|
|
/***********************************************************************//**
|
|
|
* @file : lpc17xx_dac.h
|
|
|
* @brief : Contains all macro definitions and function prototypes
|
|
|
* support for DAC firmware library on LPC17xx
|
|
|
* @version : 1.0
|
|
|
* @date : 3. April. 2009
|
|
|
* @author : HieuNguyen
|
|
|
**************************************************************************
|
|
|
* 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
|
|
|
* @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 Types --------------------------------------------------------------- */
|
|
|
/** @defgroup DAC_Public_Types
|
|
|
* @{
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @brief Current option in ADC confuration 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;
|
|
|
#define PARAM_DAC_CURRENT_OPT(OPTION) ((OPTION == DAC_MAX_CURRENT_700uA)\
|
|
|
||(OPTION == DAC_MAX_CURRENT_350uA))
|
|
|
|
|
|
/**
|
|
|
* @brief Configuration for DA 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 Macros -------------------------------------------------------------- */
|
|
|
/** @defgroup DAC_Public_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&0xff))
|
|
|
|
|
|
/** 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))
|
|
|
|
|
|
/**
|
|
|
* @}
|
|
|
*/
|
|
|
|
|
|
/* Public Functions ----------------------------------------------------------- */
|
|
|
/** @defgroup 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 ------------------------------ */
|
|
|
|
|
|
|
