mirror of
https://github.com/qmk/qmk_firmware
synced 2024-11-14 07:55:28 +00:00
29 lines
1.1 KiB
Markdown
29 lines
1.1 KiB
Markdown
|
Debounce algorithms belong in this folder.
|
||
|
|
Here are a few ideas
|
||
|
|
|
||
|
|
1) Global vs Per-Key vs Per-Row
|
||
|
|
* Global - one timer for all keys. Any key change state affects global timer
|
||
|
|
* Per key - one timer per key
|
||
|
|
* Per row - one timer per row
|
||
|
|
|
||
|
|
2) Eager vs symmetric vs assymetric
|
||
|
|
* Eager - any key change is reported immediately. All further inputs for DEBOUNCE ms are ignored.
|
||
|
|
* Symmetric - wait for no changes for DEBOUNCE ms before reporting change
|
||
|
|
* Assymetric - wait for different times depending on key-down/key-up. E.g. Eager key-down, DEBOUNCE ms key up.
|
||
|
|
|
||
|
|
3) Timestamp vs cycles
|
||
|
|
* old old old code waits n cycles, decreasing count by one each matrix_scan
|
||
|
|
* newer code stores the millisecond the change occurred, and does subraction to figure out time elapsed.
|
||
|
|
* Timestamps are superior, i don't think cycles will ever be used again once upgraded.
|
||
|
|
|
||
|
|
The default algorithm is symmetric and global.
|
||
|
|
Here are a few that could be implemented:
|
||
|
|
|
||
|
|
debounce_sym_g.c
|
||
|
|
debounce_sym_pk.c
|
||
|
|
debounce_sym_pr.c
|
||
|
|
debounce_sym_pr_cycles.c //currently used in ergo-dox
|
||
|
|
debounce_eager_g.c
|
||
|
|
debounce_eager_pk.c
|
||
|
|
debounce_eager_pr.c //could be used in ergo-dox!
|