Working with DMAC

Topics
	DMAC Definitions
	Dmac_functions

Macros
#define	XDMA_GET_DATASIZE(size)
#define	XDMA_GET_CC_SAM(s)
#define	XDMA_GET_CC_DAM(d)
#define	XDMA_GET_CC_MEMSET(m)

Detailed Description

Usage

• Enable or disable the a DMAC controller with DMAC_Enable() and or DMAC_Disable().
• Enable or disable Dma interrupt using DMAC_EnableIt()or DMAC_DisableIt().
• Get Dma interrupt status by DMAC_GetStatus() and DMAC_GetInterruptMask().
• Enable or disable specified Dma channel with DMAC_EnableChannel() or DMAC_DisableChannel().
• Get Dma channel status by DMAC_GetChannelStatus().
• ControlA and ControlB register is set by DMAC_SetControlA() and DMAC_SetControlB().
• Configure source and/or destination start address with DMAC_SetSourceAddr() and/or DMAC_SetDestinationAddr().
• Set Dma descriptor address using DMAC_SetDescriptorAddr().
• Set source transfer buffer size with DMAC_SetBufferSize().
• Configure source and/or destination Picture-In-Picuture mode with DMAC_SetSourcePip() and/or DMAC_SetDestPip().

For more accurate information, please look at the DMAC section of the Datasheet.

See also

Dmad_module

Related files :
dmac.c
dmac.h.

Macro Definition Documentation

XDMA_GET_CC_DAM

#define XDMA_GET_CC_DAM

(

d

)

Value:

((d==0)? XDMAC_CC_DAM_FIXED_AM : \
((d==1)? XDMAC_CC_DAM_INCREMENTED_AM : \
 ((d==2)? XDMAC_CC_DAM_UBS_AM : \
  XDMAC_CC_DAM_UBS_DS_AM)))

XDMA_GET_CC_MEMSET

#define XDMA_GET_CC_MEMSET

(

m

)

Value:

((m==0)? XDMAC_CC_MEMSET_NORMAL_MODE : \
XDMAC_CC_MEMSET_HW_MODE)

XDMA_GET_CC_SAM

#define XDMA_GET_CC_SAM

(

s

)

Value:

((s==0)? XDMAC_CC_SAM_FIXED_AM : \
((s==1)? XDMAC_CC_SAM_INCREMENTED_AM : \
 ((s==2)? XDMAC_CC_SAM_UBS_AM : \
  XDMAC_CC_SAM_UBS_DS_AM)))

XDMA_GET_DATASIZE

#define XDMA_GET_DATASIZE

(

size

)

Value:

((size==0)? XDMAC_CC_DWIDTH_BYTE : \
((size==1)? XDMAC_CC_DWIDTH_HALFWORD : \
 (XDMAC_CC_DWIDTH_WORD)))