/* Copyright 2021 talsu <talsu84@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/>. */ #include "wait.h" #include "matrix.h" #include "quantum.h" static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS; static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS; /* Columns 0 - 3 * col / pin: * 0: C7 * 1: C6 * 2: B6 * 3: B5 */ static void unselect_cols(void) { for (uint8_t col = 0; col < MATRIX_COLS; col++) { setPinOutput(col_pins[col]); writePinLow(col_pins[col]); } } static void select_col(uint8_t col) { writePinHigh(col_pins[col]); } static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) { bool matrix_changed = false; // Select col and wait for col selecton to stabilize select_col(current_col); wait_us(30); // row:0 , col:0 FN key is DIRECT_PIN if (current_col == 0) { matrix_row_t last_row_value = current_matrix[0]; if (readPin(row_pins[0]) == 0) { // Pin LO, set col bit current_matrix[0] |= (1 << current_col); } else { // Pin HI, clear col bit current_matrix[0] &= ~(1 << current_col); } // Determine if the matrix changed state if ((last_row_value != current_matrix[0]) && !(matrix_changed)) { matrix_changed = true; } } // other row use MATRIX for (uint8_t row_index = 1; row_index < MATRIX_ROWS; row_index++) { matrix_row_t last_row_value = current_matrix[row_index]; if (readPin(row_pins[row_index]) == 0) { // Pin HI, clear col bit current_matrix[row_index] &= ~(1 << current_col); } else { // Pin LO, set col bit current_matrix[row_index] |= (1 << current_col); } // Determine if the matrix changed state if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) { matrix_changed = true; } } // Unselect cols unselect_cols(); return matrix_changed; } void matrix_init_custom(void) { // initialize hardware and global matrix state here unselect_cols(); // initialize key pins for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) { setPinInputHigh(row_pins[row_index]); } } bool matrix_scan_custom(matrix_row_t current_matrix[]) { bool changed = false; for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) { changed |= read_rows_on_col(current_matrix, current_col); } return changed; }