* Ensure setPinInput actually sets input high-z
* Fixed _PIN_ADDRESS Macro arguments
as recommended by vomindoraan
* Fixed instances of setInput to use new behavour
* Changed kmac matrix to use input with pullups
* Update keyboards/gh60/revc/revc.h
Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Fixed input state for unselect_rows
* fixed merge conflict
* Updated all instances of older uses of setPinInput()
* Fixed naming mistake
Co-authored-by: fauxpark <fauxpark@gmail.com>
- uprintf -> dprintf
- Fix atsam "vendor" eeprom.
- Bump Kinetis K20x to 64 bytes, too.
- Rollback Kinetis to 32 bytes as partitioning can only be done once. Add warning about changing the value.
- Change RAM-backed "fake" EEPROM implementations to match eeconfig's current usage.
- Add 24LC128 by request.
* Run clang-format manually to fix recently changed files
* Run clang-format manually to fix recently changed files - revert template files
* Run clang-format manually to fix recently changed files - format off for ascii_to_keycode_lut
* Enforce definition of `DIODE_DIRECTION` for non-custom matrix boards
* Define diode direction for failing boards
* Matching parentheses
* Put onekey diode directions in top level config
* Define default HSV and speed for RGB matrix.
* Documentation for configuration values RGB_MATRIX_STARTUP_HUE, RGB_MATRIX_STARTUP_SAT and RGB_MATRIX_STARTUP_VAL.
* Document RGB_MATRIX_STARTUP_SPD.
* Preserve the ordering.
* Left-right gradient.
* Update the comment to match the new functionality.
* CPP does integer division so this round is not necessary.
* The x-range is actually 224, update comment and use bit-shifting again.
* Update docs with gradient left-right effect and associated "DISABLE" option.
* Move some common matrix code to a common location
* Refactor some 'custom_matrix_helper' logic to use custom matrix lite
* Fix build for kinesis/stapelberg - abuse of vpath was picking up matrix.c from core when custom matrix was enabled
* Add validation for CUSTOM_MATRIX
* VIA Refactor
* Remove old code
* review changes
* review changes
* Fix cannonkeys/satisfaction75/prototype:via build
* Add via.h to quantum.h
* Move backlight init to after backlight config load
* Merge branch 'master' into via_refactor_pr
* Update user's rules.mk to new way of enabling VIA
* Added id_switch_matrix_state
* Review changes
* Use White channel on RGBW LEDs
Co-authored-by: kwerdenker <sebastian.spindler@gmail.com>
* Manually apply white channel to array
* Move where convert_rgb_to_rgbw is called
* Fix type for rgbw led struct
* Add changes to Ergodox EZ
can revert if deemed necessary
* Revert "Add changes to Ergodox EZ"
This reverts commit aa44db198d40d758ca10470eb94615513592d1dd.
* Revert "Fix type for rgbw led struct"
This reverts commit c5c744cba040201cc0d124400773cf13f8a2cf22.
* Revert "Move where convert_rgb_to_rgbw is called"
This reverts commit cd7f17caf6dd30731c54b3be54490fe4519444f9.
* Revert changes and fix up functions
* Enable white channel for Ergodox EZ as well
* Only run conversion of rgblight is enabled
Co-authored-by: kwerdenker <sebastian.spindler@gmail.com>
* Add rules.mk defaults for f103,f072,f042
* Add rules.mk defaults for f103,f072,f042 - remove comment
* Add rules.mk defaults for f103,f072,f042 - align USE_FPU
* Reset MCU to avoid build issues
* Move essential config values to top and remove ability for override
* Align DFU_SUFFIX_ARGS order with DFU_ARGS
* Add central location for chibios defines
* Add central location for chibios defines - actually add files this time....
