text: /*This file is prepared for Doxygen automatic documentation generation.*/
  /*! \file *********************************************************************
   *
   * \brief FLASHC driver for AVR32 UC3.
   *
   * AVR32 Flash Controller driver module.
   *
   * - Compiler:           IAR EWAVR32 and GNU GCC for AVR32
   * - Supported devices:  All AVR32 devices with a FLASHC 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 _FLASHC_H_
  #define _FLASHC_H_
  
  #include <avr32/io.h>
  #include <stddef.h>
  #include "compiler.h"
  
  //! Number of flash regions defined by the FLASHC.
  #define AVR32_FLASHC_REGIONS  (AVR32_FLASHC_FLASH_SIZE /\
                                 (AVR32_FLASHC_PAGES_PR_REGION * AVR32_FLASHC_PAGE_SIZE))
  
  
  /*! \name Flash Properties
   */
  //! @{
  
  /*! \brief Gets the size of the whole flash array.
   *
   * \return The size of the whole flash array in bytes.
   */
  extern unsigned int flashc_get_flash_size(void);
  
  /*! \brief Gets the total number of pages in the flash array.
   *
   * \return The total number of pages in the flash array.
   */
  extern unsigned int flashc_get_page_count(void);
  
  /*! \brief Gets the number of pages in each flash region.
   *
   * \return The number of pages in each flash region.
   */
  extern unsigned int flashc_get_page_count_per_region(void);
  
  /*! \brief Gets the region number of a page.
   *
   * \param page_number The page number:
   *   \arg \c 0 to <tt>(flashc_get_page_count() - 1)</tt>: a page number within
   *        the flash array;
   *   \arg <tt>< 0</tt>: the current page number.
   *
   * \return The region number of the specified page.
   */
  extern unsigned int flashc_get_page_region(int page_number);
  
  /*! \brief Gets the number of the first page of a region.
   *
   * \param region The region number: \c 0 to <tt>(AVR32_FLASHC_REGIONS - 1)</tt>.
   *
   * \return The number of the first page of the specified region.
   */
  extern unsigned int flashc_get_region_first_page_number(unsigned int region);
  
  //! @}
  
  
  /*! \name FLASHC Control
   */
  //! @{
  
  /*! \brief Gets the number of wait states of flash read accesses.
   *
   * \return The number of wait states of flash read accesses.
   */
  extern unsigned int flashc_get_wait_state(void);
  
  /*! \brief Sets the number of wait states of flash read accesses.
   *
   * \param wait_state The number of wait states of flash read accesses: \c 0 to
   *                   \c 1.
   */
  extern void flashc_set_wait_state(unsigned int wait_state);
  
  /*! \brief Depending on the CPU frequency, set the wait states of flash read
   *         accesses.
   *
   * \param cpu_f_hz The CPU frequency
   */
  extern void flashc_set_bus_freq(unsigned int cpu_f_hz);
  /*! \brief Alias on the flashc_set_bus_freq() function.
   *
   * \param cpu_f_hz The CPU frequency
   */
  #define flash_set_bus_freq(cpu_f_hz) flashc_set_bus_freq(cpu_f_hz)
  
  /*! \brief Tells whether the Flash Ready interrupt is enabled.
   *
   * \return Whether the Flash Ready interrupt is enabled.
   */
  extern Bool flashc_is_ready_int_enabled(void);
  
  /*! \brief Enables or disables the Flash Ready interrupt.
   *
   * \param enable Whether to enable the Flash Ready interrupt: \c true or
   *               \c false.
   */
  extern void flashc_enable_ready_int(Bool enable);
  
  /*! \brief Tells whether the Lock Error interrupt is enabled.
   *
   * \return Whether the Lock Error interrupt is enabled.
   */
  extern Bool flashc_is_lock_error_int_enabled(void);
  
  /*! \brief Enables or disables the Lock Error interrupt.
   *
   * \param enable Whether to enable the Lock Error interrupt: \c true or
   *               \c false.
   */
  extern void flashc_enable_lock_error_int(Bool enable);
  
  /*! \brief Tells whether the Programming Error interrupt is enabled.
   *
   * \return Whether the Programming Error interrupt is enabled.
   */
  extern Bool flashc_is_prog_error_int_enabled(void);
  
