/**
  ******************************************************************************
  * @file    stm32l1xx_dma.h
  * @author  MCD Application Team
  * @version V1.1.0
  * @date    24-January-2012
  * @brief   This file contains all the functions prototypes for the DMA firmware 
  *          library.
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * FOR MORE INFORMATION PLEASE READ CAREFULLY THE LICENSE AGREEMENT FILE
  * LOCATED IN THE ROOT DIRECTORY OF THIS FIRMWARE PACKAGE.
  *
  * <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>
  ******************************************************************************
  */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L1xx_DMA_H
#define __STM32L1xx_DMA_H

#ifdef __cplusplus
 extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32l1xx.h"

/** @addtogroup STM32L1xx_StdPeriph_Driver
  * @{
  */

/** @addtogroup DMA
  * @{
  */

/* Exported types ------------------------------------------------------------*/

/** 
  * @brief  DMA Init structure definition
  */

typedef struct
{
  uint32_t DMA_PeripheralBaseAddr; /*!< Specifies the peripheral base address for DMAy Channelx. */

  uint32_t DMA_MemoryBaseAddr;     /*!< Specifies the memory base address for DMAy Channelx. */

  uint32_t DMA_DIR;                /*!< Specifies if the peripheral is the source or destination.
                                        This parameter can be a value of @ref DMA_data_transfer_direction */

  uint32_t DMA_BufferSize;         /*!< Specifies the buffer size, in data unit, of the specified Channel. 
                                        The data unit is equal to the configuration set in DMA_PeripheralDataSize
                                        or DMA_MemoryDataSize members depending in the transfer direction. */

  uint32_t DMA_PeripheralInc;      /*!< Specifies whether the Peripheral address register is incremented or not.
                                        This parameter can be a value of @ref DMA_peripheral_incremented_mode */

  uint32_t DMA_MemoryInc;          /*!< Specifies whether the memory address register is incremented or not.
                                        This parameter can be a value of @ref DMA_memory_incremented_mode */

  uint32_t DMA_PeripheralDataSize; /*!< Specifies the Peripheral data width.
                                        This parameter can be a value of @ref DMA_peripheral_data_size */

  uint32_t DMA_MemoryDataSize;     /*!< Specifies the Memory data width.
                                        This parameter can be a value of @ref DMA_memory_data_size */

  uint32_t DMA_Mode;               /*!< Specifies the operation mode of the DMAy Channelx.
                                        This parameter can be a value of @ref DMA_circular_normal_mode
                                        @note: The circular buffer mode cannot be used if the memory-to-memory
                                              data transfer is configured on the selected Channel */

  uint32_t DMA_Priority;           /*!< Specifies the software priority for the DMAy Channelx.
                                        This parameter can be a value of @ref DMA_priority_level */

  uint32_t DMA_M2M;                /*!< Specifies if the DMAy Channelx will be used in memory-to-memory transfer.
                                        This parameter can be a value of @ref DMA_memory_to_memory */
}DMA_InitTypeDef;

/* Exported constants --------------------------------------------------------*/

/** @defgroup DMA_Exported_Constants
  * @{
  */

#define IS_DMA_ALL_PERIPH(PERIPH) (((PERIPH) == DMA1_Channel1) || \
                                   ((PERIPH) == DMA1_Channel2) || \
                                   ((PERIPH) == DMA1_Channel3) || \
                                   ((PERIPH) == DMA1_Channel4) || \
                                   ((PERIPH) == DMA1_Channel5) || \
                                   ((PERIPH) == DMA1_Channel6) || \
                                   ((PERIPH) == DMA1_Channel7) || \
                                   ((PERIPH) == DMA2_Channel1) || \
                                   ((PERIPH) == DMA2_Channel2) || \
                                   ((PERIPH) == DMA2_Channel3) || \
                                   ((PERIPH) == DMA2_Channel4) || \
                                   ((PERIPH) == DMA2_Channel5))

/** @defgroup DMA_data_transfer_direction 
  * @{
  */

#define DMA_DIR_PeripheralDST              ((uint32_t)0x00000010)
#define DMA_DIR_PeripheralSRC              ((uint32_t)0x00000000)
#define IS_DMA_DIR(DIR) (((DIR) == DMA_DIR_PeripheralDST) || \
                         ((DIR) == DMA_DIR_PeripheralSRC))
/**
  * @}
  */