* Add Copyright header
* Update include order to resolve i2cv1 build errors
* Move rgb keycode logic to process_keycode
* Fixes for rgb matrix
* Fixes for mxss
* Fix inc/dec logic, add comments
* Fix return RAINBOW_SWIRL logic
* stop external use of rgb helper functions
* merge fix
* Fix 'defined but not used' when all animations are disabled
* Set proper AVR part for USBasp avrdude flashing
* Remove `PROGRAM_CMD` stuff from rules.mk as they should not be needed anymore
* Missed the Plaid readme
* Remove PROGRAM_CMD from Mysterium
* Add shift-to-invert to remaining directional RGB_* keycode pairs
RGB_MODE_FORWARD / RGB_MODE_REVERSE invert their functions when shift is held.
This change adds the same capabilities to the remaining directional RGB_*
keycode pairs. This improves consistency and provides full RGB control in a
keymap containing only one keycode from each pair.
* remove redundant variable
* fix typo
* Fix more typos
Flyspell is on now I swear!
* idea
* progress
* more stuff
* wip
* wip
* last couple of keycodes you can move safely
* Update quantum/quantum.c
Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Put back RGB_MODE_BREATHE
* Fix unicode in comments
Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Remove separate RGBW implementation for a unified function
* Set White to 0 in RGBW LEDs
This is just to get this working, later, proper brightness can be handled elsewhere.
* Use us instead of nanoseconds(?) since it renders correctly on web
* Remove RGBW function from arm/ws2812.h
* Remove RGBW function from arm/ws2812.c
* Formatting changes
* Add doc info
* Initial ARM bitbang ws2812 driver
* Unify chibios platform to run rgblight_task
* Remove 'avr only' comments from ws2812 docs
* Remove 'avr only' comments from ws2812 docs
* Unify chibios platform to run rgblight_task - review comments
* Remove debug flags from keymap
* Add comments from review
* Add defines for STM32L0XX
* Attempt to get arm ws2812 working on multiple gcc versions
* Convert Dynamic Macro to a Core Feature
This imports the code from Dynamic Macro into the core code, and handles it, as such.
This deprecates the old method but does not remove it, for legacy support. This way, no existing user files need to be touched.
Additionally, this reorganizes the documentation to better reflect the changes.
Also, it adds user hooks to the feature so users can customize the existing functionality.
Based heavily on and closes#2976
* Apply suggestions from code review
Co-Authored-By: fauxpark <fauxpark@gmail.com>
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Cleanup based on feedback
* Add short-form keycodes and document them
- add short-form keycodes to quantum/quantum_keycodes.h
- document the new aliases in docs/feature_dynamic_macros.md
* Add Dynamic Macros section and keycodes to docs/keycodes.md
* Make anti-nesting optional
* Add documentation for DYNAMIC_MACRO_NO_NESTING option
* Fix Merge artifacts
* Fix formatting typo in docs
Co-Authored-By: James Young <18669334+noroadsleft@users.noreply.github.com>
* Remove DYNAMIC_MACRO_RANGE as it's not needed
* Fix includes and layer var type
* Fix edge case when using One Shot Layer with Auto Shift, and it not triggering the cleanup
* Remove junk code (no longer used)
* Replace `(un)register_code` calls with `tap_code` where appropriate
* Fixed up Switch check to be more readable (less verbose)
* Simplified modifier check (if it comes back non-zero, there are mods)
* Add additional function calls for autoshift settings
* Made all variables static, since there are function calls to get their status
* Fixed up documentation
* Re-add special characters that were missed
* formatting pass
* Initial migration of software PWM backlight
* First pass at backlight driver docs
* Correct driver name in docs
* Run backlight_task when using BACKLIGHT_PINS
* Resolve backlight docs TODOs
* Fix held key getting stuck when NKRO is toggled
* Updated file to latest qmk version and added fix to cases MAGIC_UNHOST_NKRO & MAGIC_HOST_NKRO as well.
