UM0097 datasheet(45/229 Pages) STMICROELECTRONICS

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UM0097

Peripheral firmware overview

45/229

RCCU_ResetSource

Example:

This example illustrates how to define the system reset source.

{

RCCU_ResetSources ResetSource;

ResetSource=RCCU_ResetSource();

switch (ResetSource)

{

case RCCU_RTCAlarmReset: GPIO_BitWrite(GPIO0,0,1);break;

case RCCU_WKPReset: GPIO_BitWrite(GPIO0,1,1);break;

default

GPIO_BitWrite(GPIO0,3,1);break;

}

RCCU_PLL1FreeRunningModeConfig

Example:

This example shows how to clock the system with the PLL1 configured in free running

mode.

{

/*Configure the PLL in free running mode at 125kHz */

RCCU_PLL1FreeRunningModeConfig(RCCU_PLL1FreeRunning125);

/* Set the RCLK to the PLL1 output */

RCCU_RCLKSourceConfig(RCCU_PLL1_Output);

}

Function Name

RCCU_ResetSource

Function Prototype

RCCU_ResetSources RCCU_ResetSource (void);

Behavior Description

This routine is used to return the system reset source.

Input Parameter

None

Output Parameter

None

Return Value

The reset source

Required preconditions

None

Called Functions

None

Function Name

RCCU_PLL1FreeRunningModeConfig

Function Prototype

RCCU_PLL1FreeRunningModeConfig(RCCU_PLL1FreeRunningM

odes NewPll1FreeRunningMode);

Behavior Description

This routine is used to configure the PLL1 in free running mode

Input Parameter

RCCU_PLL1FreeRunningModes: PLL1 in free running mode.

Refer to PLL1 free running modes on page 35

Output Parameter

None

Return Value

None

Required preconditions

None

Called Functions

None

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