import mbed rtos library

1 files changed, 960 insertions, 0 deletions

diff --git a/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/stm32f4xx_hal_dma.c b/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/stm32f4xx_hal_dma.c
new file mode 100644
index 0000000..02fb1d5
--- /dev/null
+++ b/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/stm32f4xx_hal_dma.c
@@ -0,0 +1,960 @@
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_hal_dma.c
+  * @author  MCD Application Team
+  * @version V1.4.1
+  * @date    09-October-2015
+  * @brief   DMA HAL module driver.
+  *    
+  *          This file provides firmware functions to manage the following 
+  *          functionalities of the Direct Memory Access (DMA) peripheral:
+  *           + Initialization and de-initialization functions
+  *           + IO operation functions
+  *           + Peripheral State and errors functions
+  @verbatim     
+  ==============================================================================      
+                        ##### How to use this driver #####
+  ============================================================================== 
+  [..]
+   (#) Enable and configure the peripheral to be connected to the DMA Stream
+       (except for internal SRAM/FLASH memories: no initialization is 
+       necessary) please refer to Reference manual for connection between peripherals
+       and DMA requests . 
+          
+   (#) For a given Stream, program the required configuration through the following parameters:   
+       Transfer Direction, Source and Destination data formats, 
+       Circular, Normal or peripheral flow control mode, Stream Priority level, 
+       Source and Destination Increment mode, FIFO mode and its Threshold (if needed), 
+       Burst mode for Source and/or Destination (if needed) using HAL_DMA_Init() function.
+                     
+     *** Polling mode IO operation ***
+     =================================   
+    [..] 
+          (+) Use HAL_DMA_Start() to start DMA transfer after the configuration of Source 
+              address and destination address and the Length of data to be transferred
+          (+) Use HAL_DMA_PollForTransfer() to poll for the end of current transfer, in this  
+              case a fixed Timeout can be configured by User depending from his application.
+               
+     *** Interrupt mode IO operation ***    
+     =================================== 
+    [..]     
+          (+) Configure the DMA interrupt priority using HAL_NVIC_SetPriority()
+          (+) Enable the DMA IRQ handler using HAL_NVIC_EnableIRQ() 
+          (+) Use HAL_DMA_Start_IT() to start DMA transfer after the configuration of  
+              Source address and destination address and the Length of data to be transferred. In this 
+              case the DMA interrupt is configured 
+          (+) Use HAL_DMA_IRQHandler() called under DMA_IRQHandler() Interrupt subroutine
+          (+) At the end of data transfer HAL_DMA_IRQHandler() function is executed and user can 
+              add his own function by customization of function pointer XferCpltCallback and 
+              XferErrorCallback (i.e a member of DMA handle structure). 
+    [..]                
+     (#) Use HAL_DMA_GetState() function to return the DMA state and HAL_DMA_GetError() in case of error 
+         detection.
+         
+     (#) Use HAL_DMA_Abort() function to abort the current transfer
+     
+     -@-   In Memory-to-Memory transfer mode, Circular mode is not allowed.
+    
+     -@-   The FIFO is used mainly to reduce bus usage and to allow data packing/unpacking: it is
+           possible to set different Data Sizes for the Peripheral and the Memory (ie. you can set
+           Half-Word data size for the peripheral to access its data register and set Word data size
+           for the Memory to gain in access time. Each two half words will be packed and written in
+           a single access to a Word in the Memory).
+      
+     -@-   When FIFO is disabled, it is not allowed to configure different Data Sizes for Source
+           and Destination. In this case the Peripheral Data Size will be applied to both Source
+           and Destination.               
+  
+     *** DMA HAL driver macros list ***
+     ============================================= 
+     [..]
+       Below the list of most used macros in DMA HAL driver.
+       
+      (+) __HAL_DMA_ENABLE: Enable the specified DMA Stream.
+      (+) __HAL_DMA_DISABLE: Disable the specified DMA Stream.
+      (+) __HAL_DMA_GET_FS: Return the current DMA Stream FIFO filled level.
+      (+) __HAL_DMA_GET_FLAG: Get the DMA Stream pending flags.
