Hi Sulaiman,
You can use $TOSDIR/chips/msp430/timer/AlarmMicro16C.nc.
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TelosB
TinyOS 2.1.2
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On Sun, Feb 9, 2014 at 12:04 PM, Sulaiman Rais sulaimanr...@yahoo.comwrote:
I am having same trouble finding Microsecond timer for telosb. i have to
send
Hi Faisal,
What platform are you using? Have you disabled address recognition, which
is the default in cc2420 stack?
One simply way is
CFLAGS+=-DCC2420_NO_ADDRESS_RECOGNITION
Hope this helps.
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On Tue, Feb 4, 2014 at 9:07 AM, Faisal
Hi everyone,
AFAIK, TOSSIM does not simulate execution time.
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On Sat, Dec 7, 2013 at 8:23 PM, Eric Decker cire...@gmail.com wrote:
you probably should also use LocalTimeMicroC for better resolution.
I don't know how that behaves
Hi,
By log I mean a serial message sent from a mote to a PC. I'm using telosb
and T2.1.1. Log fails because of a bug in my code.
Sent from my iPhone
On Nov 1, 2013, at 6:15 PM, Eric Decker cire...@gmail.com wrote:
On Fri, Nov 1, 2013 at 2:00 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi
-help
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!
http://www.google.co.kr/#newwindow=1sclient=psy-abq=dco+msp430+datasheetoq=dco+msp430+datasheetgs_l=hp.3...5186.6707.1.6864.10.10.0.0.0.0.138.930.6j3.9.0...0.0...1c.1.12.psy-ab.ITpRwb2Ld9Ipbx=1bav=on.2,or.r_qf.bvm=bv.46340616,d.aGcfp=c76d164efb6c1041biw=1177bih=775
2013/5/11 Xiaohui Liu xiao
/w) being tweaked to be pretty stable.
All the above is written assuming a 5438a
On Sun, May 12, 2013 at 1:31 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi,
Thanks for the reply.
If quartz crystal oscillator is used, it mostly does not drift more than
40 ppm. What about DCO's frequency
Hi everyone,
One of the clock sources in TelosB is digitally-controlled oscillator
(DCO). How does it work? How does it compare to RC oscillator and MHz
quartz crystal oscillator, in terms of expense, accuracy, stability and
etc.?
Thanks.
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.
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across different radios, especially the lower levels, which they were
poorly mapped.
Best!!
Sergio
On Fri, Mar 22, 2013 at 9:33 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi everyone,
Does signal attenuation depend on transmission power? Based on my limited
knowledge of physics
? How large is
the typical variation if any?
Look forward to your explanation. Thanks in advance.
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periods after changing the channel either way -- there's no way you
to get around that. It's just physics. That's how PLLs behave.
Janos
On Sun, Mar 3, 2013 at 5:17 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi everyone,
In CC2420 stack, channel switch can done through *
CC2420ControlP
();
** writeMdmctrl0();
** writeId();
** call CSN.set();
** call CSN.clr();
** call SRXON.strobe();
** call CSN.set();
** call SyncResource.release();
** post syncDone();
** }*
Can anyone please give me some hint why SRFOFF and SRXON strobes are
necessary here? Thanks.
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TinyOS 2.1.2
, fired()
event should be signaled no later than *d0 + dt*. So the above phenomena
should not occur. Can anyone please give me a hint?
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Hi everyone,
There is a bug when you set default tx power for CC2420X stack. A quick fix
is posted
herehttp://xiaohuiliucuriosity.blogspot.com/2013/02/bug-to-set-tx-power-in-cc2420x-stack.htmlin
case anyone else experiences it. Janos will commit it later.
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,
don't know if they are related. No node crashes if CC2420 stack is
used. Does anyone encounter this problem using CC2420X? Please do not
hesitate to share any thought. Thank you.
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be more than happy to take a look at it.
Janos
On Mon, Jan 14, 2013 at 11:22 AM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi everyone,
I'm using CC2420X stack to deliver unicast traffic over 100 links. Every
sender transmits with a period of 100 ms. Around 10% of the nodes crash
within 3
instead.
Janos
On Mon, Jan 7, 2013 at 10:07 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi everyone,
In the configuration:
* components new Alarm32khz32C() as SlotTimer;*
* Forwarder.SlotTimer - SlotTimer;*
In the implementation module:
*interface AlarmT32khz, uint32_t as SlotTimer
-td21537.html#a31485775
.
Thanks in advance.
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if ftsp (i.e., TimeSyncMicroC) is included and disappears
without compilation error if no ftsp is included. Hope this helps. Thanks
in advance.