  /*! \brief Enables or disables the Programming Error interrupt.
   *
   * \param enable Whether to enable the Programming Error interrupt: \c true or
   *               \c false.
   */
  extern void flashc_enable_prog_error_int(Bool enable);
  
  //! @}
  
  
  /*! \name FLASHC Status
   */
  //! @{
  
  /*! \brief Tells whether the FLASHC is ready to run a new command.
   *
   * \return Whether the FLASHC is ready to run a new command.
   */
  extern Bool flashc_is_ready(void);
  
  /*! \brief Waits actively until the FLASHC is ready to run a new command.
   *
   * This is the default function assigned to \ref flashc_wait_until_ready.
   */
  extern void flashc_default_wait_until_ready(void);
  
  //! Pointer to the function used by the driver when it needs to wait until the
  //! FLASHC is ready to run a new command.
  //! The default function is \ref flashc_default_wait_until_ready.
  //! The user may change this pointer to use another implementation.
  extern void (*volatile flashc_wait_until_ready)(void);
  
  /*! \brief Tells whether a Lock Error has occurred during the last function
   *         called that issued one or more FLASHC commands.
   *
   * \return Whether a Lock Error has occurred during the last function called
   *         that issued one or more FLASHC commands.
   */
  extern Bool flashc_is_lock_error(void);
  
  /*! \brief Tells whether a Programming Error has occurred during the last
   *         function called that issued one or more FLASHC commands.
   *
   * \return Whether a Programming Error has occurred during the last function
   *         called that issued one or more FLASHC commands.
   */
  extern Bool flashc_is_programming_error(void);
  
  //! @}
  
  
  /*! \name FLASHC Command Control
   */
  //! @{
  
  /*! \brief Gets the last issued FLASHC command.
   *
   * \return The last issued FLASHC command.
   */
  extern unsigned int flashc_get_command(void);
  
  /*! \brief Gets the current FLASHC page number.
   *
   * \return The current FLASHC page number.
   */
  extern unsigned int flashc_get_page_number(void);
  
  /*! \brief Issues a FLASHC command.
   *
   * \param command The command: \c AVR32_FLASHC_FCMD_CMD_x.
   * \param page_number The page number to apply the command to:
   *   \arg \c 0 to <tt>(flashc_get_page_count() - 1)</tt>: a page number within
   *        the flash array;
   *   \arg <tt>< 0</tt>: use this to apply the command to the current page number
   *        or if the command does not apply to any page number;
   *   \arg this argument may have other meanings according to the command. See
   *        the FLASHC chapter of the MCU datasheet.
   *
   * \warning A Lock Error is issued if the command violates the protection
   *          mechanism.
   *
   * \warning A Programming Error is issued if the command is invalid.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern void flashc_issue_command(unsigned int command, int page_number);
  
  //! @}
  
  
  /*! \name FLASHC Global Commands
   */
  //! @{
  
  /*! \brief Issues a No Operation command to the FLASHC.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern void flashc_no_operation(void);
  
  /*! \brief Issues an Erase All command to the FLASHC.
   *
   * This command erases all bits in the flash array, the general-purpose fuse
   * bits and the Security bit. The User page is not erased.
   *
   * This command also ensures that all volatile memories, such as register file
   * and RAMs, are erased before the Security bit is erased, i.e. deactivated.
   *
   * \warning A Lock Error is issued if at least one region is locked or the
   *          bootloader protection is active.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note An erase operation can only set bits.
   */
  extern void flashc_erase_all(void);
  
  //! @}
  
  
  /*! \name FLASHC Protection Mechanisms
   */
  //! @{
  
  /*! \brief Tells whether the Security bit is active.
   *
   * \return Whether the Security bit is active.
   */
  extern Bool flashc_is_security_bit_active(void);
  
  /*! \brief Activates the Security bit.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern void flashc_activate_security_bit(void);
  
  /*! \brief Gets the bootloader protected size.
   *
   * \return The bootloader protected size in bytes.
   */
  extern unsigned int flashc_get_bootloader_protected_size(void);
  
