DetailsSTM32F767Zi KeilHSI =16MhzPLL=72 MhzUART1PLL source = HSIAPB2 = 72MhzBaudrate = 9600;/*void _PLL(){ //RCC->CR|=1<<24; RCC->PLLCFGR&=0; RCC->PLLCFGR|=(2<<28)|(6<<24)|(216<<6)|(1<<3)|(1<<17); FLASH->ACR&=0; FLASH->ACR|=1<<11|1<<9|1<<8|1<<1|1<<0...