Contiki: OS for Low-Power Networked Embedded Systems

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The Contiki team has just released version 2.1 of the open source Contiki operating system for low-power, wireless, memory-constrained networked embedded devices that typically have as little a few kilobytes of RAM. The major highlight of this release is a unique energy profiling mechanism that measures where energy is spent, and how much energy that is consumed. This is extremely important when optimizing for low-power operation: to know where to optimize, one must first know where energy is spent. Other additions to the 2.1 release are low-power radio protocols that increase system lifetime from days to years, and improved data collection routing protocols.

http://www.sics.se/contiki/
http://www.sics.se/contiki/curre ... y-in-real-time.html

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Contiki 2.1 with Energy Profiling
Written by Adam Dunkels, Tuesday, 04 December 2007

The Contiki team is proud to announce the release of Contiki 2.1, bringing energy profiling of wireless sensors to the world. Version 2.1 also includes power-saving radio mechanisms for low-power radio networking and routing improvements for low-power sensor data collection. Read the changelog here, download the source code here, see the installation instructions here, and a few tutorials here.
Contiki 2.1 brings a set of new features: a novel power profiling mechanism, a power-saving radio mechanism, and improved low-power radio routing mechanisms. Contiki's unique energy profiling feature makes it possible to see where in the system energy is spent and how much energy is spent on each individual peripheral, something which is extremely useful for battery-powered networked embedded systems: to optimize systems for low-power operation, one must first know where the energy is spent. The new power-saving radio mechanism switches off the radio when it is not needed and thereby increases system lifetime from weeks to years.

The 2.1 release contains ports to MSP430, x86, 6502, and Z80-based platforms, in particular the Tmote Sky and the ESB wireless sensor network boards. New for this version is support for the MSB430 board. The 2.1 release also contains the COOJA network simulator that speeds up software development and assists in the study and evaluation of communication protocols.

Read the detailed changelog here: http://www.sics.se/contiki/changelog.html

Download the software here: http://www.sics.se/contiki/download.html