UM0097 datasheet(43/229 Pages) STMICROELECTRONICS

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UM0097

Peripheral firmware overview

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RCCU_FrequencyValue

Example:

This example illustrates how get the MCLK clock frequency value.

{

u32 MCLK_Freq;

...

MCLK_Freq = RCCU_FrequencyValue (RCCU_MCLK);

...

}

RCCU_ITConfig

Example:

This example illustrates how to configure the PLL1 lock interrupt.

{

...

RCCU_ITConfig (RCCU_PLL1_LOCK_IT, ENABLE);

...

}

Function Name

RCCU_FrequencyValue

Function Prototype

u32 RCCU_FrequencyValue(RCCU_Clocks Internal_Clk);

Behavior Description

This routine computes any internal RCCU clock frequency value passed

in parameters.

Input Parameter

Internal_Clk: the RCCU internal clock to compute the frequency.

Refer to RCCU internal clocks on page 33 for more details on the

allowed values of this parameter.

Output Parameter

None

Return Value

The frequency value of the specified clock in Hz of the internal clock

passed in parameter.

Required preconditions

None

Called Functions

None

Function Name

RCCU_ITConfig

Function Prototype

void RCCU_ITConfig (RCCU_Interrupts RCCU_IT,

FunctionalState NewState);

Behavior Description

This routine configures the specified RCCU interrupts.

Input Parameter 1

RCCU_IT: specifies the RCCU interrupt to configure. Refer to RCCU

interrupts on page 34 for more details on the allowed values of this

parameter.

Input Parameter 2

NewState: Indicates the new status of the RCCU interrupt.

– ENABLE: to enable the specified interrupt

– DISABLE: to disable the specified interrupt

Output Parameter

None

Return Value

None

Required preconditions

None

Called Functions

None

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