Ejemplos de __DMA_CLK_CMD en C++ (Cpp)

Ejemplo n.º 1

Archivo: cpal_i2c_hal_stm32f4xx.c Proyecto: DroneBucket/Drone_Bucket_CrazyFlie2_STM_Bootloader

/**
  * @brief  Enable the DMA clock and initialize needed DMA Streams 
  *         used by the I2C device.
  * @param  Device : I2C Device instance.
  * @param  Direction : Transfer direction.
  * @param  Options :  Transfer Options.
  * @retval None. 
  */             
void CPAL_I2C_HAL_DMAInit(CPAL_DevTypeDef Device, CPAL_DirectionTypeDef Direction, uint32_t Options)
{  
  /* Enable I2Cx DMA */
  __DMA_CLK_CMD(CPAL_I2C_DMA_CLK[Device], ENABLE);
  
  /* I2Cx Common Stream Configuration */
  CPAL_DMA_InitStructure.DMA_Channel = CPAL_I2C_DMA_CHANNEL[Device];
  CPAL_DMA_InitStructure.DMA_Memory0BaseAddr = 0;
  CPAL_DMA_InitStructure.DMA_BufferSize = 0;
  CPAL_DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  CPAL_DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
  CPAL_DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
  CPAL_DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
  CPAL_DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
  CPAL_DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
  CPAL_DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
  CPAL_DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_1QuarterFull;
  CPAL_DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
  CPAL_DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
  
  /* Select I2Cx DR Address register as DMA PeripheralBaseAddress */
  CPAL_DMA_InitStructure.DMA_PeripheralBaseAddr = CPAL_I2C_DR [Device];
  
  /* If TX Direction (Transmission) selected */
  if ((Direction & CPAL_DIRECTION_TX) != 0)
  {         
    /* Select Memory to Peripheral transfer direction */
    CPAL_DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
    
    /* Initialize I2Cx DMA Tx Stream */
    DMA_Init((DMA_Stream_TypeDef*)CPAL_I2C_DMA_TX_Stream[Device], &CPAL_DMA_InitStructure);   
  }
  
  /* If RX Direction (Reception) selected */
  if ((Direction & CPAL_DIRECTION_RX ) != 0)
  {  
    /* Select Peripheral to Memory transfer direction */
    CPAL_DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
    
    /* Initialize I2Cx DMA Rx Stream */
    DMA_Init((DMA_Stream_TypeDef*)CPAL_I2C_DMA_RX_Stream[Device], &CPAL_DMA_InitStructure);   
  }
}

Ejemplo n.º 2

Archivo: stm32f37x_i2c_cpal_hal.c Proyecto: jgobuyan/bootloader

/**
  * @brief  Enable the DMA clock and initialize needed DMA Channels
  *         used by the I2C device.
  * @param  Device : I2C Device instance.
  * @param  Direction : Transfer direction.
  * @param  Options : Transfer Options.
  * @retval None.
  */
void CPAL_I2C_HAL_DMAInit(CPAL_DevTypeDef Device, CPAL_DirectionTypeDef Direction, uint32_t Options)
{
  /* Enable I2Cx DMA */
  __DMA_CLK_CMD(CPAL_I2C_DMA_CLK[Device], ENABLE);

  /* I2Cx Common Channel Configuration */
  CPAL_DMA_InitStructure.DMA_BufferSize = 0xFFFF;
  CPAL_DMA_InitStructure.DMA_PeripheralInc =  DMA_PeripheralInc_Disable;
  CPAL_DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
  CPAL_DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte ;
  CPAL_DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
  CPAL_DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
  CPAL_DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
  CPAL_DMA_InitStructure.DMA_MemoryBaseAddr = 0;
  CPAL_DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;

  /* If TX Direction (Transmission) selected */
  if ((Direction & CPAL_DIRECTION_TX) != 0)
  {
    /* Select I2Cx TXDR Address register as DMA PeripheralBaseAddress */
    CPAL_DMA_InitStructure.DMA_PeripheralBaseAddr = CPAL_I2C_TXDR [Device];

    /* Select Memory to Peripheral transfer direction */
    CPAL_DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;

    /* Initialize I2Cx DMA Tx Channel */
    DMA_Init((DMA_Channel_TypeDef*)CPAL_I2C_DMA_TX_Channel[Device], &CPAL_DMA_InitStructure);
  }

  /* If RX Direction (Reception) selected */
  if ((Direction & CPAL_DIRECTION_RX ) != 0)
  {
    /* Select I2Cx RXDR Address register as DMA PeripheralBaseAddress */
    CPAL_DMA_InitStructure.DMA_PeripheralBaseAddr = CPAL_I2C_RXDR [Device];

    /* Select Peripheral to Memory transfer direction */
    CPAL_DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;

    /* Initialize I2Cx DMA Rx Channel */
    DMA_Init((DMA_Channel_TypeDef*)CPAL_I2C_DMA_RX_Channel[Device], &CPAL_DMA_InitStructure);
  }
}