def __init__(self, options, queue): gr.top_block.__init__(self) if options.filename is not None: self.fs = gr.file_source(gr.sizeof_gr_complex, options.filename) self.rate = options.rate else: self.u = uhd.usrp_source(options.addr, io_type=uhd.io_type.COMPLEX_FLOAT32, num_channels=1) if options.subdev is not None: self.u.set_subdev_spec(options.subdev, 0) self.u.set_samp_rate(options.rate) self.rate = self.u.get_samp_rate() # Set the antenna if(options.antenna): self.u.set_antenna(options.antenna, 0) self.centerfreq = options.centerfreq print "Tuning to: %fMHz" % (self.centerfreq - options.error) if not(self.tune(options.centerfreq - options.error)): print "Failed to set initial frequency" if options.gain is None: #set to halfway g = self.u.get_gain_range() options.gain = (g.start()+g.stop()) / 2.0 print "Setting gain to %i" % options.gain self.u.set_gain(options.gain) self.u.set_bandwidth(options.bandwidth) print "Samples per second is %i" % self.rate self._syms_per_sec = 3600; options.samples_per_second = self.rate options.syms_per_sec = self._syms_per_sec options.gain_mu = 0.01 options.mu=0.5 options.omega_relative_limit = 0.3 options.syms_per_sec = self._syms_per_sec options.offset = options.centerfreq - options.freq print "Control channel offset: %f" % options.offset self.demod = fsk_demod(options) self.start_correlator = gr.correlate_access_code_tag_bb("10101100", 0, "smartnet_preamble") #should mark start of packet self.smartnet_deinterleave = smartnet.deinterleave() self.smartnet_crc = smartnet.crc(queue) if options.filename is None: self.connect(self.u, self.demod) else: self.connect(self.fs, self.demod) self.connect(self.demod, self.start_correlator, self.smartnet_deinterleave, self.smartnet_crc) #hook up the audio patch if options.audio: self.audiorate = 48000 self.audiotaps = gr.firdes.low_pass(1, self.rate, 8000, 2000, gr.firdes.WIN_HANN) self.prefilter_decim = int(self.rate / self.audiorate) #might have to use a rational resampler for audio print "Prefilter decimation: %i" % self.prefilter_decim self.audio_prefilter = gr.freq_xlating_fir_filter_ccf(self.prefilter_decim, #decimation self.audiotaps, #taps 0, #freq offset self.rate) #sampling rate #on a trunked network where you know you will have good signal, a carrier power squelch works well. real FM receviers use a noise squelch, where #the received audio is high-passed above the cutoff and then fed to a reverse squelch. If the power is then BELOW a threshold, open the squelch. self.squelch = gr.pwr_squelch_cc(options.squelch, #squelch point alpha = 0.1, #wat ramp = 10, #wat gate = False) self.audiodemod = blks2.fm_demod_cf(self.rate/self.prefilter_decim, #rate 1, #audio decimation 4000, #deviation 3000, #audio passband 4000, #audio stopband 1, #gain 75e-6) #deemphasis constant #the filtering removes FSK data woobling from the subaudible channel (might be able to combine w/lpf above) self.audiofilttaps = gr.firdes.high_pass(1, self.audiorate, 300, 50, gr.firdes.WIN_HANN) self.audiofilt = gr.fir_filter_fff(1, self.audiofilttaps) self.audiogain = gr.multiply_const_ff(options.volume) self.audiosink = audio.sink (self.audiorate, "") # self.audiosink = gr.wavfile_sink("test.wav", 1, self.audiorate, 8) self.mute() if options.filename is None: self.connect(self.u, self.audio_prefilter) else: self.connect(self.fs, self.audio_prefilter) # self.connect(self.audio_prefilter, self.squelch, self.audiodemod, self.audiofilt, self.audiogain, self.audioresamp, self.audiosink) self.connect(self.audio_prefilter, self.squelch, self.audiodemod, self.audiofilt, self.audiogain, self.audiosink)
