UM0097 datasheet(42/229 Pages) STMICROELECTRONICS

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Peripheral firmware overview

UM0097

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RCCU_USBCLKConfig

Example:

This example illustrates how to configure the USB peripheral source clock as PLL2 output.

{

...

RCCU_USBCLKConfig (RCCU_PLL2_Output);

...

}

RCCU_USBClockSource

Example:

This example illustrates how to get the USB clock source:

{

RCCU_USB_Clocks Current_USBClock;

...

Current_USBClock = RCCU_USBClockSource ();

...

}

Function Name

RCCU_USBCLKConfig

Function Prototype

void RCCU_USBCLKConfig (USB_Clocks New_Clock);

Behavior Description

This routine is used to select the clock source of the USB peripheral.

Input Parameter

New_Clock: the USB clock source. Refer to USB clock source on

page 33 for more details on the allowed values of this parameter.

Output Parameter

None

Return Value

None

Required preconditions

None

Called Functions

None

Function Name

RCCU_USBClockSource

Function Prototype

USB_Clocks RCCU_USBClockSource (void);

Behavior Description

This routine gets the clock source of the USB peripheral.

Input Parameter

None

Output Parameter

None

Return Value

The USB clock source. Refer to USB clock source on page 33 for more

details on the allowed values of this parameter.

Required preconditions

None

Called Functions

None

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