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authorjcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5>2007-09-04 02:43:56 +0000
committerjcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5>2007-09-04 02:43:56 +0000
commit54d6b9281dc233e0b2acf26884073d973b7663de (patch)
tree15cd1fa40207e68c5035a50fd7d54536831c4599 /gnuradio-examples/python/usrp/tvrx_am_rcv_gui.py
parent2c37e57fe4626ac30eb8c042e4d7daf64a0d45f5 (diff)
Merged r6271:6278 from jcorgan/t182 into trunk. Implements ticket:182.
Created new top-level component, gr-utils, to hold commonly used utility scripts (originally in gnuradio-examples). These now install into the system path, allowing their use from wherever. Reorganization of gnuradio-examples component: * Commonly used utility scripts moved from python/usrp into gr-utils. * Examples now install into $(prefix)/share/gnuradio/examples/... * Channel coding examples moved into gr-trellis/src/examples, now install from there, only if gr-atsc itself is going to built and installed. * ATSC example scripts now install into example hierarchy * Cruft has been moved into 'limbo' in repository, do not get installed Trunk passes 'make distcheck'. git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@6279 221aa14e-8319-0410-a670-987f0aec2ac5
Diffstat (limited to 'gnuradio-examples/python/usrp/tvrx_am_rcv_gui.py')
-rwxr-xr-xgnuradio-examples/python/usrp/tvrx_am_rcv_gui.py154
1 files changed, 0 insertions, 154 deletions
diff --git a/gnuradio-examples/python/usrp/tvrx_am_rcv_gui.py b/gnuradio-examples/python/usrp/tvrx_am_rcv_gui.py
deleted file mode 100755
index 403cf3fa4d..0000000000
--- a/gnuradio-examples/python/usrp/tvrx_am_rcv_gui.py
+++ /dev/null
@@ -1,154 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2004 Free Software Foundation, Inc.
-#
-# This file is part of GNU Radio
-#
-# GNU Radio is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-#
-# GNU Radio is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING. If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
-#
-#
-# Demodulate an AM signal from the TVRX or a recorded file.
-# The file format must be 256 ksps, complex data.
-#
-
-from gnuradio import gr, gru, eng_notation
-from gnuradio import audio_oss as audio
-from gnuradio import usrp
-from gnuradio import tv_rx
-from gnuradio.eng_option import eng_option
-from optparse import OptionParser
-import sys
-import math
-from gnuradio.wxgui import stdgui, fftsink, scopesink
-import wx
-
-#
-# return a gr.flow_graph
-#
-class wfm_rx_graph (stdgui.gui_flow_graph):
- def __init__(self,frame,panel,vbox,argv):
- stdgui.gui_flow_graph.__init__ (self,frame,panel,vbox,argv)
-
- #set rf freq
- rf_freq = 120.e6
-
- # Decimation rate from USRP ADC to IF.
- usrp_decim = 100
-
- # Calculate the sampling rate of the USRP and capture file.
- # Decimate the IF sampling rate down by 4 to 64 ksps
- # This is a flow graph that has an input (capture file) and output (audio channel).
- #self = gr.flow_graph ()
-
- # Signal source is assumed to be 256 kspb / complex data stream.
- which_side = 0
- # usrp is data source
- if which_side == 0:
- src = usrp.source_c (0, usrp_decim, 1, gru.hexint(0xf0f0f0f0), 0)
- else:
- src = usrp.source_c (0, usrp_decim, 1, gru.hexint(0xf0f0f0f2), 0)
-
- if_rate = 640e3 # src.adc_freq() / usrp_decim
- if_decim = 5
- demod_rate = if_rate / if_decim
-
- audio_decimation = 4
- audio_rate = demod_rate / audio_decimation
-
- # set up frontend
- dboard = tv_rx.tv_rx (src, which_side)
- self.dboard = dboard
- (success, actual_freq) = dboard.set_freq(rf_freq)
- assert success
-
- if_freq = rf_freq - actual_freq
- src.set_rx_freq (0, -if_freq)
-
- print "actual freq ", actual_freq
- print "IF freq ", if_freq
-
- dboard.set_gain(50)
-
- #src = gr.file_source (gr.sizeof_gr_complex, "samples/atis_ffz_am_baseband_256k_complex.dat")
- #src = gr.file_source (gr.sizeof_gr_complex, "samples/garagedoor1.dat", True)
-
- #channel_coeffs = gr.firdes.band_pass (
- # 1.0, # gain
- # if_rate,
- # 10, # center of low transition band
- # 10000, # center of hi transition band
- # 200, # width of transition band
- # gr.firdes.WIN_HAMMING)
-
- channel_coeffs = gr.firdes.low_pass (1.0, if_rate, 10e3, 4e3, gr.firdes.WIN_HANN)
- print "len(channel_coeffs) = ", len(channel_coeffs)
-
- # Tune to the desired frequency.
- ddc = gr.freq_xlating_fir_filter_ccf (if_decim, channel_coeffs, -20e3, if_rate)
-
- # Demodule with classic sqrt (I*I + Q*Q)
- magblock = gr.complex_to_mag()
-
- # Scale the audio
- volumecontrol = gr.multiply_const_ff(.1)
-
- #band-pass
- audio_coeffs = gr.firdes.band_pass (
- 1.0, # gain
- demod_rate,
- 10, # center of low transition band
- 6000, # center of hi transition band
- 200, # width of transition band
- gr.firdes.WIN_HAMMING)
-
-
- # Low pass filter the demodulator output
- #audio_coeffs = gr.firdes.low_pass (1.0, demod_rate, 500, 200, gr.firdes.WIN_HANN)
- print "len(audio_coeffs) = ", len(audio_coeffs)
-
- # input: float; output: float
- audio_filter = gr.fir_filter_fff (audio_decimation, audio_coeffs)
-
- # sound card as final sink
- audio_sink = audio.sink (int (audio_rate))
-
- # now wire it all together
- self.connect (src, ddc)
- self.connect (ddc, magblock)
- self.connect (magblock, volumecontrol)
- self.connect (volumecontrol, audio_filter)
- self.connect (audio_filter, (audio_sink, 0))
-
- d_win = fftsink.fft_sink_c (self, panel, title="RF", fft_size=512, sample_rate=if_rate)
- self.connect (src,d_win)
- vbox.Add (d_win.win, 4, wx.EXPAND)
-
- p_win = fftsink.fft_sink_c (self, panel, title="IF", fft_size=512, sample_rate=demod_rate)
- self.connect (ddc,p_win)
- vbox.Add (p_win.win, 4, wx.EXPAND)
-
- r_win = fftsink.fft_sink_f (self, panel, title="Audio", fft_size=512, sample_rate=audio_rate)
- self.connect (audio_filter,r_win)
- vbox.Add (r_win.win, 4, wx.EXPAND)
-
- #audio_oscope = scopesink.scope_sink_f (self, panel, "Oscope Data", audio_rate)
- #self.connect (audio_filter, audio_oscope)
- #vbox.Add (audio_oscope.win, 4, wx.EXPAND)
-
-if __name__ == '__main__':
-
- app = stdgui.stdapp (wfm_rx_graph, "TVRX AM RX")
- app.MainLoop ()
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