* Refactor debounce counters with direct indexing
* Refactor code to use array indexing for debounce_counters
* Use global MATRIX_ROW_SHIFTER macro
* Refactor debounce algorithm with static allocation
* Converted arrays to static allocation
* Standardised use of MATRIX_ROWS_PER_HAND for array sizing
* Added Doxygen comments for primary debounce functions
* Removed debounce_free()
* Rewrite sym_defer_pr
* Modernise code using sym_defer_pk as template
* Format consistency with other current algorithms
* Use shorter SPDX-License-Identifier
* Remove ChibiOS core memory manager guard
* Keep type definition within DEBOUNCE guard
* Add change log
* Minor optimisation refactor
* Pre-calculate row_offset in per-key matrix loops
* Add inline compiler hints
* Improve readability with blank lines
* Limit elapsed time to the maximum debounce value
* Apply suggestions from code review
Declare counters with "DEBOUNCE_ELAPSED"
Co-authored-by: Joel Challis <git@zvecr.com>
* Update change log to new breaking change date
---------
Co-authored-by: Joel Challis <git@zvecr.com>
* Add fast_timer_t that is 16-bit or 32-bit based on architecture
A 16-bit timer will overflow sooner but be faster to compare on AVR.
* Avoid 8-bit timer overflows in debounce algorithms
Count down remaining elapsed time instead of trying to do 8-bit timer
comparisons.
Add a "none" implementation that is automatically used if DEBOUNCE is
0 otherwise it will break the _pk/_pr count down.
* Avoid unnecessary polling of the entire matrix in sym_eager_pk
The matrix only needs to be updated when a debounce timer expires.
* Avoid unnecessary polling of the entire matrix in sym_eager_pr
The matrix only needs to be updated when a debounce timer expires.
The use of the "needed_update" variable is trying to do what
"matrix_need_update" was added to fix but didn't work because it only
applied when all keys finished debouncing.
* Fix sym_defer_g timing inconsistency compared to other debounce algorithms
DEBOUNCE=5 should process the key after 5ms, not 6ms
* Add debounce tests
