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* chibios/timer: Move the 16-bit timer handling into a separate function
Extract the code which effectively makes a 32-bit tick counter from a
possibly 16-bit ChibiOS system timer into a separate function. Does
not really change the behavior of the timer API, but makes the actions
done in `timer_clear()` and `timer_read32()` more obvious.
* chibios/timer: Rename some variable to better reflect their role
* chibios/timer: Fix 32-bit tick counter overflow handling
The QMK timer API implementation for ChibiOS used a 32-bit tick counter
(obtained from the ChibiOS system timer) and then converted the value to
milliseconds to produce the timer value for QMK. However, the frequency
of the ChibiOS timer is above 1000 Hz in most cases (values of 10000 Hz
or even 100000 Hz are typically used), and therefore the 32-bit tick
counter was overflowing and wrapping around much earlier than expected
(after about 5 days for 10000 Hz, or about 12 hours for 100000 Hz).
When this wraparound happened, the QMK timer value was jumping back to
zero, which broke various code dealing with timers (e.g., deferred
executors).
Just making the tick counter 64-bit to avoid the overflow is not a good
solution, because the ChibiOS code which performs the conversion from
ticks to milliseconds may encounter overflows when handling a 64-bit
value. Adjusting just the value converted to milliseconds to account
for lost 2**32 ticks is also not possible, because 2**32 ticks may not
correspond to an integer number of milliseconds. Therefore the tick
counter overflow is handled as follows:
- A reasonably large number of ticks (the highest multiple of the
ChibiOS timer frequency that fits into uint32_t) is subtracted from
the tick counter, so that its value is again brought below 2**32.
The subtracted value is chosen so that it would correspond to an
integer number of seconds, therefore it could be converted to
milliseconds without any loss of precision.
- The equivalent number of milliseconds is then added to the converted
QMK timer value, so that the QMK timer continues to count
milliseconds as it was before the tick counter overflow.
* chibios/timer: Add a virtual timer to make 16-bit timer updates more reliable
The code which extends the 16-bit ChibiOS system timer to a 32-bit tick
counter requires that it is called at least once for every overflow of
the system timer (otherwise the tick counter can skip one or more
overflow periods). Normally this requirement is satisfied just from
various parts of QMK code reading the current timer value; however, in
some rare circumstances the QMK code may be blocked waiting for some
event, and when this situation is combined with having a rather high
timer frequency, this may result in improper timekeeping.
Enhance the timer reliability by adding a ChibiOS virtual timer which
invokes a callback every half of the timer overflow period. The virtual
timer callback can be invoked even when the normal QMK code is blocked;
the only requirement is that the timer interrupts are enabled, and the
ChibiOS kernel is not locked for an excessive time (but the timer update
will eventually work correctly if the virtual timer handling is not
delayed by more than a half of the timer overflow period).
Keeping a virtual timer always active also works around a ChibiOS bug
that can manifest with a 16-bit system timer and a relatively high timer
frequency: when all active virtual timers have delays longer than the
timer overflow period, the handling of virtual timers stops completely.
In QMK this bug can result in a `wait_ms()` call with a delay larger
than the timer overflow period just hanging indefinitely. However, when
the timer update code adds a virtual timer with a shorter delay, all
other virtual timers are also handled properly.
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* Create a build error if no bootloader is specified.
* Update builddefs/bootloader.mk
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
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* Don't make EEPROM size assumptions with dynamic keymaps.
* Add support for checking against emulated flash, error out if someone attempts to build a board without specifying EEPROM size.
* Reorder defines so that MCU is considered last.
* Refactor EEPROM definitions for simplicity.
* Fix max sizing of kabedon/kabedon980.
* Fix max sizing of mechlovin/olly/jf.
* Fix unit tests.
* Review comments, add messages with values during build failures.
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Removed the equivalent eeprom_teensy fallback. (#16020)
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(#12947)" (#15695)
This reverts commit 7f8faa429e0c0662cec34a7d60e33ca58333d6d7.
related to https://github.com/qmk/qmk_firmware/issues/15521
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* Refactor `bootloader_jump()` implementations
* Fix tests?
* Rename `atmel-samba` to `md-boot`
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* Add open-drain GPIO support.
* `qmk format-c`
* Wording.
* Remove port GPIO implementations as the only board that uses it has its own internal defs anyway. Will wait for first-class handling of ports in core before reimplementing.
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* Modified config.h default configuration
* Modified config.h default configuration
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* Move chibios defines out of header
* Make some avr defines internal
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* Config migration with removal of unnecessary items.
