void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; /** Configure the main internal regulator output voltage */ __HAL_RCC_PWR_CLK_ENABLE(); __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); /** Initializes the RCC Oscillators according to the specified parameters * in the RCC_OscInitTypeDef structure. */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLM = 8; RCC_OscInitStruct.PLL.PLLN = 336; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; RCC_OscInitStruct.PLL.PLLQ = 4; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { Error_Handler(); } /** Initializes the CPU, AHB and APB buses clocks */ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK) { Error_Handler(); } }逐句注释这段函数

好的，我来逐句注释这段函数：

void SystemClock_Config(void) {
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

    /** Configure the main internal regulator output voltage */
    __HAL_RCC_PWR_CLK_ENABLE(); // 使能电源时钟
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); // 配置主内部稳压器的输出电压

    /** Initializes the RCC Oscillators according to the specified parameters
    * in the RCC_OscInitTypeDef structure. */
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; // RCC振荡器类型为HSE
    RCC_OscInitStruct.HSEState = RCC_HSE_ON; // 使能HSE时钟源
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; // 使能PLL
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; // PLL时钟源为HSE
    RCC_OscInitStruct.PLL.PLLM = 8; // PLL输入时钟频率除以M (M=8)
    RCC_OscInitStruct.PLL.PLLN = 336; // PLL倍频系数N为336
    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; // PLL输出时钟频率除以P (P=2)
    RCC_OscInitStruct.PLL.PLLQ = 4; // PLL输出时钟频率除以Q (Q=4)
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) // 初始化RCC振荡器
    {
        Error_Handler(); // 如果初始化失败，则调用错误处理函数
    }

    /** Initializes the CPU, AHB and APB buses clocks */
    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK |
                                  RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2; // 配置系统时钟和总线时钟类型
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; // 系统时钟源为PLL
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; // AHB总线时钟为系统时钟
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4; // APB1总线时钟为系统时钟的1/4
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; // APB2总线时钟为系统时钟的1/2
    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK) // 初始化CPU、AHB和APB总线时钟
    {
        Error_Handler(); // 如果初始化失败，则调用错误处理函数
    }
}

这段代码主要是对 STM32 微控制器的时钟进行配置，包括配置内部稳压器输出电压、配置 RCC 振荡器、配置 PLL 和配置 CPU、AHB 和 APB 总线时钟。其中，PLL 是锁相环，可以通过调节 PLLM、PLLN、PLLP、PLLQ 等参数来调节系统时钟频率。