* Remove empty override functions, 0-9

* Remove empty override functions, A-D

* Remove empty override functions, E-H

* Remove empty override functions, handwired

* Remove empty override functions, I-L

* Remove empty override functions, M-P

* Remove empty override functions, Q-T

* Remove empty override functions, U-Z

* remove keyboard-level instances of `MIDI_ENABLE = no`

Command:

```
find keyboards/ -type f -name 'rules.mk' -and -not -path '*/keymaps/*' -exec sed -i -e  '/^[ #]*MIDI_ENABLE[ \t]*=[ \t]*no/d' {} +
```

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

* fix case-sensitivity issues on MIDI_ENABLE

Change instances of `MIDI_ENABLE = YES` to `MIDI_ENABLE = yes`.

Command:

```
find keyboards/ -type f -name 'rules.mk' -and -not -path '*/keymaps/*' -exec sed -i -e 's;MIDI_ENABLE[ \t]*=[ \t]*[Yy][Ee][Ss];MIDI_ENABLE = yes;g' {} +
```

* replace `# MIDI controls` with `# MIDI support`

Replace `# MIDI controls` with `# MIDI support` in keyboard-level `rules.mk` files.

Command:

```
find keyboards/ -type f -name 'rules.mk' -and -not -path '*/keymaps/*' -exec sed -i -e 's;#[ \t]*MIDI[ \t]*\(controls\|support\).*;# MIDI support;g' {} +
```

* align inline comments

Aligns the inline comments to the length used by the QMK AVR rules.mk template.

Command:

```
find keyboards/ -type f -name 'rules.mk' -and -not -path '*/keymaps/*' -exec sed -i -e 's;MIDI_ENABLE *= *yes.*;MIDI_ENABLE = yes           # MIDI support;g'  {} +
```

* remove commented instances of `MIDI_ENABLE` from keyboard `rules.mk` files

Commands:

```
find keyboards/ -type f -name 'rules.mk' -and -not -path '*/keymaps/*' -exec sed -i -e 's;#\([ \t]*MIDI_ENABLE\) = yes; \1 = no ;' {} +
find keyboards/ -type f -name 'rules.mk' -and -not -path '*/keymaps/*' -exec sed -i -e 's;^\([ \t]*\)\(MIDI_ENABLE = no\);\2\1;' {} +
find keyboards/ -type f -name 'rules.mk' -and -not -path '*/keymaps/*' -exec sed -i -e '/^[ #]\+MIDI_ENABLE *= *no/d' {} +
```

* remove MIDI configuration boilerplate from keyboard config.h files

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

* Remove backwards compatibility of debounce names

* Update docs

* Update keyboards/keymaps

* disambiguate Bootmagic rules in keymaps

The files edited by this commit were added at a point in time where `BOOTMAGIC_ENABLE = yes` enabled full Bootmagic.

This commit edits the files to specify that full Bootmagic is intended.

* remove BOOTMAGIC_ENABLE=full setting

* unify commented BOOTMAGIC_ENABLE rules in keyboards

Explicitly sets `BOOTMAGIC_ENABLE = no` in keyboards where the rule was commented out.

Command:

```
find keyboards/ -type f -name 'rules.mk' -and -not -path '*/keymaps/*' -exec sed -i -e 's;#[ \t]*\(BOOTMAGIC_ENABLE\)[ \t=]\+\([a-zA-Z]\+\).*;\1 = no       # Virtual DIP switch configuration;g' {} +
```

* remove commented Bootmagic rules from keymap/user level

Command:

```
find keyboards/ layouts/ users/ -type f -name 'rules.mk' -exec sed -i -e '/#.*\(BOOTMAGIC_ENABLE\)[ \t=]\+\([a-z]\+\).*/d' {} +
```

* update keyboard BOOTMAGIC_ENABLE rule formatting

Sets the formatting of BOOTMAGIC_ENABLE rules to `BOOTMAGIC_ENABLE = [value]`, without the inline comments (which will be replaced later).

