__LL_RCC_CALC_HCLK_FREQ macro

Helper macro to calculate the HCLK frequency

Syntax

#define __LL_RCC_CALC_HCLK_FREQ(__SYSCLKFREQ__, __AHBPRESCALER__) ((__SYSCLKFREQ__) >> AHBPrescTable[((__AHBPRESCALER__) & RCC_CFGR_HPRE) >> RCC_CFGR_HPRE_Pos])

SYSCLK frequency (based on HSE/HSI/PLLCLK)

This parameter can be one of the following values: @arg LL_RCC_SYSCLK_DIV_1 @arg LL_RCC_SYSCLK_DIV_2 @arg LL_RCC_SYSCLK_DIV_4 @arg LL_RCC_SYSCLK_DIV_8 @arg LL_RCC_SYSCLK_DIV_16 @arg LL_RCC_SYSCLK_DIV_64 @arg LL_RCC_SYSCLK_DIV_128 @arg LL_RCC_SYSCLK_DIV_256 @arg LL_RCC_SYSCLK_DIV_512

HCLK clock frequency (in Hz)

Location	Text
stm32f4xx_ll_rcc.h:2869	#define __LL_RCC_CALC_HCLK_FREQ(__SYSCLKFREQ__, __AHBPRESCALER__) ((__SYSCLKFREQ__) >> AHBPrescTable[((__AHBPRESCALER__) & RCC_CFGR_HPRE) >> RCC_CFGR_HPRE_Pos])
stm32f4xx_ll_rcc.c:1159	return __LL_RCC_CALC_HCLK_FREQ(SYSCLK_Frequency, LL_RCC_GetAHBPrescaler());
stm32f4xx_ll_utils.c:691	hclk_frequency = __LL_RCC_CALC_HCLK_FREQ(SYSCLK_Frequency, UTILS_ClkInitStruct->AHBCLKDivider);