lpc17xx_exti.h (4535B)
1 /********************************************************************** 2 * $Id$ lpc17xx_exti.h 2010-05-21 3 *//** 4 * @file lpc17xx_exti.h 5 * @brief Contains all macro definitions and function prototypes 6 * support for External interrupt 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 EXTI EXTI (External Interrupt) 35 * @ingroup LPC1700CMSIS_FwLib_Drivers 36 * @{ 37 */ 38 39 #ifndef LPC17XX_EXTI_H_ 40 #define LPC17XX_EXTI_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 53 /* Private Macros ------------------------------------------------------------- */ 54 /** @defgroup EXTI_Private_Macros EXTI Private Macros 55 * @{ 56 */ 57 /*********************************************************************//** 58 * Macro defines for EXTI control register 59 **********************************************************************/ 60 #define EXTI_EINT0_BIT_MARK 0x01 61 #define EXTI_EINT1_BIT_MARK 0x02 62 #define EXTI_EINT2_BIT_MARK 0x04 63 #define EXTI_EINT3_BIT_MARK 0x08 64 65 /** 66 * @} 67 */ 68 69 /* Private Macros ------------------------------------------------------------- */ 70 /** @defgroup EXTI_Public_Types EXTI Public Types 71 * @{ 72 */ 73 74 /** 75 * @brief EXTI external interrupt line option 76 */ 77 typedef enum 78 { 79 EXTI_EINT0, /*!< External interrupt 0, P2.10 */ 80 EXTI_EINT1, /*!< External interrupt 0, P2.11 */ 81 EXTI_EINT2, /*!< External interrupt 0, P2.12 */ 82 EXTI_EINT3 /*!< External interrupt 0, P2.13 */ 83 } EXTI_LINE_ENUM; 84 85 /** 86 * @brief EXTI mode option 87 */ 88 typedef enum 89 { 90 EXTI_MODE_LEVEL_SENSITIVE, /*!< Level sensitivity is selected */ 91 EXTI_MODE_EDGE_SENSITIVE /*!< Edge sensitivity is selected */ 92 } EXTI_MODE_ENUM; 93 94 /** 95 * @brief EXTI polarity option 96 */ 97 typedef enum 98 { 99 EXTI_POLARITY_LOW_ACTIVE_OR_FALLING_EDGE, /*!< Low active or falling edge sensitive 100 depending on pin mode */ 101 EXTI_POLARITY_HIGH_ACTIVE_OR_RISING_EDGE /*!< High active or rising edge sensitive 102 depending on pin mode */ 103 } EXTI_POLARITY_ENUM; 104 105 /** 106 * @brief EXTI Initialize structure 107 */ 108 typedef struct 109 { 110 EXTI_LINE_ENUM EXTI_Line; /*!<Select external interrupt pin (EINT0, EINT1, EINT 2, EINT3) */ 111 112 EXTI_MODE_ENUM EXTI_Mode; /*!< Choose between Level-sensitivity or Edge sensitivity */ 113 114 EXTI_POLARITY_ENUM EXTI_polarity; /*!< If EXTI mode is level-sensitive: this element use to select low or high active level 115 if EXTI mode is polarity-sensitive: this element use to select falling or rising edge */ 116 117 }EXTI_InitTypeDef; 118 119 120 /** 121 * @} 122 */ 123 124 125 /* Public Functions ----------------------------------------------------------- */ 126 /** @defgroup EXTI_Public_Functions EXTI Public Functions 127 * @{ 128 */ 129 130 void EXTI_Init(void); 131 void EXTI_DeInit(void); 132 133 void EXTI_Config(EXTI_InitTypeDef *EXTICfg); 134 void EXTI_SetMode(EXTI_LINE_ENUM EXTILine, EXTI_MODE_ENUM mode); 135 void EXTI_SetPolarity(EXTI_LINE_ENUM EXTILine, EXTI_POLARITY_ENUM polarity); 136 void EXTI_ClearEXTIFlag(EXTI_LINE_ENUM EXTILine); 137 138 139 /** 140 * @} 141 */ 142 143 144 #ifdef __cplusplus 145 } 146 #endif 147 148 149 #endif /* LPC17XX_EXTI_H_ */ 150 151 /** 152 * @} 153 */ 154 155 /* --------------------------------- End Of File ------------------------------ */