TM_RCC_Functions

Library Functions. More...

Functions
void	TM_RCC_SetPLL (TM_RCC_PLL_t *PLL_Settings)
	Sets the main PLL settings for STM32F4xx device. More...
void	TM_RCC_GetPLL (TM_RCC_PLL_t *PLL_Settings)
	Gets current PLL settings from RCC registers. More...
uint8_t	TM_RCC_IsPLLReady (void)
	Checks if main PLL is ready. More...

Detailed Description

Library Functions.

Function Documentation

void TM_RCC_GetPLL

(

TM_RCC_PLL_t *

PLL_Settings

)

Gets current PLL settings from RCC registers.

Note

You can use this function to read current PLL settings before applying new settings

Parameters

*PLL_Settings

Pointer to TM_RCC_PLL_t structure where PLL settings will be stored

Return values

None

uint8_t TM_RCC_IsPLLReady

(

void

)

Checks if main PLL is ready.

Parameters

None

Return values

PLL	ready status: 0: PLL is not ready > 0: PLL is ready

void TM_RCC_SetPLL

(

TM_RCC_PLL_t *

PLL_Settings

)

Sets the main PLL settings for STM32F4xx device.

Note

PLL can only be configured when PLL is not used as system clock. For that purpose, this function does the following things:

• Enables HSI as system core clock
• Disables PLL
• Sets PLL parameters passed as parameters in function
• Enables PLL
• Waits will PLL is ready and locked
• Enables PLL as system core clock
• Updates system core clock variable

Parameters

*PLL_Settings

Pointer to TM_RCC_PLL_t structure with PLL settings. Use 0 for setting you don't want to change

Return values

None