Takaaki Numai / mbed-dev

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targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_dma_ex.c@0:85b3fd62ea1a, 2020-03-16 (annotated)

Committer:
NYX
Date:
Mon Mar 16 06:35:48 2020 +0000
Revision:
0:85b3fd62ea1a
reinport to mbed;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
NYX 0:85b3fd62ea1a 1 /**
NYX 0:85b3fd62ea1a 2 ******************************************************************************
NYX 0:85b3fd62ea1a 3 * @file stm32f4xx_hal_dma_ex.c
NYX 0:85b3fd62ea1a 4 * @author MCD Application Team
NYX 0:85b3fd62ea1a 5 * @version V1.7.1
NYX 0:85b3fd62ea1a 6 * @date 14-April-2017
NYX 0:85b3fd62ea1a 7 * @brief DMA Extension HAL module driver
NYX 0:85b3fd62ea1a 8 * This file provides firmware functions to manage the following
NYX 0:85b3fd62ea1a 9 * functionalities of the DMA Extension peripheral:
NYX 0:85b3fd62ea1a 10 * + Extended features functions
NYX 0:85b3fd62ea1a 11 *
NYX 0:85b3fd62ea1a 12 @verbatim
NYX 0:85b3fd62ea1a 13 ==============================================================================
NYX 0:85b3fd62ea1a 14 ##### How to use this driver #####
NYX 0:85b3fd62ea1a 15 ==============================================================================
NYX 0:85b3fd62ea1a 16 [..]
NYX 0:85b3fd62ea1a 17 The DMA Extension HAL driver can be used as follows:
NYX 0:85b3fd62ea1a 18 (#) Start a multi buffer transfer using the HAL_DMA_MultiBufferStart() function
NYX 0:85b3fd62ea1a 19 for polling mode or HAL_DMA_MultiBufferStart_IT() for interrupt mode.
NYX 0:85b3fd62ea1a 20
NYX 0:85b3fd62ea1a 21 -@- In Memory-to-Memory transfer mode, Multi (Double) Buffer mode is not allowed.
NYX 0:85b3fd62ea1a 22 -@- When Multi (Double) Buffer mode is enabled the, transfer is circular by default.
NYX 0:85b3fd62ea1a 23 -@- In Multi (Double) buffer mode, it is possible to update the base address for
NYX 0:85b3fd62ea1a 24 the AHB memory port on the fly (DMA_SxM0AR or DMA_SxM1AR) when the stream is enabled.
NYX 0:85b3fd62ea1a 25
NYX 0:85b3fd62ea1a 26 @endverbatim
NYX 0:85b3fd62ea1a 27 ******************************************************************************
NYX 0:85b3fd62ea1a 28 * @attention
NYX 0:85b3fd62ea1a 29 *
NYX 0:85b3fd62ea1a 30 * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
NYX 0:85b3fd62ea1a 31 *
NYX 0:85b3fd62ea1a 32 * Redistribution and use in source and binary forms, with or without modification,
NYX 0:85b3fd62ea1a 33 * are permitted provided that the following conditions are met:
NYX 0:85b3fd62ea1a 34 * 1. Redistributions of source code must retain the above copyright notice,
NYX 0:85b3fd62ea1a 35 * this list of conditions and the following disclaimer.
NYX 0:85b3fd62ea1a 36 * 2. Redistributions in binary form must reproduce the above copyright notice,
NYX 0:85b3fd62ea1a 37 * this list of conditions and the following disclaimer in the documentation
NYX 0:85b3fd62ea1a 38 * and/or other materials provided with the distribution.
NYX 0:85b3fd62ea1a 39 * 3. Neither the name of STMicroelectronics nor the names of its contributors
NYX 0:85b3fd62ea1a 40 * may be used to endorse or promote products derived from this software
NYX 0:85b3fd62ea1a 41 * without specific prior written permission.
