Hi Oleksij, For the AR9721 chipset, the spectral count should be set to 0. Also, for the AR 9271 chipset, I get more stable results in monitor mode.
I've tested it in the following mode:- 1. Create the monitor interface. WLAN_INTF=wlan3 # Change accordingly to client interface. PHY_INTF=phy0 # For the ath9k_htc phy interface. MON_INTF=moni0 iw dev $WLAN_INTF del iw phy $PHY_INTF interface add $MON_INTF type monitor ifconfig moni0 up iwconfig 2. Initiate the spectral scan. echo background > /sys/kernel/debug/ieee80211/phy0/ath9k_htc/spectral_scan_ctl; echo trigger > /sys/kernel/debug/ieee80211/phy0/ath9k_htc/spectral_scan_ctl; 3. Write output to file (Get endless samples). while [ 1 ]; do echo "Writing"; sudo cat /sys/kernel/debug/ieee80211/phy0/ath9k_htc/spectral_scan0 >> /tmp/tmp_fft; wc -l /tmp/tmp_fft; sleep 1; done 4. Check the FFT output ./fft_eval /tmp/fft_results Thanks Ashish On Tue, Apr 29, 2014 at 1:52 AM, Oleksij Rempel <li...@rempel-privat.de>wrote: > Hm... it compiles but i didn't go any results with my script: > > sudo bash -c "echo chanscan > > /sys/kernel/debug/ieee80211/phy1/ath9k_htc/spectral_scan_ctl" > sudo bash -c "echo 8 > > /sys/kernel/debug/ieee80211/phy1/ath9k_htc/spectral_count" > > for i in $(seq 1 44); do > sudo iw dev wlan-test scan > sleep 1 > done > > sudo bash -c "cat > /sys/kernel/debug/ieee80211/phy1/ath9k_htc/spectral_scan0 > > /tmp/fft_results" > sudo bash -c "echo 8 > > /sys/kernel/debug/ieee80211/phy1/ath9k_htc/spectral_count" > > sudo bash -c "echo disable > > /sys/kernel/debug/ieee80211/phy1/ath9k_htc/spectral_scan_ctl" > > ./fft_eval /tmp/fft_results > > Am 25.04.2014 10:12, schrieb Ashish Patro: > > > > The patches move the common components of spectral scan funcationality > to common-spectral.c. > > > > Also added spectral scan support to ath9k_htc using the same mechanism > to collect spectral scan data as used by ath9k driver. > > > > This work was done at the Wisconsin Wireless and NetworkinG Systems > (WiNGS) Lab at the University of Wisconsin Madison. > > > > Ashish Patro (3): > > Moving the ath9k specific spectral functions to ath9k.h from > > spectral.h. Renamed spectral.h to common-spectral.h > > Refactoring the ath9k driver to move common spectral functions to > > common-spectral.c > > Update spectral scan calls to support both ath9k and ath9k_htc. > > Adding spectral scan functionality to ath9k_htc driver. Tested > > using a AR9271 WiFi card. > > > > drivers/net/wireless/ath/ath9k/Makefile | 3 +- > > drivers/net/wireless/ath/ath9k/ar9002_phy.c | 11 +- > > drivers/net/wireless/ath/ath9k/ath9k.h | 9 +- > > drivers/net/wireless/ath/ath9k/common-spectral.c | 213 +++++++++++++ > > drivers/net/wireless/ath/ath9k/common-spectral.h | 199 ++++++++++++ > > drivers/net/wireless/ath/ath9k/htc.h | 13 + > > drivers/net/wireless/ath/ath9k/htc_drv_debug.c | 3 + > > drivers/net/wireless/ath/ath9k/htc_drv_init.c | 8 + > > drivers/net/wireless/ath/ath9k/htc_drv_main.c | 75 +++++ > > drivers/net/wireless/ath/ath9k/htc_drv_spectral.c | 353 > +++++++++++++++++++++ > > drivers/net/wireless/ath/ath9k/htc_drv_txrx.c | 17 + > > drivers/net/wireless/ath/ath9k/recv.c | 7 +- > > drivers/net/wireless/ath/ath9k/spectral.c | 187 ----------- > > drivers/net/wireless/ath/ath9k/spectral.h | 212 ------------ > > 14 files changed, 905 insertions(+), 405 deletions(-) > > create mode 100644 drivers/net/wireless/ath/ath9k/common-spectral.c > > create mode 100644 drivers/net/wireless/ath/ath9k/common-spectral.h > > create mode 100644 drivers/net/wireless/ath/ath9k/htc_drv_spectral.c > > delete mode 100644 drivers/net/wireless/ath/ath9k/spectral.h > > > > > -- > Regards, > Oleksij > > > _______________________________________________ > ath9k-devel mailing list > ath9k-devel@lists.ath9k.org > https://lists.ath9k.org/mailman/listinfo/ath9k-devel > >
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