* Revert merged quantum.c
* Avoid NO_USB_STARTUP_CHECK - Disable USB as checks seem to enable it somehow
* Update quantum/split_common/split_util.c
Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Also remove NO_USB_STARTUP_CHECK from vitamins_included/rev1
* Move tmk_core/common/backlight to quantum/backlight
* Add guards to backlight inclusion
* Add guards to backlight inclusion
* Update backlight guards on clueboard/60
* Use full paths to avoid vpath issues
* Use .template file extension for keyboard template files
* Filter out .template files completely before passing to clang-format
* Undo file extension stuff; just ignore quantum/template dir
* remove IT_PIPE duplicate and add IT_GRAD
IT_PIPE was declared 2 times, ones as ° and once as |. I changed the first declaration and called it IT_GRAD. I even fixed the definition because the ° in Italian is obtained with LSFT(IT_AACC)
* rename IT_GRAD to IT_DEGR
* add missing plus_and_minus
* fix missing IT_ACUT definition
* change KC_LALT(KC_LSFT to LALT(LSFT
* Fix alignment
* remove leftover
* fix issue generated with chars while pushing
* fix typo
* fix LCBR and RCBR
* fix euro symbol
* fix RBRC
* change IT_LESS form KC_NUBS to KC_GRAVE
* add IT_TILDE and change IT_GRAV to IT_GRAVE
* add missing legends for accented vowels
* format for readability
* revert to commit befor I edit it
* initial commit
* edited to be easier to compare to _ansi.h
* remove keymap_italian_osx_iso.h and rename with edits keymap_italian_osx_ansi.h to keymap_italian_osx.h
I found out there were no difference at all
* fix missing #endif
* rename quantum/keymap_extras/keymap_italian_osx.h to quantum/keymap_extras/keymap_italian_ansi.h
Now this file is a clone of the keymap_italian.h that appears to be working only for ISO keyboards. It also contains a few improvements for IT_PIPE (defined two times) and IT_ACUT (missing definition). Additionally it redefines LCBR and RCBR to LSFT(IT_LBRC) and LSFT(IT_RBRC)
* rename file
* redefines IT_BKSL and IT_PIPE based on KC_BKSL
* add new osx_iso and osx_ansi version for italian.h and align BKSL to BSLS, fix double definition of PIPE
* made tapdance dual_role general
* updated original dual_role functionality
* added toggling layer example
* Fix dual role and add alias
* Update docs about new layer tap dances
* Fix up based on feedback
* provide means to turn on RTP mode and set the amplitude
* new keycode HPT_CONT to turn RTP off/on
* introduce new keycodes HPT_CONI, and HPT_COND for Haptic Continuous Increase and Decrease
* support for continuous mode amplitude increase and decrease
* code cleanup
* update docs to reference new keycodes and functionality
* don't touch the keymaps
* add function prototypes
* add proper guards
* cleanup guards
* remove extra reserved
* Updated encoder.c so that split encoders are indexed based on left hand encoders first.
This ensures when swapping master sides that code logic based on encoder index doesn't change.
PR Review fixes
* Removed extra define
* Add Dip Switches as a core feature
* Add documentation for Dip Switch feature
* Update Preonic Rev3 to use new feature and remove custom matrix
* Apply suggestions from code review
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Remove custom matrix line completely
Rather than just disabling it
Co-Authored-By: fauxpark <fauxpark@gmail.com>
* DIP changes
Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Use better check for DIP Switch configuration
* Add to show features
* Add bitmask callback for dip switch
* Fix OLKB Boards dip switch config
* Update docs to include bitmask example
* Fix comments/documentation
Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Fix issues with docs and use example from @tuzonghua
* Fix wording
Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Fix example to use proper formatting
Bad, BAAAAAAD drashna!!!
* Handle dip switch initialization better
* A little easier to read the definition of the GPIO control macro for AVR.
No change in build result.
* Changed to not use GNU statement expression extension.
No change in build result.
* Modified split_common/serial.c to use qmk_firmware standard GPIO control macro.
No change in build result.
* fix PE6 -> E6
* remove some space
* add some comment to config_common.h
* Changed split_common/serial.c to use a newer version of qmk_firmware standard GPIO control macro.
