Luc
Running the updated driver and the driver exits after 5 hops.
pi@raspberrypi:~/work/src/github.com/lheijst/rtldavis $
$GOPATH/bin/rtldavis -tf US
08:39:53.358822 rtldavis.go VERSION=0.10
08:39:53.359302 tr=1 fc=0 ex=0 actChan=[0] maxChan=1
08:39:53.360076 BitRate: 19200
08:39:53.360126 SymbolLength: 14
08:39:53.360163 SampleRate: 268800
08:39:53.360197 Preamble: 1100101110001001
08:39:53.360231 PreambleSymbols: 16
08:39:53.360264 PreambleLength: 224
08:39:53.360300 PacketSymbols: 80
08:39:53.360334 PacketLength: 1120
08:39:53.360367 BlockSize: 512
08:39:53.360403 BufferLength: 2048
Detached kernel driver
Found Rafael Micro R820T tuner
08:39:54.067981 {ChannelIdx:0 ChannelFreq:902348338 FreqError:0}
Exact sample rate is: 268800.001367 Hz
08:39:54.250524 Init channels: wait max 133 seconds for a message of each
transmitter
08:40:09.034419 TRANSMITTER 0 SEEN
08:40:09.035983 Hop: {ChannelIdx:19 ChannelFreq:911881597 FreqError:1}
08:40:11.660667 ID:0 packet missed (1), missed per freq: [0 1 0 0 0]
08:40:11.660862 Hop: {ChannelIdx:41 ChannelFreq:922920108 FreqError:1}
08:40:14.222586 ID:0 packet missed (2), missed per freq: [0 1 1 0 0]
08:40:14.222956 Hop: {ChannelIdx:25 ChannelFreq:914892100 FreqError:1}
08:40:16.786159 ID:0 packet missed (3), missed per freq: [0 1 1 1 0]
08:40:16.786331 Hop: {ChannelIdx:8 ChannelFreq:906362342 FreqError:1}
08:40:19.347335 ID:0 packet missed (4), missed per freq: [0 1 1 1 1]
08:40:19.347864 Hop: {ChannelIdx:47 ChannelFreq:925930611 FreqError:1}
Reattached kernel driver
pi@raspberrypi:~/work/src/github.com/lheijst/rtldavis $
$GOPATH/bin/rtldavis -tf US
08:40:39.278607 rtldavis.go VERSION=0.10
08:40:39.279097 tr=1 fc=0 ex=0 actChan=[0] maxChan=1
08:40:39.279869 BitRate: 19200
08:40:39.279915 SymbolLength: 14
08:40:39.279952 SampleRate: 268800
08:40:39.279986 Preamble: 1100101110001001
08:40:39.280019 PreambleSymbols: 16
08:40:39.280052 PreambleLength: 224
08:40:39.280086 PacketSymbols: 80
08:40:39.280121 PacketLength: 1120
08:40:39.280154 BlockSize: 512
08:40:39.280187 BufferLength: 2048
Detached kernel driver
Found Rafael Micro R820T tuner
08:40:39.924789 {ChannelIdx:0 ChannelFreq:902348338 FreqError:0}
Exact sample rate is: 268800.001367 Hz
08:40:40.107675 Init channels: wait max 133 seconds for a message of each
transmitter
08:42:19.723712 TRANSMITTER 0 SEEN
08:42:19.724272 Hop: {ChannelIdx:19 ChannelFreq:911881597 FreqError:-2}
08:42:22.350093 ID:0 packet missed (1), missed per freq: [0 1 0 0 0]
08:42:22.350451 Hop: {ChannelIdx:41 ChannelFreq:922920108 FreqError:-2}
08:42:24.911968 ID:0 packet missed (2), missed per freq: [0 1 1 0 0]
08:42:24.912173 Hop: {ChannelIdx:25 ChannelFreq:914892100 FreqError:-2}
08:42:27.476009 ID:0 packet missed (3), missed per freq: [0 1 1 1 0]
08:42:27.476204 Hop: {ChannelIdx:8 ChannelFreq:906362342 FreqError:-2}
08:42:30.038732 ID:0 packet missed (4), missed per freq: [0 1 1 1 1]
08:42:30.039073 Hop: {ChannelIdx:47 ChannelFreq:925930611 FreqError:-2}
Reattached kernel driver
pi@raspberrypi:~/work/src/github.com/lheijst/rtldavis $
Thanks
Rich
On Sunday, March 24, 2019 at 7:24:17 AM UTC-4, [email protected] wrote:
>
> 2019-03-24 NEW RELEASE rtldavis
>
> main.go version 0.10 (commit 5858894)
> protocol.go version 0.9 (commit e8ff83d)
>
> Changes:
>
> - Fixed wrong calculation of next hop index in some situations.
>
> - Addaed presentation of missed number of messages per channel.
> Note: The missed number of messages should be spread equaly over the
> channels.
> When some channels have much higher error numbers than average,
> this may indicate a not optimal channel frequency.
>
> - Added frequency correction.
> Note: Each RTL-SDR device will have its own frequency error.
> The same with the Davis equipment: each Davis transmitter will haave its
> own frequency error.
> Also each frequency channel will have its own frequency error.
> protocol.go version 9 calculates per Davis transmitter and per channel
> the average frequency error over the last 10 occurrences and use this
> value to correct
> the next frequency for the next time the same transmitter and frequency
> channel is selceted.
>
> - Updated channel frequencies EU and US
> Based upon recent test values.
>
> Luc
>
