Hardware access layer for managing the 16 MHz Frequency Locked Loop (FLL16M) peripheral. More...

Data Structures
struct	nrf_fll16m_clockstatus_t
	Clock status. More...

struct	nrf_fll16m_clockctrl_t
	Clock control. More...

struct	nrf_fll16m_dithering_t
	Clock dithering configuration. More...

struct	nrf_fll16m_sleep_t
	Sleep configuration. More...

struct	nrf_fll16m_refclock_t
	Reference clock configuration. More...

Enumerations
enum	nrf_fll16m_task_t { NRF_FLL16M_TASK_ONESHOTLOCK = offsetof(NRF_FLL16M_Type, TASKS_ONESHOTLOCK) , NRF_FLL16M_TASK_SLEEP = offsetof(NRF_FLL16M_Type, TASKS_SLEEP) , NRF_FLL16M_TASK_FREQMEAS = offsetof(NRF_FLL16M_Type, TASKS_FREQMEAS) , NRF_FLL16M_TASK_FREQCHANGE = offsetof(NRF_FLL16M_Type, TASKS_FREQCHANGE) }
	FLL16M tasks. More...

enum	nrf_fll16m_event_t { NRF_FLL16M_EVENT_FREQMDONE = offsetof(NRF_FLL16M_Type, EVENTS_FREQMDONE) , NRF_FLL16M_EVENT_FREQMERROR = offsetof(NRF_FLL16M_Type, EVENTS_FREQMERROR) , NRF_FLL16M_EVENT_FREQCHANGED = offsetof(NRF_FLL16M_Type, EVENTS_FREQCHANGED) }
	FLL16M events. More...

enum	nrf_fll16m_int_mask_t { NRF_FLL16M_INT_FREQMDONE_MASK = FLL16M_INTENSET_FREQMDONE_Msk , NRF_FLL16M_INT_FREQMERROR_MASK = FLL16M_INTENSET_FREQMERROR_Msk , NRF_FLL16M_INT_FREQCHANGED_MASK = FLL16M_INTENSET_FREQCHANGED_Msk }
	FLL16M interrupts. More...

enum	nrf_fll16m_mode_t { NRF_FLL16M_MODE_AUTO = FLL16M_CLOCKSTATUS_MODE_Auto , NRF_FLL16M_MODE_OPENLOOP = FLL16M_CLOCKSTATUS_MODE_OpenLoop , NRF_FLL16M_MODE_CLOSEDLOOP = FLL16M_CLOCKSTATUS_MODE_ClosedLoop , NRF_FLL16M_MODE_REFRESH = FLL16M_CLOCKSTATUS_MODE_Refresh , NRF_FLL16M_MODE_BYPASS = FLL16M_CLOCKSTATUS_MODE_Bypass }
	FLL16M operating mode. More...

enum	nrf_fll16m_clocksel_t { NRF_FLL16M_CLOCKSEL_DCO16M = FLL16M_CLOCKSTATUS_CLOCKSEL_DCO16M , NRF_FLL16M_CLOCKSEL_HFXO = FLL16M_CLOCKSTATUS_CLOCKSEL_HFXO }
	Clock selection. More...

enum	nrf_fll16m_freqmeas_clocksel_t { NRF_FLL16M_FREQMEAS_CLOCKSEL_DCO16M = FLL16M_FREQM_CLOCKSEL_CLOCKSEL_DCO16M , NRF_FLL16M_FREQMEAS_CLOCKSEL_CKSW16M = FLL16M_FREQM_CLOCKSEL_CLOCKSEL_CKSW16M , NRF_FLL16M_FREQMEAS_CLOCKSEL_HFXOBY2 = FLL16M_FREQM_CLOCKSEL_CLOCKSEL_HFXOBy2 , NRF_FLL16M_FREQMEAS_CLOCKSEL_CKSW16MTESTOSC = FLL16M_FREQM_CLOCKSEL_CLOCKSEL_CKSW16MTestOsc }
	Clock selection for the frequency measurement. More...

