fiddle around

Header file:
/* XD60 Keymap Definition Macro */
#define LAYOUT_all( \
      K00,  K01,  K02,  K03,  K04,  K05,  K06,  K07,  K08,  K09,  K0A,  K0B,  K0C,  K0D,  K49, \
      K10,  K11,  K12,  K13,  K14,  K15,  K16,  K17,  K18,  K19,  K1A,  K1B,  K1C,  K1D,       \
      K20,  K21,  K22,  K23,  K24,  K25,  K26,  K27,  K28,  K29,  K2A,  K2B,  K2C,  K2D,       \
      K30,  K31,  K32,  K33,  K34,  K35,  K36,  K37,  K38,  K39,  K3A,  K3B,  K47,  K3D,  K3C, \
      K40,  K41,  K42,              K45,                          K4A,  K4B,  K48,  K4C,  K4D  \
) { \
    { K00,  K01,  K02,  K03,   K04,   K05,  K06,   K07,  K08,  K09,  K0A,  K0B,  K0C,  K0D }, \
    { K10,  K11,  K12,  K13,   K14,   K15,  K16,   K17,  K18,  K19,  K1A,  K1B,  K1C,  K1D }, \
    { K20,  K21,  K22,  K23,   K24,   K25,  K26,   K27,  K28,  K29,  K2A,  K2B,  K2C,  K2D }, \
    { K30,  K31,  K32,  K33,   K34,   K35,  K36,   K37,  K38,  K39,  K3A,  K3B,  K3C,  K3D }, \
    { K40,  K41,  K42,  KC_NO, KC_NO, K45,  KC_NO, K47,  K48,  K49,  K4A,  K4B,  K4C,  K4D }  \
}

Keymaps File:
#include QMK_KEYBOARD_H

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

  // 0: Base Layer
  LAYOUT_all(
      KC_ESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS,  KC_EQL,   KC_BSPC, KC_BSPC, \
      KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC,  KC_RBRC,           KC_ENT, \
      KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,  KC_NUHS,           KC_ENT, \
      KC_LSFT,          KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH,  KC_RSFT,  KC_UP,   KC_DEL, \
      KC_LCTL, KC_LGUI, KC_LALT,                   KC_SPC,                             KC_RALT, KC_APP,  KC_NUBS,  KC_LEFT,  KC_DOWN, KC_RGHT),

  // 1: Function Layer
  LAYOUT_all(
      KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS,  KC_TRNS, KC_TRNS, \
	  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS,            KC_TRNS, \
	  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS,            KC_TRNS, \
      KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS,  KC_TRNS, KC_TRNS, \
	  KC_TRNS, KC_TRNS, KC_TRNS,                   KC_TRNS,                             KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS,  KC_TRNS, KC_TRNS),

};

// Loop
void matrix_scan_user(void) {
  // Empty
};