nRF51 SDK - S210 SoftDevice
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Hardware abstraction layer for managing the Low Power Comparator (LPCOMP). More...

Data Structures

struct  nrf_lpcomp_config_t
 LPCOMP configuration. More...
 

Macros

#define NRF_LPCOMP_CONFIG_DEFAULT   { NRF_LPCOMP_REF_SUPPLY_FOUR_EIGHT, NRF_LPCOMP_DETECT_DOWN }
 

Enumerations

enum  nrf_lpcomp_ref_t {
  NRF_LPCOMP_REF_SUPPLY_ONE_EIGHTH = LPCOMP_REFSEL_REFSEL_SupplyOneEighthPrescaling,
  NRF_LPCOMP_REF_SUPPLY_TWO_EIGHT = LPCOMP_REFSEL_REFSEL_SupplyTwoEighthsPrescaling,
  NRF_LPCOMP_REF_SUPPLY_THREE_EIGHT = LPCOMP_REFSEL_REFSEL_SupplyThreeEighthsPrescaling,
  NRF_LPCOMP_REF_SUPPLY_FOUR_EIGHT = LPCOMP_REFSEL_REFSEL_SupplyFourEighthsPrescaling,
  NRF_LPCOMP_REF_SUPPLY_FIVE_EIGHT = LPCOMP_REFSEL_REFSEL_SupplyFiveEighthsPrescaling,
  NRF_LPCOMP_REF_SUPPLY_SIX_EIGHT = LPCOMP_REFSEL_REFSEL_SupplySixEighthsPrescaling,
  NRF_LPCOMP_REF_SUPPLY_SEVEN_EIGHT = LPCOMP_REFSEL_REFSEL_SupplySevenEighthsPrescaling,
  NRF_LPCOMP_REF_EXT_REF0,
  NRF_LPCOMP_CONFIG_REF_EXT_REF1
}
 LPCOMP reference selection. More...
 
enum  nrf_lpcomp_input_t {
  NRF_LPCOMP_INPUT_0 = LPCOMP_PSEL_PSEL_AnalogInput0,
  NRF_LPCOMP_INPUT_1 = LPCOMP_PSEL_PSEL_AnalogInput1,
  NRF_LPCOMP_INPUT_2 = LPCOMP_PSEL_PSEL_AnalogInput2,
  NRF_LPCOMP_INPUT_3 = LPCOMP_PSEL_PSEL_AnalogInput3,
  NRF_LPCOMP_INPUT_4 = LPCOMP_PSEL_PSEL_AnalogInput4,
  NRF_LPCOMP_INPUT_5 = LPCOMP_PSEL_PSEL_AnalogInput5,
  NRF_LPCOMP_INPUT_6 = LPCOMP_PSEL_PSEL_AnalogInput6,
  NRF_LPCOMP_INPUT_7 = LPCOMP_PSEL_PSEL_AnalogInput7
}
 LPCOMP input selection. More...
 
enum  nrf_lpcomp_detect_t {
  NRF_LPCOMP_DETECT_CROSS = LPCOMP_ANADETECT_ANADETECT_Cross,
  NRF_LPCOMP_DETECT_UP = LPCOMP_ANADETECT_ANADETECT_Up,
  NRF_LPCOMP_DETECT_DOWN = LPCOMP_ANADETECT_ANADETECT_Down
}
 LPCOMP detection type selection. More...
 
enum  nrf_lpcomp_tasks_t {
  NRF_LPCOMP_TASKS_START = offsetof(NRF_LPCOMP_Type, TASKS_START),
  NRF_LPCOMP_TASKS_STOP = offsetof(NRF_LPCOMP_Type, TASKS_STOP),
  NRF_LPCOMP_TASKS_SAMPLE = offsetof(NRF_LPCOMP_Type, TASKS_SAMPLE)
}
 LPCOMP tasks. More...
 
