extint.h File Reference

SAM External Interrupt Driver.

Copyright (c) 2012-2020 Microchip Technology Inc. and its subsidiaries.

#include <compiler.h>
#include <pinmux.h>
#include "extint_callback.h"

Data Structures
struct	extint_chan_conf
	External Interrupt Controller channel configuration structure. More...
struct	extint_events
	External Interrupt event enable/disable structure. More...
struct	extint_nmi_conf
	External Interrupt Controller NMI configuration structure. More...

Macros
#define	EIC_NUMBER_OF_INTERRUPTS   16
#define	EXTINT_CLK_GCLK   0
	The EIC is clocked by GCLK_EIC. More...
#define	EXTINT_CLK_ULP32K   1
	The EIC is clocked by CLK_ULP32K. More...

Typedefs
typedef void(*	extint_callback_t )(void)
	Type definition for an EXTINT module callback function. More...

Enumerations
enum	extint_detect {   EXTINT_DETECT_NONE = 0,   EXTINT_DETECT_RISING = 1,   EXTINT_DETECT_FALLING = 2,   EXTINT_DETECT_BOTH = 3,   EXTINT_DETECT_HIGH = 4,   EXTINT_DETECT_LOW = 5 }
	External interrupt edge detection configuration enum. More...
enum	extint_pull {   EXTINT_PULL_UP = SYSTEM_PINMUX_PIN_PULL_UP,   EXTINT_PULL_DOWN = SYSTEM_PINMUX_PIN_PULL_DOWN,   EXTINT_PULL_NONE = SYSTEM_PINMUX_PIN_PULL_NONE }
	External interrupt internal pull configuration enum. More...

Functions
Event Management
void	extint_enable_events (struct extint_events *const events)
	Enables an External Interrupt event output. More...
void	extint_disable_events (struct extint_events *const events)
	Disables an External Interrupt event output. More...
Configuration and Initialization (Channel)
void	extint_chan_get_config_defaults (struct extint_chan_conf *const config)
	Initializes an External Interrupt channel configuration structure to defaults. More...
void	extint_chan_set_config (const uint8_t channel, const struct extint_chan_conf *const config)
	Writes an External Interrupt channel configuration to the hardware module. More...
Configuration and Initialization (NMI)
static void	extint_nmi_get_config_defaults (struct extint_nmi_conf *const config)
	Initializes an External Interrupt NMI channel configuration structure to defaults. More...
enum status_code	extint_nmi_set_config (const uint8_t nmi_channel, const struct extint_nmi_conf *const config)
	Writes an External Interrupt NMI channel configuration to the hardware module. More...
Detection testing and clearing (channel)
static bool	extint_chan_is_detected (const uint8_t channel)
	Retrieves the edge detection state of a configured channel. More...
static void	extint_chan_clear_detected (const uint8_t channel)
	Clears the edge detection state of a configured channel. More...
Detection Testing and Clearing (NMI)
static bool	extint_nmi_is_detected (const uint8_t nmi_channel)
	Retrieves the edge detection state of a configured NMI channel. More...
static void	extint_nmi_clear_detected (const uint8_t nmi_channel)
	Clears the edge detection state of a configured NMI channel. More...