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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, 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:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: 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
* 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.
* ----------------------------------------------------------------------------
*/
//------------------------------------------------------------------------------
/// \dir
/// !!!Purpose
///
/// This directory provides a library of re-usable code to build %Norflash
/// applications with Atmel AT91 microcontrollers.
///
/// !!!Contents
/// The %norflash driver interface is implemented to support four layers of
/// abstractions such CFI level, API level, low-level flash device driver and
/// Hardware-specific bus operations. Users can focus on writing the high-level
/// code required for their particular applications.
///
/// - CFI interface : Common Flash Memory Interface(CFI) allow in-system or
/// programmer reading of flash device characteristics. It
/// provides basic fuction NorFlash_CFI_Detect() to detect %flash
/// chip by CFI, it also includes some general functions to get
/// %flash device informations like memory size, byte and word
/// configuration, block configurations and so on.
/// - API layer: API layer consists of several functions that allow user to
/// do operations with flash in a unified way. As a result,
/// future device changes will not necessarily lead to the code
/// changes in the application environments. In this %norflash
/// library we support AMD and INTEL command set.
/// - Low-level driver: It implement procedures to program basic operations
/// described in the datasheets for flash devices. All low-level
/// functions invkes the related supported program algorithm
/// (AMD/Inter) which is auto detect by CFI before. The low-level
/// code takes care of issuing the correct sequences of write/read
/// operations for each command.
/// - Hardware-specific bus operations: The low-level code requires hardware-
/// specific read/write Bus operations to communicate with the
/// %norflash devices. The implementation of these operations is
/// hardware-platform dependent as it depends on the microprocessor
/// on the location of the memory in the microprocessor's address
/// space.
//------------------------------------------------------------------------------
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