Missing 5Ghz mappings

[qhaas]

First off, thank you for taking over this project and updating it! Many other wifi related Python packages are abandoned...

I created the attached file to loop over available frequencies and attempt to map their channel using this util function, but some mappings do not exist, e.g.:

$ cat test_channels.py
import pyric.pyw as pyw
import pyric.utils.channels as pyu

wlan0 = pyw.getcard('wlp3s0')
pinfo = pyw.phyinfo(wlan0)

for band in pinfo['bands']:
    for freq in pinfo['bands'][band]['rfs']:
        channel = pyu.rf2ch(freq)
        print('band {} freq {} channel {}'.format(band, freq, channel))
...
$ python3 test_channels.py
...
band 5GHz freq 5340 channel None
band 5GHz freq 5360 channel None
band 5GHz freq 5380 channel None
band 5GHz freq 5400 channel None
band 5GHz freq 5420 channel None
band 5GHz freq 5440 channel None
band 5GHz freq 5460 channel None
band 5GHz freq 5480 channel None
...
band 5GHz freq 5845 channel None
band 5GHz freq 5865 channel None
band 5GHz freq 5885 channel None
band 5GHz freq 5905 channel None

I'm almost inclined to think it is worth just creating a for loop to populate the feq/channel mappings for all possible 5ghz channels