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-/*
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-Copyright 2012 Jun Wako <wakojun@gmail.com>
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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 <stdint.h>
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-#include <stdbool.h>
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-#include <string.h>
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-#include "util.h"
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-#include "matrix.h"
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-#include "debounce.h"
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-#include "quantum.h"
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-#include "split_util.h"
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-#include "config.h"
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-#include "transactions.h"
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-
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-#ifndef ERROR_DISCONNECT_COUNT
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-# define ERROR_DISCONNECT_COUNT 5
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-#endif // ERROR_DISCONNECT_COUNT
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-
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-#define ROWS_PER_HAND (MATRIX_ROWS / 2)
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-
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-#ifdef DIRECT_PINS
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-static pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
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-#elif (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
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-# ifdef MATRIX_ROW_PINS
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-static pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
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-# endif // MATRIX_ROW_PINS
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-# ifdef MATRIX_COL_PINS
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-static pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
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-# endif // MATRIX_COL_PINS
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-#endif
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-
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-/* matrix state(1:on, 0:off) */
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-extern matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
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-extern matrix_row_t matrix[MATRIX_ROWS]; // debounced values
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-
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-// row offsets for each hand
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-uint8_t thisHand, thatHand;
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-
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-// user-defined overridable functions
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-__attribute__((weak)) void matrix_slave_scan_kb(void) { matrix_slave_scan_user(); }
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-__attribute__((weak)) void matrix_slave_scan_user(void) {}
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-__attribute__((weak)) void matrix_init_pins(void);
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-__attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
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-__attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
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-
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-static inline void setPinOutput_writeLow(pin_t pin) {
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- ATOMIC_BLOCK_FORCEON {
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- setPinOutput(pin);
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- writePinLow(pin);
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- }
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-}
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-
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-static inline void setPinInputHigh_atomic(pin_t pin) {
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- ATOMIC_BLOCK_FORCEON { setPinInputHigh(pin); }
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-}
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-
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-static inline uint8_t readMatrixPin(pin_t pin) {
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- if (pin != NO_PIN) {
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- return readPin(pin);
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- } else {
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- return 1;
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- }
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-}
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-
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-// matrix code
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-
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-#ifdef DIRECT_PINS
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-
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-__attribute__((weak)) void matrix_init_pins(void) {
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- for (int row = 0; row < MATRIX_ROWS; row++) {
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- for (int col = 0; col < MATRIX_COLS; col++) {
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- pin_t pin = direct_pins[row][col];
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- if (pin != NO_PIN) {
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- setPinInputHigh(pin);
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- }
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- }
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- }
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-}
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-
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-__attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
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- // Start with a clear matrix row
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- matrix_row_t current_row_value = 0;
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-
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- for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
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- pin_t pin = direct_pins[current_row][col_index];
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- if (pin != NO_PIN) {
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- current_row_value |= readPin(pin) ? 0 : (MATRIX_ROW_SHIFTER << col_index);
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- }
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- }
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-
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- // Update the matrix
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- current_matrix[current_row] = current_row_value;
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-}
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-
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-#elif defined(DIODE_DIRECTION)
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-# if defined(MATRIX_ROW_PINS) && defined(MATRIX_COL_PINS)
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-# if (DIODE_DIRECTION == COL2ROW)
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-
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-static bool select_row(uint8_t row) {
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- pin_t pin = row_pins[row];
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- if (pin != NO_PIN) {
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- setPinOutput_writeLow(pin);
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- return true;
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- }
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- return false;
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-}
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-
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-static void unselect_row(uint8_t row) {
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- pin_t pin = row_pins[row];
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- if (pin != NO_PIN) {
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- setPinInputHigh_atomic(pin);
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- }
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-}
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-
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-static void unselect_rows(void) {
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- for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
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- unselect_row(x);
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- }
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-}
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-
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-__attribute__((weak)) void matrix_init_pins(void) {
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- unselect_rows();
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- for (uint8_t x = 0; x < MATRIX_COLS; x++) {
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- if (col_pins[x] != NO_PIN) {
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- setPinInputHigh_atomic(col_pins[x]);
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- }
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- }
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-}
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-
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-__attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
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- // Start with a clear matrix row
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- matrix_row_t current_row_value = 0;
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-
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- if (!select_row(current_row)) { // Select row
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- return; // skip NO_PIN row
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- }
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- matrix_output_select_delay();
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-
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- // For each col...
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- for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
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- uint8_t pin_state = readMatrixPin(col_pins[col_index]);
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-
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- // Populate the matrix row with the state of the col pin
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- current_row_value |= pin_state ? 0 : (MATRIX_ROW_SHIFTER << col_index);
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- }
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-
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- // Unselect row
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- unselect_row(current_row);
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- matrix_output_unselect_delay(); // wait for all Col signals to go HIGH
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-
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- // Update the matrix
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- current_matrix[current_row] = current_row_value;
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-}
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-
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-# elif (DIODE_DIRECTION == ROW2COL)
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-
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-static bool select_col(uint8_t col) {
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- pin_t pin = col_pins[col];
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- if (pin != NO_PIN) {
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- setPinOutput_writeLow(pin);
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- return true;
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- }
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- return false;
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-}
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-
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-static void unselect_col(uint8_t col) {
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- pin_t pin = col_pins[col];
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- if (pin != NO_PIN) {
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- setPinInputHigh_atomic(pin);
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- }
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-}
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-
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-static void unselect_cols(void) {
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- for (uint8_t x = 0; x < MATRIX_COLS; x++) {
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- unselect_col(x);
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- }
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-}
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-
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-__attribute__((weak)) void matrix_init_pins(void) {
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- unselect_cols();
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- for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
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- if (row_pins[x] != NO_PIN) {
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- setPinInputHigh_atomic(row_pins[x]);
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- }
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- }
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-}
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-
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-__attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
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- // Select col
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- if (!select_col(current_col)) { // select col
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- return; // skip NO_PIN col
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- }
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- matrix_output_select_delay();
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-
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- // For each row...
