin/arm-dac-work) add sample and wavetable examples, parsers for both
  -> only the changes on audio_arm_.*, the keyboard related parts are split off to a separate commit
bfe468ef1 start morphing wavetable
474d100b5 refined a bit
208bee10f play_notes working
3e6478b0b start in-place documentation of dac settings
3e1826a33 fixed blip (rounding error), other waves, added key selection (left/right)
73853d651 5 voices at 44.1khz
dfb401b95 limit voices to working number
9632b3379 configuration for the ez
6241f3f3b notes working in a new way

* Redo Arm DAC implementation for additive, wavetable synthesis, sample playback

changes by Jack Humbert on an implementation for DAC audio on arm/chibios platforms

this commit splits off the plank example keymap from commit
    f52faeb5d (origin/arm-dac-work) add sample and wavetable examples, parsers for both

* refactoring: rename audio_ to reflect their supported hardware-platform and audio-generation method: avr vs arm, and pwm vs dac

* refactoring: deducplicate ISR code to update the pwm duty-cycle and period in the avr-pwm-implementation

pulls three copies of the same code into one function
which should improve readability and maintainability :-)

* refactoring: move common code of arm and avr implementation into a separate/new file

* refactoring: audio_avr_pwm, renaming defines to decouple them from actually used timers, registers and ISRs

* refactoring: audio_avr_pwm - replacing function defines with plain register defines

aligns better with other existing qmk code (and the new audio_arm_pwm) doing similar pwm thing

* add audio-arm-pwm

since not all STM32 have a DAC onboard (STM32F2xx and STM32F3xx), pwm-audio is an alternative (STM32F1xx)
this code works on a "BluePill" clone, with an STM32F103C8B

* clang-format changes on quantum/audio/* only

* audio_arm_dac: stopping the notes caused screeching when using the DAC audio paths

* audio_arm_pwm: use pushpull on the pin; so that a piezzo can be hooked up direclty without additional components (opendrain would require an external pullup)

* refactoring: remove unused file from/for atmel-avr chips

* refactoring: remove unused (avr) wavetable file

* audio_arm_dac: adapt dac_end callback to changed chibios DAC api

the previous chibios (17.6.0) passed along a pointer into the buffer plus a sample_count (which are/already where included in the DACDrivre object) - the current chibios (19.1.0) only passes the driver object.
this patch ports more or less exactly what the previous chibios ISR code did: either have the user-callback work the first or second half of the buffer (dacsample_t pointer, with half the DAC_BUFFER_SIZE samples) by adjusting the pointer and sample count

* audio-arm-dac: show a compile-warning on undefined audio-pins

Co-Authored-By: Drashna Jaelre <drashna@live.com>

* audio_arm_dac: switch from exemplary wavetable generation to sine only

sine+triangle+squrare is exemplary, and not realy fit for "production" use
'stairs' are usefull for debugging (hardware, with an oscilloscope)

* audio_arm_dac: enable output buffers in the STM32

to drive external loads without any additional ciruitry - external opamps and such

* audio: prevent out-of-bounds array access

* audio_arm_dac: add output-frequency correcting factor

* audio_arm_pwm: get both the alternate-function and pm-callback variants back into working condition

and do some code-cleanup, refine documentation, ...

* audio_arm_pwm: increase pwm frequency for "higher fidelity"

on the previous .frequency=100000 higher frequency musical notes came out wrong
(frequency measured on a Tektronix TDS2014B)
note | freq | arm-pwm
C2 | 65.4 | 65.491
C5 | 523.25 | 523.93
C6 | 1046.5 | 1053.38
C7 | 2093 | 2129
C8 | 4186 | 4350.91

with .frequency = 500000
C8 | 4186 | 4204.6

* audio refactoring: remove unused variables

* audio_arm_dac: calibrate note tempo: with a tempo of 60beats-per-second a whole-note should last for exactly one second

* audio: allow feature selection in rules.mk

so the user can switch the audio driver between DAC and PWM on STM32 boards which support both (STM32F2 and up)
or select the "pin alternate" pwm mode, for example on STM32F103

* audio-refactoring: move codeblocks in audio.[ch] into more coherent groups

and add some inline documentation

* audio-refactoring: cleanup and streamline common code between audio_arm_[dac|pwm]

untangeling the relation between audio.c and the two drivers
and adding more documenting comments :-)

