Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_dma.c

Revision:

76:aeb1df146756

Child:

80:66393a7b209d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_dma.c	Mon Jan 27 14:30:07 2014 +0000
@@ -0,0 +1,866 @@
+/**
+  ******************************************************************************
+  * @file    stm32l1xx_dma.c
+  * @author  MCD Application Team
+  * @version V1.2.0
+  * @date    22-February-2013
+  * @brief   This file provides firmware functions to manage the following 
+  *          functionalities of the Direct Memory Access controller (DMA):           
+  *           + Initialization and Configuration
+  *           + Data Counter
+  *           + Interrupts and flags management
+  *           
+  *  @verbatim
+  ==============================================================================
+                      ##### How to use this driver #####
+  ==============================================================================
+    [..]
+    (#) Enable The DMA controller clock using 
+        RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE) function for DMA1 or 
+        using RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE) function for DMA2.
+    (#) Enable and configure the peripheral to be connected to the DMA channel
+               (except for internal SRAM / FLASH memories: no initialization is 
+               necessary).
+    (#) For a given Channel, program the Source and Destination addresses, 
+        the transfer Direction, the Buffer Size, the Peripheral and Memory 
+        Incrementation mode and Data Size, the Circular or Normal mode, 
+        the channel transfer Priority and the Memory-to-Memory transfer 
+        mode (if needed) using the DMA_Init() function.
+    (#) Enable the NVIC and the corresponding interrupt(s) using the function 
+        DMA_ITConfig() if you need to use DMA interrupts.
+    (#) Enable the DMA channel using the DMA_Cmd() function.
+    (#) Activate the needed channel Request using PPP_DMACmd() function for 
+        any PPP peripheral except internal SRAM and FLASH (ie. SPI, USART ...) 
+        The function allowing this operation is provided in each PPP peripheral 
+        driver (ie. SPI_DMACmd for SPI peripheral).
+    (#) Optionally, you can configure the number of data to be transferred
+        when the channel is disabled (ie. after each Transfer Complete event
+        or when a Transfer Error occurs) using the function DMA_SetCurrDataCounter().
+        And you can get the number of remaining data to be transferred using 
+        the function DMA_GetCurrDataCounter() at run time (when the DMA channel is
+        enabled and running).
+    (#) To control DMA events you can use one of the following two methods:
+        (##) Check on DMA channel flags using the function DMA_GetFlagStatus().
+        (##) Use DMA interrupts through the function DMA_ITConfig() at initialization
+             phase and DMA_GetITStatus() function into interrupt routines in
+             communication phase.
+             After checking on a flag you should clear it using DMA_ClearFlag()
+             function. And after checking on an interrupt event you should 
+             clear it using DMA_ClearITPendingBit() function.
+    @endverbatim
+    
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32l1xx_dma.h"
+#include "stm32l1xx_rcc.h"
+
+/** @addtogroup STM32L1xx_StdPeriph_Driver
+  * @{
+  */
+
+/** @defgroup DMA 
+  * @brief DMA driver modules
+  * @{
+  */ 
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+
+/* DMA1 Channelx interrupt pending bit masks */
+#define DMA1_CHANNEL1_IT_MASK    ((uint32_t)(DMA_ISR_GIF1 | DMA_ISR_TCIF1 | DMA_ISR_HTIF1 | DMA_ISR_TEIF1))
+#define DMA1_CHANNEL2_IT_MASK    ((uint32_t)(DMA_ISR_GIF2 | DMA_ISR_TCIF2 | DMA_ISR_HTIF2 | DMA_ISR_TEIF2))
+#define DMA1_CHANNEL3_IT_MASK    ((uint32_t)(DMA_ISR_GIF3 | DMA_ISR_TCIF3 | DMA_ISR_HTIF3 | DMA_ISR_TEIF3))
+#define DMA1_CHANNEL4_IT_MASK    ((uint32_t)(DMA_ISR_GIF4 | DMA_ISR_TCIF4 | DMA_ISR_HTIF4 | DMA_ISR_TEIF4))
+#define DMA1_CHANNEL5_IT_MASK    ((uint32_t)(DMA_ISR_GIF5 | DMA_ISR_TCIF5 | DMA_ISR_HTIF5 | DMA_ISR_TEIF5))
+#define DMA1_CHANNEL6_IT_MASK    ((uint32_t)(DMA_ISR_GIF6 | DMA_ISR_TCIF6 | DMA_ISR_HTIF6 | DMA_ISR_TEIF6))
+#define DMA1_CHANNEL7_IT_MASK    ((uint32_t)(DMA_ISR_GIF7 | DMA_ISR_TCIF7 | DMA_ISR_HTIF7 | DMA_ISR_TEIF7))
+
+/* DMA2 Channelx interrupt pending bit masks */
+#define DMA2_CHANNEL1_IT_MASK    ((uint32_t)(DMA_ISR_GIF1 | DMA_ISR_TCIF1 | DMA_ISR_HTIF1 | DMA_ISR_TEIF1))
+#define DMA2_CHANNEL2_IT_MASK    ((uint32_t)(DMA_ISR_GIF2 | DMA_ISR_TCIF2 | DMA_ISR_HTIF2 | DMA_ISR_TEIF2))
+#define DMA2_CHANNEL3_IT_MASK    ((uint32_t)(DMA_ISR_GIF3 | DMA_ISR_TCIF3 | DMA_ISR_HTIF3 | DMA_ISR_TEIF3))
+#define DMA2_CHANNEL4_IT_MASK    ((uint32_t)(DMA_ISR_GIF4 | DMA_ISR_TCIF4 | DMA_ISR_HTIF4 | DMA_ISR_TEIF4))
+#define DMA2_CHANNEL5_IT_MASK    ((uint32_t)(DMA_ISR_GIF5 | DMA_ISR_TCIF5 | DMA_ISR_HTIF5 | DMA_ISR_TEIF5))
+
+/* DMA FLAG mask */
+#define FLAG_MASK                ((uint32_t)0x10000000)
+
+/* DMA registers Masks */
+#define CCR_CLEAR_MASK           ((uint32_t)0xFFFF800F)
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+
+/** @defgroup DMA_Private_Functions
+  * @{
+  */
+
+/** @defgroup DMA_Group1 Initialization and Configuration functions
+ *  @brief   Initialization and Configuration functions
+ *
+@verbatim   
+ ===============================================================================
+            ##### Initialization and Configuration functions #####
+ ===============================================================================
+    [..] This subsection provides functions allowing to initialize the DMA channel 
+         source and destination addresses, incrementation and data sizes, transfer 
+         direction, buffer size, circular/normal mode selection, memory-to-memory 
+         mode selection and channel priority value.
