OSCILLATORS HAL

Hardware access layer for managing the OSCILLATORS peripheral. More...

Enumerations
enum	nrf_oscillators_lfxo_cap_t {   NRF_OSCILLATORS_LFXO_CAP_EXTERNAL = OSCILLATORS_XOSC32KI_INTCAP_INTCAP_External,   NRF_OSCILLATORS_LFXO_CAP_6PF = OSCILLATORS_XOSC32KI_INTCAP_INTCAP_C6PF,   NRF_OSCILLATORS_LFXO_CAP_7PF = OSCILLATORS_XOSC32KI_INTCAP_INTCAP_C7PF,   NRF_OSCILLATORS_LFXO_CAP_9PF = OSCILLATORS_XOSC32KI_INTCAP_INTCAP_C9PF }
	Capacitors configuration for LFXO. More...

Functions
NRF_STATIC_INLINE void	nrf_oscillators_lfxo_bypass_set (NRF_OSCILLATORS_Type *p_reg, bool enable)
	Function for enabling or disabling the bypass of LFXO with external clock source. More...
NRF_STATIC_INLINE void	nrf_oscillators_lfxo_cap_set (NRF_OSCILLATORS_Type *p_reg, nrf_oscillators_lfxo_cap_t cap)
	Function for configuring the internal capacitors of LFXO. More...
NRF_STATIC_INLINE void	nrf_oscillators_hfxo_cap_set (NRF_OSCILLATORS_Type *p_reg, bool enable, uint32_t cap_value)
	Function for configuring the internal capacitors of HXFO. More...

Detailed Description

Hardware access layer for managing the OSCILLATORS peripheral.

Enumeration Type Documentation

nrf_oscillators_lfxo_cap_t

enum nrf_oscillators_lfxo_cap_t

Capacitors configuration for LFXO.

Enumerator
NRF_OSCILLATORS_LFXO_CAP_EXTERNAL	Use external capacitors.
NRF_OSCILLATORS_LFXO_CAP_6PF	Use 6 pF internal capacitors.
NRF_OSCILLATORS_LFXO_CAP_7PF	Use 7 pF internal capacitors.
NRF_OSCILLATORS_LFXO_CAP_9PF	Use 9 pF internal capacitors.

Function Documentation

nrf_oscillators_hfxo_cap_set()

NRF_STATIC_INLINE void nrf_oscillators_hfxo_cap_set	(	NRF_OSCILLATORS_Type *	p_reg,
		bool	enable,
		uint32_t	cap_value
	)

Function for configuring the internal capacitors of HXFO.

The capacitance of internal capacitors ranges from 7 pF to 20 pF in 0.5 pF steps. To calculate the correct cap_value, use the following equation: CAPVALUE = (1+FICR->XOSC32MTRIM.SLOPE/16) * (CAPACITANCE*2-14) + FICR->XOSC32MTRIM.OFFSET

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	enable	True if internal capacitors are to be enabled, false otherwise.
[in]	cap_value	Value representing capacitance, calculated using provided equation. Ignored when internal capacitors are disabled.

nrf_oscillators_lfxo_bypass_set()

NRF_STATIC_INLINE void nrf_oscillators_lfxo_bypass_set	(	NRF_OSCILLATORS_Type *	p_reg,
		bool	enable
	)

Function for enabling or disabling the bypass of LFXO with external clock source.

Parameters

[in]	p_reg	Pointer to the structure of registers of the peripheral.
[in]	enable	True if bypass is to be enabled (use with rail-to-rail external source). False if bypass is to be disabled (use with xtal or low-swing external source).

nrf_oscillators_lfxo_cap_set()

NRF_STATIC_INLINE void nrf_oscillators_lfxo_cap_set	(	NRF_OSCILLATORS_Type *	p_reg,
		nrf_oscillators_lfxo_cap_t	cap
	)

Function for configuring the internal capacitors of LFXO.

Parameters

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