vsf_dma_channel_hint_t Struct Reference

DMA channel hint structure for channel allocation. More...

#include <dma.h>

Data Fields
int8_t	channel
uint8_t	request_line

Detailed Description

DMA channel hint structure for channel allocation.

Note

This structure is used only during channel acquire phase to provide hints for channel allocation. It contains only information needed for channel selection.

Field Documentation

channel

int8_t vsf_dma_channel_hint_t::channel

Specify the DMA channel number. Use negative value (e.g., -1) for automatic allocation. (Some chips have fixed functionality configurations for DMA channels)

request_line

uint8_t vsf_dma_channel_hint_t::request_line

Peripheral request line number, specifying the peripheral request source using DMA service. (Some chips provide a mapping table between peripherals and request lines, refer to chip manual to select the correct request line number).