enum	nrf_fll16m_refclock_select_t { NRF_FLL16M_REFCLOCK_SELECT_CLOCK32KHZ = FLL16M_CLOCKCTRL_REFCLOCK_SELREF_Clock32Ki , NRF_FLL16M_REFCLOCK_SELECT_CLOCK16MHZ = FLL16M_CLOCKCTRL_REFCLOCK_SELREF_Clock16M }
	Selection for the reference clock signal in software controlled mode. More...

Functions
NRF_STATIC_INLINE uint32_t	nrf_fll16m_task_address_get (NRF_FLL16M_Type const *p_reg, nrf_fll16m_task_t task)
	Function for retrieving the address of the specified task.

NRF_STATIC_INLINE void	nrf_fll16m_task_trigger (NRF_FLL16M_Type *p_reg, nrf_fll16m_task_t task)
	Function for triggering the specified task.

NRF_STATIC_INLINE uint32_t	nrf_fll16m_event_address_get (NRF_FLL16M_Type const *p_reg, nrf_fll16m_event_t event)
	Function for retrieving the address of the specified event.

NRF_STATIC_INLINE void	nrf_fll16m_event_clear (NRF_FLL16M_Type *p_reg, nrf_fll16m_event_t event)
	Function for clearing the specified event.

NRF_STATIC_INLINE bool	nrf_fll16m_event_check (NRF_FLL16M_Type const *p_reg, nrf_fll16m_event_t event)
	Function for retrieving the state of the specified event.

NRF_STATIC_INLINE void	nrf_fll16m_int_enable (NRF_FLL16M_Type *p_reg, uint32_t mask)
	Function for enabling the specified interrupt.

NRF_STATIC_INLINE void	nrf_fll16m_int_disable (NRF_FLL16M_Type *p_reg, uint32_t mask)
	Function for disabling the specified interrupt.

NRF_STATIC_INLINE uint32_t	nrf_fll16m_int_enable_check (NRF_FLL16M_Type const *p_reg, uint32_t mask)
	Function for checking if the specified interrupts are enabled.

NRF_STATIC_INLINE uint32_t	nrf_fll16m_int_pending_get (NRF_FLL16M_Type const *p_reg)
	Function for retrieving the state of pending interrupts.

NRF_STATIC_INLINE bool	nrf_fll16m_powerup_ready_check (NRF_FLL16M_Type const *p_reg)
	Function for checking power up status.

NRF_STATIC_INLINE void	nrf_fll16m_clockstatus_get (NRF_FLL16M_Type const p_reg, nrf_fll16m_clockstatus_t p_status)
	Function for getting the clock status.

NRF_STATIC_INLINE bool	nrf_fll16m_freqmeas_done_check (NRF_FLL16M_Type const *p_reg)
	Function for checking the frequency measurement completion status.

NRF_STATIC_INLINE bool	nrf_fll16m_freqmeas_error_check (NRF_FLL16M_Type const *p_reg)
	Function for checking the frequency measurement error status.

NRF_STATIC_INLINE uint16_t	nrf_fll16m_freqmeas_value_get (NRF_FLL16M_Type const *p_reg)
	Function for getting the frequency measurement.

NRF_STATIC_INLINE nrf_fll16m_freqmeas_clocksel_t	nrf_fll16m_freqmeas_clocksel_get (NRF_FLL16M_Type const *p_reg)
	Function for getting clock selection for the frequency measurement.

NRF_STATIC_INLINE void	nrf_fll16m_freqmeas_clocksel_set (NRF_FLL16M_Type *p_reg, nrf_fll16m_freqmeas_clocksel_t clocksel)
	Function for selecting clock for the frequency measurement.

