Hi,

> Could you explain me what   CFLAG += CC2420_DEF_RFPOWER=4   stands for?
> It's the cc2420 radio-chip transmission power, isn't it?

Right.

> Could you tell me which RFPOWER values are available and what is the
> translation in terms of dBm?

Please refer to the CC2420 datasheet: http://www.ti.com/lit/gpn/cc2420
, section 28 - Output Power Programming.

> Do you know if a similar flag is available for IRIS and where I can find 
> information about it?

You can use the RF230_DEF_RFPOWER define. For more details refer to
the RF230 datasheet
http://www.atmel.com/dyn/resources/prod_documents/doc5131.pdf and to
the README file in $TOSROOT/chips/rf2xx/rf230 .

Regards.

--
Giuseppe Cardone
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