+    [..] The DMA_Init() function follows the DMA configuration procedures as described 
+         in reference manual (RM0038).
+@endverbatim
+  * @{
+  */
+  
+/**
+  * @brief  Deinitializes the DMAy Channelx registers to their default reset
+  *         values.
+  * @param  DMAy_Channelx: where y can be 1 or 2 to select the DMA and x can be 
+  *         1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel.
+  * @retval None
+  */
+void DMA_DeInit(DMA_Channel_TypeDef* DMAy_Channelx)
+{
+  /* Check the parameters */
+  assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx));
+
+  /* Disable the selected DMAy Channelx */
+  DMAy_Channelx->CCR &= (uint16_t)(~DMA_CCR1_EN);
+
+  /* Reset DMAy Channelx control register */
+  DMAy_Channelx->CCR  = 0;
+  
+  /* Reset DMAy Channelx remaining bytes register */
+  DMAy_Channelx->CNDTR = 0;
+  
+  /* Reset DMAy Channelx peripheral address register */
+  DMAy_Channelx->CPAR  = 0;
+  
+  /* Reset DMAy Channelx memory address register */
+  DMAy_Channelx->CMAR = 0;
+  
+  if (DMAy_Channelx == DMA1_Channel1)
+  {
+    /* Reset interrupt pending bits for DMA1 Channel1 */
+    DMA1->IFCR |= DMA1_CHANNEL1_IT_MASK;
+  }
+  else if (DMAy_Channelx == DMA1_Channel2)
+  {
+    /* Reset interrupt pending bits for DMA1 Channel2 */
+    DMA1->IFCR |= DMA1_CHANNEL2_IT_MASK;
+  }
+  else if (DMAy_Channelx == DMA1_Channel3)
+  {
+    /* Reset interrupt pending bits for DMA1 Channel3 */
+    DMA1->IFCR |= DMA1_CHANNEL3_IT_MASK;
+  }
+  else if (DMAy_Channelx == DMA1_Channel4)
+  {
+    /* Reset interrupt pending bits for DMA1 Channel4 */
+    DMA1->IFCR |= DMA1_CHANNEL4_IT_MASK;
+  }
+  else if (DMAy_Channelx == DMA1_Channel5)
+  {
+    /* Reset interrupt pending bits for DMA1 Channel5 */
+    DMA1->IFCR |= DMA1_CHANNEL5_IT_MASK;
+  }
+  else if (DMAy_Channelx == DMA1_Channel6)
+  {
+    /* Reset interrupt pending bits for DMA1 Channel6 */
+    DMA1->IFCR |= DMA1_CHANNEL6_IT_MASK;
+  }
+  else if (DMAy_Channelx == DMA1_Channel7)
+  {
+    /* Reset interrupt pending bits for DMA1 Channel7 */
+    DMA1->IFCR |= DMA1_CHANNEL7_IT_MASK;
+  }
+  else if (DMAy_Channelx == DMA2_Channel1)
+  {
+    /* Reset interrupt pending bits for DMA2 Channel1 */
+    DMA2->IFCR |= DMA2_CHANNEL1_IT_MASK;
+  }
+  else if (DMAy_Channelx == DMA2_Channel2)
+  {
+    /* Reset interrupt pending bits for DMA2 Channel2 */
+    DMA2->IFCR |= DMA2_CHANNEL2_IT_MASK;
+  }
+  else if (DMAy_Channelx == DMA2_Channel3)
+  {
+    /* Reset interrupt pending bits for DMA2 Channel3 */
+    DMA2->IFCR |= DMA2_CHANNEL3_IT_MASK;
+  }
+  else if (DMAy_Channelx == DMA2_Channel4)
+  {
+    /* Reset interrupt pending bits for DMA2 Channel4 */
+    DMA2->IFCR |= DMA2_CHANNEL4_IT_MASK;
+  }
+  else
+  { 
+    if (DMAy_Channelx == DMA2_Channel5)
+    {
+      /* Reset interrupt pending bits for DMA2 Channel5 */
+      DMA2->IFCR |= DMA2_CHANNEL5_IT_MASK;
+    }
+  }
+}
+
+/**
+  * @brief  Initializes the DMAy Channelx according to the specified
+  *         parameters in the DMA_InitStruct.
+  * @param  DMAy_Channelx: where y can be 1 or 2 to select the DMA and x can be 
+  *         1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel.
+  * @param  DMA_InitStruct: pointer to a DMA_InitTypeDef structure that
+  *         contains the configuration information for the specified DMA Channel.
