hi,
  I am looking at RSSI values from kernel and they seem to be any value not
just 0,128.
I tried checking which kind of errors(RXERR) cause them to show negative
values and large positive values.
It turns out many times RXERR_CRC error causes the it to give random value
and sometimes the value is in bounds [0,128].
So, they are not exclusive.
This leads me to the questions :
(1) Is there a condition I can check which guarantees the RSSI value is
invalid (which may be within 0,128) range ?
(2) I just check for (0,128) range to be valid RSSI value and discard the
rest, in which case, I might be seeing wrong values though they are in
range of (0,128)

Please comment.
-Abhinav
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