+      (+) __HAL_DMA_CLEAR_FLAG: Clear the DMA Stream pending flags.
+      (+) __HAL_DMA_ENABLE_IT: Enable the specified DMA Stream interrupts.
+      (+) __HAL_DMA_DISABLE_IT: Disable the specified DMA Stream interrupts.
+      (+) __HAL_DMA_GET_IT_SOURCE: Check whether the specified DMA Stream interrupt has occurred or not. 
+     
+     [..] 
+      (@) You can refer to the DMA HAL driver header file for more useful macros  
+  
+  @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 "stm32f4xx_hal.h"
+
+/** @addtogroup STM32F4xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup DMA DMA
+  * @brief DMA HAL module driver
+  * @{
+  */
+
+#ifdef HAL_DMA_MODULE_ENABLED
+
+/* Private types -------------------------------------------------------------*/
+
+typedef struct
+{
+  __IO uint32_t ISR;   /*!< DMA interrupt status register */
+  __IO uint32_t Reserved0;
+  __IO uint32_t IFCR;  /*!< DMA interrupt flag clear register */
+} DMA_Base_Registers;
+
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/** @addtogroup DMA_Private_Constants
+ * @{
+ */
+ #define HAL_TIMEOUT_DMA_ABORT    ((uint32_t)1000)  /* 1s */
+/**
+  * @}
+  */
+/* Private macros ------------------------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/** @addtogroup DMA_Private_Functions
+  * @{
+  */
+static void DMA_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength);
+static uint32_t DMA_CalcBaseAndBitshift(DMA_HandleTypeDef *hdma);
+
+/**
+  * @}
+  */  
+  
+/* Exported functions ---------------------------------------------------------*/
+/** @addtogroup DMA_Exported_Functions
+  * @{
+  */
+
+/** @addtogroup DMA_Exported_Functions_Group1
+  *
+@verbatim   
+ ===============================================================================
+             ##### Initialization and de-initialization functions  #####
+ ===============================================================================  
+    [..]
+    This section provides functions allowing to initialize the DMA Stream source
+    and destination addresses, incrementation and data sizes, transfer direction, 
+    circular/normal mode selection, memory-to-memory mode selection and Stream priority value.
+    [..]
+    The HAL_DMA_Init() function follows the DMA configuration procedures as described in
+    reference manual.  
+
+@endverbatim
+  * @{
+  */
+  
+/**
+  * @brief  Initializes the DMA according to the specified
+  *         parameters in the DMA_InitTypeDef and create the associated handle.
+  * @param  hdma: Pointer to a DMA_HandleTypeDef structure that contains
+  *               the configuration information for the specified DMA Stream.  
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DMA_Init(DMA_HandleTypeDef *hdma)
+{
+  uint32_t tmp = 0;
+
+  /* Check the DMA peripheral state */
+  if(hdma == NULL)
+  {
+    return HAL_ERROR;
+  }
+
+  /* Check the parameters */
+  assert_param(IS_DMA_STREAM_ALL_INSTANCE(hdma->Instance));
+  assert_param(IS_DMA_CHANNEL(hdma->Init.Channel));
+  assert_param(IS_DMA_DIRECTION(hdma->Init.Direction));
+  assert_param(IS_DMA_PERIPHERAL_INC_STATE(hdma->Init.PeriphInc));
