$(TMK_DIR)/protocol/serial_uart.c
endif
+ifeq ($(strip $(BLUETOOTH)), RN42)
+ LUFA_SRC += $(LUFA_DIR)/bluetooth.c \
+ $(TMK_DIR)/protocol/serial_uart.c
+endif
+
ifeq ($(strip $(VIRTSER_ENABLE)), yes)
LUFA_SRC += $(LUFA_ROOT_PATH)/Drivers/USB/Class/Device/CDCClassDevice.c
endif