~ruther/qmk_firmware

2196dc9f868334beabd8c3585127a74bf42ce6b7 — Pekaso 7 years ago 9fb1e5d
Add support for staggerd column layout KB "Fortitude60" (#3090)

* modifying fortitude for working

* add accurate keymap

* backlight fix

* Fix slave LED Backlight

* Add readme.md

* modified readme.md

* Fixed make error

* Commit including suggestions

* Add dvorak and colemak layout and some fix
A keyboards/fortitude60/config.h => keyboards/fortitude60/config.h +23 -0
@@ 0,0 1,23 @@
/*
Copyright 2017 Danny Nguyen <danny@hexwire.com>

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/>.
*/

#ifndef CONFIG_H
#define CONFIG_H

#include "config_common.h"

#endif  // CONFIG_H

A keyboards/fortitude60/fortitude60.c => keyboards/fortitude60/fortitude60.c +1 -0
@@ 0,0 1,1 @@
#include "fortitude60.h"

A keyboards/fortitude60/fortitude60.h => keyboards/fortitude60/fortitude60.h +26 -0
@@ 0,0 1,26 @@
#ifndef FORTITUDE60_H
#define FORTITUDE60_H

#ifdef KEYBOARD_fortitude60_rev1
    #include "rev1.h"
#endif

#include "quantum.h"

// Used to create a keymap using only KC_ prefixed keys
#define LAYOUT_kc( \
    L00, L01, L02, L03, L04, L05,           R00, R01, R02, R03, R04, R05, \
    L10, L11, L12, L13, L14, L15,           R10, R11, R12, R13, R14, R15, \
    L20, L21, L22, L23, L24, L25,           R20, R21, R22, R23, R24, R25, \
    L30, L31, L32, L33, L34, L35, LT5, RT5, R30, R31, R32, R33, R34, R35, \
              LT0, LT1, LT2, LT3, LT4, RT4, RT3, RT2, RT1, RT0 \
    ) \
    LAYOUT( \
        KC_##L00, KC_##L01, KC_##L02, KC_##L03, KC_##L04, KC_##L05,                     KC_##R00, KC_##R01, KC_##R02, KC_##R03, KC_##R04, KC_##R05, \
        KC_##L10, KC_##L11, KC_##L12, KC_##L13, KC_##L14, KC_##L15,                     KC_##R10, KC_##R11, KC_##R12, KC_##R13, KC_##R14, KC_##R15, \
        KC_##L20, KC_##L21, KC_##L22, KC_##L23, KC_##L24, KC_##L25,                     KC_##R20, KC_##R21, KC_##R22, KC_##R23, KC_##R24, KC_##R25, \
        KC_##L30, KC_##L31, KC_##L32, KC_##L33, KC_##L34, KC_##L35, KC_##LT5, KC_##RT5, KC_##R30, KC_##R31, KC_##R32, KC_##R33, KC_##R34, KC_##R35, \
                            KC_##LT0, KC_##LT1, KC_##LT2, KC_##LT3, KC_##LT4, KC_##RT4, KC_##RT3, KC_##RT2, KC_##RT1, KC_##RT0 \
    )

#endif

A keyboards/fortitude60/keymaps/default/config.h => keyboards/fortitude60/keymaps/default/config.h +39 -0
@@ 0,0 1,39 @@
/*
Copyright 2017 Danny Nguyen <danny@hexwire.com>

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/>.
*/

#ifndef CONFIG_USER_H
#define CONFIG_USER_H

#include "config_common.h"

#define USE_SERIAL

/* Select hand configuration */

// #define MASTER_LEFT
// #define MASTER_RIGHT
#define EE_HANDS

#define USE_SERIAL_PD2
/* #undef RGBLED_NUM */
/* #define RGBLIGHT_ANIMATIONS */
/* #define RGBLED_NUM 12 */
/* #define RGBLIGHT_HUE_STEP 8 */
/* #define RGBLIGHT_SAT_STEP 8 */
/* #define RGBLIGHT_VAL_STEP 8 */

#endif

A keyboards/fortitude60/keymaps/default/keymap.c => keyboards/fortitude60/keymaps/default/keymap.c +189 -0
@@ 0,0 1,189 @@
#include QMK_KEYBOARD_H
#include "eeconfig.h"

extern keymap_config_t keymap_config;

// Each layer gets a name for readability, which is then used in the keymap matrix below.
// The underscores don't mean anything - you can have a layer called STUFF or any other name.
// Layer names don't all need to be of the same length, obviously, and you can also skip them
// entirely and just use numbers.
#define _QWERTY 0
#define _COLEMAK 1
#define _DVORAK 2
#define _LOWER 3
#define _RAISE 4
#define _ADJUST 16

enum custom_keycodes {
  QWERTY = SAFE_RANGE,
  COLEMAK,
  DVORAK,
  LOWER,
  RAISE,
  ADJUST,
};

// Fillers to make layering more clear
#define _______ KC_TRNS
#define XXXXXXX KC_NO
#define LOWER MO(_LOWER)
#define RAISE MO(_RAISE)