+  assert_param(IS_DMA_MEMORY_INC_STATE(hdma->Init.MemInc));
+  assert_param(IS_DMA_PERIPHERAL_DATA_SIZE(hdma->Init.PeriphDataAlignment));
+  assert_param(IS_DMA_MEMORY_DATA_SIZE(hdma->Init.MemDataAlignment));
+  assert_param(IS_DMA_MODE(hdma->Init.Mode));
+  assert_param(IS_DMA_PRIORITY(hdma->Init.Priority));
+  assert_param(IS_DMA_FIFO_MODE_STATE(hdma->Init.FIFOMode));
+  /* Check the memory burst, peripheral burst and FIFO threshold parameters only
+     when FIFO mode is enabled */
+  if(hdma->Init.FIFOMode != DMA_FIFOMODE_DISABLE)
+  {
+    assert_param(IS_DMA_FIFO_THRESHOLD(hdma->Init.FIFOThreshold));
+    assert_param(IS_DMA_MEMORY_BURST(hdma->Init.MemBurst));
+    assert_param(IS_DMA_PERIPHERAL_BURST(hdma->Init.PeriphBurst));
+  }
+
+  /* Change DMA peripheral state */
+  hdma->State = HAL_DMA_STATE_BUSY;
+
+  /* Get the CR register value */
+  tmp = hdma->Instance->CR;
+
+  /* Clear CHSEL, MBURST, PBURST, PL, MSIZE, PSIZE, MINC, PINC, CIRC, DIR, CT and DBM bits */
+  tmp &= ((uint32_t)~(DMA_SxCR_CHSEL | DMA_SxCR_MBURST | DMA_SxCR_PBURST | \
+                      DMA_SxCR_PL    | DMA_SxCR_MSIZE  | DMA_SxCR_PSIZE  | \
+                      DMA_SxCR_MINC  | DMA_SxCR_PINC   | DMA_SxCR_CIRC   | \
+                      DMA_SxCR_DIR   | DMA_SxCR_CT     | DMA_SxCR_DBM));
+
+  /* Prepare the DMA Stream configuration */
+  tmp |=  hdma->Init.Channel             | hdma->Init.Direction        |
+          hdma->Init.PeriphInc           | hdma->Init.MemInc           |
+          hdma->Init.PeriphDataAlignment | hdma->Init.MemDataAlignment |
+          hdma->Init.Mode                | hdma->Init.Priority;
+
+  /* the Memory burst and peripheral burst are not used when the FIFO is disabled */
+  if(hdma->Init.FIFOMode == DMA_FIFOMODE_ENABLE)
+  {
+    /* Get memory burst and peripheral burst */
+    tmp |=  hdma->Init.MemBurst | hdma->Init.PeriphBurst;
+  }
+  
+  /* Write to DMA Stream CR register */
+  hdma->Instance->CR = tmp;  
+
+  /* Get the FCR register value */
+  tmp = hdma->Instance->FCR;
+
+  /* Clear Direct mode and FIFO threshold bits */
+  tmp &= (uint32_t)~(DMA_SxFCR_DMDIS | DMA_SxFCR_FTH);
+
+  /* Prepare the DMA Stream FIFO configuration */
+  tmp |= hdma->Init.FIFOMode;
+
+  /* the FIFO threshold is not used when the FIFO mode is disabled */
+  if(hdma->Init.FIFOMode == DMA_FIFOMODE_ENABLE)
+  {
+    /* Get the FIFO threshold */
+    tmp |= hdma->Init.FIFOThreshold;
+  }
+  
+  /* Write to DMA Stream FCR */
+  hdma->Instance->FCR = tmp;
+
+  /* Initialize StreamBaseAddress and StreamIndex parameters to be used to calculate
+     DMA steam Base Address needed by HAL_DMA_IRQHandler() and HAL_DMA_PollForTransfer() */
+  DMA_CalcBaseAndBitshift(hdma);
+
+  /* Initialize the error code */
+  hdma->ErrorCode = HAL_DMA_ERROR_NONE;
+
+  /* Initialize the DMA state */
+  hdma->State = HAL_DMA_STATE_READY;
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  DeInitializes the DMA peripheral 
+  * @param  hdma: pointer to a DMA_HandleTypeDef structure that contains
+  *               the configuration information for the specified DMA Stream.  
