Happy New Year
Please, regarding the discussion in:
http://www.mail-archive.com/tinyos-help@millennium.berkeley.edu/msg10654.html
I do not see how to use the queue when using different kind of
messages. In this case I think that different instances of AMSend
suits better.
Should I have to us
them.
What do you think?
Thanks!
Sergio
On Mon, Jan 3, 2011 at 7:34 PM, Eric Decker wrote:
>
>
> On Mon, Jan 3, 2011 at 7:49 AM, Sergio Valcarcel
> wrote:
>>
>> Happy New Year
>>
>> Please, regarding the discussion in:
>>
>> http://www.mail-arc
Hi Sivasankar,
this is easy ;-)
There are a bunch of very good tutorials covering all the basic topics.
This one is about radio transmission:
http://docs.tinyos.net/index.php/Mote-mote_radio_communication
Cheers,
Sergio
On Tue, Jan 4, 2011 at 8:15 AM, SHIVASANKAR GANESAN wrote:
> Hi
>
> I n
ueResult.dequeue();
busySerialTx = FALSE;
post serialSend ();
}
Thanks!!!
Sergio
On Mon, Jan 3, 2011 at 9:07 PM, Eric Decker wrote:
>
>
> On Mon, Jan 3, 2011 at 11:45 AM, Sergio Valcarcel
> wrote:
>>
>> Dear Eric,
>>
>
Hi,
not really, you just need to
event message_t * BeaconReceive.receive(message_t *msg, void *payload,
uint8_t len){
uint16_t beaconId;
if ( len == sizeBeacon ) {
atomic {
beaconId = pointerBeacon->beaconId;
pointerBeacon = (BeaconMsg*) payload;
beaconInfo.beaconId = pointerBeacon->beaconId;
be
Hi,
not really, you just need to use the interface CC2420Packet, that is
provided by
component CC2420PacketC.
uses {
interface Receive as BeaconReceive;
interface CC2420Packet as RadioPacket;
}
Then, when you receive the message (in my example is a struct of type
BeaconMsg)
event messag
Hi,
not really, you just need to use the interface CC2420Packet, that is
provided by
component CC2420PacketC.
uses {
interface Receive as BeaconReceive;
interface CC2420Packet as RadioPacket;
}
Then, when you receive the message (in my example is a struct of type
BeaconMsg)
event messag
;
>
> *
> While compiling this file, I am getting error
>
> *"RadioPacket.getRssi not connected"*
> *
> *
> Why it is not connected?.How to solve this error.
>
>**
> *With regards*
> *Sivasankar*
>
>
> --- On *Mon, 10/1/11, Sergio Valcarc
Hi,
when flashing one of our imote2, it does not go beyond "erasing
flash". However, when connecting through openocd the hardware is
properly recognized (see below). Any idea what could I try?
openocd -f interface/olimex-arm-usb-tiny-h.cfg -f board/crossbow_tech_imote2.cfg
Open On-Chip Debugger 0
Hi, I would like to reset imote2 by software.
Do you have any idea how to do that?
Is there any way to set up a watchdog?
Thanks so much!!
Sergio
___
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Hi Pedro,
in another mail-thread there are explained two ways of calling C
functions from a nesC application. Check this:
http://www.mail-archive.com/tinyos-help@millennium.berkeley.edu/msg35149.html
The quick & dirty way is embedding the C function into the nesC file.
I did it and works properly
I forgot to mention that you should #include "source.h" in your
"source.c" as it is obvious ;-)
On Wed, Jan 12, 2011 at 11:30 AM, Sergio Valcarcel wrote:
> Hi Pedro,
>
> in another mail-thread there are explained two ways of calling C
> functions from a nesC
.
> First of all, thank you for your help. However, I did also checked that
> thread and tried it. It didn't work.
> I think I'll just port my C functions to a nesC component.
> Thank you anyway.
> Regards,
> Pedro Nunes
>
> On Wed, Jan 12, 2011 at 10:30 AM, Sergi
ust the way you said and my error message remains:
> "gcc: cannot specify -o with -c or -S with multiple files
> make: *** [sim-exe] Error 1"
> Thank you once again for your help! :)
> Best regards,
> Pedro Nunes
> On Thu, Jan 13, 2011 at 5:14 PM, Sergio Valcarcel
> wr
ergio.
