[Tinyos-help] RSSI

[Marco Antonio Lopez Trinidad]

On the base of what I understand for the CC2420,

The TOSH_READ_RADIO_CCA_PIN() can be used every time you issue a request to
dispatch a packet, if the pin is active then you can go...

The RSSI value indicates if there is activity in the channel in order to start
receiving a packet.

> I need to know two questions regarding how the cc2420 works
> 1) why does in cc2420M.nc the call TOSH_READ_RADIO_CCA_PIN() does not wait
> for the RSSI_VALID flag?
> 2) if the radio doesnt transmit for a long time, is the RSSI  continuously
> updated every 8 periods of symbol and the RSSI_VALID flag is everytime high
> (this question is related to the first one)?
>

may be someone else would give us more info.

--marco.