+  * @retval None
+  */
+void DMA_Init(DMA_Channel_TypeDef* DMAy_Channelx, DMA_InitTypeDef* DMA_InitStruct)
+{
+  uint32_t tmpreg = 0;
+
+  /* Check the parameters */
+  assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx));
+  assert_param(IS_DMA_DIR(DMA_InitStruct->DMA_DIR));
+  assert_param(IS_DMA_BUFFER_SIZE(DMA_InitStruct->DMA_BufferSize));
+  assert_param(IS_DMA_PERIPHERAL_INC_STATE(DMA_InitStruct->DMA_PeripheralInc));
+  assert_param(IS_DMA_MEMORY_INC_STATE(DMA_InitStruct->DMA_MemoryInc));   
+  assert_param(IS_DMA_PERIPHERAL_DATA_SIZE(DMA_InitStruct->DMA_PeripheralDataSize));
+  assert_param(IS_DMA_MEMORY_DATA_SIZE(DMA_InitStruct->DMA_MemoryDataSize));
+  assert_param(IS_DMA_MODE(DMA_InitStruct->DMA_Mode));
+  assert_param(IS_DMA_PRIORITY(DMA_InitStruct->DMA_Priority));
+  assert_param(IS_DMA_M2M_STATE(DMA_InitStruct->DMA_M2M));
+
+/*--------------------------- DMAy Channelx CCR Configuration -----------------*/
+  /* Get the DMAy_Channelx CCR value */
+  tmpreg = DMAy_Channelx->CCR;
+  /* Clear MEM2MEM, PL, MSIZE, PSIZE, MINC, PINC, CIRC and DIR bits */
+  tmpreg &= CCR_CLEAR_MASK;
+  /* Configure DMAy Channelx: data transfer, data size, priority level and mode */
+  /* Set DIR bit according to DMA_DIR value */
+  /* Set CIRC bit according to DMA_Mode value */
+  /* Set PINC bit according to DMA_PeripheralInc value */
+  /* Set MINC bit according to DMA_MemoryInc value */
+  /* Set PSIZE bits according to DMA_PeripheralDataSize value */
+  /* Set MSIZE bits according to DMA_MemoryDataSize value */
+  /* Set PL bits according to DMA_Priority value */
+  /* Set the MEM2MEM bit according to DMA_M2M value */
+  tmpreg |= DMA_InitStruct->DMA_DIR | DMA_InitStruct->DMA_Mode |
+            DMA_InitStruct->DMA_PeripheralInc | DMA_InitStruct->DMA_MemoryInc |
+            DMA_InitStruct->DMA_PeripheralDataSize | DMA_InitStruct->DMA_MemoryDataSize |
+            DMA_InitStruct->DMA_Priority | DMA_InitStruct->DMA_M2M;
+
+  /* Write to DMAy Channelx CCR */
+  DMAy_Channelx->CCR = tmpreg;
+
+/*--------------------------- DMAy Channelx CNDTR Configuration ---------------*/
+  /* Write to DMAy Channelx CNDTR */
+  DMAy_Channelx->CNDTR = DMA_InitStruct->DMA_BufferSize;
+
+/*--------------------------- DMAy Channelx CPAR Configuration ----------------*/
+  /* Write to DMAy Channelx CPAR */
+  DMAy_Channelx->CPAR = DMA_InitStruct->DMA_PeripheralBaseAddr;
+
+/*--------------------------- DMAy Channelx CMAR Configuration ----------------*/
+  /* Write to DMAy Channelx CMAR */
+  DMAy_Channelx->CMAR = DMA_InitStruct->DMA_MemoryBaseAddr;
+}
+
+/**
+  * @brief  Fills each DMA_InitStruct member with its default value.
+  * @param  DMA_InitStruct: pointer to a DMA_InitTypeDef structure which will
+  *         be initialized.
+  * @retval None
+  */
+void DMA_StructInit(DMA_InitTypeDef* DMA_InitStruct)
+{
+/*-------------- Reset DMA init structure parameters values ------------------*/
+  /* Initialize the DMA_PeripheralBaseAddr member */
+  DMA_InitStruct->DMA_PeripheralBaseAddr = 0;
+  /* Initialize the DMA_MemoryBaseAddr member */
+  DMA_InitStruct->DMA_MemoryBaseAddr = 0;
+  /* Initialize the DMA_DIR member */
+  DMA_InitStruct->DMA_DIR = DMA_DIR_PeripheralSRC;
+  /* Initialize the DMA_BufferSize member */
+  DMA_InitStruct->DMA_BufferSize = 0;
+  /* Initialize the DMA_PeripheralInc member */
+  DMA_InitStruct->DMA_PeripheralInc = DMA_PeripheralInc_Disable;
+  /* Initialize the DMA_MemoryInc member */
+  DMA_InitStruct->DMA_MemoryInc = DMA_MemoryInc_Disable;
+  /* Initialize the DMA_PeripheralDataSize member */
+  DMA_InitStruct->DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
+  /* Initialize the DMA_MemoryDataSize member */
+  DMA_InitStruct->DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
+  /* Initialize the DMA_Mode member */
+  DMA_InitStruct->DMA_Mode = DMA_Mode_Normal;
+  /* Initialize the DMA_Priority member */
+  DMA_InitStruct->DMA_Priority = DMA_Priority_Low;
+  /* Initialize the DMA_M2M member */
+  DMA_InitStruct->DMA_M2M = DMA_M2M_Disable;
+}
+
+/**
+  * @brief  Enables or disables the specified DMAy Channelx.
+  * @param  DMAy_Channelx: where y can be 1 or 2 to select the DMA and x can be 
+  *         1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel.
+  * @param  NewState: new state of the DMAy Channelx. 
+  *         This parameter can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void DMA_Cmd(DMA_Channel_TypeDef* DMAy_Channelx, FunctionalState NewState)
+{
+  /* Check the parameters */
+  assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx));
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+
+  if (NewState != DISABLE)
+  {
+    /* Enable the selected DMAy Channelx */
+    DMAy_Channelx->CCR |= DMA_CCR1_EN;
+  }
+  else
+  {
+    /* Disable the selected DMAy Channelx */
+    DMAy_Channelx->CCR &= (uint16_t)(~DMA_CCR1_EN);
+  }
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup DMA_Group2 Data Counter functions
+ *  @brief   Data Counter functions 
+ *
+@verbatim   
+ ===============================================================================
+                      ##### Data Counter functions #####
+ ===============================================================================
+    [..] This subsection provides function allowing to configure and read the buffer 
+         size (number of data to be transferred).The DMA data counter can be written 
+         only when the DMA channel is disabled (ie. after transfer complete event).
+    [..] The following function can be used to write the Channel data counter value:
+         (+) void DMA_SetCurrDataCounter(DMA_Channel_TypeDef* DMAy_Channelx, uint16_t 
+             DataNumber).
+    -@- It is advised to use this function rather than DMA_Init() in situations 
+        where only the Data buffer needs to be reloaded.
