Callback structure that can be used to define DMA complete actions.
A reference to this structure is only stored in the primary descriptor for a channel (if using callback feature). If callback is required for both primary and alternate descriptor completion, this must be handled by one common callback, using the provided 'primary' parameter with the callback function.
Definition at line
137
of file
em_dma.h
.
#include <
em_dma.h
>
Data Fields |
|
| DMA_FuncPtr_TypeDef | cbFunc |
| uint8_t | primary |
| void * | userPtr |
Field Documentation
| DMA_FuncPtr_TypeDef DMA_CB_TypeDef::cbFunc |
Pointer to callback function to invoke when DMA transfer cycle is done. Notice that this function is invoked in interrupt context, and therefore should be short and non-blocking.
Definition at line
143
of file
em_dma.h
.
Referenced by DMA_IRQHandler() .
| uint8_t DMA_CB_TypeDef::primary |
For internal use only: Indicates if next callback applies to primary or alternate descriptor completion. Mainly useful for ping-pong DMA cycles. Set this value to 0 prior to configuring callback handling.
Definition at line
153
of file
em_dma.h
.
Referenced by DMA_ActivateScatterGather() , and DMA_IRQHandler() .
| void* DMA_CB_TypeDef::userPtr |
User defined pointer to provide with callback function.
Definition at line
146
of file
em_dma.h
.
Referenced by DMA_IRQHandler() .
The documentation for this struct was generated from the following file:
-
C:/HandsOn/super/platform/emlib/inc/
em_dma.h