I agree...since you need a proxy of some kind on a PCish host,
I would put parsing and encoding software there instead of pushing
it all the way out to the sensors. Appropriate Technology and all...
MS
J. Ryan Stinnett wrote:
As I said, the largest packet would be about 256 bytes, but the standard
T2 application data length is 28 bytes, which seems far too small for
tagged data of any more than the simplest kind. This would mean you'd
likely have to split your data across multiple packets, which also adds
more complexity. Keep in mind that micaz motes only have 4 KB of RAM,
so you could run out of RAM quickly if you increase the data length or
store a large number of packets. Also, the XML parser could cause a
huge increase in code size.
Most likely, you should be able to do without XML. With more details on
your specific application, perhaps someone could suggest an alternative.
- Ryan
Adi Mallikarjuna Reddy V wrote:
Ofcourse, what ever your saying regarding the XML on a sensor node is
right. As you said, it is the application that forced us to think in
this way.
What do you think are the possible obstacles in using XML format for
messages and then parsing them at the sensor nodes.
Regards
Adi
On 8/2/07, *J. Ryan Stinnett* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Interesting, so there apparently is an XML library... However, I
still
can't see a real need for that on a mote. I've found that XML can be
useful way to store data on a computer that is connect to a sensor
network, but on the motes themselves I can't see why you'd want to go
that route. Is there a particular reason or application that led
you to
consider XML?
- Ryan
Adi Mallikarjuna Reddy V wrote:
> Hi Ryan,
>
> Later when I searched for it, I found something called TinyXML at
> http://ics.yeditepe.edu.tr/tnl/html/tinyxml.html. Have look at
it. I
> didnt explore the capabilities of it.
>
> Regards
> Adi
>
>
> On 8/2/07, *J. Ryan Stinnett* < [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>>
> wrote:
>
> If you mean parsing XML data in messages sent via the radio,
I don't
> think that would be very feasible. XML is a pretty verbose
format, and
> the largest packet the CC2420 can send is around 256
bytes. It would
> probably be best to stick with more compact data
representations.
>
> - Ryan
>
> Adi Mallikarjuna Reddy V wrote:
> > Hi all,
> >
> > Has any one tried out having an XML parser running on the
sensor
> nodes
> > along with TinyOS/nesC? Something like TinyXMLParser,
which can
> > interpret the XML messages that a node receives?.
> >
> > Any suggestions on this line would be of great helpful.
> >
> > Regards
> > Adi
> >
> > --
> > -----------------------------------------------
> > I was always alone in this world,
> > wanted to be loved,by someone.
> > I always had teary eyes,
> > wanted it to be wiped by someone.
> > --------------------------------------------------
>
>
>
>
> --
> -----------------------------------------------
> I was always alone in this world,
> wanted to be loved,by someone.
> I always had teary eyes,
> wanted it to be wiped by someone.
> --------------------------------------------------
--
-----------------------------------------------
I was always alone in this world,
wanted to be loved,by someone.
I always had teary eyes,
wanted it to be wiped by someone.
--------------------------------------------------
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