  /*! \brief Sets the bootloader protected size.
   *
   * \param bootprot_size The wanted bootloader protected size in bytes. If this
   *                      size is not supported, the actual size will be the
   *                      nearest greater available size or the maximal possible
   *                      size if the requested size is too large.
   *
   * \return The actual bootloader protected size in bytes.
   *
   * \warning A Lock Error is issued if the Security bit is active.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern unsigned int flashc_set_bootloader_protected_size(unsigned int bootprot_size);
  
  /*! \brief Tells whether external privileged fetch is locked.
   *
   * \return Whether external privileged fetch is locked.
   */
  extern Bool flashc_is_external_privileged_fetch_locked(void);
  
  /*! \brief Locks or unlocks external privileged fetch.
   *
   * \param lock Whether to lock external privileged fetch: \c true or \c false.
   *
   * \warning A Lock Error is issued if the Security bit is active.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern void flashc_lock_external_privileged_fetch(Bool lock);
  
  /*! \brief Tells whether the region of a page is locked.
   *
   * \param page_number The page number:
   *   \arg \c 0 to <tt>(flashc_get_page_count() - 1)</tt>: a page number within
   *        the flash array;
   *   \arg <tt>< 0</tt>: the current page number.
   *
   * \return Whether the region of the specified page is locked.
   */
  extern Bool flashc_is_page_region_locked(int page_number);
  
  /*! \brief Tells whether a region is locked.
   *
   * \param region The region number: \c 0 to <tt>(AVR32_FLASHC_REGIONS - 1)</tt>.
   *
   * \return Whether the specified region is locked.
   */
  extern Bool flashc_is_region_locked(unsigned int region);
  
  /*! \brief Locks or unlocks the region of a page.
   *
   * \param page_number The page number:
   *   \arg \c 0 to <tt>(flashc_get_page_count() - 1)</tt>: a page number within
   *        the flash array;
   *   \arg <tt>< 0</tt>: the current page number.
   * \param lock Whether to lock the region of the specified page: \c true or
   *             \c false.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern void flashc_lock_page_region(int page_number, Bool lock);
  
  /*! \brief Locks or unlocks a region.
   *
   * \param region The region number: \c 0 to <tt>(AVR32_FLASHC_REGIONS - 1)</tt>.
   * \param lock Whether to lock the specified region: \c true or \c false.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern void flashc_lock_region(unsigned int region, Bool lock);
  
  /*! \brief Locks or unlocks all regions.
   *
   * \param lock Whether to lock the regions: \c true or \c false.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern void flashc_lock_all_regions(Bool lock);
  
  //! @}
  
  
  /*! \name Access to General-Purpose Fuses
   */
  //! @{
  
  /*! \brief Reads a general-purpose fuse bit.
   *
   * \param gp_fuse_bit The general-purpose fuse bit: \c 0 to \c 63.
   *
   * \return The value of the specified general-purpose fuse bit.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern Bool flashc_read_gp_fuse_bit(unsigned int gp_fuse_bit);
  
  /*! \brief Reads a general-purpose fuse bit-field.
   *
   * \param pos The bit-position of the general-purpose fuse bit-field: \c 0 to
   *            \c 63.
   * \param width The bit-width of the general-purpose fuse bit-field: \c 0 to
   *              \c 64.
   *
   * \return The value of the specified general-purpose fuse bit-field.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern U64 flashc_read_gp_fuse_bitfield(unsigned int pos, unsigned int width);
  
  /*! \brief Reads a general-purpose fuse byte.
   *
   * \param gp_fuse_byte The general-purpose fuse byte: \c 0 to \c 7.
   *
   * \return The value of the specified general-purpose fuse byte.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern U8 flashc_read_gp_fuse_byte(unsigned int gp_fuse_byte);
  
  /*! \brief Reads all general-purpose fuses.
   *
   * \return The value of all general-purpose fuses as a word.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern U64 flashc_read_all_gp_fuses(void);
  
  /*! \brief Erases a general-purpose fuse bit.
   *
   * \param gp_fuse_bit The general-purpose fuse bit: \c 0 to \c 63.
   * \param check Whether to check erase: \c true or \c false.
   *
   * \return Whether the erase succeeded or always \c true if erase check was not
   *         requested.
   *
   * \warning A Lock Error is issued if the Security bit is active and the command
   *          is applied to BOOTPROT or EPFL fuses.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note An erase operation can only set bits.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern Bool flashc_erase_gp_fuse_bit(unsigned int gp_fuse_bit, Bool check);
  