def __init__(self, options, queue): gr.top_block.__init__(self) self.u = uhd.usrp_source(options.addr, io_type=uhd.io_type.COMPLEX_FLOAT32, num_channels=1) if options.subdev is not None: self.u.set_subdev_spec(options.subdev, 0) self.u.set_samp_rate(options.rate) self.rate = self.u.get_samp_rate() # Set the antenna if(options.antenna): self.u.set_antenna(options.antenna, 0) self.centerfreq = options.centerfreq print "Tuning to: %fMHz" % (self.centerfreq - options.error) if not(self.tune(options.centerfreq - options.error)): print "Failed to set initial frequency" if options.gain is None: #set to halfway g = self.u.get_gain_range() options.gain = (g.start()+g.stop()) / 2.0 print "Setting gain to %i" % options.gain self.u.set_gain(options.gain) self.u.set_bandwidth(options.bandwidth) print "Samples per second is %i" % self.rate self._syms_per_sec = 3600; options.audiorate = 11025 options.rate = self.rate options.samples_per_second = self.rate #yeah i know it's on the list options.syms_per_sec = self._syms_per_sec options.gain_mu = 0.01 options.mu=0.5 options.omega_relative_limit = 0.3 options.syms_per_sec = self._syms_per_sec options.offset = options.centerfreq - options.freq print "Control channel offset: %f" % options.offset self.demod = fsk_demod(options) self.start_correlator = digital.correlate_access_code_bb("10101100",0) #should mark start of packet self.smartnet_sync = smartnet.sync() self.smartnet_deinterleave = smartnet.deinterleave() self.smartnet_parity = smartnet.parity() self.smartnet_crc = smartnet.crc() self.smartnet_packetize = smartnet.packetize() self.parse = smartnet.parse(queue) #packet-based. this simply posts lightly-formatted messages to the queue. self.connect(self.u, self.demod) self.connect(self.demod, self.start_correlator, self.smartnet_sync, self.smartnet_deinterleave, self.smartnet_parity, self.smartnet_crc, self.smartnet_packetize, self.parse)
def __init__(self, options, queue): gr.top_block.__init__(self) self.u = usrp.source_c() 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) print "Using RX d'board %s" % self.subdev.side_and_name() self.u.set_decim_rate(options.decim) self.centerfreq = options.centerfreq print "Tuning to: %fMHz" % (self.centerfreq - options.error) if not(self.tune(options.centerfreq - options.error)): print "Failed to set initial frequency" if options.gain is None: #set to halfway g = self.subdev.gain_range() options.gain = (g[0]+g[1]) / 2.0 print "Setting gain to %i" % options.gain self.subdev.set_gain(options.gain) if self.subdev.name() == "DBS Rx": self.subdev.set_bw(options.bandwidth) #only for DBSRX print "Setting DBS RX bandwidth to %fMHz" % float(options.bandwidth / 1e6) self.rate = self.u.adc_rate() / options.decim print "Samples per second is %i" % self.rate self._syms_per_sec = 3600; options.audiorate = 11025 options.rate = self.rate options.samples_per_second = self.rate #yeah i know it's on the list options.syms_per_sec = self._syms_per_sec options.gain_mu = 0.01 options.mu=0.5 options.omega_relative_limit = 0.3 options.syms_per_sec = self._syms_per_sec options.offset = options.centerfreq - options.freq print "Control channel offset: %f" % options.offset self.demod = fsk_demod(options) self.start_correlator = gr.correlate_access_code_bb("10101100",0) #should mark start of packet self.smartnet_sync = smartnet.sync() self.smartnet_deinterleave = smartnet.deinterleave() self.smartnet_parity = smartnet.parity() self.smartnet_crc = smartnet.crc() self.smartnet_packetize = smartnet.packetize() self.parse = smartnet.parse(queue) #packet-based. this simply posts lightly-formatted messages to the queue. self.connect(self.u, self.demod) self.connect(self.demod, self.start_correlator, self.smartnet_sync, self.smartnet_deinterleave, self.smartnet_parity, self.smartnet_crc, self.smartnet_packetize, self.parse)