NRF_STATIC_INLINE void	nrf_fll16m_clkctrl_mode_set (NRF_FLL16M_Type p_reg, nrf_fll16m_clockctrl_t const p_config)
	Function for setting clock control.

NRF_STATIC_INLINE void	nrf_fll16m_clctrl_dithering_set (NRF_FLL16M_Type p_reg, nrf_fll16m_dithering_t const p_config)
	Function for setting clock dithering configuration.

NRF_STATIC_INLINE void	nrf_fll16m_clctrl_sleep_set (NRF_FLL16M_Type p_reg, nrf_fll16m_sleep_t const p_config)
	Function for setting sleep configuration.

NRF_STATIC_INLINE void	nrf_fll16m_clctrl_retain_set (NRF_FLL16M_Type *p_reg, bool retain)
	Function for setting the retention of the fine trim control.

NRF_STATIC_INLINE void	nrf_fll16m_clctrl_override_locked_set (NRF_FLL16M_Type *p_reg, bool override)
	Function for setting the override of the LOCKED signal.

NRF_STATIC_INLINE void	nrf_fll16m_clctrl_refclock_set (NRF_FLL16M_Type p_reg, nrf_fll16m_refclock_t const p_config)
	Function for setting reference clock configuration.

NRF_STATIC_INLINE void	nrf_fll16m_clctrl_default_slope_set (NRF_FLL16M_Type *p_reg, uint16_t slope)
	Function for setting default slope value for FLL16M.

NRF_STATIC_INLINE void	nrf_fll16m_clctrl_freq_meas_limit_set (NRF_FLL16M_Type *p_reg, uint8_t limit)
	Function for setting frequency measurement limit.

Detailed Description

Hardware access layer for managing the 16 MHz Frequency Locked Loop (FLL16M) peripheral.

Enumeration Type Documentation

◆ nrf_fll16m_clocksel_t

enum nrf_fll16m_clocksel_t

Clock selection.

Enumerator
NRF_FLL16M_CLOCKSEL_DCO16M	Clock from DCO16M selected.
NRF_FLL16M_CLOCKSEL_HFXO	Clock from HFXO selected.

◆ nrf_fll16m_event_t

enum nrf_fll16m_event_t

FLL16M events.

Enumerator
NRF_FLL16M_EVENT_FREQMDONE	Frequency measurement done.
NRF_FLL16M_EVENT_FREQMERROR	Frequency measurement error.
NRF_FLL16M_EVENT_FREQCHANGED	Frequency change done.

◆ nrf_fll16m_freqmeas_clocksel_t

enum nrf_fll16m_freqmeas_clocksel_t

Clock selection for the frequency measurement.

Enumerator
NRF_FLL16M_FREQMEAS_CLOCKSEL_DCO16M	Clock from DCO16M selected.
NRF_FLL16M_FREQMEAS_CLOCKSEL_CKSW16M	Clock from CKSW16M selected.
NRF_FLL16M_FREQMEAS_CLOCKSEL_HFXOBY2	Clock from 32MHz HFXO divided by 2 selected.
NRF_FLL16M_FREQMEAS_CLOCKSEL_CKSW16MTESTOSC	Clock from CKSW16M TESTOSC selected.

◆ nrf_fll16m_int_mask_t

enum nrf_fll16m_int_mask_t

FLL16M interrupts.

Enumerator
NRF_FLL16M_INT_FREQMDONE_MASK	Interrupt on FREQMDONE event.
NRF_FLL16M_INT_FREQMERROR_MASK	Interrupt on FREQMERROR event.
NRF_FLL16M_INT_FREQCHANGED_MASK	Interrupt on FREQCHANGED event.

◆ nrf_fll16m_mode_t

enum nrf_fll16m_mode_t

FLL16M operating mode.

