59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
|
/*
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|