diff options
Diffstat (limited to 'gr-uhd/examples/python/usrp_wfm_rcv_pll.py')
| -rwxr-xr-x | gr-uhd/examples/python/usrp_wfm_rcv_pll.py | 346 |
1 files changed, 0 insertions, 346 deletions
diff --git a/gr-uhd/examples/python/usrp_wfm_rcv_pll.py b/gr-uhd/examples/python/usrp_wfm_rcv_pll.py deleted file mode 100755 index 874cab4a8..000000000 --- a/gr-uhd/examples/python/usrp_wfm_rcv_pll.py +++ /dev/null @@ -1,346 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2005-2007,2011 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. -# - -from gnuradio import gr, optfir, audio, blks2, uhd -from gnuradio import eng_notation -from gnuradio.eng_option import eng_option -from gnuradio.wxgui import slider, powermate -from gnuradio.wxgui import stdgui2, fftsink2, form, scopesink2 -from optparse import OptionParser -import sys -import wx - -class wfm_rx_block (stdgui2.std_top_block): - def __init__(self,frame,panel,vbox,argv): - stdgui2.std_top_block.__init__ (self,frame,panel,vbox,argv) - - parser=OptionParser(option_class=eng_option) - parser.add_option("-a", "--args", type="string", default="", - help="UHD device address args [default=%default]") - parser.add_option("", "--spec", type="string", default=None, - help="Subdevice of UHD device where appropriate") - parser.add_option("-A", "--antenna", type="string", default=None, - help="select Rx Antenna where appropriate") - parser.add_option("-f", "--freq", type="eng_float", default=100.1e6, - help="set frequency to FREQ", metavar="FREQ") - parser.add_option("-g", "--gain", type="eng_float", default=None, - help="set gain in dB (default is midpoint)") - parser.add_option("-s", "--squelch", type="eng_float", default=0, - help="set squelch level (default is 0)") - parser.add_option("-V", "--volume", type="eng_float", default=None, - help="set volume (default is midpoint)") - parser.add_option("-O", "--audio-output", type="string", default="default", - help="pcm device name. E.g., hw:0,0 or surround51 or /dev/dsp") - parser.add_option("", "--freq-min", type="eng_float", default=87.9e6, - help="Set a minimum frequency [default=%default]") - parser.add_option("", "--freq-max", type="eng_float", default=108.1e6, - help="Set a maximum frequency [default=%default]") - - (options, args) = parser.parse_args() - if len(args) != 0: - parser.print_help() - sys.exit(1) - - self.frame = frame - self.panel = panel - - self.vol = 0 - self.state = "FREQ" - self.freq = 0 - - self.fm_freq_min = options.freq_min - self.fm_freq_max = options.freq_max - - # build graph - self.u = uhd.usrp_source(device_addr=options.args, stream_args=uhd.stream_args('fc32')) - - # Set the subdevice spec - if(options.spec): - self.u.set_subdev_spec(options.spec, 0) - - # Set the antenna - if(options.antenna): - self.u.set_antenna(options.antenna, 0) - - usrp_rate = 320e3 - demod_rate = 320e3 - audio_rate = 48e3 - audio_decim = 10 - - self.u.set_samp_rate(usrp_rate) - dev_rate = self.u.get_samp_rate() - - nfilts = 32 - chan_coeffs = gr.firdes.low_pass_2 (nfilts, # gain - nfilts*usrp_rate, # sampling rate - 90e3, # passband cutoff - 30e3, # stopband cutoff - 70) # stopband attenuation - rrate = usrp_rate / dev_rate - self.chan_filt = blks2.pfb_arb_resampler_ccf(rrate, chan_coeffs, nfilts) - - - self.guts = blks2.wfm_rcv_pll (demod_rate, audio_decim) - - chan_rate = audio_rate / (demod_rate/audio_decim) - self.rchan_filt = blks2.pfb_arb_resampler_fff(chan_rate) - self.lchan_filt = blks2.pfb_arb_resampler_fff(chan_rate) - - # FIXME rework {add,multiply}_const_* to handle multiple streams - self.volume_control_l = gr.multiply_const_ff(self.vol) - self.volume_control_r = gr.multiply_const_ff(self.vol) - - # sound card as final sink - self.audio_sink = audio.sink (int (audio_rate), - options.audio_output, - False) # ok_to_block - - # now wire it all together - self.connect (self.u, self.chan_filt, self.guts) - self.connect((self.guts, 0), self.lchan_filt, - self.volume_control_l, (self.audio_sink,0)) - self.connect((self.guts, 1), self.rchan_filt, - self.volume_control_r, (self.audio_sink,1)) - - try: - self.guts.stereo_carrier_pll_recovery.squelch_enable(True) - except: - print "FYI: This implementation of the stereo_carrier_pll_recovery has no squelch implementation yet" - - - self._build_gui(vbox, usrp_rate, demod_rate, audio_rate) - - if options.gain is None: - # if no gain was specified, use the mid-point in dB - g = self.u.get_gain_range() - options.gain = float(g.start()+g.stop())/2.0 - - if options.volume is None: - g = self.volume_range() - options.volume = float(g[0]+g[1])/2 - - frange = self.u.get_freq_range() - if(frange.start() > self.fm_freq_max or frange.stop() < self.fm_freq_min): - sys.stderr.write("Radio does not support required frequency range.\n") - sys.exit(1) - if(options.freq < self.fm_freq_min or options.freq > self.fm_freq_max): - sys.stderr.write("Requested frequency is outside of required frequency range.\n") - sys.exit(1) - - # set initial values - self.set_gain(options.gain) - self.set_vol(options.volume) - try: - self.guts.stereo_carrier_pll_recovery.set_lock_threshold(options.squelch) - except: - print "FYI: This implementation of the stereo_carrier_pll_recovery has no squelch implementation yet" - - if not(self.set_freq(options.freq)): - self._set_status_msg("Failed to set initial frequency") - - def _set_status_msg(self, msg, which=0): - self.frame.GetStatusBar().SetStatusText(msg, which) - - - def _build_gui(self, vbox, usrp_rate, demod_rate, audio_rate): - - def _form_set_freq(kv): - return self.set_freq(kv['freq']) - - - if 1: - self.src_fft = fftsink2.fft_sink_c(self.panel, title="Data from USRP", - fft_size=512, sample_rate=usrp_rate, - ref_scale=32768.0, ref_level=0, y_divs=12) - self.connect (self.u, self.src_fft) - vbox.Add (self.src_fft.win, 4, wx.EXPAND) - - if 1: - post_fm_demod_fft = fftsink2.fft_sink_f(self.panel, title="Post FM Demod", - fft_size=512, sample_rate=demod_rate, - y_per_div=10, ref_level=0) - self.connect (self.guts.fm_demod, post_fm_demod_fft) - vbox.Add (post_fm_demod_fft.win, 4, wx.EXPAND) - - if 0: - post_stereo_carrier_generator_fft = fftsink2.fft_sink_c (self.panel, title="Post Stereo_carrier_generator", - fft_size=512, sample_rate=audio_rate, - y_per_div=10, ref_level=0) - self.connect (self.guts.stereo_carrier_generator, post_stereo_carrier_generator_fft) - vbox.Add (post_stereo_carrier_generator_fft.win, 4, wx.EXPAND) - - if 0: - post_deemphasis_left = fftsink2.fft_sink_f (self.panel, title="Post_Deemphasis_Left", - fft_size=512, sample_rate=audio_rate, - y_per_div=10, ref_level=0) - self.connect (self.guts.deemph_Left, post_deemphasis_left) - vbox.Add (post_deemphasis_left.win, 4, wx.EXPAND) - - if 0: - post_deemphasis_right = fftsink2.fft_sink_f(self.panel, title="Post_Deemphasis_Right", - fft_size=512, sample_rate=audio_rate, - y_per_div=10, ref_level=-20) - self.connect (self.guts.deemph_Left, post_deemphasis_right) - vbox.Add (post_deemphasis_right.win, 4, wx.EXPAND) - - - if 0: - LmR_fft = fftsink2.fft_sink_f(self.panel, title="LmR", - fft_size=512, sample_rate=audio_rate, - y_per_div=10, ref_level=-20) - self.connect (self.guts.LmR_real,LmR_fft) - vbox.Add (LmR_fft.win, 4, wx.EXPAND) - - if 0: - self.scope = scopesink2.scope_sink_f(self.panel, sample_rate=demod_rate) - self.connect (self.guts.fm_demod,self.scope) - vbox.Add (self.scope.win,4,wx.EXPAND) - - # control area form at bottom - self.myform = myform = form.form() - - hbox = wx.BoxSizer(wx.HORIZONTAL) - hbox.Add((5,0), 0) - myform['freq'] = form.float_field( - parent=self.panel, sizer=hbox, label="Freq", weight=1, - callback=myform.check_input_and_call(_form_set_freq, self._set_status_msg)) - - hbox.Add((5,0), 0) - myform['freq_slider'] = \ - form.quantized_slider_field(parent=self.panel, sizer=hbox, weight=3, - range=(self.fm_freq_min, self.fm_freq_max, 0.1e6), - callback=self.set_freq) - hbox.Add((5,0), 0) - vbox.Add(hbox, 0, wx.EXPAND) - - hbox = wx.BoxSizer(wx.HORIZONTAL) - hbox.Add((5,0), 0) - - myform['volume'] = \ - form.quantized_slider_field(parent=self.panel, sizer=hbox, label="Volume", - weight=3, range=self.volume_range(), - callback=self.set_vol) - hbox.Add((5,0), 1) - - g = self.u.get_gain_range() - myform['gain'] = \ - form.quantized_slider_field(parent=self.panel, sizer=hbox, label="Gain", - weight=3, range=(g.start(), g.stop(), g.step()), - callback=self.set_gain) - hbox.Add((5,0), 0) - - myform['sqlch_thrsh'] = \ - form.quantized_slider_field(parent=self.panel, sizer=hbox, label="Stereo Squelch Threshold", - weight=3, range=(0.0,1.0,0.01), - callback=self.set_squelch) - hbox.Add((5,0), 0) - vbox.Add(hbox, 0, wx.EXPAND) - - try: - self.knob = powermate.powermate(self.frame) - self.rot = 0 - powermate.EVT_POWERMATE_ROTATE (self.frame, self.on_rotate) - powermate.EVT_POWERMATE_BUTTON (self.frame, self.on_button) - except: - print "FYI: No Powermate or Contour Knob found" - - - def on_rotate (self, event): - self.rot += event.delta - if (self.state == "FREQ"): - if self.rot >= 3: - self.set_freq(self.freq + .1e6) - self.rot -= 3 - elif self.rot <=-3: - self.set_freq(self.freq - .1e6) - self.rot += 3 - else: - step = self.volume_range()[2] - if self.rot >= 3: - self.set_vol(self.vol + step) - self.rot -= 3 - elif self.rot <=-3: - self.set_vol(self.vol - step) - self.rot += 3 - - def on_button (self, event): - if event.value == 0: # button up - return - self.rot = 0 - if self.state == "FREQ": - self.state = "VOL" - else: - self.state = "FREQ" - self.update_status_bar () - - - def set_vol (self, vol): - g = self.volume_range() - self.vol = max(g[0], min(g[1], vol)) - self.volume_control_l.set_k(10**(self.vol/10)) - self.volume_control_r.set_k(10**(self.vol/10)) - self.myform['volume'].set_value(self.vol) - self.update_status_bar () - - def set_squelch(self,squelch_threshold): - try: - self.guts.stereo_carrier_pll_recovery.set_lock_threshold(squelch_threshold); - except: - print "FYI: This implementation of the stereo_carrier_pll_recovery has no squelch implementation yet" - - def set_freq(self, target_freq): - """ - Set the center frequency we're interested in. - - @param target_freq: frequency in Hz - @rypte: bool - """ - - r = self.u.set_center_freq(target_freq) - - if r: - self.freq = target_freq - self.myform['freq'].set_value(target_freq) # update displayed value - self.myform['freq_slider'].set_value(target_freq) # update displayed value - self.update_status_bar() - self._set_status_msg("OK", 0) - return True - - self._set_status_msg("Failed", 0) - return False - - def set_gain(self, gain): - self.myform['gain'].set_value(gain) # update displayed value - self.u.set_gain(gain) - - def update_status_bar (self): - msg = "Volume:%r Setting:%s" % (self.vol, self.state) - self._set_status_msg(msg, 1) - self.src_fft.set_baseband_freq(self.freq) - - def volume_range(self): - return (-20.0, 0.0, 0.5) - - -if __name__ == '__main__': - app = stdgui2.stdapp (wfm_rx_block, "USRP WFM RX") - app.MainLoop () |