Atheros DFS radar detection

[Wright, Brett]

Hi,

> -----Original Message-----
> From: adrian.chadd at gmail.com [mailto:adrian.chadd at gmail.com] On Behalf
> Of Adrian Chadd
> Sent: Thursday, 2 August 2012 6:03 AM
> To: Wright, Brett
> Cc: freebsd-wireless at freebsd.org
> Subject: Re: Atheros DFS radar detection
> 
> Hi,
> 
> These are the AR5212 HAL defaults:
> 
> FIRPWR: -41
> RRSSI: 12
> HEIGHT: 20
> PRSSI: 22
> INBAND: 6

Yes they are the same values that are being set by default.
 
> 
> I'd suggest you bring up an AR5212 on FreeBSD and look at what's done
> in dev/ath/ath_dfs/null/dfs_null.c - I have a set of default
> parameters (but for the AR5416 and later chips, with a specific
> antenna config) which you can change for the AR5212. Then just change
> #if 0 to #if 1 in the dfs enable routine.

Thanks - I will try the parameters you are using for the ar5416 and see
if that reduces the number of false detect pulses.

> I also have a tool in tools/tools/ath/athradar/ which lets you view
> and set the radar parameters. You should tinker with that whilst doing
> some traffic.

OK I will experiment with different values and see if that helps too.

Thanks
Brett