def __init__(self, sample_rate, symbol_rate):
gr.hier_block2.__init__(
self,
"dvb_s_demodulator_cc",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(1, 1, gr.sizeof_gr_complex)) # Output signature
omega = sample_rate / symbol_rate
gain_omega = omega * omega / 4.0
freq_beta = freq_alpha * freq_alpha / 4.0
mu = 0.0
gain_mu = 0.05
omega_relative_limit = 0.005
# Automatic gain control
self.agc = gr.agc2_cc(
0.06, # Attack rate
0.001, # Decay rate
1, # Reference
1, # Initial gain
100) # Max gain
# Frequency correction with band-edge filters FLL
freq_beta = freq_alpha * freq_alpha / 4
self.freq_recov = gr.fll_band_edge_cc(omega,
dvb_swig.RRC_ROLLOFF_FACTOR,
11 * int(omega), freq_alpha,
freq_beta)
self.receiver = gr.mpsk_receiver_cc(M, 0, freq_alpha, freq_beta, fmin,
fmax, mu, gain_mu, omega,
gain_omega, omega_relative_limit)
self.rotate = gr.multiply_const_cc(0.707 + 0.707j)
self.connect(self, self.agc, self.freq_recov, self.receiver,
self.rotate, self)
def __init__(self, sample_rate, symbol_rate): gr.hier_block2.__init__(self, "dvb_s_demodulator_cc", gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature gr.io_signature(1, 1, gr.sizeof_gr_complex)) # Output signature omega = sample_rate / symbol_rate gain_omega = omega * omega / 4.0 freq_beta = freq_alpha * freq_alpha / 4.0 mu = 0.0 gain_mu = 0.05 omega_relative_limit = 0.005 # Automatic gain control self.agc = gr.agc2_cc( 0.06, # Attack rate 0.001, # Decay rate 1, # Reference 1, # Initial gain 100) # Max gain # Frequency correction with band-edge filters FLL freq_beta = freq_alpha * freq_alpha / 4 self.freq_recov = digital.fll_band_edge_cc(omega, dvb_swig.RRC_ROLLOFF_FACTOR, 11 * int(omega), freq_bw) self.freq_recov.set_alpha(freq_alpha) self.freq_recov.set_beta(freq_beta) self.receiver = digital.mpsk_receiver_cc(M, 0, freq_bw, fmin, fmax, mu, gain_mu, omega, gain_omega, omega_relative_limit) self.receiver.set_alpha(freq_alpha) self.receiver.set_beta(freq_beta) self.rotate = gr.multiply_const_cc(0.707 + 0.707j) self.connect(self, self.agc, self.freq_recov, self.receiver, self.rotate, self)
def __init__(self):
gr.top_block.__init__(self, "CW/SSB Receiver")
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 96000
self.xlate_filter_taps = xlate_filter_taps = firdes.low_pass(1, samp_rate, 48000, 5000, firdes.WIN_HAMMING, 6.76)
self.sql_lev = sql_lev = -100
self.rf_gain = rf_gain = 20
self.pass_trans = pass_trans = 600
self.pass_low = pass_low = 300
self.pass_high = pass_high = 1200
self.freq = freq = 144800000
self.af_gain = af_gain = 5
self.sat_file_name = sat_file_name = "Undefined"
##################################################
# Blocks
##################################################
self.xlating_fir_filter = gr.freq_xlating_fir_filter_ccc(1, (xlate_filter_taps), 0, samp_rate)
self.gr_simple_squelch_cc_0 = gr.simple_squelch_cc(sql_lev, 1)
self.gr_multiply_const_vxx_0 = gr.multiply_const_vff((af_gain, ))
self.gr_complex_to_real_0 = gr.complex_to_real(1)
self.gr_agc2_xx_0 = gr.agc2_cc(1e-1, 20.8e-6, 0.3, 1.0, 0.0)
self.fcd_source_c_1 = fcd.source_c("hw:1")
self.fcd_source_c_1.set_freq(freq)
self.fcd_source_c_1.set_freq_corr(-10)
self.band_pass_filter_0 = gr.fir_filter_ccf(2, firdes.band_pass(
1, samp_rate, pass_low, pass_high, pass_trans, firdes.WIN_HAMMING, 6.76))
self.audio_sink = audio.sink(48000, "", True)
self.wavfile_sink = gr.wavfile_sink(self.sat_file_name, 1, 11025, 16)
self.blks2_rational_resampler_xxx_0 = blks2.rational_resampler_fff(
interpolation=11025,
decimation=48000,
taps=None,
fractional_bw=None,
)
##################################################
# Connections
##################################################
self.connect((self.fcd_source_c_1, 0), (self.xlating_fir_filter, 0))
self.connect((self.xlating_fir_filter, 0), (self.gr_simple_squelch_cc_0, 0))
self.connect((self.band_pass_filter_0, 0), (self.gr_agc2_xx_0, 0))
self.connect((self.gr_complex_to_real_0, 0), (self.gr_multiply_const_vxx_0, 0))
self.connect((self.gr_agc2_xx_0, 0), (self.gr_complex_to_real_0, 0))
self.connect((self.gr_simple_squelch_cc_0, 0), (self.band_pass_filter_0, 0))
self.connect((self.gr_multiply_const_vxx_0, 0), (self.audio_sink, 0))
self.connect((self.gr_multiply_const_vxx_0, 0), (self.audio_sink, 1))
self.connect((self.gr_complex_to_real_0, 0), (self.blks2_rational_resampler_xxx_0, 0))
self.connect((self.blks2_rational_resampler_xxx_0, 0), (self.wavfile_sink, 0))
def __init__(self):
gr.top_block.__init__(self, "CC1101 Burst Detector")
def rx_callback():
print "Callback Fired"
# Variables
self.samp_rate = samp_rate = 250e3
self.f_center = f_center = 510e6
self.bandwidth = bandwidth = 125e3
self.gain = gain = 15
self.sps = sps = 2
# Blocks
self.uhd_src = uhd.usrp_source(
device_addr="serial=E8R10Z2B1", #cheetara
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.uhd_src.set_samp_rate(samp_rate)
self.uhd_src.set_center_freq(f_center, 0)
self.uhd_src.set_gain(gain, 0)
self.uhd_src.set_antenna("TX/RX", 0)
self.uhd_src.set_bandwidth(bandwidth, 0)
self.uhd_src.set_samp_rate(self.samp_rate)
self.uhd_src.set_center_freq(self.f_center, 0)
self.uhd_src.set_gain(self.gain, 0)
# change magic_num until abs(ratio) as close to 0 (when sending all A's)
# as possible (.000X or closer)
# need to solve clock synchronization
self.msk_demod = level.msk_demod_cf(ti_adj=False, magic_num=.022)
self.agc = gr.agc2_cc()
#self.clock_sync = digital.pfb_clock_sync_ccf(sps=2,)
self.costas_loop = digital.costas_loop_cc(2*3.14/100.0, 4)
self.packet_receiver = level.cc1k_demod_pkts(callback=rx_callback())
self.vec_sink = gr.vector_sink_f(1)
self.slicer = digital.binary_slicer_fb()
self.bin_sink = gr.vector_sink_b(1)
# Connections
self.connect(self.uhd_src, self.agc, self.msk_demod, self.slicer, self.bin_sink)
self.connect(self.msk_demod, self.vec_sink)
self.connect(self.uhd_src, self.packet_receiver)
def __init__(self, sample_rate, symbol_rate):
gr.hier_block2.__init__(
self,
"dvb_s_demodulator2_cc",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(1, 1, gr.sizeof_gr_complex)) # Output signature
samples_per_symbol = sample_rate / symbol_rate
# Automatic gain control
self.agc = gr.agc2_cc(
0.06, # Attack rate
0.001, # Decay rate
1, # Reference
1, # Initial gain
100) # Max gain
# Frequency correction with band-edge filters FLL
freq_beta = freq_alpha * freq_alpha / 4
self.freq_recov = digital.fll_band_edge_cc(
samples_per_symbol,
dvb_swig.RRC_ROLLOFF_FACTOR,
11 * int(samples_per_symbol), # Size of the filter in taps
freq_bw)
self.freq_recov.set_alpha(freq_alpha)
self.freq_recov.set_beta(freq_beta)
# Symbol timing recovery with RRC data filter
ntaps = 11 * int(samples_per_symbol * nfilts)
rrc_taps = gr.firdes.root_raised_cosine(nfilts, nfilts,
1.0 / samples_per_symbol,
dvb_swig.RRC_ROLLOFF_FACTOR,
ntaps)
self.time_recov = gr.pfb_clock_sync_ccf(
samples_per_symbol, # Samples per second in the incoming signal
timing_alpha, # Alpha gain of control loop
rrc_taps, # The filter taps
nfilts, # Number of filters in the filter bank
nfilts /
2) # Initial phase to look at (or which filter to start with)
self.time_recov.set_beta(timing_beta)
# Perform phase / fine frequency correction using Costas PLL
phase_beta = phase_alpha * phase_alpha / 4
self.phase_recov = digital.costas_loop_cc(phase_bw, M)
self.phase_recov.set_alpha(phase_alpha)
self.phase_recov.set_beta(phase_beta)
self.connect(self, self.agc, self.freq_recov, self.time_recov,
self.phase_recov, self)
def __init__(self, sample_rate, symbol_rate): gr.hier_block2.__init__(self, "dvb_s_demodulator2_cc", gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature gr.io_signature(1, 1, gr.sizeof_gr_complex)) # Output signature samples_per_symbol = sample_rate / symbol_rate # Automatic gain control self.agc = gr.agc2_cc( 0.06, # Attack rate 0.001, # Decay rate 1, # Reference 1, # Initial gain 100) # Max gain # Frequency correction with band-edge filters FLL freq_beta = freq_alpha * freq_alpha / 4 self.freq_recov = digital.fll_band_edge_cc( samples_per_symbol, dvb_swig.RRC_ROLLOFF_FACTOR, 11 * int(samples_per_symbol), # Size of the filter in taps freq_bw) self.freq_recov.set_alpha(freq_alpha) self.freq_recov.set_beta(freq_beta) # Symbol timing recovery with RRC data filter ntaps = 11 * int(samples_per_symbol * nfilts) rrc_taps = gr.firdes.root_raised_cosine(nfilts, nfilts, 1.0 / samples_per_symbol, dvb_swig.RRC_ROLLOFF_FACTOR, ntaps) self.time_recov = gr.pfb_clock_sync_ccf( samples_per_symbol, # Samples per second in the incoming signal timing_alpha, # Alpha gain of control loop rrc_taps, # The filter taps nfilts, # Number of filters in the filter bank nfilts / 2) # Initial phase to look at (or which filter to start with) self.time_recov.set_beta(timing_beta) # Perform phase / fine frequency correction using Costas PLL phase_beta = phase_alpha * phase_alpha / 4 self.phase_recov = digital.costas_loop_cc(phase_bw, M) self.phase_recov.set_alpha(phase_alpha) self.phase_recov.set_beta(phase_beta) self.connect(self, self.agc, self.freq_recov, self.time_recov, self.phase_recov, self)
def __init__( self, parent, title='', sample_rate=1, size=(495,450), frame_rate=5, const_size=1024, mod='DBPSK'): #init gr.hier_block2.__init__( self, "const_sink", gr.io_signature(1, 1, gr.sizeof_gr_complex), gr.io_signature(0, 0, 0), ) self.sd = blks2.stream_to_vector_decimator( item_size=gr.sizeof_gr_complex, sample_rate=sample_rate, vec_rate=frame_rate, vec_len=const_size, ) self. agc = gr.agc2_cc(0.6e-1, 1e-3, 1, 1, 100) self.gain= gr.multiply_const_cc(utils.gain[mod]) msgq = gr.msg_queue(2) sink = gr.message_sink(gr.sizeof_gr_complex*const_size, msgq, True) #connect self.connect(self, self.agc, self.gain, self.sd, sink) #controller def setter(p, k, x): p[k] = x self.controller = pubsub() #initial update common.input_watcher(msgq, self.controller, MSG_KEY) #create window self.win = const_window( parent=parent, controller=self.controller, size=size, title=title, msg_key=MSG_KEY ) common.register_access_methods(self, self.win)
def __init__(self):
gr.top_block.__init__(self, "CW/SSB Receiver")
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 96000
self.xlate_filter_taps = xlate_filter_taps = firdes.low_pass(1, samp_rate, 48000, 5000, firdes.WIN_HAMMING, 6.76)
self.sql_lev = sql_lev = -100
self.rf_gain = rf_gain = 20
self.pass_trans = pass_trans = 600
self.pass_low = pass_low = 300
self.pass_high = pass_high = 1200
self.freq = freq = 144800000
self.af_gain = af_gain = 5
##################################################
# Blocks
##################################################
self.xlating_fir_filter = gr.freq_xlating_fir_filter_ccc(1, (xlate_filter_taps), 0, samp_rate)
self.gr_simple_squelch_cc_0 = gr.simple_squelch_cc(sql_lev, 1)
self.gr_multiply_const_vxx_0 = gr.multiply_const_vff((af_gain, ))
self.gr_complex_to_real_0 = gr.complex_to_real(1)
self.gr_agc2_xx_0 = gr.agc2_cc(1e-1, 20.8e-6, 0.3, 1.0, 0.0)
self.fcd_source_c_1 = fcd.source_c("hw:1")
self.fcd_source_c_1.set_freq(freq)
self.fcd_source_c_1.set_freq_corr(-10)
self.band_pass_filter_0 = gr.fir_filter_ccf(2, firdes.band_pass(
1, samp_rate, pass_low, pass_high, pass_trans, firdes.WIN_HAMMING, 6.76))
self.audio_sink = audio.sink(48000, "", True)
##################################################
# Connections
##################################################
self.connect((self.fcd_source_c_1, 0), (self.xlating_fir_filter, 0))
self.connect((self.xlating_fir_filter, 0), (self.gr_simple_squelch_cc_0, 0))
self.connect((self.band_pass_filter_0, 0), (self.gr_agc2_xx_0, 0))
self.connect((self.gr_complex_to_real_0, 0), (self.gr_multiply_const_vxx_0, 0))
self.connect((self.gr_agc2_xx_0, 0), (self.gr_complex_to_real_0, 0))
self.connect((self.gr_simple_squelch_cc_0, 0), (self.band_pass_filter_0, 0))
self.connect((self.gr_multiply_const_vxx_0, 0), (self.audio_sink, 0))
self.connect((self.gr_multiply_const_vxx_0, 0), (self.audio_sink, 1))
def __init__(self,
parent,
title='',
sample_rate=1,
size=(495, 450),
frame_rate=5,
const_size=1024,
mod='DBPSK'):
#init
gr.hier_block2.__init__(
self,
"const_sink",
gr.io_signature(1, 1, gr.sizeof_gr_complex),
gr.io_signature(0, 0, 0),
)
self.sd = blks2.stream_to_vector_decimator(
item_size=gr.sizeof_gr_complex,
sample_rate=sample_rate,
vec_rate=frame_rate,
vec_len=const_size,
)
self.agc = gr.agc2_cc(0.6e-1, 1e-3, 1, 1, 100)
self.gain = gr.multiply_const_cc(utils.gain[mod])
msgq = gr.msg_queue(2)
sink = gr.message_sink(gr.sizeof_gr_complex * const_size, msgq, True)
#connect
self.connect(self, self.agc, self.gain, self.sd, sink)
#controller
def setter(p, k, x):
p[k] = x
self.controller = pubsub()
#initial update
common.input_watcher(msgq, self.controller, MSG_KEY)
#create window
self.win = const_window(parent=parent,
controller=self.controller,
size=size,
title=title,
msg_key=MSG_KEY)
common.register_access_methods(self, self.win)
def test_005(self):
''' Test the complex AGC loop (attack and decay rate inputs) '''
tb = self.tb
expected_result = \
((100.000244140625+7.2191943445432116e-07j),
(0.80881959199905396+0.58764183521270752j),
(0.30894950032234192+0.95084899663925171j),
(-0.30895623564720154+0.95086973905563354j),
(-0.80887287855148315+0.58768033981323242j),
(-0.99984413385391235+5.850709250410091e-09j),
(-0.80889981985092163-0.58770018815994263j),
(-0.30897706747055054-0.95093393325805664j),
(0.30898112058639526-0.95094609260559082j),
(0.80893135070800781-0.58772283792495728j),
(0.99990922212600708-8.7766354184282136e-09j),
(0.80894720554351807+0.58773452043533325j),
(0.30899339914321899+0.95098406076431274j),
(-0.30899572372436523+0.95099133253097534j),
(-0.80896598100662231+0.58774799108505249j),
(-0.99994778633117676+1.4628290578855285e-08j),
(-0.80897533893585205-0.58775502443313599j),
(-0.30900305509567261-0.95101380348205566j),
(0.30900448560714722-0.95101797580718994j),
(0.80898630619049072-0.58776277303695679j),
(0.99997037649154663-1.7554345532744264e-08j),
(0.80899184942245483+0.58776694536209106j),
(0.30900871753692627+0.95103120803833008j),
(-0.30900952219963074+0.95103377103805542j),
(-0.8089984655380249+0.58777159452438354j),
(-0.99998390674591064+2.3406109050938539e-08j),
(-0.809001624584198-0.58777409791946411j),
(-0.30901208519935608-0.95104163885116577j),
(0.30901262164115906-0.95104306936264038j),
(0.80900543928146362-0.587776780128479j),
(0.99999171495437622-2.6332081404234486e-08j),
(0.80900734663009644+0.58777821063995361j),
(0.30901408195495605+0.95104765892028809j),
(-0.30901429057121277+0.95104855298995972j),
(-0.80900967121124268+0.58777981996536255j),
(-0.99999648332595825+3.2183805842578295e-08j),
(-0.80901080369949341-0.58778077363967896j),
(-0.30901527404785156-0.95105135440826416j),
(0.30901545286178589-0.95105189085006714j),
(0.80901217460632324-0.58778166770935059j),
(0.99999916553497314-3.5109700036173308e-08j),
(0.809012770652771+0.58778214454650879j),
(0.30901595950126648+0.9510534405708313j),
(-0.30901598930358887+0.95105385780334473j),
(-0.80901366472244263+0.58778274059295654j),
(-1.0000008344650269+4.0961388947380328e-08j),
(-0.8090139627456665-0.58778303861618042j),
(-0.30901634693145752-0.95105475187301636j),
(0.30901640653610229-0.95105493068695068j),
(0.80901449918746948-0.5877833366394043j))
sampling_freq = 100
src1 = gr.sig_source_c(sampling_freq, gr.GR_SIN_WAVE,
sampling_freq * 0.10, 100)
dst1 = gr.vector_sink_c()
head = gr.head(gr.sizeof_gr_complex, int(5 * sampling_freq * 0.10))
agc = gr.agc2_cc(1e-2, 1e-3, 1, 1, 1000)
tb.connect(src1, head)
tb.connect(head, agc)
tb.connect(agc, dst1)
if test_output == True:
tb.connect(agc,
gr.file_sink(gr.sizeof_gr_complex, "test_agc2_cc.dat"))
