mirror of
https://github.com/qmk/qmk_firmware.git
synced 2026-10-02 14:58:59 +02:00
83 lines
2.8 KiB
C
83 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 2018 Charlie Waters
|
|
*
|
|
* 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 <stdint.h>
|
|
#include <stdbool.h>
|
|
#include <string.h>
|
|
#include <hal.h>
|
|
#include "timer.h"
|
|
#include "wait.h"
|
|
#include "print.h"
|
|
#include "matrix.h"
|
|
#include "annepro2.h"
|
|
|
|
static matrix_row_t matrix[MATRIX_ROWS];
|
|
static matrix_row_t matrix_debouncing[MATRIX_ROWS];
|
|
static uint32_t debounce_times[MATRIX_ROWS];
|
|
|
|
extern ioline_t row_list[MATRIX_ROWS];
|
|
extern ioline_t col_list[MATRIX_COLS];
|
|
|
|
void matrix_init_custom(void) {
|
|
memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t));
|
|
memset(matrix_debouncing, 0, MATRIX_ROWS * sizeof(matrix_row_t));
|
|
memset(debounce_times, 0, MATRIX_ROWS * sizeof(uint32_t));
|
|
}
|
|
|
|
uint8_t matrix_scan_custom(void) {
|
|
bool matrix_has_changed = false;
|
|
// cache of input ports for columns
|
|
static uint16_t port_cache[4];
|
|
// scan each row
|
|
for (int row = 0; row < MATRIX_ROWS; row++) {
|
|
palClearLine(row_list[row]);
|
|
__NOP();
|
|
__NOP();
|
|
__NOP();
|
|
__NOP();
|
|
// read i/o ports
|
|
port_cache[0] = palReadPort(IOPORTA);
|
|
port_cache[1] = palReadPort(IOPORTB);
|
|
port_cache[2] = palReadPort(IOPORTC);
|
|
port_cache[3] = palReadPort(IOPORTD);
|
|
palSetLine(row_list[row]);
|
|
|
|
// get columns from ports
|
|
matrix_row_t data = 0;
|
|
for (int col = 0; col < MATRIX_COLS; ++col) {
|
|
ioline_t line = col_list[col];
|
|
uint16_t port = port_cache[HT32_PAL_IDX(PAL_PORT(line))];
|
|
data |= (((port & (1 << PAL_PAD(line))) ? 0 : 1) << col);
|
|
}
|
|
|
|
// if a key event happens <5ms before the system time rolls over,
|
|
// the event will "never" debounce
|
|
// but any event on the same row will reset the debounce timer
|
|
if (matrix_debouncing[row] != data) {
|
|
// whenever row changes restart debouncing
|
|
matrix_debouncing[row] = data;
|
|
debounce_times[row] = timer_read32();
|
|
} else if (debounce_times[row] && timer_elapsed32(debounce_times[row]) >= DEBOUNCE) {
|
|
// when debouncing complete, update matrix
|
|
matrix[row] = matrix_debouncing[row];
|
|
debounce_times[row] = 0;
|
|
matrix_has_changed = true;
|
|
}
|
|
}
|
|
return matrix_has_changed;
|
|
}
|