Operation on comparator instance

Functions
__STATIC_INLINE void	LL_COMP_Enable (COMP_TypeDef *COMPx)
	Enable comparator instance. More...
__STATIC_INLINE void	LL_COMP_Disable (COMP_TypeDef *COMPx)
	Disable comparator instance. CSR EN LL_COMP_Disable. More...
__STATIC_INLINE uint32_t	LL_COMP_IsEnabled (COMP_TypeDef *COMPx)
	Get comparator enable state (0: COMP is disabled, 1: COMP is enabled) CSR EN LL_COMP_IsEnabled. More...
__STATIC_INLINE void	LL_COMP_Lock (COMP_TypeDef *COMPx)
	Lock comparator instance. More...
__STATIC_INLINE uint32_t	LL_COMP_IsLocked (COMP_TypeDef *COMPx)
	Get comparator lock state (0: COMP is unlocked, 1: COMP is locked). More...
__STATIC_INLINE uint32_t	LL_COMP_ReadOutputLevel (COMP_TypeDef *COMPx)
	Read comparator instance output level. More...

Detailed Description

Function Documentation

LL_COMP_Disable()

__STATIC_INLINE void LL_COMP_Disable

(

COMP_TypeDef *

COMPx

)

Disable comparator instance. CSR EN LL_COMP_Disable.

Parameters

COMPx

Comparator instance

Return values

None

Definition at line 770 of file stm32l4xx_ll_comp.h.

{
  CLEAR_BIT(COMPx->CSR, COMP_CSR_EN);
}

LL_COMP_Enable()

__STATIC_INLINE void LL_COMP_Enable

(

COMP_TypeDef *

COMPx

)

Enable comparator instance.

Note

After enable from off state, comparator requires a delay to reach reach propagation delay specification. Refer to device datasheet, parameter "tSTART". CSR EN LL_COMP_Enable

Parameters

COMPx

Comparator instance

Return values

None

Definition at line 759 of file stm32l4xx_ll_comp.h.

{
  SET_BIT(COMPx->CSR, COMP_CSR_EN);
}

LL_COMP_IsEnabled()

__STATIC_INLINE uint32_t LL_COMP_IsEnabled

(

COMP_TypeDef *

COMPx

)

Get comparator enable state (0: COMP is disabled, 1: COMP is enabled) CSR EN LL_COMP_IsEnabled.

Parameters

COMPx

Comparator instance

Return values

State

of bit (1 or 0).

Definition at line 782 of file stm32l4xx_ll_comp.h.

{
  return ((READ_BIT(COMPx->CSR, COMP_CSR_EN) == (COMP_CSR_EN)) ? 1UL : 0UL);
}

LL_COMP_IsLocked()

__STATIC_INLINE uint32_t LL_COMP_IsLocked

(

COMP_TypeDef *

COMPx

)

Get comparator lock state (0: COMP is unlocked, 1: COMP is locked).

Note

Once locked, comparator configuration can be accessed in read-only.

The only way to unlock the comparator is a device hardware reset. CSR LOCK LL_COMP_IsLocked

Parameters

COMPx

Comparator instance

Return values

State

of bit (1 or 0).

Definition at line 809 of file stm32l4xx_ll_comp.h.

{
  return ((READ_BIT(COMPx->CSR, COMP_CSR_LOCK) == (COMP_CSR_LOCK)) ? 1UL : 0UL);
}

LL_COMP_Lock()

__STATIC_INLINE void LL_COMP_Lock

(

COMP_TypeDef *

COMPx

)

Lock comparator instance.

Note

Once locked, comparator configuration can be accessed in read-only.

The only way to unlock the comparator is a device hardware reset. CSR LOCK LL_COMP_Lock

Parameters

COMPx

Comparator instance

Return values

None

Definition at line 795 of file stm32l4xx_ll_comp.h.

{
  SET_BIT(COMPx->CSR, COMP_CSR_LOCK);
}

LL_COMP_ReadOutputLevel()

__STATIC_INLINE uint32_t LL_COMP_ReadOutputLevel

(

COMP_TypeDef *

COMPx

)

Read comparator instance output level.

Note

The comparator output level depends on the selected polarity (Refer to function LL_COMP_SetOutputPolarity()). If the comparator polarity is not inverted:

• Comparator output is low when the input plus is at a lower voltage than the input minus
• Comparator output is high when the input plus is at a higher voltage than the input minus If the comparator polarity is inverted:
• Comparator output is high when the input plus is at a lower voltage than the input minus
• Comparator output is low when the input plus is at a higher voltage than the input minus CSR VALUE LL_COMP_ReadOutputLevel

Parameters

COMPx

Comparator instance

Return values

Returned

value can be one of the following values: LL_COMP_OUTPUT_LEVEL_LOW LL_COMP_OUTPUT_LEVEL_HIGH

Definition at line 834 of file stm32l4xx_ll_comp.h.

{
  return (uint32_t)(READ_BIT(COMPx->CSR, COMP_CSR_VALUE)
                    >> LL_COMP_OUTPUT_LEVEL_BITOFFSET_POS);
}