enum  nrf_lpcomp_events_t {
  NRF_LPCOMP_EVENTS_READY = offsetof(NRF_LPCOMP_Type, EVENTS_READY),
  NRF_LPCOMP_EVENTS_DOWN = offsetof(NRF_LPCOMP_Type, EVENTS_DOWN),
  NRF_LPCOMP_EVENTS_UP = offsetof(NRF_LPCOMP_Type, EVENTS_UP),
  NRF_LPCOMP_EVENTS_CROSS = offsetof(NRF_LPCOMP_Type, EVENTS_CROSS)
}
 LPCOMP events. More...
 
enum  nrf_lpcomp_short_mask_t {
  NRF_LPCOMP_SHORTS_CROSS_STOP_MASK = LPCOMP_SHORTS_CROSS_STOP_Msk,
  NRF_LPCOMP_SHORTS_UP_STOP_MASK = LPCOMP_SHORTS_UP_STOP_Msk,
  NRF_LPCOMP_SHORTS_DOWN_STOP_MASK = LPCOMP_SHORTS_DOWN_STOP_Msk,
  NRF_LPCOMP_SHORTS_READY_STOP_MASK = LPCOMP_SHORTS_READY_STOP_Msk,
  NRF_LPCOMP_SHORTS_READY_SAMPLE_MASK = LPCOMP_SHORTS_READY_SAMPLE_Msk
}
 LPCOMP shorts masks. More...
 

Functions

__STATIC_INLINE void nrf_lpcomp_configure (const nrf_lpcomp_config_t *p_config)
 Function for configuring LPCOMP. More...
 
__STATIC_INLINE void nrf_lpcomp_input_select (nrf_lpcomp_input_t input)
 Function for selecting the LPCOMP input. More...
 
__STATIC_INLINE void nrf_lpcomp_enable (void)
 Function for enabling the Low Power Comparator. More...
 
__STATIC_INLINE void nrf_lpcomp_disable (void)
 Function for disabling the Low Power Comparator. More...
 
__STATIC_INLINE uint32_t nrf_lpcomp_result_get (void)
 Function for getting the last LPCOMP compare result. More...
 
__STATIC_INLINE void nrf_lpcomp_int_enable (uint32_t lpcomp_int_mask)
 Function for enabling interrupts from LPCOMP. More...
 
__STATIC_INLINE void nrf_lpcomp_int_disable (uint32_t lpcomp_int_mask)
 Function for disabling interrupts from LPCOMP. More...
 
__STATIC_INLINE bool nrf_lpcomp_int_enable_check (uint32_t lpcomp_int_mask)
 Function for getting the enabled interrupts of LCOMP. More...
 
__STATIC_INLINE uint32_t * nrf_lpcomp_task_address_get (nrf_lpcomp_tasks_t lpcomp_task)
 Function for getting the address of a specific LPCOMP task register. More...
 
__STATIC_INLINE uint32_t * nrf_lpcomp_event_address_get (nrf_lpcomp_events_t lpcomp_event)
 Function for getting the address of a specific LPCOMP event register. More...
 
__STATIC_INLINE void nrf_lpcomp_shorts_set (uint32_t lpcomp_shorts_mask)
 Function for setting LPCOMP shorts. More...
 
__STATIC_INLINE void nrf_lpcomp_shorts_clear (uint32_t lpcomp_shorts_mask)
 Function for clearing LPCOMP shorts by mask. More...
 
__STATIC_INLINE void nrf_lpcomp_task_set (nrf_lpcomp_tasks_t lpcomp_task)
 Function for setting a specific LPCOMP task. More...
 
__STATIC_INLINE void nrf_lpcomp_event_clear (nrf_lpcomp_events_t lpcomp_event)
 Function for clearing a specific LPCOMP event. More...
 
__STATIC_INLINE bool nrf_lpcomp_event_check (nrf_lpcomp_events_t lpcomp_event)
 Function for getting the state of a specific LPCOMP event. More...
 

