tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/stm32f4xx_hal_dma_ex.c

   1 /**
   2   ******************************************************************************
   3   * @file    stm32f4xx_hal_dma_ex.c
   4   * @author  MCD Application Team
   5   * @version V1.1.0
   6   * @date    19-June-2014
   7   * @brief   DMA Extension HAL module driver
   8   *         This file provides firmware functions to manage the following
   9   *         functionalities of the DMA Extension peripheral:
  10   *           + Extended features functions
  11   *
  12   @verbatim
  13   ==============================================================================
  14                         ##### How to use this driver #####
  15   ==============================================================================
  16   [..]
  17   The DMA Extension HAL driver can be used as follows:
  18    (#) Start a multi buffer transfer using the HAL_DMA_MultiBufferStart() function
  19        for polling mode or HAL_DMA_MultiBufferStart_IT() for interrupt mode.
  20
  21      -@-  In Memory-to-Memory transfer mode, Multi (Double) Buffer mode is not allowed.
  22      -@-  When Multi (Double) Buffer mode is enabled the, transfer is circular by default.
  23      -@-  In Multi (Double) buffer mode, it is possible to update the base address for
  24           the AHB memory port on the fly (DMA_SxM0AR or DMA_SxM1AR) when the stream is enabled.
  25
  26   @endverbatim
  27   ******************************************************************************
  28   * @attention
  29   *
  30   * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
  31   *
  32   * Redistribution and use in source and binary forms, with or without modification,
  33   * are permitted provided that the following conditions are met:
  34   *   1. Redistributions of source code must retain the above copyright notice,
  35   *      this list of conditions and the following disclaimer.
  36   *   2. Redistributions in binary form must reproduce the above copyright notice,
  37   *      this list of conditions and the following disclaimer in the documentation
  38   *      and/or other materials provided with the distribution.
  39   *   3. Neither the name of STMicroelectronics nor the names of its contributors
  40   *      may be used to endorse or promote products derived from this software
  41   *      without specific prior written permission.
  42   *
  43   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  44   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  46   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  47   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  49   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  50   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  51   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  52   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  53   *
  54   ******************************************************************************
  55   */
  56
  57 /* Includes ------------------------------------------------------------------*/
  58 #include "stm32f4xx_hal.h"
  59
  60 /** @addtogroup STM32F4xx_HAL_Driver
  61   * @{
  62   */
  63
  64 /** @defgroup DMAEx
  65   * @brief DMA Extended HAL module driver
  66   * @{
  67   */
  68
  69 #ifdef HAL_DMA_MODULE_ENABLED
  70
  71 /* Private typedef -----------------------------------------------------------*/
  72 /* Private define ------------------------------------------------------------*/
  73 /* Private macro -------------------------------------------------------------*/
  74 /* Private variables ---------------------------------------------------------*/
  75 /* Private function prototypes -----------------------------------------------*/
  76 static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength);
  77
  78 /* Private functions ---------------------------------------------------------*/
  79
  80 /** @defgroup DMAEx_Private_Functions
  81   * @{
  82   */
  83
  84
  85 /** @defgroup DMAEx_Group1 Extended features functions
  86  *  @brief   Extended features functions
  87  *
  88 @verbatim
  89  ===============================================================================
  90                 #####  Extended features functions  #####
  91  ===============================================================================
  92     [..]  This section provides functions allowing to:
  93       (+) Configure the source, destination address and data length and
  94           Start MultiBuffer DMA transfer
  95       (+) Configure the source, destination address and data length and
  96           Start MultiBuffer DMA transfer with interrupt
  97       (+) Change on the fly the memory0 or memory1 address.
  98
  99 @endverbatim
 100   * @{
 101   */
 102
 103
 104 /**
 105   * @brief  Starts the multi_buffer DMA Transfer.
 106   * @param  hdma      : pointer to a DMA_HandleTypeDef structure that contains
 107   *                     the configuration information for the specified DMA Stream.
 108   * @param  SrcAddress: The source memory Buffer address
 109   * @param  DstAddress: The destination memory Buffer address
 110   * @param  SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer
 111   * @param  DataLength: The length of data to be transferred from source to destination
 112   * @retval HAL status
 113   */
 114 HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength)
 115 {
 116   /* Process Locked */
 117   __HAL_LOCK(hdma);
 118
 119   /* Current memory buffer used is Memory 0 */
 120   if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
 121   {
 122     hdma->State = HAL_DMA_STATE_BUSY_MEM0;
 123   }
 124   /* Current memory buffer used is Memory 1 */
 125   else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
 126   {
 127     hdma->State = HAL_DMA_STATE_BUSY_MEM1;
 128   }
 129
 130    /* Check the parameters */
 131   assert_param(IS_DMA_BUFFER_SIZE(DataLength));
 132
 133   /* Disable the peripheral */
 134   __HAL_DMA_DISABLE(hdma);
 135
 136   /* Enable the double buffer mode */
 137   hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM;
 138
 139   /* Configure DMA Stream destination address */
 140   hdma->Instance->M1AR = SecondMemAddress;
 141
 142   /* Configure the source, destination address and the data length */
 143   DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength);
 144
 145   /* Enable the peripheral */
 146   __HAL_DMA_ENABLE(hdma);
 147
 148   return HAL_OK;
 149 }
 150
 151 /**
 152   * @brief  Starts the multi_buffer DMA Transfer with interrupt enabled.
