/* Copyright 2018 REPLACE_WITH_YOUR_NAME
 *
 * 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/>.
 */

#pragma once

#include "quantum.h"
#include <stdint.h>
#include <stdbool.h>
#include <util/delay.h>

#define I2C_ADDR        0b0100000
#define I2C_ADDR_WRITE  ( (I2C_ADDR<<1) | I2C_WRITE )
#define I2C_ADDR_READ   ( (I2C_ADDR<<1) | I2C_READ  )
#define IODIRA          0x00            // i/o direction register
#define IODIRB          0x01
#define GPPUA           0x0C            // GPIO pull-up resistor register
#define GPPUB           0x0D
#define GPIOA           0x12            // general purpose i/o port register (write modifies OLAT)
#define GPIOB           0x13
#define OLATA           0x14            // output latch register
#define OLATB           0x15

extern uint8_t expander_status;
extern uint8_t expander_input_pin_mask;
extern bool i2c_initialized;

void init_expander(void);

#define XXX KC_NO

#define LAYOUT( \
         L12,      L14, L15, L16, L17,   R11, R12, R13, R14, R15, R16, R17, R18, R19, R1A, R1B, \
    L21, L22, L23, L24, L25, L26, L27,   R21, R22, R23, R24, R25, R26,      R28, R29, R2A, R2B, \
    L31, L32, L33, L34, L35, L36,        R31, R32, R33, R34, R35, R36, R37, R38, R39, R3A, R3B, \
    L41, L42, L43, L44, L45, L46,        R41, R42, R43, R44, R45, R46,      R48, \
    L51, L52, L53, L54, L55, L56,        R51, R52, R53, R54, R55,           R58,      R5A, \
    L61, L62, L63,      L65,             R61,      R63,      R65, R66,      R68, R69, R6A, R6B \
) { \
    { XXX, L12, XXX, L14, L15, L16, L17, R11, R12, R13, R14, R15, R16, R17, R18, R19, R1A, R1B }, \
    { L21, L22, L23, L24, L25, L26, L27, R21, R22, R23, R24, R25, R26, XXX, R28, R29, R2A, R2B }, \
    { L31, L32, L33, L34, L35, L36, XXX, R31, R32, R33, R34, R35, R36, R37, R38, R39, R3A, R3B }, \
    { L41, L42, L43, L44, L45, L46, XXX, R41, R42, R43, R44, R45, R46, XXX, R48, XXX, XXX, XXX }, \
    { L51, L52, L53, L54, L55, L56, XXX, R51, R52, R53, R54, R55, XXX, XXX, R58, XXX, R5A, XXX }, \
    { L61, L62, L63, XXX, L65, XXX, XXX, R61, XXX, R63, XXX, R65, R66, XXX, R68, R69, R6A, R6B } \
}