osmocom-sdr August 2019

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10 discussions

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gr-osmosdr: add clock_source= parameter
by Michael Loeffler 26 Mar '21

26 Mar '21

Hello, the attached patch allows to set the clock_source on uhd devices in programs like gqrx. Bye

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AW: Re: AW: Re: DVB-T2
by Ingo.Wolf＠gmx.de 27 Aug '19

27 Aug '19

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AW: Re: DVB-T2
by Ingo.Wolf＠gmx.de 26 Aug '19

26 Aug '19

2 1

DVB-T2 RTL2832U SDR
by Ingo.Wolf＠gmx.de 25 Aug '19

25 Aug '19

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DVB-T2
by Ingo.Wolf＠gmx.de 24 Aug '19

24 Aug '19

2 1

Coding Support
by Hudspeth, Robert Lee 16 Aug '19

16 Aug '19

Hello! I am an undergraduate student at Oregon State University working with RTL-SDR dongles for an academic project under supervision from Benjamin Brewster, and I had a dev question. I'm trying to run utilities that capture 978 <https://github.com/mutability/dump978> & 1090Mhz <https://github.com/mutability/dump1090> traffic simultaneously, but I can't seem to stop rtl_sdr from allocating too many zero-copy buffers and preventing both programs from running simultaneously (I'd like to cut down from 15). I've been through librtlsdr.c and rtl_adsb.c with the hope of manually changing some variable that will let me accomplish this to no avail. Is there some line I might have overlooked, or some additional parameter(s) I might need to enter?

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Re: Coding Support
by Hudspeth, Robert Lee 15 Aug '19

15 Aug '19

Thank you for your email, and I appreciate the communication. I did have one last question: If I were to make a change to the code and need to recompile it, are the steps the same ones listed on the wiki under "building the software", or is there a different make process? On Thu, Aug 15, 2019, 10:51 AM Karl <gmkarl(a)gmail.com> wrote: > Hi Robert, > > It sounds like you're looking for the `buf_num` argument to > rtlsdr_read_async. This is in rtl-sdr.h: > https://git.osmocom.org/rtl-sdr/tree/include/rtl-sdr.h#n362 . > > I run into problems like that all the time, myself. Due to my issues, > I've found it hard to collaborate on this project myself. See mailing > list archive of contributions that were minimally addressed. I try to > focus around communication that's more reliable than radio now, like > memo.cash . > > But I'm still passionate about helping rtl-sdr grow. > > Karl > > On 8/15/19, Hudspeth, Robert Lee <hudspero(a)oregonstate.edu> wrote: > > Hello! I am an undergraduate student at Oregon State University working > > with RTL-SDR dongles for an academic project under supervision from > > Benjamin Brewster, and I had a dev question. > > > > I'm trying to run utilities that capture 978 > > <https://github.com/mutability/dump978> & 1090Mhz > > <https://github.com/mutability/dump1090> traffic simultaneously, but I > > can't seem to stop rtl_sdr from allocating too many zero-copy buffers and > > preventing both programs from running simultaneously (I'd like to cut > down > > from 15). I've been through librtlsdr.c and rtl_adsb.c with the hope of > > manually changing some variable that will let me accomplish this to no > > avail. > > > > Is there some line I might have overlooked, or some additional > parameter(s) > > I might need to enter? > > >

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Aw: Coding Support
by Ingo Wolf 15 Aug '19

15 Aug '19

1 0

AW: Re: sdr# version rtlsdr
by Ingo.Wolf＠gmx.de 15 Aug '19

15 Aug '19

4 3

sdr# version rtlsdr
by Ingo.Wolf＠gmx.de 13 Aug '19

13 Aug '19

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osmocom-sdr August 2019