CR_PLLON_BB那个后面的地址是什么意思?是怎么把值写到CR中去的
void RCC_PLLCmd(FunctionalState NewState){
*(vu32 *) CR_PLLON_BB = (u32)NewState;
}
/* Alias word address of PLLON bit */
#define PLLON_BitNumber 0x18
#define CR_PLLON_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (PLLON_BitNumber * 4))
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