Hi,
For Java on motes, you might want to look at:
- Sun SPOT: http://www.sunspotworld.com/
- IBM Mote Runner: http://www.zurich.ibm.com/moterunner/
Cheers,
Urs
On 02/10/2013 04:52 PM, idrees hussein wrote:
I am newbie student in the field of sensor nodes, I am wondering if it
is possible to
Hi,
I don't think you can simulate the Sht11 with TOSSIM. As far as I
remember, in TinyOS 2.x you can only simulate the micaz, which doesn't
have the Sht11. The command make telosa works because it compiles the
code for the TelosA platform, but you won't be able to simulate it with
TOSSIM.
Hi,
1) As far as I know, and unless there were major improvements that were
not discussed on the mailing list, TOSSIM does not support TelosB (yet).
I have extended the Avrora simulator to also simulate the TelosB
platform (at least partially, but including some sensors and the radio
/2012 09:16 AM, Anandghan W wrote:
Hi Urs,
Which simulator should i use since there is no standard simulator
? It is necessary for me to simulate the code . I found a simulator
Wsim http://wsim.gforge.inria.fr/tutorial.html , have you worked on it?
On Tue, Oct 2, 2012 at 12:25 PM, Urs
(copy for mailing list without attachment, as it is too big for the
mailing list)
Hi Lukas,
I've implemented preliminary support for TelosB in Avrora. As far as I
know it has not been integrated into the official version. I haven't
worked on it for quite a while, so I am not sure what does
Hi,
I have an experimental extension of the Avrora hardware simulator to
support the TelosB platform. Why do you need to simulate TelosB?
Cheers,
Urs
On 12/22/2011 01:13 AM, Tao Zheng wrote:
And is there any simulation tools supporting telosb platform?
Thanks
-Original Message-
Hi,
I remember getting values close to 0 ( 50) when it is dark and values
just slightly greater than 1000 when it is very bright (without any
conversion). If your values don't change much, I think there is a
problem with the sensor. You should see a clear drop (50%?) when you
cover the light
Hi,
Thanks for the detailed explanation why you posted off list. I think the
list server is having a problem.
Could you program the TestSerial test application on the mote, and then
try the following command on Ubuntu?
screen /dev/ttyUSB0 115200
This would just open the serial port and show
Hi David,
If I have a tmote sky mote (telosb), then:
1. How much storage space is there in flash?
1 MB in the external (i.e., not on the microcontroller, but on the PCB)
flash. If I remember correctly, this is actually 1024*1024 bytes.
Hi,
There is a tutorial for this:
http://docs.tinyos.net/tinywiki/index.php/TOSSIM
Cheers,
Urs
On 11/17/11 8:04 AM, Shaloo Dadwal wrote:
Sir,
Please help me in writing and running nesC codes on TOSSIM version 2.x.
thank you
___
Tinyos-help
Hi,
There is a document about an adapter that you can build. Essentially,
you can get the hardware to communicate, but you would have to adapt the
software by yourself.
http://www.tinyos.net/hardware/telos/telos-legacy-adapter.pdf
Cheers,
Urs
On 11/18/11 5:12 AM, Rakshitha GB wrote:
hi
it with make command.
Thank You
On Fri, Nov 18, 2011 at 3:08 PM, Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke...@epfl.ch wrote:
Hi,
There is a tutorial for this:
http://docs.tinyos.net/tinywiki/index.php/TOSSIM
Cheers,
Urs
On 11/17/11 8:04 AM, Shaloo Dadwal
it works if you install when are in
two different application, do the new one erase the previous one ?
make telosb install,1
make telos reinstall,2
is used in the tutorial and I don't understand the difference.
Thank you for you help once again.
On Wed, Nov 16, 2011 at 1:48 AM, Urs Hunkeler
to combine a lot of
applications I need to put them in the same directory with the
makefile rules which fits to get one unique source code ?