* audio_avr_pwm: getting it back into working condition, and cleanup+refactor

* audio-refactoring: documentation and typo fixes

Co-Authored-By: Nick Brassel <nick@tzarc.org>

* audio-refactoring: cleanup defines, inludes and remove debug-prints

* audio_chibios_dac: define&use a minimal sampling rate, based on the available tone-range

to ease up on the cpu-load, while still rendering the higher notes/tones sufficiently
also reenable the lower tones, since with the new implementation there is no evidence of them still beeing 'bugged'

* audio-refactoring: one common AUDIO_MAX_VOICES define for all audio-drivers

* audio-chibios-pwm: pwm-pin-allternate: make the the timer, timer-channel and alternate function user-#definable

* audio_chibios_dac: math.h has fmod for this

* Redo Arm DAC implementation for additive, wavetable synthesis, sample playback

update Jack Humberts dac-example keymaps for the slight changes in the audio-dac interface

* audio-refactoring: use a common AUDIO_PIN configuration switch instead of defines

have the user select a pin by configuration in rules.mk instead of a define in config.h
has the advantage of beeing in a common form/pattern across all audio-driver implementations

* audio-refactoring: switch backlight_avr.c to the new AUDIO_PIN defines

* audio-common: have advance_note return a boolean if the note changed, to the next one in the melody beeing played

* audio-chibios-pwm: fix issue with ~130ms silence between note/frequency changes while playing a SONG

through trial,error and a scope/logic analyzer figured out Chibios-PWMDriver (at least in the current version) misbehaves if the initial period is set to zero (or one; two seems to work); when thats the case subsequent calls to 'pwmChhangePeriod' + pwmEnableChannel took ~135ms of silence, before the PWM continued with the new frequency...

* audio-refactoring: get 'play_note' working again

with a limited number of available voices (say AUDIO_VOICES_MAX=1) allow new frequencies to be played, by discarding the oldest one in the 'frequencies' queue

* audio: set the fallback driver to DAC for chibios and PWM for all others (==avr at the moment)

* audio-refactoring: moore documentation

and some cleanup

* audio-avr-pwm: no fallback on unset AUDIO_PIN

this seems to be the expected behaviour by some keyboards (looking at ckeys/handwire_101:default) which otherwise fail to build because the firmware-image ends up beeing too large for the atmega... so we fail silently instead to keep travis happy

* audio-refactoring: untangling terminology: voice->tone

the code actually was working on tones (combination of pitch/frequency, duration, timbre, intensity/volume) and not voices (characteristic sound of an instrument; think piano vs guitar, which can be played together, each having its own "track" = voice on a music sheet)

* audio-pwm: allow freq=0 aka a pause/rest in a SONG

continue processing, but do not enable pwm units, since freq=0 wouldn't produce any sound anyway (and lead to division by zero on that occasion)

* audio-refactoring: audio_advance_note -> audio_advance_state

since it does not only affect 'one note', but the internally kept state as a whole

* audio-refactoring: untangling terminology: polyphony

the feature om the "inherited" avr code has little to do with polyphony (see wikipedia), but is more a time-multiplexing feature, to work around hardware limitations - like only having one pwm channel, that could on its own only reproduce one voice/instrument at a time

* audio-chibios-dac: add zero-crossing feature

have tones only change/stop when the waveform approaches zero - to avoid audible clicks
note that this also requires the samples to start at zero, since the internally kept index into the samples is reset to zero too

* audio-refactoring: feature: time-multiplexing of tones on a single output channel

this feature was in the original avr-pwm implementation misnomed as "polyphony"
with polyphony_rate and so on; did the same thing though: time-multiplexing multiple active notes so that a single output channel could reproduce more than one note at a time (which is not the same as a polyphony - see wikipedia :-) )

* audio-avr-pwm: get music-mode working (again) on AVRs

with both pwm channels, or either one of the two :-)
play_notes worked already - but music_mode uses play_note

* audio-refactoring: split define MAX_SIMULTANEOUS_TONES -> TONE_STACKSIZE

since the two cases are independant from one another, the hardware might impose limitations on the number of simultaneously reproducable tones, but the audio state should be able to track an unrelated number of notes recently started by play_note

* audio-arm-dac: per define selectable sample-luts

plus generation script in ./util

* audio-refactoring: heh, avr has a MIN...

