qmk-firmware/keyboards/amjpad/amjpad.h

#pragma once

#include "quantum.h"

// readability
#define XXX KC_NO

/* AMJPAD matrix layout
   * ,-------------------.
   * | 00 | 01 | 02 | 03 |
   * |----|----|----|----|
   * | 10 | 11 | 12 | 13 |
   * |----|----|----|----|
   * | 20 | 21 | 22 |    |
   * |----|----|----| 23 |
   * | 30 | 31 | 32 |    |
   * |----|----|----|----|
   * | 40 | 41 | 42 |    |
   * |----|----|----| 43 |
   * |   50    | 52 |    |
   * `-------------------'
 */
// The first section contains all of the arguments
// The second converts the arguments into a two-dimensional array
#define LAYOUT_numpad_6x4( \
    k00, k01, k02, k03, \
    k10, k11, k12, k13, \
    k20, k21, k22, \
    k30, k31, k32, k23, \
    k40, k41, k42, \
       k50,   k52, k43  \
) { \
    { k00, k01, k02, k03 }, \
    { k10, k11, k12, k13 }, \
    { k20, k21, k22, k23 }, \
    { k30, k31, k32, XXX }, \
    { k40, k41, k42, k43 }, \
    { k50, XXX, k52, XXX } \
}

#define LAYOUT_ortho_6x4( \
    k00, k01, k02, k03, \
    k10, k11, k12, k13, \
    k20, k21, k22, k23, \
    k30, k31, k32, k33, \
    k40, k41, k42, k43, \
    k50, k51, k52, k53 \
) { \
    { k00, k01, k02, k03 }, \
    { k10, k11, k12, k13 }, \
    { k20, k21, k22, k23 }, \
    { k30, k31, k32, k33 }, \
    { k40, k41, k42, k43 }, \
    { k50, k51, k52, k53 } \
}

void matrix_init_user(void);
void matrix_scan_user(void);