NYX 0:85b3fd62ea1a 42 *
NYX 0:85b3fd62ea1a 43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
NYX 0:85b3fd62ea1a 44 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
NYX 0:85b3fd62ea1a 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
NYX 0:85b3fd62ea1a 46 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
NYX 0:85b3fd62ea1a 47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
NYX 0:85b3fd62ea1a 48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
NYX 0:85b3fd62ea1a 49 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
NYX 0:85b3fd62ea1a 50 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
NYX 0:85b3fd62ea1a 51 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
NYX 0:85b3fd62ea1a 52 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
NYX 0:85b3fd62ea1a 53 *
NYX 0:85b3fd62ea1a 54 ******************************************************************************
NYX 0:85b3fd62ea1a 55 */
NYX 0:85b3fd62ea1a 56
NYX 0:85b3fd62ea1a 57 /* Includes ------------------------------------------------------------------*/
NYX 0:85b3fd62ea1a 58 #include "stm32f4xx_hal.h"
NYX 0:85b3fd62ea1a 59
NYX 0:85b3fd62ea1a 60 /** @addtogroup STM32F4xx_HAL_Driver
NYX 0:85b3fd62ea1a 61 * @{
NYX 0:85b3fd62ea1a 62 */
NYX 0:85b3fd62ea1a 63
NYX 0:85b3fd62ea1a 64 /** @defgroup DMAEx DMAEx
NYX 0:85b3fd62ea1a 65 * @brief DMA Extended HAL module driver
NYX 0:85b3fd62ea1a 66 * @{
NYX 0:85b3fd62ea1a 67 */
NYX 0:85b3fd62ea1a 68
NYX 0:85b3fd62ea1a 69 #ifdef HAL_DMA_MODULE_ENABLED
NYX 0:85b3fd62ea1a 70
NYX 0:85b3fd62ea1a 71 /* Private types -------------------------------------------------------------*/
NYX 0:85b3fd62ea1a 72 /* Private variables ---------------------------------------------------------*/
NYX 0:85b3fd62ea1a 73 /* Private Constants ---------------------------------------------------------*/
NYX 0:85b3fd62ea1a 74 /* Private macros ------------------------------------------------------------*/
NYX 0:85b3fd62ea1a 75 /* Private functions ---------------------------------------------------------*/
NYX 0:85b3fd62ea1a 76 /** @addtogroup DMAEx_Private_Functions
NYX 0:85b3fd62ea1a 77 * @{
NYX 0:85b3fd62ea1a 78 */
NYX 0:85b3fd62ea1a 79 static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength);
NYX 0:85b3fd62ea1a 80 /**
NYX 0:85b3fd62ea1a 81 * @}
NYX 0:85b3fd62ea1a 82 */
NYX 0:85b3fd62ea1a 83
NYX 0:85b3fd62ea1a 84 /* Exported functions ---------------------------------------------------------*/
NYX 0:85b3fd62ea1a 85
NYX 0:85b3fd62ea1a 86 /** @addtogroup DMAEx_Exported_Functions
NYX 0:85b3fd62ea1a 87 * @{
NYX 0:85b3fd62ea1a 88 */
NYX 0:85b3fd62ea1a 89
NYX 0:85b3fd62ea1a 90
NYX 0:85b3fd62ea1a 91 /** @addtogroup DMAEx_Exported_Functions_Group1
NYX 0:85b3fd62ea1a 92 *
NYX 0:85b3fd62ea1a 93 @verbatim
NYX 0:85b3fd62ea1a 94 ===============================================================================
NYX 0:85b3fd62ea1a 95 ##### Extended features functions #####
NYX 0:85b3fd62ea1a 96 ===============================================================================
NYX 0:85b3fd62ea1a 97 [..] This section provides functions allowing to:
NYX 0:85b3fd62ea1a 98 (+) Configure the source, destination address and data length and
NYX 0:85b3fd62ea1a 99 Start MultiBuffer DMA transfer
NYX 0:85b3fd62ea1a 100 (+) Configure the source, destination address and data length and
NYX 0:85b3fd62ea1a 101 Start MultiBuffer DMA transfer with interrupt
NYX 0:85b3fd62ea1a 102 (+) Change on the fly the memory0 or memory1 address.
NYX 0:85b3fd62ea1a 103
NYX 0:85b3fd62ea1a 104 @endverbatim
NYX 0:85b3fd62ea1a 105 * @{
NYX 0:85b3fd62ea1a 106 */
NYX 0:85b3fd62ea1a 107
NYX 0:85b3fd62ea1a 108
NYX 0:85b3fd62ea1a 109 /**
NYX 0:85b3fd62ea1a 110 * @brief Starts the multi_buffer DMA Transfer.
