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- /*
- 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 "debounce.h"
- #include "quantum.h"
-
- // Encoder things
- #define SWITCH_1 F7
- #define SWITCH_2 D7
- static bool read_encoder_values(matrix_row_t current_matrix[], uint8_t current_row);
-
- #ifdef MATRIX_MASKED
- extern const matrix_row_t matrix_mask[];
- #endif
-
- #ifdef DIRECT_PINS
- static pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
- #elif (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
- static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
- static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
- #endif
-
- /* matrix state(1:on, 0:off) */
- static matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
- static matrix_row_t matrix[MATRIX_ROWS]; // debounced values
-
- // helper functions
-
- inline bool matrix_is_on(uint8_t row, uint8_t col) { return (matrix[row] & ((matrix_row_t)1 << col)); }
-
- inline matrix_row_t matrix_get_row(uint8_t row) {
- // Matrix mask lets you disable switches in the returned matrix data. For example, if you have a
- // switch blocker installed and the switch is always pressed.
- #ifdef MATRIX_MASKED
- return matrix[row] & matrix_mask[row];
- #else
- return matrix[row];
- #endif
- }
-
- // matrix code
-
- #ifdef DIRECT_PINS
-
- static void init_pins(void) {
- for (int row = 0; row < MATRIX_ROWS; row++) {
- for (int col = 0; col < MATRIX_COLS; col++) {
- pin_t pin = direct_pins[row][col];
- if (pin != NO_PIN) {
- setPinInputHigh(pin);
- }
- }
- }
- }
-
- static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
- matrix_row_t last_row_value = current_matrix[current_row];
- current_matrix[current_row] = 0;
-
- for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
- pin_t pin = direct_pins[current_row][col_index];
- if (pin != NO_PIN) {
- current_matrix[current_row] |= readPin(pin) ? 0 : (MATRIX_ROW_SHIFTER << col_index);
- }
- }
-
- return (last_row_value != current_matrix[current_row]);
- }
-
- #elif (DIODE_DIRECTION == COL2ROW)
-
- 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]);
- }
-
- #elif (DIODE_DIRECTION == ROW2COL)
-
- static void select_col(uint8_t col) {
- setPinOutput(col_pins[col]);
- writePinLow(col_pins[col]);
- }
-
- static void unselect_col(uint8_t col) { setPinInputHigh(col_pins[col]); }
-
- static void unselect_cols(void) {
- for (uint8_t x = 0; x < MATRIX_COLS; x++) {
- setPinInputHigh(col_pins[x]);
- }
- }
-
- static void init_pins(void) {
- unselect_cols();
- for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
- setPinInputHigh(row_pins[x]);
- }
- }
-
- 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);
-
- // For each row...
- for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
- // Store last value of row prior to reading
- matrix_row_t last_row_value = current_matrix[row_index];
-
- // Check row pin state
- if (readPin(row_pins[row_index]) == 0) {
- // Pin LO, set col bit
- current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
- } else {
- // Pin HI, clear col bit
- current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
- }
-
- // Determine if the matrix changed state
- if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) {
- matrix_changed = true;
- }
- }
-
- // Unselect col
- unselect_col(current_col);
-
- return matrix_changed;
- }
-
- #endif
-
- void matrix_init(void) {
- // initialize key pins
- init_pins();
-
- // initialize matrix state: all keys off
- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
- raw_matrix[i] = 0;
- matrix[i] = 0;
- }
-
- debounce_init(MATRIX_ROWS);
-
- matrix_init_quantum();
- }
-
- uint8_t matrix_scan(void) {
- bool changed = false;
-
- #if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
- // 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);
- }
- #elif (DIODE_DIRECTION == ROW2COL)
- // Set col, read rows
- for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
- changed |= read_rows_on_col(raw_matrix, current_col);
- }
- #endif
-
- debounce(raw_matrix, matrix, MATRIX_ROWS, changed);
-
- // Read encoder switches, already debounced
- changed |= read_encoder_values(matrix, 4);
-
- matrix_scan_quantum();
- return (uint8_t)changed;
- }
-
- // Customisations for the encoders
- void matrix_init_kb(void){
- setPinInput(SWITCH_1);
- setPinInput(SWITCH_2);
- }
-
- void matrix_scan_kb(void){
-
- }
-
- void matrix_print(void){
-
- }
-
- static bool read_encoder_values(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;
- static uint8_t btn_2_array;
- bool btn_1_rising = 0;
- bool btn_2_rising = 0;
- btn_1_array <<= 1;
- btn_2_array <<= 1;
- btn_1_array |= readPin(SWITCH_1);
- btn_2_array |= readPin(SWITCH_2);
- (btn_1_array == 0b01111111) ? (btn_1_rising = 1) : (btn_1_rising = 0);
- (btn_2_array == 0b01111111) ? (btn_2_rising = 1) : (btn_2_rising = 0);
-
- // Populate the matrix row with the state of the encoder
- current_matrix[current_row] |= btn_1_rising ? (1 << 0) : 0;
- current_matrix[current_row] |= btn_2_rising ? (1 << 1) : 0;
-
- return (last_row_value != current_matrix[current_row]);
- }
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