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-rw-r--r--keyboards/kagizaraya/chidori/board.c364
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diff --git a/keyboards/kagizaraya/chidori/board.c b/keyboards/kagizaraya/chidori/board.c
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+/* Copyright 2019 ENDO Katsuhiro <ka2hiro@kagizaraya.jp>
+ *
+ * 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 "print.h"
+#include "debug.h"
+#include "matrix.h"
+#include "quantum.h"
+#include "board.h"
+#include "i2c_master.h"
+
+static board_info_t boards[NUM_BOARDS] = BOARD_INFOS;
+static board_info_t* master_board = NULL;
+
+static bool board_is_master(board_info_t* board);
+static bool board_is_initialized(board_info_t* board);
+static board_info_t* get_board_by_index(uint8_t board_index);
+static uint8_t board_merge_led_config(board_info_t* board, uint8_t iodir);
+static uint8_t board_merge_led_status(board_info_t* board, uint8_t data);
+static void board_master_init(void);
+static void board_slave_init(void);
+
+//
+// board interface
+//
+static void board_select_master_row(board_info_t* board, uint8_t row);
+static void board_unselect_master_row(board_info_t* board, uint8_t row);
+static void board_unselect_master_rows(board_info_t* board);
+static bool board_read_cols_on_master_row(board_info_t* board, matrix_row_t current_matrix[], uint8_t row);
+static void board_set_master_led(board_info_t* board, uint8_t led_index, bool status);
+static void board_select_slave_row(board_info_t* board, uint8_t row);
+static void board_unselect_slave_row(board_info_t* board, uint8_t row);
+static void board_unselect_slave_rows(board_info_t* board);
+static bool board_read_cols_on_slave_row(board_info_t* board, matrix_row_t current_matrix[], uint8_t row);
+static void board_set_slave_led(board_info_t* board, uint8_t led_index, bool status);
+
+static board_interface_t master_interface = {board_select_master_row, board_unselect_master_row, board_unselect_master_rows, board_read_cols_on_master_row, board_set_master_led};
+static board_interface_t slave_interface = {board_select_slave_row, board_unselect_slave_row, board_unselect_slave_rows, board_read_cols_on_slave_row, board_set_slave_led};
+
+static board_interface_t* get_interface(board_info_t* board) {
+ if (board_is_master(board)) {
+ return &master_interface;
+ }
+ return &slave_interface;
+}
+
+static void board_set_master_led(board_info_t* board, uint8_t led_index, bool status) {
+ pin_t pin = board->led_pins[led_index];
+ board->led_status[led_index] = status;
+ setPinOutput(pin);
+ status ? writePinHigh(pin) : writePinLow(pin);
+}
+
+static void board_set_slave_led(board_info_t* board, uint8_t led_index, bool status) {
+ board->led_status[led_index] = status;
+ uint8_t iodir = board_merge_led_config(board, 0xff);
+ uint8_t data = board_merge_led_status(board, 0x00);
+ i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_IODIRB, (const uint8_t*)&iodir, sizeof(iodir), BOARD_I2C_TIMEOUT);
+ i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_OLATB, (const uint8_t*)&data, sizeof(data), BOARD_I2C_TIMEOUT);
+}
+
+static uint8_t board_merge_led_config(board_info_t* board, uint8_t iodir) {
+ for (uint8_t i = 0; i < NUM_LEDS; i++) {
+ iodir &= PIN2MASK(board->led_pins[i]);
+ }
+ return iodir;
+}
+
+static bool board_slave_config(board_info_t* board) {
+ uint8_t set = 0xff;
+ uint8_t clear = 0x00;
+ i2c_status_t res = 0;
+
+ // Set to input
+ res = i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_IODIRA, (const uint8_t*)&set, sizeof(set), BOARD_I2C_TIMEOUT);
+ if (res < 0) return false;
+ // RESTRICTION: LEDs only on PORT B.
