diff options
Diffstat (limited to 'gr-uhd/examples/python/usrp_wfm_rcv_nogui.py')
| -rwxr-xr-x | gr-uhd/examples/python/usrp_wfm_rcv_nogui.py | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/gr-uhd/examples/python/usrp_wfm_rcv_nogui.py b/gr-uhd/examples/python/usrp_wfm_rcv_nogui.py deleted file mode 100755 index 9a7558dc7..000000000 --- a/gr-uhd/examples/python/usrp_wfm_rcv_nogui.py +++ /dev/null @@ -1,175 +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 optparse import OptionParser -import sys - -class wfm_rx_block (gr.top_block): - - def __init__(self): - gr.top_block.__init__(self) - - 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("-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.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 = 32e3 - audio_decim = int(demod_rate / audio_rate) - - self.u.set_samp_rate(usrp_rate) - dev_rate = self.u.get_samp_rate() - - nfilts = 32 - chan_coeffs = optfir.low_pass (nfilts, # gain - nfilts*usrp_rate, # sampling rate - 80e3, # passband cutoff - 115e3, # stopband cutoff - 0.1, # passband ripple - 60) # stopband attenuation - rrate = usrp_rate / dev_rate - self.chan_filt = blks2.pfb_arb_resampler_ccf(rrate, chan_coeffs, nfilts) - - self.guts = blks2.wfm_rcv (demod_rate, audio_decim) - - self.volume_control = gr.multiply_const_ff(1) - - # 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.volume_control, self.audio_sink) - - 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) - if not(self.set_freq(options.freq)): - self._set_status_msg("Failed to set initial frequency") - - def set_vol (self, vol): - g = self.volume_range() - self.vol = max(g[0], min(g[1], vol)) - self.volume_control.set_k(10**(self.vol/10)) - self.update_status_bar () - - 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.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.u.set_gain(gain) - - def update_status_bar (self): - msg = "Freq: %s Volume:%f Setting:%s" % ( - eng_notation.num_to_str(self.freq), self.vol, self.state) - self._set_status_msg(msg, 1) - - def _set_status_msg(self, msg, which=0): - print msg - - def volume_range(self): - return (-20.0, 0.0, 0.5) - - -if __name__ == '__main__': - tb = wfm_rx_block() - try: - tb.run() - except KeyboardInterrupt: - pass |