anyone know where am_id_t is defined or it is a built-in type in nesC?
On Fri, Oct 5, 2012 at 3:00 PM, tinyos-help-requ...@millennium.berkeley.edu
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giving meaningful output but keeps printing
bad packets. To make it back to work I had to either replug the mote
or re-program it. Could anyone give me some hint on the cause of the
problem? Thanks very much.
Best regards,
Peng
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Hello everyone,
The cc2420 data sheet states its RSSI accuracy is -6 to +6 dBm. Does the
range represent, e.g. the 95% confidence interval obtained during hardware
test, or the standard deviation? I am really interested in finding out what
it really represents.
Thanks very much and any input
Hi all,
I'm working on the telosb mote using T2.1.0 and I accidentally found that
sometimes the RXFIFO.readDone() event would not be triggered after
calling call RXFIFO.continueRead or RXFIFO.beginRead. (in CC2420ReceiveP.nc)
Once FIFOP goes low, and the radio state is not S_STARTED, the
lost
,
Peng
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Thanks you all for the replies.
Another question: I know a node performs clear channel listening
before sending packets - is the result depend on the channel it is
using or traffic on any channel will make the node to back off?
Regards,
Peng
On 15 June 2011 17:12, Jan Hauer ha...@tkn.tu
Hi everyone,
A quick question: are the bitwise operators in tinyOS the same with
the c ones? e.g. for bitwise AND and ~for NOT.
Thanks a lot.
Regards,
Peng
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() is the only way to make the RSSI valid? And if it
is not called, does it also mean the node can't received anything?
Thanks a lot in advance.
Regards,
Peng
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Rate)?
I would guess channel with lower noise floor should be more
preferable. But does anyone have any opinion or could point me to some
useful resource that explains this?
Thanks very much!
Best regards,
Peng
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are sending/receiving. I guess it could be called environment
interference, if noise floor is too ambiguous a name.
So do you think this is a feasible method?
Regards,
Peng
On 31 May 2011 23:37, Sergio Valcarcel serteck...@gmail.com wrote:
Hi Peng,
For a given bandwidth, the capacity of a channel
. Would anyone shed some
light on me? Thanks very much !
Regards,
Peng
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Hello.
The datasheet of cc2420 states the sensitivity threshold is -94dBm. But when
doing noise floor listening (for example the RssiToSerial application under
apps/test/cc2420) the reading is usually around -110. So are these readings
valid?
Many thanks.
Regards,
Peng
, it'd be great if anyone would be able to give a general idea about
how fast the RSSI is sampled.
Thanks very much.
Best regards,
Peng
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Hello everyone.
I have a rather general question: How the quality of a channel can be
assessed (in the context of tinyos, probably RSSI)?
Best regards,
Peng
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Hi there.
I know the sensitivity threshold for CC2420 is -94dbm, but am wondering if
there is a reasonable threshold value so that when RSSI reaches it, the
channel is considered not a suitable for carrying out a communication?
Many thanks.
Best regards,
Peng
it straight away in ur main configuration file, and adding some
clear comments would do it, too.
On Wed, Aug 4, 2010 at 1:05 PM, Peng Du eddy@gmail.com wrote:
Thanks very much for your reply.
I am curious that why it is necessary to create my own configuration file?
Can't I simply call
.
Peng
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Hi.
Is the RSSI value in RSSI.RSSI_VAL register only updated when a message is
received?
Many thanks.
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Hello everyone,
Is there anyway to let a sensor overhear nearby communications so that it
can estimate the crowdedness of the channel?
Many thanks!
Peng
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the packets.
ActiveMessage layer uses this component for receiving packets may filter
messages.
This low component (low = sit very close to the radio) can hear all the
packets, packets targeted for other nodes, broadcast messages etc.
On Tue, Jul 27, 2010 at 3:23 PM, Peng Du eddy@gmail.com
];
}
}
2010/7/27 Peng Du eddy@gmail.com
Thank you all very much.
To Zied: did you mean using AMSnooperC?
To Obaid: Is there any kind of standard interfaces to identify the types
and the data rate of traffic it overhears?
On 27 July 2010 14:41, Obaid Salikeen obaidsalik...@gmail.com
Hello.