>> > I hadn't done that yet.
>> > But I tried now just the way you said and my error message remains:
>> > "gcc: cannot specify -o with -c or -S with multiple files
>> > make: *** [sim-exe] Error 1"
>> > Thank you once again for your
Hi Yasserz,
You may have a look at the wonderful tutorials available in
http://docs.tinyos.net/index.php/TinyOS_Tutorials
Further this, you can find all the interfaces and how to use them in
the folder interfaces inside the tinyos tree. It is even more
accesible if you use the Yeti2 plugin for Ecl
Hi Ranal,
I am not an expert, but some colleagues from me made many experiments
and I remember they told me that the problem is also in the SPI buffer
which is 128bytes maximum. So if you remove 14 bytes needed for the
header, you can only use 114bytes.
Cheers!
Sergop
On Tue, Jan 18, 2011 at 4:1
Hi,
Do you know any one with an open TinyOS implementation of consensus
and gossip services for distributed computing?
Thanks!
Sergio
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Tinyos-help@millennium.berkeley.edu
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I'd guess the problem may be in your code rather in the CC2420PacketP
module.
Perhaps you could try to compile a minimal program and if you still have the
same problem, then attach the code.
Furthermore, are you using the newest TinyOS version?
Cheers!
Sergio
On Thu, Jan 27, 2011 at 11:51 AM, S
d1Toggle();
>> call Leds.led2Toggle();
>> }
>>
>> Leds should be "on" almost immediately after start of the mote ( to be
>> exact after 1/32768 [s] + small delay for reaction). It is not the case,
>> they are turning on after [!] ~10 second, as if
Hi Lulu,
I assume you are familiar with MIG. If it is not the case you should
have a look at:
http://www.tinyos.net/tinyos-1.x/doc/nesc/mig.html
http://docs.tinyos.net/index.php/Mote-PC_serial_communication_and_SerialForwarder
http://www.tinyos.net/tinyos-1.x/doc/tutorial/lesson6.html
I usually
Hi Minh,
First of all, what version of openocd are you using? You can figure it out
just by launching the command "openocd" with no arguments.
I would strongly recommend to use the last version 4.0, which can be
downloaded from http://openocd.berlios.de/web/
Secondly, you may be using the H versi
ha wrote:
> I use the last version of openocd. The problem is that i use ARM-USB-OCD
> not ARM-USB-TINY. The .cfg file is different. I tried to modified the .cfg
> file but it does not work.
>
> --
> *De :* Sergio Valcarcel
> *À :* minh ha
Yep, you just have to include the array inside the type of message struct.
Also, you can assign structs with = even when their type include an
array (but sometimes it is a bit tricky so use memcpy if you feel more
confortable).
On Wed, Feb 23, 2011 at 8:49 AM, 崔晓宗 wrote:
> you can send the string
Yep, I would say this is the right way fo doing it.
In the case you get a string with "Hello123", obviously you will get
the decimal values of the chars and those of the char numbers so you
always can convert to ASCII.
Furthermore, you can tune your automatically generated JAVA classes
very easil
Hi,
I have no idea on Sentilla platform. Does it run TinyOS?
In the case yes, you only have to use the CC2420Packet interface,
inside module CC2420PacketP.nc, in
/opt/tinyos-2.1.1/tos/chips/cc2420/packet.
And call the commands CC2420Packet.setPower.
Otherwise, I have no idea :-(
Cheers!
Sergio
Regarding the propagation model, it depends on the kind of environment
(e.g. indoor or outdoor, static or mobility, etc.).
Each model has always some free parameters that can be estimated
theoretically or using real data. So once you have chosen a specific
model for a specific environment, you wil
Hi,
Interesting links...
For such a kind of signal processing (involving optimization and so
on). I would embed many C functions instead of coding everything in
nesC.
In my case I feel more comfortable. What is your opinion, would you
rather code everything in tasks and modules?
Cheers!
Sergio
and) is sync and it could only be preempted by an async
> function (for example: an interrupt handler). But, obviously, uartIn and
> uartQueue is private and can't be accessed in any async function. So, I
> think it's useless to put atomic here.
