编译故障

jiganghao · 发表于 2013-5-8 16:53:24

我在USMART调试组件实验的时候，按照教程做了，编译的时候，报一下故障，请问是什么原因？怎么解决？谢谢
..\OBJ\LCD.axf: Error: L6218E: Undefined symbol TIM_ClearITPendingBit (referred from usmart.o).
..\OBJ\LCD.axf: Error: L6218E: Undefined symbol TIM_Cmd (referred from usmart.o).
..\OBJ\LCD.axf: Error: L6218E: Undefined symbol TIM_GetITStatus (referred from usmart.o).
..\OBJ\LCD.axf: Error: L6218E: Undefined symbol TIM_ITConfig (referred from usmart.o).
..\OBJ\LCD.axf: Error: L6218E: Undefined symbol TIM_TimeBaseInit (referred from usmart.o).