No, I didn't. And I am not sure why not, since it made it work so much better!
Seriously . . . thanks for the help. I should have known that.
Cheers,
Dan
On Dec 23, 2014, at 11:56 AM, Marcus D. Leech wrote:
> On 12/23/2014 08:47 AM, Daniel Marlow wrote:
>>
>> Dear All:
>>
>> OS: Ubuntu 14.01.1
>> gnu-radio: 3.7.6
>> Dell Optiplex 765
>>
>> I want to use the moving_average_vff block from specest, which is not
>> available in GRC. I tried installing gr-specest using pybombs (gnuradio
>> was already installed on this system using "/usr/local/build-gnuradio -m ").
>>
>>
>> The pybombs installation of gr-specest seemed to go OK, but top_block.py
>> fails at the "import specest" line nonetheless. The error trace
>> and the top_block.py that I am using appear below (the top_block.py was
>> generated from GRC and then slightly modified to included the
>> moving_average_vff block). A linux "find" command reveals that the
>> apparently missing .so is in /usr/local/lib/libgnuradio-specest.so. Should
>> it be somewhere else?
>>
>> Any help would be greatly appreciated.
>>
>> Sincerely,
>> Dan Marlow
>>
> After you installed "specest", did you do a "sudo ldconfig" ?
>
>
>>
>> marlow@phy-gr5:~/gnuradio/TVRX2$ python top_block.py
>> Traceback (most recent call last):
>> File "top_block.py", line 7, in <module>
>> import specest
>> File "/usr/local/lib/python2.7/dist-packages/specest/__init__.py", line
>> 45, in <module>
>> from specest_swig import *
>> File "/usr/local/lib/python2.7/dist-packages/specest/specest_swig.py",
>> line 28, in <module>
>> _specest_swig = swig_import_helper()
>> File "/usr/local/lib/python2.7/dist-packages/specest/specest_swig.py",
>> line 24, in swig_import_helper
>> _mod = imp.load_module('_specest_swig', fp, pathname, description)
>> ImportError: libgnuradio-specest.so: cannot open shared object file: No such
>> file or directory
>> marlow@phy-gr5:~/gnuradio/TVRX2$
>>
>> #!/usr/bin/env python
>> ##################################################
>> # Gnuradio Python Flow Graph
>> # Title: Top Block
>> # Generated: Mon Dec 22 13:34:46 2014
>> ##################################################
>> import specest
>> from gnuradio import blocks
>> from gnuradio import eng_notation
>> from gnuradio import fft
>> from gnuradio import gr
>> from gnuradio import uhd
>> from gnuradio.eng_option import eng_option
>> from gnuradio.fft import window
>> from gnuradio.filter import firdes
>> from gnuradio.wxgui import forms
>> from grc_gnuradio import wxgui as grc_wxgui
>> from optparse import OptionParser
>> import time
>> import wx
>>
>> class top_block(grc_wxgui.top_block_gui):
>>
>> def __init__(self):
>> grc_wxgui.top_block_gui.__init__(self, title="Top Block")
>> _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
>> self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
>>
>> ##################################################
>> # Variables
>> ##################################################
>> self.samp_rate = samp_rate = int(5.0e6)
>> self.gain = gain = 20
>> self.freq = freq = 400e6
>> self.N_average = N_average = 4096
>> self.FFT_size = FFT_size = 128
>> self.BW = BW = 1700000
>>
>> ##################################################
>> # Blocks
>> ##################################################
>> self._gain_text_box = forms.text_box(
>> parent=self.GetWin(),
>> value=self.gain,
>> callback=self.set_gain,
>> label="RF Gain",
>> converter=forms.float_converter(),
>> )
>> self.Add(self._gain_text_box)
>> self._freq_text_box = forms.text_box(
>> parent=self.GetWin(),
>> value=self.freq,
>> callback=self.set_freq,
>> label="Center Frequency",
>> converter=forms.float_converter(),
>> )
>> self.Add(self._freq_text_box)
>> self.uhd_usrp_source_0 = uhd.usrp_source(
>> ",".join(("addr=192.168.10.2", "")),
>> uhd.stream_args(
>> cpu_format="fc32",
>> channels=range(1),
>> ),
>> )
>> self.uhd_usrp_source_0.set_time_source("gpsdo", 0)
>> self.uhd_usrp_source_0.set_subdev_spec("A:RX1", 0)
>> self.uhd_usrp_source_0.set_time_now(uhd.time_spec(time.time()),
>> uhd.ALL_MBOARDS)
