Description

This structure holds initialization values for the DMAC ping/pong descriptor.

It contains descriptor configuration elements and is pre-initialized by user. It passed as a parameter to the Cy_DMAC_Descriptor_Init().

Data Fields
void volatile const *	srcAddress
	The source address of the transfer. More...

void volatile *	dstAddress
	The destination address of the transfer. More...

uint32_t	dataCount
	The natural number of data elements to transfer, for example, "1" means one data element is transferred. More...

cy_en_dmac_data_size_t	dataSize
	The data size. More...

cy_en_dmac_transfer_size_t	srcTransferSize
	The source transfer size. More...

bool	srcAddrIncrement
	Increment the source address (by value defined by srcTransferSize) after each transfer. More...

cy_en_dmac_transfer_size_t	dstTransferSize
	The destination transfer size. More...

bool	dstAddrIncrement
	Increment the destination address (by value defined by dstTransferSize) after each transfer.

cy_en_dmac_retrigger_t	retrigger
	Specifies whether the DMA controller should wait for the input trigger to be deactivated. More...

bool	cpltState
	Invalidate the descriptor on completion. More...

bool	interrupt
	Set an interrupt on descriptor completion. More...

bool	preemptable
	The transfer is preemptable. More...

bool	flipping
	Flip the active channel descriptor after completion. More...

cy_en_dmac_trigger_type_t	triggerType
	Sets what type of transfer is triggered. More...

Field Documentation

◆ srcAddress

void volatile const* cy_stc_dmac_descriptor_config_t::srcAddress

The source address of the transfer.

◆ dstAddress

void volatile* cy_stc_dmac_descriptor_config_t::dstAddress

The destination address of the transfer.

◆ dataCount

uint32_t cy_stc_dmac_descriptor_config_t::dataCount

The natural number of data elements to transfer, for example, "1" means one data element is transferred.

The valid range is 1...65536.

◆ dataSize

cy_en_dmac_data_size_t cy_stc_dmac_descriptor_config_t::dataSize

The data size.

◆ srcTransferSize

cy_en_dmac_transfer_size_t cy_stc_dmac_descriptor_config_t::srcTransferSize

The source transfer size.

◆ srcAddrIncrement

bool cy_stc_dmac_descriptor_config_t::srcAddrIncrement

Increment the source address (by value defined by srcTransferSize) after each transfer.

◆ dstTransferSize

cy_en_dmac_transfer_size_t cy_stc_dmac_descriptor_config_t::dstTransferSize

The destination transfer size.

◆ retrigger

cy_en_dmac_retrigger_t cy_stc_dmac_descriptor_config_t::retrigger

Specifies whether the DMA controller should wait for the input trigger to be deactivated.

◆ cpltState

bool cy_stc_dmac_descriptor_config_t::cpltState

Invalidate the descriptor on completion.

◆ interrupt

bool cy_stc_dmac_descriptor_config_t::interrupt

Set an interrupt on descriptor completion.

◆ preemptable

bool cy_stc_dmac_descriptor_config_t::preemptable

The transfer is preemptable.

◆ flipping

bool cy_stc_dmac_descriptor_config_t::flipping

Flip the active channel descriptor after completion.

◆ triggerType

cy_en_dmac_trigger_type_t cy_stc_dmac_descriptor_config_t::triggerType

Sets what type of transfer is triggered.

See cy_en_dmac_trigger_type_t.