[Tinyos-help] Antitheft / Collection problems after a few days of runtime

[Philip Levis]

Todd Roper wrote:
>
> Hello,
>
> I am seeing some problems occur with the Antitheft App when running 
> for a few days. I made a few slight modifications such as setting the 
> time interval for sending messages back to a root to every 5 minutes 
> and removing Dissemination as it is not needed. Would changing the 
> timing in this way affect the “Collection” long term? It appears to do 
> so since I can simply reset the node and packets start coming in 
> again. Another interesting fact is that some of the nodes will just 
> disappear for hours and then show back up some time later. (all nodes 
> are within a strong signal range). I think the basic question comes 
> down to: how reliable is the /lib/net/ctp at this point in the 
> development?
>
> Any comments or help would be appreciated.
>
> I am basically looking to get a reliable low-power multihop back to a 
> root.
>

CTP has been run for days with no mishap.

Three questions:

1) Are you on a wired testbed, or do you have nodes deployed untethered? 
If the former, then you can enable CTP's debugging output (look at 
TestNetwork) and examine what messages a failed node sends.
2) What platform are you using? I've heard scattered reports of the 
micaZ radio stack locking up, but I think David Moss has solved this issue.
3) What version of TinyOS are you using?

Phil