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tmk_keyboard_custom/keyboard/kimera/matrix.c
2015-09-23 22:48:02 +09:00

142 Zeilen
3.0 KiB
C

/*
Copyright 2014 Kai Ryu <kai1103@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/>.
*/
/*
* scan matrix
*/
#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include <util/delay.h>
#include "print.h"
#include "debug.h"
#include "util.h"
#include "matrix.h"
#include "kimera.h"
#include "keymap_in_eeprom.h"
#ifndef DEBOUNCE
# define DEBOUNCE 5
#endif
static uint8_t debouncing = DEBOUNCE;
/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t matrix_debouncing[MATRIX_ROWS];
inline
uint8_t matrix_rows(void)
{
return kimera_matrix_rows();
}
inline
uint8_t matrix_cols(void)
{
return kimera_matrix_cols();
}
void matrix_init(void)
{
// disable JTAG
MCUCR = (1<<JTD);
MCUCR = (1<<JTD);
kimera_init();
// initialize row and col
kimera_unselect_rows();
// initialize matrix state: all keys off
for (uint8_t i=0; i < matrix_rows(); i++) {
matrix[i] = 0;
matrix_debouncing[i] = 0;
}
PORTD &= ~(1<<PD4);
}
uint8_t matrix_scan(void)
{
kimera_scan();
for (uint8_t i = 0; i < matrix_rows(); i++) {
kimera_select_row(i);
_delay_us(30); // without this wait read unstable value.
matrix_row_t cols = kimera_read_cols(i);
if (matrix_debouncing[i] != cols) {
matrix_debouncing[i] = cols;
if (debouncing) {
debug("bounce!: "); debug_hex(debouncing); debug("\n");
}
debouncing = DEBOUNCE;
}
kimera_unselect_rows();
}
if (debouncing) {
if (--debouncing) {
_delay_ms(1);
} else {
for (uint8_t i = 0; i < matrix_rows(); i++) {
matrix[i] = matrix_debouncing[i];
}
}
}
return 1;
}
bool matrix_is_modified(void)
{
if (debouncing) return false;
return true;
}
inline
bool matrix_is_on(uint8_t row, uint8_t col)
{
return (matrix[row] & ((matrix_row_t)1<<col));
}
inline
matrix_row_t matrix_get_row(uint8_t row)
{
return matrix[row];
}
void matrix_print(void)
{
print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n");
for (uint8_t row = 0; row < matrix_rows(); row++) {
phex(row); print(": ");
print_bin_reverse32(matrix_get_row(row));
print("\n");
}
}
uint8_t matrix_key_count(void)
{
uint8_t count = 0;
for (uint8_t i = 0; i < matrix_rows(); i++) {
count += bitpop32(matrix[i]);
}
return count;
}