[Tinyos-help] Application of dynamic address allocation

[Itamar Amsili]

My application is based on Ad-Hoc infrastructure so it's a little bit different,
but the main idea is quite the same.
Do you have any Code i can take a look at?
My big problem is acctualy implementing the protocol on code, so some
examples will be a big big help for me.

Thanks alot

Itamar


----- Original Message -----
From: "R. Steve McKown" <rsmckown at yahoo.com>
Date: Thursday, August 16, 2007 3:28
Subject: Re: [Tinyos-help] Application of dynamic address allocation
To: tinyos-help at millennium.berkeley.edu
Cc: Itamar Amsili <amsilii at bgu.ac.il>, Jacob Sorber <jacob.sorber at gmail.com>

> On Sunday 12 August 2007 07:21:36 Itamar Amsili wrote:
> > Hi Jacob,
> >
> > I'm looking for a DHCP-style application, but much simple, 
> which means
> > assigning a 2-byte address(the TOS_NODE_ID in tinyos 2.x) to a 
> node who is
> > joining a network. if there is no network in the reception 
> area, the node
> > will assign to itself the default=1, and will continue 
> searching the area.
> > if the node finds a nother node, i.e. there is a network 
> around, it will
> > recieve an address to assign from the network(depends on how 
> many nodes are
> > in the network already). It's an Ad-Hoc network,no leader.
> > this is it in general. it is not so complicated but i have no 
> experience in
> > the NesC code so i need an example or reference of the 
> operations we take (
> > initializing, sending & recieving data, timers etc ). If you 
> have any ideas
> > it will be great.
> 
> We implement a dhcp-like address assignment operation.  
> When a node wants to 
> join a message, it unicasts to the well-known base station 
> address a join 
> request packet, which includes its node-unique id value (a 64-
> bit guid in our 
> case).  The base station looks in its active tables for a 
> guid->netid mapping 
> and if not present it creates one via a hash.  It then 
> returns a join 
> response packet to the original requester, via broadcast.  
> The node then sets 
> it's local ID via amSetAddress() exported by 
> ActiveMessageC.  It also sets 
> TOS_NODE_ID and does some jockeying with the cc2420 radio so 
> that it is also 
> informed of the new local netid (2.0.2 may add some stuff to 
> make this 
> easier).
> 
> Hope this helps.
> 
> >
> > Thanks in advance
> >
> > Itamar
> >
> >
> > ----- Original Message -----
> > From: Jacob Sorber <jacob.sorber at gmail.com>
> > Date: Saturday, August 11, 2007 21:25
> > Subject: Re: [Tinyos-help] Application of dynamic address allocation
> > To: Itamar Amsili <amsilii at bgu.ac.il>
> > Cc: tinyos-help at millennium.berkeley.edu
> >
> > > Are you looking for a full dhcp-style application or do you want
> > > to know how
> > > to change the mote's address?
> > >
> > > Changing the mote's address should be easy.  At least in
> > > Tinyos 1.x,
> > > TOS_LOCAL_ADDRESS is just a variable (uint16_t).  So, you
> > > should be able to
> > > change its value at runtime.  I haven't ever needed to do
> > > this, but from the
> > > code I don't see any reason why you couldn't.  Try it out
> > > and see.
> > >
> > > As for doing dhcp on motes, I don't know of any existing
> > > application that
> > > does this.  I'm sure you can do it, but I don't know that
> > > you really want
> > > to.  If you could give some details about what exactly you
> > > need, it might
> > > help.  What kind of addresses are you assigning?  
> 2-
> > > byte TinyOS addresses?
> > > IPv4?  Do you need to be able to uniquely identify your
> > > nodes (i.e. do you
> > > need a unique node address (like a MAC address) as well as the
> > > dynamic one?
> > >
> > > Anyway, hope that helps.
> > >
> > > Jacob Sorber
> > >
> > > On 8/11/07, Itamar Amsili <amsilii at bgu.ac.il> wrote:
> > > > Hi all,
> > > > I need to implemet an application of allocating an address to
> > >
> > > a mote in a
> > >
> > > > dynamic way,
> > > > i.e. after the mote is waking up, it's searching for a network
> > >
> > > to join, if
> > >
> > > > finding one- the network gives it
> > > > an address, and if not- allocating to itself an address.
> > > > Is anyone has an idea or example or kind of application i can
> > >
> > > use to help
> > >
> > > > me?
> > > > I need it ASAP...
> > > >
> > > > Thanks alot,
> > > >
> > > > Itamar
> > > >
> > > > _______________________________________________
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> > > > Tinyos-help at Millennium.Berkeley.EDU
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> > >
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> > >
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> >
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> 
> 
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