stm32F407利用lwip_raw例程加入rtc无法编译通过

tudoubj

stm32F407骄阳板子，利用LWIP-raw例程后，加入bsp_rtc.h和bsp_rtc.c后，报错如下：..\Output\YH-F429.axf: Error: L6218E: Undefined symbol HAL_RTCEx_BKUPWrite (referred from bsp_rtc.o).
..\Output\YH-F429.axf: Error: L6218E: Undefined symbol HAL_RTC_Init (referred from bsp_rtc.o).
..\Output\YH-F429.axf: Error: L6218E: Undefined symbol HAL_RTC_SetDate (referred from bsp_rtc.o).
..\Output\YH-F429.axf: Error: L6218E: Undefined symbol HAL_RTC_SetTime (referred from bsp_rtc.o).
..\Output\YH-F429.axf: Error: L6218E: Undefined symbol HAL_RTC_WaitForSynchro (referred from bsp_rtc.o).
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qiuji

Memory#

...自己看看.c里面是不是有的模块没有引用 全局定义