dma_status Struct Reference

DMA runtime status structure. More...

#include <dma.h>

Data Fields
bool	busy
	Is the current DMA transfer busy or idle.
enum dma_channel_direction	dir
	Direction for the transfer.
uint32_t	pending_length
	Pending length to be transferred in bytes, HW specific.
uint32_t	free
	Available buffers space, HW specific.
uint32_t	write_position
	Write position in circular DMA buffer, HW specific.
uint32_t	read_position
	Read position in circular DMA buffer, HW specific.
uint64_t	total_copied
	Total copied, HW specific.

Detailed Description

DMA runtime status structure.

Field Documentation

busy

bool dma_status::busy

Is the current DMA transfer busy or idle.

dir

enum dma_channel_direction dma_status::dir

Direction for the transfer.

free

uint32_t dma_status::free

Available buffers space, HW specific.

pending_length

uint32_t dma_status::pending_length

Pending length to be transferred in bytes, HW specific.

read_position

uint32_t dma_status::read_position

Read position in circular DMA buffer, HW specific.

total_copied

uint64_t dma_status::total_copied

Total copied, HW specific.

write_position

uint32_t dma_status::write_position

Write position in circular DMA buffer, HW specific.

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The documentation for this struct was generated from the following file:

• include/zephyr/drivers/dma.h