On Wed, Nov 16, 2011 at 8:29 AM, Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke...@epfl.ch wrote:
Hi again :-),
make install compiles
Hi,
It looks like the TinyOS Java libraries are not in your classpath. There
should be a tinyos.jar file somewhere, and the CLASSPATH environmental
variable should point to it.
You can try something like:
export CLASSPATH=.:$TOSROOT/support/sdk/java/tinyos.jar
java net.tinyos.tools.Listen
for the help.
On Tue, Nov 15, 2011 at 2:10 AM, Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke...@epfl.ch wrote:
Hi,
It looks like the TinyOS Java libraries are not in your classpath.
There
should be a tinyos.jar file somewhere, and the CLASSPATH environmental
variable
Hi,
Sorry, I have never worked with C# or .NET.
Cheers,
Urs
On 11/10/11 3:19 PM, i080253 Ahsan Javed wrote:
Hi,
I was searching net for telosb to .NET serial communication. i
came across an archive where you performed serial communication. Can you
tell me how you import tinyos.jar library
Hi,
Sorry, I have never worked with C# or .NET.
Cheers,
Urs
On 11/10/11 3:19 PM, i080253 Ahsan Javed wrote:
Hi,
I was searching net for telosb to .NET serial communication. i
came across an archive where you performed serial communication. Can you
tell me how you import tinyos.jar library
know if I am doing something wrong.
Thanks Regards,
Jenis
-Original Message-
From: tinyos-help-boun...@millennium.berkeley.edu
[mailto:tinyos-help-boun...@millennium.berkeley.edu] On Behalf Of Urs Hunkeler
Sent: Friday, November 04, 2011 12:10 AM
To: tinyos-help
Hi,
To answer your second question: I don't know how you could do this with
TOSSIM. Avrora simulates the hardware devices and allows you to create
virtual serial ports to which you can connect your back-end applications
with the user interface.
http://compilers.cs.ucla.edu/avrora/
Hi,
The formula in the internal temperature sensor module might refer to the
value you'd get when sampling the temperature sensor internal to the
msp430 microcontroller. For the two SHT11 formulas, I have no idea what
the second formula refers to, the first one seems to be the one from the
Hi
TOSSIM doesn't have the memory limitations of real WSN hardware, so you
could write a single big application that contains the code for both the
special cluster and the rest of the WSN. You then activate one or the
other code in a simple if() statement testing the nodeID of the motes.
Hi Jenis,
From what I read I think you are using the MIB600 programming board
originally from Crossbow?
The connection-refused message means that the program tried to establish
a TCP connection to the given IP address and port number, and the device
refused it. Maybe the programming of the
Hi Ashish,
When executing a process from Java, the process is executed as a binary,
or at least without any environmental variables set. You could run the
shell program (e.g., /bin/bash) with the script to execute as an
argument. In addition, you might want to use absolute paths for the
Hi Amit,
Please don't contact people directly, send your messages to the mailing
list.
The description of the problem that you have given is not accurate
enough to really claim that your problem is similar to problems I might
have had in the past. Which hardware are you using? Do you check
Hi Salahadin,
Depending on your needs you might also be interested in Avrora:
http://compilers.cs.ucla.edu/avrora/
Avrora is a Mote hardware simulator written in Java and simulates the
behavior of the actual hardware (thus it also runs applications written
with a different framework than
Hi Luís,
These are interesting findings. I don't think it is a problem related to
Java as a language. It appears to me that the microcontroller is reset
as soon as the serial port is opened. Maybe the Java programs that you
have tried set some handshaking lines that cause a reset.
If you look
I?
Well I could make some C/C++ program to do what I want.
Luís Pereira
On Thu, Oct 27, 2011 at 07:39, Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke...@epfl.ch wrote:
Hi Luís,
These are interesting findings. I don't think it is a problem
related to
Java
Hi Luís,
The FTDI drivers actually only create one serial port (the others were
probably thinking of the X-Bow MIB520 programming boards for the
Mica-series of motes).
