Comparator (COMP) peripheral driver. More...

Modules
	COMP peripheral driver configuration

Data Structures
struct	nrfx_comp_config_t
	COMP configuration. More...

Macros
#define	NRFX_VOLTAGE_THRESHOLD_TO_INT(vol, ref) (uint8_t)(((vol) > ((ref) / 64)) ? (NRFX_ROUNDED_DIV((vol) * 64,(ref)) - 1) : 0)
	Macro for converting the threshold voltage to an integer value (needed by the COMP_TH register). More...

#define	NRFX_COMP_CONFIG_TH
	COMP threshold default configuration. More...

#define	NRFX_COMP_DEFAULT_CONFIG(_input)
	COMP driver default configuration including the COMP HAL configuration. More...

Typedefs
typedef void(*	nrfx_comp_event_handler_t )(nrf_comp_event_t event)
	COMP event handler function type. More...

Enumerations
enum	nrfx_comp_short_mask_t { NRFX_COMP_SHORT_STOP_AFTER_CROSS_EVT = COMP_SHORTS_CROSS_STOP_Msk, NRFX_COMP_SHORT_STOP_AFTER_UP_EVT = COMP_SHORTS_UP_STOP_Msk, NRFX_COMP_SHORT_STOP_AFTER_DOWN_EVT = COMP_SHORTS_DOWN_STOP_Msk }
	COMP shortcut masks. More...

enum	nrfx_comp_evt_en_mask_t { NRFX_COMP_EVT_EN_CROSS_MASK = COMP_INTENSET_CROSS_Msk, NRFX_COMP_EVT_EN_UP_MASK = COMP_INTENSET_UP_Msk, NRFX_COMP_EVT_EN_DOWN_MASK = COMP_INTENSET_DOWN_Msk, NRFX_COMP_EVT_EN_READY_MASK = COMP_INTENSET_READY_Msk }
	COMP events masks. More...

Functions
nrfx_err_t	nrfx_comp_init (nrfx_comp_config_t const *p_config, nrfx_comp_event_handler_t event_handler)
	Function for initializing the COMP driver. More...

void	nrfx_comp_uninit (void)
	Function for uninitializing the COMP driver. More...

void	nrfx_comp_pin_select (nrf_comp_input_t psel)
	Function for setting the analog input. More...

void	nrfx_comp_start (uint32_t comp_evt_en_mask, uint32_t comp_shorts_mask)
	Function for starting the COMP peripheral and interrupts. More...

void	nrfx_comp_stop (void)
	Function for stopping the COMP peripheral. More...

uint32_t	nrfx_comp_sample (void)
	Function for copying the current state of the comparator result to the RESULT register. More...

__STATIC_INLINE uint32_t	nrfx_comp_task_address_get (nrf_comp_task_t task)
	Function for getting the address of a COMP task. More...

__STATIC_INLINE uint32_t	nrfx_comp_event_address_get (nrf_comp_event_t event)
	Function for getting the address of a COMP event. More...

Detailed Description

Comparator (COMP) peripheral driver.

Macro Definition Documentation

#define NRFX_COMP_CONFIG_TH

Value:

{ \
 .th_down = NRFX_VOLTAGE_THRESHOLD_TO_INT(0.5, 1.8), \
 .th_up = NRFX_VOLTAGE_THRESHOLD_TO_INT(1.5, 1.8) \
}

COMP threshold default configuration.

#define NRFX_COMP_DEFAULT_CONFIG ( _input )

Value:

{ \
 .reference = (nrf_comp_ref_t)NRFX_COMP_CONFIG_REF, \
 .ext_ref = NRF_COMP_EXT_REF_0, \
 .main_mode = (nrf_comp_main_mode_t)NRFX_COMP_CONFIG_MAIN_MODE, \
 .threshold = NRFX_COMP_CONFIG_TH, \
 .speed_mode = (nrf_comp_sp_mode_t)NRFX_COMP_CONFIG_SPEED_MODE, \
 .hyst = (nrf_comp_hyst_t)NRFX_COMP_CONFIG_HYST, \
 .isource = (nrf_isource_t)NRFX_COMP_CONFIG_ISOURCE, \
 .input = (nrf_comp_input_t)_input, \
 .interrupt_priority = NRFX_COMP_CONFIG_IRQ_PRIORITY \
}

COMP driver default configuration including the COMP HAL configuration.