def __init__(self, options, queue): gr.top_block.__init__(self) self.u = usrp.source_c() 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) print "Using RX d'board %s" % self.subdev.side_and_name() self.u.set_decim_rate(options.decim) self.centerfreq = options.centerfreq print "Tuning to: %fMHz" % (self.centerfreq - options.error) if not (self.tune(options.centerfreq - options.error)): print "Failed to set initial frequency" if options.gain is None: #set to halfway g = self.subdev.gain_range() options.gain = (g[0] + g[1]) / 2.0 print "Setting gain to %i" % options.gain self.subdev.set_gain(options.gain) if self.subdev.name() == "DBS Rx": self.subdev.set_bw(options.bandwidth) #only for DBSRX print "Setting DBS RX bandwidth to %fMHz" % float( options.bandwidth / 1e6) self.rate = self.u.adc_rate() / options.decim print "Samples per second is %i" % self.rate self._syms_per_sec = 3600 options.audiorate = 11025 options.rate = self.rate options.samples_per_second = self.rate #yeah i know it's on the list options.syms_per_sec = self._syms_per_sec options.gain_mu = 0.01 options.mu = 0.5 options.omega_relative_limit = 0.3 options.syms_per_sec = self._syms_per_sec options.offset = options.centerfreq - options.freq print "Control channel offset: %f" % options.offset self.demod = fsk_demod(options) self.start_correlator = gr.correlate_access_code_bb( "10101100", 0) #should mark start of packet self.smartnet_sync = smartnet.sync() self.smartnet_deinterleave = smartnet.deinterleave() self.smartnet_parity = smartnet.parity() self.smartnet_crc = smartnet.crc() self.smartnet_packetize = smartnet.packetize() self.parse = smartnet.parse( queue ) #packet-based. this simply posts lightly-formatted messages to the queue. self.connect(self.u, self.demod) self.connect(self.demod, self.start_correlator, self.smartnet_sync, self.smartnet_deinterleave, self.smartnet_parity, self.smartnet_crc, self.smartnet_packetize, self.parse)
def __init__(self, options, queue): gr.top_block.__init__(self) if options.filename is not None: self.fs = gr.file_source(gr.sizeof_gr_complex, options.filename) self.rate = options.rate else: self.u = uhd.usrp_source(options.addr, io_type=uhd.io_type.COMPLEX_FLOAT32, num_channels=1) if options.subdev is not None: self.u.set_subdev_spec(options.subdev, 0) self.u.set_samp_rate(options.rate) self.rate = self.u.get_samp_rate() # Set the antenna if (options.antenna): self.u.set_antenna(options.antenna, 0) self.centerfreq = options.centerfreq print "Tuning to: %fMHz" % (self.centerfreq - options.error) if not (self.tune(options.centerfreq - options.error)): print "Failed to set initial frequency" if options.gain is None: #set to halfway g = self.u.get_gain_range() options.gain = (g.start() + g.stop()) / 2.0 print "Setting gain to %i" % options.gain self.u.set_gain(options.gain) self.u.set_bandwidth(options.bandwidth) print "Samples per second is %i" % self.rate self._syms_per_sec = 3600 options.samples_per_second = self.rate options.syms_per_sec = self._syms_per_sec options.gain_mu = 0.01 options.mu = 0.5 options.omega_relative_limit = 0.3 options.syms_per_sec = self._syms_per_sec options.offset = options.centerfreq - options.freq print "Control channel offset: %f" % options.offset self.demod = fsk_demod(options) self.start_correlator = gr.correlate_access_code_tag_bb( "10101100", 0, "smartnet_preamble") #should mark start of packet self.smartnet_deinterleave = smartnet.deinterleave() self.smartnet_crc = smartnet.crc(queue) if options.filename is None: self.connect(self.u, self.demod) else: self.connect(self.fs, self.demod) self.connect(self.demod, self.start_correlator, self.smartnet_deinterleave, self.smartnet_crc) #hook up the audio patch if options.audio: self.audiorate = 48000 self.audiotaps = gr.firdes.low_pass(1, self.rate, 8000, 2000, gr.firdes.WIN_HANN) self.prefilter_decim = int( self.rate / self.audiorate ) #might have to use a rational resampler for audio print "Prefilter decimation: %i" % self.prefilter_decim self.audio_prefilter = gr.freq_xlating_fir_filter_ccf( self.prefilter_decim, #decimation self.audiotaps, #taps 0, #freq offset self.rate) #sampling rate #on a trunked network where you know you will have good signal, a carrier power squelch works well. real FM receviers use a noise squelch, where #the received