STM32F439xx HAL User Manual
Functions
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: + Extended features functions. More...

#include "stm32f4xx_hal.h"

Go to the source code of this file.

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: + Extended features functions.

Author:
MCD Application Team
  ==============================================================================
                        ##### 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

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of STMicroelectronics nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Definition in file stm32f4xx_hal_dma_ex.c.