tb.run()
dst_data = dst1.data()
self.assertComplexTuplesAlmostEqual(expected_result, dst_data, 4)
def __init__(self):
gr.top_block.__init__(self, "Uhd Snr Receiver")
Qt.QWidget.__init__(self)
self.setWindowTitle("Uhd Snr Receiver")
self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
self.top_scroll_layout = Qt.QVBoxLayout()
self.setLayout(self.top_scroll_layout)
self.top_scroll = Qt.QScrollArea()
self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
self.top_scroll_layout.addWidget(self.top_scroll)
self.top_scroll.setWidgetResizable(True)
self.top_widget = Qt.QWidget()
self.top_scroll.setWidget(self.top_widget)
self.top_layout = Qt.QVBoxLayout(self.top_widget)
self.top_grid_layout = Qt.QGridLayout()
self.top_layout.addLayout(self.top_grid_layout)
self.settings = Qt.QSettings("GNU Radio", "uhd_snr_receiver")
self.restoreGeometry(self.settings.value("geometry").toByteArray())
##################################################
# Variables
##################################################
self.sps = sps = 4
self.nfilts = nfilts = 32
self.samp_rate = samp_rate = 1e6
self.rrc_taps = rrc_taps = filter.firdes.root_raised_cosine(nfilts, nfilts, 1.0/float(sps), 0.35, 11*sps*nfilts)
self.gain = gain = 15
self.freq = freq = 520e6
self.fine_freq = fine_freq = -28400
##################################################
# Blocks
##################################################
self._gain_layout = Qt.QVBoxLayout()
self._gain_tool_bar = Qt.QToolBar(self)
self._gain_layout.addWidget(self._gain_tool_bar)
self._gain_tool_bar.addWidget(Qt.QLabel("RX Gain"+": "))
self._gain_counter = Qwt.QwtCounter()
self._gain_counter.setRange(0, 31.5, 0.5)
self._gain_counter.setNumButtons(2)
self._gain_counter.setValue(self.gain)
self._gain_tool_bar.addWidget(self._gain_counter)
self._gain_counter.valueChanged.connect(self.set_gain)
self._gain_slider = Qwt.QwtSlider(None, Qt.Qt.Horizontal, Qwt.QwtSlider.BottomScale, Qwt.QwtSlider.BgSlot)
self._gain_slider.setRange(0, 31.5, 0.5)
self._gain_slider.setValue(self.gain)
self._gain_slider.setMinimumWidth(200)
self._gain_slider.valueChanged.connect(self.set_gain)
self._gain_layout.addWidget(self._gain_slider)
self.top_layout.addLayout(self._gain_layout)
self._freq_layout = Qt.QVBoxLayout()
self._freq_tool_bar = Qt.QToolBar(self)
self._freq_layout.addWidget(self._freq_tool_bar)
self._freq_tool_bar.addWidget(Qt.QLabel("Frequency"+": "))
self._freq_counter = Qwt.QwtCounter()
self._freq_counter.setRange(514e6, 526e6, 1e6)
self._freq_counter.setNumButtons(2)
self._freq_counter.setValue(self.freq)
self._freq_tool_bar.addWidget(self._freq_counter)
self._freq_counter.valueChanged.connect(self.set_freq)
self._freq_slider = Qwt.QwtSlider(None, Qt.Qt.Horizontal, Qwt.QwtSlider.BottomScale, Qwt.QwtSlider.BgSlot)
self._freq_slider.setRange(514e6, 526e6, 1e6)
self._freq_slider.setValue(self.freq)
self._freq_slider.setMinimumWidth(200)
self._freq_slider.valueChanged.connect(self.set_freq)
self._freq_layout.addWidget(self._freq_slider)
self.top_grid_layout.addLayout(self._freq_layout, 2,0,1,1)
self._fine_freq_layout = Qt.QVBoxLayout()
self._fine_freq_tool_bar = Qt.QToolBar(self)
self._fine_freq_layout.addWidget(self._fine_freq_tool_bar)
self._fine_freq_tool_bar.addWidget(Qt.QLabel("Fine Frequency"+": "))
self._fine_freq_counter = Qwt.QwtCounter()
self._fine_freq_counter.setRange(-50e3, 50e3, 100)
self._fine_freq_counter.setNumButtons(2)
self._fine_freq_counter.setValue(self.fine_freq)
self._fine_freq_tool_bar.addWidget(self._fine_freq_counter)
self._fine_freq_counter.valueChanged.connect(self.set_fine_freq)
self._fine_freq_slider = Qwt.QwtSlider(None, Qt.Qt.Horizontal, Qwt.QwtSlider.BottomScale, Qwt.QwtSlider.BgSlot)
self._fine_freq_slider.setRange(-50e3, 50e3, 100)
self._fine_freq_slider.setValue(self.fine_freq)
self._fine_freq_slider.setMinimumWidth(200)
self._fine_freq_slider.valueChanged.connect(self.set_fine_freq)
self._fine_freq_layout.addWidget(self._fine_freq_slider)
self.top_grid_layout.addLayout(self._fine_freq_layout, 2,1,1,1)
self.uhd_usrp_source_0 = uhd.usrp_source(
device_addr="",
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.uhd_usrp_source_0.set_samp_rate(samp_rate)
self.uhd_usrp_source_0.set_center_freq(freq + fine_freq, 0)
self.uhd_usrp_source_0.set_gain(gain, 0)
self.uhd_usrp_source_0.set_antenna("TX/RX", 0)
self.qtgui_time_sink_x_0_0 = qtgui.time_sink_c(
500, #size
samp_rate, #bw
"QT GUI Plot", #name
3 #number of inputs
)
self._qtgui_time_sink_x_0_0_win = sip.wrapinstance(self.qtgui_time_sink_x_0_0.pyqwidget(), Qt.QWidget)
self.top_grid_layout.addWidget(self._qtgui_time_sink_x_0_0_win, 0,0,1,1)
self.qtgui_freq_sink_x_0 = qtgui.freq_sink_c(
1024, #size
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
1 #number of inputs
)
self._qtgui_freq_sink_x_0_win = sip.wrapinstance(self.qtgui_freq_sink_x_0.pyqwidget(), Qt.QWidget)
self.top_grid_layout.addWidget(self._qtgui_freq_sink_x_0_win, 1,0,1,2)
self.qtgui_const_sink_x_0 = qtgui.const_sink_c(
1024, #size
"QT GUI Plot", #name
2 #number of inputs
)
self._qtgui_const_sink_x_0_win = sip.wrapinstance(self.qtgui_const_sink_x_0.pyqwidget(), Qt.QWidget)
self.top_grid_layout.addWidget(self._qtgui_const_sink_x_0_win, 0,1,1,1)
self.gr_multiply_xx_0 = gr.multiply_vcc(1)
self.gr_agc2_xx_0 = gr.agc2_cc(1e-1, 1e-2, 1.0, 1.0, 0.0)
self.digital_pfb_clock_sync_xxx_0 = digital.pfb_clock_sync_ccf(sps, 2*3.14/100.0, (rrc_taps), nfilts, nfilts/2, 1.5, 1)
self.digital_mpsk_snr_est_cc_0_1 = digital.mpsk_snr_est_cc(3, 10000, 0.001)
self.digital_mpsk_snr_est_cc_0_0 = digital.mpsk_snr_est_cc(2, 10000, 0.001)
self.digital_mpsk_snr_est_cc_0 = digital.mpsk_snr_est_cc(0, 10000, 0.001)
self.digital_lms_dd_equalizer_cc_0 = digital.lms_dd_equalizer_cc(15, 0.010, 1, digital.constellation_qpsk().base())
self.digital_costas_loop_cc_0 = digital.costas_loop_cc(2*3.14/100.0, 4)
##################################################
# Connections
##################################################
self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.digital_mpsk_snr_est_cc_0, 0))
self.connect((self.gr_multiply_xx_0, 0), (self.qtgui_freq_sink_x_0, 0))
self.connect((self.digital_lms_dd_equalizer_cc_0, 0), (self.qtgui_const_sink_x_0, 1))
self.connect((self.gr_agc2_xx_0, 0), (self.gr_multiply_xx_0, 3))
self.connect((self.gr_agc2_xx_0, 0), (self.gr_multiply_xx_0, 2))
self.connect((self.gr_agc2_xx_0, 0), (self.gr_multiply_xx_0, 1))
self.connect((self.gr_agc2_xx_0, 0), (self.gr_multiply_xx_0, 0))
self.connect((self.gr_agc2_xx_0, 0), (self.digital_pfb_clock_sync_xxx_0, 0))
self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.digital_costas_loop_cc_0, 0))
self.connect((self.digital_costas_loop_cc_0, 0), (self.digital_lms_dd_equalizer_cc_0, 0))
self.connect((self.digital_costas_loop_cc_0, 0), (self.qtgui_const_sink_x_0, 0))
self.connect((self.uhd_usrp_source_0, 0), (self.gr_agc2_xx_0, 0))
self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.digital_mpsk_snr_est_cc_0_0, 0))
self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.digital_mpsk_snr_est_cc_0_1, 0))
self.connect((self.digital_mpsk_snr_est_cc_0, 0), (self.qtgui_time_sink_x_0_0, 0))
self.connect((self.digital_mpsk_snr_est_cc_0_0, 0), (self.qtgui_time_sink_x_0_0, 1))
self.connect((self.digital_mpsk_snr_est_cc_0_1, 0), (self.qtgui_time_sink_x_0_0, 2))
def __init__(self):
gr.top_block.__init__(self)
parser = OptionParser(option_class=eng_option)
parser.add_option("-e", "--interface", type="string", default="eth0",
help="select Ethernet interface, default is eth0")
parser.add_option("-m", "--mac-addr", type="string", default="",
help="select USRP by MAC address, default is auto-select")
parser.add_option("-W", "--bw", type="float", default=1e6,
help="set bandwidth of receiver [default=%default]")
parser.add_option("-f", "--freq", type="eng_float", default="2.4G",
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("--fft-size", type="int", default=2048,
help="Set number of FFT bins [default=%default]")
(options, args) = parser.parse_args()
if len(args) != 0:
parser.print_help()
sys.exit(1)
self.options = options
self.show_debug_info = True
self.qapp = QtGui.QApplication(sys.argv)
# self.u = usrp2.source_32fc(options.interface, options.mac_addr)
self.u = msdd_rs.source_simple("192.168.1.20", 10000);
self.conv = gr.interleaved_short_to_complex();
self._adc_rate = self.u.pull_adc_freq()
self.set_bandwidth(options.bw)
if options.gain is None:
# if no gain was specified, use the mid-point in dB
# g = self.u.gain_range()
g = [0, 10]
#options.gain = float(g[0]+g[1])/2
options.gain = float(0)
self.set_gain(options.gain)
if options.freq is None:
options.freq = 2.4e9;
# # if no frequency was specified, use the mid-point of the subdev
# f = self.u.freq_range()
# options.freq = float(f[0]+f[1])/2
self.set_frequency(options.freq)
self._fftsize = options.fft_size
self._freq = options.freq;
self._bandwidth = 400;
self.set_bandwidth(self._bandwidth);
self.snk = qtgui.sink_c(options.fft_size, gr.firdes.WIN_BLACKMAN_hARRIS,
self._freq, self._bandwidth,
"USRP2 Display",
True, True, False, True, False)
# Set up internal amplifier
self.amp = gr.multiply_const_cc(0.0)
self.set_amplifier_gain(0.01)
# Create a single-pole IIR filter to remove DC
# but don't connect it yet
self.dc_gain = 0.001
self.dc = gr.single_pole_iir_filter_cc(self.dc_gain)
self.dc_sub = gr.sub_cc()
self.agc = gr.agc2_cc(1e-3, 1e-5, 0.01, 0.01, 10);
self.connect(self.u, self.conv, self.snk)
#self.connect(self.u, self.conv, self.amp, self.snk)
if self.show_debug_info:
print "Decimation rate: ", self._decim
print "Bandwidth: ", self._bandwidth
# print "D'board: ", self.u.daughterboard_id()
# Get the reference pointer to the SpectrumDisplayForm QWidget
# Wrap the pointer as a PyQt SIP object
# This can now be manipulated as a PyQt4.QtGui.QWidget
self.pysink = sip.wrapinstance(self.snk.pyqwidget(), QtGui.QWidget)
self.main_win = main_window(self.pysink, self)
self.main_win.set_frequency(self._freq)
self.main_win.set_gain(self._gain)
self.main_win.set_bandwidth(self._bandwidth)
self.main_win.set_amplifier(self._amp_value)
self.main_win.show()
def __init__(self):
gr.top_block.__init__(self)
amplitude = 5000
interp_rate = 256
dec_rate = 16
sw_dec = 5
num_taps = int(64000 / ( (dec_rate * 4) * 40 )) #Filter matched to 1/4 of the 40 kHz tag cycle
taps = [complex(1,1)] * num_taps
matched_filt = gr.fir_filter_ccc(sw_dec, taps);
agc = gr.agc2_cc(0.3, 1e-3, 1, 1, 100)
to_mag = gr.complex_to_mag()
center = rfid.center_ff(10)
omega = 5
mu = 0.25
gain_mu = 0.25
gain_omega = .25 * gain_mu * gain_mu
omega_relative_limit = .05
mm = gr.clock_recovery_mm_ff(omega, gain_omega, mu, gain_mu, omega_relative_limit)
self.reader = rfid.reader_f(int(128e6/interp_rate));
tag_decoder = rfid.tag_decoder_f()
command_gate = rfid.command_gate_cc(12, 250, 64000000 / dec_rate / sw_dec)
to_complex = gr.float_to_complex()
amp = gr.multiply_const_ff(amplitude)
#output the TX and RX signals only
f_txout = gr.file_sink(gr.sizeof_gr_complex, 'f_txout.out');
f_rxout = gr.file_sink(gr.sizeof_gr_complex, 'f_rxout.out');
#TX
# working frequency at 915 MHz by default and RX Gain of 20
freq = options.center_freq #915e6
rx_gain = options.rx_gain #20
tx = usrp.sink_c(fusb_block_size = 512, fusb_nblocks=4)
tx.set_interp_rate(256)
tx_subdev = (0,0)
tx.set_mux(usrp.determine_tx_mux_value(tx, tx_subdev))
subdev = usrp.selected_subdev(tx, tx_subdev)
subdev.set_enable(True)
subdev.set_gain(subdev.gain_range()[2])
t = tx.tune(subdev.which(), subdev, freq)
if not t:
print "Couldn't set tx freq"
#End TX
#RX
rx = usrp.source_c(0, dec_rate, fusb_block_size = 512, fusb_nblocks = 4)
rx_subdev_spec = (1,0)
rx.set_mux(usrp.determine_rx_mux_value(rx, rx_subdev_spec))
rx_subdev = usrp.selected_subdev(rx, rx_subdev_spec)
rx_subdev.set_gain(rx_gain)
rx_subdev.set_auto_tr(False)
rx_subdev.set_enable(True)
r = usrp.tune(rx, 0, rx_subdev, freq)
self.rx = rx
if not r:
print "Couldn't set rx freq"
#End RX
command_gate.set_ctrl_out(self.reader.ctrl_q())
tag_decoder.set_ctrl_out(self.reader.ctrl_q())
#########Build Graph
self.connect(rx, matched_filt)
self.connect(matched_filt, command_gate)
self.connect(command_gate, agc)
self.connect(agc, to_mag)
self.connect(to_mag, center, mm, tag_decoder)
self.connect(tag_decoder, self.reader, amp, to_complex, tx);
#################
#Output dumps for debug
self.connect(rx, f_rxout);
self.connect(to_complex, f_txout);
def __init__(self):
gr.top_block.__init__(self)
parser = OptionParser(option_class=eng_option)
parser.add_option("-e",
"--interface",
type="string",
default="eth0",
help="select Ethernet interface, default is eth0")
parser.add_option(
"-m",
"--mac-addr",
type="string",
default="",
help="select USRP by MAC address, default is auto-select")
parser.add_option("-W",
"--bw",
type="float",
default=1e6,
help="set bandwidth of receiver [default=%default]")
parser.add_option("-f",
"--freq",
type="eng_float",
default="2.4G",
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("--fft-size",
type="int",
default=2048,
help="Set number of FFT bins [default=%default]")
(options, args) = parser.parse_args()
if len(args) != 0:
parser.print_help()
sys.exit(1)
self.options = options
self.show_debug_info = True
self.qapp = QtGui.QApplication(sys.argv)
# self.u = usrp2.source_32fc(options.interface, options.mac_addr)
self.u = msdd_rs.source_simple("192.168.1.20", 10000)
self.conv = gr.interleaved_short_to_complex()
self._adc_rate = self.u.pull_adc_freq()
self.set_bandwidth(options.bw)
if options.gain is None:
# if no gain was specified, use the mid-point in dB
# g = self.u.gain_range()
g = [0, 10]
#options.gain = float(g[0]+g[1])/2
options.gain = float(0)
self.set_gain(options.gain)
if options.freq is None:
options.freq = 2.4e9
# # if no frequency was specified, use the mid-point of the subdev
# f = self.u.freq_range()
# options.freq = float(f[0]+f[1])/2
self.set_frequency(options.freq)
self._fftsize = options.fft_size
self._freq = options.freq
self._bandwidth = 400
self.set_bandwidth(self._bandwidth)
self.snk = qtgui.sink_c(options.fft_size,
gr.firdes.WIN_BLACKMAN_hARRIS, self._freq,
self._bandwidth, "USRP2 Display", True, True,
False, True, False)
# Set up internal amplifier
self.amp = gr.multiply_const_cc(0.0)
self.set_amplifier_gain(0.01)
# Create a single-pole IIR filter to remove DC
# but don't connect it yet
self.dc_gain = 0.001
self.dc = gr.single_pole_iir_filter_cc(self.dc_gain)
self.dc_sub = gr.sub_cc()
self.agc = gr.agc2_cc(1e-3, 1e-5, 0.01, 0.01, 10)
self.connect(self.u, self.conv, self.snk)
#self.connect(self.u, self.conv, self.amp, self.snk)
if self.show_debug_info:
print "Decimation rate: ", self._decim
print "Bandwidth: ", self._bandwidth
# print "D'board: ", self.u.daughterboard_id()
# Get the reference pointer to the SpectrumDisplayForm QWidget
# Wrap the pointer as a PyQt SIP object
# This can now be manipulated as a PyQt4.QtGui.QWidget
self.pysink = sip.wrapinstance(self.snk.pyqwidget(), QtGui.QWidget)
self.main_win = main_window(self.pysink, self)
self.main_win.set_frequency(self._freq)
self.main_win.set_gain(self._gain)
self.main_win.set_bandwidth(self._bandwidth)
self.main_win.set_amplifier(self._amp_value)
self.main_win.show()
def __init__(self,
samples_per_symbol=_def_samples_per_symbol,
excess_bw=_def_excess_bw,
costas_alpha=_def_costas_alpha,
timing_alpha=_def_timing_alpha,
timing_max_dev=_def_timing_max_dev,
gray_code=_def_gray_code,
verbose=_def_verbose,
log=_def_log):
"""
Hierarchical block for RRC-filtered DQPSK demodulation
The input is the complex modulated signal at baseband.
