QN9020编译提示L6218E错误,请问是什么问题
.\obj\demo.axf: Error: L6218E: Undefined symbol timer_init(QN_TIMER_TypeDef*, void(*)()) (referred from main.o)..\obj\demo.axf: Error: L6218E: Undefined symbol timer_config(QN_TIMER_TypeDef*, unsigned, unsigned) (referred from main.o).
.\obj\demo.axf: Error: L6218E: Undefined symbol __wr_reg_with_msk(unsigned, unsigned, unsigned) (referred from main.o).
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