* Removed as per suggestion.
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* Added support for WB32 MCU
* Modified eeprom_wb32.c
* Remove the eeprom_wb32-related code
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* Add ifndef to WS2812 timing constraints
Due to the way that the PrimeKB Meridian PCB was designed, this change
is needed in order to properly adjust the LEDs.
Testing:
* Compiled primekb/meridian:default successfully
* Compiled random board (walletburner/neuron:default) successfully
* Fix linting errors
Missed some spacing
* More linting fixes
Spacing on the comments... really?
* Rename WS2812 timing parameters for clarity; add comments
* Add docs update for the WS2812 timing macros
* Fix typo on comment
* Add ifndef for WS2812_RES
* Update double backticks and table with parameters
* Move timing adjustments documentation to ws2812_drivers
* Move timings adjustment discussion to bitbang section
* Update T0H and T1H definitions in subtractions
* format
Co-authored-by: Gondolindrim <alvaro.volpato@usp.br>
Co-authored-by: zvecr <git@zvecr.com>
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* [Core] Fix RISC-V toolchain installation
The risc-v toolchain is only available on distributions based on Debian 11+
so we check for their availability before installing them.
* [Core] Fix heap symbols and syscalls for picolibc
picolibc internally uses __heap_start and __heap_end instead of the
defacto chibios linker script standard __heap_base__ and __heap_end__
therefore we introduce these symbols as an alias. Usually all memory
used within QMK is statically allocated, but some algorithms make usage
of malloc and friends.
Also the timeval struct is not defined by picolibc for syscalls, therefore it
is declared as stub.
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* Add uart_puts() and uart_gets()
* Add some docs
* Rework API
* Formatting
* Update docs/uart_driver.md
Co-authored-by: Sergey Vlasov <sigprof@gmail.com>
* Simplify a uart_write() loop
* Update platforms/avr/drivers/uart.c
Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: Sergey Vlasov <sigprof@gmail.com>
Co-authored-by: Joel Challis <git@zvecr.com>
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* Add support for building against ChibiOS svn/trunk.
* Swap to 21.6.x
* Update to latest branch revision as released version is broken.
* Updated configs.
* Conf updates.
* Updated ChibiOS
* Convert STM32L422 to actual L422 ChibiOS platform.
* Downgrade to 20.3.4 as ChibiOS 21.6.x is being aborted.
* Rollback L422-based boards.
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* Relocate ps2 protocol code
* clang
* Move makefile logic
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* Add support for RISC-V builds and GD32VF103 MCU
* Add toolchain selection in chibios.mk based on the mcu selected in
mcu_selection.mk
* Reorder and added comments to chibios.mk to have a streamlined makefile
* Add GD32VF103 mcu to possible targets for QMK.
* Add STM32 compatibility for GD32VF103 MCU, this is hacky but more efficent
then rewriting every driver.
* Add GigaDevice DFU bootloader as flash target, please note that
dfu-util of at least version 0.10 is needed.
* Add analog driver compatibility
* Add apa102 bitbang driver compatibility
* Add ws2812 bitbang driver compatibility
* Add eeprom in flash emulation compatibility
* Allow faster re-builds with ccache
* Add SiPeed Longan Nano to platform files
* Add SiPeed Longan Nano Onekeys
* Make quine compatible with other bootloaders
* Support builds with picolibc
* Add risc-v toolchain to arch and debian/ubuntu scripts
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* tmk_core: temporary fix to allow HT32 based keyboards to work without patched ChibiOS-contrib (AnnePro2)
* HT32: add spi support
Add persistent led support with eeprom (#9)
* adding HT32 support to chibios SPI master driver
update spi driver, fix bad merging with master
* HT32: fix formatting
HT32: Fix formatting: tmk_core/protocol/chibios/usb_main.c
Co-authored-by: Drashna Jaelre <drashna@live.com>
* HT32: Apply suggestions from fauxpark's code review
Co-authored-by: Ryan <fauxpark@gmail.com>
* HT32: update spi driver
* ht32: apply code review suggestions, remove old workaround
Co-authored-by: tech2077 <tech2077@gmail.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
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* Enable CLI flashing via mdloader
* remove flag
* Update qmk flash help
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* Move Audio drivers from quantum to platform drivers folder
* fix path for audio drivers
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
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* Initial pass of F405 support
* remove some conf files
* docs
* clang
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* Add RGBW support to PWM and SPI drivers for ChibiOS
* Apply suggestions from code review
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
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* Add i2c defaults for Convert to Proton C
* Hide default defines behing CTPC check
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