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {

/* Qwerty
 * ,-----------------------------------------.             ,-----------------------------------------.
 * |   `  |   1  |   2  |   3  |   4  |   5  |             |   6  |   7  |   8  |   9  |   0  | Del  |
 * |------+------+------+------+------+------|             |------+------+------+------+------+------|
 * | Tab  |   Q  |   W  |   E  |   R  |   T  |             |   Y  |   U  |   I  |   O  |   P  | Bksp |
 * |------+------+------+------+------+------|             |------+------+------+------+------+------|
 * | Esc  |   A  |   S  |   D  |   F  |   G  |             |   H  |   J  |   K  |   L  |   ;  |  "   |
 * |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
 * | Shift|   Z  |   X  |   C  |   V  |   B  |   [  |   ]  |   N  |   M  |   ,  |   .  |   /  |Enter |
 * `-------------+------+------+------+------+------+------+------+------+------+------+-------------'
 *               |  GUI | Ctrl |Lower |Space | Ctrl |Enter |Space |Raise |  Alt |  GUI |
 *               `---------------------------------------------------------------------'
 */
[_QWERTY] = LAYOUT( \
  KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,                   KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL, \
  KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,                   KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC, \
  KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,                   KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, \
  KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B, KC_LBRC, KC_RBRC, KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT , \
                 KC_LGUI, KC_LALT,   LOWER,  KC_SPC, KC_LCTL,  KC_ENT, KC_SPC, RAISE,    KC_RALT, KC_RGUI\
),

/* Colemak
 * ,-----------------------------------------.             ,-----------------------------------------.
 * |   `  |   1  |   2  |   3  |   4  |   5  |             |   6  |   7  |   8  |   9  |   0  | Del  |
 * |------+------+------+------+------+------|             |------+------+------+------+------+------|
 * | Tab  |   Q  |   W  |   F  |   P  |   G  |             |   J  |   L  |   U  |   Y  |   ;  | Bksp |
 * |------+------+------+------+------+------|             |------+------+------+------+------+------|
 * | Esc  |   A  |   R  |   S  |   T  |   D  |             |   H  |   N  |   E  |   I  |   O  |  "   |
 * |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
 * | Shift|   Z  |   X  |   C  |   V  |   B  |   [  |   ]  |   K  |   M  |   ,  |   .  |   /  |Enter |
 * `-------------+------+------+------+------+------+------+------+------+------+------+-------------'
 *               |  GUI | Ctrl |Lower |Space | Ctrl |Enter |Space |Raise |  Alt | GUI |
 *               `---------------------------------------------------------------------'
 */
[_COLEMAK] = LAYOUT( \
  KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,                   KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL, \
  KC_TAB,  KC_Q,    KC_W,    KC_F,    KC_P,    KC_G,                   KC_J,    KC_L,    KC_U,    KC_Y,    KC_SCLN, KC_BSPC, \
  KC_ESC,  KC_A,    KC_R,    KC_S,    KC_T,    KC_D,                   KC_H,    KC_N,    KC_E,    KC_I,    KC_O,    KC_QUOT, \
  KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B, KC_LBRC, KC_RBRC, KC_K,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT , \
                 KC_LGUI, KC_LALT,   LOWER,  KC_SPC, KC_LCTL,  KC_ENT, KC_SPC, RAISE,    KC_RALT, KC_RGUI\
),

/* Dvorak
 * ,-----------------------------------------.             ,-----------------------------------------.
 * |   `  |   1  |   2  |   3  |   4  |   5  |             |   6  |   7  |   8  |   9  |   0  | Del  |
 * |------+------+------+------+------+------|             |------+------+------+------+------+------|
 * | Tab  |   "  |   ,  |   .  |   P  |   Y  |             |   F  |   G  |   C  |   R  |   L  | Bksp |
 * |------+------+------+------+------+------|             |------+------+------+------+------+------|
 * | Esc  |   A  |   O  |   E  |   U  |   I  |             |   D  |   H  |   T  |   N  |   S  |  /   |
 * |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
 * | Shift|   ;  |   Q  |   J  |   K  |   X  |   [  |   ]  |   B  |   M  |   W  |   V  |   Z  |Enter |
 * `-------------+------+------+------+------+------+------+------+------+------+------+-------------'
 *               |  GUI | Ctrl |Lower |Space | Ctrl |Enter |Space |Raise |  Alt |  GUI |
 *               `---------------------------------------------------------------------'
 */
[_DVORAK] = LAYOUT( \
  KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,                   KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL, \
  KC_TAB,  KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,                   KC_F,    KC_G,    KC_C,    KC_R,    KC_L,    KC_BSPC, \
  KC_ESC,  KC_A,    KC_O,    KC_E,    KC_U,    KC_I,                   KC_D,    KC_H,    KC_T,    KC_N,    KC_S,    KC_SLSH, \
  KC_LSFT, KC_SCLN, KC_Q,    KC_J,    KC_K,    KC_X, KC_LBRC, KC_RBRC, KC_B,    KC_M,    KC_W,    KC_V,    KC_Z,    KC_ENT , \
                 KC_LGUI, KC_LALT,   LOWER,  KC_SPC, KC_LCTL,  KC_ENT, KC_SPC, RAISE,    KC_RALT, KC_RGUI\
),

