diff options
Diffstat (limited to 'quantum')
| -rw-r--r-- | quantum/debounce.c | 52 | ||||
| -rw-r--r-- | quantum/debounce.h | 25 | ||||
| -rw-r--r-- | quantum/debounce/debounce_eager_pk.c | 123 | ||||
| -rw-r--r-- | quantum/debounce/debounce_sym_g.c | 58 | ||||
| -rw-r--r-- | quantum/debounce/readme.md | 28 | ||||
| -rw-r--r-- | quantum/matrix.c | 9 |
6 files changed, 233 insertions, 62 deletions
diff --git a/quantum/debounce.c b/quantum/debounce.c deleted file mode 100644 index 929023ab2d..0000000000 --- a/quantum/debounce.c +++ /dev/null @@ -1,52 +0,0 @@ - -#include "matrix.h" -#include "timer.h" -#include "quantum.h" - -#ifndef DEBOUNCING_DELAY -# define DEBOUNCING_DELAY 5 -#endif - -void debounce_init(uint8_t num_rows) { -} - -#if DEBOUNCING_DELAY > 0 - -static bool debouncing = false; - -void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed) { - static uint16_t debouncing_time; - - if (changed) { - debouncing = true; - debouncing_time = timer_read(); - } - - if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) { - for (uint8_t i = 0; i < num_rows; i++) { - cooked[i] = raw[i]; - } - debouncing = false; - } -} - -bool debounce_active(void) { - return debouncing; -} - -#else - -// no debounce -void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed) { - if (changed) - { - for (uint8_t i = 0; i < num_rows; i++) { - cooked[i] = raw[i]; - } - } -} - -bool debounce_active(void) { - return false; -} -#endif diff --git a/quantum/debounce.h b/quantum/debounce.h index 360af77e78..7fe2d693d1 100644 --- a/quantum/debounce.h +++ b/quantum/debounce.h @@ -1,11 +1,26 @@ #pragma once +/* +Copyright 2017 Alex Ong<the.onga@gmail.com> +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" + +void debounce_init(void); //every debounce algorithm will have unique storage needs. // raw is the current key state -// on entry cooked is the previous debounced state -// on exit cooked is the current debounced state +// cooked is the debounced input/output key state // changed is true if raw has changed since the last call -void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed); +void debounce(matrix_row_t raw[], matrix_row_t cooked[], bool changed); bool debounce_active(void); - -void debounce_init(uint8_t num_rows);
\ No newline at end of file diff --git a/quantum/debounce/debounce_eager_pk.c b/quantum/debounce/debounce_eager_pk.c new file mode 100644 index 0000000000..e6e8bfd317 --- /dev/null +++ b/quantum/debounce/debounce_eager_pk.c @@ -0,0 +1,123 @@ +/* +Copyright 2017 Alex Ong<the.onga@gmail.com> +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/>. +*/ + +/* +Basic per-key algorithm. Uses an 8-bit counter per key. +After pressing a key, it immediately changes state, and sets a counter. +No further inputs are accepted until DEBOUNCE milliseconds have occurred. +*/ + +#include "debounce.h" +#include "matrix.h" +#include "timer.h" + +#ifndef DEBOUNCE + #define DEBOUNCE 5 +#endif + + +#if (MATRIX_COLS <= 8) +# define ROW_SHIFTER ((uint8_t)1) +#elif (MATRIX_COLS <= 16) +# define ROW_SHIFTER ((uint16_t)1) +#elif (MATRIX_COLS <= 32) +# define ROW_SHIFTER ((uint32_t)1) +#endif + + + +#define debounce_counter_t uint8_t + +static matrix_row_t matrix_debounced[MATRIX_ROWS]; +static debounce_counter_t debounce_counters[MATRIX_ROWS*MATRIX_COLS]; + +#define DEBOUNCE_ELAPSED 251 +#define MAX_DEBOUNCE (DEBOUNCE_ELAPSED - 1) + +void update_debounce_counters(uint8_t current_time); +void transfer_matrix_values(uint8_t current_time); + +void matrix_debounce_init(void) +{ + for (uint8_t r = 0; r < MATRIX_ROWS; r++) + { + matrix_debounced[r] = 0; + } + + int i = 0; + for (uint8_t r = 0; r < MATRIX_ROWS; r++) + { + for (uint8_t c = 0; c < MATRIX_COLS; c++) + { + debounce_counters[i++] = DEBOUNCE_ELAPSED; + } + } +} + +void matrix_debounce(void) +{ + uint8_t