Detailed Description

Hardware abstraction layer for managing the Low Power Comparator (LPCOMP).

Macro Definition Documentation

#define NRF_LPCOMP_CONFIG_DEFAULT   { NRF_LPCOMP_REF_SUPPLY_FOUR_EIGHT, NRF_LPCOMP_DETECT_DOWN }

Default LPCOMP configuration.

Enumeration Type Documentation

LPCOMP detection type selection.

Enumerator
NRF_LPCOMP_DETECT_CROSS 

Generate ANADETEC on crossing, both upwards and downwards crossing.

NRF_LPCOMP_DETECT_UP 

Generate ANADETEC on upwards crossing only.

NRF_LPCOMP_DETECT_DOWN 

Generate ANADETEC on downwards crossing only.

LPCOMP events.

Enumerator
NRF_LPCOMP_EVENTS_READY 

LPCOMP is ready and output is valid.

NRF_LPCOMP_EVENTS_DOWN 

Input voltage crossed the threshold going down.

NRF_LPCOMP_EVENTS_UP 

Input voltage crossed the threshold going up.

NRF_LPCOMP_EVENTS_CROSS 

Input voltage crossed the threshold in any direction.

LPCOMP input selection.

Enumerator
NRF_LPCOMP_INPUT_0 

Input 0.

NRF_LPCOMP_INPUT_1 

Input 1.

NRF_LPCOMP_INPUT_2 

Input 2.

NRF_LPCOMP_INPUT_3 

Input 3.

NRF_LPCOMP_INPUT_4 

Input 4.

NRF_LPCOMP_INPUT_5 

Input 5.

NRF_LPCOMP_INPUT_6 

Input 6.

NRF_LPCOMP_INPUT_7 

Input 7.

LPCOMP reference selection.

Enumerator
NRF_LPCOMP_REF_SUPPLY_ONE_EIGHTH 

Use supply with a 1/8 prescaler as reference.

NRF_LPCOMP_REF_SUPPLY_TWO_EIGHT 

Use supply with a 2/8 prescaler as reference.

NRF_LPCOMP_REF_SUPPLY_THREE_EIGHT 

Use supply with a 3/8 prescaler as reference.

NRF_LPCOMP_REF_SUPPLY_FOUR_EIGHT 

Use supply with a 4/8 prescaler as reference.

NRF_LPCOMP_REF_SUPPLY_FIVE_EIGHT 

Use supply with a 5/8 prescaler as reference.

NRF_LPCOMP_REF_SUPPLY_SIX_EIGHT 

Use supply with a 6/8 prescaler as reference.

NRF_LPCOMP_REF_SUPPLY_SEVEN_EIGHT 

Use supply with a 7/8 prescaler as reference.

NRF_LPCOMP_REF_EXT_REF0 

External reference 0.

NRF_LPCOMP_CONFIG_REF_EXT_REF1 

External reference 1.

LPCOMP shorts masks.

Enumerator
NRF_LPCOMP_SHORTS_CROSS_STOP_MASK 

Short between CROSS event and STOP task.

NRF_LPCOMP_SHORTS_UP_STOP_MASK 

Short between UP event and STOP task.

NRF_LPCOMP_SHORTS_DOWN_STOP_MASK 

Short between DOWN event and STOP task.

NRF_LPCOMP_SHORTS_READY_STOP_MASK 

Short between READY event and STOP task.

NRF_LPCOMP_SHORTS_READY_SAMPLE_MASK 

Short between READY event and SAMPLE task.

LPCOMP tasks.

Enumerator
NRF_LPCOMP_TASKS_START 

LPCOMP start sampling task.

NRF_LPCOMP_TASKS_STOP 

LPCOMP stop sampling task.

NRF_LPCOMP_TASKS_SAMPLE 

Sample comparator value.

Function Documentation

__STATIC_INLINE void nrf_lpcomp_configure ( const nrf_lpcomp_config_t p_config)

Function for configuring LPCOMP.

