uvedhe wrote on github the following comment.
I will answer this in the weewx-rtldavis topic in the weewx-development
forum.
Luc
uvedhe <https://github.com/uvedhe> commented 14 hours ago
<https://github.com/lheijst/weewx-rtldavis/issues/1#issue-441358316>
I'm trying to read in wind data from my weather station into a Python
script, to then be able to do some calculations with the data. I discovered
WeeWX and thought this was the way to go. Now I've been trying to get the
RTL Davis driver to work. I'm using an RTL-SDR v3 dongle on OS X 10.13. I
can successfully run $GOPATH/bin/rtldavis which returns various entries,
like these:
19:10:43.856163 Init channels: wait max 17 seconds for a message of each
transmitter
19:11:01.793521 Init channels: wait max 17 seconds for a message of each
transmitter
19:11:01.794049 Hop: {ChannelIdx:0 ChannelFreq:868077250 FreqError:0}
19:11:19.732536 Init channels: wait max 17 seconds for a message of each
transmitter
19:11:19.732580 Hop: {ChannelIdx:0 ChannelFreq:868077250 FreqError:0}
Now I was hoping to actually get some data out, so I thought I needed to
install the rtldavis driver. Install all went successfully, but when I run
PYTHONPATH=bin
python bin/user/rtldavis.py --cmd="/Users/user/go/bin/rtldavis" I get the
error IndexError: list index out of range.
Not sure where it's going wrong?
Here's the full output:
19:03:46.160784 rtldavis.go VERSION=0.12
19:03:46.161047 tr=1 fc=0 ppm=0 gain=0 ex=0 maxmissed=51 actChan=[0] maxChan=1
19:03:46.161326 BitRate: 19200
19:03:46.161340 SymbolLength: 14
19:03:46.161347 SampleRate: 268800
19:03:46.161359 Preamble: 1100101110001001
19:03:46.161368 PreambleSymbols: 16
19:03:46.161375 PreambleLength: 224
19:03:46.161387 PacketSymbols: 80
19:03:46.161394 PacketLength: 1120
19:03:46.161405 BlockSize: 512
19:03:46.161411 BufferLength: 2048
Found Rafael Micro R820T tuner
19:03:46.610555 Hop: {ChannelIdx:0 ChannelFreq:868077250 FreqError:0}
Exact sample rate is: 268800.001367 Hz
19:03:46.814340 GetTunerGain: 0 Db
19:03:46.814362 SetFreqCorrection 0 ppm Successful
19:03:46.818456 Init channels: wait max 17 seconds for a message of each
transmitter
Traceback (most recent call last):
File "bin/user/rtldavis.py", line 1337, in <module>
payload = lines[0].strip()
IndexError: list index out of range
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