Re: [Tinyos-help] SRFOFF and SRXON strobes necessary to switch channel
In theory, you could change the channel without turning off receive mode.
However, then you would have to prepare for some edge cases, which would
make the source code of the driver more complicated.
For example, what if you don't issue an SRFOFF, and a packet preamble comes
in after *writeFsctrl() *is called, but before the frequency register is
set. The packet will clearly not be receivced, because the frequency change
will take place in the middle of receiving the packet. It's hard to tell by
reading the cc2420 datasheet what happens to the radio state machine in
this case (page 43), and how the FIFO, FIFOP and SFD pins would behave.
To sum it up, I guess it's safer to put the radio in IDLE state before
changing the channel frequency. I do the same in the cc2420x stack. I don't
think there's a performance penalty in doing that. The radio is deaf for 12
symbol 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$CC2420Config$setChannel() *and then* **
CC2420ControlP$CC2420Config$sync()**, *which goes to the following event:
* event void SyncResource.granted() {
** call CSN.clr();
* * call SRFOFF.strobe();
* * writeFsctrl();
* * 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.
--
-Xiaohui Liu
TelosB
TinyOS 2.1.2
www.cs.wayne.edu/xliu/
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[Tinyos-help] IPSN'13 Early Registration Deadline
It is a friendly reminder that IPSN'13 early registration is this Friday March 8, 2013. For information about registration, please check out: http://www.cpsweek.org/. A complete program of IPSN'13 is at http://ipsn.acm.org/2013/program.html. To unsubscribe from the SENSORNET list: write to: mailto:sensornet-signoff-requ...@listserv.acm.org or click the following link: http://listserv.acm.org/scripts/wa-ACMLPX.exe?SUBED1=SENSORNETA=1 ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
[Tinyos-help] CFP: 1st IEEE/ACM workshop on Signal Processing Advances in Sensor Networks
We would like to bring into your attention, the 1st IEEE/ACM workshop on Signal Processing Advances in Sensor Networks, held on April 8th 2013, in Philadelphia as a part of the CPS-Week, 2013. We would like to invite you, your students, and associated researchers to participate in the workshop and contribute a poster on signal processing and its applications to sensor networks, multi-agent systems, social networks, or other network structures. Details can be found on the workshop website: http://www.eecs.tufts.edu/~khan/cps_wsp.html The workshop includes keynote speeches by Profs. José M. F. Moura, Carnegie Mellon University; and, Ali H. Sayed, University of California, Los Angeles. In addition, there are four talks by Profs. Yasamin Mostofi (UCSB), Michael Rabbat (McGill), Alejandro Ribeiro (Penn) and Ali Tajer (WSU), and a panel discussion on What role would signal and information processing play in shaping the future of sensor networks? Important Deadlines for Contributed Poster Session Submission of 2-page extended summary: March 7, 2013 (Send to: spadesnets2...@gmail.com) Final decisions on the submitted papers sent to authors: March 17, 2013 Final paper for (optional) inclusion in proceedings: April 1, 2013 (Send to: spadesnets2...@gmail.com) Please feel free to forward this invitation to others who might be interested. Let us know if you have any questions; looking forward to your contribution. Sincerely, Organizers Usman A. Khan, Tufts University, k...@ece.tufts.edu Waheed U. Bajwa, Rutgers, The State University of New Jersey, waheed.ba...@rutgers.edu Workshop Email: spadesnets2...@gmail.com -- Usman Khan Assistant Professor | Electrical and Computer Engineering | Tufts University Office: Halligan 135, 161 College Ave, Medford, MA 02155 | Tel:617-627-5299 | Fax: 617-627-3220 Director | SPARTN (Signal Processing and RoboTic Networks) Lab | Tufts University Lab: Rm 4022-4023, 196 Boston Ave., Medford, MA 02155 Personal: http://www.ece.tufts.edu/~khan | SPARTN: http://spartn.ece.tufts.edu To unsubscribe from the SENSORNET list: write to: mailto:sensornet-signoff-requ...@listserv.acm.org or click the following link: http://listserv.acm.org/scripts/wa-ACMLPX.exe?SUBED1=SENSORNETA=1 ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] where can find the Simx software and get down?
