dma_template_config_t Struct Reference

DMA template configuration (used with 1D transfers only) More...

#include <dma.h>

Data Fields
bool	enable_template
uint8_t	src_template_size
uint8_t	dest_template_size
uint32_t	src_template
uint32_t	dest_template

Detailed Description

DMA template configuration (used with 1D transfers only)

Templated transfers allow 1D transfers to selectively copy data using predefined bit-mask patterns. The patterns define which addresses in a repetitive sequence should be transferred.

Key features:

• Only works with 1D transfers
• Uses single transfers (no burst combining)
• Lowest bit of template registers is fixed to 1 (no initial gaps)
• Template size = template_size_field + 1 (0 = disabled)
• Source and destination templates can be configured independently

Hardware registers:

• TMPLTCFG: Template configuration
• SRCTMPLT: Source template bit-mask pattern
• DESTMPLT: Destination template bit-mask pattern

Note: Driver automatically builds TMPLTCFG register from size fields

Field Documentation

enable_template

bool dma_template_config_t::enable_template

Enable template functionality

src_template_size

uint8_t dma_template_config_t::src_template_size

Source template size (0 = disabled, max 31)

dest_template_size

uint8_t dma_template_config_t::dest_template_size

Destination template size (0 = disabled, max 31)

src_template

uint32_t dma_template_config_t::src_template

Source template bit-mask (SRCTMPLT register)

dest_template

uint32_t dma_template_config_t::dest_template

Destination template bit-mask (DESTMPLT register)