  /*! \brief Erases a general-purpose fuse bit-field.
   *
   * \param pos The bit-position of the general-purpose fuse bit-field: \c 0 to
   *            \c 63.
   * \param width The bit-width of the general-purpose fuse bit-field: \c 0 to
   *              \c 64.
   * \param check Whether to check erase: \c true or \c false.
   *
   * \return Whether the erase succeeded or always \c true if erase check was not
   *         requested.
   *
   * \warning A Lock Error is issued if the Security bit is active and the command
   *          is applied to BOOTPROT or EPFL fuses.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note An erase operation can only set bits.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern Bool flashc_erase_gp_fuse_bitfield(unsigned int pos, unsigned int width, Bool check);
  
  /*! \brief Erases a general-purpose fuse byte.
   *
   * \param gp_fuse_byte The general-purpose fuse byte: \c 0 to \c 7.
   * \param check Whether to check erase: \c true or \c false.
   *
   * \return Whether the erase succeeded or always \c true if erase check was not
   *         requested.
   *
   * \warning A Lock Error is issued if the Security bit is active.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note An erase operation can only set bits.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern Bool flashc_erase_gp_fuse_byte(unsigned int gp_fuse_byte, Bool check);
  
  /*! \brief Erases all general-purpose fuses.
   *
   * \param check Whether to check erase: \c true or \c false.
   *
   * \return Whether the erase succeeded or always \c true if erase check was not
   *         requested.
   *
   * \warning A Lock Error is issued if the Security bit is active.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note An erase operation can only set bits.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern Bool flashc_erase_all_gp_fuses(Bool check);
  
  /*! \brief Writes a general-purpose fuse bit.
   *
   * \param gp_fuse_bit The general-purpose fuse bit: \c 0 to \c 63.
   * \param value The value of the specified general-purpose fuse bit.
   *
   * \warning A Lock Error is issued if the Security bit is active and the command
   *          is applied to BOOTPROT or EPFL fuses.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note A write operation can only clear bits; in other words, an erase operation 
   *  must first be done if some bits need to be set to 1.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern void flashc_write_gp_fuse_bit(unsigned int gp_fuse_bit, Bool value);
  
  /*! \brief Writes a general-purpose fuse bit-field.
   *
   * \param pos The bit-position of the general-purpose fuse bit-field: \c 0 to
   *            \c 63.
   * \param width The bit-width of the general-purpose fuse bit-field: \c 0 to
   *              \c 64.
   * \param value The value of the specified general-purpose fuse bit-field.
   *
   * \warning A Lock Error is issued if the Security bit is active and the command
   *          is applied to BOOTPROT or EPFL fuses.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note A write operation can only clear bits; in other words, an erase operation 
   *  must first be done if some bits need to be set to 1.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern void flashc_write_gp_fuse_bitfield(unsigned int pos, unsigned int width, U64 value);
  
  /*! \brief Writes a general-purpose fuse byte.
   *
   * \param gp_fuse_byte The general-purpose fuse byte: \c 0 to \c 7.
   * \param value The value of the specified general-purpose fuse byte.
   *
   * \warning A Lock Error is issued if the Security bit is active.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note A write operation can only clear bits; in other words, an erase operation 
   *  must first be done if some bits need to be set to 1.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern void flashc_write_gp_fuse_byte(unsigned int gp_fuse_byte, U8 value);
  
  /*! \brief Writes all general-purpose fuses.
   *
   * \param value The value of all general-purpose fuses as a word.
   *
   * \warning A Lock Error is issued if the Security bit is active.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note A write operation can only clear bits; in other words, an erase operation 
   *  must first be done if some bits need to be set to 1.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern void flashc_write_all_gp_fuses(U64 value);
  
