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Updated README for rf_environment example

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Robert Olsson 2017-05-08 13:11:22 +02:00
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Non-intrusive monitoring of the RF-environment Non-intrusive monitoring of the RF-environment
============================================== ==============================================
rf_environment runs the clear channel assessment (CCA) test over
rf_environment runs clear channel assessment (CCA) test for over
all 802.15.4 channels and reports stats per channel. The CCA test all 802.15.4 channels and reports stats per channel. The CCA test
is run for different CCA thresholds from -60 to -190 dBm. CCA is a is run for different CCA thresholds from -60dBm to -90dBm. CCA is
non-destructive for the rf-environment it's just listens. a non-destructive for the rf-environment as it's just listens.
Best and worst channel is printed as average rf activity. Best and worst channel is printed as average rf activity.
See example below from Uppsala Kungs-Vaksalagatan. 2017-05-08
and Electrum Stockholm. Originally developed for the Atmel avr-rss2
platform.
Originally developed for the Atmel avr-rss2 platform. Probability for not passing a CCA check in percent per channel.
3-minute samples. Of course this just snapshots to illustrate
functionality
Chan: 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
---------------------------------------------------------------------
cca_thresh=-82dBm 0 0 7 0 1 2 2 0 0 0 0 6 30 5 0 1 Best=11 Worst=23 Ave=3.09
cca_thresh=-80dBm 0 0 1 0 1 0 3 1 0 0 1 16 15 1 2 0 Best=11 Worst=22 Ave=2.31
cca_thresh=-78dBm 0 0 4 10 0 2 2 2 1 2 0 12 23 4 1 1 Best=11 Worst=23 Ave=3.65
cca_thresh=-76dBm 0 0 12 8 4 0 6 4 10 3 1 24 15 0 1 1 Best=11 Worst=22 Ave=5.37
cca_thresh=-74dBm 0 1 1 2 1 0 4 1 2 1 2 10 16 22 5 1 Best=11 Worst=24 Ave=3.96
cca_thresh=-72dBm 0 1 3 3 3 0 2 1 1 4 2 5 3 8 5 3 Best=11 Worst=24 Ave=2.26
cca_thresh=-70dBm 0 0 5 3 3 3 1 5 9 26 60 77 53 35 27 8 Best=11 Worst=22 Ave=19.40
cca_thresh=-68dBm 0 1 9 10 1 2 1 3 0 4 59 32 60 37 24 3 Best=11 Worst=23 Ave=14.89
cca_thresh=-66dBm 0 2 3 2 1 2 2 1 5 15 50 64 77 49 16 5 Best=11 Worst=23 Ave=17.87
cca_thresh=-64dBm 1 3 0 1 1 2 1 1 6 18 19 31 62 47 25 3 Best=13 Worst=23 Ave=13.35
cca_thresh=-62dBm 0 0 3 6 2 5 2 0 23 43 37 25 18 32 27 25 Best=11 Worst=20 Ave=15.14
cca_thresh=-60dBm 2 2 3 3 2 3 1 8 34 37 40 49 72 55 9 9 Best=17 Worst=23 Ave=20.17