/* Lower
 * ,-----------------------------------------.             ,-----------------------------------------.
 * |   ~  |   !  |   @  |   #  |   $  |   %  |             |   ^  |   &  |   *  |   (  |   )  |      |
 * |------+------+------+------+------+------|             |------+------+------+------+------+------|
 * |   ~  |   !  |   @  |   #  |   $  |   %  |             |   ^  |   &  |   *  |   (  |   )  | Del  |
 * |------+------+------+------+------+------|             |------+------+------+------+------+------|
 * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |             |  F6  |   _  |   +  |      |   \  |  |   |
 * |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
 * |      |  F7  |  F8  |  F9  |  F10 |  F11 |      |      |  F12 |ISO ~ |ISO | |      |      |      |
 * `-------------+------+------+------+------+------+------+------+------+------+------+-------------'
 *               |      |      |      |      |      |      |      |      |      |      |
 *               `---------------------------------------------------------------------'
 */
[_LOWER] = LAYOUT( \
  KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC,                   KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, _______, \
  KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC,                   KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_DEL,  \
  KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,                     KC_F6,   KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE, \
  _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  _______, _______, KC_F12,S(KC_NUHS),S(KC_NUBS),_______, _______, _______,\
                    _______, _______, _______, _______, _______, _______,  _______, _______, _______, _______\
),

/* Raise
 * ,-----------------------------------------.             ,-----------------------------------------.
 * |   `  |   1  |   2  |   3  |   4  |   5  |             |   6  |   7  |   8  |   9  |   0  | Del  |
 * |------+------+------+------+------+------.             ,------+------+------+------+------+------|
 * |   `  |   1  |   2  |   3  |   4  |   5  |             |   6  |   7  |   8  |   9  |   0  | Bksp |
 * |------+------+------+------+------+------.             ,------+------+------+------+------+------|
 * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |             |  F6  |   -  |   =  |   [  |   ]  |  |   |
 * |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
 * |      |  F7  |  F8  |  F9  |  F10 |  F11 |      |      |  F12 |ISO # |ISO / |      |      |      |
 * `-------------+------+------+------+------+------+------+------+------+------+------+-------------'
 *               |      |      |      |      |      |      |      |      |      |      |
 *               `---------------------------------------------------------------------'
 */
[_RAISE] = LAYOUT( \
  KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,                       KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL,  \
  KC_GRV,  KC_1,    KC_UP,   KC_3,    KC_4,    KC_5,                       KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSPC, \
  KC_DEL,  KC_LEFT, KC_DOWN, KC_RGHT, KC_F4,   KC_F5,                      KC_F6,KC_MINS,  KC_EQL, KC_LBRC, KC_RBRC,    KC_BSLS, \
  _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  _______, _______,  KC_F12,  KC_NUHS, KC_NUBS, _______, _______, _______, \
                    _______, _______, _______, _______, _______, _______,  _______, _______, _______, _______\
),

/* Adjust (Lower + Raise)
 * ,-----------------------------------------.             ,-----------------------------------------.
 * |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |             |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
 * |------+------+------+------+------+------.             ,------+------+------+------+------+------|
 * |      | Reset|RGB Tg|RGB Md|Hue Up|Hue Dn|             |Sat Up|Sat Dn|Val Up|Val Dn|      | Bksp |
 * |------+------+------+------+------+------.             ,------+------+------+------+------+------|
 * |      |      |      |Aud on|Audoff|AGnorm|             |AGswap|      |BL TOG|BL STP|      |      |
 * |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
 * |Qwerty|Colemk|Dvorak|      |      |      |      |      |      |      |      |      |      |      |
 * `-------------+------+------+------+------+------+------+------+------+------+------+-------------'
 *               |      |      |      |      |      |      |      |      |      |      |
 *               `---------------------------------------------------------------------'
 */
[_ADJUST] =  LAYOUT( \
  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,                     KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12, \
  _______, RESET  , RGB_TOG, RGB_MOD, RGB_HUD, RGB_HUI,                   RGB_SAD, RGB_SAI, RGB_VAD, RGB_VAI, _______, KC_BSPC, \
  _______, _______, _______, AU_ON,   AU_OFF,  AG_NORM,                   AG_SWAP, _______, BL_TOGG, BL_STEP, _______, _______, \
  QWERTY,  COLEMAK, DVORAK,  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
                    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______\
)


};

uint32_t layer_state_set_user(uint32_t state) {
  return update_tri_layer_state(state, _LOWER, _RAISE, _ADJUST);
}

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
  switch (keycode) {
    case QWERTY:
      if (record->event.pressed) {
        set_single_persistent_default_layer(_QWERTY);
      }
      return false;
      break;
    case COLEMAK:
      if (record->event.pressed) {
        set_single_persistent_default_layer(_COLEMAK);
      }
      return false;
      break;
    case DVORAK:
      if (record->event.pressed) {
        set_single_persistent_default_layer(_DVORAK);
      }
      return false;
      break;
  }
  return true;
}

A keyboards/fortitude60/keymaps/default/rules.mk => keyboards/fortitude60/keymaps/default/rules.mk +1 -0
@@ 0,0 1,1 @@
RGBLIGHT_ENABLE = no

A keyboards/fortitude60/matrix.c => keyboards/fortitude60/matrix.c +423 -0
@@ 0,0 1,423 @@
/*
Copyright 2017 Danny Nguyen <danny@keeb.io>

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/>.
*/

/*
 * scan matrix
 */
#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include "wait.h"
#include "print.h"
#include "debug.h"
#include "util.h"
#include "matrix.h"
#include "split_util.h"
#include "pro_micro.h"
#include "config.h"
#include "timer.h"

