This should help:
http://www.octavetech.com/pubs/TB5-01%20Deciphering%20TinyOS%20Serial%20Packets.pdf
but don't ask me again because I loose the link everytime I look for it...
Basically you are looking at tos/types/AM.h with tos/lib/Counters/IntMsg.h
embeded in the data field. It's all part of the special knowledge you will
be granted when you have banged your head on TOS for an appropriate length
of time.
Congratulations on getting the sf and Listen to work though.
MS
Paul David Kavan wrote:
Hello all:
I am just getting started with my TelosB motes and have a basic network
up and running right now. I have a question about what I am seeing
coming over the serial port I am hoping someone might be able to clear up.
I have one mote with Node ID 7 programmed with the 'CntToLedsAndRfm'
program. I have another mote with Node ID 1 programmed with the
'TOSBase' program connected to my PowerBook via USB.
I then invoke the Serial Forwarder with:
./sf 9001 /dev/tty.usbserial-XBOQ1YGI 57600 telos &
and then listen with:
./sflisten localhost 9001
I receive the following:
[EMAIL PROTECTED] % ./sflisten localhost 9001
clients 1, read 83, wrote 0
04 01 08 55 ff ff ff ff 04 7d 55 02 03 00
04 01 08 56 ff ff ff ff 04 7d 56 02 03 00
04 01 08 57 ff ff ff ff 04 7d 57 02 03 00
04 01 08 58 ff ff ff ff 04 7d 58 02 03 00
04 01 08 59 ff ff ff ff 04 7d 59 02 03 00
04 01 08 5a ff ff ff ff 04 7d 5a 02 03 00
04 01 08 5b ff ff ff ff 04 7d 5b 02 03 00
04 01 08 5c ff ff ff ff 04 7d 5c 02 03 00
04 01 08 5d ff ff ff ff 04 7d 5d 02 03 00
.
. <Cut to see the rollover>
.
04 01 08 f9 ff ff ff ff 04 7d f9 00 07 00
04 01 08 fa ff ff ff ff 04 7d fa 00 07 00
04 01 08 fb ff ff ff ff 04 7d fb 00 07 00
04 01 08 fc ff ff ff ff 04 7d fc 00 07 00
04 01 08 fd ff ff ff ff 04 7d fd 00 07 00
04 01 08 fe ff ff ff ff 04 7d fe 00 07 00
04 01 08 ff ff ff ff ff 04 7d ff 00 07 00
04 01 08 00 ff ff ff ff 04 7d 00 01 07 00
04 01 08 01 ff ff ff ff 04 7d 01 01 07 00
04 01 08 02 ff ff ff ff 04 7d 02 01 07 00
I believe I know what some of the bytes are, but not all of them.
Through experimentation, I think that byte 13 is the Node ID of the
transmitting device. It also seems that bytes 4 and 11 are counting--and
the sent message is a counter. So they might represent the message or
some internal counter of messages?
Does anyone have a definitive idea of the bytes? I have looked at the
.nc files for TOSBase, but am still learning this a little, so I am not
sure what I am looking for
Thanks.
Paul
*****************************************
Paul David Kavan
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
329 Walter Scott Engineering Center
University of Nebraska
402-472-2764
*****************************************
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