From 17e7762de7e3fdfc61c20aa61022f47370630c6a Mon Sep 17 00:00:00 2001 From: Alex Ong Date: Thu, 4 Apr 2019 08:45:55 +1100 Subject: 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. --- quantum/debounce/eager_pr.c | 100 ++++++++++++++++++++++++++++++++++++++++++++ quantum/debounce/readme.md | 2 +- 2 files changed, 101 insertions(+), 1 deletion(-) create mode 100644 quantum/debounce/eager_pr.c (limited to 'quantum') diff --git a/quantum/debounce/eager_pr.c b/quantum/debounce/eager_pr.c new file mode 100644 index 000000000..9eb9480a7 --- /dev/null +++ b/quantum/debounce/eager_pr.c @@ -0,0 +1,100 @@ +/* +Copyright 2019 Alex Ong +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 . +*/ + +/* +Basic per-row algorithm. Uses an 8-bit counter per row. +After pressing a key, it immediately changes state, and sets a counter. +No further inputs are accepted until DEBOUNCE milliseconds have occurred. +*/ + +#include "matrix.h" +#include "timer.h" +#include "quantum.h" +#include + +#ifndef DEBOUNCE + #define DEBOUNCE 5 +#endif + + +#define debounce_counter_t uint8_t + +static debounce_counter_t *debounce_counters; + +#define DEBOUNCE_ELAPSED 251 +#define MAX_DEBOUNCE (DEBOUNCE_ELAPSED - 1) + +void update_debounce_counters(uint8_t num_rows, uint8_t current_time); +void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, uint8_t current_time); + +//we use num_rows rather than MATRIX_ROWS to support split keyboards +void debounce_init(uint8_t num_rows) +{ + debounce_counters = (debounce_counter_t*)malloc(num_rows*sizeof(debounce_counter_t)); + for (uint8_t r = 0; r < num_rows; r++) + { + debounce_counters[r] = DEBOUNCE_ELAPSED; + } +} + +void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed) +{ + uint8_t current_time = timer_read() % MAX_DEBOUNCE; + update_debounce_counters(num_rows, current_time); + transfer_matrix_values(raw, cooked, num_rows, current_time); +} + +//If the current time is > debounce counter, set the counter to enable input. +void update_debounce_counters(uint8_t num_rows, uint8_t current_time) +{ + debounce_counter_t *debounce_pointer = debounce_counters; + for (uint8_t row = 0; row < num_rows; row++) + { + if (*debounce_pointer != DEBOUNCE_ELAPSED) + { + if (TIMER_DIFF(current_time, *debounce_pointer, MAX_DEBOUNCE) >= DEBOUNCE) { + *debounce_pointer = DEBOUNCE_ELAPSED; + } + } + debounce_pointer++; + } +} + +// upload from raw_matrix to final matrix; +void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, uint8_t current_time) +{ + debounce_counter_t *debounce_pointer = debounce_counters; + for (uint8_t row = 0; row < num_rows; row++) + { + matrix_row_t existing_row = cooked[row]; + matrix_row_t raw_row = raw[row]; + + //determine new value basd on debounce pointer + raw value + if (*debounce_pointer == DEBOUNCE_ELAPSED && + (existing_row != raw_row)) + { + *debounce_pointer = current_time; + existing_row = raw_row; + } + cooked[row] = existing_row; + + debounce_pointer++; + } +} + +bool debounce_active(void) +{ + return true; +} + diff --git a/quantum/debounce/readme.md b/quantum/debounce/readme.md index 5b318d845..f77f78c76 100644 --- a/quantum/debounce/readme.md +++ b/quantum/debounce/readme.md @@ -22,7 +22,7 @@ Here are a few that could be implemented: sym_g.c sym_pk.c sym_pr.c -sym_pr_cycles.c //currently used in ergo-dox +sym_pr_cycles.c eager_g.c eager_pk.c eager_pr.c //could be used in ergo-dox! -- cgit v1.2.3-24-g4f1b