#ifdef BACKLIGHT_ENABLE
#include "backlight.h"
extern backlight_config_t backlight_config;
#endif

#include "serial.h"

#ifndef DEBOUNCING_DELAY
#   define DEBOUNCING_DELAY 5
#endif

#if (DEBOUNCING_DELAY > 0)
    static uint16_t debouncing_time;
    static bool debouncing = false;
#endif

#if (MATRIX_COLS <= 8)
#    define print_matrix_header()  print("\nr/c 01234567\n")
#    define print_matrix_row(row)  print_bin_reverse8(matrix_get_row(row))
#    define matrix_bitpop(i)       bitpop(matrix[i])
#    define ROW_SHIFTER ((uint8_t)1)
#else
#    error "Currently only supports 8 COLS"
#endif
static matrix_row_t matrix_debouncing[MATRIX_ROWS];

#define ERROR_DISCONNECT_COUNT 5

#define SERIAL_LED_ADDR 0x00

#define ROWS_PER_HAND (MATRIX_ROWS/2)

static uint8_t error_count = 0;

static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;

/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t matrix_debouncing[MATRIX_ROWS];

#if (DIODE_DIRECTION == COL2ROW)
    static void init_cols(void);
    static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
    static void unselect_rows(void);
    static void select_row(uint8_t row);
    static void unselect_row(uint8_t row);
#elif (DIODE_DIRECTION == ROW2COL)
    static void init_rows(void);
    static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
    static void unselect_cols(void);
    static void unselect_col(uint8_t col);
    static void select_col(uint8_t col);
#endif


__attribute__ ((weak))
void matrix_init_kb(void) {
    matrix_init_user();
}

__attribute__ ((weak))
void matrix_scan_kb(void) {
    matrix_scan_user();
}

__attribute__ ((weak))
void matrix_init_user(void) {
}

__attribute__ ((weak))
void matrix_scan_user(void) {
}

inline
uint8_t matrix_rows(void)
{
    return MATRIX_ROWS;
}

inline
uint8_t matrix_cols(void)
{
    return MATRIX_COLS;
}

void matrix_init(void)
{
    debug_enable = true;
    debug_matrix = true;
    debug_mouse = true;
    // initialize row and col
    unselect_rows();
    init_cols();

    TX_RX_LED_INIT;

    // initialize matrix state: all keys off
    for (uint8_t i=0; i < MATRIX_ROWS; i++) {
        matrix[i] = 0;
        matrix_debouncing[i] = 0;
    }

    matrix_init_quantum();

}

uint8_t _matrix_scan(void)
{
    int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
#if (DIODE_DIRECTION == COL2ROW)
    // Set row, read cols
    for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
#       if (DEBOUNCING_DELAY > 0)
            bool matrix_changed = read_cols_on_row(matrix_debouncing+offset, current_row);

            if (matrix_changed) {
                debouncing = true;
                debouncing_time = timer_read();
            }

#       else
            read_cols_on_row(matrix+offset, current_row);
#       endif

    }

#elif (DIODE_DIRECTION == ROW2COL)
    // Set col, read rows
    for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
#       if (DEBOUNCING_DELAY > 0)
            bool matrix_changed = read_rows_on_col(matrix_debouncing+offset, current_col);
            if (matrix_changed) {
                debouncing = true;
                debouncing_time = timer_read();
            }
#       else
             read_rows_on_col(matrix+offset, current_col);
#       endif

    }
#endif

#   if (DEBOUNCING_DELAY > 0)
        if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) {
            for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
                matrix[i+offset] = matrix_debouncing[i+offset];
            }
            debouncing = false;
        }
#   endif

    return 1;
}

int serial_transaction(void) {
    int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;

    if (serial_update_buffers()) {
        return 1;
    }

    for (int i = 0; i < ROWS_PER_HAND; ++i) {
        matrix[slaveOffset+i] = serial_slave_buffer[i];
    }

#ifdef BACKLIGHT_ENABLE
    // Write backlight level for slave to read
    serial_master_buffer[SERIAL_LED_ADDR] = backlight_config.enable ? backlight_config.level : 0;
#endif
    return 0;
}


uint8_t matrix_scan(void)
{
    uint8_t ret = _matrix_scan();

    if( serial_transaction() ) {
        // turn on the indicator led when halves are disconnected
        TXLED1;

        error_count++;

        if (error_count > ERROR_DISCONNECT_COUNT) {
            // reset other half if disconnected
            int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
            for (int i = 0; i < ROWS_PER_HAND; ++i) {
                matrix[slaveOffset+i] = 0;
            }
        }
    } else {
        // turn off the indicator led on no error
        TXLED0;
        error_count = 0;
    }
    matrix_scan_quantum();
    return ret;
}

void matrix_slave_scan(void) {
    _matrix_scan();

    int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;

    for (int i = 0; i < ROWS_PER_HAND; ++i) {
        serial_slave_buffer[i] = matrix[offset+i];
    }