/** @defgroup DMA_peripheral_incremented_mode 
  * @{
  */

#define DMA_PeripheralInc_Enable           ((uint32_t)0x00000040)
#define DMA_PeripheralInc_Disable          ((uint32_t)0x00000000)
#define IS_DMA_PERIPHERAL_INC_STATE(STATE) (((STATE) == DMA_PeripheralInc_Enable) || \
                                            ((STATE) == DMA_PeripheralInc_Disable))
/**
  * @}
  */

/** @defgroup DMA_memory_incremented_mode 
  * @{
  */

#define DMA_MemoryInc_Enable               ((uint32_t)0x00000080)
#define DMA_MemoryInc_Disable              ((uint32_t)0x00000000)
#define IS_DMA_MEMORY_INC_STATE(STATE) (((STATE) == DMA_MemoryInc_Enable) || \
                                        ((STATE) == DMA_MemoryInc_Disable))
/**
  * @}
  */

/** @defgroup DMA_peripheral_data_size 
  * @{
  */

#define DMA_PeripheralDataSize_Byte        ((uint32_t)0x00000000)
#define DMA_PeripheralDataSize_HalfWord    ((uint32_t)0x00000100)
#define DMA_PeripheralDataSize_Word        ((uint32_t)0x00000200)
#define IS_DMA_PERIPHERAL_DATA_SIZE(SIZE) (((SIZE) == DMA_PeripheralDataSize_Byte) || \
                                           ((SIZE) == DMA_PeripheralDataSize_HalfWord) || \
                                           ((SIZE) == DMA_PeripheralDataSize_Word))
/**
  * @}
  */

/** @defgroup DMA_memory_data_size 
  * @{
  */

#define DMA_MemoryDataSize_Byte            ((uint32_t)0x00000000)
#define DMA_MemoryDataSize_HalfWord        ((uint32_t)0x00000400)
#define DMA_MemoryDataSize_Word            ((uint32_t)0x00000800)
#define IS_DMA_MEMORY_DATA_SIZE(SIZE) (((SIZE) == DMA_MemoryDataSize_Byte) || \
                                       ((SIZE) == DMA_MemoryDataSize_HalfWord) || \
                                       ((SIZE) == DMA_MemoryDataSize_Word))
/**
  * @}
  */

/** @defgroup DMA_circular_normal_mode 
  * @{
  */

#define DMA_Mode_Circular                  ((uint32_t)0x00000020)
#define DMA_Mode_Normal                    ((uint32_t)0x00000000)
#define IS_DMA_MODE(MODE) (((MODE) == DMA_Mode_Circular) || ((MODE) == DMA_Mode_Normal))
/**
  * @}
  */

/** @defgroup DMA_priority_level 
  * @{
  */

#define DMA_Priority_VeryHigh              ((uint32_t)0x00003000)
#define DMA_Priority_High                  ((uint32_t)0x00002000)
#define DMA_Priority_Medium                ((uint32_t)0x00001000)
#define DMA_Priority_Low                   ((uint32_t)0x00000000)
#define IS_DMA_PRIORITY(PRIORITY) (((PRIORITY) == DMA_Priority_VeryHigh) || \
                                   ((PRIORITY) == DMA_Priority_High) || \
                                   ((PRIORITY) == DMA_Priority_Medium) || \
                                   ((PRIORITY) == DMA_Priority_Low))
/**
  * @}
  */

/** @defgroup DMA_memory_to_memory 
  * @{
  */

#define DMA_M2M_Enable                     ((uint32_t)0x00004000)
#define DMA_M2M_Disable                    ((uint32_t)0x00000000)
#define IS_DMA_M2M_STATE(STATE) (((STATE) == DMA_M2M_Enable) || ((STATE) == DMA_M2M_Disable))

/**
  * @}
  */

/** @defgroup DMA_interrupts_definition 
  * @{
  */

#define DMA_IT_TC                          ((uint32_t)0x00000002)
#define DMA_IT_HT                          ((uint32_t)0x00000004)
#define DMA_IT_TE                          ((uint32_t)0x00000008)
#define IS_DMA_CONFIG_IT(IT) ((((IT) & 0xFFFFFFF1) == 0x00) && ((IT) != 0x00))