audio is high-passed above the cutoff and then fed to a reverse squelch. If the power is then BELOW a threshold, open the squelch. self.squelch = gr.pwr_squelch_cc( options.squelch, #squelch point alpha=0.1, #wat ramp=10, #wat gate=False) self.audiodemod = blks2.fm_demod_cf( self.rate / self.prefilter_decim, #rate 1, #audio decimation 4000, #deviation 3000, #audio passband 4000, #audio stopband 1, #gain 75e-6) #deemphasis constant #the filtering removes FSK data woobling from the subaudible channel (might be able to combine w/lpf above) self.audiofilttaps = gr.firdes.high_pass(1, self.audiorate, 300, 50, gr.firdes.WIN_HANN) self.audiofilt = gr.fir_filter_fff(1, self.audiofilttaps) self.audiogain = gr.multiply_const_ff(options.volume) self.audiosink = audio.sink(self.audiorate, "") # self.audiosink = gr.wavfile_sink("test.wav", 1, self.audiorate, 8) self.mute() if options.filename is None: self.connect(self.u, self.audio_prefilter) else: self.connect(self.fs, self.audio_prefilter) # self.connect(self.audio_prefilter, self.squelch, self.audiodemod, self.audiofilt, self.audiogain, self.audioresamp, self.audiosink) self.connect(self.audio_prefilter, self.squelch, self.audiodemod, self.audiofilt, self.audiogain, self.audiosink)
def __init__(self, options, queue): gr.top_block.__init__(self) if options.filename is not None: self.fs = gr.file_source(gr.sizeof_gr_complex, options.filename) self.rate = options.rate else: #self.u = uhd.usrp_source(options.addr, # io_type=uhd.io_type.COMPLEX_FLOAT32, # num_channels=1) self.rtl = osmosdr.source_c(args="nchan=" + str(1) + " " + "") self.rtl.set_sample_rate(options.rate) self.rate = options.rate #self.rtl.get_samp_rate() self.rtl.set_center_freq(options.centerfreq, 0) #self.rtl.set_freq_corr(options.ppm, 0) self.centerfreq = options.centerfreq print "Tuning to: %fMHz" % (self.centerfreq - options.error) if not (self.tune(options.centerfreq - options.error)): print "Failed to set initial frequency" if options.gain is None: options.gain = 10 if options.bbgain is None: options.bbgain = 25 if options.ifgain is None: options.ifgain = 25 print "Setting RF gain to %i" % options.gain print "Setting BB gain to %i" % options.bbgain print "Setting IF gain to %i" % options.ifgain self.rtl.set_gain(options.gain, 0) self.rtl.set_if_gain(options.ifgain, 0) self.rtl.set_bb_gain(options.bbgain, 0) #self.rtl.set_gain_mode(1,0) print "Samples per second is %i" % self.rate self._syms_per_sec = 3600 options.samples_per_second = self.rate options.syms_per_sec = self._syms_per_sec options.gain_mu = 0.01 options.mu = 0.5 options.omega_relative_limit = 0.3 options.syms_per_sec = self._syms_per_sec options.offset = options.centerfreq - options.freq print "Control channel offset: %f" % options.offset self.offset = gr.sig_source_c(self.rate, gr.GR_SIN_WAVE, options.offset, 1.0, 0.0) # for some reason using the xlating filter to do the offset makes thing barf with the HackRF, Multiply CC seems to work options.offset = 0 self.mixer = gr.multiply_cc() self.demod = fsk_demod(options) self.start_correlator = gr.correlate_access_code_tag_bb( "10101100", 0, "smartnet_preamble") #should mark start of packet self.smartnet_deinterleave = smartnet.deinterleave() self.smartnet_crc = smartnet.crc(queue) #rerate = float(self.rate / float(first_decim)) / float(7200) #print "resampling factor: %f\n" % rerate #if rerate.is_integer(): # print "using pfb decimator\n" # self.resamp = blks2.pfb_decimator_ccf(int(rerate)) #else: # print "using pfb resampler\n" # self.resamp = blks2.pfb_arb_resampler_ccf(1 / rerate) if options.filename is None: #self.connect(self.u, self.demod) self.connect(self.rtl, (self.mixer, 0)) self.connect(self.offset, (self.mixer, 1)) self.connect(self.mixer, self.demod) # self.connect(self.rtl, self.demod) else: self.connect(self.fs, self.demod) self.connect(self.demod, self.start_correlator, self.smartnet_deinterleave, self.smartnet_crc) #hook