interrupt_example_iar.c

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/*
  NOTE:
    To get this example to work on your stk1000, connect J6 to J15 and J3 to
    J25. You can then press the switches to generate an interrupt. The
    corresponding led will be lit to indicate that the interrupt has triggered.

    This appnote uses the PIO controller. The settings and configuration of the
    PIO controller is not a part of this appnote. Please read the appnote "Using
    the AVR32 pio controller" for further information.
*/

#include <avr32/ioap7000.h>
#include <intrinsics.h>

#define SUCCESS 0;
#define ERROR  -1;

#define INPUT_MASK 0x000000ff
#define OUTPUT_MASK 0x0000ff00

#pragma handler=AVR32_PIOC_IRQ_GROUP,2
__interrupt __root void pioc_interrupt_handler()
{
  volatile struct avr32_pio_t *pioc = &AVR32_PIOC;
  int status;

  status = pioc->isr;
  status = pioc->pdsr;
  pioc->odsr =~(status&INPUT_MASK)<<8; /* set led */
}

int main( void )
{
  volatile struct avr32_pio_t *pioc = &AVR32_PIOC;

  /*
  Setup the PIO controller. Set PIOC[8..15] as output, PIOC[0..7] as input.
  */

  pioc->oer = OUTPUT_MASK;
  pioc->odr= INPUT_MASK;
  pioc->per = OUTPUT_MASK&INPUT_MASK;
  pioc->codr = INPUT_MASK & OUTPUT_MASK;
  pioc->puer = INPUT_MASK & OUTPUT_MASK;

  pioc->idr &= ~INPUT_MASK;
  pioc->ier = INPUT_MASK;
  pioc->ower = OUTPUT_MASK;

  __enable_interrupt();

  while(1);

}

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