/**OSC=8M*PLLCLK=48M*SYSCLK=48M*HCLK=48M*/voidRCC_Configuration(void){ErrorStatusHSEStartUpStatus;RC
voidRCC_Configuration(void){ErrorStatusHSEStartUpStatus;使能外部晶振RCC_HSEConfig(RCC_HSE_ON);等待外部晶振稳定HSES
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