Hardware access layer for managing the Quadrature Decoder (QDEC) peripheral. More...

Macros
#define	NRF_QDEC_LED_NOT_CONNECTED 0xFFFFFFFF
	This value can be provided as a parameter for the nrf_qdec_pio_assign function call to specify that a LED signal shall not be use by the QDEC and connected to a physical pin.

Enumerations
enum	nrf_qdec_task_t { NRF_QDEC_TASK_START = offsetof(NRF_QDEC_Type, TASKS_START), NRF_QDEC_TASK_STOP = offsetof(NRF_QDEC_Type, TASKS_STOP), NRF_QDEC_TASK_READCLRACC = offsetof(NRF_QDEC_Type, TASKS_READCLRACC) }
	QDEC tasks. More...

enum	nrf_qdec_event_t { NRF_QDEC_EVENT_SAMPLERDY = offsetof(NRF_QDEC_Type, EVENTS_SAMPLERDY), NRF_QDEC_EVENT_REPORTRDY = offsetof(NRF_QDEC_Type, EVENTS_REPORTRDY), NRF_QDEC_EVENT_ACCOF = offsetof(NRF_QDEC_Type, EVENTS_ACCOF) }
	QDEC events. More...

enum	nrf_qdec_short_mask_t { NRF_QDEC_SHORT_REPORTRDY_READCLRACC_MASK = QDEC_SHORTS_REPORTRDY_READCLRACC_Msk, NRF_QDEC_SHORT_SAMPLERDY_STOP_MASK = QDEC_SHORTS_SAMPLERDY_STOP_Msk }
	QDEC shortcuts. More...

enum	nrf_qdec_int_mask_t { NRF_QDEC_INT_SAMPLERDY_MASK = QDEC_INTENSET_SAMPLERDY_Msk, NRF_QDEC_INT_REPORTRDY_MASK = QDEC_INTENSET_REPORTRDY_Msk, NRF_QDEC_INT_ACCOF_MASK = QDEC_INTENSET_ACCOF_Msk }
	QDEC interrupts. More...

enum	nrf_qdec_enable_t { NRF_QDEC_DISABLE = QDEC_ENABLE_ENABLE_Disabled, NRF_QDEC_ENABLE = QDEC_ENABLE_ENABLE_Enabled }
	States of the enable bit. More...

enum	nrf_qdec_dbfen_t { NRF_QDEC_DBFEN_DISABLE = QDEC_DBFEN_DBFEN_Disabled, NRF_QDEC_DBFEN_ENABLE = QDEC_DBFEN_DBFEN_Enabled }
	States of the debounce filter enable bit. More...

enum	nrf_qdec_ledpol_t { NRF_QDEC_LEPOL_ACTIVE_LOW = QDEC_LEDPOL_LEDPOL_ActiveLow, NRF_QDEC_LEPOL_ACTIVE_HIGH = QDEC_LEDPOL_LEDPOL_ActiveHigh }
	Active LED polarity. More...

enum	nrf_qdec_sampleper_t { NRF_QDEC_SAMPLEPER_128us = QDEC_SAMPLEPER_SAMPLEPER_128us, NRF_QDEC_SAMPLEPER_256us = QDEC_SAMPLEPER_SAMPLEPER_256us, NRF_QDEC_SAMPLEPER_512us = QDEC_SAMPLEPER_SAMPLEPER_512us, NRF_QDEC_SAMPLEPER_1024us = QDEC_SAMPLEPER_SAMPLEPER_1024us, NRF_QDEC_SAMPLEPER_2048us = QDEC_SAMPLEPER_SAMPLEPER_2048us, NRF_QDEC_SAMPLEPER_4096us = QDEC_SAMPLEPER_SAMPLEPER_4096us, NRF_QDEC_SAMPLEPER_8192us = QDEC_SAMPLEPER_SAMPLEPER_8192us, NRF_QDEC_SAMPLEPER_16384us = QDEC_SAMPLEPER_SAMPLEPER_16384us }
	Available sampling periods. More...

