- /*
- 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 <string.h>
- #include "util.h"
- #include "matrix.h"
- #include "debounce.h"
- #include "quantum.h"
- #ifdef SPLIT_KEYBOARD
- # include "split_common/split_util.h"
- # include "split_common/transactions.h"
-
- # define ROWS_PER_HAND (MATRIX_ROWS / 2)
- #else
- # define ROWS_PER_HAND (MATRIX_ROWS)
- #endif
-
- #ifdef DIRECT_PINS_RIGHT
- # define SPLIT_MUTABLE
- #else
- # define SPLIT_MUTABLE const
- #endif
- #ifdef MATRIX_ROW_PINS_RIGHT
- # define SPLIT_MUTABLE_ROW
- #else
- # define SPLIT_MUTABLE_ROW const
- #endif
- #ifdef MATRIX_COL_PINS_RIGHT
- # define SPLIT_MUTABLE_COL
- #else
- # define SPLIT_MUTABLE_COL const
- #endif
-
- #ifdef DIRECT_PINS
- static SPLIT_MUTABLE pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
- #elif (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
- # ifdef MATRIX_ROW_PINS
- static SPLIT_MUTABLE_ROW pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
- # endif // MATRIX_ROW_PINS
- # ifdef MATRIX_COL_PINS
- static SPLIT_MUTABLE_COL pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
- # endif // MATRIX_COL_PINS
- #endif
-
- /* 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
-
- #ifdef SPLIT_KEYBOARD
- // row offsets for each hand
- uint8_t thisHand, thatHand;
- #endif
-
- // user-defined overridable functions
- __attribute__((weak)) void matrix_init_pins(void);
- __attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
- __attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
- #ifdef SPLIT_KEYBOARD
- __attribute__((weak)) void matrix_slave_scan_kb(void) { matrix_slave_scan_user(); }
- __attribute__((weak)) void matrix_slave_scan_user(void) {}
- #endif
-
- static inline void setPinOutput_writeLow(pin_t pin) {
- ATOMIC_BLOCK_FORCEON {
- setPinOutput(pin);
- writePinLow(pin);
- }
- }
-
- static inline void setPinInputHigh_atomic(pin_t pin) {
- ATOMIC_BLOCK_FORCEON { setPinInputHigh(pin); }
- }
-
- static inline uint8_t readMatrixPin(pin_t pin) {
- if (pin != NO_PIN) {
- return readPin(pin);
- } else {
- return 1;
- }
- }
-
- // matrix code
-
- #ifdef DIRECT_PINS
-
- __attribute__((weak)) void matrix_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);
- }
- }
- }
- }
-
- __attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
- // Start with a clear matrix row
- matrix_row_t current_row_value = 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_row_value |= readPin(pin) ? 0 : (MATRIX_ROW_SHIFTER << col_index);
- }
- }
-
- // Update the matrix
- current_matrix[current_row] = current_row_value;
- }
-
- #elif defined(DIODE_DIRECTION)
- # if defined(MATRIX_ROW_PINS) && defined(MATRIX_COL_PINS)
- # if (DIODE_DIRECTION == COL2ROW)
-
- static bool select_row(uint8_t row) {
- pin_t pin = row_pins[row];
- if (pin != NO_PIN) {
- setPinOutput_writeLow(pin);
- return true;
- }
- return false;
- }
-
- static void unselect_row(uint8_t row) {
- pin_t pin = row_pins[row];
- if (pin != NO_PIN) {
- setPinInputHigh_atomic(pin);
- }
- }
-
- static void unselect_rows(void) {
- for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
- unselect_row(x);
- }
- }
-
- __attribute__((weak)) void matrix_init_pins(void) {
- unselect_rows();
- for (uint8_t x = 0; x < MATRIX_COLS; x++) {
- if (col_pins[x] != NO_PIN) {
- setPinInputHigh_atomic(col_pins[x]);
- }
- }
- }
-
- __attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
- // Start with a clear matrix row
- matrix_row_t current_row_value = 0;
-
- if (!select_row(current_row)) { // Select row
- return; // skip NO_PIN row
- }
- matrix_output_select_delay();
-
- // For each col...
- for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
- uint8_t pin_state = readMatrixPin(col_pins[col_index]);
-
- // Populate the matrix row with the state of the col pin
- current_row_value |= pin_state ? 0 : (MATRIX_ROW_SHIFTER << col_index);
- }
-
- // Unselect row
- unselect_row(current_row);
- matrix_output_unselect_delay(current_row, current_row_value != 0); // wait for all Col signals to go HIGH
-
- // Update the matrix
- current_matrix[current_row] = current_row_value;
- }
-
- # elif (DIODE_DIRECTION == ROW2COL)
-
- static bool select_col(uint8_t col) {
- pin_t pin = col_pins[col];
- if (pin != NO_PIN) {
- setPinOutput_writeLow(pin);
- return true;
- }
- return false;
- }
-
- static void unselect_col(uint8_t col) {
- pin_t pin = col_pins[col];
- if (pin != NO_PIN) {
- setPinInputHigh_atomic(pin);
- }
- }
-
- static void unselect_cols(void) {
- for (uint8_t x = 0; x < MATRIX_COLS; x++) {
- unselect_col(x);
- }
- }
-
- __attribute__((weak)) void matrix_init_pins(void) {
- unselect_cols();
- for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
- if (row_pins[x] != NO_PIN) {
- setPinInputHigh_atomic(row_pins[x]);
- }
- }
- }
-
- __attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
- bool key_pressed = false;
-
- // Select col
- if (!select_col(current_col)) { // select col
- return; // skip NO_PIN col
- }
- matrix_output_select_delay();
-
- // For each row...
