75 lines
2.6 KiB
C
75 lines
2.6 KiB
C
/******************************************************************************
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* The MIT License
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*
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* Copyright (c) 2010 Perry Hung.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*****************************************************************************/
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/**
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* @file exti.h
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* @brief External interrupt control prototypes and defines
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*/
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/* See notes/exti.txt for more info */
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#include "libmaple.h"
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#include "gpio.h"
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#ifndef _EXTI_H_
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#define _EXTI_H_
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#ifdef __cplusplus
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extern "C"{
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#endif
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/** EXTI register map type */
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typedef struct exti_reg_map {
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__IO uint32 IMR; /**< Interrupt mask register */
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__IO uint32 EMR; /**< Event mask register */
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__IO uint32 RTSR; /**< Rising trigger selection register */
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__IO uint32 FTSR; /**< Falling trigger selection register */
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__IO uint32 SWIER; /**< Software interrupt event register */
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__IO uint32 PR; /**< Pending register */
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} exti_reg_map;
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/** EXTI register map base pointer */
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#define EXTI_BASE ((struct exti_reg_map*)0x40013C00)
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/** External interrupt trigger mode */
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typedef enum exti_trigger_mode {
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EXTI_RISING, /**< Trigger on the rising edge */
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EXTI_FALLING, /**< Trigger on the falling edge */
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EXTI_RISING_FALLING /**< Trigger on both the rising and falling edges */
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} exti_trigger_mode;
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void exti_attach_interrupt(afio_exti_num num,
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afio_exti_port port,
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voidFuncPtr handler,
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exti_trigger_mode mode);
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void exti_detach_interrupt(afio_exti_num num);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif
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