Command:

```
find keyboards/ -type f -name 'rules.mk' -and -not -path '*/keymaps/*' -exec sed -i -e 's;\(BOOTMAGIC_ENABLE\)[ \t=]\+\([a-z]\+\).*;\1 = \2;g' '{}' +
```

* update keyboards' BOOTMAGIC_ENABLE settings

Updates keyboard `rules.mk` files to use `BOOTMAGIC_ENABLE = lite` where `BOOTMAGIC_ENABLE = full` was being used.

Command:

```
find keyboards/ -type f -name 'rules.mk' -and -not -path '*/keymaps/*' -exec sed -i -e 's;\(BOOTMAGIC_ENABLE = \)full;\1lite;g' '{}' +
```

* update keymap/user BOOTMAGIC_ENABLE settings

Updates keymap/user `rules.mk` files to use `BOOTMAGIC_ENABLE = lite` where `BOOTMAGIC_ENABLE = full` was being used.

Commands:

```
find keyboards/ -type f -name 'rules.mk' -and -path '*/keymaps/*' -exec sed -i -e 's;\(BOOTMAGIC_ENABLE[ \t=]\+\)full;\1lite;g' '{}' +
find layouts/community/ users/ -type f -name 'rules.mk' -exec sed -i -e 's;\(BOOTMAGIC_ENABLE[ \t=]\+\)full;\1lite;g' '{}' +
```

* remove and replace inline comments in keyboards and keymap/user files

Removes and replaces the inline comments, which have been updated to read `Enable Bootmagic Lite`.

Commands:

```
find keyboards/ -type f -name 'rules.mk' -and -path '*/keymaps/*' -exec sed -i -e 's;\(BOOTMAGIC_ENABLE\)[ \t=]\+\([a-z]\+\).*;\1 = \2;g' '{}' +
find layouts/community/ users/ -type f -name 'rules.mk' -exec sed -i -e 's;\(BOOTMAGIC_ENABLE\)[ \t=]\+\([a-z]\+\).*;\1 = \2;g' '{}' +
find keyboards/ layouts/community/ users/ -type f -name 'rules.mk' -exec sed -i -e 's;\(BOOTMAGIC_ENABLE = lite\);\1     # Enable Bootmagic Lite;g' '{}' +
find keyboards/ layouts/community/ users/ -type f -name 'rules.mk' -exec sed -i -e 's;\(BOOTMAGIC_ENABLE = yes\);\1      # Enable Bootmagic Lite;g' '{}' +
find keyboards/ layouts/community/ users/ -type f -name 'rules.mk' -exec sed -i -e 's;\(BOOTMAGIC_ENABLE = no\);\1       # Enable Bootmagic Lite;g' '{}' +
```

* rename improperly named makefiles

Some files intended to be used as makefiles had improper names causing them to not be used as intended when building.

This commit corrects the filenames of the affected files.

* update renamed file with new rule formatting

* update QMK's template files

Updates QMK's `rules.mk` templates to use the new inline comment.

* update QMK Docs

- remove documentation of full Bootmagic
- update links to Bootmagic Lite doc
- add doc for Magic Keycodes

* rules.mk patch for coarse/ixora and coarse/vinta

* error log cleanup: 40percentclub/25

40percentclub/25: Claims to support a community layout that does not exist: ortho_5x5

* error log cleanup: 40percentclub/4x4

☒ 40percentclub/4x4: Claims to support a community layout that does not exist: ortho_4x8
☒ 40percentclub/4x4: Claims to support a community layout that does not exist: ortho_4x16

* error log cleanup: 40percentclub/5x5

☒ 40percentclub/5x5: Claims to support a community layout that does not exist: ortho_5x5

* error log cleanup: 40percentclub/nori

☒ 40percentclub/nori: Claims to support a community layout that does not exist: ortho_4x8

* error log cleanup: barracuda

☒ barracuda: Claims to support a community layout that does not exist: ortho_3x11

* error log cleanup: bpiphany/frosty_flake

☒ keyboards/bpiphany/frosty_flake/frosty_flake.h: LAYOUT_tkl_ansi: Nested layout macro detected. Matrix data not available!

