Detailed Description

Configuration structure for alternate scatter-gather descriptor.

Definition at line 277 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, ie number of DMA transfers done before rearbitration takes place.

Definition at line 298 of file em_dma.h.

Referenced by DMA_CfgDescrScatterGather().

void* DMA_CfgDescrSGAlt_TypeDef::dst

Pointer to location to transfer data to.

Definition at line 283 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 286 of file em_dma.h.

Referenced by DMA_CfgDescrScatterGather().

uint8_t DMA_CfgDescrSGAlt_TypeDef::hprot

HPROT signal state, please 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 312 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 301 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.