lpc17xx_dac.h (5045B)
1 /********************************************************************** 2 * $Id$ lpc17xx_dac.h 2010-05-21 3 *//** 4 * @file lpc17xx_dac.h 5 * @brief Contains all macro definitions and function prototypes 6 * support for Clock and Power Control firmware library on LPC17xx 7 * @version 2.0 8 * @date 21. May. 2010 9 * @author NXP MCU SW Application Team 10 * 11 * Copyright(C) 2010, NXP Semiconductor 12 * All rights reserved. 13 * 14 *********************************************************************** 15 * Software that is described herein is for illustrative purposes only 16 * which provides customers with programming information regarding the 17 * products. This software is supplied "AS IS" without any warranties. 18 * NXP Semiconductors assumes no responsibility or liability for the 19 * use of the software, conveys no license or title under any patent, 20 * copyright, or mask work right to the product. NXP Semiconductors 21 * reserves the right to make changes in the software without 22 * notification. NXP Semiconductors also make no representation or 23 * warranty that such application will be suitable for the specified 24 * use without further testing or modification. 25 * Permission to use, copy, modify, and distribute this software and its 26 * documentation is hereby granted, under NXP Semiconductors' 27 * relevant copyright in the software, without fee, provided that it 28 * is used in conjunction with NXP Semiconductors microcontrollers. This 29 * copyright, permission, and disclaimer notice must appear in all copies of 30 * this code. 31 **********************************************************************/ 32 33 /* Peripheral group ----------------------------------------------------------- */ 34 /** @defgroup DAC DAC (Digital-to-Analog Controller) 35 * @ingroup LPC1700CMSIS_FwLib_Drivers 36 * @{ 37 */ 38 39 #ifndef LPC17XX_DAC_H_ 40 #define LPC17XX_DAC_H_ 41 42 /* Includes ------------------------------------------------------------------- */ 43 #include "LPC17xx.h" 44 #include "lpc_types.h" 45 46 47 #ifdef __cplusplus 48 extern "C" 49 { 50 #endif 51 52 /* Public Macros -------------------------------------------------------------- */ 53 /** @defgroup DAC_Private_Macros DAC Private Macros 54 * @{ 55 */ 56 57 /** After the selected settling time after this field is written with a 58 new VALUE, the voltage on the AOUT pin (with respect to VSSA) 59 is VALUE/1024 × VREF */ 60 #define DAC_VALUE(n) ((uint32_t)((n&0x3FF)<<6)) 61 /** If this bit = 0: The settling time of the DAC is 1 microsecond max, 62 * and the maximum current is 700 microAmpere 63 * If this bit = 1: The settling time of the DAC is 2.5 microsecond 64 * and the maximum current is 350 microAmpere */ 65 #define DAC_BIAS_EN ((uint32_t)(1<<16)) 66 /** Value to reload interrupt DMA counter */ 67 #define DAC_CCNT_VALUE(n) ((uint32_t)(n&0xffff)) 68 69 /** DCAR double buffering */ 70 #define DAC_DBLBUF_ENA ((uint32_t)(1<<1)) 71 /** DCAR Time out count enable */ 72 #define DAC_CNT_ENA ((uint32_t)(1<<2)) 73 /** DCAR DMA access */ 74 #define DAC_DMA_ENA ((uint32_t)(1<<3)) 75 /** DCAR DACCTRL mask bit */ 76 #define DAC_DACCTRL_MASK ((uint32_t)(0x0F)) 77 78 /** Macro to determine if it is valid DAC peripheral */ 79 #define PARAM_DACx(n) (((uint32_t *)n)==((uint32_t *)LPC_DAC)) 80 81 /** Macro to check DAC current optional parameter */ 82 #define PARAM_DAC_CURRENT_OPT(OPTION) ((OPTION == DAC_MAX_CURRENT_700uA)\ 83 ||(OPTION == DAC_MAX_CURRENT_350uA)) 84 /** 85 * @} 86 */ 87 /* Public Types --------------------------------------------------------------- */ 88 /** @defgroup DAC_Public_Types DAC Public Types 89 * @{ 90 */ 91 92 /** 93 * @brief Current option in DAC configuration option */ 94 typedef enum 95 { 96 DAC_MAX_CURRENT_700uA = 0, /*!< The settling time of the DAC is 1 us max, 97 and the maximum current is 700 uA */ 98 DAC_MAX_CURRENT_350uA /*!< The settling time of the DAC is 2.5 us 99 and the maximum current is 350 uA */ 100 } DAC_CURRENT_OPT; 101 102 /** 103 * @brief Configuration for DAC converter control register */ 104 typedef struct 105 { 106 107 uint8_t DBLBUF_ENA; /**< 108 -0: Disable DACR double buffering 109 -1: when bit CNT_ENA, enable DACR double buffering feature 110 */ 111 uint8_t CNT_ENA; /*!< 112 -0: Time out counter is disable 113 -1: Time out conter is enable 114 */ 115 uint8_t DMA_ENA; /*!< 116 -0: DMA access is disable 117 -1: DMA burst request 118 */ 119 uint8_t RESERVED; 120 121 } DAC_CONVERTER_CFG_Type; 122 123 /** 124 * @} 125 */ 126 127 /* Public Functions ----------------------------------------------------------- */ 128 /** @defgroup DAC_Public_Functions DAC Public Functions 129 * @{ 130 */ 131 132 void DAC_Init(LPC_DAC_TypeDef *DACx); 133 void DAC_UpdateValue (LPC_DAC_TypeDef *DACx, uint32_t dac_value); 134 void DAC_SetBias (LPC_DAC_TypeDef *DACx,uint32_t bias); 135 void DAC_ConfigDAConverterControl (LPC_DAC_TypeDef *DACx,DAC_CONVERTER_CFG_Type *DAC_ConverterConfigStruct); 136 void DAC_SetDMATimeOut(LPC_DAC_TypeDef *DACx,uint32_t time_out); 137 138 /** 139 * @} 140 */ 141 142 #ifdef __cplusplus 143 } 144 #endif 145 146 147 #endif /* LPC17XX_DAC_H_ */ 148 149 /** 150 * @} 151 */ 152 153 /* --------------------------------- End Of File ------------------------------ */ 154