Mouse code for the MacroRat
mbed-dev/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_dma_ex.c@18:6a4db94011d3, 2017-05-14 (annotated)
- Committer:
- sahilmgandhi
- Date:
- Sun May 14 23:18:57 2017 +0000
- Revision:
- 18:6a4db94011d3
Publishing again
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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sahilmgandhi | 18:6a4db94011d3 | 1 | /** |
sahilmgandhi | 18:6a4db94011d3 | 2 | ****************************************************************************** |
sahilmgandhi | 18:6a4db94011d3 | 3 | * @file stm32f4xx_hal_dma_ex.c |
sahilmgandhi | 18:6a4db94011d3 | 4 | * @author MCD Application Team |
sahilmgandhi | 18:6a4db94011d3 | 5 | * @version V1.5.0 |
sahilmgandhi | 18:6a4db94011d3 | 6 | * @date 06-May-2016 |
sahilmgandhi | 18:6a4db94011d3 | 7 | * @brief DMA Extension HAL module driver |
sahilmgandhi | 18:6a4db94011d3 | 8 | * This file provides firmware functions to manage the following |
sahilmgandhi | 18:6a4db94011d3 | 9 | * functionalities of the DMA Extension peripheral: |
sahilmgandhi | 18:6a4db94011d3 | 10 | * + Extended features functions |
sahilmgandhi | 18:6a4db94011d3 | 11 | * |
sahilmgandhi | 18:6a4db94011d3 | 12 | @verbatim |
sahilmgandhi | 18:6a4db94011d3 | 13 | ============================================================================== |
sahilmgandhi | 18:6a4db94011d3 | 14 | ##### How to use this driver ##### |
sahilmgandhi | 18:6a4db94011d3 | 15 | ============================================================================== |
sahilmgandhi | 18:6a4db94011d3 | 16 | [..] |
sahilmgandhi | 18:6a4db94011d3 | 17 | The DMA Extension HAL driver can be used as follows: |
sahilmgandhi | 18:6a4db94011d3 | 18 | (#) Start a multi buffer transfer using the HAL_DMA_MultiBufferStart() function |
sahilmgandhi | 18:6a4db94011d3 | 19 | for polling mode or HAL_DMA_MultiBufferStart_IT() for interrupt mode. |
sahilmgandhi | 18:6a4db94011d3 | 20 | |
sahilmgandhi | 18:6a4db94011d3 | 21 | -@- In Memory-to-Memory transfer mode, Multi (Double) Buffer mode is not allowed. |
sahilmgandhi | 18:6a4db94011d3 | 22 | -@- When Multi (Double) Buffer mode is enabled the, transfer is circular by default. |
sahilmgandhi | 18:6a4db94011d3 | 23 | -@- In Multi (Double) buffer mode, it is possible to update the base address for |
sahilmgandhi | 18:6a4db94011d3 | 24 | the AHB memory port on the fly (DMA_SxM0AR or DMA_SxM1AR) when the stream is enabled. |
sahilmgandhi | 18:6a4db94011d3 | 25 | |
sahilmgandhi | 18:6a4db94011d3 | 26 | @endverbatim |
sahilmgandhi | 18:6a4db94011d3 | 27 | ****************************************************************************** |
sahilmgandhi | 18:6a4db94011d3 | 28 | * @attention |
sahilmgandhi | 18:6a4db94011d3 | 29 | * |
sahilmgandhi | 18:6a4db94011d3 | 30 | * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> |
sahilmgandhi | 18:6a4db94011d3 | 31 | * |
sahilmgandhi | 18:6a4db94011d3 | 32 | * Redistribution and use in source and binary forms, with or without modification, |
