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Avoid 8-bit timer overflows in debounce algorithms (#12240)

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* 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
This commit is contained in:
Simon Arlott 2021-06-09 08:23:21 +01:00 • committed by GitHub
parent f287597c19
commit b829a1d264
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20 changed files with 1588 additions and 92 deletions
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testlist.mk
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@ -1,6 +1,7 @@
TEST_LIST = $(notdir $(patsubst %/rules.mk,%,$(wildcard $(ROOT_DIR)/tests/*/rules.mk)))
FULL_TESTS := $(TEST_LIST)
include $(ROOT_DIR)/quantum/debounce/tests/testlist.mk
include $(ROOT_DIR)/quantum/sequencer/tests/testlist.mk
include $(ROOT_DIR)/quantum/serial_link/tests/testlist.mk