* Additional changes for Layer State typedef compatibility
* Replace biton32 with get_highest_layer in docs
* Change additional layer structure code
* Fix uGFX reference issue
* Remove dynamic_keymap check
* Where did all these extra spaces come from
Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Add MAGIC_SWAP_CONTROL_LGUI and MAGIC_UNSWAP_CONTROL_LGUI keycodes
Key codes to swap and unswap the control and windows/cmd keys
* Fix issues with pull request #6110
Renamed swap/unswap lctl and lgui key codes, added key codes to swap/unswap rctl and rgui, and moved new bool inside keycode_config.h struct to the end
* Move new keycodes to the end of the enum (#6110)
* add cases for swapped control and OS keys to mod_config (#6110)
* Add new keycodes to feature_bootmagic.md (#6110)
* Add R+L swap codes to keep in parity with AG_* codes
* Extend Magic range check to include new magic codes
* Update audio docs
* Combine 2 byte ranges into 1 word for EECONFG
Fix names for Keymap config EEPROM
* Update docs/feature_bootmagic.md
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Update docs/feature_bootmagic.md
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Update docs/feature_bootmagic.md
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Update docs/feature_bootmagic.md
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* remove led layer code
* enable PWM on STM32F303
* Unusable PWM code
* Updated PWM Stuff?
* PWM Semi-working
* Both LEDs working at the same time
* Update names
* Add led level functions
* Add LED levels and persistent settings
* Revert change due to issues with timing related code
* Review feedback and minor cleanup
* Add some defaults for ATmega32A to mcu_selection.mk
* Remove boilerplate from templates
* Relax INTERRUPT_CONTROL_ENDPOINT and PROGRAM_CMD
* Apply suggestions from code review
Co-Authored-By: Drashna Jaelre <drashna@live.com>
* Improve backlight PWM pin support
* I accidentally an equals sign
* Another typo
* Order by pin number
* Throw an error if backlight pin is C4 or C5 on 16/32U4
* Use else for clarity
* Minor alignment adjustments
* Update IS_COMMAND definition in templates to use MOD_MASK_SHIFT
* Update IS_COMMAND in docs
* Update IS_COMMAND default definition in tmk_core
* Update table in Command docs based on suggestion
Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Remove the need to set NUM_OF_ENCODERS
Instead, calculate the size of the array, and use that instead
* Add hack for split common support
* Remove NUM_OF_ENCODERS from keyboard config
Can be reverted, if needed
* Store backlight breathing state in EEPROM
* Reduce backlight_config.level from 6 bits to 4 (max 15 "on" levels)
* Error out if BACKLIGHT_LEVELS is > 15
* Remove mention of default backlight pin in rules.mk template
* Remove pointless comment
Zeroing out spd in eeconfig_init_quantum
Switched to block read & update
Update tmk_core/common/eeconfig.h
Co-Authored-By: Drashna Jaelre <drashna@live.com>
Fixing init compile error
Update eeconfig.c
Dead / Missing API cleanup
alignment
* Add out of bound check for Leader Key sequence array
* A shot at advanced C stuff for Leader Key optimization
* Revert most changes
* Change default back
* Include string.h if compiling for ARM
* Use sizeof instead of a number
* Align sendstring LUTs to 9 characters wide
* Replace 0 with XXXXXXX
* Use decimal 128 for LUT size
* Align heading comments
* Add ASCII table comments
* Add missing AltGr LUTs and adjust keycode LUTs accordingly
* Use pragma once
* Correct a couple more keycodes
* Capitalise "BÉPO"
* Also clean up the default tables
* Tidy up Belgian and Norman LUTs
* Add user-overridable callback for cancelling UCIS input
To clean up things from qk_ucis_start_user() for instance.
