Hi,
i’m working with micaz motes.
You are right, the 64 bit MAC address received in first param. of the event
MLME_ASSOCIATE.indication varies every time a new device is associated.
I’ve typed: make micaz install,X mib520,/dev/ttyUSB0 where X is the
TOS_NODE_ID. Automatically it generates his own 64 bit MAC Address (similar to
0x4E00000021AC75E2)
However, i want set the extended address with known value, for that i’ve done:
make micaz extaddr.1234 install mib520,/dev/ttyUSB0
But it doesn’t work. The MAC Address doesn’t take the value of 0x1234. Why?
Thank you very much. Your help is very useful for me.
-----Mensaje original-----
From: Jan Hauer
Sent: Monday, July 30, 2012 11:58 AM
To: Felipe Cruz Martínez
Cc: TinyOS HELP
Subject: Re: [Tinyos-help] Always the same 64 bit address
Hi Felipe,
the supported platforms don't have a unique 15.4 extended address (in
a dedicated chip). But you can set the extended address yourself with
the "extaddr" make option, e.g. to set the address to 1234 on telosb,
do "make telosb extaddr.1234 install" (IIRC max 32-bit values work).
Alternatively, if you don't set the ext. address yourself, then by
default the MAC sets it to a number returned by the random number
generator (tos/system/RandomC). Under telosb the seed of the RNG is
(only) based on node ID, which you can influence by "install.x" (where
x is the nodeID, 1 is default); unless you do this seed/extended
address will always be the same.
Jan
On Mon, Jul 30, 2012 at 1:03 AM, Felipe Cruz Martínez
<[email protected]> wrote:
> Hi,
>
> i have installed the app TestAssociate located in
> ../tinyos-2.1.1/apps/tests/tkn154/nonbeacon-enabled and i’ve got the
> following problem:
>
> In the coordinator app, when MLME_ASSOCIATE.indication is signaled
> (indicating that a new association request has arrived), i print the
> extended address value (64 bits) of the new device that wishes associate to
> the coordinator. I don’t understand why that address is ALWAYS the same,
> never changes for new associations requests from other devices.
> The extended address is the same for all the devices: 0x4E00000021AC75E2 (64
> bits).
>
> Any help would be appreciated.
>
> Thanks in advance,
> Felipe
>
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