CometOS

A component-based, extensible, tiny operating system for wireless networks

Staff	Stefan Unterschütz Andreas Weigel
Start	1. January 2012
End	31. December 2013

Project Description

CometOS is a component-based, extensible, tiny operating system for wireless networks. It is written in C++ and highly inspired by OMNeT++'s communication paradigm. It allows the execution of protocols within the OMNeT++ simulation environment as well as on resource-restricted platforms such as wireless sensor nodes.

Here you can download the current version.

Key Features

forces type safety for message types (no type casting necessary)
avoids OMNeT++'s boilerplate code for handling messages (timers and gates are directly mapped to callback methods)
excellent integration with OMNeT++
utilizes the MiXiM framework for wireless channel simulation
dynamic memory is not mandatory for running the CometOS core, however, an efficient library for dynamic memory allocation on microcontrollers is provided
exploits C++ template programming in order to generate fast code for microcontrollers
excellent debugging support
supports object-aggregation similar to NS3 for cross-layer support
contains template library optimized for sensor nodes (e.g., static/dynamic lists, maps)
customizable serialization/deserialization mechanism for airframes
intended for a modular/layered protocol design

Currently Supported platforms

OMNeT++ Simulation environment
AVR ATmega128RFA1

To ease transition to other hardware platforms, we keep the interface to the hardware-dependent part as slim as possible. The core framework at minimum needs the implementation of a timer interface, needed by the scheduler to realize message passing (and providing millisecond-accuracy timers for the user). Furthermore, a generic MAC interface has to be implemented to provide high-level access to the transceiver and enable transmissions to the wireless channel.