Diff: lpc17xx_dac.h

Revision:

0:84d7747641aa

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lpc17xx_dac.h	Sun Mar 20 18:45:15 2011 +0000
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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 ------------------------------ */
+