vsf_dma_channel_cfg_t Struct Reference

dma configuration More...

#include <dma.h>

Data Fields
vsf_dma_channel_mode_t	mode
vsf_dma_isr_t	isr
vsf_dma_irq_mask_t	irq_mask
vsf_arch_prio_t	prio
uint8_t	src_request_idx
uint8_t	dst_request_idx
uint8_t	sync_reqcnt
uint8_t	sync_signal

Detailed Description

dma configuration

DMA channel configuration structure for transfer setup

Note

This structure contains all configuration needed for DMA transfer operations, including transfer mode, interrupt settings, and peripheral indices.

Field Documentation

mode

vsf_dma_channel_mode_t vsf_dma_channel_cfg_t::mode

DMA channel mode, including transfer direction, address increment mode, data width, burst length, priority, etc. Use VSF_DMA_XXX macros to configure (e.g. VSF_DMA_MEMORY_TO_PERIPHERAL | VSF_DMA_SRC_ADDR_INCREMENT | VSF_DMA_DST_WIDTH_BYTES_4)

isr

vsf_dma_isr_t vsf_dma_channel_cfg_t::isr

Interrupt service routine configuration, including handler function and target pointer

irq_mask

vsf_dma_irq_mask_t vsf_dma_channel_cfg_t::irq_mask

Interrupt mask, indicating which interrupts to enable (e.g. VSF_DMA_IRQ_MASK_CPL | VSF_DMA_IRQ_MASK_ERROR) Multiple interrupt types can be combined using bitwise OR operation

prio

vsf_arch_prio_t vsf_dma_channel_cfg_t::prio

Interrupt priority for this channel. Use vsf_arch_prio_invalid to use default priority from vsf_dma_cfg_t. Only effective when hardware supports per-channel or per-group interrupt priority configuration.

src_request_idx

uint8_t vsf_dma_channel_cfg_t::src_request_idx

DMA peripheral request signal index for source side This is the hardware-specific request signal ID used for DMA handshaking Only effective when source is a peripheral (ignored for memory source)

dst_request_idx

uint8_t vsf_dma_channel_cfg_t::dst_request_idx

DMA peripheral request signal index for destination side This is the hardware-specific request signal ID used for DMA handshaking Only effective when destination is a peripheral (ignored for memory destination)

sync_reqcnt

uint8_t vsf_dma_channel_cfg_t::sync_reqcnt

sync_signal

uint8_t vsf_dma_channel_cfg_t::sync_signal