DMA_CfgChannel_TypeDef Struct ReferenceEMLIB > DMA

Configuration structure for a channel.

Definition at line 158 of file em_dma.h .

#include < em_dma.h >

Data Fields

DMA_CB_TypeDef * cb
User definable callback handling configuration.
bool enableInt
bool highPri
uint32_t select

Field Documentation

DMA_CB_TypeDef * DMA_CfgChannel_TypeDef::cb

User definable callback handling configuration.

Refer to structure definition for details. The callback is invoked when specified DMA cycle is complete (when dma_done signal asserted). Callback is invoked in interrupt context, and should be efficient and non-blocking. Set to NULL to not use the callback feature.

Note
Referenced structure is used by the interrupt handler, and must be available until no longer used. Thus, in most cases it should not be located on the stack.

Definition at line 195 of file em_dma.h .

Referenced by DMA_CfgChannel() .

bool DMA_CfgChannel_TypeDef::enableInt

Select if interrupt will be enabled for channel (triggering interrupt handler when dma_done signal is asserted). It should normally be enabled if using the callback feature for a channel, and disabled if not using the callback feature.

Definition at line 172 of file em_dma.h .

Referenced by DMA_CfgChannel() .

bool DMA_CfgChannel_TypeDef::highPri

Select if channel priority is in the high or default priority group with respect to arbitration. Within a priority group, lower numbered channels have higher priority than higher numbered channels.

Definition at line 164 of file em_dma.h .

Referenced by DMA_CfgChannel() .

uint32_t DMA_CfgChannel_TypeDef::select

Channel control specifying the source of DMA signals. If accessing peripherals, use one of the DMAREQ_nnn defines available for the peripheral. Set to 0 for memory-to-memory DMA cycles.

Definition at line 179 of file em_dma.h .

Referenced by DMA_CfgChannel() .

The documentation for this struct was generated from the following file:
  • C:/repos/super_h1/platform/emlib/inc/ em_dma.h