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/***********************************************************************//**
* @file lpc17xx_exti.h
* @brief Contains all macro definitions and function prototypes
* support for External interrupt firmware library on LPC17xx
* @version 2.0
* @date 21. May. 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 EXTI EXTI
* @ingroup LPC1700CMSIS_FwLib_Drivers
* @{
*/
#ifndef LPC17XX_EXTI_H_
#define LPC17XX_EXTI_H_
/* Includes ------------------------------------------------------------------- */
#include "LPC17xx.h"
#include "lpc_types.h"
#ifdef __cplusplus
extern "C"
{
#endif
/* Private Macros ------------------------------------------------------------- */
/** @defgroup EXTI_Private_Macros EXTI Private Macros
* @{
*/
/*********************************************************************//**
* Macro defines for EXTI control register
**********************************************************************/
#define EXTI_EINT0_BIT_MARK 0x01
#define EXTI_EINT1_BIT_MARK 0x02
#define EXTI_EINT2_BIT_MARK 0x04
#define EXTI_EINT3_BIT_MARK 0x08
/**
* @}
*/
/* Private Macros ------------------------------------------------------------- */
/** @defgroup EXTI_Public_Types EXTI Public Types
* @{
*/
/**
* @brief EXTI external interrupt line option
*/
typedef enum
{
EXTI_EINT0, /*!< External interrupt 0, P2.10 */
EXTI_EINT1, /*!< External interrupt 0, P2.11 */
EXTI_EINT2, /*!< External interrupt 0, P2.12 */
EXTI_EINT3 /*!< External interrupt 0, P2.13 */
} EXTI_LINE_ENUM;
/**
* @brief EXTI mode option
*/
typedef enum
{
EXTI_MODE_LEVEL_SENSITIVE, /*!< Level sensitivity is selected */
EXTI_MODE_EDGE_SENSITIVE /*!< Edge sensitivity is selected */
} EXTI_MODE_ENUM;
/**
* @brief EXTI polarity option
*/
typedef enum
{
EXTI_POLARITY_LOW_ACTIVE_OR_FALLING_EDGE, /*!< Low active or falling edge sensitive
depending on pin mode */
EXTI_POLARITY_HIGH_ACTIVE_OR_RISING_EDGE /*!< High active or rising edge sensitive
depending on pin mode */
} EXTI_POLARITY_ENUM;
/**
* @brief EXTI Initialize structure
*/
typedef struct
{
EXTI_LINE_ENUM EXTI_Line; /*!<Select external interrupt pin (EINT0, EINT1, EINT 2, EINT3) */
EXTI_MODE_ENUM EXTI_Mode; /*!< Choose between Level-sensitivity or Edge sensitivity */
EXTI_POLARITY_ENUM EXTI_polarity; /*!< If EXTI mode is level-sensitive: this element use to select low or high active level
if EXTI mode is polarity-sensitive: this element use to select falling or rising edge */
}EXTI_InitTypeDef;
/**
* @}
*/
/* Public Functions ----------------------------------------------------------- */
/** @defgroup EXTI_Public_Functions EXTI Public Functions
* @{
*/
void EXTI_Init(void);
void EXTI_DeInit(void);
void EXTI_Config(EXTI_InitTypeDef *EXTICfg);
void EXTI_SetMode(EXTI_LINE_ENUM EXTILine, EXTI_MODE_ENUM mode);
void EXTI_SetPolarity(EXTI_LINE_ENUM EXTILine, EXTI_POLARITY_ENUM polarity);
void EXTI_ClearEXTIFlag(EXTI_LINE_ENUM EXTILine);
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* LPC17XX_EXTI_H_ */
/**
* @}
*/
/* --------------------------------- End Of File ------------------------------ */
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