stm32h7xx_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 "stm32h7xx_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.
HAL_StatusTypeDef	HAL_DMAEx_ConfigMuxSync (DMA_HandleTypeDef *hdma, HAL_DMA_MuxSyncConfigTypeDef *pSyncConfig)
	Configure the DMAMUX synchronization parameters for a given DMA stream (instance).
HAL_StatusTypeDef	HAL_DMAEx_ConfigMuxRequestGenerator (DMA_HandleTypeDef *hdma, HAL_DMA_MuxRequestGeneratorConfigTypeDef *pRequestGeneratorConfig)
	Configure the DMAMUX request generator block used by the given DMA stream (instance).
HAL_StatusTypeDef	HAL_DMAEx_EnableMuxRequestGenerator (DMA_HandleTypeDef *hdma)
	Enable the DMAMUX request generator block used by the given DMA stream (instance).
HAL_StatusTypeDef	HAL_DMAEx_DisableMuxRequestGenerator (DMA_HandleTypeDef *hdma)
	Disable the DMAMUX request generator block used by the given DMA stream (instance).
void	HAL_DMAEx_MUX_IRQHandler (DMA_HandleTypeDef *hdma)
	Handles DMAMUX interrupt request.

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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.

   (+) Configure the DMA_MUX Synchronization Block using HAL_DMAEx_ConfigMuxSync function.
   (+) Configure the DMA_MUX Request Generator Block using HAL_DMAEx_ConfigMuxRequestGenerator function.
       Functions HAL_DMAEx_EnableMuxRequestGenerator and HAL_DMAEx_DisableMuxRequestGenerator can then be used
       to respectively enable/disable the request generator.

   (+) To handle the DMAMUX Interrupts, the function  HAL_DMAEx_MUX_IRQHandler should be called from
       the DMAMUX IRQ handler i.e DMAMUX1_OVR_IRQHandler or DMAMUX2_OVR_IRQHandler .
       As only one interrupt line is available for all DMAMUX channels and request generators , HAL_DMA_MUX_IRQHandler should be
       called with, as parameter, the appropriate DMA handle as many as used DMAs in the user project
      (exception done if a given DMA is not using the DMAMUX SYNC block neither a request generator)

     -@-  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.
     -@-  Multi (Double) buffer mode is possible with DMA and BDMA instances.

  

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 stm32h7xx_hal_dma_ex.c.