+    [..] The DMA data counter can be read to indicate the number of remaining transfers 
+         for the relative DMA channel. This counter is decremented at the end of each 
+         data transfer and when the transfer is complete: 
+         (+) If Normal mode is selected: the counter is set to 0.
+         (+) If Circular mode is selected: the counter is reloaded with the initial 
+         value(configured before enabling the DMA channel).
+    [..] The following function can be used to read the Channel data counter value:
+         (+) uint16_t DMA_GetCurrDataCounter(DMA_Channel_TypeDef* DMAy_Channelx).
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Sets the number of data units in the current DMAy Channelx transfer.
+  * @param  DMAy_Channelx: where y can be 1 or 2 to select the DMA and x can be 
+  *         1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel.
+  * @param  DataNumber: The number of data units in the current DMAy Channelx
+  *         transfer.
+  * @note   This function can only be used when the DMAy_Channelx is disabled.
+  * @retval None.
+  */
+void DMA_SetCurrDataCounter(DMA_Channel_TypeDef* DMAy_Channelx, uint16_t DataNumber)
+{
+  /* Check the parameters */
+  assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx));
+  
+/*--------------------------- DMAy Channelx CNDTR Configuration ---------------*/
+  /* Write to DMAy Channelx CNDTR */
+  DMAy_Channelx->CNDTR = DataNumber;  
+}
+
+/**
+  * @brief  Returns the number of remaining data units in the current
+  *         DMAy Channelx transfer.
+  * @param  DMAy_Channelx: where y can be 1 or 2 to select the DMA and x can be 
+  *         1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel.
+  * @retval The number of remaining data units in the current DMAy Channelx
+  *         transfer.
+  */
+uint16_t DMA_GetCurrDataCounter(DMA_Channel_TypeDef* DMAy_Channelx)
+{
+  /* Check the parameters */
+  assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx));
+  /* Return the number of remaining data units for DMAy Channelx */
+  return ((uint16_t)(DMAy_Channelx->CNDTR));
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup DMA_Group3 Interrupts and flags management functions
+ *  @brief   Interrupts and flags management functions 
+ *
+@verbatim   
+ ===============================================================================
+          ##### Interrupts and flags management functions #####
+ ===============================================================================
+    [..] This subsection provides functions allowing to configure the DMA Interrupts 
+         sources and check or clear the flags or pending bits status.
+         The user should identify which mode will be used in his application to manage 
+         the DMA controller events: Polling mode or Interrupt mode. 
+  *** Polling Mode ***
+  ====================
+    [..] Each DMA channel can be managed through 4 event Flags:(y : DMA Controller 
+         number  x : DMA channel number ).
+         (#) DMAy_FLAG_TCx : to indicate that a Transfer Complete event occurred.
+         (#) DMAy_FLAG_HTx : to indicate that a Half-Transfer Complete event occurred.
+         (#) DMAy_FLAG_TEx : to indicate that a Transfer Error occurred.
+         (#) DMAy_FLAG_GLx : to indicate that at least one of the events described 
+             above occurred.
+    -@- Clearing DMAy_FLAG_GLx results in clearing all other pending flags of the 
+        same channel (DMAy_FLAG_TCx, DMAy_FLAG_HTx and DMAy_FLAG_TEx).
+    [..]In this Mode it is advised to use the following functions:
+        (+) FlagStatus DMA_GetFlagStatus(uint32_t DMA_FLAG);
+        (+) void DMA_ClearFlag(uint32_t DMA_FLAG);
+
+  *** Interrupt Mode ***
+  ======================
+    [..] Each DMA channel can be managed through 4 Interrupts:
+    (+) Interrupt Source
+       (##) DMA_IT_TC: specifies the interrupt source for the Transfer Complete 
+            event.
+       (##) DMA_IT_HT : specifies the interrupt source for the Half-transfer Complete 
+            event.
+       (##) DMA_IT_TE : specifies the interrupt source for the transfer errors event.
+       (##) DMA_IT_GL : to indicate that at least one of the interrupts described 
+            above occurred.
+    -@@- Clearing DMA_IT_GL interrupt results in clearing all other interrupts of 
+        the same channel (DMA_IT_TCx, DMA_IT_HT and DMA_IT_TE).
+    [..]In this Mode it is advised to use the following functions:
+        (+) void DMA_ITConfig(DMA_Channel_TypeDef* DMAy_Channelx, uint32_t DMA_IT, 
+            FunctionalState NewState);
+        (+) ITStatus DMA_GetITStatus(uint32_t DMA_IT);
+        (+) void DMA_ClearITPendingBit(uint32_t DMA_IT);
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Enables or disables the specified DMAy Channelx interrupts.
+  * @param  DMAy_Channelx: where y can be 1 or 2 to select the DMA and x can be 
+  *         1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel.
+  * @param  DMA_IT: specifies the DMA interrupts sources to be enabled
+  *         or disabled. 
+  *   This parameter can be any combination of the following values:
+  *     @arg DMA_IT_TC: Transfer complete interrupt mask
+  *     @arg DMA_IT_HT: Half transfer interrupt mask
+  *     @arg DMA_IT_TE: Transfer error interrupt mask
+  * @param  NewState: new state of the specified DMA interrupts.
+  *         This parameter can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void DMA_ITConfig(DMA_Channel_TypeDef* DMAy_Channelx, uint32_t DMA_IT, FunctionalState NewState)
+{
+  /* Check the parameters */
+  assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx));
+  assert_param(IS_DMA_CONFIG_IT(DMA_IT));
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+
+  if (NewState != DISABLE)
+  {
+    /* Enable the selected DMA interrupts */
+    DMAy_Channelx->CCR |= DMA_IT;
+  }
+  else
+  {
+    /* Disable the selected DMA interrupts */
+    DMAy_Channelx->CCR &= ~DMA_IT;
+  }
+}
+
+/**
+  * @brief  Checks whether the specified DMAy Channelx flag is set or not.
+  * @param  DMAy_FLAG: specifies the flag to check.
