[Tinyos-help] data packet losses

Shaun Lawrence slawrence at invocon.com
Fri Feb 15 10:02:10 PST 2008

I'm not familiar with CollectionC but some of my program used AMSnoop which
will receive packets even if it does not belong to its own group. I had to
place a filter in this routine to drop the packet. Maybe you have a similar




From: tinyos-help-bounces at millennium.berkeley.edu
[mailto:tinyos-help-bounces at millennium.berkeley.edu] On Behalf Of Kaan Tuna
Sent: Friday, February 15, 2008 9:35 AM
To: Omprakash Gnawali
Cc: tinyos-help at millennium.berkeley.edu
Subject: Re: [Tinyos-help] data packet losses


Hello again,

When testing, I found the reason of the problem : With a single network, i
have no problem. But when I build another CollectionC network in the same
room, or another root, nodes of the first network start to send packets to
this newest root, despite networks and roots have different Group-IDs.  How
can i solve this? Any idea or help would be appreciated.

Best Regards.



On 2/15/08, Kaan Tuna <kaantuna at gmail.com> wrote: 


i will try to sleep the root and try to send you the log soon.

Thanks in advance.

Best regards!




On 2/15/08, Omprakash Gnawali <gnawali at usc.edu> wrote: 

On Fri, Feb 15, 2008 at 2:12 AM, Kaan Tuna <kaantuna at gmail.com> wrote:
> Thank you Omprakash.
> 1) I am setting 1500ms on every sending node, but the root node is always
> awake.

Root sends beacons so you need to set the sleep interval on the root as

> 2) I am getting the right packet, or sometimes anything. I mean, coming
> packets are right but some of them never comes.

If you have a way to log the packets that the other motes are sending
over the UART, please send them.

- om_p



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