The telosa platform is distinct from the telosb / tmote platform. If you
really have a telosa platform, maybe you could try
Hi Luís,
I just had a look. It appears that telosa, telosb and tmote all use the
same baud rate, and that the platform name for telosa on TinyOS is just
telos (not tmote).
TelosA and TelosB/Tmote are similar, but not identical. It is entirely
possible that if you compile your programs for the
Hi,
TinyOS is based on C. Java is only used on the back-end (e.g.,
computer). With TinyOS you cannot use Java on the sensor platforms
(e.g., motes) themselves. If you are interested in using Java on the
sensor nodes, you might want to look into IBM's moterunner project:
Hi Marios,
Have you asked in the Sixxs forums? I don't see why Sixxs would need to
be able to ping your hosts on the IPv4 network. As long as your
IPv6-tunnel agent (aiccu) is receiving and answering the server's
replies, it should work. Sixxs is indeed pinging your end-point, but, as
far as
Hi Nihsad,
Unfortunately, I am not a specialist for time synchronization. I am sure
there are people much more experienced in this area on the mailing list
(which is why it's always a good idea to send messages to the mailing list).
I can only point you to the PacketTimeStamp interface
Hi,
Have you looked at the tutorials?
http://docs.tinyos.net/tinywiki/index.php/TinyOS_Tutorials
In my opinion, the tutorials are very well done to get you started
actually using TinyOS to program real devices. To actually do the tasks
described in the tutorials, you'll also need to install
Hi Rodrigo,
You would need to compile the tools in $TOSROOT/tools directory. If I
remember correctly, this directory is not installed by default on
Windows. You can find the contents of this directory in the subversion
repository.
I am not too familiar with Windows and I have never worked on
Hi,
Why do you want to write to a text file? TinyOS on embedded sensor
hardware currently does not really support file systems. You might want
to have a look at writing to Flash:
http://docs.tinyos.net/tinywiki/index.php/Storage
Cheers,
Urs
On 7/5/11 11:02 AM, Akila Kiki wrote:
Hi, I want
list about how others would
implement this.
Cheers,
Urs
On 7/5/11 12:13 PM, Akila Kiki wrote:
what do you want to say by writing to flash,can you give me some
explanation,
have you documentation about mobility models;thank you
--- En date de : *Mar 5.7.11, Urs Hunkeler /urs.hunke...@epfl.ch
Hi,
Not all functionality can be implemented in Java, and in TinyOS access
to operating system variables (getenv) and to the serial port (toscomm)
are implemented as native libraries. Why getenv is necessary, I don't
know. In any case, if you do not want to install the TinyOS environment,
you
Hi,
Use the VoltageC component:
components new VoltageC();
It offers a Readuint16_t interface. The calculate the actual voltage,
divide the value by 4096 and multiply by 3. E.g., if the read(..) event
gives you the value rawVolt: realVolt = rawVolt * 3 / 4096.
Cheers,
Urs
On 04/05/2011
Hi Rafelia,
Which of the approaches in the many posts on this list have you tried?
What operating system are you using? Which tutorial did you follow when
installing TinyOS? What is the output from the following commands on
your system (when you type them in a terminal)?
echo $CLASSPATH
java
Hi Yusnaidi,
Thanks for the information. The approach that I am suggesting is not
very clean, normally it would be better to try to fix the problems that
you are having, but since my PowerBook is too old for the newest Mac OS
X, I cannot reproduce your errors or compare with my system.
I
Hi Rafelia,
This was the output I was looking for. It says that you have installed
the TinyOS Java native libraries just fine and they are loading ok.
Now we have to figure out why it's not working when you try to run the
TestSerial application. It could be that somehow there are different
and
libgetenv.jnilib. Is this is what I should do? Then, where can I copy
them? because when I issue command tos-locate-jre --jni, I got ths
error: -bash: tos-locate-jre: command not found. How can I solve this?
Many thanks for your kind help.
Yusnaidi
On Thu, Mar 24, 2011 at 4:44 PM, Urs Hunkeler
or directory. What that suppose to mean?
Thanks.
Yusnaidi.