>
> Best Regards,
> Ru
I use float too because saves me time in coding, but I consider that
for final application convert to integer before transmission would be
more efficient in terms of bandwidth. Of course it depends on the
number of motes that are transmitting at the same time.
I did not find any nx_float in the t
eady made the some of the tutorials, like BlinkToRadio, BaseStation,
> and RssiDemo, but I wasn't acquainted with the command send power. If it is
> possible can you send me a link with a proper tutorial or turorials. I will
> be very grateful.
>
> Thanks in advance.
>
> /L
Regarding the noise floor, you can directly look at the "receiver
sensitivity" on the radio specifications. That is the minimum level
that you will be able to get. I think that is all, unless you mean
about interferences...
But anyway, I would say that you can not measure interference from
other se
Hi,
I have installed a new toolchain for imote2 in a 64bit machine. After
setting up all the environment I am able to make the Blink application
and it works fine.
However, when I try to make any application involving ActiveMessage
then it gives this weird message:
In file included from /opt/tiny
Hi,
It seems that the Dummy Extended Address, named LocalIeeeEui64C, has
been included for micaz, but not for intelmote2. So as the
/opt/tinyos-2.x/tos/chips/cc2420/control/CC2420ControlC.nc file wires
it, and the //uses interface LocalIeeeEui64;
On Tue, May 10, 2011 at 2:03 PM, Sergio
explanation of LocalIeeeEui64C functionality and how it
can be ported to intelmote2 would still be very appreciated :-)
Thanks!
Sergio
On Tue, May 10, 2011 at 4:56 PM, Sergio Valcarcel wrote:
> Hi,
>
> It seems that the Dummy Extended Address, named LocalIeeeEui64C, has
> been
On Tue, May 10, 2011 at 5:01 PM, Sergio Valcarcel wrote:
> Oops, I sent without finishing...
>
> It seems that the Dummy Extended Address, named LocalIeeeEui64C, has
> been included for micaz, but not for intelmote2.
> So as the /opt/tinyos-2.x/tos/chips/cc2420/control/CC2420ControlC.
Hi,
We are using actively the imote2 for distributed signal processing under TinyOS.
I know that some other Spanish groups are using it as well.
The problem of going to Linux is that we would missed the possibility
of playing with an even-oriented OS, which most likely is gonna be the
standard ap
Hi Nazmul,
I have no used serial connections for a while but I would say that COM4
sounds like Windows, while it seems you are programming in a Linux shell
using the /dev/ttyS3. So I would recommend you to check the tutorials to see
whether you are setting the serial forwarder properly.
The resyn
Hi Peng,
For a given bandwidth, the capacity of a channel is function of the signal
to noise ratio. Neither the noise, nor the signal alone, but what matters is
how larger is the signal with respect to the noise. In fact, you should
treat as noise any other channel disturbance, like interference.
Hi,
I wrote a short guide with the steps that I followed to set TinyOS-2.1.1,
and to build an updated imote2 toolchain, in Ubuntu 10.10, for an Intel 64
bits machine.
The compiler is gcc4.3.5, with newlib1.19.0 and binutils2.20.90. I use
also nesc-1.3.2.
Indeed it is just an extension of the
Dear Junaid,
When you say USB bootloeader, do you mean that you are using OpenOCD with
the corresponding Olimex board for programming the imote2?
In such a case, what is the output of "openocd f
/usr/local/share/openocd/scripts/interface/olimexarmusb tinyh.cfg f
/usr/local/share/openocd/scri
Hi Mathew,
As you pointed RSSI is not a very accurate estimator of distance, mainly in
indoor, however, it still can be useful if you use a powerful inference
algorithm.
Time Delay of Arrival could be a much more accurate variable, but then you
need specific radios, I think the CC2420 does not al
Hello Peng,
it is quite simple. RSSI is measuring power, it does not matter quite much
whether it comes from noise, interference or useful signal.
That is the reason because there is another quality indicator which measures
signal to noise ratio.
Cheers!
Sergio
On Wed, Jun 15, 2011 at 4:14 PM,
aused by nearby communications?
>
> And what is the other indicator in CC2420? Is it LQI? Or it has to be
> manually calculated?
>
> Cheers,
>
> Peng
>
> On 15 June 2011 16:00, Sergio Valcarcel wrote:
> > Hello Peng,
> > it is quite simple. RSSI is measuring power, it
Hi,
just mention that sometimes happen that one removes the USB while the serial
port is still opened, and then the driver locks it and creates a new one-
Cheers!
