.STM32_DEMO.axf: Error: L6218E: Undefined symbol EXTI_ClearITPendingBit (referred from stm32f10x_it.o).
.STM32_DEMO.axf: Error: L6218E: Undefined symbol EXTI_GetITStatus (referred from stm32f10x_it.o).
.STM32_DEMO.axf: Error: L6218E: Undefined symbol EXTI_Init (referred from main.o).
Not enough information to list image symbols.
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