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