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TelosB
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for your reply.
-Xiaohui
On Wed, Dec 26, 2012 at 6:24 PM, Eric Decker cire...@gmail.com wrote:
You need to get the current msp430-gcc available on macports. It is 4.6.3
On Wed, Dec 26, 2012 at 1:28 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi everyone,
After I upgraded from TinyOS 2.1.1
Hi,
The error vanishes after:
sudo port install msp430-libc
Hope this is complete for archive purpose.
-Xiaohui
On Thu, Dec 27, 2012 at 11:25 AM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi,
I upgraded msp430-gcc it to 4.6.3 and got the *two source files
specified* compilation error witnessed
the upgrade? Thanks in advance.
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Hi Janos,
I'm porting my protocol from cc2420 to cc2420x. Is there any documentation
on cc2420x besides the source code? Thanks.
-Xiaohui
On Wed, Dec 5, 2012 at 6:26 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi,
Once again, thanks very much for your prompt answer.
How to use FTSP, 32khz
is inside *Tasklet.run() {}*.
(3) What is keyword *spi_atomic*?
I'll be truly grateful if you could have me understand these questions.
-Xiaohui
On Tue, Dec 4, 2012 at 2:00 PM, Janos Sallai sal...@isis.vanderbilt.eduwrote:
transmission
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Hi,
Once again, thanks very much for your prompt answer.
How to use FTSP, 32khz and microsecond precision, with CC2420X stack? Just
make telosb cc2420x[_32khz]?
-Xiaohui
On Wed, Dec 5, 2012 at 6:14 PM, Janos Sallai sal...@isis.vanderbilt.eduwrote:
Tasklet
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the address recognition. Is there any other case
that CC2420 discards a frame, at the hardware level? Thanks in advance.
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, Xiaohui Liu xiao...@wayne.edu wrote:
Xiaohui
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:
FALSE
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efficient to take
a timestamp when issuing STXON and adjust it with a constant TX_SFD_DELAY
than servicing an SFD interrupt.
Janos
On Mon, Dec 3, 2012 at 4:10 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi,
Thanks for clarifying the reception timestamping.
Why is *TX_SFD_DELAY* accounted
Hi,
Another question: STXON is strobed when header is loaded in TXFIFO, while
the payload is loaded later. Why is there no second STXON strobe to
transmit the payload?
Thanks for your patience.
-Xiaohui
On Mon, Dec 3, 2012 at 9:44 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi Janos,
I see
Hi everyone,
If address recognition is enabled, the CC2420 radio hardware will drop any
incoming frame failing the address recognition. Is there any other case
that CC2420 discards a frame, at the hardware level? Thanks in advance.
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?
That question is related to the cc2420 stack, so I can't answer this. I
more than happy to answer questions related to the cc2420x stack, though.
Janos
On Thu, Nov 15, 2012 at 2:12 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi,
So essentially, ftsp only works with cc2420x stack, not cc2420
help will be sincerely appreciated.
BTW, timestamping is only one small part of my protocol, which changes the
default CC2420 stack extensively, thus switching to CC2420*X* stack is not
a viable option for me.
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will be sincerely appreciated.
Best regards,
-Xiaohui Liu
TinyOS 2.1.2
TelosB
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Hi Marcin,
Thanks for your prompt reply.
It turns out I'm using msp430-gcc 4.6.3, which works for you. Any other
suggestion on what may go wrong?
-Xiaohui Liu
On Mon, Nov 26, 2012 at 10:24 PM, Marcin Szczodrak mar...@ieee.org wrote:
Hi Xiaohui,
I was digging this for a while and found
to try cc2420x.
On Mon, Nov 26, 2012 at 10:33 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi Marcin,
Thanks for your prompt reply.
It turns out I'm using msp430-gcc 4.6.3, which works for you. Any other
suggestion on what may go wrong?
-Xiaohui Liu
On Mon, Nov 26, 2012 at 10:24 PM
is
associated with the buffer.
Janos
On Sun, Nov 18, 2012 at 9:23 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi,
According to this
figurehttp://www.cs.wayne.edu/xliu/downloads/offset_vs_local_time.jpg,
there is definitely some bug for timestamping in the default CC2420 radio
stack
sync error this can help reduce given the timestamping bug.
Any comment on this?
Thanks all for your replies.
-Xiaohui Liu
On Mon, Nov 19, 2012 at 7:42 PM, Eric Decker cire...@gmail.com wrote:
On Mon, Nov 19, 2012 at 4:21 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi,
Is it possible
me some definite answer, please? Thanks.