+  *   This parameter can be one of the following values:
+  *     @arg DMA1_FLAG_GL1: DMA1 Channel1 global flag.
+  *     @arg DMA1_FLAG_TC1: DMA1 Channel1 transfer complete flag.
+  *     @arg DMA1_FLAG_HT1: DMA1 Channel1 half transfer flag.
+  *     @arg DMA1_FLAG_TE1: DMA1 Channel1 transfer error flag.
+  *     @arg DMA1_FLAG_GL2: DMA1 Channel2 global flag.
+  *     @arg DMA1_FLAG_TC2: DMA1 Channel2 transfer complete flag.
+  *     @arg DMA1_FLAG_HT2: DMA1 Channel2 half transfer flag.
+  *     @arg DMA1_FLAG_TE2: DMA1 Channel2 transfer error flag.
+  *     @arg DMA1_FLAG_GL3: DMA1 Channel3 global flag.
+  *     @arg DMA1_FLAG_TC3: DMA1 Channel3 transfer complete flag.
+  *     @arg DMA1_FLAG_HT3: DMA1 Channel3 half transfer flag.
+  *     @arg DMA1_FLAG_TE3: DMA1 Channel3 transfer error flag.
+  *     @arg DMA1_FLAG_GL4: DMA1 Channel4 global flag.
+  *     @arg DMA1_FLAG_TC4: DMA1 Channel4 transfer complete flag.
+  *     @arg DMA1_FLAG_HT4: DMA1 Channel4 half transfer flag.
+  *     @arg DMA1_FLAG_TE4: DMA1 Channel4 transfer error flag.
+  *     @arg DMA1_FLAG_GL5: DMA1 Channel5 global flag.
+  *     @arg DMA1_FLAG_TC5: DMA1 Channel5 transfer complete flag.
+  *     @arg DMA1_FLAG_HT5: DMA1 Channel5 half transfer flag.
+  *     @arg DMA1_FLAG_TE5: DMA1 Channel5 transfer error flag.
+  *     @arg DMA1_FLAG_GL6: DMA1 Channel6 global flag.
+  *     @arg DMA1_FLAG_TC6: DMA1 Channel6 transfer complete flag.
+  *     @arg DMA1_FLAG_HT6: DMA1 Channel6 half transfer flag.
+  *     @arg DMA1_FLAG_TE6: DMA1 Channel6 transfer error flag.
+  *     @arg DMA1_FLAG_GL7: DMA1 Channel7 global flag.
+  *     @arg DMA1_FLAG_TC7: DMA1 Channel7 transfer complete flag.
+  *     @arg DMA1_FLAG_HT7: DMA1 Channel7 half transfer flag.
+  *     @arg DMA1_FLAG_TE7: DMA1 Channel7 transfer error flag.
+  *     @arg DMA2_FLAG_GL1: DMA2 Channel1 global flag.
+  *     @arg DMA2_FLAG_TC1: DMA2 Channel1 transfer complete flag.
+  *     @arg DMA2_FLAG_HT1: DMA2 Channel1 half transfer flag.
+  *     @arg DMA2_FLAG_TE1: DMA2 Channel1 transfer error flag.
+  *     @arg DMA2_FLAG_GL2: DMA2 Channel2 global flag.
+  *     @arg DMA2_FLAG_TC2: DMA2 Channel2 transfer complete flag.
+  *     @arg DMA2_FLAG_HT2: DMA2 Channel2 half transfer flag.
+  *     @arg DMA2_FLAG_TE2: DMA2 Channel2 transfer error flag.
+  *     @arg DMA2_FLAG_GL3: DMA2 Channel3 global flag.
+  *     @arg DMA2_FLAG_TC3: DMA2 Channel3 transfer complete flag.
+  *     @arg DMA2_FLAG_HT3: DMA2 Channel3 half transfer flag.
+  *     @arg DMA2_FLAG_TE3: DMA2 Channel3 transfer error flag.
+  *     @arg DMA2_FLAG_GL4: DMA2 Channel4 global flag.
+  *     @arg DMA2_FLAG_TC4: DMA2 Channel4 transfer complete flag.
+  *     @arg DMA2_FLAG_HT4: DMA2 Channel4 half transfer flag.
+  *     @arg DMA2_FLAG_TE4: DMA2 Channel4 transfer error flag.
+  *     @arg DMA2_FLAG_GL5: DMA2 Channel5 global flag.
+  *     @arg DMA2_FLAG_TC5: DMA2 Channel5 transfer complete flag.
+  *     @arg DMA2_FLAG_HT5: DMA2 Channel5 half transfer flag.
+  *     @arg DMA2_FLAG_TE5: DMA2 Channel5 transfer error flag.
+  *     
+  * @note
+  *    The Global flag (DMAy_FLAG_GLx) is set whenever any of the other flags 
+  *    relative to the same channel is set (Transfer Complete, Half-transfer 
+  *    Complete or Transfer Error flags: DMAy_FLAG_TCx, DMAy_FLAG_HTx or 
+  *    DMAy_FLAG_TEx). 
+  *      
+  * @retval The new state of DMAy_FLAG (SET or RESET).
+  */
+FlagStatus DMA_GetFlagStatus(uint32_t DMAy_FLAG)
+{
+  FlagStatus bitstatus = RESET;
+  uint32_t tmpreg = 0;
+
+  /* Check the parameters */
+  assert_param(IS_DMA_GET_FLAG(DMAy_FLAG));
+
+  /* Calculate the used DMAy */
+  if ((DMAy_FLAG & FLAG_MASK) == (uint32_t)RESET)
+  {
+    /* Get DMA1 ISR register value */
+    tmpreg = DMA1->ISR;
+  }
+  else
+  {
+    /* Get DMA2 ISR register value */
+    tmpreg = DMA2->ISR;
+  }
+
+  /* Check the status of the specified DMAy flag */
+  if ((tmpreg & DMAy_FLAG) != (uint32_t)RESET)
+  {
+    /* DMAy_FLAG is set */
+    bitstatus = SET;
+  }
+  else
+  {
+    /* DMAy_FLAG is reset */
+    bitstatus = RESET;
+  }
+  
+  /* Return the DMAy_FLAG status */
+  return  bitstatus;
+}
+
+/**
+  * @brief  Clears the DMAy Channelx's pending flags.