sahilmgandhi | 18:6a4db94011d3 | 33 | * are permitted provided that the following conditions are met: |
sahilmgandhi | 18:6a4db94011d3 | 34 | * 1. Redistributions of source code must retain the above copyright notice, |
sahilmgandhi | 18:6a4db94011d3 | 35 | * this list of conditions and the following disclaimer. |
sahilmgandhi | 18:6a4db94011d3 | 36 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
sahilmgandhi | 18:6a4db94011d3 | 37 | * this list of conditions and the following disclaimer in the documentation |
sahilmgandhi | 18:6a4db94011d3 | 38 | * and/or other materials provided with the distribution. |
sahilmgandhi | 18:6a4db94011d3 | 39 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
sahilmgandhi | 18:6a4db94011d3 | 40 | * may be used to endorse or promote products derived from this software |
sahilmgandhi | 18:6a4db94011d3 | 41 | * without specific prior written permission. |
sahilmgandhi | 18:6a4db94011d3 | 42 | * |
sahilmgandhi | 18:6a4db94011d3 | 43 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
sahilmgandhi | 18:6a4db94011d3 | 44 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
sahilmgandhi | 18:6a4db94011d3 | 45 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
sahilmgandhi | 18:6a4db94011d3 | 46 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
sahilmgandhi | 18:6a4db94011d3 | 47 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
sahilmgandhi | 18:6a4db94011d3 | 48 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
sahilmgandhi | 18:6a4db94011d3 | 49 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
sahilmgandhi | 18:6a4db94011d3 | 50 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
sahilmgandhi | 18:6a4db94011d3 | 51 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
sahilmgandhi | 18:6a4db94011d3 | 52 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
sahilmgandhi | 18:6a4db94011d3 | 53 | * |
sahilmgandhi | 18:6a4db94011d3 | 54 | ****************************************************************************** |
sahilmgandhi | 18:6a4db94011d3 | 55 | */ |
sahilmgandhi | 18:6a4db94011d3 | 56 | |
sahilmgandhi | 18:6a4db94011d3 | 57 | /* Includes ------------------------------------------------------------------*/ |
sahilmgandhi | 18:6a4db94011d3 | 58 | #include "stm32f4xx_hal.h" |
sahilmgandhi | 18:6a4db94011d3 | 59 | |
sahilmgandhi | 18:6a4db94011d3 | 60 | /** @addtogroup STM32F4xx_HAL_Driver |
sahilmgandhi | 18:6a4db94011d3 | 61 | * @{ |
sahilmgandhi | 18:6a4db94011d3 | 62 | */ |
sahilmgandhi | 18:6a4db94011d3 | 63 | |
sahilmgandhi | 18:6a4db94011d3 | 64 | /** @defgroup DMAEx DMAEx |
sahilmgandhi | 18:6a4db94011d3 | 65 | * @brief DMA Extended HAL module driver |
sahilmgandhi | 18:6a4db94011d3 | 66 | * @{ |
sahilmgandhi | 18:6a4db94011d3 | 67 | */ |
sahilmgandhi | 18:6a4db94011d3 | 68 | |
sahilmgandhi | 18:6a4db94011d3 | 69 | #ifdef HAL_DMA_MODULE_ENABLED |
sahilmgandhi | 18:6a4db94011d3 | 70 | |
