[303] | 1 | /**
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| 2 | ******************************************************************************
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| 3 | * @file stm32f4xx_hal_dma_ex.c
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| 4 | * @author MCD Application Team
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| 5 | * @version V1.4.1
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| 6 | * @date 09-October-2015
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| 7 | * @brief DMA Extension HAL module driver
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| 8 | * This file provides firmware functions to manage the following
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| 9 | * functionalities of the DMA Extension peripheral:
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| 10 | * + Extended features functions
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| 11 | *
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| 12 | @verbatim
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| 13 | ==============================================================================
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| 14 | ##### How to use this driver #####
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| 15 | ==============================================================================
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| 16 | [..]
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| 17 | The DMA Extension HAL driver can be used as follows:
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| 18 | (#) Start a multi buffer transfer using the HAL_DMA_MultiBufferStart() function
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| 19 | for polling mode or HAL_DMA_MultiBufferStart_IT() for interrupt mode.
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| 20 |
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| 21 | -@- In Memory-to-Memory transfer mode, Multi (Double) Buffer mode is not allowed.
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| 22 | -@- When Multi (Double) Buffer mode is enabled the, transfer is circular by default.
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| 23 | -@- In Multi (Double) buffer mode, it is possible to update the base address for
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| 24 | the AHB memory port on the fly (DMA_SxM0AR or DMA_SxM1AR) when the stream is enabled.
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| 25 |
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| 26 | @endverbatim
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| 27 | ******************************************************************************
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| 28 | * @attention
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| 29 | *
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| 30 | * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
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| 31 | *
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| 32 | * Redistribution and use in source and binary forms, with or without modification,
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| 33 | * are permitted provided that the following conditions are met:
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| 34 | * 1. Redistributions of source code must retain the above copyright notice,
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| 35 | * this list of conditions and the following disclaimer.
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| 36 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 37 | * this list of conditions and the following disclaimer in the documentation
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| 38 | * and/or other materials provided with the distribution.
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| 39 | * 3. Neither the name of STMicroelectronics nor the names of its contributors
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| 40 | * may be used to endorse or promote products derived from this software
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| 41 | * without specific prior written permission.
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| 42 | *
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| 43 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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| 44 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 45 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 46 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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| 47 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 48 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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| 49 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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| 50 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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| 51 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| 52 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 53 | *
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| 54 | ******************************************************************************
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| 55 | */
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| 56 |
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| 57 | /* Includes ------------------------------------------------------------------*/
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| 58 | #include "stm32f4xx_hal.h"
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| 59 |
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| 60 | /** @addtogroup STM32F4xx_HAL_Driver
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| 61 | * @{
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| 62 | */
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| 63 |
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| 64 | /** @defgroup DMAEx DMAEx
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| 65 | * @brief DMA Extended HAL module driver
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| 66 | * @{
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| 67 | */
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| 68 |
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| 69 | #ifdef HAL_DMA_MODULE_ENABLED
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| 70 |
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| 71 | /* Private types -------------------------------------------------------------*/
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| 72 | /* Private variables ---------------------------------------------------------*/
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| 73 | /* Private Constants ---------------------------------------------------------*/
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| 74 | /* Private macros ------------------------------------------------------------*/
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| 75 | /* Private functions ---------------------------------------------------------*/
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| 76 | /** @addtogroup DMAEx_Private_Functions
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| 77 | * @{
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| 78 | */
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| 79 | static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength);
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| 80 | /**
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| 81 | * @}
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| 82 | */
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| 83 |
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| 84 | /* Exported functions ---------------------------------------------------------*/
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| 85 |
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| 86 | /** @addtogroup DMAEx_Exported_Functions
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| 87 | * @{
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| 88 | */
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| 89 |
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| 90 |
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| 91 | /** @addtogroup DMAEx_Exported_Functions_Group1
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| 92 | *
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| 93 | @verbatim
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| 94 | ===============================================================================
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| 95 | ##### Extended features functions #####
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| 96 | ===============================================================================
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| 97 | [..] This section provides functions allowing to:
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| 98 | (+) Configure the source, destination address and data length and
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| 99 | Start MultiBuffer DMA transfer
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| 100 | (+) Configure the source, destination address and data length and
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| 101 | Start MultiBuffer DMA transfer with interrupt
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| 102 | (+) Change on the fly the memory0 or memory1 address.
