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author | Simon Arlott <[email protected]> | 2021-06-09 08:23:21 +0100 |
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committer | GitHub <[email protected]> | 2021-06-09 17:23:21 +1000 |
commit | b829a1d2648abd0751e9d3505554547faf643425 (patch) | |
tree | 35ba811a62feffd88759d0a53c1d6353d5d6d88a /quantum/debounce/none.c | |
parent | f287597c19dc926c7c28cefa32ffc3f0b4fdba7f (diff) | |
download | qmk_firmware-b829a1d2648abd0751e9d3505554547faf643425.tar.gz qmk_firmware-b829a1d2648abd0751e9d3505554547faf643425.zip |
Avoid 8-bit timer overflows in debounce algorithms (#12240)
* 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
Diffstat (limited to 'quantum/debounce/none.c')
-rw-r--r-- | quantum/debounce/none.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/quantum/debounce/none.c b/quantum/debounce/none.c new file mode 100644 index 0000000000..b03892bc5b --- /dev/null +++ b/quantum/debounce/none.c @@ -0,0 +1,31 @@ +/* Copyright 2021 Simon Arlott + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "matrix.h" +#include "quantum.h" +#include <stdlib.h> + +void debounce_init(uint8_t num_rows) {} + +void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed) { + for (int i = 0; i < num_rows; i++) { + cooked[i] = raw[i]; + } +} + +bool debounce_active(void) { return false; } + +void debounce_free(void) {} |