porting java code to contiki-os

Question

i am using contiki-os to simulate some motes which would have semantic capabilities. As the contiki-os (erbium) is written in C but our semantic libraries are written in java.

can anyone here guide me if it is possible to exploit these libraries in erbium or contiki-os. or i have to rewrite everything from scratch ?

update

just a minor update to the question. is it possible to use java code on the cooja simulator?

Answer 1

Cooja is indeed written in Java.

You can extend or modify Cooja if you need.

You can find out more about Cooja on the Contiki wiki as well as in numerous papres by Fredrik Österlind. Perhaps you should also take a look at Fredrik's PhD thesis "Improving Low-Power Wireless Protocols with Timing-Accurate Simulation", which is mostly about Cooja.

Answer 2

You might be able to use something like this:

http://www.codemesh.com/products/junction/

It appears to have a code generator that takes a java bytecode and create C code from it... but it might also need a runtime library that's platform specific.

With all that in mind, I don't think you will be successful. Most of the platforms are nearly out of space and/or flash by the time you are working with Erbuim; I doubt you'll have resources to process java code somehow.

And if you did get some success from this approach it would probably take a lot of time and effort to do so. With that time and effort you probably could have written the C code to do what you need instead.