You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
139 lines
3.8 KiB
139 lines
3.8 KiB
/* Copyright 2021 @ Keychron (https://www.keychron.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/>.
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include <string.h>
|
|
#include "util.h"
|
|
#include "matrix.h"
|
|
#include "debounce.h"
|
|
#include "quantum.h"
|
|
|
|
#ifdef MATRIX_ROW_PINS
|
|
static pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
|
|
#endif // MATRIX_ROW_PINS
|
|
#ifdef MATRIX_COL_PINS
|
|
static pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
|
|
#endif // MATRIX_COL_PINS
|
|
|
|
#define ROWS_PER_HAND (MATRIX_ROWS)
|
|
|
|
/* matrix state(1:on, 0:off) */
|
|
extern matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
|
|
extern matrix_row_t matrix[MATRIX_ROWS]; // debounced values
|
|
|
|
static inline void setPinOutput_writeLow(pin_t pin) {
|
|
ATOMIC_BLOCK_FORCEON {
|
|
setPinOutput(pin);
|
|
writePinLow(pin);
|
|
}
|
|
}
|
|
|
|
static inline void setPinOutput_writeHigh(pin_t pin) {
|
|
ATOMIC_BLOCK_FORCEON {
|
|
setPinOutput(pin);
|
|
writePinHigh(pin);
|
|
}
|
|
}
|
|
|
|
static inline void setPinInputHigh_atomic(pin_t pin) {
|
|
ATOMIC_BLOCK_FORCEON { setPinInputHigh(pin); }
|
|
}
|
|
|
|
static inline uint8_t readMatrixPin(pin_t pin) {
|
|
if (pin != NO_PIN) {
|
|
return readPin(pin);
|
|
} else {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static bool select_col(uint8_t col) {
|
|
pin_t pin = col_pins[col];
|
|
if (pin != NO_PIN) {
|
|
setPinOutput_writeLow(pin);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void unselect_col(uint8_t col) {
|
|
pin_t pin = col_pins[col];
|
|
if (pin != NO_PIN) {
|
|
setPinOutput_writeHigh(pin);
|
|
}
|
|
}
|
|
|
|
static void unselect_cols(void) {
|
|
for (uint8_t x = 0; x < MATRIX_COLS; x++) {
|
|
unselect_col(x);
|
|
}
|
|
}
|
|
|
|
void matrix_init_pins(void) {
|
|
unselect_cols();
|
|
for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
|
|
if (row_pins[x] != NO_PIN) {
|
|
setPinInputHigh_atomic(row_pins[x]);
|
|
}
|
|
}
|
|
}
|
|
|
|
void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
|
|
bool key_pressed = false;
|
|
|
|
// Select col
|
|
if (!select_col(current_col)) { // select col
|
|
return; // skip NO_PIN col
|
|
}
|
|
matrix_output_select_delay();
|
|
|
|
// For each row...
|
|
for (uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++) {
|
|
// Check row pin state
|
|
if (readMatrixPin(row_pins[row_index]) == 0) {
|
|
// Pin LO, set col bit
|
|
current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
|
|
key_pressed = true;
|
|
} else {
|
|
// Pin HI, clear col bit
|
|
current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
|
|
}
|
|
}
|
|
|
|
// Unselect col
|
|
unselect_col(current_col);
|
|
matrix_output_unselect_delay(current_col, key_pressed); // wait for all Row signals to go HIGH
|
|
}
|
|
|
|
void matrix_init_custom(void) {
|
|
// initialize key pins
|
|
matrix_init_pins();
|
|
}
|
|
|
|
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
|
|
matrix_row_t curr_matrix[MATRIX_ROWS] = {0};
|
|
|
|
// Set col, read rows
|
|
for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
|
|
matrix_read_rows_on_col(curr_matrix, current_col);
|
|
}
|
|
|
|
bool changed = memcmp(current_matrix, curr_matrix, sizeof(curr_matrix)) != 0;
|
|
if (changed) memcpy(current_matrix, curr_matrix, sizeof(curr_matrix));
|
|
|
|
return (uint8_t)changed;
|
|
}
|