[ath9k-devel] Spectral Scan in ath9k

[Alex Hacker <hacker@epn.ru>]

On Thu, May 31, 2012 at 12:19:08PM -0700, Adrian Chadd wrote:
> Argh, there's more to it.. :-)
> 
> For AR9160 and later, you can enable the FFT bit in one of the radar
> registers and you'll get some FFT reports for longer radar pulses.
> It's enabled by default in the code that we've committed to ath9k and
> FreeBSD HAL.
> 
> Spectral scan mode is related but different (and not in AR9160.)
> 
> So for longer pulses, you'll get RADAR payload (phyerr code = 5) which
> may just have the pri/ext pulse duration and some config info, or it
> may have a series of FFT reports first. That's just for radar stuff
> though, it's not spectral scan.
> 
> That's why he mentioned code = 5 or code = 38.
> 
> 
> Adrian

Hi Adrian.
Yes, I'm thinking same way. You right, some additional information required.
But for guys who have an interest and time to do some reverse engineering we
give a starting point. :) Just another more clear hint for them. Look into
published DFS code (it's low level part) and HW radar filter parameters in
AR_PHY_RADAR_* registers.

Best regards to you,
Alex.