FPU HAL

group nrf_fpu_hal

Hardware access layer (HAL) for managing the Floating Point Unit configuration.

Enums

enum nrf_fpu_event_t

FPU events.

Values:

enumerator NRF_FPU_EVENT_INVALIDOPERATION

An FPUIOC exception triggered by an invalid operation has occurred in the FPU.

enumerator NRF_FPU_EVENT_DIVIDEBYZERO

An FPUDZC exception triggered by a floating-point divide-by-zero operation has occurred in the FPU.

enumerator NRF_FPU_EVENT_OVERFLOW

An FPUOFC exception triggered by a floating-point overflow has occurred in the FPU.

enumerator NRF_FPU_EVENT_UNDERFLOW

An FPUUFC exception triggered by a floating-point underflow has occurred in the FPU.

enumerator NRF_FPU_EVENT_INEXACT

An FPUIXC exception triggered by an inexact floating-point operation has occurred in the FPU.

enumerator NRF_FPU_EVENT_DENORMALINPUT

An FPUIDC exception triggered by a denormal floating-point input has occurred in the FPU.

enum nrf_fpu_int_mask_t

FPU interrupts.

Values:

enumerator NRF_FPU_INT_INVALIDOPERATION

Interrupt on event INVALIDOPERATION.

enumerator NRF_FPU_INT_DIVIDEBYZERO

Interrupt on event DIVIDEBYZERO.

enumerator NRF_FPU_INT_OVERFLOW

Interrupt on event OVERFLOW.

enumerator NRF_FPU_INT_UNDERFLOW

Interrupt on event UNDERFLOW.

enumerator NRF_FPU_INT_INEXACT

Interrupt on event INEXACT.

enumerator NRF_FPU_INT_DENORMALINPUT

Interrupt on event DENORMALINPUT.

Functions

NRF_STATIC_INLINE void nrf_fpu_event_clear(NRF_FPU_Type *p_reg, nrf_fpu_event_t event)

Function for clearing the specified FPU event.

Parameters:

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

  • event – [in] Event to be cleared.

NRF_STATIC_INLINE bool nrf_fpu_event_check(NRF_FPU_Type const *p_reg, nrf_fpu_event_t event)

Function for retrieving the state of the FPU event.

Parameters:

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

  • event – [in] Event to be checked.

Return values:

  • true – The event has been generated.

  • false – The event has not been generated.

NRF_STATIC_INLINE void nrf_fpu_int_enable(NRF_FPU_Type *p_reg, uint32_t mask)

Function for enabling specified interrupts.

Parameters:

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

  • mask – [in] Mask of interrupts to be enabled. Use nrf_fpu_int_mask_t values for bit masking.

NRF_STATIC_INLINE void nrf_fpu_int_disable(NRF_FPU_Type *p_reg, uint32_t mask)

Function for disabling specified interrupts.

Parameters:

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

  • mask – [in] Mask of interrupts to be disabled. Use nrf_fpu_int_mask_t values for bit masking.

NRF_STATIC_INLINE uint32_t nrf_fpu_int_enable_check(NRF_FPU_Type const *p_reg, uint32_t mask)

Function for checking if the specified interrupts are enabled.

Parameters:

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

  • mask – [in] Mask of interrupts to be checked. Use nrf_fpu_int_mask_t values for bit masking.

Returns:

Mask of enabled interrupts.