enum	nrf_qdec_reportper_t { NRF_QDEC_REPORTPER_1 = QDEC_REPORTPER_REPORTPER_1Smpl, NRF_QDEC_REPORTPER_10 = QDEC_REPORTPER_REPORTPER_10Smpl, NRF_QDEC_REPORTPER_40 = QDEC_REPORTPER_REPORTPER_40Smpl, NRF_QDEC_REPORTPER_80 = QDEC_REPORTPER_REPORTPER_80Smpl, NRF_QDEC_REPORTPER_120 = QDEC_REPORTPER_REPORTPER_120Smpl, NRF_QDEC_REPORTPER_160 = QDEC_REPORTPER_REPORTPER_160Smpl, NRF_QDEC_REPORTPER_200 = QDEC_REPORTPER_REPORTPER_200Smpl, NRF_QDEC_REPORTPER_240 = QDEC_REPORTPER_REPORTPER_240Smpl, NRF_QDEC_REPORTPER_280 = QDEC_REPORTPER_REPORTPER_280Smpl, NRF_QDEC_REPORTPER_DISABLED = (QDEC_REPORTPER_REPORTPER_Msk >> QDEC_REPORTPER_REPORTPER_Pos) + 1 }
	Available report periods. More...

Functions
__STATIC_INLINE void	nrf_qdec_enable (void)
	Function for enabling QDEC.

__STATIC_INLINE void	nrf_qdec_disable (void)
	Function for disabling QDEC.

__STATIC_INLINE uint32_t	nrf_qdec_enable_get (void)
	Function for returning the enable state of QDEC. More...

__STATIC_INLINE void	nrf_qdec_int_enable (uint32_t mask)
	Function for enabling QDEC interrupts by mask. More...

__STATIC_INLINE void	nrf_qdec_int_disable (uint32_t mask)
	Function for disabling QDEC interrupts by mask. More...

__STATIC_INLINE uint32_t	nrf_qdec_int_enable_check (nrf_qdec_int_mask_t mask)
	Function for getting the enabled interrupts of the QDEC. More...

__STATIC_INLINE void	nrf_qdec_dbfen_enable (void)
	Function for enabling the QDEC debouncing filter.

__STATIC_INLINE void	nrf_qdec_dbfen_disable (void)
	Function for disabling the QDEC debouncing filter.

__STATIC_INLINE uint32_t	nrf_qdec_dbfen_get (void)
	Function for getting the state of the QDEC debouncing filter. More...

__STATIC_INLINE void	nrf_qdec_pio_assign (uint32_t psela, uint32_t pselb, uint32_t pselled)
	Function for assigning QDEC pins. More...

__STATIC_INLINE void	nrf_qdec_task_trigger (nrf_qdec_task_t task)
	Function for setting the specified QDEC task. More...

__STATIC_INLINE uint32_t *	nrf_qdec_task_address_get (nrf_qdec_task_t task)
	Function for retrieving the address of a QDEC task register. More...

__STATIC_INLINE void	nrf_qdec_event_clear (nrf_qdec_event_t event)
	Function for clearing the specified QDEC event. More...

__STATIC_INLINE uint32_t	nrf_qdec_event_check (nrf_qdec_event_t event)
	Function for getting the state of the specified QDEC event. More...

__STATIC_INLINE uint32_t *	nrf_qdec_event_address_get (nrf_qdec_event_t event)
	Function for retrieving the address of the specified QDEC event register. More...

__STATIC_INLINE void	nrf_qdec_shorts_enable (uint32_t mask)
	Function for setting QDEC shortcuts. More...

__STATIC_INLINE void	nrf_qdec_shorts_disable (uint32_t mask)
	Function for clearing shortcuts of the QDEC by mask. More...

__STATIC_INLINE int32_t	nrf_qdec_sampleper_reg_get (void)
	Function for retrieving value of the sampling period. More...

__STATIC_INLINE uint32_t	nrf_qdec_sampleper_to_value (uint32_t sampleper)
	Function for converting return value of the `nrf_qdec_sampleper_reg_get()` function to microseconds. More...

__STATIC_INLINE void	nrf_qdec_sampleper_set (nrf_qdec_sampleper_t sample_per)
	Function for setting value of the QDEC sampling period. More...