#ifdef BACKLIGHT_ENABLE
    // Read backlight level sent from master and update level on slave
    backlight_set(serial_master_buffer[SERIAL_LED_ADDR]);
#endif
}

bool matrix_is_modified(void)
{
    if (debouncing) return false;
    return true;
}

inline
bool matrix_is_on(uint8_t row, uint8_t col)
{
    return (matrix[row] & ((matrix_row_t)1<<col));
}

inline
matrix_row_t matrix_get_row(uint8_t row)
{
    return matrix[row];
}

void matrix_print(void)
{
    print("\nr/c 0123456789ABCDEF\n");
    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
        phex(row); print(": ");
        pbin_reverse16(matrix_get_row(row));
        print("\n");
    }
}

uint8_t matrix_key_count(void)
{
    uint8_t count = 0;
    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
        count += bitpop16(matrix[i]);
    }
    return count;
}

#if (DIODE_DIRECTION == COL2ROW)

static void init_cols(void)
{
    for(uint8_t x = 0; x < MATRIX_COLS; x++) {
        uint8_t pin = col_pins[x];
        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
    }
}

static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
{
    // Store last value of row prior to reading
    matrix_row_t last_row_value = current_matrix[current_row];

    // Clear data in matrix row
    current_matrix[current_row] = 0;

    // Select row and wait for row selecton to stabilize
    select_row(current_row);
    wait_us(30);

    // For each col...
    for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {

        // Select the col pin to read (active low)
        uint8_t pin = col_pins[col_index];
        uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));

        // Populate the matrix row with the state of the col pin
        current_matrix[current_row] |=  pin_state ? 0 : (ROW_SHIFTER << col_index);
    }

    // Unselect row
    unselect_row(current_row);

    return (last_row_value != current_matrix[current_row]);
}

static void select_row(uint8_t row)
{
    uint8_t pin = row_pins[row];
    _SFR_IO8((pin >> 4) + 1) |=  _BV(pin & 0xF); // OUT
    _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
}

static void unselect_row(uint8_t row)
{
    uint8_t pin = row_pins[row];
    _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
    _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
}

static void unselect_rows(void)
{
    for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
        uint8_t pin = row_pins[x];
        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
    }
}

#elif (DIODE_DIRECTION == ROW2COL)

static void init_rows(void)
{
    for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
        uint8_t pin = row_pins[x];
        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
    }
}

static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
{
    bool matrix_changed = false;

    // Select col and wait for col selecton to stabilize
    select_col(current_col);
    wait_us(30);

    // For each row...
    for(uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++)
    {

        // Store last value of row prior to reading
        matrix_row_t last_row_value = current_matrix[row_index];

        // Check row pin state
        if ((_SFR_IO8(row_pins[row_index] >> 4) & _BV(row_pins[row_index] & 0xF)) == 0)
        {
            // Pin LO, set col bit
            current_matrix[row_index] |= (ROW_SHIFTER << current_col);
        }
        else
        {
            // Pin HI, clear col bit
            current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
        }

        // Determine if the matrix changed state
        if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
        {
            matrix_changed = true;
        }
    }

    // Unselect col
    unselect_col(current_col);

    return matrix_changed;
}

static void select_col(uint8_t col)
{
    uint8_t pin = col_pins[col];
    _SFR_IO8((pin >> 4) + 1) |=  _BV(pin & 0xF); // OUT
    _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
}

static void unselect_col(uint8_t col)
{
    uint8_t pin = col_pins[col];
    _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
    _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
}

static void unselect_cols(void)
{
    for(uint8_t x = 0; x < MATRIX_COLS; x++) {
        uint8_t pin = col_pins[x];
        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
    }
}

#endif

A keyboards/fortitude60/readme.md => keyboards/fortitude60/readme.md +15 -0
@@ 0,0 1,15 @@
# Fortitude60

![Fortitude60](https://i.imgur.com/Tbznwgg.jpg)

👊A 60% (12x5) split keyboard with staggerd column layout.👊

Keyboard Maintainer: [Pekaso](https://github.com/Pekaso) [@Pekaso](https://twitter.com/Pekaso)  
Hardware Supported: Fortitude60 PCB, Beetle 32u4  
Hardware Availability: [plustk2s.com](http://plustk2s.com)

Make example for this keyboard (after setting up your build environment):

    make fortitude60/rev1:default:avrdude

See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.
\ No newline at end of file

A keyboards/fortitude60/rev1/config.h => keyboards/fortitude60/rev1/config.h +91 -0
@@ 0,0 1,91 @@
/*
Copyright 2017 Danny Nguyen <danny@keeb.io>

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/>.
*/

#ifndef REV1_CONFIG_H
#define REV1_CONFIG_H

#include QMK_KEYBOARD_CONFIG_H

/* USB Device descriptor parameter */
#define VENDOR_ID       0xCB10
#define PRODUCT_ID      0x1156
#define DEVICE_VER      0x0100
#define MANUFACTURER    Pekaso
#define PRODUCT         The Fortitude60 Keyboard
#define DESCRIPTION     Split 60 keyboard.