On Fri, Mar 25, 2011 at 10:45 AM, Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke...@epfl.ch wrote:
Hi Yusnaidi,
You need to add the tinyos.jar file in the class path. If you do not
specify the .jar file, Java
Hi Yusnaidi,
Yes, you should have nesc installed. And yes, this probably means there
is a problem with the installation somewhere.
On my Mac the ncc binary is in /stow/bin. If it's not there, check
whether the compiled version is in /stow/repository/nesc-1.3.0/bin. If
it's not there, then
. Is there any other files or system wide files I need
to change so the environment variables takes effect?
thank you...
Yusnaidi
On Fri, Mar 25, 2011 at 4:00 PM, Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke...@epfl.ch wrote:
Hi Yusnaidi,
Yes, you should have nesc
Hi Yusnaidi,
I don't know about your problem, as I currently don't have a Mac OS X
system with the latest OS to play with. However, I did compile the
libraries for different systems, and the libraries included in the
latest tinyos.jar should support Mac OS X on PPC, Intel 32-bit and Intel
Hi,
Unless you need to be compatible with older versions of Java you do not
need to compile for version 1.4 (simply remove the -target and -source
options).
How did you install TinyOS? Clearly, your installation seems to be
missing some files for the TinyOS Java libraries and tinyos.jar seems
Hi Parisa,
I'm not aware of a simulator for the shimmer platform. I have added
support for the TelosB platform to the Avrora project. As they have some
hardware in common (cc2420, msp430), maybe you can take this as a basis
and add/modify the things you need and which are specific to the
Hi Sofia,
Have you tried to use the Int1 interface provided by the
HplAtm128InterruptC component? This might not be the recommended way (I
think you should not use Hpl* components), but I think it works much
better than trying to access the interrupt vectors directly.
Cheers,
Urs
On
Hi,
Try CFLAGS=-DTOSH_DATA_LENGTH=102 make micaz (btw, you need to
recompile an application for the modification of the message length to
take effect, reinstalling it won't change the program)
Cheers,
Urs
On 1/26/11 2:14 PM, laptop...@gmx.de wrote:
Hallo together,
here comes perhaps a quit
Hi,
I'm currently implementing the TelosB platform on the Avrora simulator.
Their code for the radio simulation makes it difficult to trigger
interrupts when the channel becomes clear. From my current work I can
tell that the TinyOS 2.x code on the TelosB waits for an interrupt when
turning
Hi,
Usually, that's more like a problem with a version mismatch of Java
itself. It's even possible that you compile your programs with one
version and try to run it with a different version.
Are you running Linux or Windows? Which version?
What versions of javac and java do you have? (javac
,i am very new in this field, as i dont have any background on
computer science.
On Mon, Jan 17, 2011 at 12:11 AM, Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke...@epfl.ch wrote:
Hi,
Usually, that's more like a problem with a version mismatch of Java
itself. It's even
Hi Loïc,
If you use a high-level protocol there might be some support there,
otherwise you'll have to implement splitting the message yourself.
Cheers,
Urs
On 01/17/2011 10:09 AM, Pfister Loic wrote:
Hi,
I need to send a message of 2560 bits -- 320 bytes.
From what I read in the mailing
which is 1.5, as the tinyos only for 1.4 and 1.5.
On Mon, Jan 17, 2011 at 5:20 PM, Urs Hunkeler
urs.hunke...@epfl.ch mailto:urs.hunke...@epfl.ch wrote:
Hi,
Please try to run the commands on the command line to find the
version that is actually used (as stated
Hi,
I don't know what version is recommended, but mine here is 4.1.2. Maybe
you should update :-)
Cheers,
Urs
On 01/12/2011 09:12 AM, trilok i wrote:
Hi ,
Yes, I am using linux and my avr-gcc version is 3.4.3
Date: Tue, 11 Jan 2011 22:22:09 +0100
Subject: Re: [Tinyos-help]
Hi,
The library file should be called libgetenv.so on Linux. Which operating
system are you using?
