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