This document contains the release notes of LiteOS.
by LiteOS developers 
www.liteos.net


Oct 2 2011 Version 2.1

Major changes:
 Fully integrated with AVR Studio with IRIS and MicaZ support
 Fixed event logging and memory tracing functionality 


Sep 12 2011 Version 2.0.1
Bug fix release

July 2 2011 Version 2.0
Major changes:

 Closely integrated with AVR Studio 5.0
 Bug fixes
 Extensive testing and evaluation 

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Jan 23 2011 Version 2.0 Beta
Major changes:

 Support for Windows 7
 Integrated compilation of the kernel and apps
 Much improved code quality with bug fixes
 Dynamic instrumentation
 Communication driver updated for higher energy efficiency
 
 Features are tentative only and will be added/updated in the official release of 2.0.

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Oct 6 2008 Version 1.0

Major changes:

 Support for Windows Vista
 Support for Crossbow IRIS motes
 Use of standard installer on Windows XP and Windows Vista
 Plugin-model in software distribution
 Multiple plugins added
 Improved kernel robustness
 Accurate timing API in the kernel
 



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May 3 2008 Version 0.3.3

Software changes:
	New features:
				Added the compilation mode for iris (under development, support for iris nodes)
			 	Added express mode for the installer
			 	Added CPU counter for measuring the CPU idleness (requires recompilation of the kernel to use, by turning on #define PLATFORM_CPU_MEASURE 1 in makefile)
	Improvements:
				Better detection of memory conflicts during compilation
				Several minor bug fixes throughout the system for optimization
	Documentation changes:
				Updated to 0.3.3
			
				

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March 12 Version 0.3.2

Bug fix release

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Feb 28 2008 version 0.31

Software changes£»

  New features:
        Added support on Linux Operating System (tested on Fedora 7)
        Added the "memory" command in the shell to display flash memory and RAM allocation information 
        Development versions of LiteOS now fully hosted on Sourceforge. 
 
  Improvements:
        Improved response time of command cp
        Improved robustness of the shell by adding command semantics and vaildness check
        Improved kernel robustness by checking binary validness: if a binary application tries to allocate
        memory that has conflict with the other threads, it will not be loaded. 
        Improved uisp installation procedure. Now more compatible with different environments and fewer possible conflicts. 
 
  Major bug fixes:
        Fixed the bug on "cd .." at root directory
        Fixed the bug of creating new directories in the node level 
        Fixed the bug that sometimes executation of a binary will make the node no longer responding
   
Documentation changes:

        Added installation guide on Linux in the manual. 
        Added links on the website to the courses that are currently using LiteOS for projects
        Added links on the website the LiteOS publications

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Jan 20 2008 version 0.3
Software changes:

 New Features:
	Added a built-in event logger for tracing recording

	Added plug-and-play multi-hop routing support

	Added several new applications in the Apps directory

	Added channel selection in the kernel
	

 Improvements:

	Source code re-organization for portability. Now there is   
        a clear boundary between hardware related and hardware independent code 

	Improved response time for some terminal commands 

	Improved system robustness against application failures

 Major bug fixes
	
	Fixes the bug in debugging to watch long strings (> 256 bytes)

	Fixes the bug that sometimes copy command fails

	Fixes the bug that sometimes applications may be accidentally blocked

	Fixes the bug that uninstalling application may not completely release system resources

	Fixes the bug that sometimes radio socket will crash due to radio state error

			
 Documentation changes:

	Added application note 102, 103

	Added LiteOS library API documentation
	

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Oct 11 2007 version 0.2
Software changes:
	Added C programming support
	Added programming library to support various programming tasks
	Enhanced sensor support, including magnetic and accelerators
	Frequency hopping support and radio power setting support
	Java tools library added
	Debugging support for variable watches and breakpoints
	Dynamic memory support
	Kernel detection of buffer overrun (patial, not complete)
			
Documentation changes:
	Added programmer's guide
	Added application note 101
	
Website changes:
	Color setting changes
	Updated with news and mailing list mirrors
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Sep 2 2007 version 0.12
Added interactive installer for more intuitive installation procedure
Fixed several bugs in the file system 
Added more robust error handling in the LiteShell
Developed single binary image for installing the kernel
Revised EEPROM handling
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Aug 9 2007 version 0.11
Fixed several bugs related to the kernel and the shell. 
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July 30 2007 version: 0.1
Initial release of LiteOS demo. 
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