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Re: [Discuss-gnuradio] TV card SDR
From: |
Martin Dvh |
Subject: |
Re: [Discuss-gnuradio] TV card SDR |
Date: |
Thu, 12 Apr 2007 03:05:09 +0200 |
User-agent: |
Debian Thunderbird 1.0.2 (X11/20070113) |
Hew How Chee wrote:
> Hi,
>
> For anyone interested, the CX2388x TV card chipset raw
> ADC data driver for Linux kernel 2.6.18 is available
> at
>
> http://www.geocities.com/how_chee/cx23881fc6.htm
I wrote gr-cxadc which is a gnuradio wrapper to use the cxadc driver from any
gnuradio script, just like the gr-usrp does for the usrp.
So you don't need to capture to file first anymore.
I also wrote some example scripts which work fine (including GUI).
I haven't implemented tuning yet, because we need a mor general approach for
the different tuners out-there.
(Maybe use the way this is done in v4l drivers)
For now I just hooked the IF-output of my TVRX to the video-input of the
cx2388xx TV-tuner card.
(I then can tune the TVRX tuner using the usrp, but all the capturing is done
using the tv-card / cxadc)
You can find the files at:
http://www.olifantasia.com/projects/gnuradio/mdvh/cx2388x/cxadc/
cxadc_examples.tar.gz example scripts (copied from usrp examples and modified
to work with gr-cxadc)
cx2388x_oscope.py
cxadc_fft.py
cxadc_rx_cfile.py
cxadc_wfm_rcv.py
cxadc_wfm_rcv_nogui.py
cxadc_v3.tar.gz The kernel driver written by Hew How Chee
gr-cxadc-0.1cvs.tar.gz The gnuradio code to use it from gnuradio
I also added it all to my section of the svn repository at:
http://gnuradio.org/trac/browser/gnuradio/branches/developers/nldudok1/general-wip
Make sure you read cxadc_v3/readme and the page by Hew How Chee at
http://www.geocities.com/how_chee/cx23881fc6.htm
Greetings,
Martin
>
> A GNU Radio Python FM demodulation code is provided
> also to see how the ADC samples are converted and
> processed offline.
>
> Regards,
> Hew
> p/s : the site might become unavailable due to
> bandwidth limit.
>
>
>
>
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