* restore lost newline to quantum/process_keycode/process_ucis.c
Co-Authored-By: shinmai <aapo.saaristo@gmail.com>
* Fix up GPIO macros
* Fix up send string macros
`string` arguments must not be parenthesized
* Fix up miscellaneous macros
* Make indentation uniform (4 spaces)
* Make #ifdef vs #if defined usage consistent
* Reorder standard includes
* Revert indentation changes as per review comments
* Revert #if defined(__AVR__) → #ifdef __AVR__ change
* Change 2 space indent to 4 spaces on a couple of lines
* Replace include guard with #pragma once
* Fix breathing always on for soft PWM
* Remove reference to hardware PWM pins in BACKLIGHT_BREATHING description
Now, breathing will only be unsupported when Timers 1 and 3 are both used by Audio
* Document BACKLIGHT_ON_STATE and its purpose
* Fix backlight breathing on C6
* Account for ATmega32A's single TIMSK register (MT40)
* Document hardware PWM on D4 for ATmega32A
* Add C6 and D4 to BACKLIGHT_PIN description
* Remove all Copyrighted Sounds and Songs
This removes any song that has a license/copyright on them.
Additionally, it adds the license information for any song that remains.
* Add removed song list
Can be reverted if we'd rather do that
* Use newer coding conventions
* Fix typo
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Revert copyright date
* Update quantum/audio/song_list.h
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* belgian layout had no sendstring definition
* backtick was not defined for belgian sendstring
* slash definition was wrong for belgian sendstring
Co-Authored-By: fauxpark <fauxpark@gmail.com>
* use BE_ keys whenever we can
Co-Authored-By: fauxpark <fauxpark@gmail.com>
* ^ can be sent as a normal key (not a dead key) with altgr+para
* Adding an AUDIO_CLICKY_DELAY_DURATION configurable value to the AUDIO_CLICKY feature.
* Tweaking my community keymap to work better with my rev 4 planck.
* Typedef'ed layer_state_t to uint32_t.
This enables future work with layer_state_t to uint8_t for optimization purposes.
* Removed accidental xeal60 commit
* Revert to egyptian brackets, added sizeof(layer_state_t) so when layer_state_t is redefined it will automagically work.
* Add additional typedefs
* Add checks for setting layer state
* Update tmk_core/common/action_layer.h
Co-Authored-By: alex-ong <the.onga@gmail.com>
* Revert commit.
* 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 5680cddd012d68b2db75a532862a7fef250f8973.
* trying to make my global keymap
* refactoring the old keymap using userspace
* getting there
* move readme and remove community layout
* use pragma once instead of ifndefs
* just make iris work
* iris decent
* better naming
* add some modifiers on the home row
* use symbol and sysctl layers
* fix up
* a bit faster
* add < and > on symbol layer
* apparently im not using z all that much..
* okok
* fix up stuff
* led init is back
* bring back led indicators
* Update keyboards/ergotravel/keymaps/pvinis/config.h
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* not needed
* not needed
* delete these for now, until I use the userspace code
* remove katamari from here. made a new pr for it
* lower case
* drashna suggestion :)
* move files to correct place
* fix missing command
* Added check for pressed to clear space cadet
* Found some docs to update
* Update docs/quantum_keycodes.md
Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Changes from PR
* clean up rgb matrix extern usage
Moved rgb matrix boiler plate into macros
Rebased onto typing heatmap pr
* Fixing the reversed frame buffer access in digital rain
* Fixing digital rain & typing heatmap if keyreactive effects are not enabled
* Apply suggestions from code review
Co-Authored-By: Drashna Jaelre <drashna@live.com>
* Adding parenthesizes to DRIVER_LED_TOTAL where necessary
* Updated docs
* added notes about parentheses
* Norman layout with Lower and Raise layers working
* Add keymap_extra def for Norman layout
* Re-org'ed the modifiers as explained in the Readme
* Corrected colour legend for KLE that the Readme links to
* Use #pragma once in header file
* Use pragma once and move user config to config.h
* Move definitions to the right file and correct link in Readme
* Move def of NM_COLN to the logical place in header file
* Add sendstring_norman.h for when the laptop layout is not QWERTY
* Update quantum/keymap_extras/sendstring_norman.h
Co-Authored-By: lehoff <torben.lehoff@gmail.com>
* Initial conversion of the rgb_led struct
* Converting last keyboard & updating effects to take advantage of the new structure
* New struct should not be const
* Updated docs
* Changing define ___ for no led to NO_LED
* Missed converting some keymap usages of the old struct layout
slave backlight was always on - as get_backlight_level() doesn't
indicate if the backlight is enabled or not.
also updated the corosponding code for serial transport to stop peeking
directly at 'internal' backlight_config structure.