+  * @param  DMAy_FLAG: specifies the flag to clear.
+  *   This parameter can be any combination (for the same DMA) of the following values:
+  *     @arg DMA1_FLAG_GL1: DMA1 Channel1 global flag.
+  *     @arg DMA1_FLAG_TC1: DMA1 Channel1 transfer complete flag.
+  *     @arg DMA1_FLAG_HT1: DMA1 Channel1 half transfer flag.
+  *     @arg DMA1_FLAG_TE1: DMA1 Channel1 transfer error flag.
+  *     @arg DMA1_FLAG_GL2: DMA1 Channel2 global flag.
+  *     @arg DMA1_FLAG_TC2: DMA1 Channel2 transfer complete flag.
+  *     @arg DMA1_FLAG_HT2: DMA1 Channel2 half transfer flag.
+  *     @arg DMA1_FLAG_TE2: DMA1 Channel2 transfer error flag.
+  *     @arg DMA1_FLAG_GL3: DMA1 Channel3 global flag.
+  *     @arg DMA1_FLAG_TC3: DMA1 Channel3 transfer complete flag.
+  *     @arg DMA1_FLAG_HT3: DMA1 Channel3 half transfer flag.
+  *     @arg DMA1_FLAG_TE3: DMA1 Channel3 transfer error flag.
+  *     @arg DMA1_FLAG_GL4: DMA1 Channel4 global flag.
+  *     @arg DMA1_FLAG_TC4: DMA1 Channel4 transfer complete flag.
+  *     @arg DMA1_FLAG_HT4: DMA1 Channel4 half transfer flag.
+  *     @arg DMA1_FLAG_TE4: DMA1 Channel4 transfer error flag.
+  *     @arg DMA1_FLAG_GL5: DMA1 Channel5 global flag.
+  *     @arg DMA1_FLAG_TC5: DMA1 Channel5 transfer complete flag.
+  *     @arg DMA1_FLAG_HT5: DMA1 Channel5 half transfer flag.
+  *     @arg DMA1_FLAG_TE5: DMA1 Channel5 transfer error flag.
+  *     @arg DMA1_FLAG_GL6: DMA1 Channel6 global flag.
+  *     @arg DMA1_FLAG_TC6: DMA1 Channel6 transfer complete flag.
+  *     @arg DMA1_FLAG_HT6: DMA1 Channel6 half transfer flag.
+  *     @arg DMA1_FLAG_TE6: DMA1 Channel6 transfer error flag.
+  *     @arg DMA1_FLAG_GL7: DMA1 Channel7 global flag.
+  *     @arg DMA1_FLAG_TC7: DMA1 Channel7 transfer complete flag.
+  *     @arg DMA1_FLAG_HT7: DMA1 Channel7 half transfer flag.
+  *     @arg DMA1_FLAG_TE7: DMA1 Channel7 transfer error flag.
+  *     @arg DMA2_FLAG_GL1: DMA2 Channel1 global flag.
+  *     @arg DMA2_FLAG_TC1: DMA2 Channel1 transfer complete flag.
+  *     @arg DMA2_FLAG_HT1: DMA2 Channel1 half transfer flag.
+  *     @arg DMA2_FLAG_TE1: DMA2 Channel1 transfer error flag.
+  *     @arg DMA2_FLAG_GL2: DMA2 Channel2 global flag.
+  *     @arg DMA2_FLAG_TC2: DMA2 Channel2 transfer complete flag.
+  *     @arg DMA2_FLAG_HT2: DMA2 Channel2 half transfer flag.
+  *     @arg DMA2_FLAG_TE2: DMA2 Channel2 transfer error flag.
+  *     @arg DMA2_FLAG_GL3: DMA2 Channel3 global flag.
+  *     @arg DMA2_FLAG_TC3: DMA2 Channel3 transfer complete flag.
+  *     @arg DMA2_FLAG_HT3: DMA2 Channel3 half transfer flag.
+  *     @arg DMA2_FLAG_TE3: DMA2 Channel3 transfer error flag.
+  *     @arg DMA2_FLAG_GL4: DMA2 Channel4 global flag.
+  *     @arg DMA2_FLAG_TC4: DMA2 Channel4 transfer complete flag.
+  *     @arg DMA2_FLAG_HT4: DMA2 Channel4 half transfer flag.
+  *     @arg DMA2_FLAG_TE4: DMA2 Channel4 transfer error flag.
+  *     @arg DMA2_FLAG_GL5: DMA2 Channel5 global flag.
+  *     @arg DMA2_FLAG_TC5: DMA2 Channel5 transfer complete flag.
+  *     @arg DMA2_FLAG_HT5: DMA2 Channel5 half transfer flag.
+  *     @arg DMA2_FLAG_TE5: DMA2 Channel5 transfer error flag.       
+  *     
+  * @note
+  *    Clearing the Global flag (DMAy_FLAG_GLx) results in clearing all other flags
+  *    relative to the same channel (Transfer Complete, Half-transfer Complete and 
+  *    Transfer Error flags: DMAy_FLAG_TCx, DMAy_FLAG_HTx and DMAy_FLAG_TEx).  
+  *      
+  * @retval None
+  */
+void DMA_ClearFlag(uint32_t DMAy_FLAG)
+{
+  /* Check the parameters */
+  assert_param(IS_DMA_CLEAR_FLAG(DMAy_FLAG));
+
+  if ((DMAy_FLAG & FLAG_MASK) == (uint32_t)RESET)
+  {
+    /* Clear the selected DMAy flags */
+    DMA1->IFCR = DMAy_FLAG;
+  }
+  else
+  {
+    /* Clear the selected DMAy flags */
+    DMA2->IFCR = DMAy_FLAG;
+  }  
+}
+
+/**
+  * @brief  Checks whether the specified DMAy Channelx interrupt has occurred or not.