Is there anyway to detect the energy level (and probably the level of
utilisation) in a certain channel without reading the RSSI values from the
packets exchange?
Thanks a lot.
Peng
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Many thanks Michael,
I searched your posts and is the link below correct? Because I haven't been
able to open it.
http://www.etantdonnes.com/Motes/schipTOS.zip
Best,
Peng
On 17 July 2010 23:14, Michael Schippling sc...@santafe.edu wrote:
I implemented a no-ACK retry mechanism with message
they make no
response; while some other time the ACKs never reach the BaseStation so the
whole system just hangs there and won't progress.
Thanks very much.
Peng
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Hello everyone.
As the title says, how is the Rssi reading captured using, for example, the
Rssi Demo application in the tutorial supposed to be interpreted into
meaningful values?
Thanks very much.
Peng
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Hi.
I would like to let the BaseStation periodically changes its channel and
keep the communication with nearby motes (assuming the number and ID of
these motes are known). How can I use the Dissemination protocol to let the
BaseStation know every other motes are ready to change the channel
I do:
event A{
call
switch (...) {
case m:
break;
case n:
event B{
call
}
}
Thanks very much in advance.
Peng
---End Message
Hello all,
I am looking at the IPBaseStation application.
Since driver under $TOSROOT/support/sdk/c/blip/
driver (specifically serial_tun.c) allows the channel to be changed
dynamically, is there any way that I can inform the motes about change?
P.S. someone suggested that I should write a
());
bufferPointer = signal Receive.receive[call
AMPacket.type(bufferPointer)]
(bufferPointer, payload, len);
}
--
Yang Peng
Ph.D. Candidate
Department of Computer Science
Iowa State University
http://www.cs.iastate.edu/~ypeng
Hello all,
I am looking at the IPBaseStation application.
Since driver under $TOSROOT/support/sdk/c/blip/driver (specifically
serial_tun.c) allows the channel to be changed dynamically, is there any way
that I can inform the motes about change?
Many thanks.
Hi all,
Is it possible to simulate low power listening in tossim under T2?
It seems like lpl implementation in T2 only works for testbed, please
correct me if I'm wrong :)
Or does someone has a beta version of low power listening component for T2's
tossim? I would be very happy to help you
Dear all,
This might sound naive - how to send parameters, say channels, to the motes
that are not plugged to the desktop? Would something like the IPBaseStation
provided with tinyOS do the job?
Many thanks!
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? Many thanks.
Best regards,
Peng
This message was sent using IMP, the Internet Messaging Program.
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and exactly do here?
2.
How can I specify the device ID? Because after I programmed both motes
at USB1 and USB2, I end up having 2 motes with the same ID (and hence
same IPv6 address in my case).
Many thanks.
Regards,
Peng
Quoting Kevin Klues klue...@gmail.com:
Th command is make tmote
Hi Arik,
Thanks very much for your explanation.
Peng
Quoting Arik Sapojnik sapoj...@gmail.com:
Peng,
bsl states the port you want to send your bin file to (in oher words which
mote you want to program).
Read here: http://docs.tinyos.net/index.php/Getting_Started_with_TinyOS
Use make
Dear all,
I have two motes attached at /dev/ttyUSB0 and /dev/ttyUSB1 and tinyos
always choose the one at /dev/ttyUSB0 regardless which on I specify in
the commands.
Any ideas what might be the cause? Many thanks.
Best regards,
Peng
whether TOSSIM can only work under python2.5, (at least, in my current
tests, TOSSIM can work well under 2.6), if not, I think it is better for
the python version to be obtained adaptively in these makefiles. What do
you guys think of these issues? Thanks...
Regards
Peng
http://docs.tinyos.net/index.php/TOSSIM
This is a really good link to teach you how to use TOSSIM
Peng
Balaji Palaniswami wrote:
Hi All,
I would like to test CTP and MultihopLQI protocol packet delivery reliability
metric in TOSSIM for micaz architecture.
1)Please show me link to write
) {
**
if (postsignalreceive){
post receiveTask();
}
else {
releasing the current buffer here
}
}
Regards
Peng
Philip Levis wrote:
On Aug 19, 2009, at 10:51 AM, Guillermo De Cesco wrote:
Hi,
I was digging throw the code and I seems that you are rigth
. Moreover, the buffer 0 will never take
the chance to receive any byte, since there will never be buffer
swapping either.