The TinyOS Java libraries in the SVN repository contain the native
libraries for the most common operating systems (Linux, Mac, Windows)
and no additional installation is necessary. If you don't
Hi,
I'm not familiar with this problem. The error message might mean that
the serial port is already in use. Is there anything already accessing
the serial port? Maybe you have another program trying to communicate
with the same mote at the same time?
You could try to see whether the serial
Hi,
The reason you did not get any answer from me is that I simply don't
know. I am not very familiar with TOSSIM (and certainly not Python), and
I don't even use Windows (I use Mac and GNU/Linux).
Instead of TOSSIM you could try Avrora. The documentation is a bit
outdated and I recommend you
Hi,
Sorry, your error messages appear with what looks like Chinese symbols,
which I don't understand. Therefore I really have no idea what the error is.
Cheers,
Urs
On 12/13/2010 03:41 AM, hongliping7123 wrote:
Yes, I have change the CLASSPATH as you said, and when I type the
command *echo
Hi,
I don't actually know what happens there, I've never had any similar
problems. From the expression multi-byte character I would guess it
has to do with unicode. Do you use any extended character sets for your
default environment (e.g., is the system language something else than
English)?
Hi,
The Java libraries have some problems compiling on a clean system. Is
there a precompiled tinyos.jar file in your directory
(/opt/tinyos-2.x/support/sdk/java/tinyos.jar)? If so, you could try to
change your classpath to this directory. Your classpath should also
include the current
Hi,
My bad, I mixed CCA (clear channel assessment) up with random back-off
time. I think that the original question was rather about the random
back-off time (used for the CSMA in the default MAC protocol used by
TinyOS), during which (please correct me if I'm wrong here) the channel
is
Hi Miklos,
Thanks for the clarification.
Cheers,
Urs
On 12/09/2010 09:50 AM, Miklos Maroti wrote:
Hi Urs,
During the random back-off time we do nothing. After the timer
expires, then we do CCA and if the channel is free, then we send the
message. If the channel is busy, then we go another
Hi,
It depends on the type of radio you use. E.g., with the CC2420 (MicaZ,
TelosB) there is a CC2420Packet interface which has a function called
setPower(..). With the RF230 (Iris) the RF230ActiveMessageC component
offers an interface of type PacketField called PacketTransmitPower which
From my tests on a TelosB (CC2420 radio) it varies linearly between 1ms
and 10ms (when the channel is free, in principle the radio is already in
receive mode while the message is being copied to the radio's memory,
but I don't think this is used as the CCA). The duration on an Iris mote
Hi,
If you installed Moteworks, you're using TinyOS 1.x. I don't know how to
determine the exact version, but in any case it might well be a special
version provided by Crossbow.
Cheers,
Urs
On 12/09/2010 04:48 AM, SHIVASANKAR GANESAN wrote:
Hi
How to find TinyOS version.
I installed
Hi,
This means that the TinyOS Java libraries are not found. Maybe the
classpath is not set correctly, or the libraries are not compiled.
Usually, the libraries are in $TOSROOT/support/sdk/java/ or
$TOSROOT/support/sdk/java/tinyos.jar (you can use either).
What is the output of the command
Hi,
I think your two questions might be related. I had a similar problem
once where it turned out that the ACKs were received too late. In my
case it helped to enable hardware acknowledgments. You can try this by
adding the following line to your Makefile:
CFLAGS+=-DCC2420_HW_ACKNOWLEDGEMENTS
Hi,
I'm not too familiar with TOSSIM myself, but I think it should all be
explained in the tutorials:
http://docs.tinyos.net/index.php/TOSSIM
Cheers,
Urs
On 12/09/2010 08:18 AM, niraj nake wrote:
Hello all,
I jst want to run blink application using tossim simulator...
on ubuntu 10.1
I hv
, SHIVASANKAR GANESAN wrote:
Hi
That module is not available in my system.I searched my system.What to do.