Sergio
On Thu, Jun 16, 2011 at 2:55 PM, colum walsh wrote:
> Hi Romain,
>
> the port changes while SerialForwarder is running. It t
Hi Hugo,
there is no gain in a radio chip, that concept is more related to the
antenna and it is usually a fix parameter based on the radiation pattern.
However, you can set the transmitting RSSI (power) using the CC2420Packet
interface. Have a look into the tos chips cc2420 interfaces and you wi
Just a hint that may (or may not) help...
Are you using a 64bit or 32 bit system?
Are both versions of the toolchain available in the repository?
Cheers!
Sergio
On Sun, Jun 19, 2011 at 4:03 PM, Martin Zoller wrote:
> **
> Hi Adel,
> What exactly are you compiling, i.e. where are you doing "make
eive that both versions are available in the repository.
>
> Best regards,
> Adel.
>
> On Sun, Jun 19, 2011 at 10:07 AM, Sergio Valcarcel
> wrote:
>
>> Just a hint that may (or may not) help...
>> Are you using a 64bit or 32 bit system?
>> Are both versions of th
Hi,
just fast guessing... I have not understood, are you sure that the other
mote is transmitting every time, or just once? You could set a led in the
transmitter to check it.
Cheers!
Sergio
On Mon, Jun 20, 2011 at 8:54 PM, mjac...@hofstra.edu <
mjac...@pride.hofstra.edu> wrote:
>
> Hello,
>
>
Hi,
The receive even is not a command, but an asynchronous event that is
signaled every time the radio chip gets a message of the predefined type
(defined as an AM channel number in the configuration).
You may really want to read the Tutorial Mote-2-Mote radio communication. It
will help you a lo
Hi Vinodh,
You may want to read the more-to-mote radio communication tutorial.
Then, you can set and read the rssi using the CC2420Packet interface.
That's all!
I have no sample code right here but it is quite straightforward.
Cheers!
Sergio
On Thu, Jun 30, 2011 at 10:16 PM, vinod kumar wrote:
Yes, it is really simple. Use mig to generate the Java class associated with
the message you send from the mote to the PC. Then register the listener for
that AM channel. Finally, every time your listener receives a message use
the automatically generated methods (with mig) for extracting values.
Hi,
The idea is there:
1. Implement a program that is able to send and receive data through
serial port. You may search for terms like: program serial port linux
programming.Try this program communicating 2 PCs.
2. You can send a command just moving the data, but you may have to
re
wrote:
> Hey!!
>
> I got a code working, i can read data coming in from the motes over USB.
> When i send the data, my mote is unable to handle it. I'm now stuck here,
> on the mote end. Can you help??
>
> Always Yours
> Tejovanth
> Tj n Spook
>
>
>
Hi,
In the case you want to use MIG and a struct message you still can use
floats, but then you can't use an nx_ network type but a regular one.
However, I guess you mean using the printf library, but I have no much
experience with it.
Cheers!
Sergio
On Thu, Jul 28, 2011 at 11:50 PM, Harsha Ch
Hi Nahr,
My suggestion is to program the mathematical parts in C and the
communication parts in nesC.
Good luck!
Sergio
On Sat, Aug 6, 2011 at 1:03 AM, Nahr Elk wrote:
> Hello,
>
> I would like please to implement the least mean square algorithm on sensors
> using nc language.
> Is this feasib
application, isn't it?
>
> Ok, I will try this.
>
> Thank you.
>
> Best regards,
> Nahr Elk
>
>
> 2011/8/6 Sergio Valcarcel
>
>> Hi Nahr,
>>
>> My suggestion is to program the mathematical parts in C and the
>> communication parts in n
and multiple languages.
>> Noting that I am now testing my code with Tossim.
>>
>> Best regards,
>> Maissa Ben Jamaa
>>
>>
>> 2011/9/8 Sergio Valcarcel
>>
>>> Dear Maissa,
>>>
>>> Please, check this thread:
>>>
&
Hi Jude,
That's a basic question on the use of the communication capabilities of
TinyOS and, in my opinion, one of its strengths.
