LL_RCC_GetAHBPrescaler() function

Returned value 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