Externer Interrupt Controller beim UC3C0512

__attribute__((__interrupt__)) static void int4_handler(void)

{

   printf("Pressed IGR\r\n");

   eic_clear_interrupt_line(&AVR32_EIC, EXT_INT4);

}

void InitInterrupts(void)

{

   static const eic_options_t eic_options =

   {

   // Enable edge-triggered interrupt.

         .eic_mode = EIC_MODE_EDGE_TRIGGERED,

         // Interrupt will trigger on falling edge.

         .eic_edge = EIC_EDGE_FALLING_EDGE,

         // Initialize in synchronous mode : interrupt is synchronized to the clock

         .eic_async = EIC_ASYNCH_MODE,

         // Set the interrupt line number.

         .eic_line = EXT_INT4,

         // Enable filter.

         .eic_filter = EIC_FILTER_DISABLED, };

   static const gpio_map_t EIC_GPIO_MAP =

   {

   { AVR32_EIC_EXTINT_4_2_PIN, AVR32_EIC_EXTINT_4_2_FUNCTION }, };

   gpio_enable_module(EIC_GPIO_MAP,

         sizeof(EIC_GPIO_MAP) / sizeof(EIC_GPIO_MAP[0]));

  // gpio_enable_pin_interrupt(AVR32_EIC_EXTINT_4_2_PIN, GPIO_FALLING_EDGE);

   INTC_register_interrupt(&int4_handler, AVR32_EIC_IRQ_4, AVR32_INTC_INT0);

   eic_init(&AVR32_EIC, &eic_options, 1);

   eic_enable_lines(&AVR32_EIC, (1 << eic_options.eic_line));

   eic_enable_interrupt_lines(&AVR32_EIC, (1 << eic_options.eic_line));

   for (int i = 0; i < 9; ++i)

   {

      printf("Is Line %u enabled %u\r\n", i,

            eic_is_line_enabled(&AVR32_EIC, i));

      printf("Is Line Interrupt %u enabled %u \r\n", i,

            eic_is_interrupt_line_enabled(&AVR32_EIC, i));

   }

}