File content as of revision 632:7687fb9c4f91:

/**
  ******************************************************************************
  * @file    stm32f3xx_hal_dma.c
  * @author  MCD Application Team
  * @version V1.1.1
  * @date    19-June-2015
  * @brief   DMA HAL module driver.
  *    
  *         This file provides firmware functions to manage the following 
  *         functionalities of the Direct Memory Access (DMA) peripheral:
  *           + Initialization and de-initialization functions
  *           + IO operation functions
  *           + Peripheral State and errors functions
  @verbatim     
  ==============================================================================      
                        ##### How to use this driver #####
  ============================================================================== 
  [..]
   (#) Enable and configure the peripheral to be connected to the DMA Channel
       (except for internal SRAM / FLASH memories: no initialization is 
       necessary) please refer to Reference manual for connection between peripherals
       and DMA requests .

   (#) For a given Channel, program the required configuration through the following parameters:   
       Transfer Direction, Source and Destination data formats, 
       Circular, Normal or peripheral flow control mode, Channel Priority level, 
       Source and Destination Increment mode, FIFO mode and its Threshold (if needed), 
       Burst mode for Source and/or Destination (if needed) using HAL_DMA_Init() function.

     *** Polling mode IO operation ***
     =================================   
    [..] 
          (+) Use HAL_DMA_Start() to start DMA transfer after the configuration of Source 
              address and destination address and the Length of data to be transferred
          (+) Use HAL_DMA_PollForTransfer() to poll for the end of current transfer, in this  
              case a fixed Timeout can be configured by User depending from his application.

     *** Interrupt mode IO operation ***    
     =================================== 
    [..]     
          (+) Configure the DMA interrupt priority using HAL_NVIC_SetPriority()
          (+) Enable the DMA IRQ handler using HAL_NVIC_EnableIRQ() 
          (+) Use HAL_DMA_Start_IT() to start DMA transfer after the configuration of  
              Source address and destination address and the Length of data to be transferred. In this 
              case the DMA interrupt is configured 
          (+) Use HAL_DMA_IRQHandler() called under DMA_IRQHandler() Interrupt subroutine
          (+) At the end of data transfer HAL_DMA_IRQHandler() function is executed and user can 
              add his own function by customization of function pointer XferCpltCallback and 
              XferErrorCallback (i.e a member of DMA handle structure). 

     (#) Use HAL_DMA_GetState() function to return the DMA state and HAL_DMA_GetError() in case of error 
         detection.

     (#) Use HAL_DMA_Abort() function to abort the current transfer

     -@-   In Memory-to-Memory transfer mode, Circular mode is not allowed.

     *** DMA HAL driver macros list ***
     ============================================= 
     [..]
       Below the list of most used macros in DMA HAL driver.

      (+) __HAL_DMA_ENABLE: Enable the specified DMA Channel.
      (+) __HAL_DMA_DISABLE: Disable the specified DMA Channel.
      (+) __HAL_DMA_GET_FLAG: Get the DMA Channel pending flags.
      (+) __HAL_DMA_CLEAR_FLAG: Clear the DMA Channel pending flags.
      (+) __HAL_DMA_ENABLE_IT: Enable the specified DMA Channel interrupts.
      (+) __HAL_DMA_DISABLE_IT: Disable the specified DMA Channel interrupts.
      (+) __HAL_DMA_IT_STATUS: Check whether the specified DMA Channel interrupt has occurred or not. 

     [..] 
      (@) You can refer to the DMA HAL driver header file for more useful macros  

  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
  *
  * 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.
  *
  ******************************************************************************
  */ 

/* Includes ------------------------------------------------------------------*/
#include "stm32f3xx_hal.h"

/** @addtogroup STM32F3xx_HAL_Driver
  * @{
  */

/** @defgroup DMA DMA HAL module driver
  * @brief DMA HAL module driver
  * @{
  */

#ifdef HAL_DMA_MODULE_ENABLED

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @defgroup DMA_Private_Defines DMA Private Define
  * @{
  */
#define HAL_TIMEOUT_DMA_ABORT    ((uint32_t)1000)  /* 1s  */
/**
  * @}
  */

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/** @defgroup DMA_Private_Functions DMA Private Functions
  * @{
  */
static void DMA_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength);
/**
  * @}
  */

