qmk_firmware_custom/keyboards/helix/rev2/rev2.h

#ifndef REV2_H
#define REV2_CONFIG_H

#include "../helix.h"

//void promicro_bootloader_jmp(bool program);
#include "quantum.h"

#ifdef RGBLIGHT_ENABLE
//rgb led driver
#include "ws2812.h"
#endif

#ifdef USE_I2C
#include <stddef.h>
#ifdef __AVR__
	#include <avr/io.h>
	#include <avr/interrupt.h>
#endif
#endif

//void promicro_bootloader_jmp(bool program);


#if HELIX_ROWS == 4
#ifndef FLIP_HALF
// Standard Keymap
// (TRRS jack on the left half is to the right, TRRS jack on the right half is to the left)
#define LAYOUT( \
	L00, L01, L02, L03, L04, L05,           R00, R01, R02, R03, R04, R05, \
	L10, L11, L12, L13, L14, L15,           R10, R11, R12, R13, R14, R15, \
	L20, L21, L22, L23, L24, L25,           R20, R21, R22, R23, R24, R25, \
	L30, L31, L32, L33, L34, L35, L36, R36, R30, R31, R32, R33, R34, R35  \
	) \
	{ \
		{ L00, L01, L02, L03, L04, L05, KC_NO }, \
		{ L10, L11, L12, L13, L14, L15, KC_NO }, \
		{ L20, L21, L22, L23, L24, L25, KC_NO }, \
		{ L30, L31, L32, L33, L34, L35, L36 }, \
		{ R05, R04, R03, R02, R01, R00, KC_NO }, \
		{ R15, R14, R13, R12, R11, R10, KC_NO }, \
		{ R25, R24, R23, R22, R21, R20, KC_NO }, \
		{ R35, R34, R33, R32, R31, R30, R36 }, \
	}
#else
// Keymap with right side flipped
// (TRRS jack on both halves are to the right)
#define LAYOUT( \
	L00, L01, L02, L03, L04, L05,           R00, R01, R02, R03, R04, R05, \
	L10, L11, L12, L13, L14, L15,           R10, R11, R12, R13, R14, R15, \
	L20, L21, L22, L23, L24, L25,           R20, R21, R22, R23, R24, R25, \
	L30, L31, L32, L33, L34, L35, L36, R36, R30, R31, R32, R33, R34, R35  \
	) \
	{ \
		{ L00, L01, L02, L03, L04, L05, KC_NO }, \
		{ L10, L11, L12, L13, L14, L15, KC_NO }, \
		{ L20, L21, L22, L23, L24, L25, KC_NO }, \
		{ L30, L31, L32, L33, L34, L35, L36 }, \
		{ KC_NO, R00, R01, R02, R03, R04, R05 }, \
		{ KC_NO, R10, R11, R12, R13, R14, R15 }, \
		{ KC_NO, R20, R21, R22, R23, R24, R25 }, \
		{ R36, R30, R31, R32, R33, R34, R35 }, \
	}
#endif
#elif HELIX_ROWS == 5
  #ifndef FLIP_HALF
  // Standard Keymap
  // (TRRS jack on the left half is to the right, TRRS jack on the right half is to the left)
  #define LAYOUT( \
    L00, L01, L02, L03, L04, L05,           R00, R01, R02, R03, R04, R05, \
    L10, L11, L12, L13, L14, L15,           R10, R11, R12, R13, R14, R15, \
    L20, L21, L22, L23, L24, L25,           R20, R21, R22, R23, R24, R25, \
    L30, L31, L32, L33, L34, L35, L36, R36, R30, R31, R32, R33, R34, R35, \
    L40, L41, L42, L43, L44, L45, L46, R46, R40, R41, R42, R43, R44, R45  \
    ) \
    { \
      { L00, L01, L02, L03, L04, L05, KC_NO }, \
      { L10, L11, L12, L13, L14, L15, KC_NO }, \
      { L20, L21, L22, L23, L24, L25, KC_NO }, \
      { L30, L31, L32, L33, L34, L35, L36 }, \
      { L40, L41, L42, L43, L44, L45, L46 }, \
      { R05, R04, R03, R02, R01, R00, KC_NO }, \
      { R15, R14, R13, R12, R11, R10, KC_NO }, \
      { R25, R24, R23, R22, R21, R20, KC_NO }, \
      { R35, R34, R33, R32, R31, R30, R36 }, \
      { R45, R44, R43, R42, R41, R40, R46 } \
    }
  #else
  // Keymap with right side flipped
  // (TRRS jack on both halves are to the right)
  #define LAYOUT( \
		L00, L01, L02, L03, L04, L05,           R00, R01, R02, R03, R04, R05, \
    L10, L11, L12, L13, L14, L15,           R10, R11, R12, R13, R14, R15, \
    L20, L21, L22, L23, L24, L25,           R20, R21, R22, R23, R24, R25, \
    L30, L31, L32, L33, L34, L35, L36, R36, R30, R31, R32, R33, R34, R35, \
    L40, L41, L42, L43, L44, L45, L46, R46, R40, R41, R42, R43, R44, R45  \
    ) \
    { \
			{ L00, L01, L02, L03, L04, L05, KC_NO }, \
      { L10, L11, L12, L13, L14, L15, KC_NO }, \
      { L20, L21, L22, L23, L24, L25, KC_NO }, \
      { L30, L31, L32, L33, L34, L35, L36 }, \
      { L40, L41, L42, L43, L44, L45, L46 }, \
      { KC_NO, R00, R01, R02, R03, R04, R05 }, \
      { KC_NO, R10, R11, R12, R13, R14, R15 }, \
      { KC_NO, R20, R21, R22, R23, R24, R25 }, \
      { R36, R30, R31, R32, R33, R34, R35 }, \
      { R46, R40, R41, R42, R43, R44, R45 } \
    }
  #endif
#else
  #error "expected HELIX_ROWS 4 or 5"
#endif

#endif