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DMA_DeInit(DMA_HandleTypeDef *hdma)
+{
+  DMA_Base_Registers *regs;
+  
+  /* Check the DMA peripheral state */
+  if(hdma == NULL)
+  {
+    return HAL_ERROR;
+  }
+  
+  /* Check the DMA peripheral state */
+  if(hdma->State == HAL_DMA_STATE_BUSY)
+  {
+     return HAL_ERROR;
+  }
+
+  /* Disable the selected DMA Streamx */
+  __HAL_DMA_DISABLE(hdma);
+
+  /* Reset DMA Streamx control register */
+  hdma->Instance->CR   = 0;
+
+  /* Reset DMA Streamx number of data to transfer register */
+  hdma->Instance->NDTR = 0;
+
+  /* Reset DMA Streamx peripheral address register */
+  hdma->Instance->PAR  = 0;
+
+  /* Reset DMA Streamx memory 0 address register */
+  hdma->Instance->M0AR = 0;
+  
+  /* Reset DMA Streamx memory 1 address register */
+  hdma->Instance->M1AR = 0;
+  
+  /* Reset DMA Streamx FIFO control register */
+  hdma->Instance->FCR  = (uint32_t)0x00000021;
+  
+  /* Get DMA steam Base Address */  
+  regs = (DMA_Base_Registers *)DMA_CalcBaseAndBitshift(hdma);
+  
+  /* Clear all interrupt flags at correct offset within the register */
+  regs->IFCR = 0x3F << hdma->StreamIndex;
+
+  /* Initialize the error code */
+  hdma->ErrorCode = HAL_DMA_ERROR_NONE;
+
+  /* Initialize the DMA state */
+  hdma->State = HAL_DMA_STATE_RESET;
+
+  /* Release Lock */
+  __HAL_UNLOCK(hdma);
+
+  return HAL_OK;
+}
+
+/**
+  * @}
+  */
+
+/** @addtogroup DMA_Exported_Functions_Group2
+  *
+@verbatim   
+ ===============================================================================
+                      #####  IO operation functions  #####
+ ===============================================================================  
+    [..]  This section provides functions allowing to:
+      (+) Configure the source, destination address and data length and Start DMA transfer
+      (+) Configure the source, destination address and data length and 
+          Start DMA transfer with interrupt
+      (+) Abort DMA transfer
+      (+) Poll for transfer complete
+      (+) Handle DMA interrupt request  
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Starts the 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  DataLength: The length of data to be transferred from source to destination
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DMA_Start(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
+{
+  /* Process locked */
+  __HAL_LOCK(hdma);
+
+  /* Change DMA peripheral state */
+  hdma->State = HAL_DMA_STATE_BUSY;
+
+   /* Check the parameters */
+  assert_param(IS_DMA_BUFFER_SIZE(DataLength));
+
+  /* Disable the peripheral */
+  __HAL_DMA_DISABLE(hdma);
+
+  /* Configure the source, destination address and the data length */
+  DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength);
+
+  /* Enable the Peripheral */
+  __HAL_DMA_ENABLE(hdma);
+
+  return HAL_OK; 
+}
+
+/**
+  * @brief  Start the 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  DataLength: The length of data to be transferred from source to destination
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DMA_Start_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
+{
+  /* Process locked */
+  __HAL_LOCK(hdma);
+
+  /* Change DMA peripheral state */
+  hdma->State = HAL_DMA_STATE_BUSY;
+
+   /* Check the parameters */
+  assert_param(IS_DMA_BUFFER_SIZE(DataLength));
+
+  /* Disable the peripheral */
+  __HAL_DMA_DISABLE(hdma);
+
+  /* Configure the source, destination address and the data length */
+  DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength);
+
+  /* Enable all interrupts */
+  hdma->Instance->CR  |= DMA_IT_TC | DMA_IT_HT | DMA_IT_TE | DMA_IT_DME;
+  hdma->Instance->FCR |= DMA_IT_FE;
+
+   /* Enable the Peripheral */
+  __HAL_DMA_ENABLE(hdma);
+
+  return HAL_OK;
+} 
+
+/**
+  * @brief  Aborts the DMA Transfer.
+  * @param  hdma  : pointer to a DMA_HandleTypeDef structure that contains
+  *                 the configuration information for the specified DMA Stream.
+  *                   
+  * @note  After disabling a DMA Stream, a check for wait until the DMA Stream is 
+  *        effectively disabled is added. If a Stream is disabled 
+  *        while a data transfer is ongoing, the current data will be transferred
+  *        and the Stream will be effectively disabled only after the transfer of
+  *        this single data is finished.  
