[Tinyos-help] A lot of Bad packet messages printed in the prompt window

[Michael Schippling]

I found the "retraction period" to be significant in my
reliability testing that I've previously ref'ed. Things
were greatly improved by putting a small delay between the
reception of a message and the sending of a new message
at the host end. I don't know if this a host effect or
slow switching from receive to xmit on the radio end.
It was much more pronounced on the mica2's than the 'Z's.
I didn't do any extensive testing with the telosb.

MS

Maisa Ben Jamaa wrote:
> Hi,
> Umm, so this can be like a collision that was being happening over the 
> serial communication channel.
> Thank you Faisal
> 
> 2009/7/18 Faisal Aslam <aslam at informatik.uni-freiburg.de 
> <mailto:aslam at informatik.uni-freiburg.de>>
> 
>     Hi,
> 
>     I also have this error if I send packet from mote too fast (Usually
>     in a loop). If you can have a small delay between packets being send
>     from mote then you will have lesser bad packets errors.
> 
>     best regards,
>     Faisal
> 
>     Maisa Ben Jamaa wrote:
> 
>         Hi,
> 
>         If tinyos reports a lot of bad packet messages during a pc and
>         sensor mote
>         communication based on an usb connection, so in your opinion why
>         this,
>         is happening?
> 
>         Precisely, what causes that the *packet crc* is different from
>         the computed one?
>         (more details can be found in Packetizer.java file)
> 
>         Best regards,
>         Maissa Ben Jamaa
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>          
> 
> 
> 
> 
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