stm32f4xx_hal_dma_ex.c File Reference

DMA Extension HAL module driver This file provides firmware functions to manage the following functionalities of the DMA Extension peripheral: More...

#include "stm32f4xx_hal.h"

Include dependency graph for stm32f4xx_hal_dma_ex.c:

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Functions
static void	DMA_MultiBufferSetConfig (DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
	Set the DMA Transfer parameter.
HAL_StatusTypeDef	HAL_DMAEx_MultiBufferStart (DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength)
	Starts the multi_buffer DMA Transfer.
HAL_StatusTypeDef	HAL_DMAEx_MultiBufferStart_IT (DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength)
	Starts the multi_buffer DMA Transfer with interrupt enabled.
HAL_StatusTypeDef	HAL_DMAEx_ChangeMemory (DMA_HandleTypeDef *hdma, uint32_t Address, HAL_DMA_MemoryTypeDef memory)
	Change the memory0 or memory1 address on the fly.

Detailed Description

DMA Extension HAL module driver This file provides firmware functions to manage the following functionalities of the DMA Extension peripheral:

Author

MCD Application Team

• Extended features functions

==============================================================================
                      ##### How to use this driver #####
==============================================================================
[..]
The DMA Extension HAL driver can be used as follows:
 (#) Start a multi buffer transfer using the HAL_DMA_MultiBufferStart() function
     for polling mode or HAL_DMA_MultiBufferStart_IT() for interrupt mode.
                 
   -@-  In Memory-to-Memory transfer mode, Multi (Double) Buffer mode is not allowed.
   -@-  When Multi (Double) Buffer mode is enabled the, transfer is circular by default.
   -@-  In Multi (Double) buffer mode, it is possible to update the base address for 
        the AHB memory port on the fly (DMA_SxM0AR or DMA_SxM1AR) when the stream is enabled. 

Attention

Copyright (c) 2017 STMicroelectronics. All rights reserved.

This software is licensed under terms that can be found in the LICENSE file in the root directory of this software component. If no LICENSE file comes with this software, it is provided AS-IS.

Definition in file stm32f4xx_hal_dma_ex.c.