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DMA_Abort(DMA_HandleTypeDef *hdma)
+{
+  uint32_t tickstart = 0;
+
+  /* Disable the stream */
+  __HAL_DMA_DISABLE(hdma);
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  /* Check if the DMA Stream is effectively disabled */
+  while((hdma->Instance->CR & DMA_SxCR_EN) != 0)
+  {
+    /* Check for the Timeout */
+    if((HAL_GetTick() - tickstart ) > HAL_TIMEOUT_DMA_ABORT)
+    {
+      /* Update error code */
+      hdma->ErrorCode |= HAL_DMA_ERROR_TIMEOUT;
+      
+      /* Process Unlocked */
+      __HAL_UNLOCK(hdma);
+      
+      /* Change the DMA state */
+      hdma->State = HAL_DMA_STATE_TIMEOUT;
+      
+      return HAL_TIMEOUT;
+    }
+  }
+  /* Process Unlocked */
+  __HAL_UNLOCK(hdma);
+
+  /* Change the DMA state*/
+  hdma->State = HAL_DMA_STATE_READY;
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Polling for transfer complete.
+  * @param  hdma:          pointer to a DMA_HandleTypeDef structure that contains
+  *                        the configuration information for the specified DMA Stream.
+  * @param  CompleteLevel: Specifies the DMA level complete.  
+  * @param  Timeout:       Timeout duration.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DMA_PollForTransfer(DMA_HandleTypeDef *hdma, uint32_t CompleteLevel, uint32_t Timeout)
+{
+  uint32_t temp, tmp, tmp1, tmp2;
+  uint32_t tickstart = 0;
+
+  /* calculate DMA base and stream number */
+  DMA_Base_Registers *regs;
+  
+  regs = (DMA_Base_Registers *)hdma->StreamBaseAddress;
+
+  /* Get the level transfer complete flag */
+  if(CompleteLevel == HAL_DMA_FULL_TRANSFER)
+  {
+    /* Transfer Complete flag */
+    temp = DMA_FLAG_TCIF0_4 << hdma->StreamIndex;
+  }
+  else
+  {
+    /* Half Transfer Complete flag */
+    temp = DMA_FLAG_HTIF0_4 << hdma->StreamIndex;
+  }
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  while((regs->ISR & temp) == RESET)
+  {
+    tmp  = regs->ISR & (DMA_FLAG_TEIF0_4 << hdma->StreamIndex);
+    tmp1 = regs->ISR & (DMA_FLAG_FEIF0_4 << hdma->StreamIndex);
+    tmp2 = regs->ISR & (DMA_FLAG_DMEIF0_4 << hdma->StreamIndex);
+    if((tmp != RESET) || (tmp1 != RESET) || (tmp2 != RESET))
+    {
+      if(tmp != RESET)
+      {
+        /* Update error code */
+        hdma->ErrorCode |= HAL_DMA_ERROR_TE;
+
+        /* Clear the transfer error flag */
+        regs->IFCR = DMA_FLAG_TEIF0_4 << hdma->StreamIndex;
+      }
+      if(tmp1 != RESET)
+      {
+        /* Update error code */
+        hdma->ErrorCode |= HAL_DMA_ERROR_FE;
+
+        /* Clear the FIFO error flag */
+        regs->IFCR = DMA_FLAG_FEIF0_4 << hdma->StreamIndex;
+      }
+      if(tmp2 != RESET)
+      {
+        /* Update error code */
+        hdma->ErrorCode |= HAL_DMA_ERROR_DME;
+
+        /* Clear the Direct Mode error flag */
+        regs->IFCR = DMA_FLAG_DMEIF0_4 << hdma->StreamIndex;
+      }
+      /* Change the DMA state */
+      hdma->State= HAL_DMA_STATE_ERROR;
+
+      /* Process Unlocked */
+      __HAL_UNLOCK(hdma);
+
+      return HAL_ERROR;
+    }
+    /* Check for the Timeout */
+    if(Timeout != HAL_MAX_DELAY)
+    {
+      if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
+      {
+        /* Update error code */
+        hdma->ErrorCode |= HAL_DMA_ERROR_TIMEOUT;
+
+        /* Change the DMA state */
+        hdma->State = HAL_DMA_STATE_TIMEOUT;
+
+        /* Process Unlocked */
+        __HAL_UNLOCK(hdma);
+
+        return HAL_TIMEOUT;
+      }
+    }
+  }
+
+  if(CompleteLevel == HAL_DMA_FULL_TRANSFER)
+  {
+    /* Clear the half transfer and transfer complete flags */
