DMA_InitTypeDef Struct Reference
[DMA]

DMA Init structure definition. More...

#include <stm32f4xx_dma.h>

Data Fields
uint32_t	DMA_Channel
uint32_t	DMA_PeripheralBaseAddr
uint32_t	DMA_Memory0BaseAddr
uint32_t	DMA_DIR
uint32_t	DMA_BufferSize
uint32_t	DMA_PeripheralInc
uint32_t	DMA_MemoryInc
uint32_t	DMA_PeripheralDataSize
uint32_t	DMA_MemoryDataSize
uint32_t	DMA_Mode
uint32_t	DMA_Priority
uint32_t	DMA_FIFOMode
uint32_t	DMA_FIFOThreshold
uint32_t	DMA_MemoryBurst
uint32_t	DMA_PeripheralBurst

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Detailed Description

DMA Init structure definition.

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Field Documentation

uint32_t DMA_BufferSize

Specifies the buffer size, in data unit, of the specified Stream. The data unit is equal to the configuration set in DMA_PeripheralDataSize or DMA_MemoryDataSize members depending in the transfer direction.

uint32_t DMA_Channel

Specifies the channel used for the specified stream. This parameter can be a value of DMA_channel

uint32_t DMA_DIR

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

uint32_t DMA_FIFOMode

Specifies if the FIFO mode or Direct mode will be used for the specified Stream. This parameter can be a value of DMA_fifo_direct_mode

Note:

The Direct mode (FIFO mode disabled) cannot be used if the memory-to-memory data transfer is configured on the selected Stream

uint32_t DMA_FIFOThreshold

Specifies the FIFO threshold level. This parameter can be a value of DMA_fifo_threshold_level

uint32_t DMA_Memory0BaseAddr

Specifies the memory 0 base address for DMAy Streamx. This memory is the default memory used when double buffer mode is not enabled.

uint32_t DMA_MemoryBurst

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

Note:

The burst mode is possible only if the address Increment mode is enabled.

uint32_t DMA_MemoryDataSize

Specifies the Memory data width. This parameter can be a value of DMA_memory_data_size

uint32_t DMA_MemoryInc

Specifies whether the memory address register should be incremented or not. This parameter can be a value of DMA_memory_incremented_mode

uint32_t DMA_Mode

Specifies the operation mode of the DMAy Streamx. This parameter can be a value of DMA_circular_normal_mode

Note:

The circular buffer mode cannot be used if the memory-to-memory data transfer is configured on the selected Stream

uint32_t DMA_PeripheralBaseAddr

Specifies the peripheral base address for DMAy Streamx.

uint32_t DMA_PeripheralBurst

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

Note:

The burst mode is possible only if the address Increment mode is enabled.

uint32_t DMA_PeripheralDataSize

Specifies the Peripheral data width. This parameter can be a value of DMA_peripheral_data_size

uint32_t DMA_PeripheralInc

Specifies whether the Peripheral address register should be incremented or not. This parameter can be a value of DMA_peripheral_incremented_mode

uint32_t DMA_Priority

Specifies the software priority for the DMAy Streamx. This parameter can be a value of DMA_priority_level

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

• Libraries/STM32F4xx_StdPeriph_Driver/inc/stm32f4xx_dma.h