The output is a stream of bits packed 1 bit per byte (LSB)
@param samples_per_symbol: samples per symbol >= 2
@type samples_per_symbol: float
@param excess_bw: Root-raised cosine filter excess bandwidth
@type excess_bw: float
@param costas_alpha: loop filter gain
@type costas_alphas: float
@param timing_alpha: timing loop alpha gain
@type timing_alpha: float
@param timing_max: timing loop maximum rate deviations
@type timing_max: float
@param gray_code: Tell modulator to Gray code the bits
@type gray_code: bool
@param verbose: Print information about modulator?
@type verbose: bool
@param debug: Print modualtion data to files?
@type debug: bool
"""
gr.hier_block2.__init__(self, "dqpsk2_demod",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(1, 1, gr.sizeof_char)) # Output signature
self._samples_per_symbol = samples_per_symbol
self._excess_bw = excess_bw
self._costas_alpha = costas_alpha
self._timing_alpha = timing_alpha
self._timing_beta = _def_timing_beta
self._timing_max_dev=timing_max_dev
self._gray_code = gray_code
if samples_per_symbol < 2:
raise TypeError, "sbp must be >= 2, is %d" % samples_per_symbol
arity = pow(2,self.bits_per_symbol())
# Automatic gain control
self.agc = gr.agc2_cc(0.6e-1, 1e-3, 1, 1, 100)
#self.agc = gr.feedforward_agc_cc(16, 2.0)
self._costas_beta = 0.25 * self._costas_alpha * self._costas_alpha
# Allow a frequency swing of +/- half of the sample rate
fmin = -0.5
fmax = 0.5
self.clock_recov = gr.costas_loop_cc(self._costas_alpha,
self._costas_beta,
fmax, fmin, arity)
# symbol timing recovery with RRC data filter
nfilts = 32
ntaps = 11 * samples_per_symbol*nfilts
taps = gr.firdes.root_raised_cosine(nfilts, nfilts, 1.0/float(self._samples_per_symbol), self._excess_bw, ntaps)
self.time_recov = gr.pfb_clock_sync_ccf(self._samples_per_symbol,
self._timing_alpha,
taps, nfilts, nfilts/2, self._timing_max_dev)
self.time_recov.set_beta(self._timing_beta)
# Perform Differential decoding on the constellation
self.diffdec = gr.diff_phasor_cc()
# find closest constellation point
rot = 1
rotated_const = map(lambda pt: pt * rot, psk.constellation[arity])
self.slicer = gr.constellation_decoder_cb(rotated_const, range(arity))
if self._gray_code:
self.symbol_mapper = gr.map_bb(psk.gray_to_binary[arity])
else:
self.symbol_mapper = gr.map_bb(psk.ungray_to_binary[arity])
# unpack the k bit vector into a stream of bits
self.unpack = gr.unpack_k_bits_bb(self.bits_per_symbol())
if verbose:
self._print_verbage()
if log:
self._setup_logging()
# Connect
self.connect(self, self.agc,
self.clock_recov,
self.time_recov,
self.diffdec, self.slicer, self.symbol_mapper, self.unpack, self)
def __init__(self): grc_wxgui.top_block_gui.__init__(self, title="AM Receiver") _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png" self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY)) ################################################## # Variables ################################################## self.samp_rate = samp_rate = 1e6 self.offset_fine = offset_fine = 0 self.offset_coarse = offset_coarse = 0 self.freq = freq = 7200000 self.LO = LO = 0 self.xlate_filter_taps = xlate_filter_taps = firdes.low_pass(1, samp_rate, 125000, 25000, firdes.WIN_HAMMING, 6.76) self.width = width = 10000 self.trans = trans = 1500 self.rx_freq = rx_freq = LO+freq+(offset_coarse+offset_fine) self.rf_gain = rf_gain = 20 self.lo_freq = lo_freq = LO self.display_selector = display_selector = 0 self.af_gain = af_gain = 1 ################################################## # Blocks ################################################## _width_sizer = wx.BoxSizer(wx.VERTICAL) self._width_text_box = forms.text_box( parent=self.GetWin(), sizer=_width_sizer, value=self.width, callback=self.set_width, label="Filter", converter=forms.float_converter(), proportion=0, ) self._width_slider = forms.slider( parent=self.GetWin(), sizer=_width_sizer, value=self.width, callback=self.set_width, minimum=2000, maximum=40000, num_steps=760, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_width_sizer, 7, 0, 1, 1) _trans_sizer = wx.BoxSizer(wx.VERTICAL) self._trans_text_box = forms.text_box( parent=self.GetWin(), sizer=_trans_sizer, value=self.trans, callback=self.set_trans, label="Trans", converter=forms.float_converter(), proportion=0, ) self._trans_slider = forms.slider( parent=self.GetWin(), sizer=_trans_sizer, value=self.trans, callback=self.set_trans, minimum=500, maximum=5000, num_steps=900, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_trans_sizer, 8, 0, 1, 1) self._rx_freq_static_text = forms.static_text( parent=self.GetWin(), value=self.rx_freq, callback=self.set_rx_freq, label="Receive", converter=forms.float_converter(), ) self.GridAdd(self._rx_freq_static_text, 5, 3, 1, 1) _offset_fine_sizer = wx.BoxSizer(wx.VERTICAL) self._offset_fine_text_box = forms.text_box( parent=self.GetWin(), sizer=_offset_fine_sizer, value=self.offset_fine, callback=self.set_offset_fine, label="Fine tune", converter=forms.float_converter(), proportion=0, ) self._offset_fine_slider = forms.slider( parent=self.GetWin(), sizer=_offset_fine_sizer, value=self.offset_fine, callback=self.set_offset_fine, minimum=-1000, maximum=1000, num_steps=400, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_offset_fine_sizer, 6, 0, 1, 2) _offset_coarse_sizer = wx.BoxSizer(wx.VERTICAL) self._offset_coarse_text_box = forms.text_box( parent=self.GetWin(), sizer=_offset_coarse_sizer, value=self.offset_coarse, callback=self.set_offset_coarse, label="Coarse tune", converter=forms.float_converter(), proportion=0, ) self._offset_coarse_slider = forms.slider( parent=self.GetWin(), sizer=_offset_coarse_sizer, value=self.offset_coarse, callback=self.set_offset_coarse, minimum=-120000, maximum=120000, num_steps=960, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_offset_coarse_sizer, 6, 2, 1, 2) self._display_selector_chooser = forms.drop_down( parent=self.GetWin(), value=self.display_selector, callback=self.set_display_selector, label="Spectrum", choices=[0, 1], labels=['Baseband','USRP'], ) self.GridAdd(self._display_selector_chooser, 5, 0, 1, 1) _af_gain_sizer = wx.BoxSizer(wx.VERTICAL) self._af_gain_text_box = forms.text_box( parent=self.GetWin(), sizer=_af_gain_sizer, value=self.af_gain, callback=self.set_af_gain, label="VOL", converter=forms.float_converter(), proportion=0, ) self._af_gain_slider = forms.slider( parent=self.GetWin(), sizer=_af_gain_sizer, value=self.af_gain, callback=self.set_af_gain, minimum=0, maximum=5, num_steps=50, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_af_gain_sizer, 8, 1, 1, 1) self.xlating_fir_filter = gr.freq_xlating_fir_filter_ccc(1, (xlate_filter_taps), -(offset_coarse+offset_fine), samp_rate) self.rtlsdr_source_c_0 = osmosdr.source_c( args="nchan=" + str(1) + " " + "" ) self.rtlsdr_source_c_0.set_sample_rate(samp_rate) self.rtlsdr_source_c_0.set_center_freq(31e6, 0) self.rtlsdr_source_c_0.set_freq_corr(0, 0) self.rtlsdr_source_c_0.set_gain_mode(0, 0) self.rtlsdr_source_c_0.set_gain(10, 0) self.rtlsdr_source_c_0.set_if_gain(24, 0) _rf_gain_sizer = wx.BoxSizer(wx.VERTICAL) self._rf_gain_text_box = forms.text_box( parent=self.GetWin(), sizer=_rf_gain_sizer, value=self.rf_gain, callback=self.set_rf_gain, label="RF", converter=forms.float_converter(), proportion=0, ) self._rf_gain_slider = forms.slider( parent=self.GetWin(), sizer=_rf_gain_sizer, value=self.rf_gain, callback=self.set_rf_gain, minimum=0, maximum=50, num_steps=50, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_rf_gain_sizer, 7, 1, 1, 1) self.low_pass_filter = gr.fir_filter_ccf(5, firdes.low_pass( 1, samp_rate, width/2, trans, firdes.WIN_HAMMING, 6.76)) self._lo_freq_static_text = forms.static_text( parent=self.GetWin(), value=self.lo_freq, callback=self.set_lo_freq, label="LO", converter=forms.float_converter(), ) self.GridAdd(self._lo_freq_static_text, 5, 2, 1, 1) self.gr_multiply_const_vxx_1 = gr.multiply_const_vff((af_gain, )) self.gr_agc2_xx_0 = gr.agc2_cc(0.1, 10e-6, 0.9, 1.0, 1.0) self._freq_text_box = forms.text_box( parent=self.GetWin(), value=self.freq, callback=self.set_freq, label="USRP", converter=forms.float_converter(), ) self.GridAdd(self._freq_text_box, 5, 1, 1, 1) self.fftsink = fftsink2.fft_sink_c( self.GetWin(), baseband_freq=rx_freq*display_selector, y_per_div=10, y_divs=10, ref_level=0, ref_scale=13490.0, sample_rate=samp_rate, fft_size=512, fft_rate=15, average=True, avg_alpha=0.5, title="", peak_hold=False, size=(800,300), ) self.GridAdd(self.fftsink.win, 0, 0, 5, 4) self.blks2_rational_resampler_xxx_1 = blks2.rational_resampler_ccc( interpolation=441, decimation=500, taps=None, fractional_bw=None, ) self.blks2_am_demod_cf_0 = blks2.am_demod_cf( channel_rate=44100, audio_decim=1, audio_pass=5000, audio_stop=5500, ) self.audio_sink_0 = audio.sink(44100, "", True) ################################################## # Connections ################################################## self.connect((self.xlating_fir_filter, 0), (self.fftsink, 0)) self.connect((self.xlating_fir_filter, 0), (self.low_pass_filter, 0)) self.connect((self.gr_multiply_const_vxx_1, 0), (self.audio_sink_0, 0)) self.connect((self.gr_multiply_const_vxx_1, 0), (self.audio_sink_0, 1)) self.connect((self.blks2_rational_resampler_xxx_1, 0), (self.blks2_am_demod_cf_0, 0)) self.connect((self.blks2_am_demod_cf_0, 0), (self.gr_multiply_const_vxx_1, 0)) self.connect((self.low_pass_filter, 0), (self.gr_agc2_xx_0, 0)) self.connect((self.gr_agc2_xx_0, 0), (self.blks2_rational_resampler_xxx_1, 0)) self.connect((self.rtlsdr_source_c_0, 0), (self.xlating_fir_filter, 0))
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="Amaviation Agc")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Variables
##################################################
self.sql_threshold = sql_threshold = -30
self.samp_rate = samp_rate = 1000000
self.frq_offset = frq_offset = 0
self.base_frq = base_frq = 131725000
##################################################
# Blocks
##################################################
_sql_threshold_sizer = wx.BoxSizer(wx.VERTICAL)
self._sql_threshold_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_sql_threshold_sizer,
value=self.sql_threshold,
callback=self.set_sql_threshold,
label="Squelch Threshold",
converter=forms.float_converter(),
proportion=0,
)
self._sql_threshold_slider = forms.slider(
parent=self.GetWin(),
sizer=_sql_threshold_sizer,
value=self.sql_threshold,
callback=self.set_sql_threshold,
minimum=-100,
maximum=0,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.Add(_sql_threshold_sizer)
_frq_offset_sizer = wx.BoxSizer(wx.VERTICAL)
self._frq_offset_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_frq_offset_sizer,
value=self.frq_offset,
callback=self.set_frq_offset,
label="Frequency Offset",
converter=forms.float_converter(),
proportion=0,
)
self._frq_offset_slider = forms.slider(
parent=self.GetWin(),
sizer=_frq_offset_sizer,
value=self.frq_offset,
callback=self.set_frq_offset,
minimum=-100000,
maximum=100000,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.Add(_frq_offset_sizer)
self._base_frq_text_box = forms.text_box(
parent=self.GetWin(),
value=self.base_frq,
callback=self.set_base_frq,
label="Base frequency",
converter=forms.float_converter(),
)
self.Add(self._base_frq_text_box)
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT Plot",
peak_hold=False,
)
self.Add(self.wxgui_fftsink2_0.win)
self.rtl2832_source_0 = baz.rtl_source_c(defer_creation=True)
self.rtl2832_source_0.set_verbose(True)
self.rtl2832_source_0.set_vid(0x0)
self.rtl2832_source_0.set_pid(0x0)
self.rtl2832_source_0.set_tuner_name("")
self.rtl2832_source_0.set_default_timeout(0)
self.rtl2832_source_0.set_use_buffer(True)
self.rtl2832_source_0.set_fir_coefficients(([]))
if self.rtl2832_source_0.create() == False: raise Exception("Failed to create RTL2832 Source: rtl2832_source_0")
self.rtl2832_source_0.set_bandwidth(300000)
self.rtl2832_source_0.set_sample_rate(samp_rate)
self.rtl2832_source_0.set_frequency(base_frq+frq_offset)
self.rtl2832_source_0.set_gain_mode("sensitive")
self.rtl2832_source_0.set_auto_gain_mode(False)
self.rtl2832_source_0.set_relative_gain(True)
self.rtl2832_source_0.set_gain(30)
self.gr_simple_squelch_cc_0 = gr.simple_squelch_cc(sql_threshold, 0.0001)
self.gr_agc2_xx_0 = gr.agc2_cc(100e-3, 200e-3, 1.0, 1.0, 2.0)
self.blks2_rational_resampler_xxx_0 = blks2.rational_resampler_ccc(
interpolation=48,
decimation=1000,
taps=None,
fractional_bw=None,
)
self.blks2_am_demod_cf_0 = blks2.am_demod_cf(
channel_rate=48000,
audio_decim=1,
audio_pass=5000,
audio_stop=5500,
)
self.audio_sink_0 = audio.sink(48000, "pulse", True)
##################################################
# Connections
##################################################
self.connect((self.rtl2832_source_0, 0), (self.wxgui_fftsink2_0, 0))
self.connect((self.blks2_am_demod_cf_0, 0), (self.audio_sink_0, 0))
self.connect((self.blks2_rational_resampler_xxx_0, 0), (self.gr_simple_squelch_cc_0, 0))
self.connect((self.gr_simple_squelch_cc_0, 0), (self.gr_agc2_xx_0, 0))
self.connect((self.gr_agc2_xx_0, 0), (self.blks2_am_demod_cf_0, 0))
self.connect((self.rtl2832_source_0, 0), (self.blks2_rational_resampler_xxx_0, 0))
def __init__(self, constellation,
samples_per_symbol=_def_samples_per_symbol,
differential=_def_differential,
excess_bw=_def_excess_bw,
gray_coded=True,
freq_bw=_def_freq_bw,
timing_bw=_def_timing_bw,
phase_bw=_def_phase_bw,
verbose=_def_verbose,
log=_def_log):
"""
Hierarchical block for RRC-filtered differential generic demodulation.