/* key matrix size */
// Rows are doubled-up
#define MATRIX_ROWS 10
#define MATRIX_COLS 6

// wiring of each half
#define MATRIX_ROW_PINS { D1, D0, D3, B7, B6 }
#define MATRIX_COL_PINS { F7, F6, F5, B3, B2, B1 }

/* COL2ROW or ROW2COL */
#define DIODE_DIRECTION COL2ROW

/* define if matrix has ghost */
//#define MATRIX_HAS_GHOST

/* number of backlight levels */
#ifdef BACKLIGHT_ENABLE
  #define BACKLIGHT_PIN B5
  #define BACKLIGHT_LEVELS 9
//  #define BACKLIGHT_BREATHING
#endif

/* Set 0 if debouncing isn't needed */
#define DEBOUNCING_DELAY 5

/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
#define LOCKING_SUPPORT_ENABLE
/* Locking resynchronize hack */
#define LOCKING_RESYNC_ENABLE

/* key combination for command */
#define IS_COMMAND() ( \
    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
)

/* ws2812 RGB LED */
/* #define RGB_DI_PIN D3 */
/* #define RGBLIGHT_TIMER */
/* #define RGBLED_NUM 16    // Number of LEDs */
/* #define ws2812_PORTREG  PORTD */
/* #define ws2812_DDRREG   DDRD */

/*
 * Feature disable options
 *  These options are also useful to firmware size reduction.
 */

/* disable debug print */
// #define NO_DEBUG

/* disable print */
// #define NO_PRINT

/* disable action features */
//#define NO_ACTION_LAYER
//#define NO_ACTION_TAPPING
//#define NO_ACTION_ONESHOT
//#define NO_ACTION_MACRO
//#define NO_ACTION_FUNCTION

#endif

A keyboards/fortitude60/rev1/rev1.c => keyboards/fortitude60/rev1/rev1.c +22 -0
@@ 0,0 1,22 @@
#include "rev1.h"

#ifdef SSD1306OLED
void led_set_kb(uint8_t usb_led) {
    // put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
    led_set_user(usb_led);
}
#endif

void matrix_init_kb(void) {

    // // green led on
    // DDRD |= (1<<5);
    // PORTD &= ~(1<<5);

    // // orange led on
    // DDRB |= (1<<0);
    // PORTB &= ~(1<<0);

	matrix_init_user();
};


A keyboards/fortitude60/rev1/rev1.h => keyboards/fortitude60/rev1/rev1.h +44 -0
@@ 0,0 1,44 @@
#ifndef REV1_H
#define REV1_H

#include "fortitude60.h"

//void promicro_bootloader_jmp(bool program);
#include "quantum.h"


#ifdef USE_I2C
#include <stddef.h>
#ifdef __AVR__
	#include <avr/io.h>
	#include <avr/interrupt.h>
#endif
#endif

//void promicro_bootloader_jmp(bool program);

// Standard Keymap
// (TRRS jack on the left half is to the right, TRRS jack on the right half is to the left)
#define LAYOUT( \
	L00, L01, L02, L03, L04, L05,           R00, R01, R02, R03, R04, R05, \
	L10, L11, L12, L13, L14, L15,           R10, R11, R12, R13, R14, R15, \
	L20, L21, L22, L23, L24, L25,           R20, R21, R22, R23, R24, R25, \
	L30, L31, L32, L33, L34, L35, LT5, RT5, R30, R31, R32, R33, R34, R35, \
              LT0, LT1, LT2, LT3, LT4, RT4, RT3, RT2, RT1, RT0                    \
	) \
	{ \
		{ L00, L01, L02, L03, L04, L05 }, \
		{ L10, L11, L12, L13, L14, L15 }, \
		{ L20, L21, L22, L23, L24, L25 }, \
		{ L30, L31, L32, L33, L34, L35 }, \
		{ LT0, LT1, LT2, LT3, LT4, LT5 }, \
		{ R05, R04, R03, R02, R01, R00 }, \
		{ R15, R14, R13, R12, R11, R10 }, \
		{ R25, R24, R23, R22, R21, R20 }, \
		{ R35, R34, R33, R32, R31, R30 }, \
		{ RT0, RT1, RT2, RT3, RT4, RT5 } \
	}

#define LAYOUT_ortho_5x12 LAYOUT

#endif

A keyboards/fortitude60/rev1/rules.mk => keyboards/fortitude60/rev1/rules.mk +1 -0
@@ 0,0 1,1 @@
BACKLIGHT_ENABLE = yes

A keyboards/fortitude60/rules.mk => keyboards/fortitude60/rules.mk +72 -0
@@ 0,0 1,72 @@
SRC += matrix.c \
       split_util.c \
       serial.c

# MCU name
#MCU = at90usb1287
MCU = atmega32u4

# Processor frequency.
#     This will define a symbol, F_CPU, in all source code files equal to the
#     processor frequency in Hz. You can then use this symbol in your source code to
#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
#     automatically to create a 32-bit value in your source code.
#
#     This will be an integer division of F_USB below, as it is sourced by
#     F_USB after it has run through any CPU prescalers. Note that this value
#     does not *change* the processor frequency - it should merely be updated to
#     reflect the processor speed set externally so that the code can use accurate
#     software delays.
F_CPU = 16000000

#
# LUFA specific
#
# Target architecture (see library "Board Types" documentation).
ARCH = AVR8

# Input clock frequency.
#     This will define a symbol, F_USB, in all source code files equal to the
#     input clock frequency (before any prescaling is performed) in Hz. This value may
#     differ from F_CPU if prescaling is used on the latter, and is required as the
#     raw input clock is fed directly to the PLL sections of the AVR for high speed
#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
#     at the end, this will be done automatically to create a 32-bit value in your
#     source code.
#
#     If no clock division is performed on the input clock inside the AVR (via the
#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
F_USB = $(F_CPU)