* error log cleanup: bpiphany/pegasushoof/2013

☒ keyboards/bpiphany/pegasushoof/2013/2013.h: LAYOUT_tkl_ansi: Nested layout macro detected. Matrix data not available!

* error cleanup: bpiphany/pegasushoof/2015

☒ keyboards/bpiphany/pegasushoof/2015/2015.h: LAYOUT_tkl_ansi: Nested layout macro detected. Matrix data not available!
☒ keyboards/bpiphany/pegasushoof/2015/2015.h: LAYOUT_tkl_iso: Nested layout macro detected. Matrix data not available!

* error log cleanup: 40percentclub

☒ 40percentclub/25: Claims to support a community layout that does not exist: ortho_5x10
☒ 40percentclub/5x5: Claims to support a community layout that does not exist: ortho_5x10

* error cleanup: converter/usb_usb

☒ keyboards/converter/usb_usb/usb_usb.h: LAYOUT_ansi: Nested layout macro detected. Matrix data not available!
☒ keyboards/converter/usb_usb/usb_usb.h: LAYOUT_iso: Nested layout macro detected. Matrix data not available!
☒ keyboards/converter/usb_usb/usb_usb.h: LAYOUT_jis: Nested layout macro detected. Matrix data not available!
☒ keyboards/converter/usb_usb/usb_usb.h: LAYOUT_ansi: Nested layout macro detected. Matrix data not available!
☒ keyboards/converter/usb_usb/usb_usb.h: LAYOUT_iso: Nested layout macro detected. Matrix data not available!
☒ keyboards/converter/usb_usb/usb_usb.h: LAYOUT_jis: Nested layout macro detected. Matrix data not available!
☒ keyboards/converter/usb_usb/usb_usb.h: LAYOUT_ansi: Nested layout macro detected. Matrix data not available!
☒ keyboards/converter/usb_usb/usb_usb.h: LAYOUT_iso: Nested layout macro detected. Matrix data not available!
☒ keyboards/converter/usb_usb/usb_usb.h: LAYOUT_jis: Nested layout macro detected. Matrix data not available!

* error cleanup: ergo42

☒ ergo42/rev1: Claims to support a community layout that does not exist: ortho_4x14

* error cleanup: handwired/412_64

☒ handwired/412_64: Claims to support a community layout that does not exist: ortho_4x16

* error log cleanup: handwired/tritium_numpad
☒ handwired/tritium_numpad: Claims to support a community layout that does not exist: nontra_6x4

* error log cleanup: handwired/xealous/rev1
☒ handwired/xealous/rev1: Claims to support a community layout that does not exist: split60

* error log cleanup: kbdfans/kbd67/rev2

⚠ kbdfans/kbd67/rev2: info.json uses alias name LAYOUT_65_ansi_blocker_splitbs instead of LAYOUT_65_ansi_blocker_split_bs

* error cleanup: keebio/nyquist

☒ keyboards/keebio/nyquist/nyquist.h: LAYOUT_ortho_4x12: Nested layout macro detected. Matrix data not available!
☒ keyboards/keebio/nyquist/nyquist.h: LAYOUT_ortho_4x12: Nested layout macro detected. Matrix data not available!
☒ keyboards/keebio/nyquist/nyquist.h: LAYOUT_ortho_4x12: Nested layout macro detected. Matrix data not available!

* error cleanup: kindakeyboards/conone65

☒ kindakeyboards/conone65: Claims to support a community layout that does not exist: 65_iso_split_bs

* error cleanup: latinpadble

☒ latinpadble: Claims to support a community layout that does not exist: pad

* error cleanup: masterworks/classy_tkl/rev_a

☒ masterworks/classy_tkl/rev_a: Claims to support a community layout that does not exist: tkl_ansi_wkl

* error cleanup: meira

⚠ meira/featherble: info.json uses alias name LAYOUT_ortho_4x12 instead of LAYOUT
⚠ meira/promicro: info.json uses alias name LAYOUT_ortho_4x12 instead of LAYOUT

