On Mar 1, 2007, at 11:12 AM, Jiakang Lu wrote:
Philip Levis wrote:
On Mar 1, 2007, at 10:41 AM, Jiakang Lu wrote:
Hi all,
Suppose we receive a packet from radio. How can we get the value
of RSSI in that packet? Other than pointing directly to the
metadata location, do we have any interface to get this value?
If it's a CC2420 platform, CC2420Packet is the interface you want.
Phil
Thank you.
One more question: how's the RSSI value represent in T2? The same
as TinyOS-1.x, rssi = (rssi >= 0) rssi : rssi + 256?
I believe that the CC2420 RSSI value is the raw value from the radio.
Please refer to the data sheet for details. It's a 2's complement
signed number with a constant offset of something like -42 or -45.
Phil
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