>> self.uhd_usrp_source_0.set_samp_rate(samp_rate)
>> self.uhd_usrp_source_0.set_center_freq(freq, 0)
>> self.uhd_usrp_source_0.set_gain(gain, 0)
>> self.uhd_usrp_source_0.set_bandwidth(BW, 0)
>> self.fft_vxx_0 = fft.fft_vcc(FFT_size, True,
>> (window.blackmanharris(FFT_size)), True, 1)
>> self.blocks_vector_to_stream_0 =
>> blocks.vector_to_stream(gr.sizeof_float*1, FFT_size)
>> self.blocks_stream_to_vector_0 =
>> blocks.stream_to_vector(gr.sizeof_gr_complex*1, 128)
>> self.blocks_keep_one_in_n_0 =
>> blocks.keep_one_in_n(gr.sizeof_float*128, N_average)
>> self.blocks_file_sink_0 = blocks.file_sink(gr.sizeof_float*1,
>> "./testfile.dat", False)
>> self.blocks_file_sink_0.set_unbuffered(False)
>> self.blocks_complex_to_mag_squared_0 =
>> blocks.complex_to_mag_squared(FFT_size)
>>
>>
>> self.vectorAverage=specest.moving_average_vff(N_average,FFT_size,2000)
>>
>> ##################################################
>> # Connections
>> ##################################################
>> self.connect((self.fft_vxx_0, 0),
>> (self.blocks_complex_to_mag_squared_0, 0))
>> self.connect((self.uhd_usrp_source_0, 0),
>> (self.blocks_stream_to_vector_0, 0))
>> self.connect((self.blocks_stream_to_vector_0, 0), (self.fft_vxx_0,
>> 0))
>> #self.connect((self.blocks_complex_to_mag_squared_0, 0),
>> (self.blocks_keep_one_in_n_0, 0))
>>
>> self.connect((self.blocks_complex_to_mag_squared_0, 0),
>> (self.vectorAverage, 0))
>>
>> self.connect((self.vectorAverage, 0),
>> (self.blocks_keep_one_in_n_0, 0))
>>
>> self.connect((self.blocks_keep_one_in_n_0, 0),
>> (self.blocks_vector_to_stream_0, 0))
>> self.connect((self.blocks_vector_to_stream_0, 0),
>> (self.blocks_file_sink_0, 0))
>>
>>
>>
>> def get_samp_rate(self):
>> return self.samp_rate
>>
>> def set_samp_rate(self, samp_rate):
>> self.samp_rate = samp_rate
>> self.uhd_usrp_source_0.set_samp_rate(self.samp_rate)
>>
>> def get_gain(self):
>> return self.gain
>>
>> def set_gain(self, gain):
>> self.gain = gain
>> self._gain_text_box.set_value(self.gain)
>> self.uhd_usrp_source_0.set_gain(self.gain, 0)
>> self.uhd_usrp_source_0.set_gain(self.gain, 1)
>>
>> def get_freq(self):
>> return self.freq
>>
>> def set_freq(self, freq):
>> self.freq = freq
>> self._freq_text_box.set_value(self.freq)
>> self.uhd_usrp_source_0.set_center_freq(self.freq, 0)
>>
>> def get_N_average(self):
>> return self.N_average
>>
>> def set_N_average(self, N_average):
>> self.N_average = N_average
>> self.blocks_keep_one_in_n_0.set_n(self.N_average)
>>
>> def get_FFT_size(self):
>> return self.FFT_size
>>
>> def set_FFT_size(self, FFT_size):
>> self.FFT_size = FFT_size
>>
>> def get_BW(self):
>> return self.BW
>>
>> def set_BW(self, BW):
>> self.BW = BW
>> self.uhd_usrp_source_0.set_bandwidth(self.BW, 0)
>> self.uhd_usrp_source_0.set_bandwidth(self.BW, 1)
>>
>> if __name__ == '__main__':
>> import ctypes
>> import sys
>> if sys.platform.startswith('linux'):
>> try:
>> x11 = ctypes.cdll.LoadLibrary('libX11.so')
>> x11.XInitThreads()
>> except:
>> print "Warning: failed to XInitThreads()"
>> parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
>> (options, args) = parser.parse_args()
>> tb = top_block()
>> tb.Start(True)
>> tb.Wait()
>>
>>
>> self.uhd_usrp_source_0.set_gain(self.gain, 1)
>>
>> def get_freq(self):
>> return self.freq
>>
>> def set_freq(self, freq):
>> self.freq = freq
>> self._freq_text_box.set_value(self.freq)
>> self.uhd_usrp_source_0.set_center_freq(self.freq, 0)
>>
>> def get_N_average(self):
>> return self.N_average
>>
>> def set_N_average(self, N_average):
>> self.N_average = N_average
>>
>>
>>
>>
>> _______________________________________________
>> Discuss-gnuradio mailing list
>> Discuss-gnuradio@gnu.org
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
>
> --
> Marcus Leech
> Principal Investigator
> Shirleys Bay Radio Astronomy Consortium
> http://www.sbrac.org
> _______________________________________________
> Discuss-gnuradio mailing list
> Discuss-gnuradio@gnu.org
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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