up the audio patch if options.audio: self.audiorate = 48000 self.audiotaps = gr.firdes.low_pass(1, self.rate, 8000, 2000, gr.firdes.WIN_HANN) self.prefilter_decim = int( self.rate / self.audiorate ) #might have to use a rational resampler for audio print "Prefilter decimation: %i" % self.prefilter_decim self.audio_prefilter = gr.freq_xlating_fir_filter_ccf( self.prefilter_decim, #decimation self.audiotaps, #taps 0, #freq offset self.rate) #sampling rate #on a trunked network where you know you will have good signal, a carrier power squelch works well. real FM receviers use a noise squelch, where #the received audio is high-passed above the cutoff and then fed to a reverse squelch. If the power is then BELOW a threshold, open the squelch. #self.squelch = gr.pwr_squelch_cc(options.squelch, #squelch point # alpha = 0.1, #wat # ramp = 10, #wat # gate = False) self.audiodemod = blks2.fm_demod_cf( self.rate / self.prefilter_decim, #rate 1, #audio decimation 4000, #deviation 3000, #audio passband 4000, #audio stopband 1, #gain 75e-6) #deemphasis constant #the filtering removes FSK data woobling from the subaudible channel (might be able to combine w/lpf above) self.audiofilttaps = gr.firdes.high_pass(1, self.audiorate, 300, 50, gr.firdes.WIN_HANN) self.audiofilt = gr.fir_filter_fff(1, self.audiofilttaps) self.audiogain = gr.multiply_const_ff(options.volume) self.audiosink = audio.sink(self.audiorate, "") # self.audiosink = gr.wavfile_sink("test.wav", 1, self.audiorate, 8) #self.mute() if options.filename is None: #self.connect(self.u, self.audio_prefilter) self.connect(self.rtl, self.audio_prefilter) else: self.connect(self.fs, self.audio_prefilter) # self.connect(self.audio_prefilter, self.squelch, self.audiodemod, self.audiofilt, self.audiogain, self.audioresamp, self.audiosink) # real self.connect(self.audio_prefilter, self.squelch, self.audiodemod, self.audiofilt, self.audiogain, self.audiosink) self.connect(self.audio_prefilter, self.audiodemod, self.audiofilt, self.audiogain, self.audiosink)
def __init__(self, options, queue): gr.top_block.__init__(self) if options.filename is not None: self.fs = gr.file_source(gr.sizeof_gr_complex, options.filename) self.rate = options.rate else: #self.u = uhd.usrp_source(options.addr, # io_type=uhd.io_type.COMPLEX_FLOAT32, # num_channels=1) self.rtl = osmosdr.source_c( args="nchan=" + str(1) + " " + "" ) self.rtl.set_sample_rate(options.rate) self.rate = options.rate #self.rtl.get_samp_rate() self.rtl.set_center_freq(options.centerfreq, 0) #self.rtl.set_freq_corr(options.ppm, 0) self.centerfreq = options.centerfreq print "Tuning to: %fMHz" % (self.centerfreq - options.error) if not(self.tune(options.centerfreq - options.error)): print "Failed to set initial frequency" if options.gain is None: options.gain = 10 if options.bbgain is None: options.bbgain = 25 if options.ifgain is None: options.ifgain = 25 print "Setting RF gain to %i" % options.gain print "Setting BB gain to %i" % options.bbgain print "Setting IF gain to %i" % options.ifgain self.rtl.set_gain(options.gain, 0) self.rtl.set_if_gain(options.ifgain,0) self.rtl.set_bb_gain(options.bbgain,0) #self.rtl.set_gain_mode(1,0) print "Samples per second is %i" % self.rate self._syms_per_sec = 3600; options.samples_per_second = self.rate options.syms_per_sec = self._syms_per_sec options.gain_mu = 0.01 options.mu=0.5 options.omega_relative_limit = 0.3 options.syms_per_sec = self._syms_per_sec options.offset = options.centerfreq - options.freq print "Control channel offset: %f" % options.offset self.offset = gr.sig_source_c(self.rate, gr.GR_SIN_WAVE, options.offset, 1.0, 0.0) # for some reason using the xlating filter to do the offset makes thing barf with the HackRF, Multiply CC seems to work options.offset = 0 self.mixer = gr.multiply_cc() self.demod = fsk_demod(options) self.start_correlator = gr.correlate_access_code_tag_bb("10101100", 