__STATIC_INLINE int32_t	nrf_qdec_sample_get (void)
	Function for retrieving value of the QDEC SAMPLE register. More...

__STATIC_INLINE int32_t	nrf_qdec_acc_get (void)
	Function for retrieving value of the QDEC ACC register. More...

__STATIC_INLINE int32_t	nrf_qdec_accread_get (void)
	Function for retrieving value of the QDEC ACCREAD register. More...

__STATIC_INLINE uint32_t	nrf_qdec_accdbl_get (void)
	Function for retrieving value of the QDEC ACCDBL register. More...

__STATIC_INLINE uint32_t	nrf_qdec_accdblread_get (void)
	Function for retrieving value of the QDEC ACCDBLREAD register. More...

__STATIC_INLINE void	nrf_qdec_ledpre_set (uint32_t time_us)
	Function for setting delay time between setting LED active state and start sampling. More...

__STATIC_INLINE uint32_t	nrf_qdec_ledpre_get (void)
	Function for retrieving how long the LED is switched on before sampling. More...

__STATIC_INLINE void	nrf_qdec_reportper_set (nrf_qdec_reportper_t reportper)
	Function for setting the report period (in samples). More...

__STATIC_INLINE uint32_t	nrf_qdec_reportper_reg_get (void)
	Function for retrieving the report period. More...

__STATIC_INLINE uint32_t	nrf_qdec_reportper_to_value (uint32_t reportper)
	Function for retrieving the value of QDEC SAMPLEPER register. More...

__STATIC_INLINE void	nrf_qdec_ledpol_set (nrf_qdec_ledpol_t pol)
	Function for setting the active level for the LED. More...

__STATIC_INLINE uint32_t	nrf_qdec_ledpol_get (void)
	Function for retrieving the active level for the LED. More...

Detailed Description

Hardware access layer for managing the Quadrature Decoder (QDEC) peripheral.

Enumeration Type Documentation

enum nrf_qdec_dbfen_t

States of the debounce filter enable bit.

Enumerator
NRF_QDEC_DBFEN_DISABLE	Mask for disabling the debounce filter.
NRF_QDEC_DBFEN_ENABLE	Mask for enabling the debounce filter.

enum nrf_qdec_enable_t

States of the enable bit.

Enumerator
NRF_QDEC_DISABLE	Mask for disabling the QDEC periperal. When disabled, the QDEC decoder pins are not active.
NRF_QDEC_ENABLE	Mask for enabling the QDEC periperal. When enabled, the QDEC pins are active.

enum nrf_qdec_event_t

QDEC events.

Enumerator
NRF_QDEC_EVENT_SAMPLERDY	Event generated for every new sample.
NRF_QDEC_EVENT_REPORTRDY	Event generated for every new report.
NRF_QDEC_EVENT_ACCOF	Event generated for every accumulator overflow.

enum nrf_qdec_int_mask_t

QDEC interrupts.

Enumerator
NRF_QDEC_INT_SAMPLERDY_MASK	Mask for enabling or disabling an interrupt on SAMPLERDY event.
NRF_QDEC_INT_REPORTRDY_MASK	Mask for enabling or disabling an interrupt on REPORTRDY event.
NRF_QDEC_INT_ACCOF_MASK	Mask for enabling or disabling an interrupt on ACCOF event.

enum nrf_qdec_ledpol_t

Active LED polarity.

Enumerator
NRF_QDEC_LEPOL_ACTIVE_LOW	QDEC LED active on output pin low.
NRF_QDEC_LEPOL_ACTIVE_HIGH	QDEC LED active on output pin high.

enum nrf_qdec_reportper_t

Available report periods.