The input is the complex modulated signal at baseband.
The output is a stream of bits packed 1 bit per byte (LSB)
@param constellation: determines the modulation type
@type constellation: gnuradio.digital.gr_constellation
@param samples_per_symbol: samples per symbol >= 2
@type samples_per_symbol: float
@param excess_bw: Root-raised cosine filter excess bandwidth
@type excess_bw: float
@param gray_coded: turn gray coding on/off
@type gray_coded: bool
@param freq_bw: loop filter lock-in bandwidth
@type freq_bw: float
@param timing_bw: timing recovery loop lock-in bandwidth
@type timing_bw: float
@param phase_bw: phase recovery loop bandwidth
@type phase_bw: float
@param verbose: Print information about modulator?
@type verbose: bool
@param debug: Print modualtion data to files?
@type debug: bool
"""
gr.hier_block2.__init__(self, "generic_demod",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(1, 1, gr.sizeof_char)) # Output signature
self._constellation = constellation.base()
self._samples_per_symbol = samples_per_symbol
self._excess_bw = excess_bw
self._phase_bw = phase_bw
self._freq_bw = freq_bw
self._timing_bw = timing_bw
self._timing_max_dev= _def_timing_max_dev
self._differential = differential
if self._samples_per_symbol < 2:
raise TypeError, ("sbp must be >= 2, is %d" % self._samples_per_symbol)
arity = pow(2,self.bits_per_symbol())
nfilts = 32
ntaps = 11 * int(self._samples_per_symbol*nfilts)
# Automatic gain control
self.agc = gr.agc2_cc(0.6e-1, 1e-3, 1, 1, 100)
# Frequency correction
fll_ntaps = 55
self.freq_recov = digital_swig.fll_band_edge_cc(self._samples_per_symbol, self._excess_bw,
fll_ntaps, self._freq_bw)
# symbol timing recovery with RRC data filter
taps = gr.firdes.root_raised_cosine(nfilts, nfilts*self._samples_per_symbol,
1.0, self._excess_bw, ntaps)
self.time_recov = gr.pfb_clock_sync_ccf(self._samples_per_symbol,
self._timing_bw, taps,
nfilts, nfilts//2, self._timing_max_dev)
fmin = -0.25
fmax = 0.25
self.receiver = digital_swig.constellation_receiver_cb(
self._constellation, self._phase_bw,
fmin, fmax)
# Do differential decoding based on phase change of symbols
if differential:
self.diffdec = gr.diff_decoder_bb(arity)
if gray_coded:
self.symbol_mapper = gr.map_bb(
mod_codes.invert_code(self._constellation.pre_diff_code()))
# unpack the k bit vector into a stream of bits
self.unpack = gr.unpack_k_bits_bb(self.bits_per_symbol())
if verbose:
self._print_verbage()
if log:
self._setup_logging()
# Connect and Initialize base class
blocks = [self, self.agc, self.freq_recov,
self.time_recov, self.receiver]
if differential:
blocks.append(self.diffdec)
if self._constellation.apply_pre_diff_code():
blocks.append(self.symbol_mapper)
blocks += [self.unpack, self]
self.connect(*blocks)
def __init__(self,
constellation,
samples_per_symbol=_def_samples_per_symbol,
differential=_def_differential,
excess_bw=_def_excess_bw,
gray_coded=True,
freq_bw=_def_freq_bw,
timing_bw=_def_timing_bw,
phase_bw=_def_phase_bw,
verbose=_def_verbose,
log=_def_log):
"""
Hierarchical block for RRC-filtered differential generic demodulation.
The input is the complex modulated signal at baseband.
The output is a stream of bits packed 1 bit per byte (LSB)
@param constellation: determines the modulation type
@type constellation: gnuradio.digital.gr_constellation
@param samples_per_symbol: samples per symbol >= 2
@type samples_per_symbol: float
@param excess_bw: Root-raised cosine filter excess bandwidth
@type excess_bw: float
@param gray_coded: turn gray coding on/off
@type gray_coded: bool
@param freq_bw: loop filter lock-in bandwidth
@type freq_bw: float
@param timing_bw: timing recovery loop lock-in bandwidth
@type timing_bw: float
@param phase_bw: phase recovery loop bandwidth
@type phase_bw: float
@param verbose: Print information about modulator?
@type verbose: bool
@param debug: Print modualtion data to files?
@type debug: bool
"""
gr.hier_block2.__init__(
self,
"generic_demod",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(1, 1, gr.sizeof_char)) # Output signature
self._constellation = constellation.base()
self._samples_per_symbol = samples_per_symbol
self._excess_bw = excess_bw
self._phase_bw = phase_bw
self._freq_bw = freq_bw
self._timing_bw = timing_bw
self._timing_max_dev = _def_timing_max_dev
self._differential = differential
if self._samples_per_symbol < 2:
raise TypeError, ("sbp must be >= 2, is %d" %
self._samples_per_symbol)
arity = pow(2, self.bits_per_symbol())
nfilts = 32
ntaps = 11 * int(self._samples_per_symbol * nfilts)
# Automatic gain control
self.agc = gr.agc2_cc(0.6e-1, 1e-3, 1, 1, 100)
# Frequency correction
fll_ntaps = 55
self.freq_recov = digital.fll_band_edge_cc(self._samples_per_symbol,
self._excess_bw, fll_ntaps,
self._freq_bw)
# symbol timing recovery with RRC data filter
taps = gr.firdes.root_raised_cosine(nfilts,
nfilts * self._samples_per_symbol,
1.0, self._excess_bw, ntaps)
self.time_recov = digital.pfb_clock_sync_ccf(self._samples_per_symbol,
self._timing_bw, taps,
nfilts, nfilts // 2,
self._timing_max_dev)
fmin = -0.25
fmax = 0.25
self.receiver = digital.constellation_receiver_cb(
self._constellation, self._phase_bw, fmin, fmax)
# Do differential decoding based on phase change of symbols
if differential:
self.diffdec = digital.diff_decoder_bb(arity)
if gray_coded:
self.symbol_mapper = digital.map_bb(
mod_codes.invert_code(self._constellation.pre_diff_code()))
# unpack the k bit vector into a stream of bits
self.unpack = gr.unpack_k_bits_bb(self.bits_per_symbol())
if verbose:
self._print_verbage()
if log:
self._setup_logging()
# Connect and Initialize base class
blocks = [
self, self.agc, self.freq_recov, self.time_recov, self.receiver
]
if differential:
blocks.append(self.diffdec)
if self._constellation.apply_pre_diff_code():
blocks.append(self.symbol_mapper)
blocks += [self.unpack, self]
self.connect(*blocks)
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="Grc Wisp Reader")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
self.wxgui_scopesink2_0 = scopesink2.scope_sink_f(
self.GetWin(),
title="Scope Plot",
sample_rate=1e6,
v_scale=0,
v_offset=0,
t_scale=0,
ac_couple=False,
xy_mode=False,
num_inputs=1,
trig_mode=gr.gr_TRIG_MODE_AUTO,
y_axis_label="Counts",
)
self.Add(self.wxgui_scopesink2_0.win)
amplitude = 1
interp_rate = 128
# dec_rate = 8
# sw_dec = 4
dec_rate = 16
sw_dec = 2
# num_taps = int(64000 / ( (dec_rate * 4) * 40 )) #Filter matched to 1/4 of the 40 kHz tag cycle
num_taps = int(64000 / ( (dec_rate * 4) * 256 )) #Filter matched to 1/4 of the 256 kHz tag cycle
taps = [complex(1,1)] * num_taps
matched_filt = gr.fir_filter_ccc(sw_dec, taps);
agc = gr.agc2_cc(0.3, 1e-3, 1, 1, 100)
to_mag = gr.complex_to_mag()
# center = rfid.center_ff(10)
center = rfid.center_ff(4)
omega = 5
mu = 0.25
gain_mu = 0.25
gain_omega = .25 * gain_mu * gain_mu
omega_relative_limit = .05
# mm = digital.clock_recovery_mm_ff(omega, gain_omega, mu, gain_mu, omega_relative_limit)
mm = rfid.clock_recovery_zc_ff(4,1);
self.reader = rfid.reader_f(int(128e6/interp_rate));
tag_decoder = rfid.tag_decoder_f()
# command_gate = rfid.command_gate_cc(12, 250, 64000000 / dec_rate / sw_dec)
command_gate = rfid.command_gate_cc(12, 60, 64000000 / dec_rate / sw_dec)
to_complex = gr.float_to_complex()
amp = gr.multiply_const_ff(amplitude)
##################################################
# Blocks
##################################################
freq = 915e6
rx_gain = 1
tx = uhd.usrp_sink(
device_addr="",
io_type=uhd.io_type.COMPLEX_FLOAT32,
num_channels=1,
)
print "tx: get sample rate:"
print (tx.get_samp_rate())
tx.set_samp_rate(128e6/interp_rate)
print "tx: get sample rate:"
print (tx.get_samp_rate())
r = tx.set_center_freq(freq, 0)
rx = uhd.usrp_source(
device_addr="",
io_type=uhd.io_type.COMPLEX_FLOAT32,
num_channels=1,
)
print "rx: get samp rate"
print (rx.get_samp_rate())
r = rx.set_samp_rate(64e6/dec_rate)
print "rx: get samp rate"
print (rx.get_samp_rate())
r = rx.set_center_freq(freq, 0)
print "rx: get gain "
print (rx.get_gain_range())
r = rx.set_gain(rx_gain, 0)
print "rx: get gain "
print (rx.get_gain())
command_gate.set_ctrl_out(self.reader.ctrl_q())
tag_decoder.set_ctrl_out(self.reader.ctrl_q())
#########Build Graph
self.connect(rx, matched_filt)
self.connect(matched_filt, command_gate)
self.connect(command_gate, to_mag)
# self.connect(command_gate, agc)
# self.connect(agc, to_mag)
self.connect(to_mag, center, mm, tag_decoder)
# self.connect(to_mag, center, matched_filt_tag_decode, tag_decoder)
self.connect(tag_decoder, self.reader)
self.connect(self.reader, amp)
self.connect(amp, to_complex)
self.connect(to_complex, tx)
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="Amaviation Agc")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Variables
##################################################
self.sql_threshold = sql_threshold = -30
self.samp_rate = samp_rate = 1000000
self.frq_offset = frq_offset = 0
self.base_frq = base_frq = 131725000
##################################################
# Blocks
##################################################
_sql_threshold_sizer = wx.BoxSizer(wx.VERTICAL)
self._sql_threshold_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_sql_threshold_sizer,
value=self.sql_threshold,
callback=self.set_sql_threshold,
label="Squelch Threshold",
converter=forms.float_converter(),
proportion=0,
)
self._sql_threshold_slider = forms.slider(
parent=self.GetWin(),
sizer=_sql_threshold_sizer,
value=self.sql_threshold,
callback=self.set_sql_threshold,
minimum=-100,
maximum=0,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.Add(_sql_threshold_sizer)
_frq_offset_sizer = wx.BoxSizer(wx.VERTICAL)
self._frq_offset_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_frq_offset_sizer,
value=self.frq_offset,
callback=self.set_frq_offset,
label="Frequency Offset",
converter=forms.float_converter(),
proportion=0,
)
self._frq_offset_slider = forms.slider(
parent=self.GetWin(),
sizer=_frq_offset_sizer,
value=self.frq_offset,
callback=self.set_frq_offset,
minimum=-100000,
maximum=100000,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.Add(_frq_offset_sizer)
self._base_frq_text_box = forms.text_box(
parent=self.GetWin(),
value=self.base_frq,
callback=self.set_base_frq,
label="Base frequency",
converter=forms.float_converter(),
)
self.Add(self._base_frq_text_box)
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT Plot",
peak_hold=False,
)
self.Add(self.wxgui_fftsink2_0.win)
self.rtl2832_source_0 = baz.rtl_source_c(defer_creation=True)
self.rtl2832_source_0.set_verbose(True)
self.rtl2832_source_0.set_vid(0x0)
self.rtl2832_source_0.set_pid(0x0)
self.rtl2832_source_0.set_tuner_name("")
self.rtl2832_source_0.set_default_timeout(0)
self.rtl2832_source_0.set_use_buffer(True)
self.rtl2832_source_0.set_fir_coefficients(([]))
if self.rtl2832_source_0.create() == False:
raise Exception(
"Failed to create RTL2832 Source: rtl2832_source_0")
self.rtl2832_source_0.set_bandwidth(300000)
self.rtl2832_source_0.set_sample_rate(samp_rate)
self.rtl2832_source_0.set_frequency(base_frq + frq_offset)
self.rtl2832_source_0.set_gain_mode("sensitive")
self.rtl2832_source_0.set_auto_gain_mode(False)
self.rtl2832_source_0.set_relative_gain(True)
self.rtl2832_source_0.set_gain(30)
self.gr_simple_squelch_cc_0 = gr.simple_squelch_cc(
sql_threshold, 0.0001)
self.gr_agc2_xx_0 = gr.agc2_cc(100e-3, 200e-3, 1.0, 1.0, 2.0)
self.blks2_rational_resampler_xxx_0 = blks2.rational_resampler_ccc(
interpolation=48,
decimation=1000,
taps=None,
fractional_bw=None,
)
self.blks2_am_demod_cf_0 = blks2.am_demod_cf(
channel_rate=48000,
audio_decim=1,
audio_pass=5000,
audio_stop=5500,
)
self.audio_sink_0 = audio.sink(48000, "pulse", True)
##################################################
# Connections
##################################################
self.connect((self.rtl2832_source_0, 0), (self.wxgui_fftsink2_0, 0))
self.connect((self.blks2_am_demod_cf_0, 0), (self.audio_sink_0, 0))
self.connect((self.blks2_rational_resampler_xxx_0, 0),
(self.gr_simple_squelch_cc_0, 0))
self.connect((self.gr_simple_squelch_cc_0, 0), (self.gr_agc2_xx_0, 0))
self.connect((self.gr_agc2_xx_0, 0), (self.blks2_am_demod_cf_0, 0))
self.connect((self.rtl2832_source_0, 0),
(self.blks2_rational_resampler_xxx_0, 0))
def __init__(self):
gr.top_block.__init__(self, "Uhd Snr Receiver")
Qt.QWidget.__init__(self)
self.setWindowTitle("Uhd Snr Receiver")
self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
self.top_scroll_layout = Qt.QVBoxLayout()
self.setLayout(self.top_scroll_layout)
self.top_scroll = Qt.QScrollArea()
self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
self.top_scroll_layout.addWidget(self.top_scroll)
self.top_scroll.setWidgetResizable(True)
self.top_widget = Qt.QWidget()
self.top_scroll.setWidget(self.top_widget)
self.top_layout = Qt.QVBoxLayout(self.top_widget)
self.top_grid_layout = Qt.QGridLayout()
self.top_layout.addLayout(self.top_grid_layout)
self.settings = Qt.QSettings("GNU Radio", "uhd_snr_receiver")
self.restoreGeometry(self.settings.value("geometry").toByteArray())
##################################################
# Variables
##################################################
self.sps = sps = 4
self.nfilts = nfilts = 32
self.samp_rate = samp_rate = 1e6
self.rrc_taps = rrc_taps = filter.firdes.root_raised_cosine(
nfilts, nfilts, 1.0 / float(sps), 0.35, 11 * sps * nfilts)
self.gain = gain = 15
self.freq = freq = 520e6
self.fine_freq = fine_freq = -28400
##################################################
# Blocks
##################################################
self._gain_layout = Qt.QVBoxLayout()
self._gain_tool_bar = Qt.QToolBar(self)
self._gain_layout.addWidget(self._gain_tool_bar)
self._gain_tool_bar.addWidget(Qt.QLabel("RX Gain" + ": "))
self._gain_counter = Qwt.QwtCounter()
self._gain_counter.setRange(0, 31.5, 0.5)
self._gain_counter.setNumButtons(2)
self._gain_counter.setValue(self.gain)
self._gain_tool_bar.addWidget(self._gain_counter)
self._gain_counter.valueChanged.connect(self.set_gain)
self._gain_slider = Qwt.QwtSlider(None, Qt.Qt.Horizontal,
Qwt.QwtSlider.BottomScale,
Qwt.QwtSlider.BgSlot)
self._gain_slider.setRange(0, 31.5, 0.5)
self._gain_slider.setValue(self.gain)
self._gain_slider.setMinimumWidth(200)
self._gain_slider.valueChanged.connect(self.set_gain)
self._gain_layout.addWidget(self._gain_slider)
self.top_layout.addLayout(self._gain_layout)
self._freq_layout = Qt.QVBoxLayout()
self._freq_tool_bar = Qt.QToolBar(self)
self._freq_layout.addWidget(self._freq_tool_bar)
self._freq_tool_bar.addWidget(Qt.QLabel("Frequency" + ": "))
self._freq_counter = Qwt.QwtCounter()
self._freq_counter.setRange(514e6, 526e6, 1e6)
self._freq_counter.setNumButtons(2)
self._freq_counter.setValue(self.freq)
self._freq_tool_bar.addWidget(self._freq_counter)
self._freq_counter.valueChanged.connect(self.set_freq)
self._freq_slider = Qwt.QwtSlider(None, Qt.Qt.Horizontal,
Qwt.QwtSlider.BottomScale,
Qwt.QwtSlider.BgSlot)
self._freq_slider.setRange(514e6, 526e6, 1e6)
self._freq_slider.setValue(self.freq)
self._freq_slider.setMinimumWidth(200)
self._freq_slider.valueChanged.connect(self.set_freq)
self._freq_layout.addWidget(self._freq_slider)
self.top_grid_layout.addLayout(self._freq_layout, 2, 0, 1, 1)
self._fine_freq_layout = Qt.QVBoxLayout()
self._fine_freq_tool_bar = Qt.QToolBar(self)
self._fine_freq_layout.addWidget(self._fine_freq_tool_bar)
self._fine_freq_tool_bar.addWidget(Qt.QLabel("Fine Frequency" + ": "))
self._fine_freq_counter = Qwt.QwtCounter()
self._fine_freq_counter.setRange(-50e3, 50e3, 100)
self._fine_freq_counter.setNumButtons(2)
self._fine_freq_counter.setValue(self.fine_freq)
self._fine_freq_tool_bar.addWidget(self._fine_freq_counter)
self._fine_freq_counter.valueChanged.connect(self.set_fine_freq)
self._fine_freq_slider = Qwt.QwtSlider(None, Qt.Qt.Horizontal,