/* Exported functions ---------------------------------------------------------*/
/** @defgroup DMA_Exported_Functions DMA Exported Functions
  * @{
  */

/** @defgroup DMA_Exported_Functions_Group1 Initialization and de-initialization functions 
 *  @brief   Initialization and de-initialization functions 
 *
@verbatim   
 ===============================================================================
             ##### Initialization and de-initialization functions  #####
 ===============================================================================  
    [..]
    This section provides functions allowing to initialize the DMA Channel source
    and destination addresses, incrementation and data sizes, transfer direction, 
    circular/normal mode selection, memory-to-memory mode selection and Channel priority value.
    [..]
    The HAL_DMA_Init() function follows the DMA configuration procedures as described in
    reference manual.  

@endverbatim
  * @{
  */
  
/**
  * @brief  Initializes the DMA according to the specified
  *         parameters in the DMA_InitTypeDef and create the associated handle.
  * @param  hdma: Pointer to a DMA_HandleTypeDef structure that contains
  *               the configuration information for the specified DMA Channel.  
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DMA_Init(DMA_HandleTypeDef *hdma)
{ 
  uint32_t tmp = 0;
  
  /* Check the DMA handle allocation */
  if(hdma == NULL)
  {
    return HAL_ERROR;
  }
  
  /* Check the parameters */
  assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));
  assert_param(IS_DMA_DIRECTION(hdma->Init.Direction));
  assert_param(IS_DMA_PERIPHERAL_INC_STATE(hdma->Init.PeriphInc));
  assert_param(IS_DMA_MEMORY_INC_STATE(hdma->Init.MemInc));
  assert_param(IS_DMA_PERIPHERAL_DATA_SIZE(hdma->Init.PeriphDataAlignment));
  assert_param(IS_DMA_MEMORY_DATA_SIZE(hdma->Init.MemDataAlignment));
  assert_param(IS_DMA_MODE(hdma->Init.Mode));
  assert_param(IS_DMA_PRIORITY(hdma->Init.Priority));
  
  /* Change DMA peripheral state */
  hdma->State = HAL_DMA_STATE_BUSY;

  /* Get the CR register value */
  tmp = hdma->Instance->CCR;
  
  /* Clear PL, MSIZE, PSIZE, MINC, PINC, CIRC, DIR bits */
  tmp &= ((uint32_t)~(DMA_CCR_PL    | DMA_CCR_MSIZE  | DMA_CCR_PSIZE  | \
                      DMA_CCR_MINC  | DMA_CCR_PINC   | DMA_CCR_CIRC   | \
                      DMA_CCR_DIR));
  
  /* Prepare the DMA Channel configuration */
  tmp |=  hdma->Init.Direction        |
          hdma->Init.PeriphInc           | hdma->Init.MemInc           |
          hdma->Init.PeriphDataAlignment | hdma->Init.MemDataAlignment |
          hdma->Init.Mode                | hdma->Init.Priority;

  /* Write to DMA Channel CR register */
  hdma->Instance->CCR = tmp;  
  
  /* Initialise the error code */
  hdma->ErrorCode = HAL_DMA_ERROR_NONE;

  /* Initialize the DMA state*/
  hdma->State  = HAL_DMA_STATE_READY;
  
  return HAL_OK;
}  
  
/**
  * @brief  DeInitializes the DMA peripheral 
  * @param  hdma: pointer to a DMA_HandleTypeDef structure that contains
  *               the configuration information for the specified DMA Channel.  
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DMA_DeInit(DMA_HandleTypeDef *hdma)
{
  /* Check the DMA handle allocation */
  if(hdma == NULL)
  {
    return HAL_ERROR;
  }
  
  /* Check the parameters */
  assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));

  /* Check the DMA peripheral state */
  if(hdma->State == HAL_DMA_STATE_BUSY)
  {
     return HAL_ERROR;
  }

  /* Disable the selected DMA Channelx */
  __HAL_DMA_DISABLE(hdma);
  
  /* Reset DMA Channel control register */
  hdma->Instance->CCR  = 0;
  
  /* Reset DMA Channel Number of Data to Transfer register */
  hdma->Instance->CNDTR = 0;
  
