Cyclic Redundancy Check Calculation Unit (CRCCU)

Driver for the Cyclic Redundancy Check Calculation Unit.

It provides access to the main features of the CRCCU controller.

Functions
void	crccu_configure_descriptor (Crccu *p_crccu, uint32_t ul_crc_dscr_addr)
	Configure CRCCU descriptor. More...
void	crccu_configure_mode (Crccu *p_crccu, uint32_t ul_mode)
	Configure the CRCCU mode. More...
void	crccu_disable_dma (Crccu *p_crccu)
	Disable CRCCU. More...
void	crccu_disable_dma_interrupt (Crccu *p_crccu)
	Disable CRCCU DMA transfer interrupt. More...
void	crccu_disable_error_interrupt (Crccu *p_crccu)
	Disable cyclic redundancy check error interrupt. More...
void	crccu_enable_dma (Crccu *p_crccu)
	Start CRCCU. More...
void	crccu_enable_dma_interrupt (Crccu *p_crccu)
	Enable CRCCU DMA transfer interrupt. More...
void	crccu_enable_error_interrupt (Crccu *p_crccu)
	Enable cyclic redundancy check error interrupt. More...
uint32_t	crccu_get_dma_interrupt_mask (Crccu *p_crccu)
	Get DMA interrupt mask. More...
uint32_t	crccu_get_dma_interrupt_status (Crccu *p_crccu)
	Check if DMA buffer transfer has been terminated. More...
uint32_t	crccu_get_dma_status (Crccu *p_crccu)
	Check if DMA channel is enabled. More...
uint32_t	crccu_get_error_interrupt_mask (Crccu *p_crccu)
	Get check CRC error interrupt mask. More...
uint32_t	crccu_get_error_interrupt_status (Crccu *p_crccu)
	Check if there is a CRC error. More...
uint32_t	crccu_read_crc_value (Crccu *p_crccu)
	Read cyclic redundancy check value. More...
void	crccu_reset (Crccu *p_crccu)
	Reset CRCCU. More...

void crccu_configure_descriptor	(	Crccu *	p_crccu,
		uint32_t	ul_crc_dscr_addr
	)

Configure CRCCU descriptor.

Parameters

p_crccu	Pointer to a CRCCU instance.
ul_crc_dscr_addr	CRCCU descriptor address.

Referenced by compute_crc().

void crccu_configure_mode	(	Crccu *	p_crccu,
		uint32_t	ul_mode
	)

Configure the CRCCU mode.

Parameters

p_crccu	Pointer to a CRCCU instance.
ul_mode	CRC work mode.

Referenced by compute_crc().

void crccu_disable_dma

(

Crccu *

p_crccu

)

Disable CRCCU.

Parameters

p_crccu

Pointer to a CRCCU instance.

void crccu_disable_dma_interrupt

(

Crccu *

p_crccu

)

Disable CRCCU DMA transfer interrupt.

Parameters

p_crccu

Pointer to a CRCCU instance.

void crccu_disable_error_interrupt

(

Crccu *

p_crccu

)

Disable cyclic redundancy check error interrupt.

Parameters

p_crccu

Pointer to a CRCCU instance.

void crccu_enable_dma

(

Crccu *

p_crccu

)

Start CRCCU.

Note

To start the CRCCU, the user needs to set the CRC enable bit (ENABLE) in the CRCCU Mode Register (CRCCU_MR), and then configure it and finally set the DMA enable bit (DMAEN) in the CRCCU DMA Enable Register (CRCCU_DMA_EN).

The crccu_configure_descriptor() and crccu_configure_mode ()functions must be executed before calling this function.

Parameters

p_crccu

Pointer to a CRCCU instance.

Referenced by compute_crc().

void crccu_enable_dma_interrupt

(

Crccu *

p_crccu

)

Enable CRCCU DMA transfer interrupt.

Parameters

p_crccu

Pointer to a CRCCU instance.

void crccu_enable_error_interrupt

(

Crccu *

p_crccu

)

Enable cyclic redundancy check error interrupt.

Parameters

p_crccu

Pointer to a CRCCU instance.

uint32_t crccu_get_dma_interrupt_mask

(

Crccu *

p_crccu

)

Get DMA interrupt mask.

Parameters

p_crccu

Pointer to a CRCCU instance.

Returns

DMA interrupt mask.

uint32_t crccu_get_dma_interrupt_status

(

Crccu *

p_crccu

)

Check if DMA buffer transfer has been terminated.

Parameters

p_crccu

Pointer to a CRCCU instance.

Returns

DMA interrupt status.

uint32_t crccu_get_dma_status

(

Crccu *

p_crccu

)

Check if DMA channel is enabled.

Parameters

p_crccu

Pointer to a CRCCU instance.

Returns

CRCCU DMA status.

Referenced by compute_crc().

uint32_t crccu_get_error_interrupt_mask

(

Crccu *

p_crccu

)

Get check CRC error interrupt mask.

Parameters

p_crccu

Pointer to a CRCCU instance.

Returns

Error interrupt mask.

uint32_t crccu_get_error_interrupt_status

(

Crccu *

p_crccu

)

Check if there is a CRC error.

Parameters

p_crccu

Pointer to a CRCCU instance.

Returns

Error interrupt status.

uint32_t crccu_read_crc_value

(

Crccu *

p_crccu

)

Read cyclic redundancy check value.

Parameters

p_crccu

Pointer to a CRCCU instance.

Returns

CRC value.

Referenced by compute_crc().

void crccu_reset

(

Crccu *

p_crccu

)

Reset CRCCU.

Referenced by compute_crc().