问答-
GD32外接16Mhz晶振，计算后倍频是小数，如何解决？
#if(defined(GD32F10X_MD)||defined(GD32F10X_HD)||defined(GD32F10X_XD))/*selectHXTAL/2asclocksource*/RCU_CFG0&=~(RCU_CFG0_PLLSEL|RCU_CFG0_PREDV0);RCU_CFG0|=(RCU_PLLSRC_HXTAL|RCU_CFG0_PREDV0);/*CK_PLL=(CK_HXTAL/2)*27=108MHz*/RCU_CFG0&=~(RCU_CFG0_PLLMF|RCU_CFG0_PLLMF_4);//RCU_CFG0|=RCU_PLL_MUL27;//这里CK_HXTAL为16MHz,所以计算倍频得13.5，那么应该选RCU_PLL_MUL13还是RCU_PLL_MUL14呢？RCU_CFG0|=RCU_PLL_MUL13;//？？RCU_PLL_MUL14？？
2021-10-05 1
