text: /**********************************************************************
  * $Id$		lpc43xx_dac.h			2011-06-02
  *//**
  * @file		lpc43xx_dac.h
  * @brief	Contains all macro definitions and function prototypes
  * 			support for DAC firmware library on lpc43xx
  * @version	1.0
  * @date		02. June. 2011
  * @author	NXP MCU SW Application Team
  *
  * Copyright(C) 2011, NXP Semiconductor
  * All rights reserved.
  *
  ***********************************************************************
  * Software that is described herein is for illustrative purposes only
  * which provides customers with programming information regarding the
  * products. This software is supplied "AS IS" without any warranties.
  * NXP Semiconductors assumes no responsibility or liability for the
  * use of the software, conveys no license or title under any patent,
  * copyright, or mask work right to the product. NXP Semiconductors
  * reserves the right to make changes in the software without
  * notification. NXP Semiconductors also make no representation or
  * warranty that such application will be suitable for the specified
  * use without further testing or modification.
  * Permission to use, copy, modify, and distribute this software and its
  * documentation is hereby granted, under NXP Semiconductors�
  * relevant copyright in the software, without fee, provided that it
  * is used in conjunction with NXP Semiconductors microcontrollers.  This
  * copyright, permission, and disclaimer notice must appear in all copies of
  * this code.
  **********************************************************************/
  
  /* Peripheral group ----------------------------------------------------------- */
  /** @defgroup DAC DAC (Digital to Analog Converter)
   * @ingroup LPC4300CMSIS_FwLib_Drivers
   * @{
   */
  
  #ifndef lpc43xx_DAC_H_
  #define lpc43xx_DAC_H_
  
  /* Includes ------------------------------------------------------------------- */
  #include "LPC43xx.h"
  #include "lpc_types.h"
  
  
  #ifdef __cplusplus
  extern "C"
  {
  #endif
  
  /* Public Macros -------------------------------------------------------------- */
  /** @defgroup DAC_Private_Macros DAC Private Macros
   * @{
   */
  
  /** After the selected settling time after this field is written with a
  new VALUE, the voltage on the AOUT pin (with respect to VSSA)
  is VALUE/1024 � VREF */
  #define DAC_VALUE(n) 		((uint32_t)((n&0x3FF)<<6))
  /** If this bit = 0: The settling time of the DAC is 1 microsecond max,
   * and the maximum current is 700 microAmpere
   * If this bit = 1: The settling time of the DAC is 2.5 microsecond
   * and the maximum current is 350 microAmpere */
  #define DAC_BIAS_EN			((uint32_t)(1<<16))
  /** Value to reload interrupt DMA counter */
  #define DAC_CCNT_VALUE(n)  ((uint32_t)(n&0xffff))
  
  /** DCAR double buffering */
  #define DAC_DBLBUF_ENA		((uint32_t)(1<<1))
  /** DCAR Time out count enable */
  #define DAC_CNT_ENA			((uint32_t)(1<<2))
  /** DCAR DMA access */
  #define DAC_DMA_ENA			((uint32_t)(1<<3))
  /** DCAR DACCTRL mask bit */
  #define DAC_DACCTRL_MASK	((uint32_t)(0x0F))
  
  /** Macro to determine if it is valid DAC peripheral */
  #define PARAM_DACx(n)	(((uint32_t *)n)==((uint32_t *)LPC_DAC))
  
  /** Macro to check DAC current optional parameter */
  #define	PARAM_DAC_CURRENT_OPT(OPTION) ((OPTION == DAC_MAX_CURRENT_700uA)\
  ||(OPTION == DAC_MAX_CURRENT_350uA))
  
  /**
   * @}
   */
  /* Public Types --------------------------------------------------------------- */
  /** @defgroup DAC_Public_Types DAC Public Types
   * @{
   */
  
  /**
   * @brief Current option in DAC configuration option */
  typedef enum
  {
  	DAC_MAX_CURRENT_700uA = 0, 	/*!< The settling time of the DAC is 1 us max,
  								and the maximum	current is 700 uA */
  	DAC_MAX_CURRENT_350uA		/*!< The settling time of the DAC is 2.5 us
  								and the maximum current is 350 uA */
  } DAC_CURRENT_OPT;
  
  /**
   * @brief Configuration for DAC converter control register */
  typedef struct
  {
  
  	uint8_t  DBLBUF_ENA; 		/**<
  	                         		-0: Disable DACR double buffering
  	                         		-1: when bit CNT_ENA, enable DACR double buffering feature
  							 	*/
  	uint8_t  CNT_ENA;			/*!<
  	                         		-0: Time out counter is disable
  	                         		-1: Time out conter is enable
  							 	*/
  	uint8_t  DMA_ENA;			/*!<
  		                         	-0: DMA access is disable
  		                         	-1: DMA burst request
  								*/
  	uint8_t RESERVED;
  
  } DAC_CONVERTER_CFG_Type;
  
  /**
   * @}
   */
  
  /* Public Functions ----------------------------------------------------------- */
  /** @defgroup DAC_Public_Functions DAC Public Functions
   * @{
   */
  
  void 	DAC_Init(LPC_DAC_Type *DACx);
  void    DAC_UpdateValue (LPC_DAC_Type *DACx, uint32_t dac_value);
  void    DAC_SetBias (LPC_DAC_Type *DACx,uint32_t bias);
  void    DAC_ConfigDAConverterControl (LPC_DAC_Type *DACx,DAC_CONVERTER_CFG_Type *DAC_ConverterConfigStruct);
  void 	DAC_SetDMATimeOut(LPC_DAC_Type *DACx,uint32_t time_out);
  
  /**
   * @}
   */
  
  #ifdef __cplusplus
  }
  #endif
  
  
  #endif /* lpc43xx_DAC_H_ */
  
  /**
   * @}
   */
  
  /* --------------------------------- End Of File ------------------------------ */
  