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- for (uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++) {
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- // Check row pin state
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- if (readMatrixPin(row_pins[row_index]) == 0) {
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- // Pin LO, set col bit
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- current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
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- } else {
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- // Pin HI, clear col bit
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- current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
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- }
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- }
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-
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- // Unselect col
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- unselect_col(current_col);
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- matrix_output_unselect_delay(); // wait for all Row signals to go HIGH
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-}
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-
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-# else
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-# error DIODE_DIRECTION must be one of COL2ROW or ROW2COL!
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-# endif
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-# endif // defined(MATRIX_ROW_PINS) && defined(MATRIX_COL_PINS)
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-#else
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-# error DIODE_DIRECTION is not defined!
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-#endif
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-
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-void matrix_init(void) {
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- split_pre_init();
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-
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- // Set pinout for right half if pinout for that half is defined
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- if (!isLeftHand) {
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-#ifdef DIRECT_PINS_RIGHT
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- const pin_t direct_pins_right[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS_RIGHT;
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- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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- for (uint8_t j = 0; j < MATRIX_COLS; j++) {
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- direct_pins[i][j] = direct_pins_right[i][j];
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- }
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- }
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-#endif
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-#ifdef MATRIX_ROW_PINS_RIGHT
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- const pin_t row_pins_right[MATRIX_ROWS] = MATRIX_ROW_PINS_RIGHT;
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- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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- row_pins[i] = row_pins_right[i];
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- }
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-#endif
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-#ifdef MATRIX_COL_PINS_RIGHT
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- const pin_t col_pins_right[MATRIX_COLS] = MATRIX_COL_PINS_RIGHT;
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- for (uint8_t i = 0; i < MATRIX_COLS; i++) {
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- col_pins[i] = col_pins_right[i];
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- }
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-#endif
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- }
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-
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- thisHand = isLeftHand ? 0 : (ROWS_PER_HAND);
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- thatHand = ROWS_PER_HAND - thisHand;
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-
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- // initialize key pins
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- matrix_init_pins();
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-
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- // initialize matrix state: all keys off
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- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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- raw_matrix[i] = 0;
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- matrix[i] = 0;
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- }
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-
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- debounce_init(ROWS_PER_HAND);
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-
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- matrix_init_quantum();
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-
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- split_post_init();
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-}
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-
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-bool matrix_post_scan(void) {
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- bool changed = false;
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- if (is_keyboard_master()) {
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- static uint8_t error_count;
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-
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- matrix_row_t slave_matrix[ROWS_PER_HAND] = {0};
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- if (!transport_master(matrix + thisHand, slave_matrix)) {
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- error_count++;
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-
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- if (error_count > ERROR_DISCONNECT_COUNT) {
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- // reset other half if disconnected
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- for (int i = 0; i < ROWS_PER_HAND; ++i) {
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- matrix[thatHand + i] = 0;
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- slave_matrix[i] = 0;
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- }
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-
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- changed = true;
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- }
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- } else {
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- error_count = 0;
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-
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- for (int i = 0; i < ROWS_PER_HAND; ++i) {
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- if (matrix[thatHand + i] != slave_matrix[i]) {
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- matrix[thatHand + i] = slave_matrix[i];
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- changed = true;
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- }
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- }
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- }
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-
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- matrix_scan_quantum();
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- } else {
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- transport_slave(matrix + thatHand, matrix + thisHand);
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-
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- matrix_slave_scan_kb();
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- }
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-
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- return changed;
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-}
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-
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-uint8_t matrix_scan(void) {
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- matrix_row_t curr_matrix[MATRIX_ROWS] = {0};
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-
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-#if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
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- // Set row, read cols
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- for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
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- matrix_read_cols_on_row(curr_matrix, current_row);
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- }
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-#elif (DIODE_DIRECTION == ROW2COL)
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- // Set col, read rows
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- for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
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- matrix_read_rows_on_col(curr_matrix, current_col);
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- }
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-#endif
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-
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- bool local_changed = memcmp(raw_matrix, curr_matrix, sizeof(curr_matrix)) != 0;
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- if (local_changed) memcpy(raw_matrix, curr_matrix, sizeof(curr_matrix));
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-
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- debounce(raw_matrix, matrix + thisHand, ROWS_PER_HAND, local_changed);
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-
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- bool remote_changed = matrix_post_scan();
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- return (uint8_t)(local_changed || remote_changed);
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-}
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Drashna Jaelre