qmk_firmware/keyboards/handwired/ck4x4/ck4x4.h

#pragma once

#include "quantum.h"

#define LAYOUT( \
  k00, k01, k02, k03, \
  k10, k11, k12, k13, \
  k20, k21, k22, k23, \
  k30, k31, k32, k33 \
) {\
{ k00, k01, k02, k03 }, \
{ k10, k11, k12, k13 }, \
{ k20, k21, k22, k23 }, \
{ k30, k31, k32, k33 }, \
}