sahilmgandhi | 18:6a4db94011d3 | 71 | /* Private types -------------------------------------------------------------*/ |
sahilmgandhi | 18:6a4db94011d3 | 72 | /* Private variables ---------------------------------------------------------*/ |
sahilmgandhi | 18:6a4db94011d3 | 73 | /* Private Constants ---------------------------------------------------------*/ |
sahilmgandhi | 18:6a4db94011d3 | 74 | /* Private macros ------------------------------------------------------------*/ |
sahilmgandhi | 18:6a4db94011d3 | 75 | /* Private functions ---------------------------------------------------------*/ |
sahilmgandhi | 18:6a4db94011d3 | 76 | /** @addtogroup DMAEx_Private_Functions |
sahilmgandhi | 18:6a4db94011d3 | 77 | * @{ |
sahilmgandhi | 18:6a4db94011d3 | 78 | */ |
sahilmgandhi | 18:6a4db94011d3 | 79 | static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength); |
sahilmgandhi | 18:6a4db94011d3 | 80 | /** |
sahilmgandhi | 18:6a4db94011d3 | 81 | * @} |
sahilmgandhi | 18:6a4db94011d3 | 82 | */ |
sahilmgandhi | 18:6a4db94011d3 | 83 | |
sahilmgandhi | 18:6a4db94011d3 | 84 | /* Exported functions ---------------------------------------------------------*/ |
sahilmgandhi | 18:6a4db94011d3 | 85 | |
sahilmgandhi | 18:6a4db94011d3 | 86 | /** @addtogroup DMAEx_Exported_Functions |
sahilmgandhi | 18:6a4db94011d3 | 87 | * @{ |
sahilmgandhi | 18:6a4db94011d3 | 88 | */ |
sahilmgandhi | 18:6a4db94011d3 | 89 | |
sahilmgandhi | 18:6a4db94011d3 | 90 | |
sahilmgandhi | 18:6a4db94011d3 | 91 | /** @addtogroup DMAEx_Exported_Functions_Group1 |
sahilmgandhi | 18:6a4db94011d3 | 92 | * |
sahilmgandhi | 18:6a4db94011d3 | 93 | @verbatim |
sahilmgandhi | 18:6a4db94011d3 | 94 | =============================================================================== |
sahilmgandhi | 18:6a4db94011d3 | 95 | ##### Extended features functions ##### |
sahilmgandhi | 18:6a4db94011d3 | 96 | =============================================================================== |
sahilmgandhi | 18:6a4db94011d3 | 97 | [..] This section provides functions allowing to: |
sahilmgandhi | 18:6a4db94011d3 | 98 | (+) Configure the source, destination address and data length and |
sahilmgandhi | 18:6a4db94011d3 | 99 | Start MultiBuffer DMA transfer |
sahilmgandhi | 18:6a4db94011d3 | 100 | (+) Configure the source, destination address and data length and |
sahilmgandhi | 18:6a4db94011d3 | 101 | Start MultiBuffer DMA transfer with interrupt |
sahilmgandhi | 18:6a4db94011d3 | 102 | (+) Change on the fly the memory0 or memory1 address. |
sahilmgandhi | 18:6a4db94011d3 | 103 | |
sahilmgandhi | 18:6a4db94011d3 | 104 | @endverbatim |
sahilmgandhi | 18:6a4db94011d3 | 105 | * @{ |
sahilmgandhi | 18:6a4db94011d3 | 106 | */ |
sahilmgandhi | 18:6a4db94011d3 | 107 | |
sahilmgandhi | 18:6a4db94011d3 | 108 | |
sahilmgandhi | 18:6a4db94011d3 | 109 | /** |
sahilmgandhi | 18:6a4db94011d3 | 110 | * @brief Starts the multi_buffer DMA Transfer. |
sahilmgandhi | 18:6a4db94011d3 | 111 | * @param hdma : pointer to a DMA_HandleTypeDef structure that contains |