+ set = board_merge_led_config(board, set);
+ res = i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_IODIRB, (const uint8_t*)&set, sizeof(set), BOARD_I2C_TIMEOUT);
+ if (res < 0) return false;
+ set = 0xff;
+
+ // Pull up for input - enable
+ res = i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_GPPUA, (const uint8_t*)&set, sizeof(set), BOARD_I2C_TIMEOUT);
+ if (res < 0) return false;
+ res = i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_GPPUB, (const uint8_t*)&set, sizeof(set), BOARD_I2C_TIMEOUT);
+ if (res < 0) return false;
+
+ // Disable interrupt
+ res = i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_GPINTENA, (const uint8_t*)&clear, sizeof(clear), BOARD_I2C_TIMEOUT);
+ if (res < 0) return false;
+ res = i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_GPINTENB, (const uint8_t*)&clear, sizeof(clear), BOARD_I2C_TIMEOUT);
+ if (res < 0) return false;
+
+ // Polarity - same logic
+ res = i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_IPOLA, (const uint8_t*)&clear, sizeof(clear), BOARD_I2C_TIMEOUT);
+ if (res < 0) return false;
+ res = i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_IPOLB, (const uint8_t*)&clear, sizeof(clear), BOARD_I2C_TIMEOUT);
+ if (res < 0) return false;
+
+ return true;
+}
+
+static void board_slave_init(void) {
+ i2c_init();
+ _delay_ms(500);
+
+ for (uint8_t i = 0; i < NUM_BOARDS; i++) {
+ board_info_t* board = &boards[i];
+ if (board_is_master(board)) {
+ continue;
+ }
+ if (i2c_start(EXPANDER_ADDR(board->i2c_address), BOARD_I2C_TIMEOUT) != I2C_STATUS_SUCCESS) {
+ continue;
+ }
+ i2c_stop();
+ if (board_slave_config(board)) {
+ board->initialized = true;
+ }
+ }
+}
+
+inline bool board_is_master(board_info_t* board) {
+ if (board) {
+ return board->master;
+ }
+ return false;
+}
+
+inline uint8_t matrix2board(uint8_t row) { return row % NUM_ROWS; }
+
+inline uint8_t board_index(uint8_t row) { return row / NUM_ROWS; }
+
+static board_info_t* get_master_board(void) {
+ if (master_board == NULL) {
+ for (uint8_t i = 0; i < NUM_BOARDS; i++) {
+ if (boards[i].master) {
+ master_board = &boards[i];
+ return master_board;
+ }
+ }
+ }
+ return NULL;
+}
+
+inline bool board_is_initialized(board_info_t* board) { return board == NULL ? false : board->initialized; }
+
+static board_info_t* get_board_by_index(uint8_t board_index) {
+ if (board_index >= 0 && board_index < NUM_BOARDS) {
+ if (!board_is_initialized(&boards[board_index])) {
+ return NULL;
+ }
+ return &boards[board_index];
+ }
+ return NULL;
+}
+
+static board_info_t* get_board(uint8_t row) {
+ uint8_t idx = board_index(row);
+ if (idx >= 0 && idx < NUM_BOARDS) {
+ if (!board_is_initialized(&boards[idx])) {
+ return NULL;
+ }
+ return &boards[idx];
+ }
+ return NULL;
+}
+
+static uint8_t board_merge_led_status(board_info_t* board, uint8_t data) {
+ if (!board_is_initialized(board)) {
+ return data;
+ }
+ for (uint8_t i = 0; i < NUM_LEDS; i++) {
+ bool status = board->led_status[i];
+ if (status) {
+ data |= (uint8_t)1 << PIN2INDEX(board->led_pins[i]);
+ } else {
+ data &= PIN2MASK(board->led_pins[i]);
+ }
+ }
+ return data;
+}
+
+//
+// Functions for slave
+//
+static uint8_t board_read_slave_cols(board_info_t* board) {
+ if (!board_is_initialized(board)) {
+ return 0xff;
+ }
+ uint8_t data = 0xff;
+ i2c_status_t res = i2c_readReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_GPIOA, &data, sizeof(data), BOARD_I2C_TIMEOUT);
+ return (res < 0) ? 0xff : data;
+}
+
+static void board_select_slave_row(board_info_t* board, uint8_t board_row) {
+ if (!board_is_initialized(board)) {
+ return;
+ }
+ uint8_t pin = board->row_pins[board_row];
+ uint8_t iodir = board_merge_led_config(board, PIN2MASK(pin));
+ uint8_t status = board_merge_led_status(board, PIN2MASK(pin));
+ i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_IODIRB, (const uint8_t*)&iodir, sizeof(iodir), BOARD_I2C_TIMEOUT);
+ i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_OLATB, (const uint8_t*)&status, sizeof(status), BOARD_I2C_TIMEOUT);
+}
+
+static void board_unselect_slave_rows(board_info_t* board) {