You can download SimX from here: http://tinyos.cvs.sourceforge.net/viewvc/tinyos/tinyos-2.x-contrib/wsu/tools/simx/ Best Luck -- View this message in context: http://tinyos-help.10906.n7.nabble.com/where-can-find-the-Simx-software-and-get-down-tp346p22785.html Sent from the TinyOS - Help mailing list archive at Nabble.com. ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] How to use Simx and how to install Simx?
You can use readme file to install simx on linux: http://tinyos.cvs.sourceforge.net/viewvc/tinyos/tinyos-2.x-contrib/wsu/tools/simx/simx/README?revision=1.3view=markup -- View this message in context: http://tinyos-help.10906.n7.nabble.com/How-to-use-Simx-and-how-to-install-Simx-tp1714p22786.html Sent from the TinyOS - Help mailing list archive at Nabble.com. ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
[Tinyos-help] milliseconds precision FTSP
How to get global time with milliseconds precision in FTSP? -- Atenciosamente: Gustavo Zanatta Bruno ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
[Tinyos-help] Debugging IRIS motes
Hello, recently I have read http://docs.tinyos.net/tinywiki/index.php/Debugging_IRIS_motes guide. I have checked price of mkII here in Poland and it is quite expensive for student's wallet. And my question is - Do I need EXACTLY mkII for IRIS motes or could it be, for example: http://www.propox.com/products/t_117.html?lang=enpropox_site_sessions=a3df4fe74bb4aa7a782ec7507bf5fd9c which is much cheaper. Best regards, Michał T. ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] Debugging IRIS motes
You have LEDs and the serial line: that should be enough for all of your debugging needs, at least that is what I use :) Miklos On Thu, Mar 7, 2013 at 10:57 AM, mic...@tobolewski.net wrote: Hello, recently I have read http://docs.tinyos.net/tinywiki/index.php/Debugging_IRIS_motes guide. I have checked price of mkII here in Poland and it is quite expensive for student's wallet. And my question is - Do I need EXACTLY mkII for IRIS motes or could it be, for example: http://www.propox.com/products/t_117.html?lang=enpropox_site_sessions=a3df4fe74bb4aa7a782ec7507bf5fd9c which is much cheaper. Best regards, Michał T. ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] Debugging IRIS motes
Hi, with my application that includes CTP, DelugeT2, Dissemination and serial communication I'am afraid that 3 leds will not be enough :) On Thu, 7 Mar 2013 10:59:58 -0600, Miklos Maroti mmar...@math.u-szeged.hu wrote: You have LEDs and the serial line: that should be enough for all of your debugging needs, at least that is what I use :) Miklos On Thu, Mar 7, 2013 at 10:57 AM, mic...@tobolewski.net wrote: Hello, recently I have read http://docs.tinyos.net/tinywiki/index.php/Debugging_IRIS_motes guide. I have checked price of mkII here in Poland and it is quite expensive for student's wallet. And my question is - Do I need EXACTLY mkII for IRIS motes or could it be, for example: http://www.propox.com/products/t_117.html?lang=enpropox_site_sessions=a3df4fe74bb4aa7a782ec7507bf5fd9c which is much cheaper. Best regards, Michał T. ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] Debugging IRIS motes
Store traces in the flash and use CTP to download it. You cannot stop time, and interrupt/event based software might not behave the way you think when you debug it using JTAG. Miklos On Thu, Mar 7, 2013 at 11:09 AM, mic...@tobolewski.net wrote: Hi, with my application that includes CTP, DelugeT2, Dissemination and serial communication I'am afraid that 3 leds will not be enough :) On Thu, 7 Mar 2013 10:59:58 -0600, Miklos Maroti mmar...@math.u-szeged.hu wrote: You have LEDs and the serial line: that should be enough for all of your debugging needs, at least that is what I use :) Miklos On Thu, Mar 7, 2013 at 10:57 AM, mic...@tobolewski.net wrote: Hello, recently I have read http://docs.tinyos.net/tinywiki/index.php/Debugging_IRIS_motes guide. I have checked price of mkII here in Poland and it is quite expensive for student's wallet. And my question is - Do I need EXACTLY mkII for IRIS motes or could it be, for example: http://www.propox.com/products/t_117.html?lang=enpropox_site_sessions=a3df4fe74bb4aa7a782ec7507bf5fd9c which is much cheaper. Best regards, Michał T. ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] Debugging IRIS motes
