dma_ctrl Struct Reference

dma_ctrl specifies the DMA channel settings which control the DMA channel transfer mode. More...

#include <mhal_dma.h>

Data Fields
enum dma_dir	dir
	Transfer direction, only for HALF-SIZE DMA and VFF DMA. More...
u8	wrap_en
	Flag of transfer address-wrapping feature. More...
u8	wrap_side
	The side for using address-wrapping: source or destination, and only one side can activate address-wrapping feature at a time. More...
u8	int_en
	Enable transfer completion interrupt for FULL-SIZE DMA and HALF-SIZE DMA, or enable FIFO data interrupt for VFF DMA.
u8	timeout_int_en
	Enable FIFO data timeout interrupt for VFF DMA.
u8	half_int_en
	Enable half transfer completion interrupt for HALF-SIZE DMA.
enum dma_burst_type	burst_type
	Burst-type, only for FULL-SIZE DMA and HALF-SIZE DMA. More...
u8	bw_transfer_en
	Word to byte or byte to word transfer flag, only for HALF-SIZE DMA.
u8	dreq
	Throttle and handshake control for DMA Transfer between DMA and Peripheral.
u8	dst_inc_en
	Destination addresses automatically increase after every transfer, only for FULL-SIZE DMA and HALF-SIZE DMA.
u8	src_inc_en
	Source addresses automatically increase after every transfer, only for FULL-SIZE DMA and HALF-SIZE DMA.
enum dma_transize	transize
	Data size within the confine of a bus cycle per transfer. More...

Detailed Description

dma_ctrl specifies the DMA channel settings which control the DMA channel transfer mode.

Users fill the field of dma_ctrl according to the DMA channel type and transfer mode.

Field Documentation

enum dma_dir dir

Transfer direction, only for HALF-SIZE DMA and VFF DMA.

Refer to dma_dir.

u8 wrap_en

Flag of transfer address-wrapping feature.

If it is enabled, wrap_point and wrap_to_addr need to be set. Refer to struct dma_config.
Only for FULL-SIZE DMA and HALF-SIZE DMA.

u8 wrap_side

The side for using address-wrapping: source or destination, and only one side can activate address-wrapping feature at a time.

Only for FULL-SIZE DMA and HALF-SIZE DMA.

enum dma_burst_type burst_type

Burst-type, only for FULL-SIZE DMA and HALF-SIZE DMA.

Refer to dma_burst_type.

enum dma_transize transize

Data size within the confine of a bus cycle per transfer.

Refer to dma_transize.

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

• mhal_dma.h