单片机时钟配置：HSE改为HSI

崇山峻岭之间2026-05-16 9:11

单片机：STM32F407

开发板：DMF407电机开发板

平台：keil V5.31

HSE 为8MHZ

HSI为16MHZ

使用HSE的配置为

c 复制代码

sys_stm32_clock_init(336, 8, 2, 7); /* 使用HSE，设置时钟,168Mhz */

使用HSI的配置为

c 复制代码

sys_stm32_clock_init(336, 16, 2, 7); /* 使用HSI，设置时钟,168Mhz */

同时修改

c 复制代码

	#if 0
    rcc_osc_init_handle.OscillatorType = RCC_OSCILLATORTYPE_HSE;        /* 时钟源为HSE */
    rcc_osc_init_handle.HSEState = RCC_HSE_ON;                          /* 打开HSE */
    rcc_osc_init_handle.PLL.PLLState = RCC_PLL_ON;                      /* 打开PLL */
    rcc_osc_init_handle.PLL.PLLSource = RCC_PLLSOURCE_HSE;              /* PLL时钟源选择HSE */
    rcc_osc_init_handle.PLL.PLLN = plln;
    rcc_osc_init_handle.PLL.PLLM = pllm;
    rcc_osc_init_handle.PLL.PLLP = pllp;
    rcc_osc_init_handle.PLL.PLLQ = pllq;
	
	#else
    rcc_osc_init_handle.OscillatorType = RCC_OSCILLATORTYPE_HSI;        /* 时钟源为HSE */
    rcc_osc_init_handle.HSIState = RCC_HSI_ON;                          /* 打开HSE */
    rcc_osc_init_handle.PLL.PLLState = RCC_PLL_ON;                      /* 打开PLL */
    rcc_osc_init_handle.PLL.PLLSource = RCC_PLLSOURCE_HSI;              /* PLL时钟源选择HSE */
    rcc_osc_init_handle.PLL.PLLN = plln;
    rcc_osc_init_handle.PLL.PLLM = pllm;
    rcc_osc_init_handle.PLL.PLLP = pllp;
    rcc_osc_init_handle.PLL.PLLQ = pllq;
		
	#endif

运行结果：