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 service since I guess the rssi measurement is computed from some pilot bits of the packet.
Cheers, Sergio 2011/5/10 Eric Decker <cire...@gmail.com>: > > > On Mon, May 9, 2011 at 8:12 AM, Lyubomir Ivanov <n...@abv.bg> wrote: >> >> Hi Eric, >> >> Yes I want to do exactly this. > > What you should do is figure out how to send single packets, This is done > using various Send interfaces. This is split phase so will be signalled by > SendDone. Then you can send out the next packet. Start with the > tutorials, then take a look at real code that does something similar to what > you are trying to do. A good programmer copies and makes things better. >> >> One more thing is that I can not find something for measuring the noise >> floor. I know that this can be possible if a particular mote is an idle >> mode, just ready for receiving packets. In this case, can be get the Rssi, >> which will correspond to the background noise. But all I know is how to get >> Rssi when receiving packets. If you can help with that issue, it will be >> really nice. > > No clue on this end. Haven't messed with that so haven't looked at it. > What I would do is start with the chip documentation and figure out whether > the chip can provide this information when not actively receiving a packet. > Then work up through the driver to figure out a good way to present this > information in a platform independent fashion. >> >> Thanks in advance!!! >> >> -------- Оригинално писмо -------- >> От: Eric Decker >> Относно: Re: [Tinyos-help] Boadcasting packets once at a time!! >> До: Lyubomir Ivanov >> Изпратено на: Понеделник, 2011, Май 9 11:26:46 EEST >> >> >> On Mon, May 9, 2011 at 1:13 AM, Lyubomir Ivanov <n...@abv.bg> wrote: >>> >>> Hello, >>> >>> Is someone can tell me how to send a stream of packets once at a time, >>> using broadcast. Am I supposed to create some special code, or just small >>> modification in the message type will be enough? I am using tiny os 2 >> >> I'm not understanding what you are trying to do. Can you please try >> again and be more succinct. >> Are you trying to send a packet stream (one packet, then another packet, >> then an another) to the broadcast address? >> Work through the tutorials that help you understand how to use the >> networking interfaces. That will probably give >> you the insight needed to do what you want. >> >>> >>> ----------------------------------------------------------------- >>> Дизайнерски обувки с до -70%. Регистрирай се и пазарувай. >>> _______________________________________________ >>> Tinyos-help mailing list >>> Tinyos-help@millennium.berkeley.edu >>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >> >> >> >> -- >> Eric B. Decker >> Senior (over 50 :-) Researcher >> >> >> > > > -- > Eric B. Decker > Senior (over 50 :-) Researcher > > > > _______________________________________________ > 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