NYX 0:85b3fd62ea1a 111 * @param hdma : pointer to a DMA_HandleTypeDef structure that contains
NYX 0:85b3fd62ea1a 112 * the configuration information for the specified DMA Stream.
NYX 0:85b3fd62ea1a 113 * @param SrcAddress: The source memory Buffer address
NYX 0:85b3fd62ea1a 114 * @param DstAddress: The destination memory Buffer address
NYX 0:85b3fd62ea1a 115 * @param SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer
NYX 0:85b3fd62ea1a 116 * @param DataLength: The length of data to be transferred from source to destination
NYX 0:85b3fd62ea1a 117 * @retval HAL status
NYX 0:85b3fd62ea1a 118 */
NYX 0:85b3fd62ea1a 119 HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength)
NYX 0:85b3fd62ea1a 120 {
NYX 0:85b3fd62ea1a 121 HAL_StatusTypeDef status = HAL_OK;
NYX 0:85b3fd62ea1a 122
NYX 0:85b3fd62ea1a 123 /* Check the parameters */
NYX 0:85b3fd62ea1a 124 assert_param(IS_DMA_BUFFER_SIZE(DataLength));
NYX 0:85b3fd62ea1a 125
NYX 0:85b3fd62ea1a 126 /* Memory-to-memory transfer not supported in double buffering mode */
NYX 0:85b3fd62ea1a 127 if (hdma->Init.Direction == DMA_MEMORY_TO_MEMORY)
NYX 0:85b3fd62ea1a 128 {
NYX 0:85b3fd62ea1a 129 hdma->ErrorCode = HAL_DMA_ERROR_NOT_SUPPORTED;
NYX 0:85b3fd62ea1a 130 status = HAL_ERROR;
NYX 0:85b3fd62ea1a 131 }
NYX 0:85b3fd62ea1a 132 else
NYX 0:85b3fd62ea1a 133 {
NYX 0:85b3fd62ea1a 134 /* Process Locked */
NYX 0:85b3fd62ea1a 135 __HAL_LOCK(hdma);
NYX 0:85b3fd62ea1a 136
NYX 0:85b3fd62ea1a 137 if(HAL_DMA_STATE_READY == hdma->State)
NYX 0:85b3fd62ea1a 138 {
NYX 0:85b3fd62ea1a 139 /* Change DMA peripheral state */
NYX 0:85b3fd62ea1a 140 hdma->State = HAL_DMA_STATE_BUSY;
NYX 0:85b3fd62ea1a 141
NYX 0:85b3fd62ea1a 142 /* Enable the double buffer mode */
NYX 0:85b3fd62ea1a 143 hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM;
NYX 0:85b3fd62ea1a 144
NYX 0:85b3fd62ea1a 145 /* Configure DMA Stream destination address */
NYX 0:85b3fd62ea1a 146 hdma->Instance->M1AR = SecondMemAddress;
NYX 0:85b3fd62ea1a 147
NYX 0:85b3fd62ea1a 148 /* Configure the source, destination address and the data length */
NYX 0:85b3fd62ea1a 149 DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength);
NYX 0:85b3fd62ea1a 150
NYX 0:85b3fd62ea1a 151 /* Enable the peripheral */
NYX 0:85b3fd62ea1a 152 __HAL_DMA_ENABLE(hdma);
NYX 0:85b3fd62ea1a 153 }
NYX 0:85b3fd62ea1a 154 else
NYX 0:85b3fd62ea1a 155 {
NYX 0:85b3fd62ea1a 156 /* Return error status */
NYX 0:85b3fd62ea1a 157 status = HAL_BUSY;
NYX 0:85b3fd62ea1a 158 }
NYX 0:85b3fd62ea1a 159 }
NYX 0:85b3fd62ea1a 160 return status;
NYX 0:85b3fd62ea1a 161 }
NYX 0:85b3fd62ea1a 162
NYX 0:85b3fd62ea1a 163 /**
NYX 0:85b3fd62ea1a 164 * @brief Starts the multi_buffer DMA Transfer with interrupt enabled.
