qmk-firmware/layouts/community/ortho_4x12/jotix/keymap.c

#include QMK_KEYBOARD_H

extern keymap_config_t keymap_config;

enum layers {
    _QWERTY,
    _LOWER,
    _RAISE,
    _ADJUST,
};

#define LOWER   MO(_LOWER)
#define RAISE   MO(_RAISE)

#define FN_LAYER LAYOUT_ortho_4x12 (\
    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_CAPS, KC_F1,   KC_F2,   KC_F3,   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_TILD, _______, _______, _______, _______,\
    _______, _______, _______, _______, _______, _______, _______, _______, KC_HOME, KC_PGDN, KC_PGUP, KC_END\
),

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

/* qwerty
 * +--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+
 * |   esc  |    Q   |    W   |    E   |    R   |    T   |    Y   |    U   |    I   |    O   |    P   |  bksp  |
 * +--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+
 * |   tab  |    A   |    S   |    D   |    F   |    G   |    H   |    J   |    K   |    L   |    ;   |    '   |
 * +--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+
 * | lshift |    Z   |    X   |    C   |    V   |    B   |    N   |    M   |    ,   |    .   |    /   |  enter |
 * +--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+
 * |  lctrl |  lgui  |  lalt  |  ralt  |  lower |  space |  space |  raise |  left  |  down  |   up   |  right | 
 * +--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+--------+
 */
[_QWERTY] = LAYOUT_ortho_4x12 ( 
    KC_ESC,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC,
    KC_TAB,  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_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT,
    KC_LCTL, KC_LGUI, KC_LALT, KC_RALT, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
),

[_LOWER] = FN_LAYER

[_RAISE] = FN_LAYER

/* 
 * Adjust 
 */
[_ADJUST] = LAYOUT_ortho_4x12 (
    _______, RESET,   _______, _______, _______, _______, _______, _______, KC_PSCR, KC_SLCK, KC_PAUS, _______,
    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
    _______, _______, _______, _______, _______, BL_STEP, BL_BRTG, _______, _______, _______, _______, _______,
    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
),    
};

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

void matrix_init_user(void) {
}