用固件库的话,在工程里搜索下面几个宏就知道了:
* - RCC_FLAG_PINRST: Pin reset
* - RCC_FLAG_PORRST: POR/PDR reset
* - RCC_FLAG_SFTRST: Software reset
* - RCC_FLAG_IWDGRST: Independent Watchdog reset
* - RCC_FLAG_WWDGRST: Window Watchdog reset
* - RCC_FLAG_LPWRRST: Low Power reset
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