UM0097 datasheet(37/229 Pages) STMICROELECTRONICS

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UM0097

Peripheral firmware overview

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RCCU_Div2Config

Example:

This example illustrates how to enable the clock division by two:

RCCU_Div2Config (ENABLE);

/* Sets the Div2 flag in the CLK_FLAG register. */

RCCU_Div2Status

Example:

This example illustrates how to enable the programmable clock divider if it is not enabled.

FlagStatus Current_Div2Flag;

if (Current_Div2Flag == RESET)

{

RCCU_Div2Config (ENABLE);

/*.....................User Code........................*/

}

Function Name

RCCU_Div2Config

Function Prototype

void RCCU_Div2Config(FunctionalState NewState);

Behavior Description

This routine is used to enable or disable the programmable clock

division of the CLOCK1 input clock signal by 2. It sets or clears the Div2

flag in the CLK_FLAG register

Input Parameter

NewState: specifies whether the programmable divider can divide the

CLOCK1 input clock signal by two or not

– ENABLE: enables the clock division by two of of CLK signal

– DISABLE: disables the clock division by two of of CLK signal

Output Parameter

None

Return Value

None

Required preconditions

None

Called Functions

None

Function Name

RCCU_Div2Status

Function Prototype

FlagStatus RCCU_Div2Status (void);

Behavior Description

This routine gets the current status of the programmable clock division

by two. It checks the status of the Div2 flag in the CLK_FLAG register

Input Parameter

None

Output Parameter

None

Return Value

The Div2 Flag status.

– SET: The division by 2 is enabled

– RESET: The division by 2 is disabled

Required preconditions

None

Called Functions

None

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