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("-R", "--rx-subdev-spec", type="subdev", default=None, help="select USRP Rx side A or B (default=A)") 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=65, 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="", help="pcm device name. E.g., hw:0,0 or surround51 or /dev/dsp") (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 # build graph self.u = usrp.source_c() # usrp is data source adc_rate = self.u.adc_rate() # 64 MS/s usrp_decim = 200 self.u.set_decim_rate(usrp_decim) usrp_rate = adc_rate / usrp_decim # 320 kS/s chanfilt_decim = 1 demod_rate = usrp_rate / chanfilt_decim audio_decimation = 10 audio_rate = 3*demod_rate / audio_decimation/2 # 48 kHz if options.rx_subdev_spec is None: options.rx_subdev_spec = pick_subdevice(self.u) self.u.set_mux(usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec)) self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec) chan_filt_coeffs = gr.firdes.low_pass_2 (1, # gain usrp_rate, # sampling rate 90e3, # passband cutoff 30e3, # transition bandwidth 70, # stopband attenuation gr.firdes.WIN_BLACKMAN) print len(chan_filt_coeffs) chan_filt = gr.fir_filter_ccf (chanfilt_decim, chan_filt_coeffs) self.rchan_sample = blks2.rational_resampler_fff(3,2) self.lchan_sample = blks2.rational_resampler_fff(3,2) #self.guts = blks2.wfm_rcv (demod_rate, audio_decimation) self.guts = blks2.wfm_rcv_fmdet (demod_rate, audio_decimation) # 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 audio_sink = audio.sink (int (audio_rate), options.audio_output, False) # ok_to_block # now wire it all together self.connect (self.u, chan_filt, self.guts) self.connect((self.guts, 0), self.lchan_sample,self.volume_control_l,(audio_sink,0)) self.connect((self.guts, 1), self.rchan_sample,self.volume_control_r,(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.subdev.gain_range() options.gain = float(g[0]+g[1])/2 if options.volume is None: g = self.volume_range() options.volume = float(g[0]+g[1])/2 if abs(options.freq) < 1e6: options.freq *= 1e6 # 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 __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( 10 * nfilts, # gain nfilts * usrp_rate, # sampling rate 90e3, # passband cutoff 30e3, # transition bw 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_fmdet(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 if abs(options.freq) < 1e6: options.freq *= 1e6 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 __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("-R", "--rx-subdev-spec", type="subdev", default=None, help="select USRP Rx side A or B (default=A)") 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=65, 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="", help="pcm device name. E.g., hw:0,0 or surround51 or /dev/dsp") (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 # build graph self.u = usrp.source_c() # usrp is data source adc_rate = self.u.adc_rate() # 64 MS/s usrp_decim = 200 self.u.set_decim_rate(usrp_decim) usrp_rate = adc_rate / usrp_decim # 320 kS/s chanfilt_decim = 1 demod_rate = usrp_rate / chanfilt_decim audio_decimation = 10 audio_rate = 3 * demod_rate / audio_decimation / 2 # 48 kHz if options.rx_subdev_spec is None: options.rx_subdev_spec = pick_subdevice(self.u) self.u.set_mux( usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec)) self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec) chan_filt_coeffs = gr.firdes.low_pass_2( 1, # gain usrp_rate, # sampling rate 90e3, # passband cutoff 30e3, # transition bandwidth 70, # stopband attenuation gr.firdes.WIN_BLACKMAN) print len(chan_filt_coeffs) chan_filt = gr.fir_filter_ccf(chanfilt_decim, chan_filt_coeffs) self.rchan_sample = blks2.rational_resampler_fff(3, 2) self.lchan_sample = blks2.rational_resampler_fff(3, 2) #self.guts = blks2.wfm_rcv (demod_rate, audio_decimation) self.guts = blks2.wfm_rcv_fmdet(demod_rate, audio_decimation) # 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 audio_sink = audio.sink(int(audio_rate), options.audio_output, False) # ok_to_block # now wire it all together self.connect(self.u, chan_filt, self.guts) self.connect((self.guts, 0), self.lchan_sample, self.volume_control_l, (audio_sink, 0)) self.connect((self.guts, 1), self.rchan_sample, self.volume_control_r, (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.subdev.gain_range() options.gain = float(g[0] + g[1]) / 2 if options.volume is None: g = self.volume_range() options.volume = float(g[0] + g[1]) / 2 if abs(options.freq) < 1e6: options.freq *= 1e6 # 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 __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=65, 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="", 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(10*nfilts, # gain nfilts*usrp_rate, # sampling rate 90e3, # passband cutoff 30e3, # transition bw 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_fmdet (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 if abs(options.freq) < 1e6: options.freq *= 1e6 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")