Trigger Configuration

Functions
__STATIC_INLINE void	LL_LPTIM_EnableTimeout (LPTIM_TypeDef *LPTIMx)
	Enable the timeout function. More...
__STATIC_INLINE void	LL_LPTIM_DisableTimeout (LPTIM_TypeDef *LPTIMx)
	Disable the timeout function. More...
__STATIC_INLINE uint32_t	LL_LPTIM_IsEnabledTimeout (LPTIM_TypeDef *LPTIMx)
	Indicate whether the timeout function is enabled. CFGR TIMOUT LL_LPTIM_IsEnabledTimeout. More...
__STATIC_INLINE void	LL_LPTIM_TrigSw (LPTIM_TypeDef *LPTIMx)
	Start the LPTIM counter. More...
__STATIC_INLINE void	LL_LPTIM_ConfigTrigger (LPTIM_TypeDef *LPTIMx, uint32_t Source, uint32_t Filter, uint32_t Polarity)
	Configure the external trigger used as a trigger event for the LPTIM. More...
__STATIC_INLINE uint32_t	LL_LPTIM_GetTriggerSource (LPTIM_TypeDef *LPTIMx)
	Get actual external trigger source. CFGR TRIGSEL LL_LPTIM_GetTriggerSource. More...
__STATIC_INLINE uint32_t	LL_LPTIM_GetTriggerFilter (LPTIM_TypeDef *LPTIMx)
	Get actual external trigger filter. CFGR TRGFLT LL_LPTIM_GetTriggerFilter. More...
__STATIC_INLINE uint32_t	LL_LPTIM_GetTriggerPolarity (LPTIM_TypeDef *LPTIMx)
	Get actual external trigger polarity. CFGR TRIGEN LL_LPTIM_GetTriggerPolarity. More...

Detailed Description

Function Documentation

LL_LPTIM_ConfigTrigger()

__STATIC_INLINE void LL_LPTIM_ConfigTrigger	(	LPTIM_TypeDef *	LPTIMx,
		uint32_t	Source,
		uint32_t	Filter,
		uint32_t	Polarity
	)

Configure the external trigger used as a trigger event for the LPTIM.

Note

This function must be called when the LPTIM instance is disabled.

An internal clock source must be present when a digital filter is required for the trigger. CFGR TRIGSEL LL_LPTIM_ConfigTrigger
CFGR TRGFLT LL_LPTIM_ConfigTrigger
CFGR TRIGEN LL_LPTIM_ConfigTrigger

Parameters

LPTIMx	Low-Power Timer instance
Source	This parameter can be one of the following values: LL_LPTIM_TRIG_SOURCE_GPIO LL_LPTIM_TRIG_SOURCE_RTCALARMA LL_LPTIM_TRIG_SOURCE_RTCALARMB LL_LPTIM_TRIG_SOURCE_RTCTAMP1 (*) LL_LPTIM_TRIG_SOURCE_RTCTAMP2 LL_LPTIM_TRIG_SOURCE_RTCTAMP3 (*) LL_LPTIM_TRIG_SOURCE_COMP1 LL_LPTIM_TRIG_SOURCE_COMP2
Filter	This parameter can be one of the following values: LL_LPTIM_TRIG_FILTER_NONE LL_LPTIM_TRIG_FILTER_2 LL_LPTIM_TRIG_FILTER_4 LL_LPTIM_TRIG_FILTER_8
Polarity	This parameter can be one of the following values: LL_LPTIM_TRIG_POLARITY_RISING LL_LPTIM_TRIG_POLARITY_FALLING LL_LPTIM_TRIG_POLARITY_RISING_FALLING

Return values

None

Definition at line 848 of file stm32l4xx_ll_lptim.h.

{
  MODIFY_REG(LPTIMx->CFGR, LPTIM_CFGR_TRIGSEL | LPTIM_CFGR_TRGFLT | LPTIM_CFGR_TRIGEN, Source | Filter | Polarity);
}

LL_LPTIM_DisableTimeout()

__STATIC_INLINE void LL_LPTIM_DisableTimeout

(

LPTIM_TypeDef *

LPTIMx

)

Disable the timeout function.

Note

This function must be called when the LPTIM instance is disabled.

A trigger event arriving when the timer is already started will be ignored. CFGR TIMOUT LL_LPTIM_DisableTimeout

Parameters

LPTIMx

Low-Power Timer instance

Return values

None

Definition at line 791 of file stm32l4xx_ll_lptim.h.

{
  CLEAR_BIT(LPTIMx->CFGR, LPTIM_CFGR_TIMOUT);
}

LL_LPTIM_EnableTimeout()

__STATIC_INLINE void LL_LPTIM_EnableTimeout

(

LPTIM_TypeDef *

LPTIMx

)

Enable the timeout function.