Qwt.QwtSlider.BottomScale,
Qwt.QwtSlider.BgSlot)
self._fine_freq_slider.setRange(-50e3, 50e3, 100)
self._fine_freq_slider.setValue(self.fine_freq)
self._fine_freq_slider.setMinimumWidth(200)
self._fine_freq_slider.valueChanged.connect(self.set_fine_freq)
self._fine_freq_layout.addWidget(self._fine_freq_slider)
self.top_grid_layout.addLayout(self._fine_freq_layout, 2, 1, 1, 1)
self.uhd_usrp_source_0 = uhd.usrp_source(
device_addr="",
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.uhd_usrp_source_0.set_samp_rate(samp_rate)
self.uhd_usrp_source_0.set_center_freq(freq + fine_freq, 0)
self.uhd_usrp_source_0.set_gain(gain, 0)
self.uhd_usrp_source_0.set_antenna("TX/RX", 0)
self.qtgui_time_sink_x_0_0 = qtgui.time_sink_c(
500, #size
samp_rate, #bw
"QT GUI Plot", #name
3 #number of inputs
)
self._qtgui_time_sink_x_0_0_win = sip.wrapinstance(
self.qtgui_time_sink_x_0_0.pyqwidget(), Qt.QWidget)
self.top_grid_layout.addWidget(self._qtgui_time_sink_x_0_0_win, 0, 0,
1, 1)
self.qtgui_freq_sink_x_0 = qtgui.freq_sink_c(
1024, #size
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
1 #number of inputs
)
self._qtgui_freq_sink_x_0_win = sip.wrapinstance(
self.qtgui_freq_sink_x_0.pyqwidget(), Qt.QWidget)
self.top_grid_layout.addWidget(self._qtgui_freq_sink_x_0_win, 1, 0, 1,
2)
self.qtgui_const_sink_x_0 = qtgui.const_sink_c(
1024, #size
"QT GUI Plot", #name
2 #number of inputs
)
self._qtgui_const_sink_x_0_win = sip.wrapinstance(
self.qtgui_const_sink_x_0.pyqwidget(), Qt.QWidget)
self.top_grid_layout.addWidget(self._qtgui_const_sink_x_0_win, 0, 1, 1,
1)
self.gr_multiply_xx_0 = gr.multiply_vcc(1)
self.gr_agc2_xx_0 = gr.agc2_cc(1e-1, 1e-2, 1.0, 1.0, 0.0)
self.digital_pfb_clock_sync_xxx_0 = digital.pfb_clock_sync_ccf(
sps, 2 * 3.14 / 100.0, (rrc_taps), nfilts, nfilts / 2, 1.5, 1)
self.digital_mpsk_snr_est_cc_0_1 = digital.mpsk_snr_est_cc(
3, 10000, 0.001)
self.digital_mpsk_snr_est_cc_0_0 = digital.mpsk_snr_est_cc(
2, 10000, 0.001)
self.digital_mpsk_snr_est_cc_0 = digital.mpsk_snr_est_cc(
0, 10000, 0.001)
self.digital_lms_dd_equalizer_cc_0 = digital.lms_dd_equalizer_cc(
15, 0.010, 1,
digital.constellation_qpsk().base())
self.digital_costas_loop_cc_0 = digital.costas_loop_cc(
2 * 3.14 / 100.0, 4)
##################################################
# Connections
##################################################
self.connect((self.digital_pfb_clock_sync_xxx_0, 0),
(self.digital_mpsk_snr_est_cc_0, 0))
self.connect((self.gr_multiply_xx_0, 0), (self.qtgui_freq_sink_x_0, 0))
self.connect((self.digital_lms_dd_equalizer_cc_0, 0),
(self.qtgui_const_sink_x_0, 1))
self.connect((self.gr_agc2_xx_0, 0), (self.gr_multiply_xx_0, 3))
self.connect((self.gr_agc2_xx_0, 0), (self.gr_multiply_xx_0, 2))
self.connect((self.gr_agc2_xx_0, 0), (self.gr_multiply_xx_0, 1))
self.connect((self.gr_agc2_xx_0, 0), (self.gr_multiply_xx_0, 0))
self.connect((self.gr_agc2_xx_0, 0),
(self.digital_pfb_clock_sync_xxx_0, 0))
self.connect((self.digital_pfb_clock_sync_xxx_0, 0),
(self.digital_costas_loop_cc_0, 0))
self.connect((self.digital_costas_loop_cc_0, 0),
(self.digital_lms_dd_equalizer_cc_0, 0))
self.connect((self.digital_costas_loop_cc_0, 0),
(self.qtgui_const_sink_x_0, 0))
self.connect((self.uhd_usrp_source_0, 0), (self.gr_agc2_xx_0, 0))
self.connect((self.digital_pfb_clock_sync_xxx_0, 0),
(self.digital_mpsk_snr_est_cc_0_0, 0))
self.connect((self.digital_pfb_clock_sync_xxx_0, 0),
(self.digital_mpsk_snr_est_cc_0_1, 0))
self.connect((self.digital_mpsk_snr_est_cc_0, 0),
(self.qtgui_time_sink_x_0_0, 0))
self.connect((self.digital_mpsk_snr_est_cc_0_0, 0),
(self.qtgui_time_sink_x_0_0, 1))
self.connect((self.digital_mpsk_snr_est_cc_0_1, 0),
(self.qtgui_time_sink_x_0_0, 2))
def __init__(self,
antenna="TX/RX",
rx_gain=30,
vor_samp_rate=250e3,
com_freq_1=135.275e6,
gain=21,
vor_freq_1=115e6):
grc_wxgui.top_block_gui.__init__(self, title="Simple Trx")
##################################################
# Parameters
##################################################
self.antenna = antenna
self.rx_gain = rx_gain
self.vor_samp_rate = vor_samp_rate
self.com_freq_1 = com_freq_1
self.gain = gain
self.vor_freq_1 = vor_freq_1
##################################################
# Variables
##################################################
self.obs_decimation = obs_decimation = 25
self.ils_decimation = ils_decimation = 50
self.am_sample_rate = am_sample_rate = 12.5e3
self.vor_volume_slider = vor_volume_slider = 5
self.vor_ident = vor_ident = False
self.vor_freq_entry_1 = vor_freq_entry_1 = vor_freq_1
self.vor_center_freq_0 = vor_center_freq_0 = (117.95e6 -
108.00e6) / 2 + 117.95e6
self.system_center_freq = system_center_freq = 133.9e6
self.squelch_slider = squelch_slider = -85
self.samp_rate = samp_rate = 250e3
self.rxgain = rxgain = 15
self.phase_correction = phase_correction = 5
self.obs_sample_rate = obs_sample_rate = am_sample_rate / obs_decimation
self.ils_sample_rate = ils_sample_rate = am_sample_rate / ils_decimation
self.gain_slider = gain_slider = gain
self.correction_gain = correction_gain = 0.8
self.com_volume_slider = com_volume_slider = 1
self.com_freq_entry_1 = com_freq_entry_1 = com_freq_1
self.com_enable = com_enable = True
self.audio_select = audio_select = 0
self.audio_sample_rate = audio_sample_rate = 48e3
self.am_decimation = am_decimation = 1
##################################################
# Blocks
##################################################
_vor_volume_slider_sizer = wx.BoxSizer(wx.VERTICAL)
self._vor_volume_slider_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_vor_volume_slider_sizer,
value=self.vor_volume_slider,
callback=self.set_vor_volume_slider,
label='vor_volume_slider',
converter=forms.float_converter(),
proportion=0,
)
self._vor_volume_slider_slider = forms.slider(
parent=self.GetWin(),
sizer=_vor_volume_slider_sizer,
value=self.vor_volume_slider,
callback=self.set_vor_volume_slider,
minimum=0,
maximum=10,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_vor_volume_slider_sizer, 1, 4, 1, 1)
self._vor_ident_check_box = forms.check_box(
parent=self.GetWin(),
value=self.vor_ident,
callback=self.set_vor_ident,
label='vor_ident',
true=1,
false=0,
)
self.GridAdd(self._vor_ident_check_box, 0, 3, 1, 1)
self._vor_freq_entry_1_text_box = forms.text_box(
parent=self.GetWin(),
value=self.vor_freq_entry_1,
callback=self.set_vor_freq_entry_1,
label='vor_freq_entry_1',
converter=forms.float_converter(),
)
self.GridAdd(self._vor_freq_entry_1_text_box, 0, 1, 1, 1)
self.notebook_0 = self.notebook_0 = wx.Notebook(self.GetWin(),
style=wx.NB_TOP)
self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0),
"RF Analyzer")
self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0),
"Channel FFT")
self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0),
"Demod Audio FFT")
self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0),
"Ref and Phase Scope")
self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0),
"Manipulated Ref and Phase")
self.Add(self.notebook_0)
_com_volume_slider_sizer = wx.BoxSizer(wx.VERTICAL)
self._com_volume_slider_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_com_volume_slider_sizer,
value=self.com_volume_slider,
callback=self.set_com_volume_slider,
label='com_volume_slider',
converter=forms.float_converter(),
proportion=0,
)
self._com_volume_slider_slider = forms.slider(
parent=self.GetWin(),
sizer=_com_volume_slider_sizer,
value=self.com_volume_slider,
callback=self.set_com_volume_slider,
minimum=0,
maximum=10,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_com_volume_slider_sizer, 1, 5, 1, 1)
self._com_freq_entry_1_text_box = forms.text_box(
parent=self.GetWin(),
value=self.com_freq_entry_1,
callback=self.set_com_freq_entry_1,
label='com_freq_entry_1',
converter=forms.float_converter(),
)
self.GridAdd(self._com_freq_entry_1_text_box, 0, 0, 1, 1)
self._com_enable_check_box = forms.check_box(
parent=self.GetWin(),
value=self.com_enable,
callback=self.set_com_enable,
label='com_enable',
true=1,
false=0,
)
self.GridAdd(self._com_enable_check_box, 2, 3, 1, 1)
self.wxgui_scopesink2_0 = scopesink2.scope_sink_f(
self.notebook_0.GetPage(3).GetWin(),
title="Scope Plot",
sample_rate=12.5e3,
v_scale=0,
v_offset=0,
t_scale=0,
ac_couple=False,
xy_mode=False,
num_inputs=2,
trig_mode=gr.gr_TRIG_MODE_AUTO,
y_axis_label="Counts",
)
self.notebook_0.GetPage(3).Add(self.wxgui_scopesink2_0.win)
self.wxgui_numbersink2_0 = numbersink2.number_sink_f(
self.GetWin(),
unit="Units",
minval=-200,
maxval=200,
factor=1.0,
decimal_places=10,
ref_level=0,
sample_rate=25e3 / 2000,
number_rate=15,
average=True,
avg_alpha=0.02,
label="Number Plot",
peak_hold=False,
show_gauge=True,
)
self.Add(self.wxgui_numbersink2_0.win)
self.wxgui_fftsink2_0_1 = fftsink2.fft_sink_c(
self.notebook_0.GetPage(0).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=25e3,
fft_size=1024,
fft_rate=5,
average=False,
avg_alpha=None,
title="FFT Plot",
peak_hold=False,
)
self.notebook_0.GetPage(0).Add(self.wxgui_fftsink2_0_1.win)
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.notebook_0.GetPage(1).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=12.5e3,
fft_size=1024,
fft_rate=5,
average=False,
avg_alpha=None,
title="FFT Plot",
peak_hold=False,
)
self.notebook_0.GetPage(1).Add(self.wxgui_fftsink2_0.win)
self.uhd_usrp_source_0 = uhd.usrp_source(
device_addr="",
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(2),
),
)
self.uhd_usrp_source_0.set_clock_source("internal", 0)
self.uhd_usrp_source_0.set_subdev_spec("A:0 A:0", 0)
self.uhd_usrp_source_0.set_samp_rate(vor_samp_rate)
self.uhd_usrp_source_0.set_center_freq(
uhd.tune_request(com_freq_entry_1,
rf_freq=system_center_freq,
rf_freq_policy=uhd.tune_request.POLICY_MANUAL), 0)
self.uhd_usrp_source_0.set_gain(rx_gain, 0)
self.uhd_usrp_source_0.set_antenna("RX2", 0)
self.uhd_usrp_source_0.set_center_freq(
uhd.tune_request(vor_freq_entry_1,
rf_freq=system_center_freq,
rf_freq_policy=uhd.tune_request.POLICY_MANUAL), 1)
self.uhd_usrp_source_0.set_gain(rx_gain, 1)
self.uhd_usrp_source_0.set_antenna("RX2", 1)
self.uhd_usrp_sink_0 = uhd.usrp_sink(
device_addr="",
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.uhd_usrp_sink_0.set_samp_rate(250e3)
self.uhd_usrp_sink_0.set_center_freq(com_freq_entry_1, 0)
self.uhd_usrp_sink_0.set_gain(25, 0)
self.uhd_usrp_sink_0.set_antenna("TX/RX", 0)
_squelch_slider_sizer = wx.BoxSizer(wx.VERTICAL)
self._squelch_slider_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_squelch_slider_sizer,
value=self.squelch_slider,
callback=self.set_squelch_slider,
label='squelch_slider',
converter=forms.float_converter(),
proportion=0,
)
self._squelch_slider_slider = forms.slider(
parent=self.GetWin(),
sizer=_squelch_slider_sizer,
value=self.squelch_slider,
callback=self.set_squelch_slider,
minimum=-100,
maximum=0,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_squelch_slider_sizer, 1, 0, 1, 1)
self.squelch = gr.pwr_squelch_cc(squelch_slider, 0.01, 20, False)
self.openavionics_joystick_interface_0 = openavionics.joystick_interface(
)
self.openavionics_audio_ptt_0 = openavionics.audio_ptt()
self.low_pass_filter_3_0 = filter.fir_filter_fff(
5, firdes.low_pass(1, 25e3, 200, 50, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_3 = filter.fir_filter_fff(
5, firdes.low_pass(1, 25e3, 200, 50, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_2 = filter.fir_filter_ccf(
1, firdes.low_pass(1, 25e3, 3e3, 500, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_1 = filter.interp_fir_filter_fff(
1, firdes.low_pass(1, 12.5e3, 3e3, 1e3, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0_0 = filter.fir_filter_ccf(
int(250e3 / 25e3),
firdes.low_pass(1, vor_samp_rate, 11e3, 1e3, firdes.WIN_HAMMING,
6.76))
self.low_pass_filter_0 = filter.fir_filter_ccf(
int(250e3 / 12.5e3),
firdes.low_pass(1, vor_samp_rate, 10e3, 1e3, firdes.WIN_HAMMING,
6.76))
self.gr_sig_source_x_0 = gr.sig_source_c(25e3, gr.GR_COS_WAVE, 9960, 1,
0)
self.gr_quadrature_demod_cf_0 = gr.quadrature_demod_cf(1)
self.gr_pwr_squelch_xx_0 = gr.pwr_squelch_ff(-50, 0.5, 1, False)
self.gr_null_sink_0_0 = gr.null_sink(gr.sizeof_gr_complex * 1)
self.gr_multiply_xx_0_0_1 = gr.multiply_vff(1)
self.gr_multiply_xx_0_0_0_0 = gr.multiply_vcc(1)
self.gr_multiply_xx_0 = gr.multiply_vcc(1)
self.gr_float_to_complex_0_0_0 = gr.float_to_complex(1)
self.gr_float_to_complex_0 = gr.float_to_complex(1)
self.gr_agc2_xx_0_0 = gr.agc2_cc(1, 1, 0.75, 1.0, 0.0)
self.gr_agc2_xx_0 = gr.agc2_cc(1, 1, 0.75, 1.0, 0.0)
self.gr_add_xx_0_0_0 = gr.add_vff(1)
_gain_slider_sizer = wx.BoxSizer(wx.VERTICAL)
self._gain_slider_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_gain_slider_sizer,
value=self.gain_slider,
callback=self.set_gain_slider,
label='gain_slider',
converter=forms.float_converter(),
proportion=0,
)
self._gain_slider_slider = forms.slider(
parent=self.GetWin(),
sizer=_gain_slider_sizer,
value=self.gain_slider,
callback=self.set_gain_slider,
minimum=0,
maximum=30,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_gain_slider_sizer, 1, 1, 1, 1)
self.fft_tone_to_angle_0 = fft_tone_to_angle(
fft_bin=12,
fft_size=2000,
)
self.const_source_x_0_1 = gr.sig_source_f(0, gr.GR_CONST_WAVE, 0, 0,
0.450)
self.const_source_x_0_0_1 = gr.sig_source_f(0, gr.GR_CONST_WAVE, 0, 0,
0.550)
self.const_source_x_0_0_0_0 = gr.sig_source_c(0, gr.GR_CONST_WAVE, 0,
0, 0.450)
self.blocks_null_sink_1 = blocks.null_sink(gr.sizeof_float * 1)
self.blocks_null_sink_0 = blocks.null_sink(gr.sizeof_float * 1)
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vff(
(180.0 / 3.1415, ))
self.blocks_add_xx_0 = blocks.add_vff(1)
self.blks2_rational_resampler_xxx_2_0 = blks2.rational_resampler_fff(
interpolation=250,
decimation=48,
taps=None,
fractional_bw=None,
)
self.blks2_rational_resampler_xxx_1 = blks2.rational_resampler_fff(
interpolation=480,
decimation=125,
taps=None,
fractional_bw=None,
)
self.blks2_am_demod_cf_0_0 = blks2.am_demod_cf(
channel_rate=25e3,
audio_decim=am_decimation,
audio_pass=11.5e3,
audio_stop=12.250e3,
)
self.blks2_am_demod_cf_0 = blks2.am_demod_cf(
channel_rate=am_sample_rate,
audio_decim=am_decimation,
audio_pass=3e3,
audio_stop=4e3,
)
self.band_pass_filter_0 = gr.fir_filter_fff(
2,
firdes.band_pass(1, 25000, 980, 1150, 50, firdes.WIN_HAMMING,
6.76))
self.audio_sink_0 = audio.sink(int(audio_sample_rate), "", True)
self._audio_select_chooser = forms.drop_down(
parent=self.GetWin(),
value=self.audio_select,
callback=self.set_audio_select,
label='audio_select',
choices=[0, 1],
labels=['AM Voice', 'VOR Subcarrier'],
)
self.GridAdd(self._audio_select_chooser, 0, 2, 1, 1)
self.analog_sig_source_x_0_0 = analog.sig_source_f(
48000, analog.GR_COS_WAVE, 1000, 1, 0)
self.adsf_0 = blocks.multiply_const_vff(
(com_enable * com_volume_slider, ))
self.adsf = blocks.multiply_const_vff(
(vor_ident * vor_volume_slider, ))
##################################################
# Connections
##################################################
self.connect((self.gr_float_to_complex_0, 0),
(self.gr_multiply_xx_0, 0))
self.connect((self.blks2_rational_resampler_xxx_1, 0),
(self.audio_sink_0, 0))
self.connect((self.blks2_am_demod_cf_0, 0),
(self.low_pass_filter_1, 0))
self.connect((self.uhd_usrp_source_0, 0), (self.low_pass_filter_0, 0))
self.connect((self.uhd_usrp_source_0, 1), (self.gr_null_sink_0_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.squelch, 0))
self.connect((self.squelch, 0), (self.gr_agc2_xx_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.wxgui_fftsink2_0, 0))
self.connect((self.gr_agc2_xx_0, 0), (self.blks2_am_demod_cf_0, 0))
self.connect((self.low_pass_filter_0_0, 0),
(self.wxgui_fftsink2_0_1, 0))
self.connect((self.gr_agc2_xx_0_0, 0), (self.blks2_am_demod_cf_0_0, 0))
self.connect((self.uhd_usrp_source_0, 1),
(self.low_pass_filter_0_0, 0))
self.connect((self.blks2_am_demod_cf_0_0, 0),