Michal: Any JTAG programmer should work that works with AVR Studio (or avr-gdb). Other than that, I couldn't agree more with Miklos about how inconvenient it is to debug sensor network applications (with timers, radio communications, etc) with JTAG. Janos On Thu, Mar 7, 2013 at 11:12 AM, Miklos Maroti mmar...@math.u-szeged.hu wrote: Store traces in the flash and use CTP to download it. You cannot stop time, and interrupt/event based software might not behave the way you think when you debug it using JTAG. Miklos On Thu, Mar 7, 2013 at 11:09 AM, mic...@tobolewski.net wrote: Hi, with my application that includes CTP, DelugeT2, Dissemination and serial communication I'am afraid that 3 leds will not be enough :) On Thu, 7 Mar 2013 10:59:58 -0600, Miklos Maroti mmar...@math.u-szeged.hu wrote: You have LEDs and the serial line: that should be enough for all of your debugging needs, at least that is what I use :) Miklos On Thu, Mar 7, 2013 at 10:57 AM, mic...@tobolewski.net wrote: Hello, recently I have read http://docs.tinyos.net/tinywiki/index.php/Debugging_IRIS_motes guide. I have checked price of mkII here in Poland and it is quite expensive for student's wallet. And my question is - Do I need EXACTLY mkII for IRIS motes or could it be, for example: http://www.propox.com/products/t_117.html?lang=enpropox_site_sessions=a3df4fe74bb4aa7a782ec7507bf5fd9c which is much cheaper. Best regards, Michał T. ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] How to send and receive different AM types in CTP?
If you do not want to change any CTP code, you can use different collection ID to distinguish between packets from different applications. - om_p On Tue, Mar 5, 2013 at 12:55 AM, Anbu Sorna sorna.a...@yahoo.com wrote: Hi all, We are doing project in tinyos on data aggregation and merging.. In my forwarder, i am receiving data of AM type 23, i have to send merged data of different AM type 10 to the receiver. Precisely how to receive one AM type and send different AM type in the forwarder of Collection Tree Protocol.. Expecting your reply Thank u.. ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
[Tinyos-help] WirelessHart
Can TinyOS / Tossim simulate WirelessHart. Thank you for any tips or recommendations . -- John Kenneth Russ College of Liberal Arts Sciences COMPUTING Wayne State University j...@wayne.edu (313)-577-0274 “If you can control a man's thinking you do not have to worry about his action. When you determine what a man shall think you do not have to concern yourself about what he will do. If you make a man feel that he is inferior, you do not have to compel him to accept an inferior status, for he will seek it himself. If you make a man think that he is justly an outcast, you do not have to order him to the back door. He will go without being told; and if there is no back door, his very nature will demand one.” ― Carter G. Woodson ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] Debugging IRIS motes
Not any JTAG programmer, JTAG ICE wouldn't work, because it doesn't support Atmega1281. But AVR Dragon is relatively cheap, and it works. Andris On Thu, Mar 7, 2013 at 8:11 PM, Janos Sallai sal...@isis.vanderbilt.eduwrote: Michal: Any JTAG programmer should work that works with AVR Studio (or avr-gdb). Other than that, I couldn't agree more with Miklos about how inconvenient it is to debug sensor network applications (with timers, radio communications, etc) with JTAG. Janos On Thu, Mar 7, 2013 at 11:12 AM, Miklos Maroti mmar...@math.u-szeged.hu wrote: Store traces in the flash and use CTP to download it. You cannot stop time, and interrupt/event based software might not behave the way you think when you debug it using JTAG. Miklos On Thu, Mar 7, 2013 at 11:09 AM, mic...@tobolewski.net wrote: Hi, with my application that includes CTP, DelugeT2, Dissemination and serial communication I'am afraid that 3 leds will not be enough :) On Thu, 7 Mar 2013 10:59:58 -0600, Miklos Maroti mmar...@math.u-szeged.hu wrote: You have LEDs and the serial line: that should be enough for all of your debugging needs, at least that is what I use :) Miklos On Thu, Mar 7, 2013 at 10:57 AM, mic...@tobolewski.net wrote: Hello, recently I have read http://docs.tinyos.net/tinywiki/index.php/Debugging_IRIS_motesguide. I have checked price of mkII here in Poland and it is quite expensive for student's wallet. And my question is - Do I need EXACTLY mkII for IRIS motes or could it be, for example: http://www.propox.com/products/t_117.html?lang=enpropox_site_sessions=a3df4fe74bb4aa7a782ec7507bf5fd9c which is much cheaper. Best regards, Michał T. ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