+  * @param  DMAy_IT: specifies the DMAy interrupt source to check. 
+  *   This parameter can be one of the following values:
+  *     @arg DMA1_IT_GL1: DMA1 Channel1 global interrupt.
+  *     @arg DMA1_IT_TC1: DMA1 Channel1 transfer complete interrupt.
+  *     @arg DMA1_IT_HT1: DMA1 Channel1 half transfer interrupt.
+  *     @arg DMA1_IT_TE1: DMA1 Channel1 transfer error interrupt.
+  *     @arg DMA1_IT_GL2: DMA1 Channel2 global interrupt.
+  *     @arg DMA1_IT_TC2: DMA1 Channel2 transfer complete interrupt.
+  *     @arg DMA1_IT_HT2: DMA1 Channel2 half transfer interrupt.
+  *     @arg DMA1_IT_TE2: DMA1 Channel2 transfer error interrupt.
+  *     @arg DMA1_IT_GL3: DMA1 Channel3 global interrupt.
+  *     @arg DMA1_IT_TC3: DMA1 Channel3 transfer complete interrupt.
+  *     @arg DMA1_IT_HT3: DMA1 Channel3 half transfer interrupt.
+  *     @arg DMA1_IT_TE3: DMA1 Channel3 transfer error interrupt.
+  *     @arg DMA1_IT_GL4: DMA1 Channel4 global interrupt.
+  *     @arg DMA1_IT_TC4: DMA1 Channel4 transfer complete interrupt.
+  *     @arg DMA1_IT_HT4: DMA1 Channel4 half transfer interrupt.
+  *     @arg DMA1_IT_TE4: DMA1 Channel4 transfer error interrupt.
+  *     @arg DMA1_IT_GL5: DMA1 Channel5 global interrupt.
+  *     @arg DMA1_IT_TC5: DMA1 Channel5 transfer complete interrupt.
+  *     @arg DMA1_IT_HT5: DMA1 Channel5 half transfer interrupt.
+  *     @arg DMA1_IT_TE5: DMA1 Channel5 transfer error interrupt.
+  *     @arg DMA1_IT_GL6: DMA1 Channel6 global interrupt.
+  *     @arg DMA1_IT_TC6: DMA1 Channel6 transfer complete interrupt.
+  *     @arg DMA1_IT_HT6: DMA1 Channel6 half transfer interrupt.
+  *     @arg DMA1_IT_TE6: DMA1 Channel6 transfer error interrupt.
+  *     @arg DMA1_IT_GL7: DMA1 Channel7 global interrupt.
+  *     @arg DMA1_IT_TC7: DMA1 Channel7 transfer complete interrupt.
+  *     @arg DMA1_IT_HT7: DMA1 Channel7 half transfer interrupt.
+  *     @arg DMA1_IT_TE7: DMA1 Channel7 transfer error interrupt.
+  *     @arg DMA2_IT_GL1: DMA2 Channel1 global interrupt.
+  *     @arg DMA2_IT_TC1: DMA2 Channel1 transfer complete interrupt.
+  *     @arg DMA2_IT_HT1: DMA2 Channel1 half transfer interrupt.
+  *     @arg DMA2_IT_TE1: DMA2 Channel1 transfer error interrupt.
+  *     @arg DMA2_IT_GL2: DMA2 Channel2 global interrupt.
+  *     @arg DMA2_IT_TC2: DMA2 Channel2 transfer complete interrupt.
+  *     @arg DMA2_IT_HT2: DMA2 Channel2 half transfer interrupt.
+  *     @arg DMA2_IT_TE2: DMA2 Channel2 transfer error interrupt.
+  *     @arg DMA2_IT_GL3: DMA2 Channel3 global interrupt.
+  *     @arg DMA2_IT_TC3: DMA2 Channel3 transfer complete interrupt.
+  *     @arg DMA2_IT_HT3: DMA2 Channel3 half transfer interrupt.
+  *     @arg DMA2_IT_TE3: DMA2 Channel3 transfer error interrupt.
+  *     @arg DMA2_IT_GL4: DMA2 Channel4 global interrupt.
+  *     @arg DMA2_IT_TC4: DMA2 Channel4 transfer complete interrupt.
+  *     @arg DMA2_IT_HT4: DMA2 Channel4 half transfer interrupt.
+  *     @arg DMA2_IT_TE4: DMA2 Channel4 transfer error interrupt.
+  *     @arg DMA2_IT_GL5: DMA2 Channel5 global interrupt.
+  *     @arg DMA2_IT_TC5: DMA2 Channel5 transfer complete interrupt.
+  *     @arg DMA2_IT_HT5: DMA2 Channel5 half transfer interrupt.
+  *     @arg DMA2_IT_TE5: DMA2 Channel5 transfer error interrupt.   
+  *     
+  * @note
+  *    The Global interrupt (DMAy_FLAG_GLx) is set whenever any of the other 
+  *    interrupts relative to the same channel is set (Transfer Complete, 
+  *    Half-transfer Complete or Transfer Error interrupts: DMAy_IT_TCx, 
+  *    DMAy_IT_HTx or DMAy_IT_TEx). 
+  *      
+  * @retval The new state of DMAy_IT (SET or RESET).
+  */
+ITStatus DMA_GetITStatus(uint32_t DMAy_IT)
+{
+  ITStatus bitstatus = RESET;
+  uint32_t tmpreg = 0;
+ 
+  /* Check the parameters */
+  assert_param(IS_DMA_GET_IT(DMAy_IT));
+
+  /* Calculate the used DMAy */
+  if ((DMAy_IT & FLAG_MASK) == (uint32_t)RESET)
+  {
+    /* Get DMA1 ISR register value */
+    tmpreg = DMA1->ISR;
+  }
+  else
+  {
+    /* Get DMA2 ISR register value */
+    tmpreg = DMA2->ISR;
+  }
+  
+  /* Check the status of the specified DMAy interrupt */
+  if ((tmpreg & DMAy_IT) != (uint32_t)RESET)
+  {
+    /* DMAy_IT is set */
+    bitstatus = SET;
+  }
+  else
+  {
+    /* DMAy_IT is reset */
+    bitstatus = RESET;
+  }
+  /* Return the DMAy_IT status */
+  return  bitstatus;
+}
+
+/**
+  * @brief  Clears the DMAy Channelx's interrupt pending bits.