0, "smartnet_preamble") #should mark start of packet self.smartnet_deinterleave = smartnet.deinterleave() self.smartnet_crc = smartnet.crc(queue) #rerate = float(self.rate / float(first_decim)) / float(7200) #print "resampling factor: %f\n" % rerate #if rerate.is_integer(): # print "using pfb decimator\n" # self.resamp = blks2.pfb_decimator_ccf(int(rerate)) #else: # print "using pfb resampler\n" # self.resamp = blks2.pfb_arb_resampler_ccf(1 / rerate) if options.filename is None: #self.connect(self.u, self.demod) self.connect(self.rtl, (self.mixer, 0)) self.connect(self.offset, (self.mixer, 1)) self.connect(self.mixer, self.demod) # self.connect(self.rtl, self.demod) else: self.connect(self.fs, self.demod) self.connect(self.demod, self.start_correlator, self.smartnet_deinterleave, self.smartnet_crc) #hook up the audio patch if options.audio: self.audiorate = 48000 self.audiotaps = gr.firdes.low_pass(1, self.rate, 8000, 2000, gr.firdes.WIN_HANN) self.prefilter_decim = int(self.rate / self.audiorate) #might have to use a rational resampler for audio print "Prefilter decimation: %i" % self.prefilter_decim self.audio_prefilter = gr.freq_xlating_fir_filter_ccf(self.prefilter_decim, #decimation self.audiotaps, #taps 0, #freq offset self.rate) #sampling rate #on a trunked network where you know you will have good signal, a carrier power squelch works well. real FM receviers use a noise squelch, where #the received audio is high-passed above the cutoff and then fed to a reverse squelch. If the power is then BELOW a threshold, open the squelch. #self.squelch = gr.pwr_squelch_cc(options.squelch, #squelch point # alpha = 0.1, #wat # ramp = 10, #wat # gate = False) self.audiodemod = blks2.fm_demod_cf(self.rate/self.prefilter_decim, #rate 1, #audio decimation 4000, #deviation 3000, #audio passband 4000, #audio stopband 1, #gain 75e-6) #deemphasis constant #the filtering removes FSK data woobling from the subaudible channel (might be able to combine w/lpf above) self.audiofilttaps = gr.firdes.high_pass(1, self.audiorate, 300, 50, gr.firdes.WIN_HANN) self.audiofilt = gr.fir_filter_fff(1, self.audiofilttaps) self.audiogain = gr.multiply_const_ff(options.volume) self.audiosink = audio.sink (self.audiorate, "") # self.audiosink = gr.wavfile_sink("test.wav", 1, self.audiorate, 8) #self.mute() if options.filename is None: #self.connect(self.u, self.audio_prefilter) self.connect(self.rtl, self.audio_prefilter) else: self.connect(self.fs, self.audio_prefilter) # self.connect(self.audio_prefilter, self.squelch, self.audiodemod, self.audiofilt, self.audiogain, self.audioresamp, self.audiosink) # real self.connect(self.audio_prefilter, self.squelch, self.audiodemod, self.audiofilt, self.audiogain, self.audiosink) self.connect(self.audio_prefilter, self.audiodemod, self.audiofilt, self.audiogain, self.audiosink)
def __init__(self, options, queue): gr.top_block.__init__(self) self.rtl = osmosdr.source_c( args="nchan=" + str(1) + " " + "" ) self.rtl.set_sample_rate(options.rate) self.rtl.set_center_freq(options.centerfreq, 0) self.rtl.set_freq_corr(options.ppm, 0) self.rtl.set_gain_mode(1, 0) self.centerfreq = options.centerfreq print "Tuning to: %fMHz" % (self.centerfreq - options.error) if not(self.tune(options.centerfreq - options.error)): print "Failed to set initial frequency" if options.gain is None: options.gain = 10 if options.bbgain is None: options.bbgain = 25 if options.ifgain is None: options.ifgain = 25 print "Setting RF gain to %i" % options.gain print "Setting BB gain to %i" % options.bbgain print "Setting IF gain to %i" % options.ifgain self.rtl.set_gain(options.gain, 0) self.rtl.set_if_gain(options.ifgain,0) self.rtl.set_bb_gain(options.bbgain,0) self.rate = options.rate print "Samples per second is %i" % self.rate self._syms_per_sec = 3600; options.audiorate = 11025 options.rate = self.rate options.samples_per_second = self.rate #yeah i know it's on the