NodeID can be any value that is guaranteed to be unique across all
nodes. The most convenient (to set/read) is most likely TOS_NODE_ID,
but there may be other values available depending on your hardware platform.
Depending on your platform, you may/may not have this "SerialID"
feature. For example, the DS2411 chip is used on some of the tmote
brand motes for this purpose.
-Paul
Ricardo . wrote:
Thanks for your response.
What do you mean by NodeID, is obtained by TOS_NODE_ID, right? My
problem is that I can not change this value efficiently. Worse, it is
not desirable for my application to be dependent on this number that
is set manually.
So my idea was to have a unique number that is not manually modified.
I have read here on the mailling-list that I can obtain the EUI, the
unique 8bits of ZigBee module through the interface S2411, or the
64bit unique identifier through interface SerialId. The problem is
that I do not find any of this interfaces in my TinyOS Souce Tree (I'm
using TinyOS-2.0.2-2). I could not know why these interfaces are not
available, or if have been renamed.
I'm stuck in this problem, any ideas are welcome!
On Sat, Nov 28, 2009 at 2:53 AM, Paul Johnson <[email protected]
<mailto:[email protected]>> wrote:
Ricardo,
It's very easy to have a unique sequence number. Just similar to
what you suggested, you can combine the node's ID with the local
sequence number. However, I wouldn't suggest adding the two
numbers together. If you do, then you lose the uniqueness of the
sequence number. Instead keep them as separate fields in the
packet. The sequence number is now <K,NodeID>, assuming a node
doesn't re-use a K value, it will be globally unique because no
two nodes should have the same NodeID.
Having globally unique sequence numbers is easy, totally ordering
each sequence number is another matter.
-Paul
Ricardo . wrote:
Please, anyone?
Any suggestions will be welcome....
Hello everyone,
I wonder if there is any way to send a message with a
sequence number that is guaranteed to be unique across the
network. For
example, MacAddress + K, where K is a counter that is
incremented each time that a message is sent.
My mote has a RF230 radio.
This is possible, or something that has a similar behavior?
Thanks in advance,
--
Ricardo
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