text: /*This file is prepared for Doxygen automatic documentation generation.*/
  /*! \file *********************************************************************
   *
   * \brief INTC driver for AVR32 UC3.
   *
   * AVR32 Interrupt Controller driver module.
   *
   * - Compiler:           IAR EWAVR32 and GNU GCC for AVR32
   * - Supported devices:  All AVR32 devices with an INTC module can be used.
   * - AppNote:
   *
   * \author               Atmel Corporation: http://www.atmel.com \n
   *                       Support and FAQ: http://support.atmel.no/
   *
   ******************************************************************************/
  
  /* Copyright (c) 2009 Atmel Corporation. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   * list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   * this list of conditions and the following disclaimer in the documentation
   * and/or other materials provided with the distribution.
   *
   * 3. The name of Atmel may not be used to endorse or promote products derived
   * from this software without specific prior written permission.
   *
   * 4. This software may only be redistributed and used in connection with an Atmel
   * AVR product.
   *
   * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
   * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
   *
   */
  
  #ifndef _INTC_H_
  #define _INTC_H_
  
  #include "compiler.h"
  
  
  //! Maximal number of interrupt request lines per group.
  #define AVR32_INTC_MAX_NUM_IRQS_PER_GRP             32
  
  //! Number of interrupt priority levels.
  #define AVR32_INTC_NUM_INT_LEVELS                   (1 << AVR32_INTC_IPR_INTLEVEL_SIZE)
  
  
  #ifdef __AVR32_ABI_COMPILER__ // Automatically defined when compiling for AVR32, not when assembling.
  
  //! Pointer to interrupt handler.
  #if (defined __GNUC__)
  typedef void (*__int_handler)(void);
  #elif (defined __ICCAVR32__)
  typedef void (__interrupt *__int_handler)(void);
  #endif
  
  
  /*! \brief Initializes the hardware interrupt controller driver.
   *
   * \note Taken and adapted from Newlib.
   */
  extern void INTC_init_interrupts(void);
  
  /*! \brief Registers an interrupt handler.
   *
   * \param handler   Interrupt handler to register.
   * \param irq       IRQ of the interrupt handler to register.
   * \param int_level Interrupt priority level to assign to the group of this IRQ.
   *
   * \warning The interrupt handler must manage the `rete' instruction, what can
   *          be done thanks to pure assembly, inline assembly or the
   *          `__attribute__((__interrupt__))' C function attribute.
   *
   * \warning If several interrupt handlers of a same group are registered with
   *          different priority levels, only the latest priority level set will
   *          be effective.
   *
   * \note Taken and adapted from Newlib.
   */
  extern void INTC_register_interrupt(__int_handler handler, unsigned int irq, unsigned int int_level);
  
  #endif  // __AVR32_ABI_COMPILER__
  
  
  #endif  // _INTC_H_
  