--- /dev/null
+/**\r
+ ******************************************************************************\r
+ * @file stm32f7xx_hal_dma_ex.c\r
+ * @author MCD Application Team\r
+ * @version V0.3.0\r
+ * @date 06-March-2015\r
+ * @brief DMA Extension HAL module driver\r
+ * This file provides firmware functions to manage the following \r
+ * functionalities of the DMA Extension peripheral:\r
+ * + Extended features functions\r
+ *\r
+ @verbatim\r
+ ==============================================================================\r
+ ##### How to use this driver #####\r
+ ==============================================================================\r
+ [..]\r
+ The DMA Extension HAL driver can be used as follows:\r
+ (#) Start a multi buffer transfer using the HAL_DMA_MultiBufferStart() function\r
+ for polling mode or HAL_DMA_MultiBufferStart_IT() for interrupt mode.\r
+ \r
+ -@- In Memory-to-Memory transfer mode, Multi (Double) Buffer mode is not allowed.\r
+ -@- When Multi (Double) Buffer mode is enabled the, transfer is circular by default.\r
+ -@- In Multi (Double) buffer mode, it is possible to update the base address for \r
+ the AHB memory port on the fly (DMA_SxM0AR or DMA_SxM1AR) when the stream is enabled. \r
+ \r
+ @endverbatim\r
+ ******************************************************************************\r
+ * @attention\r
+ *\r
+ * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>\r
+ *\r
+ * Redistribution and use in source and binary forms, with or without modification,\r
+ * are permitted provided that the following conditions are met:\r
+ * 1. Redistributions of source code must retain the above copyright notice,\r
+ * this list of conditions and the following disclaimer.\r
+ * 2. Redistributions in binary form must reproduce the above copyright notice,\r
+ * this list of conditions and the following disclaimer in the documentation\r
+ * and/or other materials provided with the distribution.\r
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors\r
+ * may be used to endorse or promote products derived from this software\r
+ * without specific prior written permission.\r
+ *\r
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"\r
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\r
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE\r
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR\r
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER\r
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,\r
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\r
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
+ *\r
+ ******************************************************************************\r
+ */\r
+\r
+/* Includes ------------------------------------------------------------------*/\r
+#include "stm32f7xx_hal.h"\r
+\r
+/** @addtogroup STM32F7xx_HAL_Driver\r
+ * @{\r
+ */\r
+\r
+/** @defgroup DMAEx DMAEx\r
+ * @brief DMA Extended HAL module driver\r
+ * @{\r
+ */\r
+\r
+#ifdef HAL_DMA_MODULE_ENABLED\r
+\r
+/* Private types -------------------------------------------------------------*/\r
+/* Private variables ---------------------------------------------------------*/\r
+/* Private Constants ---------------------------------------------------------*/\r
+/* Private macros ------------------------------------------------------------*/\r
+/* Private functions ---------------------------------------------------------*/\r
+/** @addtogroup DMAEx_Private_Functions\r
+ * @{\r
+ */\r
+\r
+static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength);\r
+\r
+/**\r
+ * @brief Set the DMA Transfer parameter.\r
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains\r
+ * the configuration information for the specified DMA Stream. \r
+ * @param SrcAddress: The source memory Buffer address\r
+ * @param DstAddress: The destination memory Buffer address\r
+ * @param DataLength: The length of data to be transferred from source to destination\r
+ * @retval HAL status\r
+ */\r
+static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)\r
+{ \r
+ /* Configure DMA Stream data length */\r
+ hdma->Instance->NDTR = DataLength;\r
+ \r
+ /* Peripheral to Memory */\r
+ if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH)\r
+ { \r
+ /* Configure DMA Stream destination address */\r
+ hdma->Instance->PAR = DstAddress;\r
+ \r
+ /* Configure DMA Stream source address */\r
+ hdma->Instance->M0AR = SrcAddress;\r
+ }\r
+ /* Memory to Peripheral */\r
+ else\r
+ {\r
+ /* Configure DMA Stream source address */\r
+ hdma->Instance->PAR = SrcAddress;\r
+ \r
+ /* Configure DMA Stream destination address */\r
+ hdma->Instance->M0AR = DstAddress;\r
+ }\r
+}\r
+\r
+/**\r
+ * @}\r
+ */\r
+\r
+/* Exported functions ---------------------------------------------------------*/\r
+\r
+/** @addtogroup DMAEx_Exported_Functions\r
+ * @{\r
+ */\r
+\r
+\r
+/** @addtogroup DMAEx_Exported_Functions_Group1\r
+ *\r
+@verbatim \r
+ ===============================================================================\r
+ ##### Extended features functions #####\r
+ =============================================================================== \r
