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