* error cleanup: nopunin10did/jabberwocky

⚠ nopunin10did/jabberwocky: MANUFACTURER in config.h is overwriting manufacturer in info.json

* error cleanup: ok60

☒ ok60: Claims to support a community layout that does not exist: 60_ansi_split_bksp_rshift

* error cleanup: ok60

☒ ok60: Claims to support a community layout that does not exist: 60_ansi_split_bksp_rshift

* error cleanup: planck

☒ keyboards/planck/ez/ez.h: LAYOUT_ortho_4x12: Nested layout macro detected. Matrix data not available!
☒ keyboards/planck/ez/ez.h: LAYOUT_ortho_4x12: Nested layout macro detected. Matrix data not available!
⚠ planck/thk: DEBOUNCE in config.h is overwriting debounce in info.json
⚠ planck/thk: DEVICE_VER in config.h is overwriting usb.device_ver in info.json
⚠ planck/thk: DIODE_DIRECTION in config.h is overwriting diode_direction in info.json
⚠ planck/thk: MANUFACTURER in config.h is overwriting manufacturer in info.json
⚠ planck/thk: PRODUCT_ID in config.h is overwriting usb.pid in info.json
⚠ planck/thk: VENDOR_ID in config.h is overwriting usb.vid in info.json
⚠ planck/thk: QMK_ESC_OUTPUT in config.h is overwriting qmk_lufa_bootloader.esc_output in info.json
⚠ planck/thk: QMK_ESC_INPUT in config.h is overwriting qmk_lufa_bootloader.esc_input in info.json
⚠ planck/thk: QMK_LED in config.h is overwriting qmk_lufa_bootloader.led in info.json
⚠ planck/thk: QMK_SPEAKER in config.h is overwriting qmk_lufa_bootloader.speaker in info.json
⚠ planck/thk: Matrix pins are specified in both info.json and config.h, the config.h values win.
⚠ planck/thk: LAYOUTS in rules.mk is overwriting community_layouts in info.json
⚠ planck/thk: Feature mousekey is specified in both info.json and rules.mk, the rules.mk value wins.
⚠ planck/thk: Feature extrakey is specified in both info.json and rules.mk, the rules.mk value wins.
⚠ planck/thk: Feature console is specified in both info.json and rules.mk, the rules.mk value wins.
⚠ planck/thk: Feature command is specified in both info.json and rules.mk, the rules.mk value wins.
⚠ planck/thk: Feature sleep_led is specified in both info.json and rules.mk, the rules.mk value wins.
⚠ planck/thk: Feature nkro is specified in both info.json and rules.mk, the rules.mk value wins.
⚠ planck/thk: Feature backlight is specified in both info.json and rules.mk, the rules.mk value wins.
⚠ planck/thk: Feature rgblight is specified in both info.json and rules.mk, the rules.mk value wins.
⚠ planck/thk: Feature bluetooth is specified in both info.json and rules.mk, the rules.mk value wins.
⚠ planck/thk: Feature audio is specified in both info.json and rules.mk, the rules.mk value wins.
⚠ planck/thk: Feature encoder is specified in both info.json and rules.mk, the rules.mk value wins.
⚠ planck/thk: Feature dip_switch is specified in both info.json and rules.mk, the rules.mk value wins.
⚠ planck/thk: Feature bootmagic_lite is specified in both info.json and rules.mk, the rules.mk value wins.

* error cleanup: primekb/prime_m

☒ primekb/prime_m: Claims to support a community layout that does not exist: ortho_5x6

* error cleanup: rgbkb/sol/rev2

⚠ rgbkb/sol/rev2: RGBLED_NUM->rgblight.led_count: invalid literal for int() with base 10: '(BACKLIGHT_LEDS + FULLHAND_LEDS)'

* error log cleanup: shk9

☒ shk9: Claims to support a community layout that does not exist: ortho_3x3

* error log cleanup: sowbug

⚠ sowbug/68keys: RGBLED_NUM->rgblight.led_count: invalid literal for int() with base 10: 'DRIVER_LED_TOTAL'
⚠ sowbug/ansi_tkl: RGBLED_NUM->rgblight.led_count: invalid literal for int() with base 10: '(DRIVER_LED_TOTAL)'

