/* Copyright 2012-2018 Jun Wako, Jack Humbert, Yiancar 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 "wait.h" #include "util.h" #include "matrix.h" #include "quantum.h" // Encoder things #define ENC_SW F7 static bool read_encoder_switches(matrix_row_t current_matrix[], uint8_t current_row); static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS; static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS; /* 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 void select_row(uint8_t row) { setPinOutput(row_pins[row]); writePinLow(row_pins[row]); } static void unselect_row(uint8_t row) { setPinInputHigh(row_pins[row]); } static void unselect_rows(void) { for (uint8_t x = 0; x < MATRIX_ROWS; x++) { setPinInputHigh(row_pins[x]); } } static void init_pins(void) { unselect_rows(); for (uint8_t x = 0; x < MATRIX_COLS; x++) { setPinInputHigh(col_pins[x]); } } static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) { // Store last value of row prior to reading matrix_row_t last_row_value = current_matrix[current_row]; // Clear data in matrix row current_matrix[current_row] = 0; // Select row and wait for row selecton to stabilize select_row(current_row); wait_us(30); // For each col... for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) { // Select the col pin to read (active low) uint8_t pin_state = readPin(col_pins[col_index]); // Populate the matrix row with the state of the col pin current_matrix[current_row] |= pin_state ? 0 : (MATRIX_ROW_SHIFTER << col_index); } // Unselect row unselect_row(current_row); return (last_row_value != current_matrix[current_row]); } void matrix_init_custom(void) { // initialize key pins setPinInput(ENC_SW); init_pins(); } bool matrix_scan_custom(void) { bool changed = false; // Set row, read cols for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) { changed |= read_cols_on_row(raw_matrix, current_row); } // Read encoder switches, already debounced changed |= read_encoder_switches(matrix, 2); return changed; } static bool read_encoder_switches(matrix_row_t current_matrix[], uint8_t current_row) { // Store last value of row prior to reading matrix_row_t last_row_value = current_matrix[current_row]; // Clear data in matrix row current_matrix[current_row] = 0; // Debounce the encoder buttons using a shift register static uint8_t btn_1_array; bool btn_1_pressed = 0; btn_1_array <<= 1; btn_1_array |= readPin(ENC_SW); (btn_1_array == 0b11111111) ? (btn_1_pressed = 1) : (btn_1_pressed = 0); // Populate the matrix row with the state of the encoder current_matrix[current_row] |= btn_1_pressed ? (1 << 0) : 0; return (last_row_value != current_matrix[current_row]); }