 153   * @param  hdma:       pointer to a DMA_HandleTypeDef structure that contains
 154   *                     the configuration information for the specified DMA Stream.
 155   * @param  SrcAddress: The source memory Buffer address
 156   * @param  DstAddress: The destination memory Buffer address
 157   * @param  SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer
 158   * @param  DataLength: The length of data to be transferred from source to destination
 159   * @retval HAL status
 160   */
 161 HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength)
 162 {
 163   /* Process Locked */
 164   __HAL_LOCK(hdma);
 165
 166   /* Current memory buffer used is Memory 0 */
 167   if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
 168   {
 169     hdma->State = HAL_DMA_STATE_BUSY_MEM0;
 170   }
 171   /* Current memory buffer used is Memory 1 */
 172   else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
 173   {
 174     hdma->State = HAL_DMA_STATE_BUSY_MEM1;
 175   }
 176
 177   /* Check the parameters */
 178   assert_param(IS_DMA_BUFFER_SIZE(DataLength));
 179
 180   /* Disable the peripheral */
 181   __HAL_DMA_DISABLE(hdma);
 182
 183   /* Enable the Double buffer mode */
 184   hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM;
 185
 186   /* Configure DMA Stream destination address */
 187   hdma->Instance->M1AR = SecondMemAddress;
 188
 189   /* Configure the source, destination address and the data length */
 190   DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength);
 191
 192   /* Enable the transfer complete interrupt */
 193   __HAL_DMA_ENABLE_IT(hdma, DMA_IT_TC);
 194
 195   /* Enable the Half transfer interrupt */
 196   __HAL_DMA_ENABLE_IT(hdma, DMA_IT_HT);
 197
 198   /* Enable the transfer Error interrupt */
 199   __HAL_DMA_ENABLE_IT(hdma, DMA_IT_TE);
 200
 201   /* Enable the fifo Error interrupt */
 202   __HAL_DMA_ENABLE_IT(hdma, DMA_IT_FE);
 203
 204   /* Enable the direct mode Error interrupt */
 205   __HAL_DMA_ENABLE_IT(hdma, DMA_IT_DME);
 206
 207   /* Enable the peripheral */
 208   __HAL_DMA_ENABLE(hdma);
 209
 210   return HAL_OK;
 211 }
 212
 213 /**
 214   * @brief  Change the memory0 or memory1 address on the fly.
 215   * @param  hdma:       pointer to a DMA_HandleTypeDef structure that contains
 216   *                     the configuration information for the specified DMA Stream.
 217   * @param  Address:    The new address
 218   * @param  memory:     the memory to be changed, This parameter can be one of
 219   *                     the following values:
 220   *                      MEMORY0 /
 221   *                      MEMORY1
 222   * @note   The MEMORY0 address can be changed only when the current transfer use
 223   *         MEMORY1 and the MEMORY1 address can be changed only when the current
 224   *         transfer use MEMORY0.
 225   * @retval HAL status
 226   */
 227 HAL_StatusTypeDef HAL_DMAEx_ChangeMemory(DMA_HandleTypeDef *hdma, uint32_t Address, HAL_DMA_MemoryTypeDef memory)
 228 {
 229   if(memory == MEMORY0)
 230   {
 231     /* change the memory0 address */
 232     hdma->Instance->M0AR = Address;
 233   }
 234   else
 235   {
 236     /* change the memory1 address */
 237     hdma->Instance->M1AR = Address;
 238   }
 239
 240   return HAL_OK;
 241 }
 242
 243 /**
 244   * @}
 245   */
 246
 247 /**
 248   * @brief  Set the DMA Transfer parameter.
 249   * @param  hdma:       pointer to a DMA_HandleTypeDef structure that contains
 250   *                     the configuration information for the specified DMA Stream.
 251   * @param  SrcAddress: The source memory Buffer address
 252   * @param  DstAddress: The destination memory Buffer address
 253   * @param  DataLength: The length of data to be transferred from source to destination
 254   * @retval HAL status
 255   */
 256 static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
 257 {
 258   /* Configure DMA Stream data length */
 259   hdma->Instance->NDTR = DataLength;
 260
 261   /* Peripheral to Memory */
 262   if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH)
 263   {
 264     /* Configure DMA Stream destination address */
 265     hdma->Instance->PAR = DstAddress;
 266
 267     /* Configure DMA Stream source address */
 268     hdma->Instance->M0AR = SrcAddress;
 269   }
 270   /* Memory to Peripheral */
 271   else
 272   {
 273     /* Configure DMA Stream source address */
 274     hdma->Instance->PAR = SrcAddress;
 275
 276     /* Configure DMA Stream destination address */
 277     hdma->Instance->M0AR = DstAddress;
 278   }
 279 }
 280
 281 /**
 282   * @}
 283   */
 284
 285 #endif /* HAL_DMA_MODULE_ENABLED */
 286 /**
 287   * @}
 288   */
 289
 290 /**
 291   * @}
 292   */
 293
 294 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/