AvRtos Reviews

I was attracted to this RTOS because I'm working on several ATXMEGA E5 projects that need a very simple scheduler for real time machine control. Nice work overall and I thank the author for it. However, the documentation (strictly via DOXGEN) is entirely inadequate and non-professional. Whatever happened to a simple text manual describing the initialization, limitations and task interface from the task to the kernel? This lack of documentation requires that the user study the source in detail for each kernel service to understand the implications and limitations - not for the beginning RTOS user. Also, even though most hardware-specific code is defined in the "AvRtosHw.h" header you still have to modify "AvRtos.h" for task, semiphore and queue size allocation, etc. It would have been much better to define all required hardware specific attributes early in AvRtos.h (for editing) or at the beginning of the user's main program header and eliminate the confusing extra header file "AvRtosHw.h". But, in conclusion, I have it working very well now that I've re-organized the structure, gotten rid of "AvRtosHw.h" and made it easy to define and allocate task resources in a unified manner. The author had the right idea, because there is a need for this type of simple RTOS for AVR, but it could be so much more with a few (not many) additional features, such as MUTEX's. If others were willing to jump on board to help with this effort- especially documentation, I'm game. Update to the above review 6/19/17: With Harald's release of 2.0.2 I'm changing my rating to 4 stars. Harald added Mutexes, which are an important element to my work. He now has a "Documentation" page which, while still in progress, is a welcome addition to his project.