  /*! \brief Sets a general-purpose fuse bit with the appropriate erase and write
   *         operations.
   *
   * \param gp_fuse_bit The general-purpose fuse bit: \c 0 to \c 63.
   * \param value The value of the specified general-purpose fuse bit.
   *
   * \warning A Lock Error is issued if the Security bit is active and the command
   *          is applied to BOOTPROT or EPFL fuses.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern void flashc_set_gp_fuse_bit(unsigned int gp_fuse_bit, Bool value);
  
  /*! \brief Sets a general-purpose fuse bit-field with the appropriate erase and
   *         write operations.
   *
   * \param pos The bit-position of the general-purpose fuse bit-field: \c 0 to
   *            \c 63.
   * \param width The bit-width of the general-purpose fuse bit-field: \c 0 to
   *              \c 64.
   * \param value The value of the specified general-purpose fuse bit-field.
   *
   * \warning A Lock Error is issued if the Security bit is active and the command
   *          is applied to BOOTPROT or EPFL fuses.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern void flashc_set_gp_fuse_bitfield(unsigned int pos, unsigned int width, U64 value);
  
  /*! \brief Sets a general-purpose fuse byte with the appropriate erase and write
   *         operations.
   *
   * \param gp_fuse_byte The general-purpose fuse byte: \c 0 to \c 7.
   * \param value The value of the specified general-purpose fuse byte.
   *
   * \warning A Lock Error is issued if the Security bit is active.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern void flashc_set_gp_fuse_byte(unsigned int gp_fuse_byte, U8 value);
  
  /*! \brief Sets all general-purpose fuses with the appropriate erase and write
   *         operations.
   *
   * \param value The value of all general-purpose fuses as a word.
   *
   * \warning A Lock Error is issued if the Security bit is active.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note The actual number of general-purpose fuse bits implemented by hardware
   *       is given by \c AVR32_FLASHC_GPF_NUM. The other bits among the 64 are
   *       fixed at 1 by hardware.
   */
  extern void flashc_set_all_gp_fuses(U64 value);
  
  //! @}
  
  
  /*! \name Access to Flash Pages
   */
  //! @{
  
  /*! \brief Clears the page buffer.
   *
   * This command resets all bits in the page buffer to one. Write accesses to the
   * page buffer can only change page buffer bits from one to zero.
   *
   * \warning The page buffer is not automatically reset after a page write.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern void flashc_clear_page_buffer(void);
  
  /*! \brief Tells whether the page to which the last Quick Page Read or Quick
   *         Page Read User Page command was applied was erased.
   *
   * \return Whether the page to which the last Quick Page Read or Quick Page Read
   *         User Page command was applied was erased.
   */
  extern Bool flashc_is_page_erased(void);
  
  /*! \brief Applies the Quick Page Read command to a page.
   *
   * \param page_number The page number:
   *   \arg \c 0 to <tt>(flashc_get_page_count() - 1)</tt>: a page number within
   *        the flash array;
   *   \arg <tt>< 0</tt>: the current page number.
   *
   * \return Whether the specified page is erased.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern Bool flashc_quick_page_read(int page_number);
  
  /*! \brief Erases a page.
   *
   * \param page_number The page number:
   *   \arg \c 0 to <tt>(flashc_get_page_count() - 1)</tt>: a page number within
   *        the flash array;
   *   \arg <tt>< 0</tt>: the current page number.
   * \param check Whether to check erase: \c true or \c false.
   *
   * \return Whether the erase succeeded or always \c true if erase check was not
   *         requested.
   *
   * \warning A Lock Error is issued if the command is applied to a page belonging
   *          to a locked region or to the bootloader protected area.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note An erase operation can only set bits.
   */
  extern Bool flashc_erase_page(int page_number, Bool check);
  
  /*! \brief Erases all pages within the flash array.
   *
   * \param check Whether to check erase: \c true or \c false.
   *
   * \return Whether the erase succeeded or always \c true if erase check was not
   *         requested.
   *
   * \warning A Lock Error is issued if at least one region is locked or the
   *          bootloader protection is active.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note An erase operation can only set bits.
   */
  extern Bool flashc_erase_all_pages(Bool check);
  
