On Apr 28, 2006, at 5:21 PM, Nick wrote:
Hey all!
I would like to ask you some simple questions! :
1) How can I manage to start first a specific mote on TOSSIM? eg. I
would like to boot first the mote 0 and then boot all the others.
You can't in 1.x. TOSSIM in 2.x allows you to control the boot times.
2) How can I see the EEPROM file? I use the main.exe –ef=text.txt
command but I get a 5Mbyte file …empty!!
Have you written anything to the EEPROM? If not, it will be empty.
Also, it's not a text file. It's just the state of the EEPROM stored
in a file. If you application stores binary data, the EEPROM file
will have binary data in it. It's like a loopback file system.
And I also get the following error..
9: Popping event for mote 6 with time 0:0:19.16369425.
SIM: Reading command from client fd 7
SIM: Reading in GuiMsg header of size 14 with length 0
SIM: Closing client socket 7.
[EMAIL PROTECTED]@spoon /opt/tinyos-1.x/apps/BlinkSIM: commandReadThreadFunc:
error in selec
t(): Bad file descriptor
SIM: Reading command from client fd 7
SIM: Reading in GuiMsg header of size 14 with length 0
$ SIM: Closing client socket 7.
(sorry for posting this again)
If the socket closes abruptly, you might see this error. E.g., if you
connect to TOSSIM then disconnect. I assume you're not seeing a big
problem with this?
4) TOSSIM runs code instantaneously… Why a msg from a mote (eg.0)
delays independently to arrive to the motes. I thought the message
should arrive at the same time to all motes but this doesn’t not
seem to happen…
The radio stack works at the bit level. Each node is sampling the
channel at 40kHz to read in data. Those sample times are not
synchronized: two motes might both be sampling at 40kHz but have a
phase difference of 10us. The node receives the packet based on the
interrupt timing. So nodes will receive the packet with very close
but not necessarily identical times.
Phil
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