You can start following this tutorial:
http://docs.tinyos.net/tinywiki/index.php/Mote-mote_radio_communication
And you may be interested to have this reference:
http://
Hi Shailendra,
I recommend you to follow the tutorials:
http://docs.tinyos.net/tinywiki/index.php/TinyOS_Tutorials
There are some ad-hoc protocols for multi-hoping. You can read about that
in those tutorials and references therein.
There is also BLIP, an implementation of IPv6, so you can researc
Hi,
I may not quite understand, but there should be quite transparent.
The address should not make any difference when sending to the serial port.
I assume that you have created the corresponding
components SerialActiveMessageC
and
components new SerialAMSenderC(AM_TEST_SERIAL_MSG)
don't you?
How
Hi,
You are able to show something like leds switching right?
The next step in your demo might be to make a GUI in Java with some buttons
like switch on/off the 3 leds on the other mote; another example may be
text box in which the user can write a number (0-7) and click a button to
send it to th
Hi Obinna,
I do not quite understand your question.
On one hand, IEEE 802.15.4 is a Medium Access Control protocol, i.e. it is
in charge of sharing the air (more specifically the RF spectrum) to enable
many users communicate in the same channel at almost the same time.
On the other hand, localiz
Hi,
You may start reviewing the tutorials to understand how to make a state
machine in the motes, using timers, communications and so on.
Cheers!
Sergio
On Wed, Feb 1, 2012 at 12:11 AM, Ali Daylamani wrote:
> dear friends**
> can any body help me to write this application?
> I have to
Hi,
I do not know the encryption-functionality, but regarding the serial
communication, have you tried to check what the Java program is
transmitting? Try to connect it to serial terminal in another
computer. Also, you may try to implement a minimal serial-to-serial
communication program so every
.
Good luck! Cheers!!!
Sergio
On Fri, Feb 3, 2012 at 8:18 PM, Ali Daylamani wrote:
> I have started reading the tutorials,and I know some basical things,but I
> have no idea about how can I write this program.
> I have to simulate 50 nodes whith tossim.. can u help me?
>
>
s like (1) how can a
> make an ordinary node(telosb mote) to become a beacon node without using
> GPS (2) How can i measure the RSSI when two motes are communicating.
>
> your timely answers will be welcomed
>
> many thanks
> Obinna
>
> --- On *Thu, 2/2/12, Sergio Valc
Hi,
Everything depends on how much you want to spend.
Think that a spectrum analyzer (SA) does not analyze protocols, but rather
it will help you to check the RF front end. If you go to the IEEE 802.15.4
standard you will find a special chapter in which all the RF parameters are
defined (for the
Hi,
I have recently moved to Contiki OS. It comes with a wonderful simulator
named Cooja.
Cheers!
Sergio
On Thu, Feb 9, 2012 at 6:56 PM, Varun Agrawal wrote:
> Does anyone know of any GUI based simulation tool for TinyOS 2.1? Like
> TinyViz but for 2.x. I need to visualize the nodes but withou
Hi,
I have not used Tiny OS for many months now, but I do not quite remember to
use the command directly.
I think that when using that class you are launching a thread for
listening. But you also need another class to set what you want to do with
the incoming packets.
But I insist that I am not q
drás Bíró
> Hi,
>
> On Sun, Feb 12, 2012 at 12:17 PM, Sergio Valcarcel
> wrote:
> > Hi,
> >
> > I have not used Tiny OS for many months now, but I do not quite remember
> to
> > use the command directly.
> > I think that when using that class you are lau
(e.g. green if success, red if not) and check whether the
SerialForwarder is coherent with the leds.
Good luck!
Sergio
2012/2/12 Sergio Valcarcel
> Hi,
>
> About the original problem: Listen waits for very specific message
>> format (framed, escaped, checksumed, and it has a head
Hi,
no idea at all.
Probably you are interested in developing using the programming model of
Tiny OS.
On one hand that would be great in order to have available more signal
processing components (like audio compression). But on the other hand I
found that it takes quite a lot of time at the begin
if you tell
> about such techniques to compress data locally in a sensor node before
> transmission. Have you heard about Intel IIP for that ?!
>
> ------
> *From:* Sergio Valcarcel
> *To:* Mashal al-shboul
> *Cc:* "tinyos-help@mi
Hi,
No idea. It should not be like that.
