UTILS Private functions

Collaboration diagram for UTILS Private functions:

Functions
static uint32_t	UTILS_GetPLLOutputFrequency (uint32_t PLL_InputFrequency, LL_UTILS_PLLInitTypeDef *UTILS_PLLInitStruct)
	Function to check that PLL can be modified.
static ErrorStatus	UTILS_EnablePLLAndSwitchSystem (uint32_t SYSCLK_Frequency, LL_UTILS_ClkInitTypeDef *UTILS_ClkInitStruct)
	Function to enable PLL and switch system clock to PLL.
static ErrorStatus	UTILS_PLL_IsBusy (void)
	Function to check that PLL can be modified.

Detailed Description

Function Documentation

UTILS_EnablePLLAndSwitchSystem()

ErrorStatus UTILS_EnablePLLAndSwitchSystem ( uint32_t SYSCLK_Frequency, LL_UTILS_ClkInitTypeDef * UTILS_ClkInitStruct )

static

Function to enable PLL and switch system clock to PLL.

Parameters

SYSCLK_Frequency	SYSCLK frequency
UTILS_ClkInitStruct	pointer to a LL_UTILS_ClkInitTypeDef structure that contains the configuration information for the BUS prescalers.

Return values

An	ErrorStatus enumeration value: SUCCESS: No problem to switch system to PLL ERROR: Problem to switch system to PLL

Definition at line 681 of file stm32f4xx_ll_utils.c.

References LL_UTILS_ClkInitTypeDef::AHBCLKDivider, LL_UTILS_ClkInitTypeDef::APB1CLKDivider, LL_UTILS_ClkInitTypeDef::APB2CLKDivider, assert_param, IS_LL_UTILS_APB1_DIV, IS_LL_UTILS_APB2_DIV, IS_LL_UTILS_SYSCLK_DIV, LL_SetFlashLatency(), and LL_SetSystemCoreClock().

Referenced by LL_PLL_ConfigSystemClock_HSE(), and LL_PLL_ConfigSystemClock_HSI().

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UTILS_GetPLLOutputFrequency()

uint32_t UTILS_GetPLLOutputFrequency ( uint32_t PLL_InputFrequency, LL_UTILS_PLLInitTypeDef * UTILS_PLLInitStruct )

static

Function to check that PLL can be modified.

Parameters

PLL_InputFrequency	PLL input frequency (in Hz)
UTILS_PLLInitStruct	pointer to a LL_UTILS_PLLInitTypeDef structure that contains the configuration information for the PLL.

Return values

PLL	output frequency (in Hz)

Definition at line 611 of file stm32f4xx_ll_utils.c.

References assert_param, IS_LL_UTILS_PLL_FREQUENCY, IS_LL_UTILS_PLLM_VALUE, IS_LL_UTILS_PLLN_VALUE, IS_LL_UTILS_PLLP_VALUE, IS_LL_UTILS_PLLVCO_INPUT, IS_LL_UTILS_PLLVCO_OUTPUT, LL_UTILS_PLLInitTypeDef::PLLM, LL_UTILS_PLLInitTypeDef::PLLN, and LL_UTILS_PLLInitTypeDef::PLLP.

Referenced by LL_PLL_ConfigSystemClock_HSE(), and LL_PLL_ConfigSystemClock_HSI().

UTILS_PLL_IsBusy()

ErrorStatus UTILS_PLL_IsBusy ( void )

static

Function to check that PLL can be modified.

Return values

An	ErrorStatus enumeration value: SUCCESS: PLL modification can be done ERROR: PLL is busy

Definition at line 642 of file stm32f4xx_ll_utils.c.

Referenced by LL_PLL_ConfigSystemClock_HSE(), and LL_PLL_ConfigSystemClock_HSI().