Re: [Discuss-gnuradio] More Questions

[DJCarlson]

at least now I have errors.....

When I run with ?O plughw:0.0 I get:

?
address@hidden usrp]# ./usrp_wfm_rcv.py -R A -f 102.5M -O plughw:0.0 Using
RX d'board A: TV Rx Rev 3
>>> gr_fir_ccf: using 3DNow!
>>> gr_fir_fff: using 3DNow!
audio_oss_sink: plughw:0.0: No such file or directory Traceback (most recent
call last):
  File "./usrp_wfm_rcv.py", line 268, in ?
    app = stdgui.stdapp (wfm_rx_graph, "USRP WFM RX")
  File
"/usr/local/lib/python2.4/site-packages/gnuradio/wxgui/stdgui.py", line 36,
in __init__
    wx.App.__init__ (self, redirect=False)
  File
"/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_core.py", line
7700, in __init__
    self._BootstrapApp()
  File
"/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_core.py", line
7352, in _BootstrapApp
    return _core_.PyApp__BootstrapApp(*args, **kwargs)
  File
"/usr/local/lib/python2.4/site-packages/gnuradio/wxgui/stdgui.py", line 39,
in OnInit
    frame = stdframe (self.flow_graph_maker, self.title, self._nstatus)
  File
"/usr/local/lib/python2.4/site-packages/gnuradio/wxgui/stdgui.py", line 60,
in __init__
    self.panel = stdpanel (self, self, flow_graph_maker)
  File
"/usr/local/lib/python2.4/site-packages/gnuradio/wxgui/stdgui.py", line 81,
in __init__
    self.fg = flow_graph_maker (frame, self, vbox, sys.argv)
  File "./usrp_wfm_rcv.py", line 93, in __init__
    False)  # ok_to_block
  File "/usr/local/lib/python2.4/site-packages/gnuradio/audio_oss.py",
line 218, in sink
    return _audio_oss.sink(*args)
RuntimeError: std::runtime_error


Seems to be some issue with audio_oss?????

I did note that gr-audio-alsa did not configure or build, so, I when back
and:

./configure ?-disable-all-components ?-enable-gr-audio-alsa

I get the following error at the end of the configure

?checking for alsa >= 0.9 .. gr-audio-alsa requires package alsa, not found.

Configure: error: component gr-audio-alsa has errors, stopping

When I  try to install:

alsa-lib-1.0.11-3.rc2.2.i386.rpm

With rpm ?Uhv , I get the message that alsa-lib-1.0.11-4.rc2 is already
installed - infact, I've got alsa-lib-devel and alsa-util installed also

What am I missing ? what more do I need?

Doug


Matt Ettus wrote:
> 
> Carlson, Douglas wrote:
> 
>> I am relatively new to gnuradio ? I?ve been trying to get everything 
>> up an running ? after long vacation ? I?m back at it. I?m struggling 
>> with the ?sound? part of it.
>>
>> I?m running FC5 on a compact computer with an nvidia sound card. I am 
>> following the instructions given in wiki for FC5 build (did most 
>> recent last night)
>>
>> gr-audio-oss seemed to configure and build along with most everything 
>> else. When I run dial_tone.py ? I get a dial tone out of speakers ?
>>
>> When I run, usrp_wfm_rcv.py, with ?f 107.9M (Boston area FM station) ? 
>> I get indication of signal ? demodulation seems to function ? but 
>> nothing out of speakers ? not even white noise. Seems like an issue 
>> with the audio sink or something. Any idea where I should be looking 
>> for the problem?
>>
> gr-audio-alsa is the preferred sound driver.
> 
> If audio works in dial_tone.py then it should work in the other app 
> unless your soundcard doesn't support the sample rate it uses (32K). Try 
> using the following option on the command line:
> 
> -O plughw:0.0
> 
> This enables the alsa audio rate resampler.
> 
> Matt
> 
> 
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> 
> 

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