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linking...
..\ObjFlash\STM32-FD-ucos.axf: Error: L6218E: Undefined symbol EXTI_ClearITPendingBit (referred from
stm32f10x_it.o).
..\ObjFlash\STM32-FD-ucos.axf: Error: L6218E: Undefined symbol EXTI_GetITStatus (referred from
stm32f10x_it.o).
..\ObjFlash\STM32-FD-ucos.axf: Error: L6218E: Undefined symbol EXTI_Init (referred from bsp.o).