qmk_firmware/data/templates/base/%(KEYBOARD)s.h

// Copyright %(YEAR)s %(YOUR_NAME)s (@%(USER_NAME)s)
// SPDX-License-Identifier: GPL-2.0-or-later

#pragma once

#include "quantum.h"

/* This is a shortcut to help you visually see your layout.
 *
 * The first section contains all of the arguments representing the physical
 * layout of the board and position of the keys.
 *
 * The second converts the arguments into a two-dimensional array which
 * represents the switch matrix.
 */
#define LAYOUT( \
    k00, k01, k02, \
      k10,  k12    \
) { \
    { k00, k01,   k02 }, \
    { k10, KC_NO, k12 }  \
}