请教香主:
FLASH_SetLatency(FLASH_Latency_1);
RCC_HCLKConfig(RCC_SYSCLK_Div1);
RCC_PCLK2Config(RCC_HCLK_Div1); //72MHZ
RCC_PCLK1Config(RCC_HCLK_Div2); //36MHZ
RCC_ADCCLKConfig(RCC_PCLK2_Div6);//AD时钟=72/6 =12MHZ
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
RCC_PLLCmd(ENABLE);
8MHz晶体,经以上配置后,APB1不是期望的36MHz,而是72MHz,应怎样修改,谢谢 |