  /* Reset DMA Channel peripheral address register */
  hdma->Instance->CPAR  = 0;
  
  /* Reset DMA Channel memory address register */
  hdma->Instance->CMAR = 0;

  /* Clear all flags */
  __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
  __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
  __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
  
  /* Initialise the error code */
  hdma->ErrorCode = HAL_DMA_ERROR_NONE;

  /* Initialize the DMA state */
  hdma->State = HAL_DMA_STATE_RESET;

  /* Release Lock */
  __HAL_UNLOCK(hdma);

  return HAL_OK;
}

/**
  * @}
  */

/** @defgroup DMA_Exported_Functions_Group2 Input and Output operation functions 
 *  @brief   I/O operation functions  
 *
@verbatim   
 ===============================================================================
                      #####  IO operation functions  #####
 ===============================================================================  
    [..]  This section provides functions allowing to:
      (+) Configure the source, destination address and data length and Start DMA transfer
      (+) Configure the source, destination address and data length and 
          Start DMA transfer with interrupt
      (+) Abort DMA transfer
      (+) Poll for transfer complete
      (+) Handle DMA interrupt request  

@endverbatim
  * @{
  */

/**
  * @brief  Starts the DMA Transfer.
  * @param  hdma      : pointer to a DMA_HandleTypeDef structure that contains
  *                     the configuration information for the specified DMA Channel.  
  * @param  SrcAddress: The source memory Buffer address
  * @param  DstAddress: The destination memory Buffer address
  * @param  DataLength: The length of data to be transferred from source to destination
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DMA_Start(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
{ 
  /* Process locked */
  __HAL_LOCK(hdma);  

  /* Change DMA peripheral state */  
  hdma->State = HAL_DMA_STATE_BUSY;  

   /* Check the parameters */
  assert_param(IS_DMA_BUFFER_SIZE(DataLength));
  
  /* Disable the peripheral */
  __HAL_DMA_DISABLE(hdma);  
  
  /* Configure the source, destination address and the data length */
  DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength);

  /* Enable the Peripheral */
  __HAL_DMA_ENABLE(hdma);  

  return HAL_OK; 
} 

/**
  * @brief  Start the DMA Transfer with interrupt enabled.
  * @param  hdma:       pointer to a DMA_HandleTypeDef structure that contains
  *                     the configuration information for the specified DMA Channel.  
  * @param  SrcAddress: The source memory Buffer address
  * @param  DstAddress: The destination memory Buffer address
  * @param  DataLength: The length of data to be transferred from source to destination
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DMA_Start_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
{
  /* Process locked */
  __HAL_LOCK(hdma);

  /* Change DMA peripheral state */  
  hdma->State = HAL_DMA_STATE_BUSY;  

   /* Check the parameters */
  assert_param(IS_DMA_BUFFER_SIZE(DataLength));
  
  /* Disable the peripheral */
  __HAL_DMA_DISABLE(hdma);
  
  /* Configure the source, destination address and the data length */  
  DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength);
  
  /* Enable the transfer complete interrupt */
  __HAL_DMA_ENABLE_IT(hdma, DMA_IT_TC);

  /* Enable the Half transfer complete interrupt */
  __HAL_DMA_ENABLE_IT(hdma, DMA_IT_HT);  

  /* Enable the transfer Error interrupt */
  __HAL_DMA_ENABLE_IT(hdma, DMA_IT_TE);
  
   /* Enable the Peripheral */
  __HAL_DMA_ENABLE(hdma);   
  
  return HAL_OK;    
} 

/**
  * @brief  Aborts the DMA Transfer.
  * @param  hdma  : pointer to a DMA_HandleTypeDef structure that contains
  *                 the configuration information for the specified DMA Channel.
  *                   
  * @note  After disabling a DMA Channel, a check for wait until the DMA Channel is 
  *        effectively disabled is added. If a Channel is disabled 
  *        while a data transfer is ongoing, the current data will be transferred
  *        and the Channel will be effectively disabled only after the transfer of
  *        this single data is finished.  
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DMA_Abort(DMA_HandleTypeDef *hdma)
{
  uint32_t tickstart = 0x00;
  
  /* Disable the channel */
  __HAL_DMA_DISABLE(hdma);
  
  /* Get timeout */
  tickstart = HAL_GetTick();
  
