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.

Modules
	Related Project(s)
	In this section you can find all the projects related to the Cyclic Redundancy Check Calculation Unit (CRCCU).

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().