[Tinyos-help] Displaying RSSI value in TOSSIM using TinyViz

[Philip Levis]

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