Look to the oft quoted octavetech doc for info about the message and payload:
http://www.octavetech.com/pubs/TB5-01%20Deciphering%20TinyOS%20Serial%20Packets.pdf
In general the stuff that gets put into the data payload is defined as
a struct in a .h file in the app's directory. surgeCmd.h would be one
place to look...
You can modify the payload size by changing TOSH_DATA_LENGTH (in T1 at least).
There are limits and tradeoffs. Search for that string on this list for details.
MS
Adi Mallikarjuna Reddy V wrote:
Hi,
Is maximum packet size of TinyOS is 32 bytes?Moreover in Surge
application 34 byte packet some times. Surge do send the 22 byte packet.
What does this packet signify and can any one tell me the packet format?
Regards,
Adi
On 8/9/07, *Michael Schippling* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
It is all, of course, a matter of software....
Look for the actual message packet structures in .h files in the various
application's source directories -- those structs are overlaid on the
Msg.data[] buffer. As to how many variations there are and how they
work,
that is a matter of conjecture...google may be your friend here.
T1.1.N all have the same directory and file structure. I would recommend
that you get on the higher .N number side of things, 1.1.7 or greater
if you value your sanity.
MS
Adi Mallikarjuna Reddy V wrote:
> Hi Michael,
>
> Thanks for the prompt reply. I am using TinyOS 1.0 version. I
guess even
> there the directory structure is similar, I can look for those
things
> mentioned. How about the Multi-hop Protocol format, it has been
> allocated 7 bytes in TOS_Msg structure. Are there any other
alternatives
> to this protocol? Like broadcasting, selective flooding etc?
>
> Regards,
> Adi
>
>
> On 8/8/07, *Michael Schippling* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>> wrote:
>
> In T1 you can look for the various AM.h files to get the TOS_Msg
> structure.
> For instance the mica2 and UART use tos/types/AM.h, whereas
the micaz
> radio uses: tos/platform/micaz/AM.h (and yes, you pretty much
just have
> to know which one to look at...although adding a -v to the
ncc command
> will give some guidance).
>
> The contents of the message payload are defined by "AM" message
> structures
> in each application, e.g., apps/Surge/Surge.h
>
> MS
>
>
>
> Adi Mallikarjuna Reddy V wrote:
> > Hi,
> >
> > I have some doubts regarding the packet format that is
followed
> by the
> > TinyOS.
> >
> >
> > 1. I came to know that TOS_Msg is dependent on the
radio/platform
> > that we have been using. Is that true? If so, where
can I
> find the
> > different radio/platform and its corresponding
packet format?
> > 2. Even within TOS_Msg, again there are other
components such as
> > 1. multihop protocol packet format
> > 2. Surge packet format
> >
> > My doubt is what are the other alternatives
available
> to the
> > above formats (multihop and surge)
> > 3. If anyone of you know about whether other OSs like SOS
> follow the
> > similar method, let me know
> >
> > 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.
> > --------------------------------------------------
> >
> >
> >
>
------------------------------------------------------------------------
> >
> > _______________________________________________
> > Tinyos-help mailing list
> > Tinyos-help@Millennium.Berkeley.EDU
<mailto:Tinyos-help@Millennium.Berkeley.EDU>
> <mailto:Tinyos-help@Millennium.Berkeley.EDU
<mailto:Tinyos-help@Millennium.Berkeley.EDU>>
> >
>
https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
> <
https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help>
>
>
>
>
> --
> -----------------------------------------------
> 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.
--------------------------------------------------
--
Platform: WinXP/Cygwin
TinyOS version: 1.x, Boomerang
Programmer: MIB510
Device(s): Mica2, MicaZ, Tmote
Sensor board: homebrew
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