(self.gr_float_to_complex_0, 0))
self.connect((self.fft_tone_to_angle_0, 0),
(self.blocks_multiply_const_vxx_0, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0),
(self.wxgui_numbersink2_0, 0))
self.connect((self.fft_tone_to_angle_0, 1),
(self.blocks_null_sink_0, 0))
self.connect((self.fft_tone_to_angle_0, 2),
(self.blocks_null_sink_1, 0))
self.connect((self.low_pass_filter_0_0, 0), (self.gr_agc2_xx_0_0, 0))
self.connect((self.gr_quadrature_demod_cf_0, 0),
(self.low_pass_filter_3, 0))
self.connect((self.low_pass_filter_3, 0),
(self.fft_tone_to_angle_0, 0))
self.connect((self.low_pass_filter_3_0, 0),
(self.fft_tone_to_angle_0, 1))
self.connect((self.blks2_am_demod_cf_0_0, 0),
(self.low_pass_filter_3_0, 0))
self.connect((self.blks2_am_demod_cf_0_0, 0),
(self.gr_float_to_complex_0, 1))
self.connect((self.gr_multiply_xx_0, 0), (self.low_pass_filter_2, 0))
self.connect((self.gr_sig_source_x_0, 0), (self.gr_multiply_xx_0, 1))
self.connect((self.low_pass_filter_2, 0),
(self.gr_quadrature_demod_cf_0, 0))
self.connect((self.blks2_am_demod_cf_0_0, 0),
(self.band_pass_filter_0, 0))
self.connect((self.adsf, 0), (self.blocks_add_xx_0, 1))
self.connect((self.blocks_add_xx_0, 0),
(self.blks2_rational_resampler_xxx_1, 0))
self.connect((self.adsf, 0), (self.wxgui_scopesink2_0, 1))
self.connect((self.low_pass_filter_1, 0), (self.adsf_0, 0))
self.connect((self.adsf_0, 0), (self.blocks_add_xx_0, 0))
self.connect((self.adsf_0, 0), (self.wxgui_scopesink2_0, 0))
self.connect((self.band_pass_filter_0, 0),
(self.gr_pwr_squelch_xx_0, 0))
self.connect((self.gr_pwr_squelch_xx_0, 0), (self.adsf, 0))
self.connect((self.const_source_x_0_0_0_0, 0),
(self.gr_multiply_xx_0_0_0_0, 1))
self.connect((self.gr_float_to_complex_0_0_0, 0),
(self.gr_multiply_xx_0_0_0_0, 0))
self.connect((self.gr_add_xx_0_0_0, 0),
(self.gr_float_to_complex_0_0_0, 1))
self.connect((self.gr_add_xx_0_0_0, 0),
(self.gr_float_to_complex_0_0_0, 0))
self.connect((self.const_source_x_0_0_1, 0), (self.gr_add_xx_0_0_0, 1))
self.connect((self.gr_multiply_xx_0_0_1, 0), (self.gr_add_xx_0_0_0, 0))
self.connect((self.const_source_x_0_1, 0),
(self.gr_multiply_xx_0_0_1, 1))
self.connect((self.gr_multiply_xx_0_0_0_0, 0),
(self.uhd_usrp_sink_0, 0))
self.connect((self.blks2_rational_resampler_xxx_2_0, 0),
(self.openavionics_audio_ptt_0, 0))
self.connect((self.analog_sig_source_x_0_0, 0),
(self.blks2_rational_resampler_xxx_2_0, 0))
self.connect((self.openavionics_audio_ptt_0, 0),
(self.gr_multiply_xx_0_0_1, 0))
##################################################
# Asynch Message Connections
##################################################
self.msg_connect(self.openavionics_joystick_interface_0, "out",
self.openavionics_audio_ptt_0, "in2")
def __init__(self): grc_wxgui.top_block_gui.__init__(self, title="Top Block") _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png" self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY)) ################################################## # Variables ################################################## self.samp_rate = samp_rate = 8*2**10 self.nsps_mod = nsps_mod = 4 self.noise = noise = .1 self.freq_off = freq_off = 0 self.ebw_mod = ebw_mod = 0.35 ################################################## # Notebooks ################################################## self.n0 = wx.Notebook(self.GetWin(), style=wx.NB_TOP) self.n0.AddPage(grc_wxgui.Panel(self.n0), "tab1") self.n0.AddPage(grc_wxgui.Panel(self.n0), "tab2") self.n0.AddPage(grc_wxgui.Panel(self.n0), "tab3") self.Add(self.n0) ################################################## # Controls ################################################## _nsps_mod_sizer = wx.BoxSizer(wx.VERTICAL) self._nsps_mod_text_box = forms.text_box( parent=self.GetWin(), sizer=_nsps_mod_sizer, value=self.nsps_mod, callback=self.set_nsps_mod, label="Samples per symbol for DPSK modulator", converter=forms.int_converter(), proportion=0, ) self._nsps_mod_slider = forms.slider( parent=self.GetWin(), sizer=_nsps_mod_sizer, value=self.nsps_mod, callback=self.set_nsps_mod, minimum=2, maximum=32, num_steps=31, style=wx.SL_HORIZONTAL, cast=int, proportion=1, ) self.Add(_nsps_mod_sizer) _noise_sizer = wx.BoxSizer(wx.VERTICAL) self._noise_text_box = forms.text_box( parent=self.GetWin(), sizer=_noise_sizer, value=self.noise, callback=self.set_noise, label="Noise", converter=forms.float_converter(), proportion=0, ) self._noise_slider = forms.slider( parent=self.GetWin(), sizer=_noise_sizer, value=self.noise, callback=self.set_noise, minimum=0, maximum=1, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.Add(_noise_sizer) _freq_off_sizer = wx.BoxSizer(wx.VERTICAL) self._freq_off_text_box = forms.text_box( parent=self.GetWin(), sizer=_freq_off_sizer, value=self.freq_off, callback=self.set_freq_off, label="Freq Offset", converter=forms.float_converter(), proportion=0, ) self._freq_off_slider = forms.slider( parent=self.GetWin(), sizer=_freq_off_sizer, value=self.freq_off, callback=self.set_freq_off, minimum=-.5, maximum=.5, num_steps=1000, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.Add(_freq_off_sizer) _ebw_mod_sizer = wx.BoxSizer(wx.VERTICAL) self._ebw_mod_text_box = forms.text_box( parent=self.GetWin(), sizer=_ebw_mod_sizer, value=self.ebw_mod, callback=self.set_ebw_mod, label="Excess BW for DPSK modulator", converter=forms.float_converter(), proportion=0, ) self._ebw_mod_slider = forms.slider( parent=self.GetWin(), sizer=_ebw_mod_sizer, value=self.ebw_mod, callback=self.set_ebw_mod, minimum=00.01, maximum=10.00, num_steps=10*100-1, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.Add(_ebw_mod_sizer) ################################################## # Blocks ################################################## self.blks2_dxpsk2_mod_0 = blks2.dqpsk2_mod( samples_per_symbol=nsps_mod, excess_bw=ebw_mod, gray_code=True, verbose=False, log=False, ) self.blks2_packet_encoder_0 = grc_blks2.packet_mod_b(grc_blks2.packet_encoder( samples_per_symbol=1, bits_per_symbol=1, access_code="", pad_for_usrp=True, ), payload_length=0, ) self.gr_agc2_xx_0 = gr.agc2_cc(1e-1, 1e-2, 1.0, 1.0, 1e3) self.gr_channel_model_0 = gr.channel_model( noise_voltage=noise, frequency_offset=freq_off, epsilon=1.0, taps=(16.0, ), noise_seed=42, ) self.gr_throttle_1_0 = gr.throttle(gr.sizeof_gr_complex*1, samp_rate*nsps_mod*8) self.random_source_x_0 = gr.vector_source_b(map(int, numpy.random.randint(0, 2, 1000)), True) self.wxgui_constellationsink2_0 = constsink_gl.const_sink_c( self.n0.GetPage(1).GetWin(), title="Constellation Plot", sample_rate=samp_rate*8*nsps_mod/2, frame_rate=5, const_size=512, M=4, theta=0, alpha=0.005, fmax=0.5, mu=0.5, gain_mu=0.005, symbol_rate=samp_rate*8/2, omega_limit=0.005, ) self.n0.GetPage(1).Add(self.wxgui_constellationsink2_0.win) ################################################## # Connections ################################################## self.connect((self.blks2_packet_encoder_0, 0), (self.blks2_dxpsk2_mod_0, 0)) self.connect((self.random_source_x_0, 0), (self.blks2_packet_encoder_0, 0)) self.connect((self.gr_channel_model_0, 0), (self.gr_agc2_xx_0, 0)) self.connect((self.gr_throttle_1_0, 0), (self.wxgui_constellationsink2_0, 0)) self.connect((self.blks2_dxpsk2_mod_0, 0), (self.gr_channel_model_0, 0)) self.connect((self.gr_agc2_xx_0, 0), (self.gr_throttle_1_0, 0))
def test_005(self):
''' Test the complex AGC loop (attack and decay rate inputs) '''
fg = self.fg
expected_result = \
((100.000244140625+7.2191943445432116e-07j),
(0.80881959199905396+0.58764183521270752j),
(0.30894950032234192+0.95084899663925171j),
(-0.30895623564720154+0.95086973905563354j),
(-0.80887287855148315+0.58768033981323242j),
(-0.99984413385391235+5.850709250410091e-09j),
(-0.80889981985092163-0.58770018815994263j),
(-0.30897706747055054-0.95093393325805664j),
(0.30898112058639526-0.95094609260559082j),
(0.80893135070800781-0.58772283792495728j),
(0.99990922212600708-8.7766354184282136e-09j),
(0.80894720554351807+0.58773452043533325j),
(0.30899339914321899+0.95098406076431274j),
(-0.30899572372436523+0.95099133253097534j),
(-0.80896598100662231+0.58774799108505249j),
(-0.99994778633117676+1.4628290578855285e-08j),
(-0.80897533893585205-0.58775502443313599j),
(-0.30900305509567261-0.95101380348205566j),
(0.30900448560714722-0.95101797580718994j),
(0.80898630619049072-0.58776277303695679j),
(0.99997037649154663-1.7554345532744264e-08j),
(0.80899184942245483+0.58776694536209106j),
(0.30900871753692627+0.95103120803833008j),
(-0.30900952219963074+0.95103377103805542j),
(-0.8089984655380249+0.58777159452438354j),
(-0.99998390674591064+2.3406109050938539e-08j),
(-0.809001624584198-0.58777409791946411j),
(-0.30901208519935608-0.95104163885116577j),
(0.30901262164115906-0.95104306936264038j),
(0.80900543928146362-0.587776780128479j),
(0.99999171495437622-2.6332081404234486e-08j),
(0.80900734663009644+0.58777821063995361j),
(0.30901408195495605+0.95104765892028809j),
(-0.30901429057121277+0.95104855298995972j),
(-0.80900967121124268+0.58777981996536255j),
(-0.99999648332595825+3.2183805842578295e-08j),
(-0.80901080369949341-0.58778077363967896j),
(-0.30901527404785156-0.95105135440826416j),
(0.30901545286178589-0.95105189085006714j),
(0.80901217460632324-0.58778166770935059j),
(0.99999916553497314-3.5109700036173308e-08j),
(0.809012770652771+0.58778214454650879j),
(0.30901595950126648+0.9510534405708313j),
(-0.30901598930358887+0.95105385780334473j),
(-0.80901366472244263+0.58778274059295654j),
(-1.0000008344650269+4.0961388947380328e-08j),
(-0.8090139627456665-0.58778303861618042j),
(-0.30901634693145752-0.95105475187301636j),
(0.30901640653610229-0.95105493068695068j),
(0.80901449918746948-0.5877833366394043j))
sampling_freq = 100
src1 = gr.sig_source_c (sampling_freq, gr.GR_SIN_WAVE,
sampling_freq * 0.10, 100)
dst1 = gr.vector_sink_c ()
head = gr.head (gr.sizeof_gr_complex, int (5*sampling_freq * 0.10))
agc = gr.agc2_cc(1e-2, 1e-3, 1, 1, 1000)
fg.connect (src1, head)
fg.connect (head, agc)
fg.connect (agc, dst1)
if test_output == True:
fg.connect (agc, gr.file_sink(gr.sizeof_gr_complex, "test_agc2_cc.dat"))
fg.run ()
dst_data = dst1.data ()
self.assertComplexTuplesAlmostEqual (expected_result, dst_data, 4)
def __init__(self,
agc_max=100,
agc_decay=0.1,
freq_offset=1000000,
outfile="datafifo",
bandpass_bandwidth=20,
threshold_buffer=0.25,
threshold_center=0.5,
agc_attack=0.1,
bandpass_transition_width=1000000):
gr.top_block.__init__(self, "Collect")
##################################################
# Parameters
##################################################
self.agc_max = agc_max
self.agc_decay = agc_decay
self.freq_offset = freq_offset
self.outfile = outfile
self.bandpass_bandwidth = bandpass_bandwidth
self.threshold_buffer = threshold_buffer
self.threshold_center = threshold_center
self.agc_attack = agc_attack
self.bandpass_transition_width = bandpass_transition_width
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 64000000
##################################################
# Blocks
##################################################
self.uhd_usrp_source_0 = uhd.usrp_source(
device_addr="",
io_type=uhd.io_type.COMPLEX_FLOAT32,
num_channels=1,
)
self.uhd_usrp_source_0.set_samp_rate(samp_rate)
self.uhd_usrp_source_0.set_center_freq(915000000 - freq_offset, 0)
self.uhd_usrp_source_0.set_gain(0, 0)
self.uhd_usrp_source_0.set_antenna("TX/RX", 0)
self.gr_threshold_ff_0 = gr.threshold_ff(
threshold_center - threshold_buffer,
threshold_center + threshold_buffer, 0)
self.gr_map_bb_0 = gr.map_bb(([48, 49]))
self.gr_float_to_char_0 = gr.float_to_char()
self.gr_file_sink_0 = gr.file_sink(gr.sizeof_char * 1, outfile)
self.gr_file_sink_0.set_unbuffered(False)
self.gr_complex_to_mag_0 = gr.complex_to_mag(1)
self.gr_agc2_xx_0_0 = gr.agc2_cc(agc_attack, agc_decay, 1.0, 1.0,
agc_max)
self.band_pass_filter_0 = gr.fir_filter_ccf(
1,
firdes.band_pass(1, samp_rate,
freq_offset - bandpass_bandwidth / 2,
freq_offset + bandpass_bandwidth / 2,
bandpass_transition_width, firdes.WIN_HAMMING,
6.76))
##################################################
# Connections
##################################################
self.connect((self.gr_float_to_char_0, 0), (self.gr_map_bb_0, 0))
self.connect((self.gr_map_bb_0, 0), (self.gr_file_sink_0, 0))
self.connect((self.uhd_usrp_source_0, 0), (self.gr_agc2_xx_0_0, 0))
self.connect((self.gr_agc2_xx_0_0, 0), (self.band_pass_filter_0, 0))
self.connect((self.gr_threshold_ff_0, 0), (self.gr_float_to_char_0, 0))
self.connect((self.gr_complex_to_mag_0, 0),
(self.gr_threshold_ff_0, 0))
self.connect((self.band_pass_filter_0, 0),
(self.gr_complex_to_mag_0, 0))
def __init__(
self,
agc_max=100,
agc_decay=0.1,
freq_offset=1000000,
outfile="datafifo",
bandpass_bandwidth=20,
threshold_buffer=0.25,
threshold_center=0.5,
agc_attack=0.1,
bandpass_transition_width=1000000,
):
gr.top_block.__init__(self, "Collect")
##################################################
# Parameters
##################################################
self.agc_max = agc_max
self.agc_decay = agc_decay
self.freq_offset = freq_offset
self.outfile = outfile
self.bandpass_bandwidth = bandpass_bandwidth
self.threshold_buffer = threshold_buffer
self.threshold_center = threshold_center
self.agc_attack = agc_attack
self.bandpass_transition_width = bandpass_transition_width
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 64000000
##################################################
# Blocks
##################################################
self.uhd_usrp_source_0 = uhd.usrp_source(device_addr="", io_type=uhd.io_type.COMPLEX_FLOAT32, num_channels=1)
self.uhd_usrp_source_0.set_samp_rate(samp_rate)
self.uhd_usrp_source_0.set_center_freq(915000000 - freq_offset, 0)
self.uhd_usrp_source_0.set_gain(0, 0)
self.uhd_usrp_source_0.set_antenna("TX/RX", 0)
self.gr_threshold_ff_0 = gr.threshold_ff(
threshold_center - threshold_buffer, threshold_center + threshold_buffer, 0
)
self.gr_map_bb_0 = gr.map_bb(([48, 49]))
self.gr_float_to_char_0 = gr.float_to_char()
self.gr_file_sink_0 = gr.file_sink(gr.sizeof_char * 1, outfile)
self.gr_file_sink_0.set_unbuffered(False)
self.gr_complex_to_mag_0 = gr.complex_to_mag(1)
self.gr_agc2_xx_0_0 = gr.agc2_cc(agc_attack, agc_decay, 1.0, 1.0, agc_max)
self.band_pass_filter_0 = gr.fir_filter_ccf(
1,
firdes.band_pass(
1,
samp_rate,
freq_offset - bandpass_bandwidth / 2,
freq_offset + bandpass_bandwidth / 2,
bandpass_transition_width,
firdes.WIN_HAMMING,
6.76,
),
)
##################################################
# Connections
##################################################
self.connect((self.gr_float_to_char_0, 0), (self.gr_map_bb_0, 0))
self.connect((self.gr_map_bb_0, 0), (self.gr_file_sink_0, 0))
self.connect((self.uhd_usrp_source_0, 0), (self.gr_agc2_xx_0_0, 0))
self.connect((self.gr_agc2_xx_0_0, 0), (self.band_pass_filter_0, 0))
self.connect((self.gr_threshold_ff_0, 0), (self.gr_float_to_char_0, 0))
self.connect((self.gr_complex_to_mag_0, 0), (self.gr_threshold_ff_0, 0))
self.connect((self.band_pass_filter_0, 0), (self.gr_complex_to_mag_0, 0))
def __init__(self, constellation,
differential=_def_differential,
samples_per_symbol=_def_samples_per_symbol,
pre_diff_code=True,
excess_bw=_def_excess_bw,
freq_bw=_def_freq_bw,
timing_bw=_def_timing_bw,
phase_bw=_def_phase_bw,
verbose=_def_verbose,
log=_def_log):
gr.hier_block2.__init__(self, "generic_demod",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(1, 1, gr.sizeof_char)) # Output signature
self._constellation = constellation
self._samples_per_symbol = samples_per_symbol
self._excess_bw = excess_bw
self._phase_bw = phase_bw
self._freq_bw = freq_bw
self._timing_bw = timing_bw
self._timing_max_dev= _def_timing_max_dev
self._differential = differential
if self._samples_per_symbol < 2:
raise TypeError, ("sbp must be >= 2, is %d" % self._samples_per_symbol)