**
*With regards*
*Sivasankar*
--- On *Tue, 7/12/10, Urs Hunkeler /urs.hunke...@epfl.ch/* wrote:
From: Urs Hunkeler urs.hunke...@epfl.ch
Subject: Re: [Tinyos-help] Reg:Std Deviation
Hi Vino,
Have you correctly setup your TinyOS environment (does your shell call
tinyos.sh on launch)? What is the output of:
echo $TOSROOT
Cheers,
Urs
On 12/08/2010 05:30 AM, vino . wrote:
Hi
I'am getting the following error while typing in simple blink application
make micaz
Hi,
You can turn off the radio with the stop() function of the SplitControl
interface provided by AcitveMessageC (and similarly turn the radio on
with the start() function of the same interface). Make sure you do not
enable low-power operation of the radio stack, as otherwise TinyOS will
use
?
Regards
06 Aralık 2010 08:52 tarihinde Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke...@epfl.ch yazdı:
Hi,
The Avrora project does cycle-accurate simulations of programs
running on MicaZ and should give you a good estimation of the power
consumption of your programs
wrote:
Hi
I can't find CC2420ControlC file in my system,I have only CC2420Control
file and others(like CC2420RadioC..).
I am using Tiny OS V2.0 with Mote works v2.0F.
*With regards*
*Sivasankar*
--- On *Mon, 6/12/10, Urs Hunkeler /urs.hunke...@epfl.ch/* wrote:
From: Urs Hunkeler
assume there is USARTX0 and UARTRX0 right?
Is there any example which i can refer to?
Thank you so much again!
On Sat, Dec 4, 2010 at 5:33 PM, Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke...@epfl.ch wrote:
Hi Zainab,
If I understand you correctly, you use the default Basestation
about how to maintain a source tree?
Keep everything latest or just hold an everything-looks-fine rev
? I don't want the same situation
to come up again.
At last but not least, thanks again.
Best Regards.
Ruitao Xu
2010/12/3 Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke
Noise.
**
*With regards*
*Sivasankar*
--- On *Fri, 3/12/10, Urs Hunkeler /urs.hunke...@epfl.ch/* wrote:
From: Urs Hunkeler urs.hunke...@epfl.ch
Subject: Re: [Tinyos-help] Reg:Std Deviation of Gaussian Noise
To: SHIVASANKAR GANESAN tata...@yahoo.co.in
Cc: tinyos-help
Hi,
The Avrora project does cycle-accurate simulations of programs running
on MicaZ and should give you a good estimation of the power consumption
of your programs.
http://compilers.cs.ucla.edu/avrora/
If you want to do your own measurements, I think both Avrora and
PowerTOSSIM did
Hi,
make pc was for TinyOS 1.x, in TinyOS 2.x it is make micaz sim.
I recommend reading the documentation for TOSSIM in TinyOS 2.x, as quite
a view things have changed:
http://docs.tinyos.net/index.php/TOSSIM
Cheers,
Urs
On 12/4/10 12:37 PM, Edel A. Rodriguez Sanchez wrote:
Hi.!
I have
It's been a long time since I last did anything in TinyOS 1.x. The
TOS_Msg structure has an element called ack (of type uint8_t). Maybe
this is a boolean that will be set to something different from 0 if an
ack has been received? In TinyOS 2.x sendDone is only called once an Ack
has been
in. I'm not sure how to do that?
Any help would be great!
On Sat, Dec 4, 2010 at 2:27 AM, Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke...@epfl.ch wrote:
Hi Zainab,
If I understand your description correctly (sorry, I am not too
familiar with the BaseStation application
Hi Francesco,
At a quick glance your calculations appear to be correct. If the effort
is small to change the resistors, it's worth a try.
I also have been thinking, and maybe the simple model of the battery is
not enough to explain the phenomenon you see. I suspect that the
microcontroller
. The
horrible situation remains.
Thanks for your help.
Looking forward to any tip.
I will try more solution and expect mote receiving correctly earlier.
