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From: rowebots on 30 Mar 2010 22:35
For a free rtos offering try Unison or DSPnano for MCUs. It has all that
you need:

- pthreads, mutex, ... POSIX API, Linux compatible
- complete I/O model
- serial I/O
- file system
- tcp stack (free for non commercial use only)

If you want commercial support, it is available in a more advanced version
from RoweBots at rowebots.com. I has all the add on components that you
might need.

Kim



>Sorry if this is a FAQ, I have googled around and don''t find much.
>
>What to I want from an RTOS?
>
>- The standard message/timer/mutex/thread stuff
>- Some sort of abstraction layer, so that I can unit test my code
>under Linux or Windows before hitting the hardware
>- Support for a bunch of processors
>- Easily configurable
>- Good documentation & support forums
>- in fact anything that lets me concentrate on my own design/code/test
>and not have to worry too much about the o/s
>- hmm, built in memory pool & debug trace would be useful (and does
>anyone have any pointers to good FSM bases classes for C++ ?)
>
>You don't have to discuss here, although I would quite welcome it,
>just some URLs would suffice.
>
>Thanks in advance for any help.
>

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