Note

This function must be called when the LPTIM instance is disabled.

The first trigger event will start the timer, any successive trigger event will reset the counter and the timer will restart.

The timeout value corresponds to the compare value; if no trigger occurs within the expected time frame, the MCU is waked-up by the compare match event. CFGR TIMOUT LL_LPTIM_EnableTimeout

Parameters

LPTIMx

Low-Power Timer instance

Return values

None

Definition at line 777 of file stm32l4xx_ll_lptim.h.

{
  SET_BIT(LPTIMx->CFGR, LPTIM_CFGR_TIMOUT);
}

LL_LPTIM_GetTriggerFilter()

__STATIC_INLINE uint32_t LL_LPTIM_GetTriggerFilter

(

LPTIM_TypeDef *

LPTIMx

)

Get actual external trigger filter. CFGR TRGFLT LL_LPTIM_GetTriggerFilter.

Parameters

LPTIMx

Low-Power Timer instance

Return values

Returned

value can be one of the following values: LL_LPTIM_TRIG_FILTER_NONE LL_LPTIM_TRIG_FILTER_2 LL_LPTIM_TRIG_FILTER_4 LL_LPTIM_TRIG_FILTER_8

Definition at line 882 of file stm32l4xx_ll_lptim.h.

{
  return (uint32_t)(READ_BIT(LPTIMx->CFGR, LPTIM_CFGR_TRGFLT));
}

LL_LPTIM_GetTriggerPolarity()

__STATIC_INLINE uint32_t LL_LPTIM_GetTriggerPolarity

(

LPTIM_TypeDef *

LPTIMx

)

Get actual external trigger polarity. CFGR TRIGEN LL_LPTIM_GetTriggerPolarity.

Parameters

LPTIMx

Low-Power Timer instance

Return values

Returned

value can be one of the following values: LL_LPTIM_TRIG_POLARITY_RISING LL_LPTIM_TRIG_POLARITY_FALLING LL_LPTIM_TRIG_POLARITY_RISING_FALLING

Definition at line 896 of file stm32l4xx_ll_lptim.h.

{
  return (uint32_t)(READ_BIT(LPTIMx->CFGR, LPTIM_CFGR_TRIGEN));
}

LL_LPTIM_GetTriggerSource()

__STATIC_INLINE uint32_t LL_LPTIM_GetTriggerSource

(

LPTIM_TypeDef *

LPTIMx

)

Get actual external trigger source. CFGR TRIGSEL LL_LPTIM_GetTriggerSource.

Parameters

LPTIMx

Low-Power Timer instance

Return values

Returned

value can be one of the following values: LL_LPTIM_TRIG_SOURCE_GPIO LL_LPTIM_TRIG_SOURCE_RTCALARMA LL_LPTIM_TRIG_SOURCE_RTCALARMB LL_LPTIM_TRIG_SOURCE_RTCTAMP1 (*) LL_LPTIM_TRIG_SOURCE_RTCTAMP2 LL_LPTIM_TRIG_SOURCE_RTCTAMP3 (*) LL_LPTIM_TRIG_SOURCE_COMP1 LL_LPTIM_TRIG_SOURCE_COMP2

Definition at line 867 of file stm32l4xx_ll_lptim.h.

{
  return (uint32_t)(READ_BIT(LPTIMx->CFGR, LPTIM_CFGR_TRIGSEL));
}

LL_LPTIM_IsEnabledTimeout()

__STATIC_INLINE uint32_t LL_LPTIM_IsEnabledTimeout

(

LPTIM_TypeDef *

LPTIMx

)

Indicate whether the timeout function is enabled. CFGR TIMOUT LL_LPTIM_IsEnabledTimeout.

Parameters

LPTIMx

Low-Power Timer instance

Return values

State

of bit (1 or 0).

Definition at line 802 of file stm32l4xx_ll_lptim.h.

{
  return (((READ_BIT(LPTIMx->CFGR, LPTIM_CFGR_TIMOUT) == LPTIM_CFGR_TIMOUT)? 1UL : 0UL));
}

LL_LPTIM_TrigSw()

__STATIC_INLINE void LL_LPTIM_TrigSw

(

LPTIM_TypeDef *

LPTIMx

)

Start the LPTIM counter.

Note

This function must be called when the LPTIM instance is disabled. CFGR TRIGEN LL_LPTIM_TrigSw

Parameters

LPTIMx

Low-Power Timer instance

Return values

None

Definition at line 814 of file stm32l4xx_ll_lptim.h.

{
  CLEAR_BIT(LPTIMx->CFGR, LPTIM_CFGR_TRIGEN);
}