cca_thresh=-90dBm 0 1 11 10 4 8 2 1 10 22 15 17 22 18 3 9 Best=11 Worst=20 Ave=9.06
cca_thresh=-88dBm 0 0 17 37 2 3 2 5 12 18 24 43 13 28 6 3 Best=11 Worst=22 Ave=12.90
cca_thresh=-86dBm 0 3 12 2 0 3 3 4 12 11 17 13 42 19 17 10 Best=11 Worst=23 Ave=10.05
cca_thresh=-84dBm 0 0 3 3 0 3 2 4 12 11 14 13 23 9 11 15 Best=11 Worst=23 Ave=7.33
cca_thresh=-82dBm 0 2 30 24 2 4 2 6 3 11 4 10 8 3 4 1 Best=11 Worst=13 Ave=6.66
cca_thresh=-80dBm 0 1 9 3 0 1 6 6 15 0 0 8 11 4 3 3 Best=11 Worst=19 Ave=4.05
cca_thresh=-78dBm 0 1 3 2 0 1 7 8 1 0 4 13 6 3 1 1 Best=11 Worst=22 Ave=2.79
cca_thresh=-76dBm 0 0 1 7 1 8 11 10 21 1 2 10 28 3 0 1 Best=11 Worst=23 Ave=6.15
cca_thresh=-74dBm 0 3 2 2 0 1 6 4 8 0 3 5 8 9 0 0 Best=11 Worst=24 Ave=2.77
cca_thresh=-72dBm 0 0 0 3 1 2 2 2 1 1 3 7 11 9 1 1 Best=11 Worst=23 Ave=2.40
cca_thresh=-70dBm 0 1 11 2 1 2 4 1 4 4 13 31 7 1 1 1 Best=11 Worst=22 Ave=4.69
cca_thresh=-68dBm 0 0 13 26 1 5 7 8 3 1 1 20 43 7 1 0 Best=11 Worst=23 Ave=8.21
cca_thresh=-66dBm 1 2 13 9 1 3 3 1 3 16 11 22 9 7 0 1 Best=25 Worst=22 Ave=5.79
cca_thresh=-64dBm 0 1 6 2 1 2 2 0 3 8 4 8 14 1 4 1 Best=11 Worst=23 Ave=3.10
cca_thresh=-62dBm 0 1 4 0 1 2 1 3 1 1 9 16 22 7 1 1 Best=11 Worst=23 Ave=3.91
cca_thresh=-60dBm 0 1 2 0 1 0 1 1 15 33 4 5 26 2 0 0 Best=11 Worst=20 Ave=5.34
cca_thresh=-90dBm 0 1 0 2 2 0 1 1 0 1 6 12 24 10 2 1 Best=11 Worst=23 Ave=3.64
cca_thresh=-88dBm 0 0 0 2 0 1 0 2 0 2 2 9 10 0 0 1 Best=11 Worst=23 Ave=1.54
Electrum Kista Stockolm (KTH/SICS etc)
cca_thresh=-62dBm 2 17 26 2 2 1 14 18 17 4 9 6 5 31 47 2 Best=16 Worst=25 Ave=12.07
cca_thresh=-60dBm 7 8 13 2 2 1 6 6 7 1 11 32 16 11 1 2 Best=16 Worst=22 Ave=7.54
cca_thresh=-90dBm 1 9 13 3 2 1 31 32 10 2 2 12 7 10 1 2 Best=11 Worst=18 Ave=8.17
cca_thresh=-88dBm 4 8 10 2 2 1 5 12 6 3 5 8 2 9 1 2 Best=16 Worst=18 Ave=4.45
cca_thresh=-86dBm 11 9 10 2 2 1 5 16 21 2 5 5 2 3 1 4 Best=25 Worst=19 Ave=5.88
cca_thresh=-84dBm 4 9 7 5 5 1 6 46 16 3 16 2 13 5 1 2 Best=25 Worst=18 Ave=8.38
cca_thresh=-82dBm 15 9 14 2 2 1 7 22 14 1 15 2 10 10 1 19 Best=25 Worst=18 Ave=8.68
cca_thresh=-80dBm 1 8 16 3 2 1 14 23 6 1 10 22 5 7 3 4 Best=11 Worst=18 Ave=7.38
cca_thresh=-78dBm 16 9 25 3 3 1 9 8 12 2 7 2 3 2 1 2 Best=16 Worst=13 Ave=6.13
cca_thresh=-76dBm 12 9 23 4 4 0 36 9 10 2 32 14 7 4 1 3 Best=16 Worst=17 Ave=10.13
cca_thresh=-74dBm 8 24 9 8 5 0 16 6 10 2 3 31 27 18 1 3 Best=16 Worst=22 Ave=10.32
cca_thresh=-72dBm 4 7 18 4 2 0 6 11 7 1 3 6 3 9 1 2 Best=16 Worst=13 Ave=4.80