sahilmgandhi | 18:6a4db94011d3 | 112 | * the configuration information for the specified DMA Stream. |
sahilmgandhi | 18:6a4db94011d3 | 113 | * @param SrcAddress: The source memory Buffer address |
sahilmgandhi | 18:6a4db94011d3 | 114 | * @param DstAddress: The destination memory Buffer address |
sahilmgandhi | 18:6a4db94011d3 | 115 | * @param SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer |
sahilmgandhi | 18:6a4db94011d3 | 116 | * @param DataLength: The length of data to be transferred from source to destination |
sahilmgandhi | 18:6a4db94011d3 | 117 | * @retval HAL status |
sahilmgandhi | 18:6a4db94011d3 | 118 | */ |
sahilmgandhi | 18:6a4db94011d3 | 119 | HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength) |
sahilmgandhi | 18:6a4db94011d3 | 120 | { |
sahilmgandhi | 18:6a4db94011d3 | 121 | HAL_StatusTypeDef status = HAL_OK; |
sahilmgandhi | 18:6a4db94011d3 | 122 | |
sahilmgandhi | 18:6a4db94011d3 | 123 | /* Check the parameters */ |
sahilmgandhi | 18:6a4db94011d3 | 124 | assert_param(IS_DMA_BUFFER_SIZE(DataLength)); |
sahilmgandhi | 18:6a4db94011d3 | 125 | |
sahilmgandhi | 18:6a4db94011d3 | 126 | /* Memory-to-memory transfer not supported in double buffering mode */ |
sahilmgandhi | 18:6a4db94011d3 | 127 | if (hdma->Init.Direction == DMA_MEMORY_TO_MEMORY) |
sahilmgandhi | 18:6a4db94011d3 | 128 | { |
sahilmgandhi | 18:6a4db94011d3 | 129 | hdma->ErrorCode = HAL_DMA_ERROR_NOT_SUPPORTED; |
sahilmgandhi | 18:6a4db94011d3 | 130 | status = HAL_ERROR; |
sahilmgandhi | 18:6a4db94011d3 | 131 | } |
sahilmgandhi | 18:6a4db94011d3 | 132 | else |
sahilmgandhi | 18:6a4db94011d3 | 133 | { |
sahilmgandhi | 18:6a4db94011d3 | 134 | /* Process Locked */ |
sahilmgandhi | 18:6a4db94011d3 | 135 | __HAL_LOCK(hdma); |
sahilmgandhi | 18:6a4db94011d3 | 136 | |
sahilmgandhi | 18:6a4db94011d3 | 137 | if(HAL_DMA_STATE_READY == hdma->State) |
sahilmgandhi | 18:6a4db94011d3 | 138 | { |
sahilmgandhi | 18:6a4db94011d3 | 139 | /* Change DMA peripheral state */ |
sahilmgandhi | 18:6a4db94011d3 | 140 | hdma->State = HAL_DMA_STATE_BUSY; |
sahilmgandhi | 18:6a4db94011d3 | 141 | |
sahilmgandhi | 18:6a4db94011d3 | 142 | /* Enable the double buffer mode */ |
sahilmgandhi | 18:6a4db94011d3 | 143 | hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM; |
sahilmgandhi | 18:6a4db94011d3 | 144 | |
sahilmgandhi | 18:6a4db94011d3 | 145 | /* Configure DMA Stream destination address */ |
sahilmgandhi | 18:6a4db94011d3 | 146 | hdma->Instance->M1AR = SecondMemAddress; |
sahilmgandhi | 18:6a4db94011d3 | 147 | |
sahilmgandhi | 18:6a4db94011d3 | 148 | /* Configure the source, destination address and the data length */ |
sahilmgandhi | 18:6a4db94011d3 | 149 | DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength); |
sahilmgandhi | 18:6a4db94011d3 | 150 | |
sahilmgandhi | 18:6a4db94011d3 | 151 | /* Enable the peripheral */ |
sahilmgandhi | 18:6a4db94011d3 | 152 | __HAL_DMA_ENABLE(hdma); |
