From 54d6b9281dc233e0b2acf26884073d973b7663de Mon Sep 17 00:00:00 2001 From: jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5> Date: Tue, 4 Sep 2007 02:43:56 +0000 Subject: 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 --- gnuradio-examples/python/usrp/tvrx_am_rcv_gui.py | 154 ----------------------- 1 file changed, 154 deletions(-) delete mode 100755 gnuradio-examples/python/usrp/tvrx_am_rcv_gui.py (limited to 'gnuradio-examples/python/usrp/tvrx_am_rcv_gui.py') 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 () -- cgit v1.2.3