Sean, I am assuming that you want to sample the noise in the RF frequency band. You can use the RSSI signal from the CC1000 radio chip to get a good idea of what the noise level is at. This signal is a current output that is connected to gnd across a resistor (and capacitor for filtering), so tha
Hi all,
I am working with the localization of micaz motes (with the 1.1.7version of
TinyOS), and for it, I need to know the RSSI value messured.
At this moment, I am able to read the value, and see that when I separate
the motes, this value dicreases. But which are the unit of this value ? Ho
Take the RSSI value, which is an 8-bit SIGNED integer. This is RSSI_VAL and is in units of dBm. Subtract 45 dBm from this value. That is the approximate received signal strength. Matt [EMAIL PROTECTED] wrote: -To: tinyos-help@Millennium.Berkeley.EDUFrom: "Andres Aberasturi" <[EMAIL PROTECT
Hi,
I have an application that copies the "msg->strength" and saving it in an
uint8_t data:
uint8_t msg->data[4]=msg->strength
then with my own xlisten, I visualize the "strength".
Thanks for your attention,
Andrés
From: "Hui KANG" <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: Re: [
SP has an option to request reliability, which will let you know if
the packet was acknowledged or not. Please see the SPSend interface
documentation in /opt/moteiv/doc/nesdoc or read the SP paper at
www.polastre.com/pubs.html
-Joe
On 6/12/06, giovanni gamba <[EMAIL PROTECTED]> wrote:
Hi all,
Hi all,
i'd like to work with packages bigger than 29 bytes. So i modified in AM.h
TOSH_DATA_LENGTH (but no more of 100 bytes, cause there are many warnings
showed by the compiler).
So the question is:
does anyone know how to see in TinyViz all the data bytes? cause by default
you can see on
The easiest thing is to use GenericCom, you can enable ACk
by call enableACK() command. For SP, maybe it is a good stuff, but it will take
many efforts to understand the mechanism, since there is no good documentation
on that -- the SP paper is high level, not much help to
programming.
Fro
On Jun 11, 2006, at 9:41 AM, Matthew J Whelan wrote:
I don't think there is an interface, but using the hardware
multiplier is a rather easy task to figure out. I haven't used it
for FFT, but I have implemented digital filtering without any
issues. You should check out the TI application
On Jun 12, 2006, at 7:29 AM, Andres Aberasturi wrote:
Hi all,
We have been working with TinyOs and NesC some few months, but we
still have some doubts. We want to ask you the following three
questions:
1.- In some places, we have read that events can call commands,
post tasks and signa
On Jun 12, 2006, at 8:41 AM, Aditya Bhave wrote:
Hello all,
Does any one know of a good simulator (preferably on a Windows
based PC) that one can use to develop applications using the motes.
I do not have access to the actual hardware and would like to work
on projects with simulations.
On Jun 12, 2006, at 2:10 PM, Adam wrote:
Thanks again, Philip. May I ask you another question: in genealogy of
tinyos protocols, what MAC protocols are used in each platform by
default?
Several people asked this question in the forum, but no one give an
accurate
answer.
The default TinyO
On Jun 12, 2006, at 7:38 PM, Sean Casey wrote:
Hi everyone,
Is there a way to sample the noise in a given environment? I was
interested in having a mote (mica2) just monitor the noise level,
and not send or receive any packets. I checked the archives and I
couldn't find anything on this
Hello,
make pc docs, produces the errors below, any help is appreciated, thanks
Mikael
$ make pc docs
Making documentation for Blink on pc
nesdoc /opt/tinyos-1.x/doc/nesdoc/pc -topdir="/home/TekMan" -topdir=/
-fnesc-is-
app -pthread -fnesc-nido-tosnodes=1000 -fnesc-simulate -Wall -Wshadow
Phil, I have read your TinyOS programming manual, and still have some doubt
regarding the data race conditions:
(1)
void foo()
{
c = d;
}
..
atomic
{
a = b;
foo();
}
...