NYX 0:85b3fd62ea1a 165 * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
NYX 0:85b3fd62ea1a 166 * the configuration information for the specified DMA Stream.
NYX 0:85b3fd62ea1a 167 * @param SrcAddress: The source memory Buffer address
NYX 0:85b3fd62ea1a 168 * @param DstAddress: The destination memory Buffer address
NYX 0:85b3fd62ea1a 169 * @param SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer
NYX 0:85b3fd62ea1a 170 * @param DataLength: The length of data to be transferred from source to destination
NYX 0:85b3fd62ea1a 171 * @retval HAL status
NYX 0:85b3fd62ea1a 172 */
NYX 0:85b3fd62ea1a 173 HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength)
NYX 0:85b3fd62ea1a 174 {
NYX 0:85b3fd62ea1a 175 HAL_StatusTypeDef status = HAL_OK;
NYX 0:85b3fd62ea1a 176
NYX 0:85b3fd62ea1a 177 /* Check the parameters */
NYX 0:85b3fd62ea1a 178 assert_param(IS_DMA_BUFFER_SIZE(DataLength));
NYX 0:85b3fd62ea1a 179
NYX 0:85b3fd62ea1a 180 /* Memory-to-memory transfer not supported in double buffering mode */
NYX 0:85b3fd62ea1a 181 if (hdma->Init.Direction == DMA_MEMORY_TO_MEMORY)
NYX 0:85b3fd62ea1a 182 {
NYX 0:85b3fd62ea1a 183 hdma->ErrorCode = HAL_DMA_ERROR_NOT_SUPPORTED;
NYX 0:85b3fd62ea1a 184 return HAL_ERROR;
NYX 0:85b3fd62ea1a 185 }
NYX 0:85b3fd62ea1a 186
NYX 0:85b3fd62ea1a 187 /* Check callback functions */
NYX 0:85b3fd62ea1a 188 if ((NULL == hdma->XferCpltCallback) || (NULL == hdma->XferM1CpltCallback) || (NULL == hdma->XferErrorCallback))
NYX 0:85b3fd62ea1a 189 {
NYX 0:85b3fd62ea1a 190 hdma->ErrorCode = HAL_DMA_ERROR_PARAM;
NYX 0:85b3fd62ea1a 191 return HAL_ERROR;
NYX 0:85b3fd62ea1a 192 }
NYX 0:85b3fd62ea1a 193
NYX 0:85b3fd62ea1a 194 /* Process locked */
NYX 0:85b3fd62ea1a 195 __HAL_LOCK(hdma);
NYX 0:85b3fd62ea1a 196
NYX 0:85b3fd62ea1a 197 if(HAL_DMA_STATE_READY == hdma->State)
NYX 0:85b3fd62ea1a 198 {
NYX 0:85b3fd62ea1a 199 /* Change DMA peripheral state */
NYX 0:85b3fd62ea1a 200 hdma->State = HAL_DMA_STATE_BUSY;
NYX 0:85b3fd62ea1a 201
NYX 0:85b3fd62ea1a 202 /* Initialize the error code */
NYX 0:85b3fd62ea1a 203 hdma->ErrorCode = HAL_DMA_ERROR_NONE;
NYX 0:85b3fd62ea1a 204
NYX 0:85b3fd62ea1a 205 /* Enable the Double buffer mode */
NYX 0:85b3fd62ea1a 206 hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM;
NYX 0:85b3fd62ea1a 207
NYX 0:85b3fd62ea1a 208 /* Configure DMA Stream destination address */
NYX 0:85b3fd62ea1a 209 hdma->Instance->M1AR = SecondMemAddress;
NYX 0:85b3fd62ea1a 210
NYX 0:85b3fd62ea1a 211 /* Configure the source, destination address and the data length */
NYX 0:85b3fd62ea1a 212 DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength);
NYX 0:85b3fd62ea1a 213
NYX 0:85b3fd62ea1a 214 /* Clear all flags */
NYX 0:85b3fd62ea1a 215 __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
NYX 0:85b3fd62ea1a 216 __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
NYX 0:85b3fd62ea1a 217 __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
NYX 0:85b3fd62ea1a 218 __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_DME_FLAG_INDEX(hdma));