sahilmgandhi | 18:6a4db94011d3 | 153 | } |
sahilmgandhi | 18:6a4db94011d3 | 154 | else |
sahilmgandhi | 18:6a4db94011d3 | 155 | { |
sahilmgandhi | 18:6a4db94011d3 | 156 | /* Return error status */ |
sahilmgandhi | 18:6a4db94011d3 | 157 | status = HAL_BUSY; |
sahilmgandhi | 18:6a4db94011d3 | 158 | } |
sahilmgandhi | 18:6a4db94011d3 | 159 | } |
sahilmgandhi | 18:6a4db94011d3 | 160 | return status; |
sahilmgandhi | 18:6a4db94011d3 | 161 | } |
sahilmgandhi | 18:6a4db94011d3 | 162 | |
sahilmgandhi | 18:6a4db94011d3 | 163 | /** |
sahilmgandhi | 18:6a4db94011d3 | 164 | * @brief Starts the multi_buffer DMA Transfer with interrupt enabled. |
sahilmgandhi | 18:6a4db94011d3 | 165 | * @param hdma: pointer to a DMA_HandleTypeDef structure that contains |
sahilmgandhi | 18:6a4db94011d3 | 166 | * the configuration information for the specified DMA Stream. |
sahilmgandhi | 18:6a4db94011d3 | 167 | * @param SrcAddress: The source memory Buffer address |
sahilmgandhi | 18:6a4db94011d3 | 168 | * @param DstAddress: The destination memory Buffer address |
sahilmgandhi | 18:6a4db94011d3 | 169 | * @param SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer |
sahilmgandhi | 18:6a4db94011d3 | 170 | * @param DataLength: The length of data to be transferred from source to destination |
sahilmgandhi | 18:6a4db94011d3 | 171 | * @retval HAL status |
sahilmgandhi | 18:6a4db94011d3 | 172 | */ |
sahilmgandhi | 18:6a4db94011d3 | 173 | HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength) |
sahilmgandhi | 18:6a4db94011d3 | 174 | { |
sahilmgandhi | 18:6a4db94011d3 | 175 | HAL_StatusTypeDef status = HAL_OK; |
sahilmgandhi | 18:6a4db94011d3 | 176 | |
sahilmgandhi | 18:6a4db94011d3 | 177 | /* Check the parameters */ |
sahilmgandhi | 18:6a4db94011d3 | 178 | assert_param(IS_DMA_BUFFER_SIZE(DataLength)); |
sahilmgandhi | 18:6a4db94011d3 | 179 | |
sahilmgandhi | 18:6a4db94011d3 | 180 | /* Memory-to-memory transfer not supported in double buffering mode */ |
sahilmgandhi | 18:6a4db94011d3 | 181 | if (hdma->Init.Direction == DMA_MEMORY_TO_MEMORY) |
sahilmgandhi | 18:6a4db94011d3 | 182 | { |
sahilmgandhi | 18:6a4db94011d3 | 183 | hdma->ErrorCode = HAL_DMA_ERROR_NOT_SUPPORTED; |
sahilmgandhi | 18:6a4db94011d3 | 184 | return HAL_ERROR; |
sahilmgandhi | 18:6a4db94011d3 | 185 | } |
sahilmgandhi | 18:6a4db94011d3 | 186 | |
sahilmgandhi | 18:6a4db94011d3 | 187 | /* Check callback functions */ |
sahilmgandhi | 18:6a4db94011d3 | 188 | if ((NULL == hdma->XferCpltCallback) || (NULL == hdma->XferM1CpltCallback) || (NULL == hdma->XferErrorCallback)) |
sahilmgandhi | 18:6a4db94011d3 | 189 | { |
sahilmgandhi | 18:6a4db94011d3 | 190 | hdma->ErrorCode = HAL_DMA_ERROR_PARAM; |
sahilmgandhi | 18:6a4db94011d3 | 191 | return HAL_ERROR; |
sahilmgandhi | 18:6a4db94011d3 | 192 | } |
sahilmgandhi | 18:6a4db94011d3 | 193 | |
sahilmgandhi | 18:6a4db94011d3 | 194 | /* Process locked */ |
sahilmgandhi | 18:6a4db94011d3 | 195 | __HAL_LOCK(hdma); |
sahilmgandhi | 18:6a4db94011d3 | 196 | |
