Diff: targets/cmsis/TARGET_STM/TARGET_STM32F7/stm32f7xx_hal_dma_ex.c

Revision:

0:9b334a45a8ff

Child:

83:a036322b8637

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_STM32F7/stm32f7xx_hal_dma_ex.c	Thu Oct 01 15:25:22 2015 +0300
@@ -0,0 +1,301 @@
+/**
+  ******************************************************************************
+  * @file    stm32f7xx_hal_dma_ex.c
+  * @author  MCD Application Team
+  * @version V1.0.1
+  * @date    25-June-2015
+  * @brief   DMA Extension HAL module driver
+  *         This file provides firmware functions to manage the following 
+  *         functionalities of the DMA Extension peripheral:
+  *           + Extended features functions
+  *
+  @verbatim
+  ==============================================================================
+                        ##### How to use this driver #####
+  ==============================================================================
+  [..]
+  The DMA Extension HAL driver can be used as follows:
+   (+) Start a multi buffer transfer using the HAL_DMA_MultiBufferStart() function
+       for polling mode or HAL_DMA_MultiBufferStart_IT() for interrupt mode.
+                   
+     -@-  In Memory-to-Memory transfer mode, Multi (Double) Buffer mode is not allowed.
+     -@-  When Multi (Double) Buffer mode is enabled the, transfer is circular by default.
+     -@-  In Multi (Double) buffer mode, it is possible to update the base address for 
+          the AHB memory port on the fly (DMA_SxM0AR or DMA_SxM1AR) when the stream is enabled. 
+  
+  @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f7xx_hal.h"
+
+/** @addtogroup STM32F7xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup DMAEx DMAEx
+  * @brief DMA Extended HAL module driver
+  * @{
+  */
+
+#ifdef HAL_DMA_MODULE_ENABLED
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private Constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/** @addtogroup DMAEx_Private_Functions
+  * @{
+  */
+
+static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength);
+
+/**
+  * @brief  Set the DMA Transfer parameter.
+  * @param  hdma:       pointer to a DMA_HandleTypeDef structure that contains
+  *                     the configuration information for the specified DMA Stream.  
+  * @param  SrcAddress: The source memory Buffer address
+  * @param  DstAddress: The destination memory Buffer address
+  * @param  DataLength: The length of data to be transferred from source to destination
+  * @retval HAL status
+  */
+static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
+{  
+  /* Configure DMA Stream data length */
+  hdma->Instance->NDTR = DataLength;
+  
+  /* Peripheral to Memory */
+  if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH)
+  {   
+    /* Configure DMA Stream destination address */
+    hdma->Instance->PAR = DstAddress;
+    
+    /* Configure DMA Stream source address */
+    hdma->Instance->M0AR = SrcAddress;
+  }
+  /* Memory to Peripheral */
+  else
+  {
+    /* Configure DMA Stream source address */
+    hdma->Instance->PAR = SrcAddress;
+    
+    /* Configure DMA Stream destination address */
+    hdma->Instance->M0AR = DstAddress;
+  }
+}
+
+/**
+  * @}
+  */
+
+/* Exported functions ---------------------------------------------------------*/
+
+/** @addtogroup DMAEx_Exported_Functions
+  * @{
+  */
+
+
+/** @addtogroup DMAEx_Exported_Functions_Group1
+  *
+@verbatim   
+ ===============================================================================
+                #####  Extended features functions  #####
+ ===============================================================================  
+    [..]  This section provides functions allowing to:
+      (+) Configure the source, destination address and data length and 
+          Start MultiBuffer DMA transfer
+      (+) Configure the source, destination address and data length and 
+          Start MultiBuffer DMA transfer with interrupt
+      (+) Change on the fly the memory0 or memory1 address.
+      
+@endverbatim
+  * @{
+  */
+
+
+/**
+  * @brief  Starts the multi_buffer DMA Transfer.
+  * @param  hdma      : pointer to a DMA_HandleTypeDef structure that contains
+  *                     the configuration information for the specified DMA Stream.  
+  * @param  SrcAddress: The source memory Buffer address