NYX 0:85b3fd62ea1a 219 __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_FE_FLAG_INDEX(hdma));
NYX 0:85b3fd62ea1a 220
NYX 0:85b3fd62ea1a 221 /* Enable Common interrupts*/
NYX 0:85b3fd62ea1a 222 hdma->Instance->CR |= DMA_IT_TC | DMA_IT_TE | DMA_IT_DME;
NYX 0:85b3fd62ea1a 223 hdma->Instance->FCR |= DMA_IT_FE;
NYX 0:85b3fd62ea1a 224
NYX 0:85b3fd62ea1a 225 if((hdma->XferHalfCpltCallback != NULL) || (hdma->XferM1HalfCpltCallback != NULL))
NYX 0:85b3fd62ea1a 226 {
NYX 0:85b3fd62ea1a 227 hdma->Instance->CR |= DMA_IT_HT;
NYX 0:85b3fd62ea1a 228 }
NYX 0:85b3fd62ea1a 229
NYX 0:85b3fd62ea1a 230 /* Enable the peripheral */
NYX 0:85b3fd62ea1a 231 __HAL_DMA_ENABLE(hdma);
NYX 0:85b3fd62ea1a 232 }
NYX 0:85b3fd62ea1a 233 else
NYX 0:85b3fd62ea1a 234 {
NYX 0:85b3fd62ea1a 235 /* Process unlocked */
NYX 0:85b3fd62ea1a 236 __HAL_UNLOCK(hdma);
NYX 0:85b3fd62ea1a 237
NYX 0:85b3fd62ea1a 238 /* Return error status */
NYX 0:85b3fd62ea1a 239 status = HAL_BUSY;
NYX 0:85b3fd62ea1a 240 }
NYX 0:85b3fd62ea1a 241 return status;
NYX 0:85b3fd62ea1a 242 }
NYX 0:85b3fd62ea1a 243
NYX 0:85b3fd62ea1a 244 /**
NYX 0:85b3fd62ea1a 245 * @brief Change the memory0 or memory1 address on the fly.
NYX 0:85b3fd62ea1a 246 * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
NYX 0:85b3fd62ea1a 247 * the configuration information for the specified DMA Stream.
NYX 0:85b3fd62ea1a 248 * @param Address: The new address
NYX 0:85b3fd62ea1a 249 * @param memory: the memory to be changed, This parameter can be one of
NYX 0:85b3fd62ea1a 250 * the following values:
NYX 0:85b3fd62ea1a 251 * MEMORY0 /
NYX 0:85b3fd62ea1a 252 * MEMORY1
NYX 0:85b3fd62ea1a 253 * @note The MEMORY0 address can be changed only when the current transfer use
NYX 0:85b3fd62ea1a 254 * MEMORY1 and the MEMORY1 address can be changed only when the current
NYX 0:85b3fd62ea1a 255 * transfer use MEMORY0.
NYX 0:85b3fd62ea1a 256 * @retval HAL status
NYX 0:85b3fd62ea1a 257 */
NYX 0:85b3fd62ea1a 258 HAL_StatusTypeDef HAL_DMAEx_ChangeMemory(DMA_HandleTypeDef *hdma, uint32_t Address, HAL_DMA_MemoryTypeDef memory)
NYX 0:85b3fd62ea1a 259 {
NYX 0:85b3fd62ea1a 260 if(memory == MEMORY0)
NYX 0:85b3fd62ea1a 261 {
NYX 0:85b3fd62ea1a 262 /* change the memory0 address */
NYX 0:85b3fd62ea1a 263 hdma->Instance->M0AR = Address;
NYX 0:85b3fd62ea1a 264 }
NYX 0:85b3fd62ea1a 265 else
NYX 0:85b3fd62ea1a 266 {
NYX 0:85b3fd62ea1a 267 /* change the memory1 address */
NYX 0:85b3fd62ea1a 268 hdma->Instance->M1AR = Address;
NYX 0:85b3fd62ea1a 269 }
NYX 0:85b3fd62ea1a 270
NYX 0:85b3fd62ea1a 271 return HAL_OK;
NYX 0:85b3fd62ea1a 272 }
NYX 0:85b3fd62ea1a 273
NYX 0:85b3fd62ea1a 274 /**
NYX 0:85b3fd62ea1a 275 * @}
NYX 0:85b3fd62ea1a 276 */
NYX 0:85b3fd62ea1a 277
NYX 0:85b3fd62ea1a 278 /**
NYX 0:85b3fd62ea1a 279 * @}
NYX 0:85b3fd62ea1a 280 */
NYX 0:85b3fd62ea1a 281
NYX 0:85b3fd62ea1a 282 /** @addtogroup DMAEx_Private_Functions
NYX 0:85b3fd62ea1a 283 * @{
NYX 0:85b3fd62ea1a 284 */
NYX 0:85b3fd62ea1a 285
NYX 0:85b3fd62ea1a 286 /**
NYX 0:85b3fd62ea1a 287 * @brief Set the DMA Transfer parameter.