sahilmgandhi | 18:6a4db94011d3 | 197 | if(HAL_DMA_STATE_READY == hdma->State) |
sahilmgandhi | 18:6a4db94011d3 | 198 | { |
sahilmgandhi | 18:6a4db94011d3 | 199 | /* Change DMA peripheral state */ |
sahilmgandhi | 18:6a4db94011d3 | 200 | hdma->State = HAL_DMA_STATE_BUSY; |
sahilmgandhi | 18:6a4db94011d3 | 201 | |
sahilmgandhi | 18:6a4db94011d3 | 202 | /* Initialize the error code */ |
sahilmgandhi | 18:6a4db94011d3 | 203 | hdma->ErrorCode = HAL_DMA_ERROR_NONE; |
sahilmgandhi | 18:6a4db94011d3 | 204 | |
sahilmgandhi | 18:6a4db94011d3 | 205 | /* Enable the Double buffer mode */ |
sahilmgandhi | 18:6a4db94011d3 | 206 | hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM; |
sahilmgandhi | 18:6a4db94011d3 | 207 | |
sahilmgandhi | 18:6a4db94011d3 | 208 | /* Configure DMA Stream destination address */ |
sahilmgandhi | 18:6a4db94011d3 | 209 | hdma->Instance->M1AR = SecondMemAddress; |
sahilmgandhi | 18:6a4db94011d3 | 210 | |
sahilmgandhi | 18:6a4db94011d3 | 211 | /* Configure the source, destination address and the data length */ |
sahilmgandhi | 18:6a4db94011d3 | 212 | DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength); |
sahilmgandhi | 18:6a4db94011d3 | 213 | |
sahilmgandhi | 18:6a4db94011d3 | 214 | /* Clear all flags */ |
sahilmgandhi | 18:6a4db94011d3 | 215 | __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma)); |
sahilmgandhi | 18:6a4db94011d3 | 216 | __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma)); |
sahilmgandhi | 18:6a4db94011d3 | 217 | __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma)); |
sahilmgandhi | 18:6a4db94011d3 | 218 | __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_DME_FLAG_INDEX(hdma)); |
sahilmgandhi | 18:6a4db94011d3 | 219 | __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_FE_FLAG_INDEX(hdma)); |
sahilmgandhi | 18:6a4db94011d3 | 220 | |
sahilmgandhi | 18:6a4db94011d3 | 221 | /* Enable Common interrupts*/ |
sahilmgandhi | 18:6a4db94011d3 | 222 | hdma->Instance->CR |= DMA_IT_TC | DMA_IT_TE | DMA_IT_DME; |
sahilmgandhi | 18:6a4db94011d3 | 223 | hdma->Instance->FCR |= DMA_IT_FE; |
sahilmgandhi | 18:6a4db94011d3 | 224 | |
sahilmgandhi | 18:6a4db94011d3 | 225 | if((hdma->XferHalfCpltCallback != NULL) || (hdma->XferM1HalfCpltCallback != NULL)) |
sahilmgandhi | 18:6a4db94011d3 | 226 | { |
sahilmgandhi | 18:6a4db94011d3 | 227 | hdma->Instance->CR |= DMA_IT_HT; |
sahilmgandhi | 18:6a4db94011d3 | 228 | } |
sahilmgandhi | 18:6a4db94011d3 | 229 | |
sahilmgandhi | 18:6a4db94011d3 | 230 | /* Enable the peripheral */ |
sahilmgandhi | 18:6a4db94011d3 | 231 | __HAL_DMA_ENABLE(hdma); |
sahilmgandhi | 18:6a4db94011d3 | 232 | } |
sahilmgandhi | 18:6a4db94011d3 | 233 | else |
sahilmgandhi | 18:6a4db94011d3 | 234 | { |
sahilmgandhi | 18:6a4db94011d3 | 235 | /* Process unlocked */ |
sahilmgandhi | 18:6a4db94011d3 | 236 | __HAL_UNLOCK(hdma); |
sahilmgandhi | 18:6a4db94011d3 | 237 | |
sahilmgandhi | 18:6a4db94011d3 | 238 | /* Return error status */ |