+    regs->IFCR = (DMA_FLAG_HTIF0_4 | DMA_FLAG_TCIF0_4) << hdma->StreamIndex;
+
+    /* Multi_Buffering mode enabled */
+    if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0)
+    {
+      /* Current memory buffer used is Memory 0 */
+      if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
+      {
+        /* Change DMA peripheral state */
+        hdma->State = HAL_DMA_STATE_READY_MEM0;
+      }
+      /* Current memory buffer used is Memory 1 */
+      else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
+      {
+        /* Change DMA peripheral state */
+        hdma->State = HAL_DMA_STATE_READY_MEM1;
+      }
+    }
+    else
+    {
+      /* The selected Streamx EN bit is cleared (DMA is disabled and all transfers
+         are complete) */
+      hdma->State = HAL_DMA_STATE_READY_MEM0;
+    }
+    /* Process Unlocked */
+    __HAL_UNLOCK(hdma);
+  }
+  else
+  {
+    /* Clear the half transfer complete flag */
+    regs->IFCR = DMA_FLAG_HTIF0_4 << hdma->StreamIndex;
+
+    /* Multi_Buffering mode enabled */
+    if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0)
+    {
+      /* Current memory buffer used is Memory 0 */
+      if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
+      {
+        /* Change DMA peripheral state */
+        hdma->State = HAL_DMA_STATE_READY_HALF_MEM0;
+      }
+      /* Current memory buffer used is Memory 1 */
+      else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
+      {
+        /* Change DMA peripheral state */
+        hdma->State = HAL_DMA_STATE_READY_HALF_MEM1;
+      }
+    }
+    else
+    {
+      /* Change DMA peripheral state */
+      hdma->State = HAL_DMA_STATE_READY_HALF_MEM0;
+    }
+  }
+  return HAL_OK;
+}
+
+/**
+  * @brief  Handles DMA interrupt request.
+  * @param  hdma: pointer to a DMA_HandleTypeDef structure that contains
+  *               the configuration information for the specified DMA Stream.  
+  * @retval None
+  */
+void HAL_DMA_IRQHandler(DMA_HandleTypeDef *hdma)
+{
+  /* calculate DMA base and stream number */
+  DMA_Base_Registers *regs;
+
+  regs = (DMA_Base_Registers *)hdma->StreamBaseAddress;
+
+  /* Transfer Error Interrupt management ***************************************/
+  if ((regs->ISR & (DMA_FLAG_TEIF0_4 << hdma->StreamIndex)) != RESET)
+  {
+    if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TE) != RESET)
+    {
+      /* Disable the transfer error interrupt */
+      __HAL_DMA_DISABLE_IT(hdma, DMA_IT_TE);
+
+      /* Clear the transfer error flag */
+      regs->IFCR = DMA_FLAG_TEIF0_4 << hdma->StreamIndex;
+
+      /* Update error code */
+      hdma->ErrorCode |= HAL_DMA_ERROR_TE;
+
+      /* Change the DMA state */
+      hdma->State = HAL_DMA_STATE_ERROR;
+
+      /* Process Unlocked */
+      __HAL_UNLOCK(hdma);
+
+      if(hdma->XferErrorCallback != NULL)
+      {
+        /* Transfer error callback */
+        hdma->XferErrorCallback(hdma);
+      }
+    }
+  }
+  /* FIFO Error Interrupt management ******************************************/
+  if ((regs->ISR & (DMA_FLAG_FEIF0_4 << hdma->StreamIndex)) != RESET)
+  {
+    if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_FE) != RESET)
+    {
+      /* Disable the FIFO Error interrupt */
+      __HAL_DMA_DISABLE_IT(hdma, DMA_IT_FE);
+
+      /* Clear the FIFO error flag */
+      regs->IFCR = DMA_FLAG_FEIF0_4 << hdma->StreamIndex;
+
+      /* Update error code */
+      hdma->ErrorCode |= HAL_DMA_ERROR_FE;
+
+      /* Change the DMA state */
+      hdma->State = HAL_DMA_STATE_ERROR;
+
