rt-thread/bsp/ft32/libraries/FT32F0xx/FT32F0xx_Driver/Src/ft32f0xx_dma.c

/**
  ******************************************************************************
  * @file               ft32f0xx_dma.c
  * @author             FMD AE
  * @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
  * @version            V1.0.0
  * @data                   2021-07-01
    ******************************************************************************
  */


/* Includes ------------------------------------------------------------------*/
#include "ft32f0xx_dma.h"


/** @defgroup DMA
  * @brief DMA driver modules
  * @{
  */

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define CCR_CLEAR_MASK   ((uint32_t)0xFFFF800F) /* DMA Channel config registers Masks */
#define FLAG_Mask        ((uint32_t)0x10000000) /* DMA2 FLAG mask */

/* 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))



/**
  * @brief  Deinitializes the DMAy Channelx registers to their default reset
  *         values.
  * @param  DMAy_Channelx: where y can be 1 to select the DMA and
  *         x can be 1 to 7 for DMA1 to select the DMA Channel.
  * @note
  * @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_CCR_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;
//  }
}

/**
  * @brief  Initializes the DMAy Channelx according to the specified parameters
  *         in the DMA_InitStruct.
  * @param  DMAy_Channelx: where y can be 1 to select the DMA and x can be 1 to 7
  *         for DMA1 to select the DMA Channel and 1 to 5 for DMA2 to select the DMA Channel.
  * @note
  * @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 to select the DMA and x can be 1 to 7
  *         for DMA1 to select the DMA Channel 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_CCR_EN;
  }
  else
  {
    /* Disable the selected DMAy Channelx */
    DMAy_Channelx->CCR &= (uint16_t)(~DMA_CCR_EN);
  }
}
/**
  * @}
  */



/**
  * @brief  Sets the number of data units in the current DMAy Channelx transfer.
  * @param  DMAy_Channelx: where y can be 1 to select the DMA and x can be 1 to 7
  *         for DMA1 to select the DMA Channel 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 to select the DMA and x can be 1 to 7
  *         for DMA1 to select the DMA Channel 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));
}

/**
  * @}
  */


/**
  * @brief  Enables or disables the specified DMAy Channelx interrupts.
  * @param  DMAy_Channelx: where y can be 1 to select the DMA and x can be 1 to 7
  *         for DMA1 to select the DMA Channel 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  DMA_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 ot
  *         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 DMA_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)
  {
        ;
  }
  else
  {
    /* Get DMA1 ISR register value */
    tmpreg = DMA1->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  DMA_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));

/* Calculate the used DMAy */
  if ((DMAy_FLAG & FLAG_Mask) != (uint32_t)RESET)
  {
        ;
  }
  else
  {
    /* Clear the selected DMAy flags */
    DMA1->IFCR = DMAy_FLAG;
  }
}

/**
  * @brief  Checks whether the specified DMAy Channelx interrupt has occurred or not.
  * @param  DMA_IT: specifies the DMA 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 DMA_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 DMA */
  if ((DMAy_IT & FLAG_Mask) != (uint32_t)RESET)
  {
        ;
  }
  else
  {
    /* Get DMA1 ISR register value */
    tmpreg = DMA1->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  DMA_IT: specifies the DMA 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
  * @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)
  {
        ;
  }
  else
  {
    /* Clear the selected DMAy interrupt pending bits */
    DMA1->IFCR = DMAy_IT;
  }
}

/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

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