  /* Check if the DMA Channel is effectively disabled */
  while((hdma->Instance->CCR & DMA_CCR_EN) != 0) 
  {
    /* Check for the Timeout */
    if((HAL_GetTick()-tickstart) > HAL_TIMEOUT_DMA_ABORT)
    {
      /* Update error code */
      hdma->ErrorCode |= HAL_DMA_ERROR_TIMEOUT;

      /* Change the DMA state */
      hdma->State = HAL_DMA_STATE_TIMEOUT;

      /* Process Unlocked */
      __HAL_UNLOCK(hdma);

      return HAL_TIMEOUT;
    }
  }
  /* Change the DMA state*/
  hdma->State = HAL_DMA_STATE_READY; 
  
  /* Process Unlocked */
  __HAL_UNLOCK(hdma);
  
  return HAL_OK; 
}

/**
  * @brief  Polling for transfer complete.
  * @param  hdma:    pointer to a DMA_HandleTypeDef structure that contains
  *                  the configuration information for the specified DMA Channel.
  * @param  CompleteLevel: Specifies the DMA level complete.  
  * @param  Timeout:       Timeout duration.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DMA_PollForTransfer(DMA_HandleTypeDef *hdma, uint32_t CompleteLevel, uint32_t Timeout)
{
  uint32_t temp;
  uint32_t tickstart = 0x00;
  
  /* Get the level transfer complete flag */
  if(CompleteLevel == HAL_DMA_FULL_TRANSFER)
  {
    /* Transfer Complete flag */
    temp = __HAL_DMA_GET_TC_FLAG_INDEX(hdma);
  }
  else
  {
    /* Half Transfer Complete flag */
    temp = __HAL_DMA_GET_HT_FLAG_INDEX(hdma);
  }

  /* Get timeout */
  tickstart = HAL_GetTick();

  while(__HAL_DMA_GET_FLAG(hdma, temp) == RESET)
  {
    if((__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma)) != RESET))
    {      
      /* Clear the transfer error flags */
      __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
      
      /* Change the DMA state */
      hdma->State= HAL_DMA_STATE_ERROR;       
      
      /* Process Unlocked */
      __HAL_UNLOCK(hdma);
      
      return HAL_ERROR;      
    }      
    /* Check for the Timeout */
    if(Timeout != HAL_MAX_DELAY)
    {
      if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
      {
        /* Update error code */
        hdma->ErrorCode |= HAL_DMA_ERROR_TIMEOUT;

        /* Change the DMA state */
        hdma->State = HAL_DMA_STATE_TIMEOUT;

        /* Process Unlocked */
        __HAL_UNLOCK(hdma);

        return HAL_TIMEOUT;
      }
    }
  }

  if(CompleteLevel == HAL_DMA_FULL_TRANSFER)
  {
    /* Clear the transfer complete flag */
    __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));

    /* The selected Channelx EN bit is cleared (DMA is disabled and 
    all transfers are complete) */
    hdma->State = HAL_DMA_STATE_READY;

  }
  else
  { 
    /* Clear the half transfer complete flag */
    __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));

    hdma->State = HAL_DMA_STATE_READY_HALF;
  }
  
  /* Process unlocked */
  __HAL_UNLOCK(hdma);  

  return HAL_OK;
}

/**
  * @brief  Handles DMA interrupt request.
  * @param  hdma: pointer to a DMA_HandleTypeDef structure that contains
  *               the configuration information for the specified DMA Channel.  
  * @retval None
  */
void HAL_DMA_IRQHandler(DMA_HandleTypeDef *hdma)
{        
  /* Transfer Error Interrupt management ***************************************/
  if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma)) != RESET)
  {
    if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TE) != RESET)
    {
      /* Disable the transfer error interrupt */
      __HAL_DMA_DISABLE_IT(hdma, DMA_IT_TE);
    
      /* Clear the transfer error flag */
      __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
    
      /* Update error code */
      hdma->ErrorCode |= HAL_DMA_ERROR_TE;

      /* Change the DMA state */
      hdma->State = HAL_DMA_STATE_ERROR;    
    
      /* Process Unlocked */
      __HAL_UNLOCK(hdma); 
    
      if (hdma->XferErrorCallback != NULL)
      {
        /* Transfer error callback */
        hdma->XferErrorCallback(hdma);
      }
    }
  }