# Only apply a predifferential coding if the constellation also supports it.
self.pre_diff_code = pre_diff_code and self._constellation.apply_pre_diff_code()
arity = pow(2,self.bits_per_symbol())
nfilts = 32
ntaps = 11 * int(self._samples_per_symbol*nfilts)
# Automatic gain control
self.agc = gr.agc2_cc(0.6e-1, 1e-3, 1, 1, 100)
# Frequency correction
fll_ntaps = 55
self.freq_recov = digital.fll_band_edge_cc(self._samples_per_symbol, self._excess_bw,
fll_ntaps, self._freq_bw)
# symbol timing recovery with RRC data filter
taps = gr.firdes.root_raised_cosine(nfilts, nfilts*self._samples_per_symbol,
1.0, self._excess_bw, ntaps)
self.time_recov = digital.pfb_clock_sync_ccf(self._samples_per_symbol,
self._timing_bw, taps,
nfilts, nfilts//2, self._timing_max_dev)
fmin = -0.25
fmax = 0.25
self.receiver = digital.constellation_receiver_cb(
self._constellation.base(), self._phase_bw,
fmin, fmax)
# Do differential decoding based on phase change of symbols
if differential:
self.diffdec = digital.diff_decoder_bb(arity)
if self.pre_diff_code:
self.symbol_mapper = digital.map_bb(
mod_codes.invert_code(self._constellation.pre_diff_code()))
# unpack the k bit vector into a stream of bits
self.unpack = gr.unpack_k_bits_bb(self.bits_per_symbol())
if verbose:
self._print_verbage()
if log:
self._setup_logging()
# Connect and Initialize base class
blocks = [self, self.agc, self.freq_recov,
self.time_recov, self.receiver]
if differential:
blocks.append(self.diffdec)
if self.pre_diff_code:
blocks.append(self.symbol_mapper)
blocks += [self.unpack, self]
self.connect(*blocks)
def __init__(self):
gr.top_block.__init__(self)
amplitude = 30000
filt_out = gr.file_sink(gr.sizeof_gr_complex, "./filt.out")
filt2_out = gr.file_sink(gr.sizeof_gr_complex, "./filt2.out")
ffilt_out = gr.file_sink(gr.sizeof_float, "./ffilt.out")
ffilt2_out = gr.file_sink(gr.sizeof_float, "./ffilt2.out")
interp_rate = 128
dec_rate = 8
sw_dec = 4
num_taps = int(64000 / ( (dec_rate * 4) * 256 )) #Filter matched to 1/4 of the 256 kHz tag cycle
taps = [complex(1,1)] * num_taps
matched_filt = gr.fir_filter_ccc(sw_dec, taps);
agc = gr.agc2_cc(0.3, 1e-3, 1, 1, 100)
to_mag = gr.complex_to_mag()
center = rfid.center_ff(4)
omega = 2
mu = 0.25
gain_mu = 0.25
gain_omega = .25 * gain_mu * gain_mu
omega_relative_limit = .05
mm = gr.clock_recovery_mm_ff(omega, gain_omega, mu, gain_mu, omega_relative_limit)
self.reader = rfid.reader_f(int(128e6/interp_rate));
tag_decoder = rfid.tag_decoder_f()
command_gate = rfid.command_gate_cc(12, 60, 64000000 / dec_rate / sw_dec)
to_complex = gr.float_to_complex()
amp = gr.multiply_const_ff(amplitude)
f_sink = gr.file_sink(gr.sizeof_gr_complex, 'f_sink.out');
f_sink2 = gr.file_sink(gr.sizeof_gr_complex, 'f_sink2.out');
#TX
freq = 915e6
rx_gain = 20
tx = usrp.sink_c(fusb_block_size = 1024, fusb_nblocks=8)
tx.set_interp_rate(interp_rate)
tx_subdev = (0,0)
tx.set_mux(usrp.determine_tx_mux_value(tx, tx_subdev))
subdev = usrp.selected_subdev(tx, tx_subdev)
subdev.set_enable(True)
subdev.set_gain(subdev.gain_range()[2])
t = tx.tune(subdev.which(), subdev, freq)
if not t:
print "Couldn't set tx freq"
#End TX
#RX
rx = usrp.source_c(0, dec_rate, fusb_block_size = 512 * 4, fusb_nblocks = 16)
rx_subdev_spec = (1,0)
rx.set_mux(usrp.determine_rx_mux_value(rx, rx_subdev_spec))
rx_subdev = usrp.selected_subdev(rx, rx_subdev_spec)
rx_subdev.set_gain(rx_gain)
rx_subdev.set_auto_tr(False)
rx_subdev.set_enable(True)
r = usrp.tune(rx, 0, rx_subdev, freq)
self.rx = rx
if not r:
print "Couldn't set rx freq"
#End RX
command_gate.set_ctrl_out(self.reader.ctrl_q())
tag_decoder.set_ctrl_out(self.reader.ctrl_q())
agc2 = gr.agc2_ff(0.3, 1e-3, 1, 1, 100)
#########Build Graph
self.connect(rx, matched_filt)
self.connect(matched_filt, command_gate)
self.connect(command_gate, agc)
self.connect(agc, to_mag)
self.connect(to_mag, center, agc2, mm, tag_decoder)
self.connect(tag_decoder, self.reader, amp, to_complex, tx);
#################
self.connect(matched_filt, filt_out)
def __init__(self,
samples_per_symbol=_def_samples_per_symbol,
excess_bw=_def_excess_bw,
freq_alpha=_def_freq_alpha,
phase_alpha=_def_phase_alpha,
timing_alpha=_def_timing_alpha,
timing_max_dev=_def_timing_max_dev,
gray_code=_def_gray_code,
verbose=_def_verbose,
log=_def_log,
sync_out=False):
"""
Hierarchical block for RRC-filtered DQPSK demodulation
The input is the complex modulated signal at baseband.
The output is a stream of bits packed 1 bit per byte (LSB)
@param samples_per_symbol: samples per symbol >= 2
@type samples_per_symbol: float
@param excess_bw: Root-raised cosine filter excess bandwidth
@type excess_bw: float
@param freq_alpha: loop filter gain for frequency recovery
@type freq_alpha: float
@param phase_alpha: loop filter gain
@type phase_alphas: float
@param timing_alpha: timing loop alpha gain
@type timing_alpha: float
@param timing_max: timing loop maximum rate deviations
@type timing_max: float
@param gray_code: Tell modulator to Gray code the bits
@type gray_code: bool
@param verbose: Print information about modulator?
@type verbose: bool
@param log: Print modualtion data to files?
@type log: bool
@param sync_out: Output a sync signal on :1?
@type sync_out: bool
"""
if sync_out:
io_sig_out = gr.io_signaturev(
2, 2, (gr.sizeof_char, gr.sizeof_gr_complex))
else:
io_sig_out = gr.io_signature(1, 1, gr.sizeof_char)
gr.hier_block2.__init__(
self,
"dqpsk2_demod",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
io_sig_out) # Output signature
self._samples_per_symbol = samples_per_symbol
self._excess_bw = excess_bw
self._freq_alpha = freq_alpha
self._freq_beta = 0.25 * self._freq_alpha**2
self._phase_alpha = phase_alpha
self._timing_alpha = timing_alpha
self._timing_beta = _def_timing_beta
self._timing_max_dev = timing_max_dev
self._gray_code = gray_code
if samples_per_symbol < 2:
raise TypeError, "sbp must be >= 2, is %d" % samples_per_symbol
arity = pow(2, self.bits_per_symbol())
# Automatic gain control
self.agc = gr.agc2_cc(0.6e-1, 1e-3, 1, 1, 100)
#self.agc = gr.feedforward_agc_cc(16, 2.0)
# Frequency correction
self.freq_recov = gr.fll_band_edge_cc(
self._samples_per_symbol, self._excess_bw,
11 * int(self._samples_per_symbol), self._freq_alpha,
self._freq_beta)
# symbol timing recovery with RRC data filter
nfilts = 32
ntaps = 11 * int(samples_per_symbol * nfilts)
taps = gr.firdes.root_raised_cosine(
nfilts, nfilts, 1.0 / float(self._samples_per_symbol),
self._excess_bw, ntaps)
self.time_recov = gr.pfb_clock_sync_ccf(self._samples_per_symbol,
self._timing_alpha, taps,
nfilts, nfilts / 2,
self._timing_max_dev)
self.time_recov.set_beta(self._timing_beta)
# Perform phase / fine frequency correction
self._phase_beta = 0.25 * self._phase_alpha * self._phase_alpha
# Allow a frequency swing of +/- half of the sample rate
fmin = -0.5
fmax = 0.5
self.phase_recov = gr.costas_loop_cc(self._phase_alpha,
self._phase_beta, fmax, fmin,
arity)
# Perform Differential decoding on the constellation
self.diffdec = gr.diff_phasor_cc()
# find closest constellation point
rot = 1
rotated_const = map(lambda pt: pt * rot, psk.constellation[arity])
self.slicer = gr.constellation_decoder_cb(rotated_const, range(arity))
if self._gray_code:
self.symbol_mapper = gr.map_bb(psk.gray_to_binary[arity])
else:
self.symbol_mapper = gr.map_bb(psk.ungray_to_binary[arity])
# unpack the k bit vector into a stream of bits
self.unpack = gr.unpack_k_bits_bb(self.bits_per_symbol())
if verbose:
self._print_verbage()
if log:
self._setup_logging()
# Connect
self.connect(self, self.agc, self.freq_recov, self.time_recov,
self.phase_recov, self.diffdec, self.slicer,
self.symbol_mapper, self.unpack, self)
if sync_out: self.connect(self.time_recov, (self, 1))
def __init__(self,
samples_per_symbol=_def_samples_per_symbol,
excess_bw=_def_excess_bw,
costas_alpha=_def_costas_alpha,
gain_mu=_def_gain_mu,
mu=_def_mu,
omega_relative_limit=_def_omega_relative_limit,
gray_code=_def_gray_code,
verbose=_def_verbose,
log=_def_log):
"""
Hierarchical block for RRC-filtered differential BPSK demodulation
The input is the complex modulated signal at baseband.
The output is a stream of bits packed 1 bit per byte (LSB)
@param samples_per_symbol: samples per symbol >= 2
@type samples_per_symbol: float
@param excess_bw: Root-raised cosine filter excess bandwidth
@type excess_bw: float
@param costas_alpha: loop filter gain
@type costas_alphas: float
@param gain_mu: for M&M block
@type gain_mu: float
@param mu: for M&M block
@type mu: float
@param omega_relative_limit: for M&M block
@type omega_relative_limit: float
@param gray_code: Tell modulator to Gray code the bits
@type gray_code: bool
@param verbose: Print information about modulator?
@type verbose: bool
@param debug: Print modualtion data to files?