NYX 0:85b3fd62ea1a 288 * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
NYX 0:85b3fd62ea1a 289 * the configuration information for the specified DMA Stream.
NYX 0:85b3fd62ea1a 290 * @param SrcAddress: The source memory Buffer address
NYX 0:85b3fd62ea1a 291 * @param DstAddress: The destination memory Buffer address
NYX 0:85b3fd62ea1a 292 * @param DataLength: The length of data to be transferred from source to destination
NYX 0:85b3fd62ea1a 293 * @retval HAL status
NYX 0:85b3fd62ea1a 294 */
NYX 0:85b3fd62ea1a 295 static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
NYX 0:85b3fd62ea1a 296 {
NYX 0:85b3fd62ea1a 297 /* Configure DMA Stream data length */
NYX 0:85b3fd62ea1a 298 hdma->Instance->NDTR = DataLength;
NYX 0:85b3fd62ea1a 299
NYX 0:85b3fd62ea1a 300 /* Peripheral to Memory */
NYX 0:85b3fd62ea1a 301 if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH)
NYX 0:85b3fd62ea1a 302 {
NYX 0:85b3fd62ea1a 303 /* Configure DMA Stream destination address */
NYX 0:85b3fd62ea1a 304 hdma->Instance->PAR = DstAddress;
NYX 0:85b3fd62ea1a 305
NYX 0:85b3fd62ea1a 306 /* Configure DMA Stream source address */
NYX 0:85b3fd62ea1a 307 hdma->Instance->M0AR = SrcAddress;
NYX 0:85b3fd62ea1a 308 }
NYX 0:85b3fd62ea1a 309 /* Memory to Peripheral */
NYX 0:85b3fd62ea1a 310 else
NYX 0:85b3fd62ea1a 311 {
NYX 0:85b3fd62ea1a 312 /* Configure DMA Stream source address */
NYX 0:85b3fd62ea1a 313 hdma->Instance->PAR = SrcAddress;
NYX 0:85b3fd62ea1a 314
NYX 0:85b3fd62ea1a 315 /* Configure DMA Stream destination address */
NYX 0:85b3fd62ea1a 316 hdma->Instance->M0AR = DstAddress;
NYX 0:85b3fd62ea1a 317 }
NYX 0:85b3fd62ea1a 318 }
NYX 0:85b3fd62ea1a 319
NYX 0:85b3fd62ea1a 320 /**
NYX 0:85b3fd62ea1a 321 * @}
NYX 0:85b3fd62ea1a 322 */
NYX 0:85b3fd62ea1a 323
NYX 0:85b3fd62ea1a 324 #endif /* HAL_DMA_MODULE_ENABLED */
NYX 0:85b3fd62ea1a 325 /**
NYX 0:85b3fd62ea1a 326 * @}
NYX 0:85b3fd62ea1a 327 */
NYX 0:85b3fd62ea1a 328
NYX 0:85b3fd62ea1a 329 /**
NYX 0:85b3fd62ea1a 330 * @}
NYX 0:85b3fd62ea1a 331 */
NYX 0:85b3fd62ea1a 332
NYX 0:85b3fd62ea1a 333 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/