* error log cleanup: torn

☒ torn: Claims to support a community layout that does not exist: split_3x6_4

* error cleanup: ymdk/np24/u4rgb6

☒ ymdk/np24/u4rgb6: Claims to support a community layout that does not exist: ortho_4x6

* error cleanup: masterworks/classy_tkl/rev_a

☒ masterworks/classy_tkl/rev_a: Claims to support a community layout that does not exist: tkl_iso_wkl

* 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>

* exclude all of handwired

* exclude more keyboards from CI

* Update default keymaps to use `layer_state_t`

* Convert binon32 as get_highest_layer in default keymaps

* Remove keymap_config extern from default keymaps

* Revert unicode

Apparently VSCode does not like unicode, I didn't actually edit these lines, so it must have been automatic... :(

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Cleanup rules.mk for 32U4 keyboards, H

* Change some boards incorrectly assumed to be halfkay

* Port DEBUG_MATRIX_SCAN_RATE to core

* Remove duplicate DEBUG_MATRIX_SCAN_RATE implementations

* Remove duplicate DEBUG_MATRIX_SCAN_RATE implementation from handwired/xealous

* Add console logic from ergodox_ez

* Add default value for IS_COMMAND for COMMAND feature

* Cleanup and consistency

* Update Templates to reflect change

* Fix IS_COMMAND in template

* Fix IS_COMMAND define

* Use consistent IS_COMMAND block in templates

* Remove unnecessary `#undef IS_COMMAND` directives

* Fix compile issue on orthodox

* Reomve IS_COMMAND option for newer boards

* Remove all existing definitions of IS_COMMAND if they use default LSHIFT and RSHIFT setting

* Remove a couple of additional IS_COMMAND defines

* Remove remaining redundant IS_COMMAND definitions

* Remove #undef IS_COMMAND from orthodox:drashna and whitefox:konstantin

* Remove multiple empty lines in modified config.h files

* Update additional boards

* Reomve IS_COMMAND from newer boards

* Update Alice keyboard

* Remove IS_COMMAND from additional boards

Jan 24th edition

* Eliminate separate slave loop

Both master and slave run the standard keyboard_task main loop now.

* Refactor i2c/serial specific code

Simplify some of the preprocessor mess by using common function names.

* Fix missing #endif

* Move direct pin mapping support from miniaxe to split_common

For boards with more pins than sense--sorry, switches.

* Reordering and reformatting only

* Don't run matrix_scan_quantum on slave side

* Clean up the offset/slaveOffset calculations

* Cut undebounced matrix size in half

* Refactor debouncing

* Minor fixups

* Split split_common transport and debounce code into their own files

Can now be replaced with custom versions per keyboard using
CUSTOM_TRANSPORT = yes and CUSTOM_DEBOUNCE = yes

* Refactor debounce for non-split keyboards too

* Update handwired/xealous to build using new split_common

* Fix debounce breaking basic test

* Dodgy method to allow a split kb to only include one of i2c/serial

SPLIT_TRANSPORT = serial or SPLIT_TRANSPORT = i2c will include only
that driver code in the binary.

SPLIT_TRANSPORT = custom (or anything else) will include neither, the
keyboard must supply it's own code

if SPLIT_TRANSPORT is not defined then the original behaviour (include
both avr i2c and serial code) is maintained.

This could be better but it would require explicitly updating all the
existing split keyboards.

* Enable LTO to get lets_split/sockets under the line

* Add docs for SPLIT_TRANSPORT, CUSTOM_MATRIX, CUSTOM_DEBOUNCE

* Remove avr-specific sei() from split matrix_setup

Not needed now that slave doesn't have a separate main loop.
Both sides (on avr) call sei() in lufa's main() after exiting
keyboard_setup().

* Fix QUANTUM_LIB_SRC references and simplify SPLIT_TRANSPORT.

* Add comments and fix formatting.

