Extern Interrupt

Data Structures
struct	avr_extint_t
	This module is just a "relay" for the pin change IRQ in the IO port module. More...

Macros
#define	AVR_IOCTL_EXTINT_GETIRQ()   AVR_IOCTL_DEF('i','n','t',' ')
	Get the internal IRQ corresponding to the INT. More...
#define	AVR_EXTINT_DECLARE(_index, _portname, _portpin)
	Declares a typical INT into a avr_extint_t in a core. More...
#define	AVR_ASYNC_EXTINT_DECLARE(_index, _portname, _portpin)
	Asynchronous External Interrupt, for example INT2 on the m16 and m32 Uses only 1 interrupt sense control bit. More...
#define	AVR_EXTINT_MEGA_DECLARE(_index, _portname, _portpin, _EICR)
#define	AVR_EXTINT_TINY_DECLARE(_index, _portname, _portpin, _IFR)

Typedefs
typedef struct avr_extint_t	avr_extint_t
	This module is just a "relay" for the pin change IRQ in the IO port module. More...

Enumerations
enum	{   EXTINT_IRQ_OUT_INT0 = 0, EXTINT_IRQ_OUT_INT1, EXTINT_IRQ_OUT_INT2, EXTINT_IRQ_OUT_INT3,   EXTINT_IRQ_OUT_INT4, EXTINT_IRQ_OUT_INT5, EXTINT_IRQ_OUT_INT6, EXTINT_IRQ_OUT_INT7,   EXTINT_COUNT }

Functions
void	avr_extint_init (avr_t *avr, avr_extint_t *p)

Detailed Description

Macro Definition Documentation

#define AVR_ASYNC_EXTINT_DECLARE	(		_index,
			_portname,
			_portpin
	)

Value:

.eint[_index] = {                       \
    .port_ioctl = AVR_IOCTL_IOPORT_GETIRQ(_portname),       \
    .port_pin = _portpin,                   \
    .isc = { AVR_IO_REGBIT(MCUCSR, ISC##_index) },      \
    .vector = {                         \
      .enable = AVR_IO_REGBIT(GICR, INT##_index),       \
      .raised = AVR_IO_REGBIT(GIFR, INTF##_index),      \
      .vector = INT##_index##_vect,             \
    },                              \
  }

Asynchronous External Interrupt, for example INT2 on the m16 and m32 Uses only 1 interrupt sense control bit.

#define AVR_EXTINT_DECLARE	(		_index,
			_portname,
			_portpin
	)

Value:

.eint[_index] = {                           \
    .port_ioctl = AVR_IOCTL_IOPORT_GETIRQ(_portname),           \
    .port_pin = _portpin,                       \
    .isc = { AVR_IO_REGBIT(EICRA, ISC##_index##0), AVR_IO_REGBIT(EICRA, ISC##_index##1) }, \
    .vector = {                             \
      .enable = AVR_IO_REGBIT(EIMSK, INT##_index),          \
      .raised = AVR_IO_REGBIT(EIFR, INTF##_index),          \
      .vector = INT##_index##_vect,                 \
    },                                  \
  }

Declares a typical INT into a avr_extint_t in a core.

this is a shortcut since INT declarations are pretty standard. The Tinies as well as the atmega1280 are slightly different. See sim_tinyx5.h and sim_mega1280.h

#define AVR_EXTINT_MEGA_DECLARE	(		_index,
			_portname,
			_portpin,
			_EICR
	)

Value:

.eint[_index] = {                           \
    .port_ioctl = AVR_IOCTL_IOPORT_GETIRQ(_portname),           \
    .port_pin = _portpin,                       \
    .isc = { AVR_IO_REGBIT(EICR##_EICR, ISC##_index##0), AVR_IO_REGBIT(EICR##_EICR, ISC##_index##1) }, \
    .vector = {                             \
      .enable = AVR_IO_REGBIT(EIMSK, INT##_index),          \
      .raised = AVR_IO_REGBIT(EIFR, INTF##_index),          \
      .vector = INT##_index##_vect,                 \
    },                                  \
  }

#define AVR_EXTINT_TINY_DECLARE	(		_index,
			_portname,
			_portpin,
			_IFR
	)

Value:

.eint[_index] = {                           \
    .port_ioctl = AVR_IOCTL_IOPORT_GETIRQ(_portname),           \
    .port_pin = _portpin,                       \
    .isc = { AVR_IO_REGBIT(MCUCR, ISC##_index##0), AVR_IO_REGBIT(MCUCR, ISC##_index##1) }, \
    .vector = {                             \
      .enable = AVR_IO_REGBIT(GIMSK, INT##_index),          \
      .raised = AVR_IO_REGBIT(_IFR, INTF##_index),          \
      .vector = INT##_index##_vect,                 \
    },                                  \
  }

#define AVR_IOCTL_EXTINT_GETIRQ

(

)

AVR_IOCTL_DEF('i','n','t',' ')

Get the internal IRQ corresponding to the INT.

Typedef Documentation

typedef struct avr_extint_t avr_extint_t

This module is just a "relay" for the pin change IRQ in the IO port module.

We hook up to their IRQ and raise out interrupt vectors as needed

"isc" is handled, apart from the "level" mode that doesn't make sense here (?)

Enumeration Type Documentation

anonymous enum

Enumerator
EXTINT_IRQ_OUT_INT0
EXTINT_IRQ_OUT_INT1
EXTINT_IRQ_OUT_INT2
EXTINT_IRQ_OUT_INT3
EXTINT_IRQ_OUT_INT4
EXTINT_IRQ_OUT_INT5
EXTINT_IRQ_OUT_INT6
EXTINT_IRQ_OUT_INT7
EXTINT_COUNT

Function Documentation

void avr_extint_init	(	avr_t *	avr,
		avr_extint_t *	p
	)

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