Hi Luc,
Sorry for the thread necromancy but I'm not really sure what the norms are
around starting new threads or opening github issues. I'm having the same
issue as uvedhe, but I believe that I am getting data, it just takes a
while.
For example, here's what happens when I run rtldavis directly
pi@wxpi:/ $ $GOPATH/bin/rtldavis -tf US
23:31:41.484368 rtldavis.go VERSION=0.15
23:31:41.485107 tr=1 fc=0 ppm=0 gain=0 maxmissed=51 ex=0 receiveWindow=300
actChan=[0] maxChan=1
23:31:41.485224 undefined=false verbose=false disableAfc=false
deviceString=0
23:31:41.486233 BitRate: 19200
23:31:41.486286 SymbolLength: 14
23:31:41.486329 SampleRate: 268800
23:31:41.486366 Preamble: 1100101110001001
23:31:41.486403 PreambleSymbols: 16
23:31:41.486439 PreambleLength: 224
23:31:41.486479 PacketSymbols: 80
23:31:41.486517 PacketLength: 1120
23:31:41.486553 BlockSize: 512
23:31:41.486589 BufferLength: 2048
Found Rafael Micro R820T tuner
23:31:41.926203 Hop: {ChannelIdx:0 ChannelFreq:902419338 FreqError:0
Transmitter:0}
Exact sample rate is: 268800.001367 Hz
23:31:42.103009 GetTunerGain: 0 Db
23:31:42.103037 SetFreqCorrection 0 ppm Successful
Allocating 1 zero-copy buffers
23:31:42.106932 Init channels: wait max 135 seconds for a message of each
transmitter
23:32:52.437316 TRANSMITTER 0 SEEN
23:32:52.437491 Hop: {ChannelIdx:19 ChannelFreq:911952597 FreqError:0
Transmitter:0}
23:32:54.999338 600557FFC100B25F 2 0 0 0 0 msg.ID=0
23:32:54.999764 Hop: {ChannelIdx:41 ChannelFreq:922991108 FreqError:0
Transmitter:0}
23:32:57.561300 80055C206900FA0A 3 0 0 0 0 msg.ID=0
23:32:57.561605 Hop: {ChannelIdx:25 ChannelFreq:914963100 FreqError:0
Transmitter:0}
23:33:00.124869 E0045C800300563E 4 0 0 0 0 msg.ID=0
23:33:00.125445 Hop: {ChannelIdx:8 ChannelFreq:906433342 FreqError:0
Transmitter:0}
23:33:02.686749 500359FF73008A63 5 0 0 0 0 msg.ID=0
23:33:02.686858 Hop: {ChannelIdx:47 ChannelFreq:926001611 FreqError:0
Transmitter:0}
23:33:05.248703 400358FD0100E608 6 0 0 0 0 msg.ID=0
23:33:05.248811 Hop: {ChannelIdx:32 ChannelFreq:918475353 FreqError:0
Transmitter:0}
23:33:07.812769 800456205B005B07 7 0 0 0 0 msg.ID=0
23:33:07.812888 Hop: {ChannelIdx:13 ChannelFreq:908942094 FreqError:0
Transmitter:0}
23:33:10.374274 E00362800300BF59 8 0 0 0 0 msg.ID=0
23:33:10.374381 Hop: {ChannelIdx:36 ChannelFreq:920482355 FreqError:0
Transmitter:0}
23:33:12.936296 500458FF7100FD61 9 0 0 0 0 msg.ID=0
As you can see, it takes >60s to start parsing data. When I try to run the
weewx driver, it crashes after ~10s
23:19:53.355369 Init channels: wait max 135 seconds for a message of each
transmitter
Traceback (most recent call last):
File "/usr/share/weewx/user/rtldavis.py", line 1407, in <module>
payload = lines[0].strip()
IndexError: list index out of range
Sometimes rtldavis is faster or slower, but rarely does it start in <10s.
>From reading other comments, it sounds like the driver times out after 10s
of no data here.
Any ideas what might be happening here? The antenna that I have on there is
a cheap set of rabbit ears (dipole), could certainly get a better one, the
station is about 80ft (25m) away on the roof of the next building over.
Hardware is a raspberry pi and and an RTL-SDR blog brand R820T2 RTL2832U
SDR. Pi is running latest raspbian.
Thank you for all your hard work, I am so close!
On Wednesday, May 8, 2019 at 1:37:45 AM UTC-7 [email protected] wrote:
> uvedhe wrote on github :
>>
> 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 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}
>>
>> Hi uvedhe,
>
> The rtldavis log show you didn't receive any data.
>
> The rtldavis program use default the EU-frequencies. You use the EU
> version of the Davis Vantage, right?
> The program runs succesfully on a Raspberry PI, Not sure if it will run on
> OS X 10 too.
>
> You could try to run the rtldavis program with several other ppm settings
> to check if any data will b read like:
> $GOPATH/bin/rtldavis -ppm 3
> or
> $GOPATH/bin/rtldavis -ppm -3
>
> Luc
>
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