TFTLCD显示实验的寄存器历程出现错误

TEST.axf: Error: L6218E: Undefined symbol USART_RX_BUF (referred from usmart.o).
TEST.axf: Error: L6218E: Undefined symbol USART_RX_STA (referred from usmart.o).
TEST.axf: Error: L6218E: Undefined symbol led_set (referred from usmart_config.o).
TEST.axf: Error: L6218E: Undefined symbol test_fun (referred from usmart_config.o).
TEST.axf: Not enough information to list image symbols.
TEST.axf: Finished: 1 information, 0 warning and 4 error messages.
把usmart的头文件加入产生的错误