+  * @param  DMAy_IT: specifies the DMAy interrupt pending bit to clear.
+  *   This parameter can be any combination (for the same DMA) of the following values:
+  *     @arg DMA1_IT_GL1: DMA1 Channel1 global interrupt.
+  *     @arg DMA1_IT_TC1: DMA1 Channel1 transfer complete interrupt.
+  *     @arg DMA1_IT_HT1: DMA1 Channel1 half transfer interrupt.
+  *     @arg DMA1_IT_TE1: DMA1 Channel1 transfer error interrupt.
+  *     @arg DMA1_IT_GL2: DMA1 Channel2 global interrupt.
+  *     @arg DMA1_IT_TC2: DMA1 Channel2 transfer complete interrupt.
+  *     @arg DMA1_IT_HT2: DMA1 Channel2 half transfer interrupt.
+  *     @arg DMA1_IT_TE2: DMA1 Channel2 transfer error interrupt.
+  *     @arg DMA1_IT_GL3: DMA1 Channel3 global interrupt.
+  *     @arg DMA1_IT_TC3: DMA1 Channel3 transfer complete interrupt.
+  *     @arg DMA1_IT_HT3: DMA1 Channel3 half transfer interrupt.
+  *     @arg DMA1_IT_TE3: DMA1 Channel3 transfer error interrupt.
+  *     @arg DMA1_IT_GL4: DMA1 Channel4 global interrupt.
+  *     @arg DMA1_IT_TC4: DMA1 Channel4 transfer complete interrupt.
+  *     @arg DMA1_IT_HT4: DMA1 Channel4 half transfer interrupt.
+  *     @arg DMA1_IT_TE4: DMA1 Channel4 transfer error interrupt.
+  *     @arg DMA1_IT_GL5: DMA1 Channel5 global interrupt.
+  *     @arg DMA1_IT_TC5: DMA1 Channel5 transfer complete interrupt.
+  *     @arg DMA1_IT_HT5: DMA1 Channel5 half transfer interrupt.
+  *     @arg DMA1_IT_TE5: DMA1 Channel5 transfer error interrupt.
+  *     @arg DMA1_IT_GL6: DMA1 Channel6 global interrupt.
+  *     @arg DMA1_IT_TC6: DMA1 Channel6 transfer complete interrupt.
+  *     @arg DMA1_IT_HT6: DMA1 Channel6 half transfer interrupt.
+  *     @arg DMA1_IT_TE6: DMA1 Channel6 transfer error interrupt.
+  *     @arg DMA1_IT_GL7: DMA1 Channel7 global interrupt.
+  *     @arg DMA1_IT_TC7: DMA1 Channel7 transfer complete interrupt.
+  *     @arg DMA1_IT_HT7: DMA1 Channel7 half transfer interrupt.
+  *     @arg DMA1_IT_TE7: DMA1 Channel7 transfer error interrupt.
+  *     @arg DMA2_IT_GL1: DMA2 Channel1 global interrupt.
+  *     @arg DMA2_IT_TC1: DMA2 Channel1 transfer complete interrupt.
+  *     @arg DMA2_IT_HT1: DMA2 Channel1 half transfer interrupt.
+  *     @arg DMA2_IT_TE1: DMA2 Channel1 transfer error interrupt.
+  *     @arg DMA2_IT_GL2: DMA2 Channel2 global interrupt.
+  *     @arg DMA2_IT_TC2: DMA2 Channel2 transfer complete interrupt.
+  *     @arg DMA2_IT_HT2: DMA2 Channel2 half transfer interrupt.
+  *     @arg DMA2_IT_TE2: DMA2 Channel2 transfer error interrupt.
+  *     @arg DMA2_IT_GL3: DMA2 Channel3 global interrupt.
+  *     @arg DMA2_IT_TC3: DMA2 Channel3 transfer complete interrupt.
+  *     @arg DMA2_IT_HT3: DMA2 Channel3 half transfer interrupt.
+  *     @arg DMA2_IT_TE3: DMA2 Channel3 transfer error interrupt.
+  *     @arg DMA2_IT_GL4: DMA2 Channel4 global interrupt.
+  *     @arg DMA2_IT_TC4: DMA2 Channel4 transfer complete interrupt.
+  *     @arg DMA2_IT_HT4: DMA2 Channel4 half transfer interrupt.
+  *     @arg DMA2_IT_TE4: DMA2 Channel4 transfer error interrupt.
+  *     @arg DMA2_IT_GL5: DMA2 Channel5 global interrupt.
+  *     @arg DMA2_IT_TC5: DMA2 Channel5 transfer complete interrupt.
+  *     @arg DMA2_IT_HT5: DMA2 Channel5 half transfer interrupt.
+  *     @arg DMA2_IT_TE5: DMA2 Channel5 transfer error interrupt.   
+  *     
+  * @note
+  *    Clearing the Global interrupt (DMAy_IT_GLx) results in clearing all other 
+  *    interrupts relative to the same channel (Transfer Complete, Half-transfer 
+  *    Complete and Transfer Error interrupts: DMAy_IT_TCx, DMAy_IT_HTx and 
+  *    DMAy_IT_TEx).  
+  *        
+  * @retval None
+  */
+void DMA_ClearITPendingBit(uint32_t DMAy_IT)
+{
+  /* Check the parameters */
+  assert_param(IS_DMA_CLEAR_IT(DMAy_IT));
+
+  /* Calculate the used DMAy */
+  if ((DMAy_IT & FLAG_MASK) == (uint32_t)RESET)
+  {
+    /* Clear the selected DMAy interrupt pending bits */
+    DMA1->IFCR = DMAy_IT;
+  }
+  else
+  {
+    /* Clear the selected DMAy interrupt pending bits */
+    DMA2->IFCR = DMAy_IT;
+  }  
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/