-Xiaohui Liu
TelosB
TinyOS 2.1.2
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CC2420 stack has?
Thanks.
On Thu, Nov 15, 2012 at 4:00 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Thanks.
Anyone else wants to share some experience implementing microsecond ftsp
on TelosB?
-Xiaohui Liu
On Thu, Nov 15, 2012 at 3:49 PM, Janos Sallai janos.sal...@vanderbilt.edu
wrote:
You
default
cc2420? If not, what changes are necessary to have it? Thanks for any hint
in advance.
-Xiaohui Liu
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Thanks.
Anyone else wants to share some experience implementing microsecond ftsp on
TelosB?
-Xiaohui Liu
On Thu, Nov 15, 2012 at 3:49 PM, Janos Sallai
janos.sal...@vanderbilt.eduwrote:
You will probably have to change the clock source (change T32khz to
TMicro). I'm not familiar with the code
Hi everyone,
I finally recovered my TelosB motes. The whole procedure is listed
herehttp://xiaohuiliucuriosity.blogspot.com/2012/11/how-to-recover-telosb-motes-after.html
in
case anyone encounters the same issue.
-Xiaohui Liu
On Mon, Oct 29, 2012 at 11:20 AM, Xiaohui Liu xiao...@wayne.edu wrote
information can be found in this
threadhttp://e2e.ti.com/support/microcontrollers/msp43016-bit_ultra-low_power_mcus/f/166/p/191579/793553.aspx#793553
.
Any help would be truly appreciated.
Best regards,
-Xiaohui Liu
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Liu xiao...@wayne.edu wrote:
Hi,
After RST/NMI pin is configured in NMI mode,
More details please. What do you mean the pin is configured in NMI mode?
I assume you are messing with WDTCTL.
TI's NMI is strange in that it can be masked off. Also:
Note: Holding RST/NMI Low
When
give some suggestion on how they can be programmed
again? This seems also an issue for
MSP430F1491http://www.ti.com/lit/er/slaz141/slaz141.pdf,
as shown in bug BSL5.
-Xiaohui Liu
TelosB
T2.1.2
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, it changes many
low-level components, so it is incompatible with TOSSIM, making gdb not an
option.
Please weigh in if you have any suggestion. Thank you.
-Xiaohui Liu
TelosB
T2.1.2
On Fri, Oct 26, 2012 at 10:24 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi,
One correction:
In case 2), there should
?
-Xiaohui Liu
TelosB
T2.1.2
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Hi,
One correction:
In case 2), there should only be one place:
/opt/tinyos-2.1.2/tos/lib/tosboot/msp430/HardwareC.nc:57:WDTCTL = 0;
Sorry about the error.
On Fri, Oct 26, 2012 at 6:39 PM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi everyone,
My program is reset some time after a node boots
the
condition to regard a tx timestamp as invalid? Your help will be highly
appreciated.
-Xiaohui Liu
TelosB
TinyOS 2.1.2
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understand and thank you in advance.
On Thu, Oct 25, 2012 at 1:00 AM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi everyone,
When is transmission timestamp considered invalid for a packet? AFAIK, the
only place to invalidate a packet being transmitted is in
CC2420TransmitP$CaptureSFD$captured
Hi,
After I upgrade to T2.1.2, the compiler error goes away.
On Mon, Oct 22, 2012 at 1:14 AM, Xiaohui Liu xiao...@wayne.edu wrote:
Hi everyone,
When my program is compiled, internal error: Segmentation fault error
prompts as reported
herehttp://mail.millennium.berkeley.edu/pipermail
/manual/c1685.html. I
also tried to upgrade msp430-gcc by apt-get install msp430-gcc-tinyos.
But it is incompatible with TinyOS 2.1.1.
Does anyone know where or how I can get a copy of executable
*msp430-gcc*compatible with TinyOS 2.1.1? Thanks for your help in
advance.
Best regards,
-Xiaohui Liu
Thanks again for your patient reply. Please CIL.
On Thu, Oct 11, 2012 at 8:57 PM, Eric Decker cire...@gmail.com wrote:
On Wed, Oct 10, 2012 at 10:53 PM, Xiaohui Liu whu...@gmail.com wrote:
Hi Eric,
Thanks for your prompt reply. Please see my comments inline.
On Wed, Oct 10, 2012 at 9:12
a severe issue but I haven't found any measure to cope with it
in the stack. Can anyone please give me a hint? Thanks sincerely in advance.
-- TelosB
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how far it was taken.
I will one of these days visit this issue because I need a production
quality radio stack for the CC2520 radio. So will dig into it at that
time.