+ if (!board_is_initialized(board)) {
+ return;
+ }
+ uint8_t iodir = board_merge_led_config(board, 0xff);
+ uint8_t data = board_merge_led_status(board, 0x00);
+ i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_IODIRB, (const uint8_t*)&iodir, sizeof(iodir), BOARD_I2C_TIMEOUT);
+ i2c_writeReg(EXPANDER_ADDR(board->i2c_address), EXPANDER_OLATB, (const uint8_t*)&data, sizeof(data), BOARD_I2C_TIMEOUT);
+}
+
+static void board_unselect_slave_row(board_info_t* board, uint8_t board_row) { board_unselect_slave_rows(board); }
+
+/*
+ * row : matrix row (not board row)
+ */
+static bool board_read_cols_on_slave_row(board_info_t* board, matrix_row_t current_matrix[], uint8_t row) {
+ matrix_row_t last_row_value = current_matrix[row];
+ current_matrix[row] = 0;
+
+ uint8_t board_row = matrix2board(row);
+ board_select_slave_row(board, board_row);
+ wait_us(30);
+
+ uint8_t cols = board_read_slave_cols(board);
+ for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
+ uint8_t pin = board->col_pins[col_index];
+ uint8_t pin_state = cols & PIN2BIT(pin);
+ current_matrix[row] |= pin_state ? 0 : (1 << col_index);
+ }
+ board_unselect_slave_row(board, board_row);
+
+ return (last_row_value != current_matrix[row]);
+}
+
+//
+// Functions for master board
+//
+static void board_select_master_row(board_info_t* board, uint8_t board_row) {
+ setPinOutput(board->row_pins[board_row]);
+ writePinLow(board->row_pins[board_row]);
+}
+
+static void board_unselect_master_row(board_info_t* board, uint8_t board_row) { setPinInputHigh(board->row_pins[board_row]); }
+
+static void board_unselect_master_rows(board_info_t* board) {
+ if (!board) {
+ return;
+ }
+ for (uint8_t x = 0; x < NUM_ROWS; x++) {
+ setPinInput(board->row_pins[x]);
+ }
+}
+
+/*
+ * row : matrix row (not board row)
+ */
+static bool board_read_cols_on_master_row(board_info_t* board, matrix_row_t current_matrix[], uint8_t row) {
+ matrix_row_t last_row_value = current_matrix[row];
+ current_matrix[row] = 0;
+
+ uint8_t board_row = matrix2board(row);
+ board_select_master_row(board, board_row);
+ wait_us(30);
+
+ for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
+ uint8_t pin_state = readPin(board->col_pins[col_index]);
+ current_matrix[row] |= pin_state ? 0 : (1 << col_index);
+ }
+ board_unselect_master_row(board, board_row);
+
+ return (last_row_value != current_matrix[row]);
+}
+
+static void board_master_init(void) {
+ board_info_t* board = get_master_board();
+ if (!board) {
+ return;
+ }
+ for (uint8_t x = 0; x < NUM_COLS; x++) {
+ setPinInputHigh(board->col_pins[x]);
+ }
+ board->initialized = true;
+}
+
+static void board_setup(void) {
+ for (uint8_t i = 0; i < NUM_BOARDS; i++) {
+ board_info_t* board = &boards[i];
+ board->interface = get_interface(board);
+ }
+}
+
+//
+// Public functions
+//
+
+// NOTE: Do not call this while matrix scanning...
+void board_set_led_by_index(uint8_t board_index, uint8_t led_index, bool status) {
+ board_info_t* board = get_board_by_index(board_index);
+ if (!board) return;
+ if (led_index < 0 || led_index > NUM_LEDS) return;
+ (*board->interface->set_led)(board, led_index, status);
+}
+
+bool board_read_cols_on_row(matrix_row_t current_matrix[], uint8_t row) {
+ bool result = false;
+ board_info_t* board = get_board(row);
+ if (!board) {
+ return false;
+ }
+ result = (*board->interface->read_cols_on_row)(board, current_matrix, row);
+ return result;
+}
+
+void board_select_row(uint8_t row) {
+ board_info_t* board = get_board(row);
+ if (!board) {
+ return;
+ }
+ uint8_t board_row = matrix2board(row);
+ (*board->interface->select_row)(board, board_row);
+}
+
+void board_unselect_row(uint8_t row) {
+ board_info_t* board = get_board(row);
+ if (!board) {
+ return;
+ }
+ uint8_t board_row = matrix2board(row);
+ (*board->interface->unselect_row)(board, board_row);
+}
+
+void board_unselect_rows(void) {
+ for (uint8_t i = 0; i < NUM_BOARDS; i++) {
+ board_info_t* board = &boards[i];
+ (*board->interface->unselect_rows)(board);
+ }
+}
+
+void board_init(void) {
+ board_setup();
+ board_master_init();
+ board_slave_init();
+ board_unselect_rows();
+}