  /*! \brief Writes a page from the page buffer.
   *
   * \param page_number The page number:
   *   \arg \c 0 to <tt>(flashc_get_page_count() - 1)</tt>: a page number within
   *        the flash array;
   *   \arg <tt>< 0</tt>: the current page number.
   *
   * \warning A Lock Error is issued if the command is applied to a page belonging
   *          to a locked region or to the bootloader protected area.
   *
   * \warning The page buffer is not automatically reset after a page write.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note A write operation can only clear bits; in other words, an erase operation 
   *  must first be done if some bits need to be set to 1.
   */
  extern void flashc_write_page(int page_number);
  
  /*! \brief Issues a Quick Page Read User Page command to the FLASHC.
   *
   * \return Whether the User page is erased.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern Bool flashc_quick_user_page_read(void);
  
  /*! \brief Erases the User page.
   *
   * \param check Whether to check erase: \c true or \c false.
   *
   * \return Whether the erase succeeded or always \c true if erase check was not
   *         requested.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note An erase operation can only set bits.
   */
  extern Bool flashc_erase_user_page(Bool check);
  
  /*! \brief Writes the User page from the page buffer.
   *
   * \warning The page buffer is not automatically reset after a page write.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   *
   * \note A write operation can only clear bits; in other words, an erase operation 
   *  must first be done if some bits need to be set to 1.
   */
  extern void flashc_write_user_page(void);
  
  /*! \brief Copies \a nbytes bytes to the flash destination pointed to by \a dst
   *         from the repeated \a src source byte.
   *
   * The destination areas that are not within the flash array or the User page
   * are ignored.
   *
   * All pointer and size alignments are supported.
   *
   * \param dst Pointer to flash destination.
   * \param src Source byte.
   * \param nbytes Number of bytes to set.
   * \param erase Whether to erase before writing: \c true or \c false.
   *
   * \return The value of \a dst.
   *
   * \warning This function may be called with \a erase set to \c false only if
   *          the destination consists only of erased words, i.e. this function
   *          can not be used to write only one bit of a previously written word.
   *          E.g., if \c 0x00000001 then \c 0xFFFFFFFE are written to a word, the
   *          resulting value in flash may be different from \c 0x00000000.
   *
   * \warning A Lock Error is issued if the command is applied to pages belonging
   *          to a locked region or to the bootloader protected area.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern volatile void *flashc_memset8(volatile void *dst, U8 src, size_t nbytes, Bool erase);
  
  /*! \brief Copies \a nbytes bytes to the flash destination pointed to by \a dst
   *         from the repeated \a src big-endian source half-word.
   *
   * The destination areas that are not within the flash array or the User page
   * are ignored.
   *
   * All pointer and size alignments are supported.
   *
   * \param dst Pointer to flash destination.
   * \param src Source half-word.
   * \param nbytes Number of bytes to set.
   * \param erase Whether to erase before writing: \c true or \c false.
   *
   * \return The value of \a dst.
   *
   * \warning This function may be called with \a erase set to \c false only if
   *          the destination consists only of erased words, i.e. this function
   *          can not be used to write only one bit of a previously written word.
   *          E.g., if \c 0x00000001 then \c 0xFFFFFFFE are written to a word, the
   *          resulting value in flash may be different from \c 0x00000000.
   *
   * \warning A Lock Error is issued if the command is applied to pages belonging
   *          to a locked region or to the bootloader protected area.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern volatile void *flashc_memset16(volatile void *dst, U16 src, size_t nbytes, Bool erase);
  
  /*! \brief Copies \a nbytes bytes to the flash destination pointed to by \a dst
   *         from the repeated \a src big-endian source word.
   *
   * The destination areas that are not within the flash array or the User page
   * are ignored.
   *
   * All pointer and size alignments are supported.
   *
   * \param dst Pointer to flash destination.
   * \param src Source word.
   * \param nbytes Number of bytes to set.
   * \param erase Whether to erase before writing: \c true or \c false.
   *
   * \return The value of \a dst.
   *
   * \warning This function may be called with \a erase set to \c false only if
   *          the destination consists only of erased words, i.e. this function
   *          can not be used to write only one bit of a previously written word.
   *          E.g., if \c 0x00000001 then \c 0xFFFFFFFE are written to a word, the
   *          resulting value in flash may be different from \c 0x00000000.
   *
   * \warning A Lock Error is issued if the command is applied to pages belonging
   *          to a locked region or to the bootloader protected area.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern volatile void *flashc_memset32(volatile void *dst, U32 src, size_t nbytes, Bool erase);
  
