Thanks for your answer, in my program i allocate memory to create in each mote
a buffer-chain (i use structures that allocate memory dynamically). But i don't
know exactly how much dynamic memory i can use in Micaz motes.
For example, if after compiling i use 1419 bytes in RAM and 19748 bytes in ROM,
is the rest used for dynamic allocation?
i don't understand this passage about exactly how much memory i can use
dynamically..for me understanding would be really important.
Thanks for your availability,
Cheers
Daniele
-----Original Message-----
From: Michael Schippling [mailto:[EMAIL PROTECTED]
Sent: Fri 7/28/2006 7:12 PM
To: Munaretto, Daniel
Cc: [email protected]
Subject: Re: [Tinyos-help] Help with real node behaviour!Micaz,tinyos
1.x
Well there's 128K of PROM and 4K of RAM in the ATMEGA 128
and I believe it is all available. At the end of the TOS
compile you get a line that says how much your program is
using. If you are not doing any kind of dynamic allocation
this should be the maximum used. Perhaps you have a pointer
or something that is running amuck in a way that you don't
see in simulation.
I think using FLASH is rather slow and the number of MTBF
cycles is not conducive to temporary storage.
MS
Munaretto, Daniel wrote:
> I did other experiments and i found that, with little data size, the
nodes are able to send and receive all packets they generate. So it's
definitely a memory problem. But i think not to use so much memory and i free,
when i can, the used structures. Remember i need a buffer chain in each node
cause i store incoming packets and then i create new coded packets from these
buffers.
> Now my question is: with Micaz motes, tinyos 1.x, how much memory in
ROM and RAM can i use?
> and is it possible to use the FLASH memory?if yes how?and what's the
size of it?
> If possible, i'd like to receive very precise informations for
understanding my problem in the best way.
>
> Thanks very much for your availability
> cheers
> Daniele
>
> -----Original Message-----
> From: Michael Schippling [mailto:[EMAIL PROTECTED]
> Sent: Thu 7/27/2006 9:25 PM
> To: Munaretto, Daniel
> Cc: [email protected]
> Subject: Re: [Tinyos-help] Help with real node
behaviour!Micaz,tinyos 1.x
>
>
>
> Sounds like your buffering scheme is overflowing and crashing
the mote.
> One clue is that I seem to see a lot of length 5 buffer pools
in TOS...
> You might want to double check that you are freeing buffers
after use.
> MS
>
> Munaretto, Daniel wrote:
> > Hi all,
> > after a lot of simulation in TOSSIM, i uploaded my programs
on the motes.
> > By reading the leds, i'm able to understand what happens.
> >
> > If i run on motes a normal flooding, it's all ok. All packets
are sent and received.
> >
> > But if i run a more complex program, where before
broadcasting packets i code packets i stored in the node's internal buffer, i
notice i cannot receive over 5 packets (in my experiments i generate 8 packets
per node). But if i run only one mote, it's able to generate all packets.
>
> > So if i run 2 nodes, one seems blocked or crashed after
receiving 5 packets (Leds stop to work, fixed on a color or void) and the other
one continue to send packets in a properly way.
>
> > I made with several motes and it's the same, also changing
batteries.
> >
> > Anyone could help me, please?
> > i don't know what's wrong, in TOSSIM was all ok.
> > And i'm using micaz motes, tinyos 1.x, after compiling i see:
used RAM=1657 bytes, used ROM=19600 bytes.
> >
> > Thanks very much, i hope someone could answer to me!
> > cheers
> > Daniele
> >
> >
> > _______________________________________________
> > Tinyos-help mailing list
> > [email protected]
> >
https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>
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