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/*
Copyright 2012 Jun Wako <wakojun@gmail.com>
Copyright 2013 Oleg Kostyuk <cub.uanic@gmail.com>
Copyright 2015 ZSA Technology Labs Inc (@zsa)
Copyright 2020 Christopher Courtney <drashna@live.com> (@drashna)

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 "i2c_master.h"

// I2C aliases and register addresses (see "mcp23018.md")
#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 i2c_status_t mcp23018_status;
#define ERGODOX_EZ_I2C_TIMEOUT 100

void init_ergodox(void);
void ergodox_blink_all_leds(void);
uint8_t init_mcp23018(void);
uint8_t ergodox_left_leds_update(void);

#ifndef LED_BRIGHTNESS_LO
#define LED_BRIGHTNESS_LO       15
#endif
#ifndef LED_BRIGHTNESS_HI
#define LED_BRIGHTNESS_HI       255
#endif


inline void ergodox_board_led_on(void)      { DDRD |=  (1<<6); PORTD |=  (1<<6); }
inline void ergodox_right_led_1_on(void)    { DDRB |=  (1<<5); PORTB |=  (1<<5); }
inline void ergodox_right_led_2_on(void)    { DDRB |=  (1<<6); PORTB |=  (1<<6); }
inline void ergodox_right_led_3_on(void)    { DDRB |=  (1<<7); PORTB |=  (1<<7); }
inline void ergodox_right_led_on(uint8_t led) { DDRB |= (1<<(led+4)); PORTB |= (1<<(led+4)); }

inline void ergodox_board_led_off(void)     { DDRD &= ~(1<<6); PORTD &= ~(1<<6); }
inline void ergodox_right_led_1_off(void)   { DDRB &= ~(1<<5); PORTB &= ~(1<<5); }
inline void ergodox_right_led_2_off(void)   { DDRB &= ~(1<<6); PORTB &= ~(1<<6); }
inline void ergodox_right_led_3_off(void)   { DDRB &= ~(1<<7); PORTB &= ~(1<<7); }
inline void ergodox_right_led_off(uint8_t led) { DDRB &= ~(1<<(led+4)); PORTB &= ~(1<<(led+4)); }

#ifdef LEFT_LEDS
bool ergodox_left_led_1;
bool ergodox_left_led_2;
bool ergodox_left_led_3;

inline void ergodox_left_led_1_on(void)    { ergodox_left_led_1 = 1; }
inline void ergodox_left_led_2_on(void)    { ergodox_left_led_2 = 1; }
inline void ergodox_left_led_3_on(void)    { ergodox_left_led_3 = 1; }

inline void ergodox_left_led_1_off(void)    { ergodox_left_led_1 = 0; }
inline void ergodox_left_led_2_off(void)    { ergodox_left_led_2 = 0; }
inline void ergodox_left_led_3_off(void)    { ergodox_left_led_3 = 0; }
#endif // LEFT_LEDS

inline void ergodox_led_all_on(void) {
    ergodox_board_led_on();
    ergodox_right_led_1_on();
    ergodox_right_led_2_on();
    ergodox_right_led_3_on();
#ifdef LEFT_LEDS
    ergodox_left_led_1_on();
    ergodox_left_led_2_on();
    ergodox_left_led_3_on();
#endif // LEFT_LEDS
}

inline void ergodox_led_all_off(void)
{
    ergodox_board_led_off();
    ergodox_right_led_1_off();
    ergodox_right_led_2_off();
    ergodox_right_led_3_off();
#ifdef LEFT_LEDS
    ergodox_left_led_1_off();
    ergodox_left_led_2_off();
    ergodox_left_led_3_off();
#endif // LEFT_LEDS
}

inline void ergodox_right_led_1_set(uint8_t n)    { OCR1A = n; }
inline void ergodox_right_led_2_set(uint8_t n)    { OCR1B = n; }
inline void ergodox_right_led_3_set(uint8_t n)    { OCR1C = n; }
inline void ergodox_right_led_set(uint8_t led, uint8_t n)  {
    (led == 1) ? (OCR1A = n) :
    (led == 2) ? (OCR1B = n) :
                 (OCR1C = n);
}

inline void ergodox_led_all_set(uint8_t n) {
    ergodox_right_led_1_set(n);
    ergodox_right_led_2_set(n);
    ergodox_right_led_3_set(n);
}

enum ergodox_ez_keycodes {
    LED_LEVEL = QK_KB_0,
    TOGGLE_LAYER_COLOR,
};

#ifndef WEBUSB_ENABLE
#    define WEBUSB_PAIR KC_NO
#endif

typedef union {
  uint32_t raw;
  struct {
    uint8_t    led_level :3;
    bool       disable_layer_led   :1;
    bool       rgb_matrix_enable   :1;
  };
} keyboard_config_t;

extern keyboard_config_t keyboard_config;

/*  ---- LEFT HAND ----     ---- RIGHT HAND ---- */
#define LED_LAYOUT_ergodox_pretty(                \
    L01,L02,L03,L04,L05,    R01,R02,R03,R04,R05,  \
    L11,L12,L13,L14,L15,    R11,R12,R13,R14,R15,  \
    L21,L22,L23,L24,L25,    R21,R22,R23,R24,R25,  \
    L31,L32,L33,L34,L35,    R31,R32,R33,R34,R35,  \
    L41,L42,L43,L44,            R42,R43,R44,R45 ) \
                                                  \
   /* matrix positions */                         \
    { R01, R02, R03, R04, R05,                    \
      R11, R12, R13, R14, R15,                    \
      R21, R22, R23, R24, R25,                    \
      R31, R32, R33, R34, R35,                    \
           R42, R43, R44, R45,                    \
                                                  \
      L05, L04, L03, L02, L01,                    \
      L15, L14, L13, L12, L11,                    \
      L25, L24, L23, L22, L21,                    \
      L35, L34, L33, L32, L31,                    \
           L44, L43, L42, L41                     \
    }