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Re: [PATCH RESEND] ath9k: Fix NF CCA limits for AR9287 and AR9227

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Hm, doesn't someone have a graphical frontend for this on linux?


-a


On 28 July 2015 at 15:07, Martin Blumenstingl
<martin.blumenstingl@xxxxxxxxxxxxxx> wrote:
> On Tue, Jul 28, 2015 at 7:25 PM, Adrian Chadd <adrian@xxxxxxxxxxx> wrote:
>> So the values aren't "bad" on the 1043nd - they're in 1/2 or 1/4dB,
>> but there's no scalar quantity (ie, it's not in dBm.) The 1043nd
>> calibrates down to around -95 or so, which "sounds" like it's in dBm
>> but it isn't, and any similarity is just coincidence.
> Ok, then we'll ignore the 1043nd from now on.
>
>> It does sound like your AR9227 sees noise. can you fire up the
>> spectral analysis stuff to plot what the NIC is seeing? (yes, the
>> AR9287/AR9227 has spectral analysis mode, same as the AR9280, AR9285,
>> and >= AR9300.)
> I am assuming that "background" mode is what you want, see [0].
> Thus I ran the following on my AR9227 device:
> # echo background > /sys/kernel/debug/ieee80211/phy1/ath9k/spectral_scan_ctl
> # echo trigger > /sys/kernel/debug/ieee80211/phy1/ath9k/spectral_scan_ctl
> # cat /sys/kernel/debug/ieee80211/phy1/ath9k/spectral_scan0 > /tmp/samples
>
> The result can be found here: [1].
> Note that at this point no client was connected to my AP. My patch
> (from the initial mail) was applied - but that shouldn't have any
> effect on the spectral scan output (at least that's what I'm
> assuming).
>
> Just for documentation purposes - those are the NF values that I have
> seen a few seconds before getting the spectral scan data:
> # cat /sys/kernel/debug/ieee80211/phy1/ath9k/dump_nfcal
> Channel Noise Floor : -93
> Chain | privNF | # Readings | NF Readings
> 0     -104   5          -109 -109 -109 -104 -104
> 1     -97    5          -97 -97 -97 -97 -97
>
>
> Regards,
> Martin
>
>
> [0] https://wireless.wiki.kernel.org/en/users/drivers/ath9k/spectral_scan
> [1] https://dl.dropboxusercontent.com/u/26940713/tmp/spectral_out
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