QDEC driver

Quadrature decoder (QDEC) driver. More...

Modules
	QDEC peripheral driver configuration

Data Structures
struct	nrf_drv_qdec_config_t
	QDEC configuration structure. More...
struct	nrf_drv_qdec_sample_data_evt_t
	QDEC sample event data. More...
struct	nrf_drv_qdec_report_data_evt_t
	QDEC report event data. More...
struct	nrf_drv_qdec_event_t
	QDEC event handler structure. More...

Macros
#define	NRF_DRV_QDEC_DEFAULT_CONFIG
	QDEC default configuration. More...

Typedefs
typedef void(*	qdec_event_handler_t )(nrf_drv_qdec_event_t event)
	QDEC event handler. More...

Functions
ret_code_t	nrf_drv_qdec_init (nrf_drv_qdec_config_t const *p_config, qdec_event_handler_t event_handler)
	Function for initializing QDEC. More...
void	nrf_drv_qdec_uninit (void)
	Function for uninitializing QDEC. More...
void	nrf_drv_qdec_enable (void)
	Function for enabling QDEC. More...
void	nrf_drv_qdec_disable (void)
	Function for disabling QDEC. More...
void	nrf_drv_qdec_accumulators_read (int16_t *p_acc, int16_t *p_accdbl)
	Function for reading accumulated transitions QDEC. More...
void	nrf_drv_qdec_task_address_get (nrf_qdec_task_t task, uint32_t *p_task)
	Function for returning the address of a specific timer task. More...
void	nrf_drv_qdec_event_address_get (nrf_qdec_event_t event, uint32_t *p_event)
	Function for returning the address of a specific timer event. More...

Detailed Description

Quadrature decoder (QDEC) driver.

Macro Definition Documentation

#define NRF_DRV_QDEC_DEFAULT_CONFIG

Value:

{ \
 .reportper = (nrf_qdec_reportper_t)QDEC_CONFIG_REPORTPER, \
 .sampleper = (nrf_qdec_sampleper_t)QDEC_CONFIG_SAMPLEPER, \
 .psela = QDEC_CONFIG_PIO_A, \
 .pselb = QDEC_CONFIG_PIO_B, \
 .pselled = QDEC_CONFIG_PIO_LED, \
 .ledpre = QDEC_CONFIG_LEDPRE, \
 .ledpol = (nrf_qdec_ledpol_t)QDEC_CONFIG_LEDPOL, \
 .interrupt_priority = QDEC_CONFIG_IRQ_PRIORITY, \
 .dbfen = QDEC_CONFIG_DBFEN, \
 .sample_inten = QDEC_CONFIG_SAMPLE_INTEN \
 }

QDEC default configuration.

Typedef Documentation

typedef void(* qdec_event_handler_t)(nrf_drv_qdec_event_t event)

QDEC event handler.

Parameters

[in]

event

QDEC event structure.

Function Documentation

void nrf_drv_qdec_accumulators_read	(	int16_t *	p_acc,
		int16_t *	p_accdbl
	)

Function for reading accumulated transitions QDEC.

Note

Function asserts if module is not enabled.

Accumulators are cleared after reading.

Parameters

[out]	p_acc	Pointer to store accumulated transitions.
[out]	p_accdbl	Pointer to store accumulated double transitions.

void nrf_drv_qdec_disable

(

void

)

Function for disabling QDEC.

Note

Function asserts if module is uninitialized or disabled.

void nrf_drv_qdec_enable

(

void

)

Function for enabling QDEC.

Note

Function asserts if module is uninitialized or enabled.

void nrf_drv_qdec_event_address_get	(	nrf_qdec_event_t	event,
		uint32_t *	p_event
	)

Function for returning the address of a specific timer event.

Parameters

[in]	event	QDEC event.
[out]	p_event	Event address.

ret_code_t nrf_drv_qdec_init	(	nrf_drv_qdec_config_t const *	p_config,
		qdec_event_handler_t	event_handler
	)

Function for initializing QDEC.

Parameters

[in]	p_config	Pointer to configuration parameters.
[in]	event_handler	Event handler function.

Return values

NRF_SUCCESS	If initialization was successful.
NRF_ERROR_INVALID_PARAM	If invalid parameters were supplied.
NRF_ERROR_INVALID_STATE	If QDEC was already initialized.

void nrf_drv_qdec_task_address_get	(	nrf_qdec_task_t	task,
		uint32_t *	p_task
	)

Function for returning the address of a specific timer task.

Parameters

[in]	task	QDEC task.
[out]	p_task	Task address.

void nrf_drv_qdec_uninit

(

void

)

Function for uninitializing QDEC.

Note

Function asserts if module is uninitialized.