sahilmgandhi | 18:6a4db94011d3 | 239 | status = HAL_BUSY; |
sahilmgandhi | 18:6a4db94011d3 | 240 | } |
sahilmgandhi | 18:6a4db94011d3 | 241 | return status; |
sahilmgandhi | 18:6a4db94011d3 | 242 | } |
sahilmgandhi | 18:6a4db94011d3 | 243 | |
sahilmgandhi | 18:6a4db94011d3 | 244 | /** |
sahilmgandhi | 18:6a4db94011d3 | 245 | * @brief Change the memory0 or memory1 address on the fly. |
sahilmgandhi | 18:6a4db94011d3 | 246 | * @param hdma: pointer to a DMA_HandleTypeDef structure that contains |
sahilmgandhi | 18:6a4db94011d3 | 247 | * the configuration information for the specified DMA Stream. |
sahilmgandhi | 18:6a4db94011d3 | 248 | * @param Address: The new address |
sahilmgandhi | 18:6a4db94011d3 | 249 | * @param memory: the memory to be changed, This parameter can be one of |
sahilmgandhi | 18:6a4db94011d3 | 250 | * the following values: |
sahilmgandhi | 18:6a4db94011d3 | 251 | * MEMORY0 / |
sahilmgandhi | 18:6a4db94011d3 | 252 | * MEMORY1 |
sahilmgandhi | 18:6a4db94011d3 | 253 | * @note The MEMORY0 address can be changed only when the current transfer use |
sahilmgandhi | 18:6a4db94011d3 | 254 | * MEMORY1 and the MEMORY1 address can be changed only when the current |
sahilmgandhi | 18:6a4db94011d3 | 255 | * transfer use MEMORY0. |
sahilmgandhi | 18:6a4db94011d3 | 256 | * @retval HAL status |
sahilmgandhi | 18:6a4db94011d3 | 257 | */ |
sahilmgandhi | 18:6a4db94011d3 | 258 | HAL_StatusTypeDef HAL_DMAEx_ChangeMemory(DMA_HandleTypeDef *hdma, uint32_t Address, HAL_DMA_MemoryTypeDef memory) |
sahilmgandhi | 18:6a4db94011d3 | 259 | { |
sahilmgandhi | 18:6a4db94011d3 | 260 | if(memory == MEMORY0) |
sahilmgandhi | 18:6a4db94011d3 | 261 | { |
sahilmgandhi | 18:6a4db94011d3 | 262 | /* change the memory0 address */ |
sahilmgandhi | 18:6a4db94011d3 | 263 | hdma->Instance->M0AR = Address; |
sahilmgandhi | 18:6a4db94011d3 | 264 | } |
sahilmgandhi | 18:6a4db94011d3 | 265 | else |
sahilmgandhi | 18:6a4db94011d3 | 266 | { |
sahilmgandhi | 18:6a4db94011d3 | 267 | /* change the memory1 address */ |
sahilmgandhi | 18:6a4db94011d3 | 268 | hdma->Instance->M1AR = Address; |
sahilmgandhi | 18:6a4db94011d3 | 269 | } |
sahilmgandhi | 18:6a4db94011d3 | 270 | |
sahilmgandhi | 18:6a4db94011d3 | 271 | return HAL_OK; |
sahilmgandhi | 18:6a4db94011d3 | 272 | } |
sahilmgandhi | 18:6a4db94011d3 | 273 | |
sahilmgandhi | 18:6a4db94011d3 | 274 | /** |
sahilmgandhi | 18:6a4db94011d3 | 275 | * @} |
sahilmgandhi | 18:6a4db94011d3 | 276 | */ |
sahilmgandhi | 18:6a4db94011d3 | 277 | |
sahilmgandhi | 18:6a4db94011d3 | 278 | /** |
sahilmgandhi | 18:6a4db94011d3 | 279 | * @} |
sahilmgandhi | 18:6a4db94011d3 | 280 | */ |
sahilmgandhi | 18:6a4db94011d3 | 281 | |
sahilmgandhi | 18:6a4db94011d3 | 282 | /** @addtogroup DMAEx_Private_Functions |
sahilmgandhi | 18:6a4db94011d3 | 283 | * @{ |
sahilmgandhi | 18:6a4db94011d3 | 284 | */ |
sahilmgandhi | 18:6a4db94011d3 | 285 | |
sahilmgandhi | 18:6a4db94011d3 | 286 | /** |
sahilmgandhi | 18:6a4db94011d3 | 287 | * @brief Set the DMA Transfer parameter. |
