.\output\Project.axf: Error: L6218E: Undefined symbol __SEV (referred from gd32f10x_pmu.o).
.\output\Project.axf: Error: L6218E: Undefined symbol __WFE (referred from gd32f10x_pmu.o).
.\output\Project.axf: Error: L6218E: Undefined symbol __WFI (referred from gd32f10x_pmu.o).
请问这是什么问题?
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