qmk_firmware/keyboards/dztech/dz40rgb/keymaps/default/keymap.c

#include QMK_KEYBOARD_H
extern bool g_suspend_state;
#define _LAYER0 0
#define _LAYER1 1
#define _LAYER2 2
#define _LAYER3 3
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
		[_LAYER0] = LAYOUT( /* Base */
			    KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC,
			    KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,
			    KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT ,
				RGB_MOD, KC_LCTL, KC_LALT, KC_LGUI, MO(1),            KC_SPC,  MO(2),   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
			),
		[_LAYER1] = LAYOUT( /* FN */
			    KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR,    KC_ASTR,    KC_LPRN, KC_RPRN, KC_BSPC,
			    KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_UNDS,    KC_PLUS,    KC_LCBR, KC_RCBR, KC_PIPE,
			    _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  S(KC_NUHS), S(KC_NUBS), KC_HOME, KC_END,  _______,
			    _______, _______, _______, _______, _______,          _______, TO(3),      KC_MNXT,    KC_VOLD, KC_VOLU, KC_MPLY
			),
		[_LAYER2] = LAYOUT( /* FN2 */
			    KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSPC,
			    KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS,
			    _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_NUHS, KC_NUBS, KC_PGUP, KC_PGDN, _______,
			    RGB_TOG, RGB_MOD, BL_INC,  BL_DEC, _______,           _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY
		    ),
		[_LAYER3] = LAYOUT( /* FN3 */
			    TO(0), RESET,   DEBUG,   RGB_TOG, RGB_MOD, RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD,  RGB_VAI, RGB_VAD, KC_DEL ,
			    _______, _______, _______,  _______,   _______,  _______, _______,  _______, _______, _______, _______, _______,
			    _______, _______, _______,  _______,   _______,  _______, _______,  _______, _______, _______, _______, _______,
			    _______, _______, _______,  _______,   _______,           _______,  _______, _______, _______, _______,  _______
			),

};
void rgb_matrix_layer_helper (uint8_t red, uint8_t green, uint8_t blue, bool default_layer) {
  rgb_led led;
  for (int i = 0; i < DRIVER_LED_TOTAL; i++) {
    led = g_rgb_leds[i];
    if (led.matrix_co.raw < 0xFF) {
      if (led.modifier) {
          rgb_matrix_set_color( i, red, green, blue );
      }
    }
  }
}

void rgb_matrix_indicators_user(void) {
	  if (!g_suspend_state) {
	    switch (biton32(layer_state)) {
	      case _LAYER1:
		    rgb_matrix_layer_helper(0xFF, 0x00, 0x00, false); break;
	      case _LAYER2:
	        rgb_matrix_layer_helper(0x00, 0xFF, 0x00, false); break;
	      case _LAYER3:
	        rgb_matrix_layer_helper(0xFF, 0xFF, 0x00, false); break;
	    							  }
	                        }

}





void matrix_init_user(void) {
  //user initialization
}

void matrix_scan_user(void) {
  //user matrix
}

	bool process_record_user(uint16_t keycode, keyrecord_t *record) {
	  return true;
	}