* audio-refactoring: add basic dac audio-driver based on the current/master implementation

whereas current=d96380e65496912e0f68e6531565f4b45efd1623
which is the state of things before this whole audio-refactoring branch

boiled down to interface with the refactored audio system = removing all
redundant state-managing and frequency calculation

* audio-refactoring: rename audio-drivers to driver_$PLATFORM_$DRIVER

* audio-arm-pwm: split the software/hardware implementations into separate files

which saves us partially from a 'define hell', with the tradeoff that now two somewhat similar chibios_pwm implementations have to be maintained

* audio-refactoring: update documentation

* audio-arm-dac: apply AUDIO_PIN defines to driver_chibios_dac_basic

* audio-arm-dac: dac_additive: stop the hardware when the last sample completed

the audio system calls for a driver_stop, which is delayed until the current sample conversion finishes

* audio-refactoring: make function-namespace consistent

- all (public) audio functions start with audio_
- also refactoring play*_notes/tones to play*_melody, to visually distance it a bit from play*_tone/_note

* audio-refactoring: consistent define namespace: DAC_ -> AUDIO_DAC_

* audio-arm-dac: update (inline) documentation regarding MAX for sample values

* audio-chibios-dac: remove zero-crossing feature

didn't quite work as intended anyway, and stopping the hardware on close-to-zero seems to be enought anyway

* audio-arm-dac: dac_basic: respect the configured sample-rate

* audio-arm-pwm: have 'note_timbre' influence the pwm-duty cycle

like it already does in the avr implementation

* audio-refactoring: get VIBRATO working (again)

with all drivers (verified with chibios_[dac|pwm])

* audio-arm-dac: zero-crossing feature (Mk II)

wait for the generated waveform to approach 'zero' before either turning off the output+timer or switching to the current set of active_tones

* audio-refactoring: re-add note-resting -> introduce short_rest inbetween

- introduce a short pause/rest between two notes of the same frequency, to separate them audibly
- also updating the refactoring comments

* audio-refactoring: cleanup refactoring remnants

remove the former avr-isr code block - since all its features are now refactored into the different parts of the current system

also updates the TODOS

* audio-refactoring: reserve negative numbers as unitialized frequencies

to allow the valid tone/frequency f=0Hz == rest/pause

* audio-refactoring: FIX: first note of melody was missing

the first note was missing because 'goto_next_note'=false overrode a state_change=true of the initial play_tone
and some code-indentations/cleanup of related parts

* audio-arm-dac: fix hardware init-click

due to wron .init= value

* audio-refactoring: new conveniance function: audio_play_click

which can be used to further refactor/remove fauxclicky (avr only) and/or the 'clicky' features

* audio-refactoring: clang-format on quantum/audio/*

* audio-avr-pwm: consecutive notes of the same frequency get a pause inserted inbetween by audio.c

* audio-refactoring: use milliseconds instead of seconds for 'click' parameters

clicks are supposed to be short, seconds make little sense

* audio-refactoring: use timer ticks instead of counters

local counters were used in the original (avr)ISR to advance an index into the lookup tables (for vibrato), and something similar was used for the tone-multiplexing feature
decoupling these from the (possibly irregular) calls to advance_state made sesne, since those counters/lookups need to be in relation to a wall-time anyway

* audio-refactoring: voices.c: drop 'envelope_index' counter in favour of timer ticks

* audio-refactoring: move vibrato and timbre related parts from audio.c to voices.c

also drops the now (globally) unused AUDIO_VIBRATO/AUDIO_ENABLE_VIBRATO defines

* audio.c: use system-ticks instead of counters the drivers have to take care of for the internal state posision

since there already is a system-tick with ms resolution, keeping count separatly with each driver implementation makes little sense; especially since they had to take special care to call audio_advance_state with the correct step/end parameters for the audio state to advance regularly and with the correct pace

* audio.c: stop notes after new ones have been started

avoids brief states of with no notes playing that would otherwise stop the hardware and might lead to clicks

* audio.c: bugfix: actually play a pause

instead of just idling/stopping which lead the pwm drivers to stop entirely...