current_time = timer_read() % MAX_DEBOUNCE; + update_debounce_counters(current_time); + transfer_matrix_values(current_time); +} + +//If the current time is > debounce counter, set the counter to enable input. +void update_debounce_counters(uint8_t current_time) +{ + debounce_counter_t *debounce_pointer = debounce_counters; + for (uint8_t row = 0; row < MATRIX_ROWS; row++) + { + for (uint8_t col = 0; col < MATRIX_COLS; col++) + { + if (*debounce_pointer != DEBOUNCE_ELAPSED) + { + if (TIMER_DIFF(current_time, *debounce_pointer, MAX_DEBOUNCE) >= + DEBOUNCING_DELAY) { + *debounce_pointer = DEBOUNCE_ELAPSED; + } + } + debounce_pointer++; + } + } +} + +// upload from raw_matrix to final matrix; +void transfer_matrix_values(uint8_t current_time) +{ + debounce_counter_t *debounce_pointer = debounce_counters; + for (uint8_t row = 0; row < MATRIX_ROWS; row++) + { + matrix_row_t existing_row = matrix_debounced[row]; + matrix_row_t raw_row = matrix_get_row(row); + + for (uint8_t col = 0; col < MATRIX_COLS; col++) + { + matrix_row_t col_mask = (ROW_SHIFTER << col); + bool final_value = raw_row & col_mask; + bool existing_value = existing_row & col_mask; + if (*debounce_pointer == DEBOUNCE_ELAPSED && + (existing_value != final_value)) + { + *debounce_pointer = current_time; + existing_row ^= col_mask; //flip the bit. + } + debounce_pointer++; + } + matrix_debounced[row] = existing_row; + } +} + + + +//Implementation of no debounce. diff --git a/quantum/debounce/debounce_sym_g.c b/quantum/debounce/debounce_sym_g.c new file mode 100644 index 0000000000..c206f28647 --- /dev/null +++ b/quantum/debounce/debounce_sym_g.c @@ -0,0 +1,58 @@ +/* +Copyright 2017 Alex Ong<the.onga@gmail.com> +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/>. +*/ + +/* +Basic global debounce algorithm. Used in 99% of keyboards at time of implementation +When no state changes have occured for DEBOUNCE milliseconds, we push the state. +*/ +#include "debounce.h" +#include "matrix.h" +#include "timer.h" +#ifndef DEBOUNCE + #define DEBOUNCE 5 +#endif + +static bool debouncing = false; +static uint16_t debouncing_time; + +void debounce_init(void) {} + +#if DEBOUNCE > 0 +void debounce(matrix_row_t raw[], matrix_row_t cooked[], bool changed) +{ + if (changed) { + debouncing = true; + debouncing_time = timer_read(); + } + + if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) { + for (int i = 0; i < MATRIX_ROWS; i++) { + cooked[i] = raw[i]; + } + debouncing = false; + } +} +#else //no debouncing. +void debounce(matrix_row_t raw[], matrix_row_t cooked[], bool changed) +{ + for (int i = 0; i < MATRIX_ROWS; i++) { + cooked[i] = raw[i]; + } +} +#endif + +bool debounce_active() { + return debouncing; +} + diff --git a/quantum/debounce/readme.md b/quantum/debounce/readme.md new file mode 100644 index 0000000000..1a77d44df5 --- /dev/null +++ b/quantum/debounce/readme.md @@ -0,0 +1,28 @@ +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! diff --git a/quantum/matrix.c b/quantum/matrix.c index 71292db511..8fc4175bde 100644 --- a/quantum/matrix.c +++ b/quantum/matrix.c @@ -51,9 +51,8 @@ static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS; #endif /* matrix state(1:on, 0:off) */ -static matrix_row_t raw_matrix[MATRIX_ROWS]; - -static matrix_row_t matrix[MATRIX_ROWS]; +static matrix_row_t raw_matrix[MATRIX_ROWS]; //raw values +static matrix_row_t matrix[MATRIX_ROWS]; //debounced values #if (DIODE_DIRECTION == COL2ROW) static void init_cols(void); @@ -123,7 +122,7 @@ void matrix_init(void) { raw_matrix[i] = 0; matrix[i] = 0; } - debounce_init(MATRIX_ROWS); + debounce_init(); matrix_init_quantum(); } @@ -144,7 +143,7 @@ uint8_t matrix_scan(void) } #endif - debounce(raw_matrix, matrix, MATRIX_ROWS, changed); + debounce(raw_matrix, matrix, changed); matrix_scan_quantum(); return 1; |