sahilmgandhi | 18:6a4db94011d3 | 288 | * @param hdma: pointer to a DMA_HandleTypeDef structure that contains |
sahilmgandhi | 18:6a4db94011d3 | 289 | * the configuration information for the specified DMA Stream. |
sahilmgandhi | 18:6a4db94011d3 | 290 | * @param SrcAddress: The source memory Buffer address |
sahilmgandhi | 18:6a4db94011d3 | 291 | * @param DstAddress: The destination memory Buffer address |
sahilmgandhi | 18:6a4db94011d3 | 292 | * @param DataLength: The length of data to be transferred from source to destination |
sahilmgandhi | 18:6a4db94011d3 | 293 | * @retval HAL status |
sahilmgandhi | 18:6a4db94011d3 | 294 | */ |
sahilmgandhi | 18:6a4db94011d3 | 295 | static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength) |
sahilmgandhi | 18:6a4db94011d3 | 296 | { |
sahilmgandhi | 18:6a4db94011d3 | 297 | /* Configure DMA Stream data length */ |
sahilmgandhi | 18:6a4db94011d3 | 298 | hdma->Instance->NDTR = DataLength; |
sahilmgandhi | 18:6a4db94011d3 | 299 | |
sahilmgandhi | 18:6a4db94011d3 | 300 | /* Peripheral to Memory */ |
sahilmgandhi | 18:6a4db94011d3 | 301 | if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH) |
sahilmgandhi | 18:6a4db94011d3 | 302 | { |
sahilmgandhi | 18:6a4db94011d3 | 303 | /* Configure DMA Stream destination address */ |
sahilmgandhi | 18:6a4db94011d3 | 304 | hdma->Instance->PAR = DstAddress; |
sahilmgandhi | 18:6a4db94011d3 | 305 | |
sahilmgandhi | 18:6a4db94011d3 | 306 | /* Configure DMA Stream source address */ |
sahilmgandhi | 18:6a4db94011d3 | 307 | hdma->Instance->M0AR = SrcAddress; |
sahilmgandhi | 18:6a4db94011d3 | 308 | } |
sahilmgandhi | 18:6a4db94011d3 | 309 | /* Memory to Peripheral */ |
sahilmgandhi | 18:6a4db94011d3 | 310 | else |
sahilmgandhi | 18:6a4db94011d3 | 311 | { |
sahilmgandhi | 18:6a4db94011d3 | 312 | /* Configure DMA Stream source address */ |
sahilmgandhi | 18:6a4db94011d3 | 313 | hdma->Instance->PAR = SrcAddress; |
sahilmgandhi | 18:6a4db94011d3 | 314 | |
sahilmgandhi | 18:6a4db94011d3 | 315 | /* Configure DMA Stream destination address */ |
sahilmgandhi | 18:6a4db94011d3 | 316 | hdma->Instance->M0AR = DstAddress; |
sahilmgandhi | 18:6a4db94011d3 | 317 | } |
sahilmgandhi | 18:6a4db94011d3 | 318 | } |
sahilmgandhi | 18:6a4db94011d3 | 319 | |
sahilmgandhi | 18:6a4db94011d3 | 320 | /** |
sahilmgandhi | 18:6a4db94011d3 | 321 | * @} |
sahilmgandhi | 18:6a4db94011d3 | 322 | */ |
sahilmgandhi | 18:6a4db94011d3 | 323 | |
sahilmgandhi | 18:6a4db94011d3 | 324 | #endif /* HAL_DMA_MODULE_ENABLED */ |
sahilmgandhi | 18:6a4db94011d3 | 325 | /** |
sahilmgandhi | 18:6a4db94011d3 | 326 | * @} |
sahilmgandhi | 18:6a4db94011d3 | 327 | */ |
sahilmgandhi | 18:6a4db94011d3 | 328 | |
sahilmgandhi | 18:6a4db94011d3 | 329 | /** |
sahilmgandhi | 18:6a4db94011d3 | 330 | * @} |
sahilmgandhi | 18:6a4db94011d3 | 331 | */ |
sahilmgandhi | 18:6a4db94011d3 | 332 | |
sahilmgandhi | 18:6a4db94011d3 | 333 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |