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/******************************************************************************
* The MIT License
*
* Copyright (c) 2010 Perry Hung.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*****************************************************************************/
/**
* @file exti.h
* @brief External interrupt control prototypes and defines
*/
/* See notes/exti.txt for more info */
#include "libmaple.h"
#include "gpio.h"
#ifndef _EXTI_H_
#define _EXTI_H_
#ifdef __cplusplus
extern "C"{
#endif
/** EXTI register map type */
typedef struct exti_reg_map {
__io uint32 IMR; /**< Interrupt mask register */
__io uint32 EMR; /**< Event mask register */
__io uint32 RTSR; /**< Rising trigger selection register */
__io uint32 FTSR; /**< Falling trigger selection register */
__io uint32 SWIER; /**< Software interrupt event register */
__io uint32 PR; /**< Pending register */
} exti_reg_map;
/** EXTI register map base pointer */
#define EXTI_BASE ((struct exti_reg_map*)0x40010400)
/** External interrupt trigger mode */
typedef enum exti_trigger_mode {
EXTI_RISING, /**< Trigger on the rising edge */
EXTI_FALLING, /**< Trigger on the falling edge */
EXTI_RISING_FALLING /**< Trigger on both the rising and falling edges */
} exti_trigger_mode;
void exti_attach_interrupt(afio_exti_num num,
afio_exti_port port,
voidFuncPtr handler,
exti_trigger_mode mode);
void exti_detach_interrupt(afio_exti_num num);
#ifdef __cplusplus
} // extern "C"
#endif
#endif
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