- for (uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++) {
- // Check row pin state
- if (readMatrixPin(row_pins[row_index]) == 0) {
- // Pin LO, set col bit
- current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
- key_pressed = true;
- } else {
- // Pin HI, clear col bit
- current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
- }
- }
-
- // Unselect col
- unselect_col(current_col);
- matrix_output_unselect_delay(current_col, key_pressed); // wait for all Row signals to go HIGH
- }
-
- # else
- # error DIODE_DIRECTION must be one of COL2ROW or ROW2COL!
- # endif
- # endif // defined(MATRIX_ROW_PINS) && defined(MATRIX_COL_PINS)
- #else
- # error DIODE_DIRECTION is not defined!
- #endif
-
- void matrix_init(void) {
- #ifdef SPLIT_KEYBOARD
- split_pre_init();
-
- // Set pinout for right half if pinout for that half is defined
- if (!isLeftHand) {
- # ifdef DIRECT_PINS_RIGHT
- const pin_t direct_pins_right[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS_RIGHT;
- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
- for (uint8_t j = 0; j < MATRIX_COLS; j++) {
- direct_pins[i][j] = direct_pins_right[i][j];
- }
- }
- # endif
- # ifdef MATRIX_ROW_PINS_RIGHT
- const pin_t row_pins_right[MATRIX_ROWS] = MATRIX_ROW_PINS_RIGHT;
- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
- row_pins[i] = row_pins_right[i];
- }
- # endif
- # ifdef MATRIX_COL_PINS_RIGHT
- const pin_t col_pins_right[MATRIX_COLS] = MATRIX_COL_PINS_RIGHT;
- for (uint8_t i = 0; i < MATRIX_COLS; i++) {
- col_pins[i] = col_pins_right[i];
- }
- # endif
- }
-
- thisHand = isLeftHand ? 0 : (ROWS_PER_HAND);
- thatHand = ROWS_PER_HAND - thisHand;
- #endif
-
- // initialize key pins
- matrix_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(ROWS_PER_HAND);
-
- matrix_init_quantum();
-
- #ifdef SPLIT_KEYBOARD
- split_post_init();
- #endif
- }
-
- #ifdef SPLIT_KEYBOARD
- // Fallback implementation for keyboards not using the standard split_util.c
- __attribute__((weak)) bool transport_master_if_connected(matrix_row_t master_matrix[], matrix_row_t slave_matrix[]) {
- transport_master(master_matrix, slave_matrix);
- return true; // Treat the transport as always connected
- }
-
- bool matrix_post_scan(void) {
- bool changed = false;
- if (is_keyboard_master()) {
- matrix_row_t slave_matrix[ROWS_PER_HAND] = {0};
- if (transport_master_if_connected(matrix + thisHand, slave_matrix)) {
- for (int i = 0; i < ROWS_PER_HAND; ++i) {
- if (matrix[thatHand + i] != slave_matrix[i]) {
- matrix[thatHand + i] = slave_matrix[i];
- changed = true;
- }
- }
- } else {
- // reset other half if disconnected
- for (int i = 0; i < ROWS_PER_HAND; ++i) {
- matrix[thatHand + i] = 0;
- slave_matrix[i] = 0;
- }
-
- changed = true;
- }
-
- matrix_scan_quantum();
- } else {
- transport_slave(matrix + thatHand, matrix + thisHand);
-
- matrix_slave_scan_kb();
- }
-
- return changed;
- }
- #endif
-
- uint8_t matrix_scan(void) {
- matrix_row_t curr_matrix[MATRIX_ROWS] = {0};
-
- #if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
- // Set row, read cols
- for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
- matrix_read_cols_on_row(curr_matrix, current_row);
- }
- #elif (DIODE_DIRECTION == ROW2COL)
- // Set col, read rows
- for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
- matrix_read_rows_on_col(curr_matrix, current_col);
- }
- #endif
-
- bool changed = memcmp(raw_matrix, curr_matrix, sizeof(curr_matrix)) != 0;
- if (changed) memcpy(raw_matrix, curr_matrix, sizeof(curr_matrix));
-
- #ifdef SPLIT_KEYBOARD
- debounce(raw_matrix, matrix + thisHand, ROWS_PER_HAND, changed);
- changed = (changed || matrix_post_scan());
- #else
- debounce(raw_matrix, matrix, ROWS_PER_HAND, changed);
- matrix_scan_quantum();
- #endif
- return (uint8_t)changed;
- }
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