Have you tried with only one node or many? If there are many perhaps you
are getting a message from another one.
Otherwise there may be something wrong in your code...
Cheers!
Sergio
On Wed, Feb 15, 2012 at 4:33 PM, Omar Cheikhrouhou (yahoo) <
enis01a...
No much idea about the printf and how to read the std output from Matlab...
But I encourage the mote2pc tutorial, MIG is great and you will find it
very easy to use. And I am sure that getting values from the serial port
with Matlab is not difficult, indeed you can convert the MIG-generated Java
cl
Hi,
this is what I measured one and a half year ago using an iMote2 and a
spectrum analyzer, I actually demodulated the signal so you can be sure
that the values are quite accurate.
However the weird thing is that the mote did not rise to 0dBm, but only to
-4dBm. Sorry, I did not remember whether
ttenuator over the antenna or measuring the power some
> distance away? I'm not familiar with spectrum analyzer, so I'm just giving
> some naive guess here.
>
>
> On Tue, Feb 21, 2012 at 7:52 AM, Sergio Valcarcel wrote:
>
>> Hi,
>>
>> this is what I mea
s too
> large for my purpose.
>
> Or has anyone got a measurement conforming to the datasheet?
>
> On Tue, Feb 21, 2012 at 12:20 PM, Sergio Valcarcel
> wrote:
>
>> Hi
>>
>> We sold a sma connector to the iMote2 board which was connected directly
>>
Hi,
no idea, but every time that I see this kind of questions I always tell
that it is possible to use std C functions in nesC. Look for it in the
maillist archives (though sometimes it is a bit tricky to share the
variables between nesC module and C functions).
I hope this helps!
Sergio
On Tu
Hi,
I did it a long time ago for the CC2420. It is easy but I do not remember
how to exactly.
I suggest you to enter into the platform, chipset or cpu directory and look
for your particular radio chipset header. You will find the right module
and method there.
Cheers!
Sergio
On Fri, Feb 24, 201
Hello,
The question is not trivial. First of all you need to have your
specifications clear. The most critical are usually RAM size, processing
power, consumption, price, portability to your preferred operating system
and good development tools (reliable toolchain and debugging).
Cheers!
Sergio
Hi Mash'al
In order to make intelmote2 (imote2) work at 106 MHz
1) remove -DPXA27X_13M flag from
"/opt/tinyos-2.1.1/support/make/intelmote2.target"
#CFLAGS += -DPXA27X_13M -T$(TOSDIR)/platforms/intelmote2/tos.x
CFLAGS += -T$(TOSDIR)/platforms/intelmote2/tos.x
2) Then, add this tag in each applic
I have not used it for almost one year, but the serial communication is
quite straightforward.
1) You make and compile a Java program able to communicate through serial
port. Optionally you could use the classes generated by MIG
2) Launch SerialForwarder
java net.tinyos.sf.SerialForwarder -comm s
Hi,
First, of course, you need to understand how to localize with RSSi using,
for instance, trilateration. Are you familiar with that?
If yes, my advice would be to do most of the tutorials and then customize
them to localization. For instance, Then you may write a set of simple
examples followin
test[4]=0x00;
> test[5]=0x0B;
> test[6]=0x00;
> test[7]=0x00;
>
> Socket client=new Socket("localhost",902);
> DataOutputStream DOS= new DataOutputStream(client.getOutputStream());
>
> DOS.write(test, 0, test.length);
> DOS.flush();
>
Hi,
Assuming you have followed all the tutorials, I understand your question is
how to implement a wavelet transform that can process some data out of the
regular modules, available in TinyOS, right?
Then you have two options:
1) implement your own module in nesC
2) use regular C functions (or ev
> 4-8Kb at most, and no math support beyond an integer multiply --
> but sometimes it's a whopping 16 bit MUL.
>
> If you can send your raw data to a "real" computer you will
> probably have better results.
>
> MS
>
> Sergio Valcarcel wrote:
>
>>
You may have a look at Cooja, but I think you will have to write your own
plugin to pass the sound signal to the simulated motes.
Best,
Sergio
On Thu, Jul 19, 2012 at 8:57 PM, ahmed desoky wrote:
> is there a simulator for wireless sensor networks with microphones?in
> other words can we use t
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