def __init__(self, options, args, queue): gr.top_block.__init__(self) self.options = options self.args = args rate = int(options.rate) if options.filename is None: self.u = uhd.single_usrp_source("", 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) 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(), ) else: self.u = gr.file_source(gr.sizeof_gr_complex, options.filename) print "Rate is %i" % (rate, ) pass_all = 0 if options.output_all: pass_all = 1 self.demod = gr.complex_to_mag() self.avg = gr.moving_average_ff(100, 1.0 / 100, 400) #the DBSRX especially tends to be spur-prone; the LPF keeps out the #spur multiple that shows up at 2MHz self.lpfiltcoeffs = gr.firdes.low_pass(1, rate, 1.8e6, 100e3) self.lpfilter = gr.fir_filter_ccf(1, self.lpfiltcoeffs) self.preamble = air.modes_preamble(rate, options.threshold) #self.framer = air.modes_framer(rate) self.slicer = air.modes_slicer(rate, queue) self.connect(self.u, self.lpfilter, self.demod) self.connect(self.demod, self.avg) self.connect(self.demod, (self.preamble, 0)) self.connect(self.avg, (self.preamble, 1)) self.connect((self.preamble, 0), (self.slicer, 0))
def __init__(self, options, args, queue): gr.top_block.__init__(self) self.options = options self.args = args rate = int(options.rate) if options.filename is None: self.u = uhd.single_usrp_source("", 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) 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(),) else: self.u = gr.file_source(gr.sizeof_gr_complex, options.filename) print "Rate is %i" % (rate,) pass_all = 0 if options.output_all : pass_all = 1 self.demod = gr.complex_to_mag() self.avg = gr.moving_average_ff(100, 1.0/100, 400) #the DBSRX especially tends to be spur-prone; the LPF keeps out the #spur multiple that shows up at 2MHz self.lpfiltcoeffs = gr.firdes.low_pass(1, rate, 1.8e6, 100e3) self.lpfilter = gr.fir_filter_ccf(1, self.lpfiltcoeffs) self.preamble = air.modes_preamble(rate, options.threshold) #self.framer = air.modes_framer(rate) self.slicer = air.modes_slicer(rate, queue) self.connect(self.u, self.lpfilter, self.demod) self.connect(self.demod, self.avg) self.connect(self.demod, (self.preamble, 0)) self.connect(self.avg, (self.preamble, 1)) self.connect((self.preamble, 0), (self.slicer, 0))
def __init__(self, options, args, queue): gr.top_block.__init__(self) self.options = options self.args = args rate = int(options.rate) if options.filename is None: self.u = rtl_source_c() #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_sample_rate(rate) 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" % (options.gain,) self.u.set_verbose(0) else: self.u = gr.file_source(gr.sizeof_gr_complex, options.filename) print "Rate is %i" % (rate,) pass_all = 0 if options.output_all : pass_all = 1 self.demod = gr.complex_to_mag() self.avg = gr.moving_average_ff(100, 1.0/100, 400) #the DBSRX especially tends to be spur-prone; the LPF keeps out the #spur multiple that shows up at 2MHz # self.lpfiltcoeffs = gr.firdes.low_pass(1, rate, 0.9*rate/2, 50e3) # self.lpfiltcoeffs = gr.firdes.low_pass(1, rate, 0.9*rate/2, 100e3) self.lpfiltcoeffs = gr.firdes.high_pass(1, rate, 1e3, 100e3) self.lpfilter = gr.fir_filter_ccf(1, self.lpfiltcoeffs) self.preamble = air.modes_preamble(rate, options.threshold) #self.framer = air.modes_framer(rate) self.slicer = air.modes_slicer(rate, queue) self.connect(self.u, self.lpfilter, self.demod) self.connect(self.demod, self.avg) self.connect(self.demod, (self.preamble, 0)) self.connect(self.avg, (self.preamble, 1)) self.connect((self.preamble, 0), (self.slicer, 0))