Best Regards,
Ruitao Xu
On Fri, Dec 3, 2010 at 2:07 PM, Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke...@epfl.ch wrote:
Hi
Hi Francesco,
Thanks for detailing your measurement setup. From the pictures I don't
see any additional circuit for your sensors. Do you use an internal
sensor? If not, do you have the problems when reading ADC values without
anything connected and you expect it to be constant (since nothing
Hi,
The CC2420ControlC has a ReadRssi interface, which allows you to read
the RSSI while not actively receiving any message. You could sample the
background noise for a while, and then use standard statistical methods
to determine the noise level and the standard deviation.
Cheers,
Urs
On
We managed to get more than 100m outdoors with special antennas (normal
antennas for WiFi routers).
Cheers,
Urs
On 12/03/2010 08:07 AM, Manjunath Doddavenkatappa wrote:
It depends on the environmemt. In typical indoor setups, it is less than
10m.
We have observed in indoors that although
(); # when receiving, just toggle led0*
}
return msg;
}
On Fri, Dec 3, 2010 at 4:25 PM, Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke...@epfl.ch wrote:
Hi,
This gets difficult to debug. Here are just a couple of ideas:
Do you use different NodeIDs for the different
SendingMote and ReceivingMote code.
There is only one difference between SendingMote and RecevingMote:
whether call send command when radio start successfully.
Best Regards,
Ruitao Xu
在 2010年12月3日 下午5:11，Urs Hunkeler urs.hunke...@epfl.ch
mailto:urs.hunke...@epfl.ch写道：
Hi
Hi Francesco,
The potentiometer (probably used as a voltage divider?) might amount for
up to (3V / 450 Ohm =) ~6mA, not that much but it's already on the order
of the power consumption of the microcontroller. If the total power
consumption for sampling the sensors is around 10mA and the
Hi Francesco,
You could measure the voltage of the batteries and use this value in
your further calculations (I think VoltageC gives you the current voltage).
It might be possible that some batteries have a higher internal
resistance than others. If your sensors draw a lot of power, this could
Hi Biyan,
Is there a file called Packetizer.java in your
/opt/tinyos-2.x/support/sdk/java/net/tinyos/packet directory? If it's
missing, your source tree is not complete. If it's there, maybe Java
won't find it because it searches for it in a path it constructs based
on the package name. Why
Hi,
I have not tried ftsp myself, so this is just a guess from looking at
the code. I think this is a library and not a stand-alone program. You
need to write your own program that uses time synchronization. Your
program needs to wire the MainC component to TimeSyncC (Boot and Init
Hi Zainab,
If I understand your description correctly (sorry, I am not too familiar
with the BaseStation application), the LEDs indicate that one
BaseStation is sending packets, but the other is not receiving them. In
that case I don't think this is a problem with the baud rate. Maybe
there
Hi Francesco,
You could measure the voltage of the batteries and use this value in
your further calculations (I think VoltageC gives you the current voltage).
It might be possible that some batteries have a higher internal
resistance than others. If your sensors draw a lot of power, this could
Hi,
One problem that I encountered personally is that sometimes the Moteiv
Tmote Skys seem to have difficulties communicating when they are too
close together (maybe the receiver gets saturated?). If this is the
case, I found that lowering the transmission power helps. You can try
this by
Hi Francesco and Krisa,
A battery is usually modeled as a perfect voltage source in series with
an internal resistor. (I hope the link works)
http://books.google.ch/books?id=bkOMDgwFA28Clpg=PA9ots=F2hgSHc2Ptpg=PA9#v=onepageqf=false
When the load (power draw by the mote and the sensors)
Hi,
If I can predictably repeat an error, I usually use the LEDs to find out
where the code crashes.
It often also helps to disable parts of the code or replace parts with
dummy code (e.g., instead of reading a sensor just use a constant), and
try to find the part of the code that is
Hi,
I have a couple of Mica2 (and Mica2Dot) motes and I wanted to use them
for some experiments, but somehow radio communication doesn't seem to
work. Is there anything special you need to do with the CC1000 radio?
Here's the simple test program I used. It works on TelosB and TinyNode,
but
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