* Document the correct path to the split keyboard EEPROM files

* Document the correct path to the split keyboard EEPROM files

* add temporary compile test shell script

* add 'CONFIG_H += serial_backward_compatibility.h' into common_features.mk:SPLIT_KEYBOARD block

* add quantum/split_common/serial_backward_compatibility.h

SERIAL_PIN_PORT and other PIN define move to serial_backward_compatibility.h
SERIAL_BACKLIT_START move to split_util.h

* quantum/split_common/serial.c change to helix-serial.c style serial configuration

* add temporary file quantum/split_common/split-keyboards-list.txt

* add '#define SOFT_SERIAL_PIN D0' to keyboards/6lit/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/divergetm2/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/ergotravel/rev1/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/foobar/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/handwired/dactyl_manuform/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/handwired/qc60/config.h

* add '//#define SOFT_SERIAL_PIN D0' to keyboards/handwired/xealous/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/iris/rev*/config.h

* add '//#define SOFT_SERIAL_PIN D0' to keyboards/lets_split_eh/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/levinson/rev*/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/miniaxe/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/nyquist/rev?/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/quefrency/rev1/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/qwertyydox/config.h,keyboards/qwertyydox/rev1/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/redox/rev1/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/rorschach/rev1/config.h

* remove '#define SOFT_SERIAL_PIN D0' from quantum/split_common/serial_backward_compatibility.h

* remove temporary file quantum/split_common/split-keyboards-list.txt

* remove temporary compile test shell script

* Revert "remove temporary compile test shell script"

This reverts commit 15b0021b40.

* update quantum/split_common/compile_split_test.sh for new keyboard test

* add '#define SOFT_SERIAL_PIN D0' to keyboards/diverge3/config.h

* add '#define SOFT_SERIAL_PIN D0' to keyboards/40percentclub/25/config.h

* remove temporary compile test shell script

* update docs/config_options.md, quantum/template/avr/config.h

* fix quantum/template/avr/config.h

* fix typo  docs/config_options.md

* Keyboard: HandWired/XeaL60

* Updated rules.mk

* Mapping for layout was flipped

* Figured out how to re-map bad pins.

* Updated Keymap

* Enabled audio, Forced NKRO

* Added QMK_KEYS_PER_SCAN

* Removed more unnecessary files, since split_keyboards are in main QMK branch already.

* Simplified rules.mk in rev1

* Removed i2c from matrix.c

* Re-formatted to 4 spaces per tab,

* Changed note for NUMPAD

* Added I2C support back!

* Fixed keyboard mappings. Both sides work

* Moved i2c configuration from keymaps/default/config.h to config.h

* Changed SCL_CLOCK to 400000L

* Added DEBUG_MATRIX_SCAN_RATE for future optimization efforts

* Removed row2col code to clean up matrix.c

* Scan rate from 2100 -> 4200 by using Nop instead of waiting 30us between columns.

* Further optimized column reading via optimized_col_reader.

* Immediate key-recognition

* Switched back to own implementation of SPLIT_KEYBOARD. Will optimize so that slave interrupts master.

* Moved scanrate debug messages to another file.

* Made matrix_scanrate.c compile if CONSOLE_ENABLE is off. Updated to latest i2c.c

* Latest i2c uses a few bytes for lighting information

* Optimizations in i2c.h to determine buffer size.

* Disabled a whole bunch of features. TODO: Test that keyboard still works fine.

* Minimum #define NO_ACTION's with still working keyboard

* Fixed matrix not working due to offsets not being respected

* Added numlock button for keymap.

* Use I2C_KEYMAP_START offset

* Removed serial, Backlight and RGB support

* Removed need for split_flags.

* Added audio on and off for numlock.

* Renamed from xeal60 to xealous, simplified build system.

* Used more shared split_common code.

* Updated audio code.

* moved tone_qwerty and tone_numpad to config.h. Removed keymaps/default/config.h

* Added more shortcut keys in _FN layer. Increased debounce to 6ms due to fencepost error.

* DF used with incorrect argument. Custom_keycodes no longer required.

* Fixed bug in update_debounce_counters which was resulting in no debouncing!

* Removed unnecessary #include