+  * @param  DstAddress: The destination memory Buffer address
+  * @param  SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer  
+  * @param  DataLength: The length of data to be transferred from source to destination
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength)
+{
+  /* Process Locked */
+  __HAL_LOCK(hdma);
+
+  /* Current memory buffer used is Memory 0 */
+  if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
+  {
+    hdma->State = HAL_DMA_STATE_BUSY_MEM0;
+  }
+  /* Current memory buffer used is Memory 1 */
+  else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
+  {
+    hdma->State = HAL_DMA_STATE_BUSY_MEM1;
+  }
+
+   /* Check the parameters */
+  assert_param(IS_DMA_BUFFER_SIZE(DataLength));
+
+  /* Disable the peripheral */
+  __HAL_DMA_DISABLE(hdma);  
+
+  /* Enable the double buffer mode */
+  hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM;
+
+  /* Configure DMA Stream destination address */
+  hdma->Instance->M1AR = SecondMemAddress;
+
+  /* Configure the source, destination address and the data length */
+  DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength);
+
+  /* Enable the peripheral */
+  __HAL_DMA_ENABLE(hdma);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Starts the multi_buffer DMA Transfer with interrupt enabled.
+  * @param  hdma:       pointer to a DMA_HandleTypeDef structure that contains
+  *                     the configuration information for the specified DMA Stream.  
+  * @param  SrcAddress: The source memory Buffer address
+  * @param  DstAddress: The destination memory Buffer address
+  * @param  SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer  
+  * @param  DataLength: The length of data to be transferred from source to destination
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength)
+{
+  /* Process Locked */
+  __HAL_LOCK(hdma);
+
+  /* Current memory buffer used is Memory 0 */
+  if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
+  {
+    hdma->State = HAL_DMA_STATE_BUSY_MEM0;
+  }
+  /* Current memory buffer used is Memory 1 */
+  else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
+  {
+    hdma->State = HAL_DMA_STATE_BUSY_MEM1;
+  }
+
+  /* Check the parameters */
+  assert_param(IS_DMA_BUFFER_SIZE(DataLength));
+
+  /* Disable the peripheral */
+  __HAL_DMA_DISABLE(hdma);  
+
+  /* Enable the Double buffer mode */
+  hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM;
+
+  /* Configure DMA Stream destination address */
+  hdma->Instance->M1AR = SecondMemAddress;
+
+  /* Configure the source, destination address and the data length */
+  DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength); 
+
+  /* Enable the transfer complete interrupt */
+  __HAL_DMA_ENABLE_IT(hdma, DMA_IT_TC);
+
+  /* Enable the Half transfer interrupt */
+  __HAL_DMA_ENABLE_IT(hdma, DMA_IT_HT);
+
+  /* Enable the transfer Error interrupt */
+  __HAL_DMA_ENABLE_IT(hdma, DMA_IT_TE);
+
+  /* Enable the fifo Error interrupt */
+  __HAL_DMA_ENABLE_IT(hdma, DMA_IT_FE);  
+
+  /* Enable the direct mode Error interrupt */
+  __HAL_DMA_ENABLE_IT(hdma, DMA_IT_DME); 
+
+  /* Enable the peripheral */
+  __HAL_DMA_ENABLE(hdma); 
+
+  return HAL_OK; 
+}
+
+/**
+  * @brief  Change the memory0 or memory1 address on the fly.
+  * @param  hdma:       pointer to a DMA_HandleTypeDef structure that contains
+  *                     the configuration information for the specified DMA Stream.  
+  * @param  Address:    The new address
+  * @param  memory:     the memory to be changed, This parameter can be one of 
+  *                     the following values:
+  *                      MEMORY0 /
+  *                      MEMORY1
+  * @note   The MEMORY0 address can be changed only when the current transfer use
+  *         MEMORY1 and the MEMORY1 address can be changed only when the current 
+  *         transfer use MEMORY0.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DMAEx_ChangeMemory(DMA_HandleTypeDef *hdma, uint32_t Address, HAL_DMA_MemoryTypeDef memory)
+{
+  if(memory == MEMORY0)
+  {
+    /* change the memory0 address */
+    hdma->Instance->M0AR = Address;
+  }
+  else
+  {
+    /* change the memory1 address */
+    hdma->Instance->M1AR = Address;
+  }
+
+  return HAL_OK;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* HAL_DMA_MODULE_ENABLED */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/