Eager Per Row Debouncing added (added to Ergodox) (#5498)
* 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.planck_ez_wdg
Alex Ong
6 years ago
committed by
Drashna Jaelre
parent
e1e08a494b
commit
17e7762de7
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/*
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Copyright 2019 Alex Ong<the.onga@gmail.com> |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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/*
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Basic per-row algorithm. Uses an 8-bit counter per row. |
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After pressing a key, it immediately changes state, and sets a counter. |
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No further inputs are accepted until DEBOUNCE milliseconds have occurred. |
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*/ |
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#include "matrix.h" |
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#include "timer.h" |
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#include "quantum.h" |
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#include <stdlib.h> |
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#ifndef DEBOUNCE |
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#define DEBOUNCE 5 |
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#endif |
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#define debounce_counter_t uint8_t |
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static debounce_counter_t *debounce_counters; |
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#define DEBOUNCE_ELAPSED 251 |
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#define MAX_DEBOUNCE (DEBOUNCE_ELAPSED - 1) |
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void update_debounce_counters(uint8_t num_rows, uint8_t current_time); |
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void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, uint8_t current_time); |
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//we use num_rows rather than MATRIX_ROWS to support split keyboards
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void debounce_init(uint8_t num_rows) |
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{ |
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debounce_counters = (debounce_counter_t*)malloc(num_rows*sizeof(debounce_counter_t));
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for (uint8_t r = 0; r < num_rows; r++) |
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{
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debounce_counters[r] = DEBOUNCE_ELAPSED; |
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} |
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} |
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void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed) |
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{ |
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uint8_t current_time = timer_read() % MAX_DEBOUNCE; |
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update_debounce_counters(num_rows, current_time); |
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transfer_matrix_values(raw, cooked, num_rows, current_time); |
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} |
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//If the current time is > debounce counter, set the counter to enable input.
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void update_debounce_counters(uint8_t num_rows, uint8_t current_time) |
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{ |
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debounce_counter_t *debounce_pointer = debounce_counters; |
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for (uint8_t row = 0; row < num_rows; row++) |
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{
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if (*debounce_pointer != DEBOUNCE_ELAPSED) |
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{ |
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if (TIMER_DIFF(current_time, *debounce_pointer, MAX_DEBOUNCE) >= DEBOUNCE) { |
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*debounce_pointer = DEBOUNCE_ELAPSED; |
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} |
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} |
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debounce_pointer++; |
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} |
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} |
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// upload from raw_matrix to final matrix;
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void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, uint8_t current_time) |
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{ |
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debounce_counter_t *debounce_pointer = debounce_counters; |
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for (uint8_t row = 0; row < num_rows; row++) |
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{ |
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matrix_row_t existing_row = cooked[row];
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matrix_row_t raw_row = raw[row]; |
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//determine new value basd on debounce pointer + raw value
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if (*debounce_pointer == DEBOUNCE_ELAPSED && |
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(existing_row != raw_row)) |
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{ |
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*debounce_pointer = current_time; |
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existing_row = raw_row;
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} |
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cooked[row] = existing_row; |
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debounce_pointer++; |
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}
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} |
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bool debounce_active(void) |
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{ |
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return true; |
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} |
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