Enumerator
NRF_QDEC_REPORTPER_1	QDEC report period 1 sample.
NRF_QDEC_REPORTPER_10	QDEC report period 10 samples.
NRF_QDEC_REPORTPER_40	QDEC report period 40 samples.
NRF_QDEC_REPORTPER_80	QDEC report period 80 samples.
NRF_QDEC_REPORTPER_120	QDEC report period 120 samples.
NRF_QDEC_REPORTPER_160	QDEC report period 160 samples.
NRF_QDEC_REPORTPER_200	QDEC report period 200 samples.
NRF_QDEC_REPORTPER_240	QDEC report period 240 samples.
NRF_QDEC_REPORTPER_280	QDEC report period 280 samples.
NRF_QDEC_REPORTPER_DISABLED	QDEC reporting disabled. Deprecated.

enum nrf_qdec_sampleper_t

Available sampling periods.

Enumerator
NRF_QDEC_SAMPLEPER_128us	QDEC sampling period 128 microseconds.
NRF_QDEC_SAMPLEPER_256us	QDEC sampling period 256 microseconds.
NRF_QDEC_SAMPLEPER_512us	QDEC sampling period 512 microseconds.
NRF_QDEC_SAMPLEPER_1024us	QDEC sampling period 1024 microseconds.
NRF_QDEC_SAMPLEPER_2048us	QDEC sampling period 2048 microseconds.
NRF_QDEC_SAMPLEPER_4096us	QDEC sampling period 4096 microseconds.
NRF_QDEC_SAMPLEPER_8192us	QDEC sampling period 8192 microseconds.
NRF_QDEC_SAMPLEPER_16384us	QDEC sampling period 16384 microseconds.

enum nrf_qdec_short_mask_t

QDEC shortcuts.

Enumerator
NRF_QDEC_SHORT_REPORTRDY_READCLRACC_MASK	Shortcut between REPORTRDY event and READCLRACC task.
NRF_QDEC_SHORT_SAMPLERDY_STOP_MASK	Shortcut between SAMPLERDY event and STOP task.

enum nrf_qdec_task_t

QDEC tasks.

Enumerator
NRF_QDEC_TASK_START	Starting the quadrature decoder.
NRF_QDEC_TASK_STOP	Stopping the quadrature decoder.
NRF_QDEC_TASK_READCLRACC	Reading and clearing ACC and ACCDBL registers.

Function Documentation

__STATIC_INLINE int32_t nrf_qdec_acc_get ( void )

Function for retrieving value of the QDEC ACC register.

Returns: Value of the ACC register.

__STATIC_INLINE uint32_t nrf_qdec_accdbl_get ( void )

Function for retrieving value of the QDEC ACCDBL register.

Returns: Value of the ACCDBL register.

__STATIC_INLINE uint32_t nrf_qdec_accdblread_get ( void )

Function for retrieving value of the QDEC ACCDBLREAD register.

Returns: Value of the ACCDBLREAD register.

__STATIC_INLINE int32_t nrf_qdec_accread_get ( void )

Function for retrieving value of the QDEC ACCREAD register.

Returns: Value of the ACCREAD register.

__STATIC_INLINE uint32_t nrf_qdec_dbfen_get ( void )

Function for getting the state of the QDEC debouncing filter.

Return values

NRF_QDEC_DBFEN_DISABLE	The debouncing filter is disabled.
NRF_QDEC_DBFEN_ENABLE	The debouncing filter is enabled.

__STATIC_INLINE uint32_t nrf_qdec_enable_get ( void )

Function for returning the enable state of QDEC.

Returns: State of the register.

__STATIC_INLINE uint32_t* nrf_qdec_event_address_get ( nrf_qdec_event_t event )

Function for retrieving the address of the specified QDEC event register.

Parameters

[in] event QDEC event to get its address.

Returns: Address of the specified QDEC event.

__STATIC_INLINE uint32_t nrf_qdec_event_check ( nrf_qdec_event_t event )

Function for getting the state of the specified QDEC event.

Parameters

[in] event QDEC event to be checked.

Returns: State of the specified QDEC event.

__STATIC_INLINE void nrf_qdec_event_clear ( nrf_qdec_event_t event )

Function for clearing the specified QDEC event.

Parameters

[in] event QDEC event to be cleared.

__STATIC_INLINE void nrf_qdec_int_disable ( uint32_t mask )

Function for disabling QDEC interrupts by mask.

Parameters

[in] mask Mask of interrupts to be disabled.