* Expose unicode_saved_mods
* Add UNICODEMAP shift pair functionality and XS keycode
* Add XS to keycode reference documentation
* Pick pair index based on both Shift and Caps Lock state
* Add XS to Unicode feature docs
* Clean up process_unicode* headers
* Extract unicode_map index calculation into function
* Pick pair index as XOR rather than OR of Shift and Caps states
* unicode_input_start() has to be called before the unicode_map index is calculated
* Replace unicodemap_input_error() with more generic unicode_input_cancel()
* Replace register+tap+unregister with tap_code16(LCTL(LSFT(KC_U)))
* UNICODE_OSX_KEY → UNICODE_KEY_OSX, UNICODE_WINC_KEY → UNICODE_KEY_WINC
* Make keycode range checks more robust
* Fix keycode range checks for different input modes
* Add UNICODE_KEY_LNX, update docs
* QK_UNICODEMAP_SHIFT → QK_UNICODEMAP_PAIR
* XS → XP, update docs
* Tweak Unicode docs
* Use recently added MOD_MASK_SHIFT and IS_HOST_LED_ON helpers
* Update Unicode table in docs/keycodes.md
* Update Unicode docs per review comments
* Replace references to Mac OS X with macOS in Unicode docs
* As of v0.9.0, WinCompose supports all possible code points
* Expand descriptions in XP docs
* Update keycode table and cycling docs
* Further expand cycling docs
* Add DFU Suffix for ARM boards
* Blindly flash DFU SUFFIX ARGS for now
* Fix commented out check
* Fix DFU Suffix Argument check
Thank you jack!
* Update Travis CI Scripts to include dfu-util
So we can get dfu-suffix as well
* Manually add dfu-suffix package
* Use external repo for newer version of dfu-util
One that includes dfu-suffix
* Update .travis.yml
* Silence unnecessary output from dfu-suffix
* 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.
* Adjusted the linear led table and hsv_to_rgb to better handle 255 hue
* small math adjustments to better handle specific uint8_t rounding and overflows
* Revamped custom effects approach
See docs for example usage
* push-up RGB Matrix default mode
Override default effect using RGB_MATRIX_STARTUP_MODE.
Useful on boards without EEPROM support
(*cough* Massdrop ALT/CTRL *cough*)
* update docs
With my XD60, I noticed that when typing the backlight was flickering.
The XD60 doesn't have the backlight wired to a hardware PWM pin.
I assumed it was a timing issue in the matrix scan that made the PWM
lit the LED a bit too longer. I verified it because the more keys that
were pressed, the more lighting I observed.
This patch makes the software PWM be called during CPU interruptions.
It works almost like the hardware PWM, except instead of using
the CPU waveform generation, the CPU will fire interruption
when the LEDs need be turned on or off.
Using the same timer system as for hardware PWM, when the counter
will reach OCRxx (the current backlight level), an Output Compare
match interrupt will be fired and we'll turn the LEDs off.
When the counter reaches its maximum value, an overflow interrupt
will be triggered in which we turn the LEDs on.
This way we replicate the hardware backlight PWM duty cycle.
This gives a better time stability of the PWM computation than pure
software PWM, leading to a flicker free backlight.
Since this is reusing the hardware PWM code, software PWM also supports
backlight breathing.
Note that if timer1 is used for audio, backlight will use timer3, and if
timer3 is used for audio backlight will use timer1.
If both timers are used for audio, then this feature is disabled and we
revert to the matrix scan based PWM computation.
Signed-off-by: Brice Figureau <brice@daysofwonder.com>