* audio-arm-pwm: pwm-software: add inverted output

new define AUDIO_PIN_ALT_AS_NEGATIVE will generate an inverted signal on the alternate pin, which boosts the volume if a piezo is connected to both AUDIO_PIN and AUDIO_PIN_ALT

* audio-arm-dac: basic: handle piezo configured&wired to both audio pins

* audio-refactoring: docs: update for AUDIO_PIN_ALT_AS_NEGATIVE and piezo wiring

* audio.c: bugfix: use timer_elapsed32 instad of keeping timestamps

avoids running into issues when the uint32 of the timer overflows

* audio-refactoring: add 'pragma once' and remove deprecated NOTE_REST

* audio_arm_dac: basic: add missing bracket

* audio.c: fix delta calculation

was in the wrong place, needs to use the 'last_timestamp' before it was reset

* audio-refactoring: buildfix: wrong legacy macro for set_timbre

* audio.c: 16bit timerstamps suffice

* audio-refactoring: separate includes for AVR and chibios

* audio-refactoring: timbre: use uint8 instead of float

* audio-refactoring: duration: use uint16 for internal per-tone/note state

* audio-refactoring: tonemultiplexing: use uint16 instead of float

* audio-arm-dac: additive: set second pin output-low

used when a piezo is connected to AUDIO_PIN and AUDIO_PIN_ALT, with PIN_ALT_AS_NEGATIVE

* audio-refactoring: move AUDIO_PIN selection from rules.mk to config.h

to be consistent with how other features are handled in QMK

* audio-refactoring: buildfix: wrong legacy macro for set_tempo

* audio-arm-dac: additive: set second pin output-low -- FIXUP

* audio.c: do duration<>ms conversion in uint instead of float

on AVR, to save a couple of bytes in the firmware size

* audio-refactoring: cleanup eeprom defines/usage

for ARM, avr is handled automagically through the avr libc and common_features.mk

Co-Authored-By: Drashna Jaelre <drashna@live.com>

* audio.h: throw an error if OFF is larger than MAX

* audio-arm-dac: basic: actually stop the dac-conversion on a audio_driver_stop

to put the output pin in a known state == AUDIO_DAC_OFF_VALUE, instead of just leaving them where the last conversion was... with AUDIO_PIN_ALT_AS_NEGATIVE this meant one output was left HIGH while the other was left LOW

one CAVEAT: due to this change the opposing squarewave when using both A4 and A5 with AUDIO_PIN_ALT_AS_NEGATIVE
show extra pulses at the beginning/end on one of the outputs, the two waveforms are in sync otherwise.
the extra pusles probably matter little, since this is no high-fidelity sound generation :P

* audio-arm-dac: additive: move zero-crossing code out of dac_value_generate

which is/should be user-overridable == simple, and doing one thing: providing sample values
state-transitions necessary for the zero crossing are better handled in the surrounding loop in the dac_end callback

* audio-arm-dac: dac-additive: zero-crossing: ramping up or down

after a start trigger ramp up: generate values until zero=OFF_VALUE is reached, then continue normally
same in reverse for strop trigger: output values until zero is reached/crossed, then keep OFF_VALUE on the output

* audio-arm-dac: dac-additive: BUGFIX: return OFF_VALUE when a pause is playing

fixes a bug during SONG playback, which suddenly stopped when it encoutnered a pause

* audio-arm-dac: set a sensible default for AUDIO_DAC_VALUE_OFF

1/2 MAX was probably exemplary, can't think of  a setup where that would make sense :-P

* audio-arm-dac: update synth_sample/_wavetable for new pin-defines

* audio-arm-dac:  default for AUDIO_DAC_VALUE_OFF

turned out that zero or max are bad default choices:
when multiple tones are played (>>5) and released at the same time (!), due to the complex waveform never reaching 'zero' the output can take quite a while to reach zero, and hence the zero-crossing code only "releases" the output waaay to late

* audio-arm-dac: additive: use DAC for negative pin

instead of PAL, which only allows the pin to be configured as output; LOW or HIGH

* audio-arm-dac: more compile-time configuration checks

* audio-refactoring: typo fixed

* audio-refactoring: clang-format on quantum/audio/*

* audio-avr-pwm: add defines for B-pin as primary/only speaker

also updates documentation.

