sercom_interrupt.c File Reference

SAM Serial Peripheral Interface Driver.

Copyright (c) 2012-2018 Microchip Technology Inc. and its subsidiaries.

#include "sercom_interrupt.h"

Macros
#define	_SERCOM_INTERRUPT_HANDLER(n, unused)
#define	_SERCOM_INTERRUPT_VECT_NUM(n, unused)   SYSTEM_INTERRUPT_MODULE_SERCOM##n,

Functions
static void	_sercom_default_handler (const uint8_t instance)
enum system_interrupt_vector	_sercom_get_interrupt_vector (Sercom *const sercom_instance)
void	_sercom_set_handler (const uint8_t instance, const sercom_handler_t interrupt_handler)

Variables
static bool	_handler_table_initialized = false
	Save status of initialized handlers. More...
void *	_sercom_instances [SERCOM_INST_NUM]
static void(*	_sercom_interrupt_handlers [SERCOM_INST_NUM])(const uint8_t instance)
	Void pointers for saving device instance structures. More...

#define _SERCOM_INTERRUPT_HANDLER	(		n,
			unused
	)

Value:

void SERCOM##n##_Handler(void) \
        { \
			_sercom_interrupt_handlers[n](n); \
        }

Generates a SERCOM interrupt handler function for a given SERCOM index.

#define _SERCOM_INTERRUPT_VECT_NUM	(		n,
			unused
	)		SYSTEM_INTERRUPT_MODULE_SERCOM##n,

Converts a given SERCOM index to its interrupt vector index.

Referenced by _sercom_get_interrupt_vector().

static void _sercom_default_handler ( const uint8_t  instance )

static

Default interrupt handler.

Parameters

[in]

instance

SERCOM instance used.

References Assert.

Referenced by _sercom_set_handler().

enum system_interrupt_vector _sercom_get_interrupt_vector

(

Sercom *const

sercom_instance

)

Returns the system interrupt vector.

Parameters

[in]

sercom_instance

Instance pointer

Returns

Enum of system interrupt vector

Return values

SYSTEM_INTERRUPT_MODULE_SERCOM0
SYSTEM_INTERRUPT_MODULE_SERCOM1
SYSTEM_INTERRUPT_MODULE_SERCOM2
SYSTEM_INTERRUPT_MODULE_SERCOM3
SYSTEM_INTERRUPT_MODULE_SERCOM4
SYSTEM_INTERRUPT_MODULE_SERCOM5
SYSTEM_INTERRUPT_MODULE_SERCOM6
SYSTEM_INTERRUPT_MODULE_SERCOM7

References _sercom_get_sercom_inst_index(), _SERCOM_INTERRUPT_VECT_NUM, and MREPEAT.

Referenced by spi_disable(), spi_enable(), usart_disable(), and usart_enable().

void _sercom_set_handler	(	const uint8_t	instance,
		const sercom_handler_t	interrupt_handler
	)

Saves the given callback handler.

Parameters

[in]	instance	Instance index.
[in]	interrupt_handler	Pointer to instance callback handler.

References _handler_table_initialized, _sercom_default_handler(), _sercom_instances, _sercom_interrupt_handlers, and NULL.

Referenced by spi_init(), and usart_init().

bool _handler_table_initialized = false

static

Save status of initialized handlers.

Referenced by _sercom_set_handler().

void* _sercom_instances[SERCOM_INST_NUM]

Referenced by _sercom_set_handler(), _spi_interrupt_handler(), _usart_interrupt_handler(), spi_init(), and usart_init().

void(* _sercom_interrupt_handlers[SERCOM_INST_NUM])(const uint8_t instance)

static

Void pointers for saving device instance structures.

Referenced by _sercom_set_handler().