DMA Configuration Structure prototype. More...

Data Fields
uint8_t	module

uint8_t	stream

uint8_t	channel

dma_direction_t	direction

dma_mode_t	mode

bool	src_inc

dma_data_align_t	data_align_source

dma_burst_size_t	burst_size_source

bool	dst_inc

dma_data_align_t	data_align_destination

dma_burst_size_t	burst_size_destination

dma_priority_t	priority

uint32_t	addr_src

uint32_t	addr_dst

size_t	transfer_length

Detailed Description

Example

// DMA driver configuration structure.
static dma_config_t dma_cfg;
 
// Fill structure with default values.
dma_configure_default( &dma_cfg );
 
// Specify desired DMA module.
dma_cfg.module = 0; // First module (DMA0 or DMA1 based on MCU).
 
// Specify desired DMA stream number.
dma_cfg.stream = 5;
 
// Specify desired DMA channel number.
dma_cfg.channel = 3;

Field Documentation

◆ module

uint8_t dma_config_t::module

Specifies the module.

◆ stream

uint8_t dma_config_t::stream

Specifies the stream.

◆ channel

uint8_t dma_config_t::channel

Specifies the channel used for the specified stream.

◆ direction

dma_direction_t dma_config_t::direction

Specifies if the data will be transferred from memory to peripheral, from memory to memory, from peripheral to memory, or from peripheral to peripheral. This parameter can be a value of dma_direction_t

◆ mode

dma_mode_t dma_config_t::mode

Specifies the operation mode of the DMA Stream. This parameter can be a value of dma_mode_t

◆ src_inc

bool dma_config_t::src_inc

Specifies whether the Source address register should be incremented or not.

◆ data_align_source

dma_data_align_t dma_config_t::data_align_source

Specifies the Source data width. This parameter can be a value of dma_data_align_t

◆ burst_size_source

dma_burst_size_t dma_config_t::burst_size_source

Specifies the Burst transfer configuration for the source transfers. It specifies the amount of data to be transferred in a single non interruptable transaction. This parameter can be a value of dma_burst_size_t

Note: The burst mode is possible only if the address increment mode is enabled.

◆ dst_inc

bool dma_config_t::dst_inc

Specifies whether the Destination address register should be incremented or not.

◆ data_align_destination

dma_data_align_t dma_config_t::data_align_destination

Specifies the Destination data width. This parameter can be a value of dma_data_align_t

◆ burst_size_destination

dma_burst_size_t dma_config_t::burst_size_destination

Specifies the Burst transfer configuration for the destination transfers. It specifies the amount of data to be transferred in a single non interruptable transaction. This parameter can be a value of dma_burst_size_t

Note: The burst mode is possible only if the address increment mode is enabled.

◆ priority

dma_priority_t dma_config_t::priority

Specifies the software priority for the DMA Stream. This parameter can be a value of dma_priority_t

◆ addr_src

uint32_t dma_config_t::addr_src

Address to transfer from.

◆ addr_dst

uint32_t dma_config_t::addr_dst

Address to transfer to.

◆ transfer_length

size_t dma_config_t::transfer_length

Number of bytes to transfer.

Data Fields