In the meantime ...
On Wed, Oct 10, 2012 at 4:05 PM, Xiaohui Liu whu...@gmail.com wrote:
Hello everyone,
Normally
SpiResource.release();*
* }*
*}*
* }*
The statement in red checks if there is more frames buffered in RXFIFO. Why
not use
*if (call FIFO.get()) {*
?
Thanks in advance and await your explanation.
-- TelosB
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herehttp://www.mail-archive.com/tinyos-help@millennium.berkeley.edu/msg21417.htmlbut
no answer is given. Please help me understand. Thanks in advance for
your attention.
-Xiaohui Liu
On Tue, Sep 25, 2012 at 6:46 PM, Xiaohui Liu whu...@gmail.com wrote:
Hi everyone,
The following shows up
is SFLUSHRX strobe issued twice? Thanks for your explanation.
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percentage defined here? And why dropped acks are preferential
over false acks?
Your explanation will be sincerely appreciated.
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.
On Sat, Sep 22, 2012 at 4:46 PM, John Griessen j...@ecosensory.comwrote:
On 09/22/2012 03:27 AM, wasif masood wrote:
Thanks alot Xiaohui, but how can I register for that?
On Sat, Sep 22, 2012 at 12:07 AM, Xiaohui Liu whu...@gmail.commailto:
whu...@gmail.com wrote:
Hi
@millennium.berkeley.edu
https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
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Hi everyone,
I have been stuck by this issue for quite a few days and tried many
options. Still, none of them works as
PIPhttp://www.cse.unl.edu/~zzhong/F12CSCE990/paper/PIPMACSenSys10.pdfdoes.
Can anyone please help?
On Fri, Sep 14, 2012 at 1:20 AM, Xiaohui Liu whu...@gmail.com wrote:
Hi,
I
.
The current architecture of the code may not be capable of doing what you
are trying to do. I said MAY NOT. It depends on the timing
constraints/requirements that you need for your algorithm to work
properly.
eric
On Mon, Sep 10, 2012 at 8:44 PM, Xiaohui Liu whu...@gmail.com wrote:
Hi
Thank you for your patient and clear reply. I'll try my best to improve :-)
On Tue, Sep 11, 2012 at 2:24 AM, Eric Decker cire...@gmail.com wrote:
On Mon, Sep 10, 2012 at 8:47 PM, Xiaohui Liu whu...@gmail.com wrote:
One additional comment.
3) Can USART0 and USART1 be used in parallel
Thank you for your prompt and helpful reply. CIL.
On Mon, Sep 10, 2012 at 1:25 AM, Eric Decker cire...@gmail.com wrote:
On Sun, Sep 9, 2012 at 9:39 PM, Xiaohui Liu whu...@gmail.com wrote:
Hello all,
I have a few things uncertain about USART on TelosB.
1) This may be naive, but I'm
.pdf
.
Any hint will be sincerely appreciated.
Cheers,
-Xiaohui Liu
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Hi,
To be precise, my channel switch delay is defined as the interval from when
CC2420Config.sync() is called to CC2420Config.syncDone() event is triggered.
On Mon, Sep 10, 2012 at 11:02 PM, Xiaohui Liu whu...@gmail.com wrote:
Hi everyone,
I'm developing a protocol which requires fast switch
One additional comment.
On Mon, Sep 10, 2012 at 10:25 PM, Xiaohui Liu whu...@gmail.com wrote:
Thank you for your prompt and helpful reply. CIL.
On Mon, Sep 10, 2012 at 1:25 AM, Eric Decker cire...@gmail.com wrote:
On Sun, Sep 9, 2012 at 9:39 PM, Xiaohui Liu whu...@gmail.com wrote:
Hello
is being read
using USART1?
Your explanation will be highly appreciated.
-Xiaohui Liu
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Thank you both for sharing your insights. I still have a few comments, CIL.
On Tue, Aug 28, 2012 at 3:52 AM, Eric Decker cire...@gmail.com wrote:
On Mon, Aug 27, 2012 at 6:59 PM, Xiaohui Liu whu...@gmail.com wrote:
Hello all,
1) I have the following code snippet:
*uint8_t
Thanks again for your promptly reply. I still have a few follow-up
questions, please CIL.
On Wed, Aug 29, 2012 at 8:38 PM, Eric Decker cire...@gmail.com wrote:
On Wed, Aug 29, 2012 at 4:40 PM, Xiaohui Liu whu...@gmail.com wrote:
Thank you both for sharing your insights. I still have a few
except
*a = 0;*
in Timer.
