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/* Copyright 2023 ArthurCyy <https://github.com/ArthurCyy>
*
* 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 "quantum.h"
#include "matrix.h"
#include "common/shift_register.h"
static uint8_t read_rows(void);
static void init_cols(void);
static void select_col(uint8_t col);
static void unselect_col(uint8_t col);
static void unselect_cols(void);
static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
#ifdef DIP_SWITCH_PINS
# define NUMBER_OF_DIP_SWITCHES (sizeof(dip_switch_pad) / sizeof(pin_t))
static pin_t dip_switch_pad[] = DIP_SWITCH_PINS;
#endif
void matrix_init_custom(void) {
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
setPinInputLow(row_pins[row]);
}
shift_init();
init_cols();
}
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
bool changed = false;
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
select_col(col);
waitInputPinDelay();
uint8_t rows = read_rows();
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
bool prev_bit = ((uint32_t)(current_matrix[row]) & (matrix_row_t)(1UL << col)) ? 1 : 0;
bool curr_bit = ((uint32_t)rows & (uint32_t)(1UL << row)) ? 1 : 0;
if (prev_bit != curr_bit) {
current_matrix[row] = (uint32_t)(current_matrix[row]) ^ (uint32_t)(1UL << col);
changed = true;
}
}
unselect_col(col);
}
return changed;
}
void matrix_power_up(void) {
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
palDisableLineEvent(row_pins[row]);
setPinInputLow(row_pins[row]);
}
init_cols();
#ifdef DIP_SWITCH_PINS
for (uint8_t i = 1; i < NUMBER_OF_DIP_SWITCHES; i++) {
setPinInputHigh(dip_switch_pad[i]);
}
#endif
}
void matrix_power_down(void) {
unselect_cols();
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
setPinInputLow(row_pins[row]);
palEnableLineEvent(row_pins[row], PAL_EVENT_MODE_RISING_EDGE);
}
#ifdef DIP_SWITCH_PINS
for (uint8_t i = 1; i < NUMBER_OF_DIP_SWITCHES; i++) {
setPinInputLow(dip_switch_pad[i]);
}
#endif
}
static uint8_t read_rows(void) {
uint8_t row_value = 0;
for(uint8_t row = 0; row < MATRIX_ROWS; row++) {
row_value |= (readPin(row_pins[row]) << row);
}
return row_value;
}
static void init_cols(void) {
shift_writeAll(0);
for(uint8_t col = 0; col < MATRIX_COLS; col++) {
if(col_pins[col] < H0) {
setPinOutput(col_pins[col]);
writePinLow(col_pins[col]);
}
}
}
static void select_col(uint8_t col) {
if(col_pins[col] < H0){
writePinHigh(col_pins[col]);
waitInputPinDelay();
waitInputPinDelay();
waitInputPinDelay();
waitInputPinDelay();
waitInputPinDelay();
waitInputPinDelay();
}else{
shift_writePin(col_pins[col], 1);
}
}
static void unselect_col(uint8_t col) {
if(col_pins[col] < H0){
writePinLow(col_pins[col]);
}else{
shift_writePin(col_pins[col], 0);
}
}
static void unselect_cols(void) {
shift_writeAll(1);
for(uint8_t col = 0; col < MATRIX_COLS; col++) {
if(col_pins[col] < H0) {
setPinOutput(col_pins[col]);
writePinHigh(col_pins[col]);
}
}
}
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