When you get a message in [message].receive(TOS_MsgPtr m) the m.strength
field is set to the received message strength read from ADC0 when that
message was being received. I think there's some formulas for converting
that value to actual RSSI in the getting started guides.
MS
Aditya Bhave wrote:
Hi Hannes,
What ure saying is not entirely right. If you look up /tos/system/AM.h
file although the TOS_Msg struct has a "strength" field, this is not
trnasmitted or received over the radio. It is only used for internal
accounting. So one has to look up ADC channel 0 to get the RSSI value.
On 3/14/06, *Hannes Geissbuehler* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Search the tinyos helplist. This topic was discussed already many times.
Basically Tinyos puts the RSSI value of every packet received over the
Radio into the field strength of the struct TOS_Msg
Hannes
> >From what I read in the manual of MICA2 whenever the motes
receive a
> signal, the stength of the signal is stored in ADC channel 0. So
u can
> access the channel 0 on ADC and retrieve this value. Then there
are some
> standard formulas that give you the range given the signal
strength and
> receiver characteristics such as surface area of receiver etc....
>
> I wish to do the same thing in my [roject. If u happen to find
out what
> components and interfaces to use for this purpose , please let me
know.
>
> On 3/13/06, * Roberto Pagliari* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>>
wrote:
>
> How can I do RSSI measurements?
>
> _______________________________________________
> Tinyos-help mailing list
> Tinyos-help@Millennium.Berkeley.EDU
<mailto:Tinyos-help@Millennium.Berkeley.EDU>
> <mailto:Tinyos-help@Millennium.Berkeley.EDU
<mailto:Tinyos-help@Millennium.Berkeley.EDU>>
> https://mail.millennium.berkeu
> cley.edu/cgi-bin/mailman/listinfo/tinyos-help
<http://cley.edu/cgi-bin/mailman/listinfo/tinyos-help>
> <http://cley.edu/cgi-bin/mailman/listinfo/tinyos-help
<http://cley.edu/cgi-bin/mailman/listinfo/tinyos-help>>
>
>
>
>
> --
> regards,
> Aditya Bhave
>
>
>
------------------------------------------------------------------------
>
> _______________________________________________
> Tinyos-help mailing list
> Tinyos-help@Millennium.Berkeley.EDU
<mailto:Tinyos-help@Millennium.Berkeley.EDU>
>
https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
--
regards,
Aditya Bhave
------------------------------------------------------------------------
_______________________________________________
Tinyos-help mailing list
Tinyos-help@Millennium.Berkeley.EDU
https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
_______________________________________________
Tinyos-help mailing list
Tinyos-help@Millennium.Berkeley.EDU
https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