  /*! \brief Copies \a nbytes bytes to the flash destination pointed to by \a dst
   *         from the repeated \a src big-endian source double-word.
   *
   * The destination areas that are not within the flash array or the User page
   * are ignored.
   *
   * All pointer and size alignments are supported.
   *
   * \param dst Pointer to flash destination.
   * \param src Source double-word.
   * \param nbytes Number of bytes to set.
   * \param erase Whether to erase before writing: \c true or \c false.
   *
   * \return The value of \a dst.
   *
   * \warning This function may be called with \a erase set to \c false only if
   *          the destination consists only of erased words, i.e. this function
   *          can not be used to write only one bit of a previously written word.
   *          E.g., if \c 0x00000001 then \c 0xFFFFFFFE are written to a word, the
   *          resulting value in flash may be different from \c 0x00000000.
   *
   * \warning A Lock Error is issued if the command is applied to pages belonging
   *          to a locked region or to the bootloader protected area.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern volatile void *flashc_memset64(volatile void *dst, U64 src, size_t nbytes, Bool erase);
  
  /*! \brief Copies \a nbytes bytes to the flash destination pointed to by \a dst
   *         from the repeated \a src big-endian source pattern.
   *
   * The destination areas that are not within the flash array or the User page
   * are ignored.
   *
   * All pointer and size alignments are supported.
   *
   * \param dst Pointer to flash destination.
   * \param src Source double-word.
   * \param src_width \a src width in bits: 8, 16, 32 or 64.
   * \param nbytes Number of bytes to set.
   * \param erase Whether to erase before writing: \c true or \c false.
   *
   * \return The value of \a dst.
   *
   * \warning This function may be called with \a erase set to \c false only if
   *          the destination consists only of erased words, i.e. this function
   *          can not be used to write only one bit of a previously written word.
   *          E.g., if \c 0x00000001 then \c 0xFFFFFFFE are written to a word, the
   *          resulting value in flash may be different from \c 0x00000000.
   *
   * \warning A Lock Error is issued if the command is applied to pages belonging
   *          to a locked region or to the bootloader protected area.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  #define flashc_memset(dst, src, src_width, nbytes, erase) \
            TPASTE2(flashc_memset, src_width)((dst), (src), (nbytes), (erase))
  
  /*! \brief Copies \a nbytes bytes to the flash destination pointed to by \a dst
   *         from the source pointed to by \a src.
   *
   * The destination areas that are not within the flash array or the User page
   * are ignored.
   *
   * All pointer and size alignments are supported.
   *
   * \param dst Pointer to flash destination.
   * \param src Pointer to source data.
   * \param nbytes Number of bytes to copy.
   * \param erase Whether to erase before writing: \c true or \c false.
   *
   * \return The value of \a dst.
   *
   * \warning If copying takes place between areas that overlap, the behavior is
   *          undefined.
   *
   * \warning This function may be called with \a erase set to \c false only if
   *          the destination consists only of erased words, i.e. this function
   *          can not be used to write only one bit of a previously written word.
   *          E.g., if \c 0x00000001 then \c 0xFFFFFFFE are written to a word, the
   *          resulting value in flash may be different from \c 0x00000000.
   *
   * \warning A Lock Error is issued if the command is applied to pages belonging
   *          to a locked region or to the bootloader protected area.
   *
   * \note The FLASHC error status returned by \ref flashc_is_lock_error and
   *       \ref flashc_is_programming_error is updated.
   */
  extern volatile void *flashc_memcpy(volatile void *dst, const void *src, size_t nbytes, Bool erase);
  
  #if UC3C
  
  /*! \brief Depednding to the CPU frequency, set the wait states of flash read
   *         accesses and enable or disable the High speed read mode.
   *
   * \param cpu_f_hz The CPU frequency
   */
  void flashc_set_flash_waitstate_and_readmode(unsigned long cpu_f_hz);
  #endif // UC3C device-specific implementation
  
  //! @}
  
  
  #endif  // _FLASHC_H_
  