DMA_CfgDescrSGAlt_TypeDef Struct ReferenceEMLIB > DMA

Configuration structure for alternate scatter-gather descriptor.

Definition at line 258 of file em_dma.h .

#include < em_dma.h >

Data Fields

DMA_ArbiterConfig_TypeDef arbRate
void * dst
DMA_DataInc_TypeDef dstInc
uint8_t hprot
uint16_t nMinus1
bool peripheral
DMA_DataSize_TypeDef size
void * src
DMA_DataInc_TypeDef srcInc

Field Documentation

DMA_ArbiterConfig_TypeDef DMA_CfgDescrSGAlt_TypeDef::arbRate

Arbitration rate, i.e., number of DMA transfers done before re-arbitration takes place.

Definition at line 278 of file em_dma.h .

Referenced by DMA_CfgDescrScatterGather() .

void* DMA_CfgDescrSGAlt_TypeDef::dst

Pointer to location to transfer data to.

Definition at line 263 of file em_dma.h .

Referenced by DMA_CfgDescrScatterGather() .

DMA_DataInc_TypeDef DMA_CfgDescrSGAlt_TypeDef::dstInc

Destination increment size for each DMA transfer.

Definition at line 266 of file em_dma.h .

Referenced by DMA_CfgDescrScatterGather() .

uint8_t DMA_CfgDescrSGAlt_TypeDef::hprot

HPROT signal state, refer to reference manual, DMA chapter for further details. Normally set to 0 if protection is not an issue. The following bits are available:

  • bit 0 - HPROT[1] control for source read accesses, privileged/non-privileged access.
  • bit 3 - HPROT[1] control for destination write accesses, privileged/non-privileged access.

Definition at line 292 of file em_dma.h .

Referenced by DMA_CfgDescrScatterGather() .

uint16_t DMA_CfgDescrSGAlt_TypeDef::nMinus1

Number of DMA transfers minus 1 to do. Must be <= 1023.

Definition at line 281 of file em_dma.h .

Referenced by DMA_CfgDescrScatterGather() .

bool DMA_CfgDescrSGAlt_TypeDef::peripheral

Specify if a memory or peripheral scatter-gather DMA cycle. Notice that this parameter should be the same for all alternate descriptors.

  • true - this is a peripheral scatter-gather cycle.
  • false - this is a memory scatter-gather cycle.

Definition at line 300 of file em_dma.h .

Referenced by DMA_CfgDescrScatterGather() .

DMA_DataSize_TypeDef DMA_CfgDescrSGAlt_TypeDef::size

DMA transfer unit size.

Definition at line 272 of file em_dma.h .

Referenced by DMA_CfgDescrScatterGather() .

void* DMA_CfgDescrSGAlt_TypeDef::src

Pointer to location to transfer data from.

Definition at line 260 of file em_dma.h .

Referenced by DMA_CfgDescrScatterGather() .

DMA_DataInc_TypeDef DMA_CfgDescrSGAlt_TypeDef::srcInc

Source increment size for each DMA transfer.

Definition at line 269 of file em_dma.h .

Referenced by DMA_CfgDescrScatterGather() .


The documentation for this struct was generated from the following file:
  • C:/repos/embsw_super_h1/platform/emlib/inc/ em_dma.h