+ [..] This section provides functions allowing to:\r
+ (+) Configure the source, destination address and data length and \r
+ Start MultiBuffer DMA transfer\r
+ (+) Configure the source, destination address and data length and \r
+ Start MultiBuffer DMA transfer with interrupt\r
+ (+) Change on the fly the memory0 or memory1 address.\r
+ \r
+@endverbatim\r
+ * @{\r
+ */\r
+\r
+\r
+/**\r
+ * @brief Starts the multi_buffer DMA Transfer.\r
+ * @param hdma : pointer to a DMA_HandleTypeDef structure that contains\r
+ * the configuration information for the specified DMA Stream. \r
+ * @param SrcAddress: The source memory Buffer address\r
+ * @param DstAddress: The destination memory Buffer address\r
+ * @param SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer \r
+ * @param DataLength: The length of data to be transferred from source to destination\r
+ * @retval HAL status\r
+ */\r
+HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength)\r
+{\r
+ /* Process Locked */\r
+ __HAL_LOCK(hdma);\r
+\r
+ /* Current memory buffer used is Memory 0 */\r
+ if((hdma->Instance->CR & DMA_SxCR_CT) == 0)\r
+ {\r
+ hdma->State = HAL_DMA_STATE_BUSY_MEM0;\r
+ }\r
+ /* Current memory buffer used is Memory 1 */\r
+ else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)\r
+ {\r
+ hdma->State = HAL_DMA_STATE_BUSY_MEM1;\r
+ }\r
+\r
+ /* Check the parameters */\r
+ assert_param(IS_DMA_BUFFER_SIZE(DataLength));\r
+\r
+ /* Disable the peripheral */\r
+ __HAL_DMA_DISABLE(hdma); \r
+\r
+ /* Enable the double buffer mode */\r
+ hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM;\r
+\r
+ /* Configure DMA Stream destination address */\r
+ hdma->Instance->M1AR = SecondMemAddress;\r
+\r
+ /* Configure the source, destination address and the data length */\r
+ DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength);\r
+\r
+ /* Enable the peripheral */\r
+ __HAL_DMA_ENABLE(hdma);\r
+\r
+ return HAL_OK;\r
+}\r
+\r
+/**\r
+ * @brief Starts the multi_buffer DMA Transfer with interrupt enabled.\r
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains\r
+ * the configuration information for the specified DMA Stream. \r
+ * @param SrcAddress: The source memory Buffer address\r
+ * @param DstAddress: The destination memory Buffer address\r
+ * @param SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer \r
+ * @param DataLength: The length of data to be transferred from source to destination\r
+ * @retval HAL status\r
+ */\r
+HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength)\r
+{\r
+ /* Process Locked */\r
+ __HAL_LOCK(hdma);\r
+\r
+ /* Current memory buffer used is Memory 0 */\r
+ if((hdma->Instance->CR & DMA_SxCR_CT) == 0)\r
+ {\r
+ hdma->State = HAL_DMA_STATE_BUSY_MEM0;\r
+ }\r
+ /* Current memory buffer used is Memory 1 */\r
+ else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)\r
+ {\r
+ hdma->State = HAL_DMA_STATE_BUSY_MEM1;\r
+ }\r
+\r
+ /* Check the parameters */\r
+ assert_param(IS_DMA_BUFFER_SIZE(DataLength));\r
+\r
+ /* Disable the peripheral */\r
+ __HAL_DMA_DISABLE(hdma); \r
+\r
+ /* Enable the Double buffer mode */\r
+ hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM;\r
+\r
+ /* Configure DMA Stream destination address */\r
+ hdma->Instance->M1AR = SecondMemAddress;\r
+\r
+ /* Configure the source, destination address and the data length */\r
+ DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength); \r
+\r
+ /* Enable the transfer complete interrupt */\r
+ __HAL_DMA_ENABLE_IT(hdma, DMA_IT_TC);\r
+\r
+ /* Enable the Half transfer interrupt */\r
+ __HAL_DMA_ENABLE_IT(hdma, DMA_IT_HT);\r
+\r
+ /* Enable the transfer Error interrupt */\r
+ __HAL_DMA_ENABLE_IT(hdma, DMA_IT_TE);\r
+\r
+ /* Enable the fifo Error interrupt */\r
+ __HAL_DMA_ENABLE_IT(hdma, DMA_IT_FE); \r
+\r
+ /* Enable the direct mode Error interrupt */\r
+ __HAL_DMA_ENABLE_IT(hdma, DMA_IT_DME); \r
+\r
+ /* Enable the peripheral */\r
+ __HAL_DMA_ENABLE(hdma); \r
+\r
+ return HAL_OK; \r
+}\r
+\r
+/**\r
+ * @brief Change the memory0 or memory1 address on the fly.\r
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains\r
+ * the configuration information for the specified DMA Stream. \r
+ * @param Address: The new address\r
+ * @param memory: the memory to be changed, This parameter can be one of \r
+ * the following values:\r
+ * MEMORY0 /\r
+ * MEMORY1\r
+ * @note The MEMORY0 address can be changed only when the current transfer use\r
+ * MEMORY1 and the MEMORY1 address can be changed only when the current \r
+ * transfer use MEMORY0.\r
+ * @retval HAL status\r
+ */\r
+HAL_StatusTypeDef HAL_DMAEx_ChangeMemory(DMA_HandleTypeDef *hdma, uint32_t Address, HAL_DMA_MemoryTypeDef memory)\r
+{\r
+ if(memory == MEMORY0)\r
+ {\r
+ /* change the memory0 address */\r
+ hdma->Instance->M0AR = Address;\r
+ }\r
+ else\r
+ {\r
+ /* change the memory1 address */\r
+ hdma->Instance->M1AR = Address;\r
+ }\r
+\r
+ return HAL_OK;\r
+}\r
+\r
+/**\r
+ * @}\r
+ */\r
+\r
+/**\r
+ * @}\r
+ */\r
+\r
+#endif /* HAL_DMA_MODULE_ENABLED */\r
+/**\r
+ * @}\r
+ */\r
+\r
+/**\r
+ * @}\r
+ */\r
+\r
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/\r
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