gfiber spectral

gistfile1.txt

Code from https://gfiber.googlesource.com/vendor/google/platform/+/master/spectralanalyzer/
Slight modifications to use USB wifi based on the ath9k chipset

# quiet time
# ./spectral
Starting background spectral scanner
Performing wifi spectral scan at freq 2412
Performing wifi spectral scan at freq 2417
Performing wifi spectral scan at freq 2422
Performing wifi spectral scan at freq 2427
Performing wifi spectral scan at freq 2432
Performing wifi spectral scan at freq 2437
Performing wifi spectral scan at freq 2442
Performing wifi spectral scan at freq 2447
Performing wifi spectral scan at freq 2452
Performing wifi spectral scan at freq 2457
Performing wifi spectral scan at freq 2462
fft- 1:  97
fft- 2:  97
fft- 3:  97
fft- 4:  97   1
fft- 5:  96   2   1
fft- 6:  96   2   1
fft- 7:  96   2
fft- 8:  97   1
fft- 9:  98
fft-10:  99
fft-11:  99

# iperf on channel 1
# ./spectral
Starting background spectral scanner
Performing wifi spectral scan at freq 2412
Performing wifi spectral scan at freq 2417
Performing wifi spectral scan at freq 2422
Performing wifi spectral scan at freq 2427
Performing wifi spectral scan at freq 2432
Performing wifi spectral scan at freq 2437
Performing wifi spectral scan at freq 2442
Performing wifi spectral scan at freq 2447
Performing wifi spectral scan at freq 2452
Performing wifi spectral scan at freq 2457
Performing wifi spectral scan at freq 2462
fft- 1:  67   2   1               1   9  14   2
fft- 2:  58   2   3   6   4   1   1   8  11   1
fft- 3:  52   4   7  10   5   1   1   6   9   1
fft- 4:  53   8   9  10   5   1       4   4
fft- 5:  62  10   9  10   5
fft- 6:  72  10   7   6   2
fft- 7:  85   8   3   1
fft- 8:  93   3
fft- 9:  96   1
fft-10:  97                               1
fft-11:  98