Enumerator
NRF_FLL16M_MODE_AUTO	The PCGC controls the mode automatically.
NRF_FLL16M_MODE_OPENLOOP	Open loop mode.
NRF_FLL16M_MODE_CLOSEDLOOP	Closed loop mode.
NRF_FLL16M_MODE_REFRESH	Refresh mode.
NRF_FLL16M_MODE_BYPASS	Bypass mode.

◆ nrf_fll16m_refclock_select_t

enum nrf_fll16m_refclock_select_t

Selection for the reference clock signal in software controlled mode.

Enumerator
NRF_FLL16M_REFCLOCK_SELECT_CLOCK32KHZ	The 32 Ki clock selection.
NRF_FLL16M_REFCLOCK_SELECT_CLOCK16MHZ	The 16 MHz clock selection.

◆ nrf_fll16m_task_t

enum nrf_fll16m_task_t

FLL16M tasks.

Enumerator
NRF_FLL16M_TASK_ONESHOTLOCK	Start one-shot locking process in Refresh mode.
NRF_FLL16M_TASK_SLEEP	Enter into FLL16M sleep mode.
NRF_FLL16M_TASK_FREQMEAS	Start frequency measurement in software-controlled mode.
NRF_FLL16M_TASK_FREQCHANGE	Frequency measurement done.

Function Documentation

◆ nrf_fll16m_clctrl_default_slope_set()

NRF_STATIC_INLINE void nrf_fll16m_clctrl_default_slope_set	(	NRF_FLL16M_Type *	p_reg,
		uint16_t	slope
	)

Function for setting default slope value for FLL16M.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	slope	Slope value.

◆ nrf_fll16m_clctrl_dithering_set()

NRF_STATIC_INLINE void nrf_fll16m_clctrl_dithering_set	(	NRF_FLL16M_Type *	p_reg,
		nrf_fll16m_dithering_t const *	p_config
	)

Function for setting clock dithering configuration.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	p_config	Configuration parameters.

◆ nrf_fll16m_clctrl_freq_meas_limit_set()

NRF_STATIC_INLINE void nrf_fll16m_clctrl_freq_meas_limit_set	(	NRF_FLL16M_Type *	p_reg,
		uint8_t	limit
	)

Function for setting frequency measurement limit.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	limit	Determines how many frequency jumps the FLL16M will do before reaching locked state where the fine trim is changed by only +/-1.

◆ nrf_fll16m_clctrl_override_locked_set()

NRF_STATIC_INLINE void nrf_fll16m_clctrl_override_locked_set	(	NRF_FLL16M_Type *	p_reg,
		bool	override
	)

Function for setting the override of the LOCKED signal.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	override	True if the override is to be enabled, false otherwise.

◆ nrf_fll16m_clctrl_refclock_set()

NRF_STATIC_INLINE void nrf_fll16m_clctrl_refclock_set	(	NRF_FLL16M_Type *	p_reg,
		nrf_fll16m_refclock_t const *	p_config
	)

Function for setting reference clock configuration.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	p_config	Configuration parameters.

◆ nrf_fll16m_clctrl_retain_set()

NRF_STATIC_INLINE void nrf_fll16m_clctrl_retain_set	(	NRF_FLL16M_Type *	p_reg,
		bool	retain
	)

Function for setting the retention of the fine trim control.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	retain	True if the fine trim control is to be retained when FLL16M goes to open-loop mode, false otherwise.

◆ nrf_fll16m_clctrl_sleep_set()

NRF_STATIC_INLINE void nrf_fll16m_clctrl_sleep_set	(	NRF_FLL16M_Type *	p_reg,
		nrf_fll16m_sleep_t const *	p_config
	)

Function for setting sleep configuration.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	p_config	Configuration parameters.

◆ nrf_fll16m_clkctrl_mode_set()

NRF_STATIC_INLINE void nrf_fll16m_clkctrl_mode_set	(	NRF_FLL16M_Type *	p_reg,
		nrf_fll16m_clockctrl_t const *	p_config
	)

Function for setting clock control.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	p_config	Configuration parameters.