list options.syms_per_sec = self._syms_per_sec options.gain_mu = 0.01 options.mu=0.5 options.omega_relative_limit = 0.3 options.syms_per_sec = self._syms_per_sec options.offset = options.centerfreq - options.freq print "Control channel offset: %f" % options.offset self.offset = gr.sig_source_c(self.rate, gr.GR_SIN_WAVE, options.offset, 1.0, 0.0) # for some reason using the xlating filter to do the offset makes thing barf with the HackRF, Multiply CC seems to work options.offset = 0 self.mixer = gr.multiply_cc() self.demod = fsk_demod(options) self.start_correlator = gr.correlate_access_code_tag_bb("10101100", 0, "smartnet_preamble") #should mark start of packet self.smartnet_deinterleave = smartnet.deinterleave() self.smartnet_crc = smartnet.crc(queue) self.connect(self.rtl, (self.mixer, 0)) self.connect(self.offset, (self.mixer, 1)) self.connect(self.mixer, self.demod) self.connect(self.demod, self.start_correlator, self.smartnet_deinterleave, self.smartnet_crc)
def __init__(self, options, args, queue): gr.top_block.__init__(self) self.options = options self.args = args self.rate = int(options.rate) if options.filename is None and options.udp is None and not options.rtlsdr: #UHD source by default from gnuradio import uhd self.u = uhd.single_usrp_source(options.args, uhd.io_type_t.COMPLEX_FLOAT32, 1) time_spec = uhd.time_spec(0.0) self.u.set_time_now(time_spec) #if(options.rx_subdev_spec is None): # options.rx_subdev_spec = "" #self.u.set_subdev_spec(options.rx_subdev_spec) if not options.antenna is None: self.u.set_antenna(options.antenna) self.u.set_samp_rate(rate) self.rate = int(self.u.get_samp_rate()) #retrieve actual if options.gain is None: #set to halfway g = self.u.get_gain_range() options.gain = (g.start()+g.stop()) / 2.0 if not(self.tune(options.freq)): print "Failed to set initial frequency" print "Setting gain to %i" % options.gain self.u.set_gain(options.gain) print "Gain is %i" % self.u.get_gain() elif options.rtlsdr: #RTLSDR dongle import osmosdr self.u = osmosdr.source_c(options.args) self.u.set_sample_rate(2.4e6) #fixed for RTL dongles if not self.u.set_center_freq(options.centerfreq - options.error): print "Failed to set initial frequency" self.u.set_gain_mode(0) #manual gain mode if options.gain is None: options.gain = 25#34 self.u.set_gain(options.gain) print "Gain is %i" % self.u.get_gain() use_resampler = True self.rate=2.4e6 else: if options.filename is not None: self.u = gr.file_source(gr.sizeof_gr_complex, options.filename) elif options.udp is not None: self.u = gr.udp_source(gr.sizeof_gr_complex, "localhost", options.udp) else: raise Exception("No valid source selected") print "Samples per second is %i" % self.rate self._syms_per_sec = 3600; options.audiorate = 11025 options.rate = self.rate options.samples_per_second = self.rate #yeah i know it's on the list options.syms_per_sec = self._syms_per_sec options.gain_mu = 0.01 options.mu=0.5 options.omega_relative_limit = 0.3 options.syms_per_sec = self._syms_per_sec options.offset = options.centerfreq - options.freq print "Control channel offset: %f" % options.offset self.demod = fsk_demod(options) self.start_correlator = gr.correlate_access_code_tag_bb("10101100",0,"smartnet_preamble") #should mark start of packet #digital. #self.start_correlator = digital.correlate_access_code_bb("10101100",0) #should mark start of packet #digital. # self.smartnet_sync = smartnet.sync() self.smartnet_deinterleave = smartnet.deinterleave() # self.smartnet_parity = smartnet.parity() self.smartnet_crc = smartnet.crc(queue) # self.smartnet_packetize = smartnet.packetize() # self.parse = smartnet.parse(queue) #packet-based. this simply posts lightly-formatted messages to the queue. self.connect(self.u, self.demod) #self.smartnet_sync, self.smartnet_parity, self.connect(self.demod, self.start_correlator, self.smartnet_deinterleave, self.smartnet_crc)#, self.smartnet_packetize, self.parse)