RTL2832 GNU Radio Source block now in gr-baz ('mad' fix applied)

Balint Seeber balint256 at gmail.com
Sat Mar 31 01:22:03 UTC 2012

Dear Mad,

Thank you very much for identifying this bug, adding a new device and
sending the patch!
I have added it all to the code on SVN, githib and the Windows plugin.

As for the second issue, I can't shed any light on that. I'm actually still
on 3.3 and 3.4 - I need to get with the 'program' :)

Kind regards,

> -----Original Message-----
> From: mad [mailto:mad at auth.se]
> Sent: Saturday, 31 March 2012 10:44 AM
> To: Balint Seeber
> Cc: osmocom-sdr at lists.osmocom.org
> Subject: Re: RTL2832 GNU Radio Source block now in gr-baz
> Hi Balint, hi list!
> Nice work creating a gnuradio source out of rtl-sdr, thank you for that.
> But I've tested it using a Dexatek DVB-T Dongle which uses a FC0013 tuner
> and there are two issues I ran into.
> First, there is the wrong handling of a return value when setting the
> frequency on the FC0013.
> The attached patch integrates the Dexatek and fixes that issue.
> But the second one isn't as easy to fix because I guess you would need
> some more insight into how a Gnuradio block is constructed to do that.
> The following python std::runtime_error exception is thrown in grc
> everytime a graph using the RTL2832 source is started.
> [...]
> Wait delay: 11,130 ms
> >>> gr_fir_fff: using SSE
> Traceback (most recent call last):
>   File "/home/mad/gr/top_block.py", line 109, in <module>
>     tb = top_block()
>   File "/home/mad/gr/top_block.py", line 82, in __init__
>     self.connect((self.rtl2832_source_0, 0), (self.blks2_wfm_rcv_0, 0))
>   File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/top_block.py",
> line 124, in connect
>     self._connect(points[i-1], points[i])
>   File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/top_block.py",
> line 129, in _connect
>     self._tb.primitive_connect(src_block.to_basic_block(), src_port,
> AttributeError: 'baz_rtl_source_c_sptr' object has no attribute
> 'to_basic_block'
> Perhaps you have some idea about that.
> BTW, I'm using Gnuradio with 2.7.2+ Python, your feaf6c commit of
> gr-baz and using stand-alone rtl-sdr the stick works well.
> Regards,
>   Mad

More information about the osmocom-sdr mailing list