◆ nrf_fll16m_clockstatus_get()

NRF_STATIC_INLINE void nrf_fll16m_clockstatus_get	(	NRF_FLL16M_Type const *	p_reg,
		nrf_fll16m_clockstatus_t *	p_status
	)

Function for getting the clock status.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[out]	p_status	Pointer to the structure to be filled with clock status.

◆ nrf_fll16m_event_address_get()

NRF_STATIC_INLINE uint32_t nrf_fll16m_event_address_get	(	NRF_FLL16M_Type const *	p_reg,
		nrf_fll16m_event_t	event
	)

Function for retrieving the address of the specified event.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	event	FLL16M event.

Returns: Address of the specified event register.

◆ nrf_fll16m_event_check()

NRF_STATIC_INLINE bool nrf_fll16m_event_check	(	NRF_FLL16M_Type const *	p_reg,
		nrf_fll16m_event_t	event
	)

Function for retrieving the state of the specified event.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	event	Event to be checked.

Return values

true	The event has been generated.
false	The event has not been generated.

◆ nrf_fll16m_event_clear()

NRF_STATIC_INLINE void nrf_fll16m_event_clear	(	NRF_FLL16M_Type *	p_reg,
		nrf_fll16m_event_t	event
	)

Function for clearing the specified event.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	event	Event to clear.

◆ nrf_fll16m_freqmeas_clocksel_get()

NRF_STATIC_INLINE nrf_fll16m_freqmeas_clocksel_t nrf_fll16m_freqmeas_clocksel_get ( NRF_FLL16M_Type const * p_reg )

Function for getting clock selection for the frequency measurement.

Parameters

[in] p_reg Pointer to the structure of registers of the peripheral.

Returns: Enumerated type with clock selection data.

◆ nrf_fll16m_freqmeas_clocksel_set()

NRF_STATIC_INLINE void nrf_fll16m_freqmeas_clocksel_set	(	NRF_FLL16M_Type *	p_reg,
		nrf_fll16m_freqmeas_clocksel_t	clocksel
	)

Function for selecting clock for the frequency measurement.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	clocksel	Clock selection.

◆ nrf_fll16m_freqmeas_done_check()

NRF_STATIC_INLINE bool nrf_fll16m_freqmeas_done_check ( NRF_FLL16M_Type const * p_reg )

Function for checking the frequency measurement completion status.

Parameters

[in] p_reg Pointer to the structure of registers of the peripheral.

Return values

true	Frequency measurement is completed.
false	Frequency measurement is in progress.

◆ nrf_fll16m_freqmeas_error_check()

NRF_STATIC_INLINE bool nrf_fll16m_freqmeas_error_check ( NRF_FLL16M_Type const * p_reg )

Function for checking the frequency measurement error status.

Parameters

[in] p_reg Pointer to the structure of registers of the peripheral.

Return values

true	Frequency exceeded the accuracy 0.5% in closed loop mode.
false	Frequency stayed within accuracy 0.5% in closed loop mode.

◆ nrf_fll16m_freqmeas_value_get()

NRF_STATIC_INLINE uint16_t nrf_fll16m_freqmeas_value_get ( NRF_FLL16M_Type const * p_reg )

Function for getting the frequency measurement.

Parameters

[in] p_reg Pointer to the structure of registers of the peripheral.

Returns: Last frequency measurement value (DCO16M clock cycles during two 32Ki cycles).

◆ nrf_fll16m_int_disable()

NRF_STATIC_INLINE void nrf_fll16m_int_disable	(	NRF_FLL16M_Type *	p_reg,
		uint32_t	mask
	)

Function for disabling the specified interrupt.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	mask	Mask of interrupts to be disabled. Use nrf_fll16m_int_mask_t values for bit masking.