#define NRFX_VOLTAGE_THRESHOLD_TO_INT	(	vol,
		ref
	)	(uint8_t)(((vol) > ((ref) / 64)) ? (NRFX_ROUNDED_DIV((vol) * 64,(ref)) - 1) : 0)

Macro for converting the threshold voltage to an integer value (needed by the COMP_TH register).

Parameters

[in]	vol	Voltage to be changed to COMP_TH register value. This value must not be smaller than reference voltage divided by 64.
[in]	ref	Reference voltage.

Typedef Documentation

typedef void(* nrfx_comp_event_handler_t)(nrf_comp_event_t event)

COMP event handler function type.

Parameters

[in] event COMP event.

Enumeration Type Documentation

enum nrfx_comp_evt_en_mask_t

COMP events masks.

Enumerator
NRFX_COMP_EVT_EN_CROSS_MASK	CROSS event (generated after VIN+ == VIN-).
NRFX_COMP_EVT_EN_UP_MASK	UP event (generated when VIN+ crosses VIN- while increasing).
NRFX_COMP_EVT_EN_DOWN_MASK	DOWN event (generated when VIN+ crosses VIN- while decreasing).
NRFX_COMP_EVT_EN_READY_MASK	READY event (generated when the module is ready).

enum nrfx_comp_short_mask_t

COMP shortcut masks.

Enumerator
NRFX_COMP_SHORT_STOP_AFTER_CROSS_EVT	Shortcut between the CROSS event and the STOP task.
NRFX_COMP_SHORT_STOP_AFTER_UP_EVT	Shortcut between the UP event and the STOP task.
NRFX_COMP_SHORT_STOP_AFTER_DOWN_EVT	Shortcut between the DOWN event and the STOP task.

Function Documentation

__STATIC_INLINE uint32_t nrfx_comp_event_address_get ( nrf_comp_event_t event )

Function for getting the address of a COMP event.

Parameters

[in] event COMP event.

Returns: Address of the given COMP event.

nrfx_err_t nrfx_comp_init	(	nrfx_comp_config_t const *	p_config,
		nrfx_comp_event_handler_t	event_handler
	)

Function for initializing the COMP driver.

This function initializes the COMP driver, but does not enable the peripheral or any interrupts. To start the driver, call the function nrfx_comp_start() after initialization.

Parameters

[in]	p_config	Pointer to the structure with the initial configuration.
[in]	event_handler	Event handler provided by the user. Must not be NULL.

Return values

NRFX_SUCCESS	Initialization was successful.
NRFX_ERROR_INVALID_STATE	The driver has already been initialized.
NRFX_ERROR_BUSY	The LPCOMP peripheral is already in use. This is possible only if Peripheral Resource Sharing (PRS) module is enabled.

void nrfx_comp_pin_select ( nrf_comp_input_t psel )

Function for setting the analog input.

Parameters

[in] psel COMP analog pin selection.

uint32_t nrfx_comp_sample ( void )

Function for copying the current state of the comparator result to the RESULT register.

Return values

0	The input voltage is below the threshold (VIN+ < VIN-).
1	The input voltage is above the threshold (VIN+ > VIN-).

void nrfx_comp_start	(	uint32_t	comp_evt_en_mask,
		uint32_t	comp_shorts_mask
	)

Function for starting the COMP peripheral and interrupts.

Before calling this function, the driver must be initialized. This function enables the COMP peripheral and its interrupts.

Parameters

[in]	comp_evt_en_mask	Mask of events to be enabled. This parameter is to be built as an OR of elements from nrfx_comp_evt_en_mask_t.
[in]	comp_shorts_mask	Mask of shortcuts to be enabled. This parameter is to be built as an OR of elements from nrfx_comp_short_mask_t.

See Also: nrfx_comp_init

void nrfx_comp_stop ( void )

Function for stopping the COMP peripheral.

Before calling this function, the driver must be enabled. This function disables the COMP peripheral and its interrupts.

See Also: nrfx_comp_uninit

__STATIC_INLINE uint32_t nrfx_comp_task_address_get ( nrf_comp_task_t task )

Function for getting the address of a COMP task.

Parameters

[in] task COMP task.

Returns: Address of the given COMP task.

void nrfx_comp_uninit ( void )

Function for uninitializing the COMP driver.

This function uninitializes the COMP driver. The COMP peripheral and its interrupts are disabled, and local variables are cleaned. After this call, you must initialize the driver again by calling nrfx_comp_init() if you want to use it.

See Also: nrfx_comp_stop

Modules

Data Structures

Macros

Typedefs

Enumerations

Functions

Detailed Description

Macro Definition Documentation

Typedef Documentation

Enumeration Type Documentation

Function Documentation