# Bootloader
#     This definition is optional, and if your keyboard supports multiple bootloaders of
#     different sizes, comment this out, and the correct address will be loaded 
#     automatically (+60). See bootloader.mk for all options.
BOOTLOADER = caterina

# Interrupt driven control endpoint task(+60)
OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT

# Build Options
#   change to "no" to disable the options, or define them in the Makefile in
#   the appropriate keymap folder that will get included automatically
#
BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
CONSOLE_ENABLE = no         # Console for debug(+400)
COMMAND_ENABLE = yes        # Commands for debug and configuration
NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
MIDI_ENABLE = no            # MIDI controls
AUDIO_ENABLE = no           # Audio output on port C6
UNICODE_ENABLE = no         # Unicode
BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
RGBLIGHT_ENABLE = no       # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
USE_SERIAL = yes	# Serial support only on fortitude60
# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
SLEEP_LED_ENABLE = yes    # Breathing sleep LED during USB suspend

CUSTOM_MATRIX = yes

DEFAULT_FOLDER = fortitude60/rev1

A keyboards/fortitude60/serial.c => keyboards/fortitude60/serial.c +235 -0
@@ 0,0 1,235 @@
/*
 * WARNING: be careful changing this code, it is very timing dependent
 */

#ifndef F_CPU
#define F_CPU 16000000
#endif

#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <stdbool.h>
#include "serial.h"

#ifndef USE_I2C

// Serial pulse period in microseconds. Its probably a bad idea to lower this
// value.
#define SERIAL_DELAY 24

uint8_t volatile serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH] = {0};
uint8_t volatile serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH] = {0};

#define SLAVE_DATA_CORRUPT (1<<0)
volatile uint8_t status = 0;

inline static
void serial_delay(void) {
  _delay_us(SERIAL_DELAY);
}

inline static
void serial_output(void) {
  SERIAL_PIN_DDR |= SERIAL_PIN_MASK;
}

// make the serial pin an input with pull-up resistor
inline static
void serial_input(void) {
  SERIAL_PIN_DDR  &= ~SERIAL_PIN_MASK;
  SERIAL_PIN_PORT |= SERIAL_PIN_MASK;
}

inline static
uint8_t serial_read_pin(void) {
  return !!(SERIAL_PIN_INPUT & SERIAL_PIN_MASK);
}

inline static
void serial_low(void) {
  SERIAL_PIN_PORT &= ~SERIAL_PIN_MASK;
}

inline static
void serial_high(void) {
  SERIAL_PIN_PORT |= SERIAL_PIN_MASK;
}

void serial_master_init(void) {
  serial_output();
  serial_high();
}

void serial_slave_init(void) {
  serial_input();

#ifndef USE_SERIAL_PD2
  // Enable INT0
  EIMSK |= _BV(INT0);
  // Trigger on falling edge of INT0
  EICRA &= ~(_BV(ISC00) | _BV(ISC01));
#else
  // Enable INT2
  EIMSK |= _BV(INT2);
  // Trigger on falling edge of INT2
  EICRA &= ~(_BV(ISC20) | _BV(ISC21));
#endif
}

// Used by the master to synchronize timing with the slave.
static
void sync_recv(void) {
  serial_input();
  // This shouldn't hang if the slave disconnects because the
  // serial line will float to high if the slave does disconnect.
  while (!serial_read_pin());
  serial_delay();
}

// Used by the slave to send a synchronization signal to the master.
static
void sync_send(void) {
  serial_output();

  serial_low();
  serial_delay();

  serial_high();
}

// Reads a byte from the serial line
static
uint8_t serial_read_byte(void) {
  uint8_t byte = 0;
  serial_input();
  for ( uint8_t i = 0; i < 8; ++i) {
    byte = (byte << 1) | serial_read_pin();
    serial_delay();
    _delay_us(1);
  }

  return byte;
}

// Sends a byte with MSB ordering
static
void serial_write_byte(uint8_t data) {
  uint8_t b = 8;
  serial_output();
  while( b-- ) {
    if(data & (1 << b)) {
      serial_high();
    } else {
      serial_low();
    }
    serial_delay();
  }
}

// interrupt handle to be used by the slave device
ISR(SERIAL_PIN_INTERRUPT) {
  sync_send();

  uint8_t checksum = 0;
  for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) {
    serial_write_byte(serial_slave_buffer[i]);
    sync_send();
    checksum += serial_slave_buffer[i];
  }
  serial_write_byte(checksum);
  sync_send();

  // wait for the sync to finish sending
  serial_delay();

  // read the middle of pulses
  _delay_us(SERIAL_DELAY/2);

  uint8_t checksum_computed = 0;
  for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) {
    serial_master_buffer[i] = serial_read_byte();
    sync_send();
    checksum_computed += serial_master_buffer[i];
  }
  uint8_t checksum_received = serial_read_byte();
  sync_send();

  serial_input(); // end transaction

  if ( checksum_computed != checksum_received ) {
    status |= SLAVE_DATA_CORRUPT;
  } else {
    status &= ~SLAVE_DATA_CORRUPT;
  }
}

inline
bool serial_slave_DATA_CORRUPT(void) {
  return status & SLAVE_DATA_CORRUPT;
}

