Re: [avr-gcc-list] avr-gcc-4 TinyOs

[Ned Konz]

Bob Paddock wrote:
> If you are interested in State Machines check out the Ragel State Machine 
> Compiler.
>
> http://www.cs.queensu.ca/~thurston/ragel/
>
> I've used it with GCC and AVR's for years.

I have looked at it, but it doesn't support the Harel/UML-style 
hierarchical state machines that I tend to end up with.

Instead of a generator, I use a framework that has been ported to the 
AVR (I did the first AVR port that I know of, but it has also been done 
by the guy who wrote it).

See the Quantum Framework at:
http://www.quantum-leaps.com/

This framework supports event queueing, may be set up to be preemptive, 
is well documented, and is pretty light-weight in terms of code size and 
speed (and very light-weight in RAM usage). There is a light version of 
it called QP-Nano that is quite appropriate for the smaller AVRs (say 
the AVR45).

http://www.quantum-leaps.com/products/index.htm#QP-nano

AVR port at:
http://www.quantum-leaps.com/avr/index.htm

The QDK-nano AVR-GCC is dual-licensed (GPL/commercial), so depending on 
your needs you should be able to find something that fits. Price is 
reasonable. It's royalty-free.

Ned Konz