forked from forks/qmk_firmware
17e7762de7
* Implemented Eager Per Row debouncing algorithm. Good for when fingers can only press one row at a time (e.g. when keyboard is wired so that "rows" are vertical) * Added documentation for eager_pr * Ported ergodox_ez to eager_pr debouncing. * Removed check for changes in matrix_scan. * Added further clarification in docs. * Accidental merge with ergodox_ez * Small cleanup in eager_pr * Forgot to debounce_init - this would probably cause seg-faults.
29 lines
1 KiB
Markdown
29 lines
1 KiB
Markdown
Debounce algorithms belong in this folder.
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Here are a few ideas
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1) Global vs Per-Key vs Per-Row
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* Global - one timer for all keys. Any key change state affects global timer
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* Per key - one timer per key
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* Per row - one timer per row
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2) Eager vs symmetric vs asymmetric
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* Eager - any key change is reported immediately. All further inputs for DEBOUNCE ms are ignored.
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* Symmetric - wait for no changes for DEBOUNCE ms before reporting change
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* Asymmetric - wait for different times depending on key-down/key-up. E.g. Eager key-down, DEBOUNCE ms key up.
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3) Timestamp vs cycles
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* old old old code waits n cycles, decreasing count by one each matrix_scan
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* newer code stores the millisecond the change occurred, and does subraction to figure out time elapsed.
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* Timestamps are superior, i don't think cycles will ever be used again once upgraded.
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The default algorithm is symmetric and global.
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Here are a few that could be implemented:
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sym_g.c
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sym_pk.c
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sym_pr.c
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sym_pr_cycles.c
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eager_g.c
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eager_pk.c
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eager_pr.c //could be used in ergo-dox!
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