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Em 24/08/2016 22:55, osmocom-sdr-request@lists.osmocom.org escreveu:
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Today's Topics:
- PATCH: Fixed arbitrary resampling in rtl_fm (f.meyer-hermann@gsg-elektronik.de)
- Uccess! My first librtlsdr application (Neoklis Kyriazis)
- Re: Uccess! My first librtlsdr application (Lucas Teske)
- Fwd: Development of rtl-sdr driver (Piotr Krysik)
- RTL-SDR and RTL-TCP drivers (Krzysztof Halasa)
- [PATCH] RTL-SDR: convert _lut to float[] to reduce size by a factor of 256 (Krzysztof Halasa)
- [PATCH] RTL-TCP: Convert to single class model (Krzysztof Halasa)
Message: 1 Date: Mon, 25 Jul 2016 13:13:13 +0200 From: f.meyer-hermann@gsg-elektronik.de To: osmocom-sdr@lists.osmocom.org Subject: PATCH: Fixed arbitrary resampling in rtl_fm Message-ID: 20160725111313.GA15278@gsg-elektronik.de Content-Type: text/plain; charset=us-ascii
As already on github, I fixed rtl_fm's arbitrary resampling by fixing the output buffer length and allowing upsampling by copying the audio data since the algorithm cannot work in-place. I have attached a patch, if you are interested to integrate it into the official branch. Regards,
Ferdinand Meyer-Hermann
Message: 2 Date: Fri, 5 Aug 2016 05:09:49 +0000 (UTC) From: Neoklis Kyriazis nkcyham@yahoo.com To: "osmocom-sdr@lists.osmocom.org" osmocom-sdr@lists.osmocom.org Subject: Uccess! My first librtlsdr application Message-ID: 1565657774.9528793.1470373789409.JavaMail.yahoo@mail.yahoo.com Content-Type: text/plain; charset=UTF-8
Hi
First, my thanks to everyone involved with the development and release of librtlsdr. Well done. :-)
I always wanted to try my hand building an SDR application and so I installed the latest librtlsdr and started writing code
to test the various functions in the librtlsdr library. Having gotten familiar with this, I started work on modifying my old Wx satellite APT image decoder app, xwxapt, to support an rtlsdr receiver beside the linear VHF receiver it was written for.
Its always difficult to extensively modify an existing app, but in the end it all worked out well and xwxapt can now receive the old APT format images from Wx sats with the rtl-sdr receiver. In the process, I modified xwxapt to include controls for the rtl-sdr unit, display an FFT-derived spectrum of the 2.4kHz sub-carrier and a spectrum of the baseband O/P of the RTL2832 device. Images are decoded in real time and displayed incrementally in xwxapt's window. xwxapt is available under the GPL at:
http://www.5b4az.org/ in Weather Imaging->Image Decoders menu.
-- Best Regards Neoklis - Ham Radio Call:5B4AZ http://www.5b4az.org/
Message: 3 Date: Fri, 5 Aug 2016 13:29:29 -0300 From: Lucas Teske lucas@teske.net.br To: osmocom-sdr@lists.osmocom.org Subject: Re: Uccess! My first librtlsdr application Message-ID: fb16ab1f-4ff9-3ba5-04a0-5b1231fa72ef@teske.net.br Content-Type: text/plain; charset="utf-8"
Nice Neoklis!
It looks good, I will give a try on the weekend :D
Btw, you should post the source-code at github, in this way it is easier to submit patches and stuff.
Lucas
Em 05/08/2016 02:09, Neoklis Kyriazis escreveu:
Hi
First, my thanks to everyone involved with the development and release of librtlsdr. Well done. :-)
I always wanted to try my hand building an SDR application and so I installed the latest librtlsdr and started writing code
to test the various functions in the librtlsdr library. Having gotten familiar with this, I started work on modifying my old Wx satellite APT image decoder app, xwxapt, to support an rtlsdr receiver beside the linear VHF receiver it was written for.
Its always difficult to extensively modify an existing app, but in the end it all worked out well and xwxapt can now receive the old APT format images from Wx sats with the rtl-sdr receiver. In the process, I modified xwxapt to include controls for the rtl-sdr unit, display an FFT-derived spectrum of the 2.4kHz sub-carrier and a spectrum of the baseband O/P of the RTL2832 device. Images are decoded in real time and displayed incrementally in xwxapt's window. xwxapt is available under the GPL at:
http://www.5b4az.org/ in Weather Imaging->Image Decoders menu.
-- Best Regards Neoklis - Ham Radio Call:5B4AZ http://www.5b4az.org/
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CT2FZI IM58kr