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https://github.com/RIOT-OS/RIOT.git
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f0b0db8f06
- fixed group naming scheme to 'drivers_xx' - introduced a group for actuators (analog to the sensors) - added missing doxygen to ltc4150 driver
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
/*
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* Copyright 2009, Freie Universitaet Berlin (FUB). All rights reserved.
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @defgroup drivers_gpioint GPIO IRQ Multiplexer
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* @ingroup drivers
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* @brief Provides an API to implement interrupt handlers on IO pins.
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*
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* Multiplexer and interrupt handling must be implemented platform specific.
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*
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* @{
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*
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* @file
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* @brief GPIO IRQ Multiplexer interface
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*
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* @author Michael Baar <michael.baar@fu-berlin.de>
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*/
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#ifndef GPIOINT_H_
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#define GPIOINT_H_
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* @brief GPIO IRQ multiplexer flags
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*
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* @note We rely on the exact values for the edges.
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* @note These flags are extended in hal/drivers/device-gpio.h
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*
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* @{
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*/
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#define GPIOINT_DISABLE 0x00 /**< disable interrupt */
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#define GPIOINT_RISING_EDGE 0x01 /**< interrupt is generated on rising edge */
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#define GPIOINT_FALLING_EDGE 0x02 /**< interrupt is generated on falling edge */
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#define GPIOINT_DEBOUNCE 0x04 /**< debounce this interrupt */
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/** @} */
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/**
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* @brief GPIO IRQ callback function type
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*/
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typedef void(*fp_irqcb)(void);
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/**
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* @brief GPIO IRQ handler setup
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* @param[in] port CPU specific port number (starting at 0)
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* @param[in] bitmask One or more bits for which to set the handler
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* @param[in] flags A combination of #GPIOINT_RISING_EDGE and #GPIOINT_FALLING_EDGE
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* @param[in] callback A pointer to a handler function
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* @retval true successful
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* @retval false failed
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*
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* To enable interrupt handling for a pin flags and callback must be non-zero. To disable interrupt
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* handling flags and callback shall be zero.
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*/
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bool gpioint_set(int port, uint32_t bitmask, int flags, fp_irqcb callback);
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/**
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* @brief Initialize the multiplexer
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*/
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void gpioint_init(void);
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#ifdef __cplusplus
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}
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#endif
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/** @} */
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#endif /* GPIOINT_H_ */
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