  /* Half Transfer Complete Interrupt management ******************************/
  if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma)) != RESET)
  {
    if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_HT) != RESET)
    { 
      /* Disable the half transfer interrupt if the DMA mode is not CIRCULAR */
      if((hdma->Instance->CCR & DMA_CCR_CIRC) == 0)
      {
        /* Disable the half transfer interrupt */
        __HAL_DMA_DISABLE_IT(hdma, DMA_IT_HT);
      }
      /* Clear the half transfer complete flag */
      __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));

      /* Change DMA peripheral state */
      hdma->State = HAL_DMA_STATE_READY_HALF;

      if(hdma->XferHalfCpltCallback != NULL)
      {
        /* Half transfer callback */
        hdma->XferHalfCpltCallback(hdma);
      }
    }
  }
  
  /* Transfer Complete Interrupt management ***********************************/
  if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma)) != RESET)
  {
    if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TC) != RESET)
    {
      if((hdma->Instance->CCR & DMA_CCR_CIRC) == 0)
      {
        /* Disable the transfer complete interrupt */
        __HAL_DMA_DISABLE_IT(hdma, DMA_IT_TC);
      }
      /* Clear the transfer complete flag */
      __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
    
      /* Update error code */
      hdma->ErrorCode |= HAL_DMA_ERROR_NONE;

      /* Change the DMA state */
      hdma->State = HAL_DMA_STATE_READY;    
    
      /* Process Unlocked */
      __HAL_UNLOCK(hdma);
    
      if(hdma->XferCpltCallback != NULL)
      {       
        /* Transfer complete callback */
        hdma->XferCpltCallback(hdma);
      }
    }
  }
}  

/**
  * @}
  */

/** @defgroup DMA_Exported_Functions_Group3 Peripheral State functions
 *  @brief    Peripheral State functions 
 *
@verbatim   
 ===============================================================================
                    ##### State and Errors functions #####
 ===============================================================================  
    [..]
    This subsection provides functions allowing to
      (+) Check the DMA state
      (+) Get error code

@endverbatim
  * @{
  */  

/**
  * @brief  Returns the DMA state.
  * @param  hdma: pointer to a DMA_HandleTypeDef structure that contains
  *               the configuration information for the specified DMA Channel.  
  * @retval HAL state
  */
HAL_DMA_StateTypeDef HAL_DMA_GetState(DMA_HandleTypeDef *hdma)
{
  return hdma->State;
}

/**
  * @brief  Return the DMA error code
  * @param  hdma : pointer to a DMA_HandleTypeDef structure that contains
  *              the configuration information for the specified DMA Channel.
  * @retval DMA Error Code
  */
uint32_t HAL_DMA_GetError(DMA_HandleTypeDef *hdma)
{
  return hdma->ErrorCode;
}

/**
  * @}
  */

/**
  * @}
  */

/** @addtogroup DMA_Private_Functions DMA Private Functions
  * @{
  */

/**
  * @brief  Sets the DMA Transfer parameter.
  * @param  hdma:       pointer to a DMA_HandleTypeDef structure that contains
  *                     the configuration information for the specified DMA Channel.  
  * @param  SrcAddress: The source memory Buffer address
  * @param  DstAddress: The destination memory Buffer address
  * @param  DataLength: The length of data to be transferred from source to destination
  * @retval HAL status
  */
static void DMA_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
{  
  /* Configure DMA Channel data length */
  hdma->Instance->CNDTR = DataLength;
  
  /* Peripheral to Memory */
  if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH)
  {   
    /* Configure DMA Channel destination address */
    hdma->Instance->CPAR = DstAddress;
    
    /* Configure DMA Channel source address */
    hdma->Instance->CMAR = SrcAddress;
  }
  /* Memory to Peripheral */
  else
  {
    /* Configure DMA Channel source address */
    hdma->Instance->CPAR = SrcAddress;
    
    /* Configure DMA Channel destination address */
    hdma->Instance->CMAR = DstAddress;
  }
}

/**
  * @}
  */

#endif /* HAL_DMA_MODULE_ENABLED */
/**
  * @}
  */

/**
  * @}
  */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/