156 lines
4.4 KiB
C
156 lines
4.4 KiB
C
/**********************************************************************
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* $Id$ lpc17xx_exti.h 2010-05-21
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*//**
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* @file lpc17xx_exti.h
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* @brief Contains all macro definitions and function prototypes
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* support for External interrupt firmware library on LPC17xx
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* @version 2.0
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* @date 21. May. 2010
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* @author NXP MCU SW Application Team
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*
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* Copyright(C) 2010, NXP Semiconductor
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* All rights reserved.
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*
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***********************************************************************
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* products. This software is supplied "AS IS" without any warranties.
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* NXP Semiconductors assumes no responsibility or liability for the
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* use of the software, conveys no license or title under any patent,
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* copyright, or mask work right to the product. NXP Semiconductors
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* reserves the right to make changes in the software without
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* notification. NXP Semiconductors also make no representation or
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* warranty that such application will be suitable for the specified
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* use without further testing or modification.
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, under NXP Semiconductors'
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* relevant copyright in the software, without fee, provided that it
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* is used in conjunction with NXP Semiconductors microcontrollers. This
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* copyright, permission, and disclaimer notice must appear in all copies of
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* this code.
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**********************************************************************/
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/* Peripheral group ----------------------------------------------------------- */
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/** @defgroup EXTI EXTI (External Interrupt)
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* @ingroup LPC1700CMSIS_FwLib_Drivers
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* @{
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*/
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#ifndef LPC17XX_EXTI_H_
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#define LPC17XX_EXTI_H_
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/* Includes ------------------------------------------------------------------- */
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#include "LPC17xx.h"
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#include "lpc_types.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* Private Macros ------------------------------------------------------------- */
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/** @defgroup EXTI_Private_Macros EXTI Private Macros
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* @{
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*/
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/*********************************************************************//**
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* Macro defines for EXTI control register
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**********************************************************************/
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#define EXTI_EINT0_BIT_MARK 0x01
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#define EXTI_EINT1_BIT_MARK 0x02
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#define EXTI_EINT2_BIT_MARK 0x04
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#define EXTI_EINT3_BIT_MARK 0x08
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/**
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* @}
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*/
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/* Private Macros ------------------------------------------------------------- */
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/** @defgroup EXTI_Public_Types EXTI Public Types
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* @{
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*/
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/**
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* @brief EXTI external interrupt line option
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*/
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typedef enum
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{
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EXTI_EINT0, /*!< External interrupt 0, P2.10 */
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EXTI_EINT1, /*!< External interrupt 0, P2.11 */
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EXTI_EINT2, /*!< External interrupt 0, P2.12 */
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EXTI_EINT3 /*!< External interrupt 0, P2.13 */
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} EXTI_LINE_ENUM;
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/**
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* @brief EXTI mode option
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*/
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typedef enum
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{
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EXTI_MODE_LEVEL_SENSITIVE, /*!< Level sensitivity is selected */
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EXTI_MODE_EDGE_SENSITIVE /*!< Edge sensitivity is selected */
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} EXTI_MODE_ENUM;
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/**
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* @brief EXTI polarity option
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*/
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typedef enum
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{
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EXTI_POLARITY_LOW_ACTIVE_OR_FALLING_EDGE, /*!< Low active or falling edge sensitive
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depending on pin mode */
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EXTI_POLARITY_HIGH_ACTIVE_OR_RISING_EDGE /*!< High active or rising edge sensitive
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depending on pin mode */
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} EXTI_POLARITY_ENUM;
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/**
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* @brief EXTI Initialize structure
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*/
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typedef struct
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{
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EXTI_LINE_ENUM EXTI_Line; /*!<Select external interrupt pin (EINT0, EINT1, EINT 2, EINT3) */
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EXTI_MODE_ENUM EXTI_Mode; /*!< Choose between Level-sensitivity or Edge sensitivity */
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EXTI_POLARITY_ENUM EXTI_polarity; /*!< If EXTI mode is level-sensitive: this element use to select low or high active level
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if EXTI mode is polarity-sensitive: this element use to select falling or rising edge */
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}EXTI_InitTypeDef;
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/**
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* @}
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*/
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/* Public Functions ----------------------------------------------------------- */
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/** @defgroup EXTI_Public_Functions EXTI Public Functions
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* @{
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*/
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void EXTI_Init(void);
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void EXTI_DeInit(void);
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void EXTI_Config(EXTI_InitTypeDef *EXTICfg);
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void EXTI_SetMode(EXTI_LINE_ENUM EXTILine, EXTI_MODE_ENUM mode);
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void EXTI_SetPolarity(EXTI_LINE_ENUM EXTILine, EXTI_POLARITY_ENUM polarity);
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void EXTI_ClearEXTIFlag(EXTI_LINE_ENUM EXTILine);
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/**
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* @}
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* LPC17XX_EXTI_H_ */
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/**
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* @}
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*/
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/* --------------------------------- End Of File ------------------------------ */
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