* audio-refactoring: update documentation with proton-c config.h example

* audio-refactoring: move glissando (TODO) to voices.c

refactored/saved from the original glissando implementation in then upstream-master:audio_avr.c

still needs some work though, as it is now the calculation *should* work, but the start-frequency needs to be tracked somewhere/somehow; not only during a SONG playback but also with user input?

* audio-refactoring: cleanup: one round of aspell -c

* audio-avr-pwm: back to AUDIO_PIN

since config_common.h expands them to plain integers, the AUDIO_PIN define can directly be compared to e.g. B5
so there is no need to deal with separate defines like AUDIO_PIN_B5

* audio-refactoring: add technical documentation audio_driver.md

which moves some in-code documentation there

* audio-arm-dac: move AUDIO_PIN checks into c-code

instead of doing everything with the preprocessor, since A4/A5 do not expand to simple integers, preprocessor int-comparison is not possible. but necessary to get a consistent configuration scheme going throughout the audio-code... solution: let c-code handle the different AUDIO_PIN configurations instead (and leave code/size optimizations to the compiler)

* audio-arm-dac: compile-fix: set AUDIO_PIN if unset

workaround to get the build going again, and be backwarts compatible to arm-keyboards which not yet set the AUDIO_PIN define. until the define is enforced through an '#error"

* audio-refactoring: document tone-multiplexing feature

* audio-refactoring: Apply suggestions from documentation review

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

* audio-refactoring: Update docs/audio_driver.md

* audio-refactoring: docs: fix markdown newlines

Terminating a line in Markdown with <space>-<space>-<linebreak> creates an HTML single-line break (<br>).

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

* audio-arm-dac: additive: fix AUDIO_PIN_ALT handling

* audio-arm-pwm: align define naming with other drivers

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

* audio-refactoring: set detault tempo to 120

and add documentation for the override

* audio-refactoring: update backlight define checks to new AUDIO_PIN names

* audio-refactoring: reworking PWM related defines

to be more consistent with other QMK code

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

* audio-arm: have the state-update-timer user configurable

defaulting to GPTD6 or GPTD8 for stm32f2+ (=proton-c)
stm32f1 might need to set this to GPTD4, since 6 and 8 are not available

* audio-refactoring: PLAY_NOTE_ARRAY was already removed in master

* Add prototype for startup

* Update chibiOS dac basic to disable pins on stop

* Add defaults for Proton C

* avoid hanging audio if note is completely missed

* Don't redefine pins if they're already defined

* Define A4 and A5 for CTPC support

* Add license headers to keymap files

* Remove figlet? comments

* Add DAC config to audio driver docs

* Apply suggestions from code review

Co-authored-by: Jack Humbert <jack.humb@gmail.com>

* Add license header to py files

* correct license header

* Add JohSchneider's name to modified files

AKA credit where credit's due

* Set executable permission and change interpeter

* Add 'wave' to pip requirements

* Improve documentation

* Add some settings I missed

* Strip AUDIO_DRIVER to parse the name correctly

* fix depreciated

* Update util/audio_generate_dac_lut.py

Co-authored-by: Jack Humbert <jack.humb@gmail.com>

* Fix type in clueboard config

* Apply suggestions from tzarc

Co-authored-by: Nick Brassel <nick@tzarc.org>

Co-authored-by: Johannes <you@example.com>
Co-authored-by: JohSchneider <JohSchneider@googlemail.com>
Co-authored-by: Nick Brassel <nick@tzarc.org>
Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>
Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: Joshua Diamond <josh@windowoffire.com>
Co-authored-by: Jack Humbert <jack.humb@gmail.com>