This function powers on LPCOMP and configures it. LPCOMP is in DISABLE state after configuration, so it must be enabled before using it. All shorts are inactive, events are cleared, and LPCOMP is stopped.

Parameters
[in]p_configConfiguration.
__STATIC_INLINE void nrf_lpcomp_disable ( void  )

Function for disabling the Low Power Comparator.

This function disables LPCOMP.

__STATIC_INLINE void nrf_lpcomp_enable ( void  )

Function for enabling the Low Power Comparator.

This function enables LPCOMP.

__STATIC_INLINE uint32_t* nrf_lpcomp_event_address_get ( nrf_lpcomp_events_t  lpcomp_event)

Function for getting the address of a specific LPCOMP event register.

Parameters
[in]lpcomp_eventLPCOMP event.
Returns
The address of the specified LPCOMP event.
__STATIC_INLINE bool nrf_lpcomp_event_check ( nrf_lpcomp_events_t  lpcomp_event)

Function for getting the state of a specific LPCOMP event.

Return values
trueIf the specified LPCOMP event is active.
__STATIC_INLINE void nrf_lpcomp_event_clear ( nrf_lpcomp_events_t  lpcomp_event)

Function for clearing a specific LPCOMP event.

Parameters
[in]lpcomp_eventLPCOMP event to be cleared.
__STATIC_INLINE void nrf_lpcomp_input_select ( nrf_lpcomp_input_t  input)

Function for selecting the LPCOMP input.

This function selects the active input of LPCOMP.

Parameters
[in]inputInput to be selected.
__STATIC_INLINE void nrf_lpcomp_int_disable ( uint32_t  lpcomp_int_mask)

Function for disabling interrupts from LPCOMP.

Parameters
[in]lpcomp_int_maskMask of interrupts to be disabled.
See Also
nrf_lpcomp_int_enable()
nrf_lpcomp_int_enable_check()
__STATIC_INLINE void nrf_lpcomp_int_enable ( uint32_t  lpcomp_int_mask)

Function for enabling interrupts from LPCOMP.

Parameters
[in]lpcomp_int_maskMask of interrupts to be enabled.
See Also
nrf_lpcomp_int_disable()
nrf_lpcomp_int_enable_check()
__STATIC_INLINE bool nrf_lpcomp_int_enable_check ( uint32_t  lpcomp_int_mask)

Function for getting the enabled interrupts of LCOMP.

Parameters
[in]lpcomp_int_maskMask of interrupts to be checked.
Return values
trueIf any of interrupts of the specified mask are enabled.
See Also
nrf_lpcomp_int_enable()
nrf_lpcomp_int_disable()
__STATIC_INLINE uint32_t nrf_lpcomp_result_get ( void  )

Function for getting the last LPCOMP compare result.

Returns
The last compare result. If 0 then VIN+ < VIN-, if 1 then the opposite.
__STATIC_INLINE void nrf_lpcomp_shorts_clear ( uint32_t  lpcomp_shorts_mask)

Function for clearing LPCOMP shorts by mask.

Parameters
[in]lpcomp_shorts_maskLPCOMP shorts to be cleared.
__STATIC_INLINE void nrf_lpcomp_shorts_set ( uint32_t  lpcomp_shorts_mask)

Function for setting LPCOMP shorts.

Parameters
[in]lpcomp_shorts_maskLPCOMP shorts by mask.
__STATIC_INLINE uint32_t* nrf_lpcomp_task_address_get ( nrf_lpcomp_tasks_t  lpcomp_task)

Function for getting the address of a specific LPCOMP task register.

Parameters
[in]lpcomp_taskLPCOMP task.
Returns
The address of the specified LPCOMP task.
__STATIC_INLINE void nrf_lpcomp_task_set ( nrf_lpcomp_tasks_t  lpcomp_task)

Function for setting a specific LPCOMP task.

Parameters
[in]lpcomp_taskLPCOMP task to be set.