// Copies the serial_slave_buffer to the master and sends the
// serial_master_buffer to the slave.
//
// Returns:
// 0 => no error
// 1 => slave did not respond
int serial_update_buffers(void) {
  // this code is very time dependent, so we need to disable interrupts
  cli();

  // signal to the slave that we want to start a transaction
  serial_output();
  serial_low();
  _delay_us(1);

  // wait for the slaves response
  serial_input();
  serial_high();
  _delay_us(SERIAL_DELAY);

  // check if the slave is present
  if (serial_read_pin()) {
    // slave failed to pull the line low, assume not present
    sei();
    return 1;
  }

  // if the slave is present syncronize with it
  sync_recv();

  uint8_t checksum_computed = 0;
  // receive data from the slave
  for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) {
    serial_slave_buffer[i] = serial_read_byte();
    sync_recv();
    checksum_computed += serial_slave_buffer[i];
  }
  uint8_t checksum_received = serial_read_byte();
  sync_recv();

  if (checksum_computed != checksum_received) {
    sei();
    return 2;
  }

  uint8_t checksum = 0;
  // send data to the slave
  for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) {
    serial_write_byte(serial_master_buffer[i]);
    sync_recv();
    checksum += serial_master_buffer[i];
  }
  serial_write_byte(checksum);
  sync_recv();

  // always, release the line when not in use
  serial_output();
  serial_high();

  sei();
  return 0;
}

#endif

A keyboards/fortitude60/serial.h => keyboards/fortitude60/serial.h +32 -0
@@ 0,0 1,32 @@
#ifndef MY_SERIAL_H
#define MY_SERIAL_H

#include "config.h"
#include <stdbool.h>

/* TODO:  some defines for interrupt setup */
#define SERIAL_PIN_DDR DDRD
#define SERIAL_PIN_PORT PORTD
#define SERIAL_PIN_INPUT PIND

#ifndef USE_SERIAL_PD2
#define SERIAL_PIN_MASK _BV(PD0)
#define SERIAL_PIN_INTERRUPT INT0_vect
#else
#define SERIAL_PIN_MASK _BV(PD2)
#define SERIAL_PIN_INTERRUPT INT2_vect
#endif

#define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
#define SERIAL_MASTER_BUFFER_LENGTH 1

// Buffers for master - slave communication
extern volatile uint8_t serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH];
extern volatile uint8_t serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH];

void serial_master_init(void);
void serial_slave_init(void);
int serial_update_buffers(void);
bool serial_slave_data_corrupt(void);

#endif

A keyboards/fortitude60/split_util.c => keyboards/fortitude60/split_util.c +85 -0
@@ 0,0 1,85 @@
#include <avr/io.h>
#include <avr/wdt.h>
#include <avr/power.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <avr/eeprom.h>
#include "split_util.h"
#include "matrix.h"
#include "keyboard.h"
#include "config.h"
#include "timer.h"

#include "serial.h"

volatile bool isLeftHand = true;

static void setup_handedness(void) {
  #ifdef EE_HANDS
    isLeftHand = eeprom_read_byte(EECONFIG_HANDEDNESS);
  #else
    // I2C_MASTER_RIGHT is deprecated, use MASTER_RIGHT instead, since this works for both serial and i2c
    #if defined(I2C_MASTER_RIGHT) || defined(MASTER_RIGHT)
      isLeftHand = !has_usb();
    #else
      isLeftHand = has_usb();
    #endif
  #endif
}

static void keyboard_master_setup(void) {
#ifdef USE_I2C
    i2c_master_init();
#ifdef SSD1306OLED
    matrix_master_OLED_init ();
#endif
#else
    serial_master_init();
#endif
}

static void keyboard_slave_setup(void) {
  timer_init();
#ifdef USE_I2C
    i2c_slave_init(SLAVE_I2C_ADDRESS);
#else
    serial_slave_init();
#endif
}

bool has_usb(void) {
  /* return (UDADDR & _BV(ADDEN)); */
   USBCON |= (1 << OTGPADE); //enables VBUS pad
   _delay_us(5);
   return (USBSTA & (1<<VBUS));  //checks state of VBUS
}

void split_keyboard_setup(void) {
   setup_handedness();

   if (isLeftHand) {
   /* if (has_usb()) { */
      keyboard_master_setup();
   } else {
      keyboard_slave_setup();
   }
   sei();
}

void keyboard_slave_loop(void) {
   matrix_init();

   while (1) {
      matrix_slave_scan();
   }
}

// this code runs before the usb and keyboard is initialized
void matrix_setup(void) {
    split_keyboard_setup();

    if (!isLeftHand) {
    /* if (!has_usb()) { */
        keyboard_slave_loop();
    }
}

A keyboards/fortitude60/split_util.h => keyboards/fortitude60/split_util.h +18 -0
@@ 0,0 1,18 @@
#ifndef SPLIT_KEYBOARD_UTIL_H
#define SPLIT_KEYBOARD_UTIL_H

#include <stdbool.h>
#include "eeconfig.h"

extern volatile bool isLeftHand;

// slave version of matix scan, defined in matrix.c
void matrix_slave_scan(void);

void split_keyboard_setup(void);
bool has_usb(void);
void keyboard_slave_loop(void);

void matrix_master_OLED_init (void);

#endif