* Add Launchpad keymap

Note: RGB and Audio won't work when using B pins for audio

* Add support for rgb matrix on launchpad

* Update config for launchpag

* Disable wait on layer change

* Update config for ErgoDox EZ

* Fixup rgb light userspace code

* Move Corne layout to community layouts folder

* Update config for corne to support community layouts

* Add license header to files

* Minor cleanup of userspace config

* Update Pimironi Trackball code

* Increase debounce time on ergodox

* Fix keymap handling

* Enable wait for USB for moonlander

* Update/add license headers

* fix review issues

* Add Kyria Keymap

* Enable all RGBLIGHT Animations for ARM and high capacity AVR

* Reduce GNUC version for __has_include

* Cleanup Ortho 4x12 Community layout

* Update Collide 39 keymap

* Cleanup Keymaps

* Enable full 30 LEDs for Ergodox

* Change EEPROM Load timing

* Use RGB Matrix on Planck Rev6

* Use correct keymap swap

* Enable everything for ARM

* Only enable rgb sleep on avr until crash is fixed

* Add additional Kyria keymap config

* Overhaul Kyria OLED display

* Improve kyria keymap based on usage

* Minor tweaks to rules

* Update OLED code to truncate properly

* Fix RGB Light layer indication

* Switch all of biton32 to get_highest_layer function

* Fix OLED Keylogger display

* Run qmk cformat over all of my user files

* Slight tweak to kyria based on usage

* Move around LALT_T config

* Add comments about base wrappers to keymaps

* Another cformat pass

* Temp fix for VUSB boards and NKRO

* Convert tabs to spaces in rules.mk files

* Only enable RGBLight if it's enabled

* Add Encoder Flip setting

* Update OLED font file

* Disable a bunch of reactive modes

* Enable rgb matrix for Corne Keyboard

* Convert CRKBD to rgb matrix

* Add Gergo keyboard layout

* Make Diablo 3 tap dance better

* Add basic support for Planck EZ

* Fix RGB Matrix stuff

* Fix keycodes for Planck EZ

* Update CRKBD OLED stuff

* Fix typo for sleep on ergodox glow

* Improve my gergo layout

* Scrolling OLED key logger!

* Change gergo layout

* Hnadle unicode keycodes if unicode is disabled

* Disable COMMAND/CONSOLE for gergo

* Fix right side control

* Re-enable LTO for all platforms

Since I got updated arm gcc binaries that no longer error out on lto

* Update formatting to match newer community standards

Poor 2 space

* Re-alight startup animation to use new HUE range

* Streamline gitlab ci scripts

* Disabled Space Cadet

* Add support for breathing table

* Enable new LTO Option

And clean up defines that will now be repeatitive

* Remove vscode settings

* Additional formatting cleanup of config.h files

* Proper rules include

* Minor tweaks

* Minor tweaks

* Add Desitny 2 Swapped layout support

* Add keycode to keylogger

* Convert my viterbi keymaps

* Fix Orthodox keyboard

* Add more default layers

* Make default layer keycodes more optimized

* Update gitlab CI yaml file

* Rev6 Cleanup

* Fix KC_MAKE macro

* Update GitLab CI yaml file

* More GitLab CI changes

* One final GitLab CI change

* Optimize KC_MAKE

* Reformatting of config

* Feature creeeeeeep

* Planck Rev6 updates

* Move boards into keebio folder

* Rename keymap

* Update BDN9 files

* Update BFO-9000 files

* Update Chocopad files

* Update Dilly files

* Update Fourier files, collapse rev1 into main

* Update Iris files

* Update Laplace files

* Update Levinson files, fix buswerks keymap

* Update Nyquist files

* Fix keymap issues

* Update Quefrency files

* Update Rorschach files

* Update TF68 files

* Update Viterbi files

* Update Viterbi files

* Update Wavelet files

* Reformat default layout

* Fix up default folder for Iris

* Remove already defined aliases

* Fix up userspace after feature merges

* Add new macros for keyboard layouts

* Keep new layouts in keymap for easy reference

* Cleanup layouts

* Fix CRKBD wrappers

* Fix up comments

* Fix spacing in orthodox base layer

* ergodox related cleanup

* Make KC_MAKE only flash when holding shift

* Add option to fast compile boards

* Clean up rgb modes to save space

* Re-enable Swap Hands on my Iris

* Remove chording as it is not documented, not used, and needs work.

* Make Leader Key an optional feature.

* Switch from `PREVENT_STUCK_MODIFIERS` to `STRICT_LAYER_RELEASE`

* Remove `#define PREVENT_STUCK_MODIFIERS` from keymaps.