Regards
Peng
Michael Schippling wrote:
Sorry, I'm lost...where is a current buffer and how is it {un}locked?
MS
peter...@cs.utah.edu wrote:
Hi There
In my stressing test, I
, since receiveState.which has been set to 1, but it still
returns the state of buffer zero and vice versa, this is the cause why
buffer 1 can not receive the byte streams.
I am not very sure whether my analysis is right and reasonable, thus I need
your help! Thanks a lot!
Regards
Peng
Peng
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of double buffering and making buffers
swap is to let the serial stack not miss these incoming bytes. Am I right??
Thanks a lot for clarifying!
Regards
Peng
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guys
usually do when you want to store some data when want to survive power cycle
and read after?
sincerely
Peng
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like:
volume_table
volume name=RSSISTORAGE size=32768/
/volume_table
or
volume_table
volume name=CHANGEDNAME size=262144/
/volume_table
Can it read out the previous data?
sincerely
Peng
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guys
usually do when you want to store some data when want to survive power cycle
and read after?
sincerely
Peng
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and Tasklet interface, I do
not understand its function, someone can explain it to me?
sincerely
Peng
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based on the
standard.
Any reply is deeply appreciated.
sincerely yours
Peng
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. I try to find which file to set them, but I
haven't found, someone can give me a clue?
Question3: Is these there filed plus TOSH_DATA_LENGTH equals to the final
packet length? Or we have something else.
Any reply is appreciated
sincerely
Peng
length?
cheers
Peng
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Hi there,
Is here anyone know, whether I can let RF230 not to drop a packet if the CRC
check is not right.
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Hi, there
I'm wondering someone here or know try to look into 802.15.4 link layer
characteristic vs distance and model a routing metric based on that. If
someone know some paper about that could you please send me a link?
Any reply is deeply appreciated.
Thanks
Peng
. Is there
anyone with this idea and look into it? Or someone know there's some paper
about it?
Any reply is appreciated.
sincerely
Peng
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Hi there,
Anyone have Atmel AT45DB041 datasheet?
peng
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to jump 256*30.5 uS each time.
This greatly impact the precision of our time synchronization algorithm.
How can I solve this problem?
Thanks,
Peng Zeng___
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Hi Phil,
I am using TOSSIM to do my simulation, but I met a problem here, the module
I used is TOSSIM-CC2420 under /tinyos-1.x/beta/TOSSIM-CC2420
I use a root to do broadcasting periodly, the interval is 1 second, and
other nodes do retransmission.
I tract down my program and find that after
Hi all,
I am trying to use TOSSIM to do simulation for telosb in tinyos1.x, but I
can not use lossy module to do build multihop topology...
Does anyone use run -rf=yourlossyfile.nss nodeNUM ?
It seems like my lossy.nss file does not work, seems like it is not
read(I use lossyBuilder to
Hi all,
I have a question here about wireless reprogramming in Imote2.
What kind of module does imot2 support? It seems that it cannot support
Deluge, am I right?
Thanks for your kind help,
Yang
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Hi all,
I am working on imote2 development with tinyos1.x now, I am a little
confused about the register definition for PXA27X.
from /opt/tinyos-1.x/beta/platform/pxa27x I got file
pxa27x_registers_def.h (filetos1)
from /opt/tinyos-2.x/tos/chips/pxa27x I got file
pxa27x_registers.h
Hi all,
I have a question about the DAC driver for Tmote sky node.
Can anybody tell me some information about following definition? I cannot
find useful info in msp430 data sheet, neither in the comments for the
driver code.
(I am very appreciated that any nice guy can tell me where to find a
Hi,
Dose anybody meet cycle routing problem when using Multihop as routing engine?
It seems easy tobreak cycle between two nodes, but if the cycleworks between three or more nodes, how tobreak it?
Can anybody give me a hint?
Thank you for your time!
Yang
I am working on Tmote, and I am using the Tinyos 1.11 installed by the wizard downed from tinyos.net .
I justrelpaced the Demosensor component by component InternalVoltageC in Oscilloscope.nc, and changed some connection names in
Oscilloscope.nc and OscilloscopeM.nc .(Those two components in
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