Re: Getting GPS data into stream

[Fabian Schwartau]

Hi everyone,

I think I got hit by https://github.com/gnuradio/gnuradio/issues/5568.
Exactly the same error message. Is there any update on that issue or a 
workaround?
Attached are my files.

Best,
Fabian

Am 03.05.23 um 21:01 schrieb Marcus D. Leech:
> On 03/05/2023 14:59, Fabian Schwartau wrote:
> > Sorry, forget it. Wrong sink...
> You probably want:
>
> https://wiki.gnuradio.org/index.php/File_Meta_Sink
> > Am 03.05.23 um 20:52 schrieb Fabian Schwartau:
> > > OK, I think I found an easier way (at least for me), without having 
> > > to write my own module - never done that.
> > > I used the "Tags Strobe" block in combination with the "Python 
> > > Module" for my gps_get_position() function.
> > > Anyway, where can I find a definition of the format of the "Tagged 
> > > File Sink"? I need to read this with antoher program, without 
> > > gnuradio, but in python.
> > >
> > > Best,
> > > Fabian
> > >
> > > Am 03.05.23 um 20:04 schrieb Marcus Müller:
> > > > Hi Fabian,
> > > >
> > > > I'd write a block that copies a stream in- to output. It might query 
> > > > gpsd every time the work() function is called, or have a FIFO into 
> > > > which data from gspd is being pushed by a separate thread (or by 
> > > > reading from a socket or however gspd works, I must admit I'm not 
> > > > sure).
> > > >
> > > > You then take that info, and encode the long, lat, uncertainty as 
> > > > (double, double, double) PMT tuple. You then use add_item_tag to add 
> > > > that PMT to the first sample in your output buffer.
> > > >
> > > > You'd feed the result into a metadata file sink block: That saves 
> > > > things in a serialized format ready for retrieval.
> > > >
> > > > Best,
> > > > Marcus
> > > >
> > > > On 5/3/23 19:52, Fabian Schwartau wrote:
> > > > > Hi everyone,
> > > > >
> > > > > I am trying to record some data from an SDR and would like to 
> > > > > sync/tag the data with the current gps position from gpsd. I am 
> > > > > kind of stuck and don't know how a possible solution for that might 
> > > > > look like in grc.
> > > > > I have a python function that gets the current position as a tuple, 
> > > > > but how do I get this into my data stream, which I would like to 
> > > > > write to a CSV file or similar?
> > > > > I am not asking for a solution of my problem, just point me in the 
> > > > > right direction ;)
> > > > >
> > > > > Best,
> > > > > Fabian

data.bin.zip
Description: Zip archive

readdatatest.py
Description: Text Data

recorder.grc
Description: application/gnuradio-grc