Before you display the RSSI value, you should create a model that can
simulate the transmission condition such as distance, power, etc.
On 9/5/2006, "Tarun Bansal" <[EMAIL PROTECTED]> wrote:
>What I meant was that whether some Plug-in can be developed in TinyViz
>without the underlying support offered by TOSSIM. This for example,
>can be done like:
>1. There is some plug-in in TinyViz which knows the location of all nodes
>2. You can find out at what power transmitter is transmitting
>3. Based on the distance between the nodes, transmitted power and Path
>Loss Exponent, the received power can be determined APPROXIMATELY
>using simple calculations.
>
>Am I right??
>Tarun
>
>
>On 9/5/06, Philip Levis <[EMAIL PROTECTED]> wrote:
>> On Sep 5, 2006, at 6:37 AM, Tarun Bansal wrote:
>>
>> > I am trying to get RSSI value in TOSSIM (version is 1.1.11-3). The
>> > code that I am using is:
>> >
>> > event TOS_MsgPtr ReceiveRUmsg.receive(TOS_MsgPtr m) {
>> > uint16_t RSSI = m->strength;
>> > dbg(DBG_USR2, "Receive signal strength as
>> > %d\n",(int)RSSI);
>> > }
>> >
>> > This doesnt seem to work as it shows value as 0. Looking at the
>> > archives I see that TinyOS versions 1.x doesnt support this. But
>> >
>> > 1. Does 2.x support this?
>>
>> 2.x currently does not support this, for two reasons:
>>
>> 1) The exact radio metadata interfaces have not been determined yet
>> (i.e., should RSSI readings be hardware independent or hardware
>> dependent).
>> 2) The code hasn't been written.
>>
>> Since the 2.x radio model is based on RSSI, once 1) is determined, 2)
>> will be very easy to do. Then, you will be able to access RSSI
>> readings. I am not sure whether this will be ready by the first 2.0
>> release.
>>
>> Phil
>>
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