__STATIC_INLINE void nrf_qdec_int_enable ( uint32_t mask )

Function for enabling QDEC interrupts by mask.

Parameters

[in] mask Mask of interrupts to be enabled.

__STATIC_INLINE uint32_t nrf_qdec_int_enable_check ( nrf_qdec_int_mask_t mask )

Function for getting the enabled interrupts of the QDEC.

Parameters

[in] mask Mask of interrupts to be checked.

Returns: Bitfield with enabled interrupts.

__STATIC_INLINE uint32_t nrf_qdec_ledpol_get ( void )

Function for retrieving the active level for the LED.

Returns: Level of the active signal of the LED.

__STATIC_INLINE void nrf_qdec_ledpol_set ( nrf_qdec_ledpol_t pol )

Function for setting the active level for the LED.

Parameters

[in] pol Level of the active signal of the LED.

__STATIC_INLINE uint32_t nrf_qdec_ledpre_get ( void )

Function for retrieving how long the LED is switched on before sampling.

Returns: The gap in time in microseconds between switched LED to active state and start sampling.

__STATIC_INLINE void nrf_qdec_ledpre_set ( uint32_t time_us )

Function for setting delay time between setting LED active state and start sampling.

Parameters

[in] time_us Delay time (in microseconds) between setting LED active state and start sampling.

__STATIC_INLINE void nrf_qdec_pio_assign	(	uint32_t	psela,
		uint32_t	pselb,
		uint32_t	pselled
	)

Function for assigning QDEC pins.

Parameters

[in]	psela	Pin number.
[in]	pselb	Pin number.
[in]	pselled	Pin number.

__STATIC_INLINE uint32_t nrf_qdec_reportper_reg_get ( void )

Function for retrieving the report period.

Returns: The report period.

__STATIC_INLINE void nrf_qdec_reportper_set ( nrf_qdec_reportper_t reportper )

Function for setting the report period (in samples).

Parameters

[in] reportper The number of samples.

__STATIC_INLINE uint32_t nrf_qdec_reportper_to_value ( uint32_t reportper )

Function for retrieving the value of QDEC SAMPLEPER register.

Parameters

[in] reportper Reportper to be converted to amount of samples per report.

Returns: Number of samples per report.

__STATIC_INLINE int32_t nrf_qdec_sample_get ( void )

Function for retrieving value of the QDEC SAMPLE register.

Returns: Value of the SAMPLE register.

__STATIC_INLINE int32_t nrf_qdec_sampleper_reg_get ( void )

Function for retrieving value of the sampling period.

Returns: Sample period nrf_qdec_sampleper_t.

__STATIC_INLINE void nrf_qdec_sampleper_set ( nrf_qdec_sampleper_t sample_per )

Function for setting value of the QDEC sampling period.

Parameters

[in] sample_per The sampling period.

__STATIC_INLINE uint32_t nrf_qdec_sampleper_to_value ( uint32_t sampleper )

Function for converting return value of the nrf_qdec_sampleper_reg_get() function to microseconds.

Parameters

[in] sampleper The sampling period.

Returns: Period in microseconds.

__STATIC_INLINE void nrf_qdec_shorts_disable ( uint32_t mask )

Function for clearing shortcuts of the QDEC by mask.

Parameters

[in] mask Mask of QDEC shortcuts to be cleared.

__STATIC_INLINE void nrf_qdec_shorts_enable ( uint32_t mask )

Function for setting QDEC shortcuts.

Parameters

[in] mask Mask of QDEC shortcuts to be set.

__STATIC_INLINE uint32_t* nrf_qdec_task_address_get ( nrf_qdec_task_t task )

Function for retrieving the address of a QDEC task register.

Parameters

[in] task QDEC task to get its address.

Returns: Address of the specified QDEC task.

__STATIC_INLINE void nrf_qdec_task_trigger ( nrf_qdec_task_t task )

Function for setting the specified QDEC task.

Parameters

[in] task QDEC task to be triggered.

Macros

Enumerations

Functions

Detailed Description

Enumeration Type Documentation

Function Documentation