-/* layer used currently */
-extern uint8_t current_layer;
-/* layer to return or start with */
-extern uint8_t default_layer;
-
-
+#ifdef USE_KEYMAP_V2
+/* translates key to keycode
+ * layer: 0-15 for base layers
+ * 16-31 for overlays
+ */
+uint8_t keymap_key_to_keycode(uint8_t layer, key_t key);
+/* translates Fn keycode to action */
+action_t keymap_fn_to_action(uint8_t keycode);
+#else
+#warning "You are using LEGACY KEYAMP. Consider using NEW KEYMAP."