stm32f103c8t6时钟设置如何修改

1万 · 2017-7-22 10:16

我用stm32f103c8t6写程序，原来晶振是12M,
Stm32_Clock_Init(1);       //12MHz
void Stm32_Clock_Init(uint8_t PLL)
{
uint8_t temp;

RCC_DeInit();
RCC->CR|=0x00010000;
while(!(RCC->CR & 0X00020000));
RCC->CFGR=0X00000000;
FLASH->ACR|=0x30;
RCC->CFGR|=0x00000001;

temp = 0;
while(temp!=0x01)
{
         temp=RCC->CFGR>>2;
         temp&=0x03;
}
RCC->APB2ENR|=1<<0;                //SYSCFG

}

现在晶振换成了8M。请问如何修改设置。谢谢