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| 103 |
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| 104 | @endverbatim
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| 105 | * @{
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| 106 | */
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| 107 |
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| 108 |
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| 109 | /**
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| 110 | * @brief Starts the multi_buffer DMA Transfer.
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| 111 | * @param hdma : pointer to a DMA_HandleTypeDef structure that contains
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| 112 | * the configuration information for the specified DMA Stream.
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| 113 | * @param SrcAddress: The source memory Buffer address
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| 114 | * @param DstAddress: The destination memory Buffer address
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| 115 | * @param SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer
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| 116 | * @param DataLength: The length of data to be transferred from source to destination
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| 117 | * @retval HAL status
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| 118 | */
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| 119 | HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength)
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| 120 | {
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| 121 | /* Process Locked */
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| 122 | __HAL_LOCK(hdma);
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| 123 |
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| 124 | /* Current memory buffer used is Memory 0 */
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| 125 | if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
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| 126 | {
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| 127 | hdma->State = HAL_DMA_STATE_BUSY_MEM0;
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| 128 | }
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| 129 | /* Current memory buffer used is Memory 1 */
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| 130 | else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
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| 131 | {
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| 132 | hdma->State = HAL_DMA_STATE_BUSY_MEM1;
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| 133 | }
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| 134 |
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| 135 | /* Check the parameters */
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| 136 | assert_param(IS_DMA_BUFFER_SIZE(DataLength));
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| 137 |
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| 138 | /* Disable the peripheral */
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| 139 | __HAL_DMA_DISABLE(hdma);
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| 140 |
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| 141 | /* Enable the double buffer mode */
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| 142 | hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM;
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| 143 |
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| 144 | /* Configure DMA Stream destination address */
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| 145 | hdma->Instance->M1AR = SecondMemAddress;
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| 146 |
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| 147 | /* Configure the source, destination address and the data length */
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| 148 | DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength);
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| 149 |
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| 150 | /* Enable the peripheral */
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| 151 | __HAL_DMA_ENABLE(hdma);
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| 152 |
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| 153 | return HAL_OK;
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| 154 | }
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| 155 |
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| 156 | /**
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| 157 | * @brief Starts the multi_buffer DMA Transfer with interrupt enabled.
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| 158 | * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
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| 159 | * the configuration information for the specified DMA Stream.
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| 160 | * @param SrcAddress: The source memory Buffer address
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| 161 | * @param DstAddress: The destination memory Buffer address
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| 162 | * @param SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer
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| 163 | * @param DataLength: The length of data to be transferred from source to destination
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| 164 | * @retval HAL status
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| 165 | */
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| 166 | HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength)
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| 167 | {
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| 168 | /* Process Locked */
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| 169 | __HAL_LOCK(hdma);
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| 170 |
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| 171 | /* Current memory buffer used is Memory 0 */
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| 172 | if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
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| 173 | {
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| 174 | hdma->State = HAL_DMA_STATE_BUSY_MEM0;
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| 175 | }
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| 176 | /* Current memory buffer used is Memory 1 */
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| 177 | else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
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| 178 | {
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| 179 | hdma->State = HAL_DMA_STATE_BUSY_MEM1;
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| 180 | }
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| 181 |
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| 182 | /* Check the parameters */
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| 183 | assert_param(IS_DMA_BUFFER_SIZE(DataLength));
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| 184 |
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| 185 | /* Disable the peripheral */
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| 186 | __HAL_DMA_DISABLE(hdma);
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| 187 |
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| 188 | /* Enable the Double buffer mode */
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| 189 | hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM;
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| 190 |
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| 191 | /* Configure DMA Stream destination address */
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| 192 | hdma->Instance->M1AR = SecondMemAddress;
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| 193 |
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| 194 | /* Configure the source, destination address and the data length */
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| 195 | DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength);
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| 196 |
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| 197 | /* Enable the transfer complete interrupt */
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| 198 | __HAL_DMA_ENABLE_IT(hdma, DMA_IT_TC);
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| 199 |
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| 200 | /* Enable the Half transfer interrupt */
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| 201 | __HAL_DMA_ENABLE_IT(hdma, DMA_IT_HT);
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| 202 |
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| 203 | /* Enable the transfer Error interrupt */
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| 204 | __HAL_DMA_ENABLE_IT(hdma, DMA_IT_TE);
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| 205 |
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| 206 | /* Enable the fifo Error interrupt */
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| 207 | __HAL_DMA_ENABLE_IT(hdma, DMA_IT_FE);
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| 208 |
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| 209 | /* Enable the direct mode Error interrupt */
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| 210 | __HAL_DMA_ENABLE_IT(hdma, DMA_IT_DME);
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| 211 |
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| 212 | /* Enable the peripheral */
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| 213 | __HAL_DMA_ENABLE(hdma);
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| 214 |
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| 215 | return HAL_OK;
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| 216 | }
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| 217 |
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| 218 | /**
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| 219 | * @brief Change the memory0 or memory1 address on the fly.