First question is: does atomic protect the variable in both side. In this
example, are a
-- Forwarded message --
From: David Gay <[EMAIL PROTECTED]>
Date: Jun 13, 2006 10:41 AM
Subject: Re: [Tinyos-help] NesC and TinyOS
To: Adam <[EMAIL PROTECTED]>
Cc: [EMAIL PROTECTED]
On 6/13/06, Adam <[EMAIL PROTECTED]> wrote:
(1)
void foo()
{
c = d;
}
..
atomic
{
On Jun 13, 2006, at 10:41 AM, David Gay wrote:
-- Forwarded message --
From: David Gay <[EMAIL PROTECTED]>
Date: Jun 13, 2006 10:41 AM
Subject: Re: [Tinyos-help] NesC and TinyOS
To: Adam <[EMAIL PROTECTED]>
Cc: [EMAIL PROTECTED]
On 6/13/06, Adam <[EMAIL PROTECTED]> wrote:
(1)
On 6/13/06, Adam <[EMAIL PROTECTED]> wrote:
Page 39 Listing 4.24 in the Phil's manual says differently... I wish what
you said is correct - easier to manage. Please clarify. Thanks.
You're misinterpreting the text there. As Phil said in his answer,
Listing 4.24 is an example of an optimisation
On Jun 13, 2006, at 9:34 AM, Adam wrote:
The easiest thing is to use GenericCom, you can enable ACk by call
enableACK() command. For SP, maybe it is a good stuff, but it will
take many efforts to understand the mechanism, since there is no
good documentation on that -- the SP paper is high
Has anyone every had the problem of computer crashing during programming of TelosB?
I have a Sony Vaio S260 Laptop, and am running WindowsXP. I have TinyOS V 1.1.15.
I dont' have any serial ports on my laptop so I had to use the USB to Serial Emulator from Telos..
So the mote is always assigned to
On 6/13/06, Adam <[EMAIL PROTECTED]> wrote:
The easiest thing is to use GenericCom, you can enable ACk by call
enableACK() command. For SP, maybe it is a good stuff, but it will take many
efforts to understand the mechanism, since there is no good documentation on
that -- the SP paper is high lev
I saw a few people talking about getting RSSI values. RSSI value seems to be zero when I use TOSSIM on a PC. Is that normal?
Thanks
Kn
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On Jun 13, 2006, at 12:15 PM, Keyan Mahadevan wrote:
I saw a few people talking about getting RSSI values. RSSI value
seems to be zero when I use TOSSIM on a PC. Is that normal?
Yes; TOSSIM in 1.x doesn't model RF signal strength. (2.x does, but
it does not yet make it accessible to applica
Hi,
I recently upgraded to TinyOS 2, and I'm having trouble compiling
for TOSSIM 2, this is what I get:
$ make micaz sim
mkdir -p build/micaz
placing object files in build/micaz
writing XML schema to app.xml
compiling BlinkAppC to object file sim.o
ncc -c -fPIC -o build/micaz/sim.o
A follow up question - is there any way I would be able to access the RSSI values in TOSSIM.
Thanks
KnOn 6/13/06, Philip Levis <[EMAIL PROTECTED]> wrote:
On Jun 13, 2006, at 12:15 PM, Keyan Mahadevan wrote:> I saw a few people talking about getting RSSI values. RSSI value> seems to be zero when I
Thanks a lot.
In the following common seeing code segment, I notice someone add 'atomic'
before 'm_data = data;' (such as OscilloscopeRF), someone does not (such as
Delta from Moteiv). Since another 'dataReady' interupt could come before
task sendData is excuted, it seems to me the first 'atomic'
On 6/13/06, Adam <[EMAIL PROTECTED]> wrote:
In the following common seeing code segment, I notice someone add 'atomic'
before 'm_data = data;' (such as OscilloscopeRF), someone does not (such as
Delta from Moteiv). Since another 'dataReady' interupt could come before
task sendData is excuted, it
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