+      /* Process Unlocked */
+      __HAL_UNLOCK(hdma);
+
+      if(hdma->XferErrorCallback != NULL)
+      {
+        /* Transfer error callback */
+        hdma->XferErrorCallback(hdma);
+      }
+    }
+  }
+  /* Direct Mode Error Interrupt management ***********************************/
+  if ((regs->ISR & (DMA_FLAG_DMEIF0_4 << hdma->StreamIndex)) != RESET)
+  {
+    if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_DME) != RESET)
+    {
+      /* Disable the direct mode Error interrupt */
+      __HAL_DMA_DISABLE_IT(hdma, DMA_IT_DME);
+
+      /* Clear the direct mode error flag */
+      regs->IFCR = DMA_FLAG_DMEIF0_4 << hdma->StreamIndex;
+
+      /* Update error code */
+      hdma->ErrorCode |= HAL_DMA_ERROR_DME;
+
+      /* Change the DMA state */
+      hdma->State = HAL_DMA_STATE_ERROR;
+
+      /* Process Unlocked */
+      __HAL_UNLOCK(hdma);
+
+      if(hdma->XferErrorCallback != NULL)
+      {
+        /* Transfer error callback */
+        hdma->XferErrorCallback(hdma);
+      }
+    }
+  }
+  /* Half Transfer Complete Interrupt management ******************************/
+  if ((regs->ISR & (DMA_FLAG_HTIF0_4 << hdma->StreamIndex)) != RESET)
+  {
+    if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_HT) != RESET)
+    {
+      /* Multi_Buffering mode enabled */
+      if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0)
+      {
+        /* Clear the half transfer complete flag */
+        regs->IFCR = DMA_FLAG_HTIF0_4 << hdma->StreamIndex;
+
+        /* Current memory buffer used is Memory 0 */
+        if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
+        {
+          /* Change DMA peripheral state */
+          hdma->State = HAL_DMA_STATE_READY_HALF_MEM0;
+        }
+        /* Current memory buffer used is Memory 1 */
+        else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
+        {
+          /* Change DMA peripheral state */
+          hdma->State = HAL_DMA_STATE_READY_HALF_MEM1;
+        }
+      }
+      else
+      {
+        /* Disable the half transfer interrupt if the DMA mode is not CIRCULAR */
+        if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
+        {
+          /* Disable the half transfer interrupt */
+          __HAL_DMA_DISABLE_IT(hdma, DMA_IT_HT);
+        }
+        /* Clear the half transfer complete flag */
+        regs->IFCR = DMA_FLAG_HTIF0_4 << hdma->StreamIndex;
+
+        /* Change DMA peripheral state */
+        hdma->State = HAL_DMA_STATE_READY_HALF_MEM0;
+      }
+
+      if(hdma->XferHalfCpltCallback != NULL)
+      {
+        /* Half transfer callback */
+        hdma->XferHalfCpltCallback(hdma);
+      }
+    }
+  }
+  /* Transfer Complete Interrupt management ***********************************/
+  if ((regs->ISR & (DMA_FLAG_TCIF0_4 << hdma->StreamIndex)) != RESET)
+  {
+    if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TC) != RESET)
+    {
+      if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0)
+      {
+        /* Clear the transfer complete flag */
+        regs->IFCR = DMA_FLAG_TCIF0_4 << hdma->StreamIndex;
+
+        /* Current memory buffer used is Memory 1 */
+        if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
+        {
+          if(hdma->XferM1CpltCallback != NULL)
+          {
+            /* Transfer complete Callback for memory1 */
+            hdma->XferM1CpltCallback(hdma);
+          }
+        }
+        /* Current memory buffer used is Memory 0 */
+        else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
+        {
+          if(hdma->XferCpltCallback != NULL)
