intc.c File Reference

INTC software driver for AVR UC3 devices.

Copyright (c) 2009-2018 Microchip Technology Inc. and its subsidiaries.

#include <avr32/io.h>
#include "compiler.h"
#include "preprocessor.h"
#include "intc.h"

Macros
#define	DECL_INT_LINE_HANDLER_TABLE(GRP, unused)
	Table of interrupt line handlers per interrupt group in order to optimize RAM space. Each line handler table contains a set of pointers to interrupt handlers. More...
#define	INSERT_INT_LINE_HANDLER_TABLE(GRP, unused)   {AVR32_INTC_NUM_IRQS_PER_GRP##GRP, _int_line_handler_table_##GRP},
#define	IPR_INT0
	Values to store in the interrupt priority registers for the various interrupt priority levels. More...
#define	IPR_INT1
#define	IPR_INT2
#define	IPR_INT3

Functions
__int_handler	_get_interrupt_handler (uint32_t int_level)
	Gets the interrupt handler of the current event at the int_level interrupt priority level (called from exception.S). More...
static void	_unhandled_interrupt (void)
	Default interrupt handler. More...
static __inline__ void	INTC_init_evba (void)
	Init EVBA address. This operation may or may not have been done by the C startup process. More...
void	INTC_init_interrupts (void)
	Initializes the hardware interrupt controller driver. More...
void	INTC_register_interrupt (__int_handler handler, uint32_t irq, uint32_t int_level)
	Registers an interrupt handler. More...
	MREPEAT (AVR32_INTC_NUM_INT_GRPS, DECL_INT_LINE_HANDLER_TABLE,~)

Variables
void	_evba
	Import the _evba symbol from exception.S. More...
void	_int0
	Import the symbols _int0, _int1, _int2, _int3 defined in exception.S. More...
void	_int1
void	_int2
void	_int3
struct {
volatile __int_handler *   _int_line_handler_table
unsigned int   num_irqs
}	_int_handler_table [AVR32_INTC_NUM_INT_GRPS]
	Table containing for each interrupt group the number of interrupt request lines and a pointer to the table of interrupt line handlers. More...

#define DECL_INT_LINE_HANDLER_TABLE	(		GRP,
			unused
	)

Value:

static volatile __int_handler \
    _int_line_handler_table_##GRP[Max(AVR32_INTC_NUM_IRQS_PER_GRP##GRP, 1)];

Table of interrupt line handlers per interrupt group in order to optimize RAM space. Each line handler table contains a set of pointers to interrupt handlers.

#define INSERT_INT_LINE_HANDLER_TABLE	(		GRP,
			unused
	)		{AVR32_INTC_NUM_IRQS_PER_GRP##GRP, _int_line_handler_table_##GRP},

#define IPR_INT0

Value:

((AVR32_INTC_INT0 << AVR32_INTC_IPR_INTLEVEL_OFFSET) \
            | ((int)&_int0 - (int)&_evba))

Values to store in the interrupt priority registers for the various interrupt priority levels.

Referenced by INTC_init_interrupts(), and INTC_register_interrupt().

#define IPR_INT1

Value:

((AVR32_INTC_INT1 << AVR32_INTC_IPR_INTLEVEL_OFFSET) \
            | ((int)&_int1 - (int)&_evba))

Referenced by INTC_register_interrupt().

#define IPR_INT2

Value:

((AVR32_INTC_INT2 << AVR32_INTC_IPR_INTLEVEL_OFFSET) \
            | ((int)&_int2 - (int)&_evba))

Referenced by INTC_register_interrupt().

#define IPR_INT3

Value:

((AVR32_INTC_INT3 << AVR32_INTC_IPR_INTLEVEL_OFFSET) \
            | ((int)&_int3 - (int)&_evba))

Referenced by INTC_register_interrupt().

__int_handler _get_interrupt_handler

(

uint32_t

int_level

)

Gets the interrupt handler of the current event at the int_level interrupt priority level (called from exception.S).

Parameters

int_level

Interrupt priority level to handle.

Returns

Interrupt handler to execute.

References _int_handler_table, and clz.

static void _unhandled_interrupt ( void  )

static

Default interrupt handler.

Referenced by INTC_init_interrupts().

static __inline__ void INTC_init_evba ( void  )

static

Init EVBA address. This operation may or may not have been done by the C startup process.

References _evba, and Set_system_register.

Referenced by INTC_init_interrupts().

MREPEAT	(	AVR32_INTC_NUM_INT_GRPS	,
		DECL_INT_LINE_HANDLER_TABLE	,
		~
	)

Referenced by at45dbx_resources_init().

void _evba

Import the _evba symbol from exception.S.

Referenced by init_exceptions(), and INTC_init_evba().

void _int0

Import the symbols _int0, _int1, _int2, _int3 defined in exception.S.

void _int1

void _int2

void _int3

struct { ... } _int_handler_table[AVR32_INTC_NUM_INT_GRPS]

Initial value:

=
{
#define INSERT_INT_LINE_HANDLER_TABLE(GRP, unused) 



}

Table containing for each interrupt group the number of interrupt request lines and a pointer to the table of interrupt line handlers.

Referenced by _get_interrupt_handler(), INTC_init_interrupts(), and INTC_register_interrupt().

volatile __int_handler* _int_line_handler_table

unsigned int num_irqs