* Make tap function inline

* Use better makefile keyboard detection

* Remove Copy-Paste macro

* Add F11/F12 to Iris

* Minor tweaks to userspace config

* Set audio clicky randomness to 1.5
* Set NO_DEBUG to only be set if console is not enabled

* Move NO_MUSIC_MODE to userspace config.h

* Reduce Ergodox Debounce

* Add Planck Light config

* Use OSM for ortho 4x12

* Music Mode changes for planck light

* Cleanup do to shutdown user and other fixes in Master

* Add and use 'shutdown_user' fzunction

* Remove global NO_MUSIC_MODE define

* Add NO_MUSIC_MODE to individual keymaps

* Change layer colors

* Remove NO_PRINT and NO_DEBUG from userspace config.h

Since these are automatically disabled if the console isn't enabled.

* Remove backlight code if backlight isn't enabled

* Remove Twinkle from Ergodox

* Disable RGB twinkling and enable PSM

* Clean up RGB matrix code

* Clean up planck light indicators

* Clean up tap code

* Rules cleanup for ortho 4x12

* Fix up userspace template

* Revert "Clean up tap code"

This reverts commit 09f64d6d67.

* Organize includes

* userspace cleanup

* Fix modifier spelling error

* Fix userspace rules

* Disable Permissive Hold again

* Minor clean up

* Fix Tap stuff

* Viterbi Updates for file size

* Use string with delay

* Add skipped region to ergodox

* Add send string config

* Use default_layer_state instead of function

* Fully generalize keyboards

* old iris cleanup

* Fix Drashna keymap compile issues

By checking to see if secret.c exists before actually trying to add it

* Remove unnecessary references

* Add 4x12 ortho board

* Update userspace readme for secrets

* Make RGB more modular

* Fix iris keymap, since we don't need the lower left (Function keys)

* Fix includes

* Add Blanks

* Fix Ergodox lower layer

* Add suspend commands

* Add Maltron Layout

* Add additional layouts

* Finish adding gamepad to Iris

* Tweaks to iris gamepag layer

* make gaming layers more friendly

* minor gaming layer tweak

* Add Carplax

* Add modded key timer function

* Cleanup and macro documentation

* Add QMK DFU info

* Add 'old' keymap for 12 LED spare

* Update Pro Micro documentation

* Disable twinkling so it fits in firmware space

* Switch to QMK DFU bootloader, since it's better anyhow

* Write default layer state colors to EEPROM

Since we are writing to EEPROM anyways, and this way, it sticks on reboot

* Fix QMK DFU bootloader options

* More updates for QMK DFU support

* Use matrix scanning hack for startup_user until #3113 gets merged

* Fix indicator light consistency issue

* Add/readd ifdefs to indicators

* Add/readd alt indicator

* Remove RGB Twinkling from Viterbi macro pad

* Fix default layer color detection

* Fix rebase and detection issues

* Cleanup code so it will compile if RGBLIGHT is disabled

* Revert vsode settings

* Use Pragma Once instead of boilerplate code

* mf68_ble did not have the correct .c and .h files

* Fix JC65 KEYMAP to LAYOUT

* Change KEYMAP to LAYOUT for s60_x

* Convert KEYMAP to LAYOUT for lets_split boards

* Convert KEYMAP to LAYOUT

* more fixes to keymap for iris

* convert KEYMAP to LAYOUT for levinson keyboard

* change losinggeneration's KEYMAP to LAYOUT

* convert KEYMAP to LAYOUT

* convert KEYMAP to LAYOUT for nyquist

* convert KEYMAP to LAYOUT

* convert KEYMAP to LAYOUT for viterbi

* convert KEYMAP to LAYOUT

* convert KEYMAP and its subsidiries to the LAYOUT standard

* convert KEYMAP and its subsidiries to the new LAYOUT standard

* Add Colemak Mod-DH vars

* Add Norman Layot vars

* Set Shift Indicator to include CAPS Lock as well

* Change MEH to GUI

* Add Enter to Macro layer

* Switch raise and lower layers to make more sense (to me)