+          {
+            /* Transfer complete Callback for memory0 */
+            hdma->XferCpltCallback(hdma);
+          }
+        }
+      }
+      /* Disable the transfer complete interrupt if the DMA mode is not CIRCULAR */
+      else
+      {
+        if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
+        {
+          /* Disable the transfer complete interrupt */
+          __HAL_DMA_DISABLE_IT(hdma, DMA_IT_TC);
+        }
+        /* Clear the transfer complete flag */
+        regs->IFCR = DMA_FLAG_TCIF0_4 << hdma->StreamIndex;
+
+        /* Update error code */
+        hdma->ErrorCode |= HAL_DMA_ERROR_NONE;
+
+        /* Change the DMA state */
+        hdma->State = HAL_DMA_STATE_READY_MEM0;
+
+        /* Process Unlocked */
+        __HAL_UNLOCK(hdma);
+
+        if(hdma->XferCpltCallback != NULL)
+        {
+          /* Transfer complete callback */
+          hdma->XferCpltCallback(hdma);
+        }
+      }
+    }
+  }
+}
+
+/**
+  * @}
+  */
+
+/** @addtogroup DMA_Exported_Functions_Group3
+  *
+@verbatim
+ ===============================================================================
+                    ##### State and Errors functions #####
+ ===============================================================================
+    [..]
+    This subsection provides functions allowing to
+      (+) Check the DMA state
+      (+) Get error code
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Returns the DMA state.
+  * @param  hdma: pointer to a DMA_HandleTypeDef structure that contains
+  *               the configuration information for the specified DMA Stream.
+  * @retval HAL state
+  */
+HAL_DMA_StateTypeDef HAL_DMA_GetState(DMA_HandleTypeDef *hdma)
+{
+  return hdma->State;
+}
+
+/**
+  * @brief  Return the DMA error code
+  * @param  hdma : pointer to a DMA_HandleTypeDef structure that contains
+  *              the configuration information for the specified DMA Stream.
+  * @retval DMA Error Code
+  */
+uint32_t HAL_DMA_GetError(DMA_HandleTypeDef *hdma)
+{
+  return hdma->ErrorCode;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+  
+/** @addtogroup DMA_Private_Functions
+  * @{
+  */
+
+/**
+  * @brief  Sets 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_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
+{
+  /* Clear DBM bit */
+  hdma->Instance->CR &= (uint32_t)(~DMA_SxCR_DBM);
+
+  /* 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;
+  }
+}
+
+/**
+  * @brief  Returns the DMA Stream base address depending on stream number
+  * @param  hdma:       pointer to a DMA_HandleTypeDef structure that contains
+  *                     the configuration information for the specified DMA Stream. 
+  * @retval Stream base address
+  */
+static uint32_t DMA_CalcBaseAndBitshift(DMA_HandleTypeDef *hdma)
+{
+  uint32_t stream_number = (((uint32_t)hdma->Instance & 0xFF) - 16) / 24;
+  
+  /* lookup table for necessary bitshift of flags within status registers */
+  static const uint8_t flagBitshiftOffset[8] = {0, 6, 16, 22, 0, 6, 16, 22};
+  hdma->StreamIndex = flagBitshiftOffset[stream_number];
+  
+  if (stream_number > 3)
+  {
+    /* return pointer to HISR and HIFCR */
+    hdma->StreamBaseAddress = (((uint32_t)hdma->Instance & (uint32_t)(~0x3FF)) + 4);
+  }
+  else
+  {
+    /* return pointer to LISR and LIFCR */
+    hdma->StreamBaseAddress = ((uint32_t)hdma->Instance & (uint32_t)(~0x3FF));
+  }
+  
+  return hdma->StreamBaseAddress;
+}
+/**
+  * @}
+  */  
+  
+#endif /* HAL_DMA_MODULE_ENABLED */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/