AWU_Exported_Functions

Functions
void	AWU_Cmd (FunctionalState NewState)
	Enable or disable the AWU peripheral.
void	AWU_DeInit (void)
	Deinitializes the AWU peripheral registers to their default reset values.
FlagStatus	AWU_GetFlagStatus (void)
	Returns status of the AWU peripheral flag.
void	AWU_IdleModeEnable (void)
	Configures AWU in Idle mode to reduce power consumption.
void	AWU_Init (AWU_Timebase_TypeDef AWU_TimeBase)
	Initializes the AWU peripheral according to the specified parameters.
void	AWU_LSICalibrationConfig (uint32_t LSIFreqHz)
	Update APR register with the measured LSI frequency.

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Function Documentation

void AWU_Cmd

(

FunctionalState

NewState

)

Enable or disable the AWU peripheral.

Parameters:

NewState

Indicates the new state of the AWU peripheral.

Return values:

None

Required preconditions:

Initialisation of AWU and LS RC calibration must be done before.

Definition at line 112 of file stm8s_awu.c.

References AWU, AWU_CSR_AWUEN, and DISABLE.

void AWU_DeInit

(

void

)

Deinitializes the AWU peripheral registers to their default reset values.

Parameters:

None

Return values:

None

Definition at line 73 of file stm8s_awu.c.

References AWU, AWU_APR_RESET_VALUE, AWU_CSR_RESET_VALUE, and AWU_TBR_RESET_VALUE.

FlagStatus AWU_GetFlagStatus

(

void

)

Returns status of the AWU peripheral flag.

Parameters:

None

Return values:

FlagStatus

: Status of the AWU flag. This parameter can be any of the FlagStatus enumeration.

Definition at line 183 of file stm8s_awu.c.

References AWU, AWU_CSR_AWUF, RESET, and SET.

void AWU_IdleModeEnable

(

void

)

Configures AWU in Idle mode to reduce power consumption.

Parameters:

None

Return values:

None

Definition at line 168 of file stm8s_awu.c.

References AWU, AWU_CSR_AWUEN, and AWU_TBR_AWUTB.

void AWU_Init

(

AWU_Timebase_TypeDef

AWU_TimeBase

)

Initializes the AWU peripheral according to the specified parameters.

Parameters:

AWU_TimeBase

: Time base selection (interval between AWU interrupts). can be one of the values of AWU_Timebase_TypeDef.

Return values:

None

Required preconditions:

The LS RC calibration must be performed before calling this function.

Definition at line 88 of file stm8s_awu.c.

References APR_Array, AWU, AWU_APR_APR, AWU_CSR_AWUEN, AWU_TBR_AWUTB, IS_AWU_TIMEBASE_OK, and TBR_Array.

void AWU_LSICalibrationConfig

(

uint32_t

LSIFreqHz

)

Update APR register with the measured LSI frequency.

Note on the APR calculation:

A is the integer part of lsifreqkhz/4 and x the decimal part. x <= A/(1+2A) is equivalent to A >= x(1+2A) and also to 4A >= 4x(1+2A) [F1] but we know that A + x = lsifreqkhz/4 ==> 4x = lsifreqkhz-4A so [F1] can be written : 4A >= (lsifreqkhz-4A)(1+2A)

Parameters:

LSIFreqHz

Low Speed RC frequency measured by timer (in Hz).

Return values:

None

Required preconditions:

• AWU must be disabled to avoid unwanted interrupts.

Definition at line 139 of file stm8s_awu.c.

References AWU, and IS_LSI_FREQUENCY_OK.