* Replace unused quote on Ergodox

* Add One Shot defines

* Dim indicator LEDs

* Add short codes for KC_SECRET

* Fix typos

* Update OLKB code in userspace

* Add global userspace config.h

* add compile fix

* Automatically include  from userspace

* update readme

* Re-add QMK Scan loop

* Add EEPROM reset code to all keymaps

* Shorten fauxclick sound

* Use layouts instead of keymap, when possible

* Add OSM detection to ergodox

* Convert Viterbi to LAYOUT macro

* Clean up game macros

* Because I accidently removed the C6 AUDIO define from my viterbi... Whoops

* Minor formatting

* Fix Woodpad because it's still there

* Move Ergodox keymap into layouts folder

* Add build date to version macro

* Remove PREVENT_STUCK_MODIFIERS from config

* Add RGB Underglow Sleeping

* Add RGBLIGHT_SLEEP to toggle/control RGB light behavior

* Update rgb docs

* Update for RGB disable command

* Add to list of predefined rgb colors

* Change layer colors, to reflect new options

* Use Tag Toggle instead

* Clean up macros and add breathing indication for OSM Layer

* Get Viteri Macropad working properly

* Disable unused action features

* Use I2C because that's smaller, apparently

* Remove viterbi-half code

* Minor tweaks

	modified:   users/drashna/drashna.c

* Fix Workman ASCII art

* Add OSM for shifts

* Make Viterbi's 00 code consistant

* Minor Cleanup off Userspace

* Change Tapping Term on Ergodox

* Re-add EEPROM code

* Minor updates and tweaks

* Use QMK_H variables to make keymaps more universal

* Forgot 'break;' for covecube layer

* Tweak Viterbi files now that I have hands on

* Add secrets to Ergodox

* RGB tweaks to Viterbi

* Viterbi RGB layout tweeks

* Minor tweaks

* Add One Shot Mod tap toggle

* Add Faux Clicky to Viterbi, and disable controller's LEDs

* Minor tweaks

* Move D3 keycode defines into userspace

* Updated Userspace Readme

* Minor updates to keymaps

* Minor updates to keymaps

* Add woodpad

* Cleanup

* Remove misc layouts for woodpad

* Move woodpad to handwired

* Updated RGB Underglow info

* Cleanup macros

* Fix odd merge issue

* Tweaked RGB lighting stuff

* Start to merge orthodox/ergodox keymaps (persistant layers)

* Add forced NKRO

* Added Colemak and Dvorak layers to default orthodox keymap

* Added default layer (qwerty/colemak/dvorak) detection to RGB Underglow

* Updated macros and added workman keymaps

* Fixed RGB lighting for Workman layout

* Add leader keys

* Remove force NKRO

* Add Viterbi one handed layout and minor tweaks to others

* Finishing up Viterbi keyboard layout, and NKRO tweaks to other layouts

* Made "make" keystroke universal

* Clean up and updates of drashna keymaps

* Add workman layer to planck

* Update to keymaps

* Fix accidental commit because I don't know how to git

* Fix makefile toggle code in ez keymap
Finish adding RGB code to orthodox

* missing underscore in init function declaration

* Updated RGB Underglow layer indication code due to discovery of the layer_state_set_kb function

* Remove unnecessary planck layout

* Add woodpad

* Cleanup

* Remove misc layouts for woodpad

* Move woodpad to handwired

* Updated RGB Underglow info

* Cleanup macros

* Fix odd merge issue

* Tweaked RGB lighting stuff

* Start to merge orthodox/ergodox keymaps (persistant layers)

* Add forced NKRO

* Added Colemak and Dvorak layers to default orthodox keymap

* Added default layer (qwerty/colemak/dvorak) detection to RGB Underglow

* Updated macros and added workman keymaps

* Fixed RGB lighting for Workman layout

* Add leader keys

* Remove force NKRO

* Add Viterbi one handed layout and minor tweaks to others

Add WIP keymap for dwallace

if you compare split_util.h with the original project by ahtn, the
address we look for isLeftHand config went from addr 7 to addr 10
(decimal). The EEP files were not updated.

EE_HANDS should not be enabled by default since it's more confusing for
most users

Subproject to accomodate second half pad built in opposite orientation
(places TRRS jacks on opposing edges for shorter cable runs)

* Moved duplicated defines out of inappropriate source files (matrix
pins in keymap subdirectory)
* Eliminated default keymap directory
* Hardcoded serial keymap to use serial defines and EE_CONFIG
* Hardcoded i2c keymap to use i2c defines

Having a dedicated I2C keymap and a dedicated serial keymap will allow
the testing suite to check both conditions.

This saves 192 bytes

* fixes from tmk's repo

* rename keyboard to keyboards

local files