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eLua is an effort to bring the Lua programming language in the embedded world (MCUs). It is meant to be a complete MCU development environment. It currently runs on a number of ARM variants, as well as Cortex (and i386 as a proof of concept). Version 0.5 was just released, this is the changelog:

* Added support for STR7 CPUs from ST
* Added TCP/IP support using the uIP stack
* Added support for console and shell over TCP/IP instead of serial link
* Added the "net" module (eLua's interface to TCP/IP functions)
* Added the "cpu" module (eLua's interface to the target CPU)
* New samples: morse.lua (Morse code encoder), lhttpd.lua (Lua scripting HTTP
* Added support for cross-compiling Lua code (compile on PC, run on target)
* XMODEM can now receive Lua bytecode in addition to Lua source code
* The XMODEM buffer is now dynamic (grows as needed) instead of fixed size
* Project documentation updated