◆ nrf_fll16m_int_enable()

NRF_STATIC_INLINE void nrf_fll16m_int_enable	(	NRF_FLL16M_Type *	p_reg,
		uint32_t	mask
	)

Function for enabling the specified interrupt.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	mask	Mask of interrupts to be enabled. Use nrf_fll16m_int_mask_t values for bit masking.

◆ nrf_fll16m_int_enable_check()

NRF_STATIC_INLINE uint32_t nrf_fll16m_int_enable_check	(	NRF_FLL16M_Type const *	p_reg,
		uint32_t	mask
	)

Function for checking if the specified interrupts are enabled.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	mask	Mask of interrupts to be checked. Use nrf_fll16m_int_mask_t values for bit masking.

Returns: Mask of enabled interrupts.

◆ nrf_fll16m_int_pending_get()

NRF_STATIC_INLINE uint32_t nrf_fll16m_int_pending_get ( NRF_FLL16M_Type const * p_reg )

Function for retrieving the state of pending interrupts.

States of pending interrupt are saved as a bitmask. One set at particular position means that interrupt for event is pending.

Parameters

[in] p_reg Pointer to the structure of registers of the peripheral.

Returns: Bitmask with information about pending interrupts. Use nrf_fll16m_int_mask_t values for bit masking.

◆ nrf_fll16m_powerup_ready_check()

NRF_STATIC_INLINE bool nrf_fll16m_powerup_ready_check ( NRF_FLL16M_Type const * p_reg )

Function for checking power up status.

Parameters

[in] p_reg Pointer to the structure of registers of the peripheral.

Returns: Power up status.

◆ nrf_fll16m_task_address_get()

NRF_STATIC_INLINE uint32_t nrf_fll16m_task_address_get	(	NRF_FLL16M_Type const *	p_reg,
		nrf_fll16m_task_t	task
	)

Function for retrieving the address of the specified task.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	task	FLL16M Task.

Returns: Address of the requested task register.

◆ nrf_fll16m_task_trigger()

NRF_STATIC_INLINE void nrf_fll16m_task_trigger	(	NRF_FLL16M_Type *	p_reg,
		nrf_fll16m_task_t	task
	)

Function for triggering the specified task.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	task	Task to be activated.

Data Structures

Enumerations

Functions

Detailed Description

Enumeration Type Documentation

◆ nrf_fll16m_clocksel_t

◆ nrf_fll16m_event_t

◆ nrf_fll16m_freqmeas_clocksel_t

◆ nrf_fll16m_int_mask_t

◆ nrf_fll16m_mode_t

◆ nrf_fll16m_refclock_select_t

◆ nrf_fll16m_task_t

Function Documentation

◆ nrf_fll16m_clctrl_default_slope_set()

◆ nrf_fll16m_clctrl_dithering_set()

◆ nrf_fll16m_clctrl_freq_meas_limit_set()

◆ nrf_fll16m_clctrl_override_locked_set()

◆ nrf_fll16m_clctrl_refclock_set()

◆ nrf_fll16m_clctrl_retain_set()

◆ nrf_fll16m_clctrl_sleep_set()

◆ nrf_fll16m_clkctrl_mode_set()

◆ nrf_fll16m_clockstatus_get()

◆ nrf_fll16m_event_address_get()

◆ nrf_fll16m_event_check()

◆ nrf_fll16m_event_clear()

◆ nrf_fll16m_freqmeas_clocksel_get()

◆ nrf_fll16m_freqmeas_clocksel_set()

◆ nrf_fll16m_freqmeas_done_check()

◆ nrf_fll16m_freqmeas_error_check()

◆ nrf_fll16m_freqmeas_value_get()

◆ nrf_fll16m_int_disable()

◆ nrf_fll16m_int_enable()

◆ nrf_fll16m_int_enable_check()

◆ nrf_fll16m_int_pending_get()

◆ nrf_fll16m_powerup_ready_check()

◆ nrf_fll16m_task_address_get()

◆ nrf_fll16m_task_trigger()