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/***********************************************************************//**
* @file lpc17xx_dac.h
* @brief Contains all macro definitions and function prototypes
* support for DAC firmware library on LPC17xx
* @version 3.0
* @date 18. June. 2010
* @author NXP MCU SW Application Team
**************************************************************************
* 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.
**************************************************************************/
/* Peripheral group ----------------------------------------------------------- */
/** @defgroup DAC DAC
* @ingroup LPC1700CMSIS_FwLib_Drivers
* @{
*/
#ifndef LPC17XX_DAC_H_
#define LPC17XX_DAC_H_
/* Includes ------------------------------------------------------------------- */
#include "LPC17xx.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_TypeDef *DACx);
void DAC_UpdateValue (LPC_DAC_TypeDef *DACx, uint32_t dac_value);
void DAC_SetBias (LPC_DAC_TypeDef *DACx,uint32_t bias);
void DAC_ConfigDAConverterControl (LPC_DAC_TypeDef *DACx,DAC_CONVERTER_CFG_Type *DAC_ConverterConfigStruct);
void DAC_SetDMATimeOut(LPC_DAC_TypeDef *DACx,uint32_t time_out);
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* LPC17XX_DAC_H_ */
/**
* @}
*/
/* --------------------------------- End Of File ------------------------------ */
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