..OBJADC.axf: Error: L6218E: Undefined symbol EXTI_ClearITPendingBit (referred from exti.o).
..OBJADC.axf: Error: L6218E: Undefined symbol EXTI_GetITStatus (referred from exti.o).
..OBJADC.axf: Error: L6218E: Undefined symbol EXTI_Init (referred from exti.o).
..OBJADC.axf: Error: L6218E: Undefined symbol TIM_ClearITPendingBit (referred from timer.o).
..OBJADC.axf: Error: L6218E: Undefined symbol TIM_Cmd (referred from timer.o).
..OBJADC.axf: Error: L6218E: Undefined symbol TIM_GetITStatus (referred from timer.o).
..OBJADC.axf: Error: L6218E: Undefined symbol TIM_ITConfig (referred from timer.o).
..OBJADC.axf: Error: L6218E: Undefined symbol TIM_TimeBaseInit (referred from timer.o).
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就行
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