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| 220 | * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
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| 221 | * the configuration information for the specified DMA Stream.
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| 222 | * @param Address: The new address
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| 223 | * @param memory: the memory to be changed, This parameter can be one of
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| 224 | * the following values:
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| 225 | * MEMORY0 /
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| 226 | * MEMORY1
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| 227 | * @note The MEMORY0 address can be changed only when the current transfer use
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| 228 | * MEMORY1 and the MEMORY1 address can be changed only when the current
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| 229 | * transfer use MEMORY0.
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| 230 | * @retval HAL status
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| 231 | */
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| 232 | HAL_StatusTypeDef HAL_DMAEx_ChangeMemory(DMA_HandleTypeDef *hdma, uint32_t Address, HAL_DMA_MemoryTypeDef memory)
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| 233 | {
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| 234 | if(memory == MEMORY0)
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| 235 | {
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| 236 | /* change the memory0 address */
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| 237 | hdma->Instance->M0AR = Address;
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| 238 | }
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| 239 | else
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| 240 | {
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| 241 | /* change the memory1 address */
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| 242 | hdma->Instance->M1AR = Address;
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| 243 | }
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| 244 |
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| 245 | return HAL_OK;
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| 246 | }
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| 247 |
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| 248 | /**
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| 249 | * @}
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| 250 | */
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| 251 |
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| 252 | /**
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| 253 | * @}
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| 254 | */
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| 255 |
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| 256 | /** @addtogroup DMAEx_Private_Functions
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| 257 | * @{
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| 258 | */
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| 259 |
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| 260 | /**
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| 261 | * @brief Set the DMA Transfer parameter.
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| 262 | * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
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| 263 | * the configuration information for the specified DMA Stream.
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| 264 | * @param SrcAddress: The source memory Buffer address
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| 265 | * @param DstAddress: The destination memory Buffer address
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| 266 | * @param DataLength: The length of data to be transferred from source to destination
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| 267 | * @retval HAL status
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| 268 | */
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| 269 | static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
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| 270 | {
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| 271 | /* Configure DMA Stream data length */
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| 272 | hdma->Instance->NDTR = DataLength;
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| 273 |
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| 274 | /* Peripheral to Memory */
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| 275 | if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH)
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| 276 | {
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| 277 | /* Configure DMA Stream destination address */
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| 278 | hdma->Instance->PAR = DstAddress;
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| 279 |
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| 280 | /* Configure DMA Stream source address */
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| 281 | hdma->Instance->M0AR = SrcAddress;
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| 282 | }
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| 283 | /* Memory to Peripheral */
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| 284 | else
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| 285 | {
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| 286 | /* Configure DMA Stream source address */
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| 287 | hdma->Instance->PAR = SrcAddress;
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| 288 |
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| 289 | /* Configure DMA Stream destination address */
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| 290 | hdma->Instance->M0AR = DstAddress;
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| 291 | }
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| 292 | }
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| 293 |
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| 294 | /**
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| 295 | * @}
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| 296 | */
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| 297 |
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| 298 | #endif /* HAL_DMA_MODULE_ENABLED */
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| 299 | /**
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| 300 | * @}
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| 301 | */
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| 302 |
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| 303 | /**
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| 304 | * @}
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| 305 | */
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| 306 |
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| 307 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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