Can anybody please share the experience on atomic? Thanks in advance.
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and
herehttp://mail.millennium.berkeley.edu/pipermail/tinyos-help/2005-August/011727.html,
but neither has definite answers for the questions above. If you can give
any hint, that will be great. Thanks in advance.
-- Cheers,
-Xiaohui Liu
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* (int32_t)(*time -
localAverage));*
*return is_synced();*
*}*
I repeated my tests 6 times and ftsp runs like a charm now. The abnormal
skew never shows up, even root's skew based on regression table can still
be large.
On Thu, Jul 12, 2012 at 10:01 PM, Xiaohui Liu whu...@gmail.com wrote
this is add
instrumentation (logging) of various state in nodes.
that is what I would recommend. I don't see anyway around it.
On Tue, Jul 10, 2012 at 1:16 PM, Xiaohui Liu whu...@gmail.com wrote:
Hi everyone,
I'm using FTSP of T32khz accuracy (i.e., TimeSync32kC) to synchronize a
network
is found. The only one I found is
PRIMEhttp://mail.millennium.berkeley.edu/pipermail/tinyos/2003-September/97.html,
which
is only for T1. Thanks in advance.
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https
be regarded as
normal. Does anyone know what might be causing this issue? One observation
is that regardless of the skew in a run, all nodes report almost identical
skews.
Your reply will be greatly appreciated.
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Decker cire...@gmail.com wrote:
sync will always have some jitter (unless you aren't really doing anything
else besides the one task).
so you will have to so the TDMA slotting at interrupt level and kick the
transmitter stuff at sync level.
On Mon, Jul 2, 2012 at 7:51 PM, Xiaohui Liu whu
Zhichao Cao
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Tinyos
.
If you have any suggestion, please do not hesitate to share. Your help
would be sincerely appreciated.
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. Is there anyway to measure RSSI at better accuracy, say, 0.5
dB as my application requires?
Thanks in advance.
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in advance.
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Hi all,
Does any one know what is a CCA hysteresis as said on the CCA section of
CC2420's datasheet? Thanks for sharing.
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would suffice.
Janos
On Tue, Aug 9, 2011 at 10:27 PM, Xiaohui Liu whu...@gmail.com wrote:
Hi everyone,
How can I measure the time for a snippet of code (e.g., a function call
foo), either synchronous or asynchronous, to execute?
A straight forward way can be:
start_time = Call
.
On Sun, Jun 6, 2010 at 8:33 PM, Eric Decker cire...@gmail.com wrote:
okay, let me try.
On Sun, Jun 6, 2010 at 11:05 AM, Xiaohui Liu whu...@gmail.com wrote:
Hi,
Can I say event is at higher level while interrupt is at lower level? I
guess event handler may be sync if you look
is a must in this case?
Thanks in advance.
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. Will call STXON.strobe() always return CC2420_STATUS_TX_ACTIVE and
send the packet regardless of the channel state? If no, under what
condition can this happen? Thanks for your attention.
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Hi everyone,
Is there source code documentation for TOSSIM like other platforms such as
telosb http://www.tinyos.net/tinyos-2.1.0/doc/nesdoc/telosb/index.html? I
tried to generate it using make micaz sim docs, which does not work. Any
hint will be highly appreciated.
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asks
the same question, but no definite answer is given. Your assistance will be
truly appreciated.
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Hi everyone,
I'm wondering how to set the carrier sensing threshold for CC2420. Can
anyone please help?
BTW, I find CC2420_RSSI_CCA_THR = 8 in CC2420.h but not sure what 8 means
and if this is the right place to change. Hope this contributes.
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.
So, in both cases, Send.sendDone() will be signalled. Am I right? Your help
will be highly appreciated.
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TelosB
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Hi everyone,
Is there any function equivalent to
assert()http://www.cplusplus.com/reference/clibrary/cassert/assert/
in
TinyOS? If yes, can it be used on mote and/or TOSSIM? Thanks.
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In this web page, we can find detail information about how to use and
configure Edge Router:
http://docs.tinyos.net/tinywiki/index.php/BLIP_Tutorial
Now I want to get more information about how the Edge Router working, but I
can not find the on www.tinyos.net. Can you give me some clue to find
Hi everyone,
I'm curious on how IEEE 802.11 standard works in reality. Can anyone
recommend a good reference implementation of 802.11? It does not have to be
written in nesc, C/C++ or java also work. Thanks in advance.
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very much in advance.
BTW, I'm using Ubuntu and TelosB motes, serial forwarder uses port 9001.
Two machines can ssh to each other.
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