@type debug: bool
"""
gr.hier_block2.__init__(self, "dbpsk_demod",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(1, 1, gr.sizeof_char)) # Output signature
self._samples_per_symbol = samples_per_symbol
self._excess_bw = excess_bw
self._costas_alpha = costas_alpha
self._mm_gain_mu = gain_mu
self._mm_mu = mu
self._mm_omega_relative_limit = omega_relative_limit
self._gray_code = gray_code
if samples_per_symbol < 2:
raise TypeError, "samples_per_symbol must be >= 2, is %r" % (samples_per_symbol,)
arity = pow(2,self.bits_per_symbol())
# Automatic gain control
#scale = (1.0/16384.0)
#self.pre_scaler = gr.multiply_const_cc(scale) # scale the signal from full-range to +-1
self.agc = gr.agc2_cc(0.6e-1, 1e-3, 1, 1, 100)
#self.agc = gr.feedforward_agc_cc(16, 2.0)
# RRC data filter
ntaps = 11 * samples_per_symbol
self.rrc_taps = gr.firdes.root_raised_cosine(
1.0, # gain
self._samples_per_symbol, # sampling rate
1.0, # symbol rate
self._excess_bw, # excess bandwidth (roll-off factor)
ntaps)
self.rrc_filter=gr.interp_fir_filter_ccf(1, self.rrc_taps)
# symbol clock recovery
if not self._mm_gain_mu:
self._mm_gain_mu = 0.1
self._mm_omega = self._samples_per_symbol
self._mm_gain_omega = .25 * self._mm_gain_mu * self._mm_gain_mu
self._costas_beta = 0.25 * self._costas_alpha * self._costas_alpha
fmin = -0.25
fmax = 0.25
self.receiver=gr.mpsk_receiver_cc(arity, 0,
self._costas_alpha, self._costas_beta,
fmin, fmax,
self._mm_mu, self._mm_gain_mu,
self._mm_omega, self._mm_gain_omega,
self._mm_omega_relative_limit)
# Do differential decoding based on phase change of symbols
self.diffdec = gr.diff_phasor_cc()
# find closest constellation point
rot = 1
rotated_const = map(lambda pt: pt * rot, psk.constellation[arity])
self.slicer = gr.constellation_decoder_cb(rotated_const, range(arity))
if self._gray_code:
self.symbol_mapper = gr.map_bb(psk.gray_to_binary[arity])
else:
self.symbol_mapper = gr.map_bb(psk.ungray_to_binary[arity])
# unpack the k bit vector into a stream of bits
self.unpack = gr.unpack_k_bits_bb(self.bits_per_symbol())
if verbose:
self._print_verbage()
if log:
self._setup_logging()
# Connect and Initialize base class
self.connect(self, self.agc, self.rrc_filter, self.receiver,
self.diffdec, self.slicer, self.symbol_mapper, self.unpack, self)
def __init__(self, antenna="TX/RX", rx_gain=30, vor_samp_rate=250e3, com_freq_1=135.275e6, gain=21, vor_freq_1=115e6):
grc_wxgui.top_block_gui.__init__(self, title="Simple Trx")
##################################################
# Parameters
##################################################
self.antenna = antenna
self.rx_gain = rx_gain
self.vor_samp_rate = vor_samp_rate
self.com_freq_1 = com_freq_1
self.gain = gain
self.vor_freq_1 = vor_freq_1
##################################################
# Variables
##################################################
self.obs_decimation = obs_decimation = 25
self.ils_decimation = ils_decimation = 50
self.am_sample_rate = am_sample_rate = 12.5e3
self.vor_volume_slider = vor_volume_slider = 5
self.vor_ident = vor_ident = False
self.vor_freq_entry_1 = vor_freq_entry_1 = vor_freq_1
self.vor_center_freq_0 = vor_center_freq_0 = (117.95e6-108.00e6)/2+117.95e6
self.system_center_freq = system_center_freq = 133.9e6
self.squelch_slider = squelch_slider = -85
self.samp_rate = samp_rate = 250e3
self.rxgain = rxgain = 15
self.phase_correction = phase_correction = 5
self.obs_sample_rate = obs_sample_rate = am_sample_rate/obs_decimation
self.ils_sample_rate = ils_sample_rate = am_sample_rate/ils_decimation
self.gain_slider = gain_slider = gain
self.correction_gain = correction_gain = 0.8
self.com_volume_slider = com_volume_slider = 1
self.com_freq_entry_1 = com_freq_entry_1 = com_freq_1
self.com_enable = com_enable = True
self.audio_select = audio_select = 0
self.audio_sample_rate = audio_sample_rate = 48e3
self.am_decimation = am_decimation = 1
##################################################
# Blocks
##################################################
_vor_volume_slider_sizer = wx.BoxSizer(wx.VERTICAL)
self._vor_volume_slider_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_vor_volume_slider_sizer,
value=self.vor_volume_slider,
callback=self.set_vor_volume_slider,
label='vor_volume_slider',
converter=forms.float_converter(),
proportion=0,
)
self._vor_volume_slider_slider = forms.slider(
parent=self.GetWin(),
sizer=_vor_volume_slider_sizer,
value=self.vor_volume_slider,
callback=self.set_vor_volume_slider,
minimum=0,
maximum=10,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_vor_volume_slider_sizer, 1, 4, 1, 1)
self._vor_ident_check_box = forms.check_box(
parent=self.GetWin(),
value=self.vor_ident,
callback=self.set_vor_ident,
label='vor_ident',
true=1,
false=0,
)
self.GridAdd(self._vor_ident_check_box, 0, 3, 1, 1)
self._vor_freq_entry_1_text_box = forms.text_box(
parent=self.GetWin(),
value=self.vor_freq_entry_1,
callback=self.set_vor_freq_entry_1,
label='vor_freq_entry_1',
converter=forms.float_converter(),
)
self.GridAdd(self._vor_freq_entry_1_text_box, 0, 1, 1, 1)
self.notebook_0 = self.notebook_0 = wx.Notebook(self.GetWin(), style=wx.NB_TOP)
self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0), "RF Analyzer")
self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0), "Channel FFT")
self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0), "Demod Audio FFT")
self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0), "Ref and Phase Scope")
self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0), "Manipulated Ref and Phase")
self.Add(self.notebook_0)
_com_volume_slider_sizer = wx.BoxSizer(wx.VERTICAL)
self._com_volume_slider_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_com_volume_slider_sizer,
value=self.com_volume_slider,
callback=self.set_com_volume_slider,
label='com_volume_slider',
converter=forms.float_converter(),
proportion=0,
)
self._com_volume_slider_slider = forms.slider(
parent=self.GetWin(),
sizer=_com_volume_slider_sizer,
value=self.com_volume_slider,
callback=self.set_com_volume_slider,
minimum=0,
maximum=10,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_com_volume_slider_sizer, 1, 5, 1, 1)
self._com_freq_entry_1_text_box = forms.text_box(
parent=self.GetWin(),
value=self.com_freq_entry_1,
callback=self.set_com_freq_entry_1,
label='com_freq_entry_1',
converter=forms.float_converter(),
)
self.GridAdd(self._com_freq_entry_1_text_box, 0, 0, 1, 1)
self._com_enable_check_box = forms.check_box(
parent=self.GetWin(),
value=self.com_enable,
callback=self.set_com_enable,
label='com_enable',
true=1,
false=0,
)
self.GridAdd(self._com_enable_check_box, 2, 3, 1, 1)
self.wxgui_scopesink2_0 = scopesink2.scope_sink_f(
self.notebook_0.GetPage(3).GetWin(),
title="Scope Plot",
sample_rate=12.5e3,
v_scale=0,
v_offset=0,
t_scale=0,
ac_couple=False,
xy_mode=False,
num_inputs=2,
trig_mode=gr.gr_TRIG_MODE_AUTO,
y_axis_label="Counts",
)
self.notebook_0.GetPage(3).Add(self.wxgui_scopesink2_0.win)
self.wxgui_numbersink2_0 = numbersink2.number_sink_f(
self.GetWin(),
unit="Units",
minval=-200,
maxval=200,
factor=1.0,
decimal_places=10,
ref_level=0,
sample_rate=25e3/2000,
number_rate=15,
average=True,
avg_alpha=0.02,
label="Number Plot",
peak_hold=False,
show_gauge=True,
)
self.Add(self.wxgui_numbersink2_0.win)
self.wxgui_fftsink2_0_1 = fftsink2.fft_sink_c(
self.notebook_0.GetPage(0).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=25e3,
fft_size=1024,
fft_rate=5,
average=False,
avg_alpha=None,
title="FFT Plot",
peak_hold=False,
)
self.notebook_0.GetPage(0).Add(self.wxgui_fftsink2_0_1.win)
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.notebook_0.GetPage(1).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=12.5e3,
fft_size=1024,
fft_rate=5,
average=False,
avg_alpha=None,
title="FFT Plot",
peak_hold=False,
)
self.notebook_0.GetPage(1).Add(self.wxgui_fftsink2_0.win)
self.uhd_usrp_source_0 = uhd.usrp_source(
device_addr="",
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(2),
),
)
self.uhd_usrp_source_0.set_clock_source("internal", 0)
self.uhd_usrp_source_0.set_subdev_spec("A:0 A:0", 0)
self.uhd_usrp_source_0.set_samp_rate(vor_samp_rate)
self.uhd_usrp_source_0.set_center_freq(uhd.tune_request(com_freq_entry_1, rf_freq=system_center_freq, rf_freq_policy=uhd.tune_request.POLICY_MANUAL), 0)
self.uhd_usrp_source_0.set_gain(rx_gain, 0)
self.uhd_usrp_source_0.set_antenna("RX2", 0)
self.uhd_usrp_source_0.set_center_freq(uhd.tune_request(vor_freq_entry_1, rf_freq=system_center_freq, rf_freq_policy=uhd.tune_request.POLICY_MANUAL), 1)
self.uhd_usrp_source_0.set_gain(rx_gain, 1)
self.uhd_usrp_source_0.set_antenna("RX2", 1)
self.uhd_usrp_sink_0 = uhd.usrp_sink(
device_addr="",
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.uhd_usrp_sink_0.set_samp_rate(250e3)
self.uhd_usrp_sink_0.set_center_freq(com_freq_entry_1, 0)
self.uhd_usrp_sink_0.set_gain(25, 0)
self.uhd_usrp_sink_0.set_antenna("TX/RX", 0)
_squelch_slider_sizer = wx.BoxSizer(wx.VERTICAL)
self._squelch_slider_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_squelch_slider_sizer,
value=self.squelch_slider,
callback=self.set_squelch_slider,
label='squelch_slider',
converter=forms.float_converter(),
proportion=0,
)
self._squelch_slider_slider = forms.slider(
parent=self.GetWin(),
sizer=_squelch_slider_sizer,
value=self.squelch_slider,
callback=self.set_squelch_slider,
minimum=-100,
maximum=0,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_squelch_slider_sizer, 1, 0, 1, 1)
self.squelch = gr.pwr_squelch_cc(squelch_slider, 0.01, 20, False)
self.openavionics_joystick_interface_0 = openavionics.joystick_interface()
self.openavionics_audio_ptt_0 = openavionics.audio_ptt()
self.low_pass_filter_3_0 = filter.fir_filter_fff(5, firdes.low_pass(
1, 25e3, 200, 50, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_3 = filter.fir_filter_fff(5, firdes.low_pass(
1, 25e3, 200, 50, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_2 = filter.fir_filter_ccf(1, firdes.low_pass(
1, 25e3, 3e3, 500, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_1 = filter.interp_fir_filter_fff(1, firdes.low_pass(
1, 12.5e3, 3e3, 1e3, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0_0 = filter.fir_filter_ccf(int(250e3/25e3), firdes.low_pass(
1, vor_samp_rate, 11e3, 1e3, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0 = filter.fir_filter_ccf(int(250e3/12.5e3), firdes.low_pass(
1, vor_samp_rate, 10e3, 1e3, firdes.WIN_HAMMING, 6.76))
self.gr_sig_source_x_0 = gr.sig_source_c(25e3, gr.GR_COS_WAVE, 9960, 1, 0)
self.gr_quadrature_demod_cf_0 = gr.quadrature_demod_cf(1)
self.gr_pwr_squelch_xx_0 = gr.pwr_squelch_ff(-50, 0.5, 1, False)
self.gr_null_sink_0_0 = gr.null_sink(gr.sizeof_gr_complex*1)
self.gr_multiply_xx_0_0_1 = gr.multiply_vff(1)
self.gr_multiply_xx_0_0_0_0 = gr.multiply_vcc(1)
self.gr_multiply_xx_0 = gr.multiply_vcc(1)
self.gr_float_to_complex_0_0_0 = gr.float_to_complex(1)
self.gr_float_to_complex_0 = gr.float_to_complex(1)
self.gr_agc2_xx_0_0 = gr.agc2_cc(1, 1, 0.75, 1.0, 0.0)
self.gr_agc2_xx_0 = gr.agc2_cc(1, 1, 0.75, 1.0, 0.0)
self.gr_add_xx_0_0_0 = gr.add_vff(1)
_gain_slider_sizer = wx.BoxSizer(wx.VERTICAL)
self._gain_slider_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_gain_slider_sizer,
value=self.gain_slider,
callback=self.set_gain_slider,
label='gain_slider',
converter=forms.float_converter(),
proportion=0,
)
self._gain_slider_slider = forms.slider(
parent=self.GetWin(),
sizer=_gain_slider_sizer,
value=self.gain_slider,
callback=self.set_gain_slider,
minimum=0,
maximum=30,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_gain_slider_sizer, 1, 1, 1, 1)
self.fft_tone_to_angle_0 = fft_tone_to_angle(
fft_bin=12,
fft_size=2000,
)
self.const_source_x_0_1 = gr.sig_source_f(0, gr.GR_CONST_WAVE, 0, 0, 0.450)
self.const_source_x_0_0_1 = gr.sig_source_f(0, gr.GR_CONST_WAVE, 0, 0, 0.550)
self.const_source_x_0_0_0_0 = gr.sig_source_c(0, gr.GR_CONST_WAVE, 0, 0, 0.450)
self.blocks_null_sink_1 = blocks.null_sink(gr.sizeof_float*1)
self.blocks_null_sink_0 = blocks.null_sink(gr.sizeof_float*1)
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vff((180.0/3.1415, ))
self.blocks_add_xx_0 = blocks.add_vff(1)
self.blks2_rational_resampler_xxx_2_0 = blks2.rational_resampler_fff(
interpolation=250,
decimation=48,
taps=None,
fractional_bw=None,
)
self.blks2_rational_resampler_xxx_1 = blks2.rational_resampler_fff(
interpolation=480,
decimation=125,
taps=None,
fractional_bw=None,
)
self.blks2_am_demod_cf_0_0 = blks2.am_demod_cf(
channel_rate=25e3,
audio_decim=am_decimation,
audio_pass=11.5e3,
audio_stop=12.250e3,
)
self.blks2_am_demod_cf_0 = blks2.am_demod_cf(
channel_rate=am_sample_rate,
audio_decim=am_decimation,
audio_pass=3e3,
audio_stop=4e3,
)
self.band_pass_filter_0 = gr.fir_filter_fff(2, firdes.band_pass(
1, 25000, 980, 1150, 50, firdes.WIN_HAMMING, 6.76))
self.audio_sink_0 = audio.sink(int(audio_sample_rate), "", True)
self._audio_select_chooser = forms.drop_down(
parent=self.GetWin(),
value=self.audio_select,
callback=self.set_audio_select,
label='audio_select',
choices=[0, 1],
labels=['AM Voice','VOR Subcarrier'],
)
self.GridAdd(self._audio_select_chooser, 0, 2, 1, 1)
self.analog_sig_source_x_0_0 = analog.sig_source_f(48000, analog.GR_COS_WAVE, 1000, 1, 0)
self.adsf_0 = blocks.multiply_const_vff((com_enable*com_volume_slider, ))
self.adsf = blocks.multiply_const_vff((vor_ident*vor_volume_slider, ))
##################################################
# Connections
##################################################
self.connect((self.gr_float_to_complex_0, 0), (self.gr_multiply_xx_0, 0))
self.connect((self.blks2_rational_resampler_xxx_1, 0), (self.audio_sink_0, 0))
self.connect((self.blks2_am_demod_cf_0, 0), (self.low_pass_filter_1, 0))
self.connect((self.uhd_usrp_source_0, 0), (self.low_pass_filter_0, 0))
self.connect((self.uhd_usrp_source_0, 1), (self.gr_null_sink_0_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.squelch, 0))
self.connect((self.squelch, 0), (self.gr_agc2_xx_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.wxgui_fftsink2_0, 0))
self.connect((self.gr_agc2_xx_0, 0), (self.blks2_am_demod_cf_0, 0))
self.connect((self.low_pass_filter_0_0, 0), (self.wxgui_fftsink2_0_1, 0))
self.connect((self.gr_agc2_xx_0_0, 0), (self.blks2_am_demod_cf_0_0, 0))
self.connect((self.uhd_usrp_source_0, 1), (self.low_pass_filter_0_0, 0))
self.connect((self.blks2_am_demod_cf_0_0, 0), (self.gr_float_to_complex_0, 0))
self.connect((self.fft_tone_to_angle_0, 0), (self.blocks_multiply_const_vxx_0, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0), (self.wxgui_numbersink2_0, 0))
self.connect((self.fft_tone_to_angle_0, 1), (self.blocks_null_sink_0, 0))
self.connect((self.fft_tone_to_angle_0, 2), (self.blocks_null_sink_1, 0))
self.connect((self.low_pass_filter_0_0, 0), (self.gr_agc2_xx_0_0, 0))
self.connect((self.gr_quadrature_demod_cf_0, 0), (self.low_pass_filter_3, 0))
self.connect((self.low_pass_filter_3, 0), (self.fft_tone_to_angle_0, 0))
self.connect((self.low_pass_filter_3_0, 0), (self.fft_tone_to_angle_0, 1))
self.connect((self.blks2_am_demod_cf_0_0, 0), (self.low_pass_filter_3_0, 0))
self.connect((self.blks2_am_demod_cf_0_0, 0), (self.gr_float_to_complex_0, 1))
self.connect((self.gr_multiply_xx_0, 0), (self.low_pass_filter_2, 0))
self.connect((self.gr_sig_source_x_0, 0), (self.gr_multiply_xx_0, 1))
self.connect((self.low_pass_filter_2, 0), (self.gr_quadrature_demod_cf_0, 0))
self.connect((self.blks2_am_demod_cf_0_0, 0), (self.band_pass_filter_0, 0))
self.connect((self.adsf, 0), (self.blocks_add_xx_0, 1))
self.connect((self.blocks_add_xx_0, 0), (self.blks2_rational_resampler_xxx_1, 0))
self.connect((self.adsf, 0), (self.wxgui_scopesink2_0, 1))
self.connect((self.low_pass_filter_1, 0), (self.adsf_0, 0))
self.connect((self.adsf_0, 0), (self.blocks_add_xx_0, 0))
self.connect((self.adsf_0, 0), (self.wxgui_scopesink2_0, 0))
self.connect((self.band_pass_filter_0, 0), (self.gr_pwr_squelch_xx_0, 0))
self.connect((self.gr_pwr_squelch_xx_0, 0), (self.adsf, 0))
self.connect((self.const_source_x_0_0_0_0, 0), (self.gr_multiply_xx_0_0_0_0, 1))
self.connect((self.gr_float_to_complex_0_0_0, 0), (self.gr_multiply_xx_0_0_0_0, 0))
self.connect((self.gr_add_xx_0_0_0, 0), (self.gr_float_to_complex_0_0_0, 1))
self.connect((self.gr_add_xx_0_0_0, 0), (self.gr_float_to_complex_0_0_0, 0))
self.connect((self.const_source_x_0_0_1, 0), (self.gr_add_xx_0_0_0, 1))
self.connect((self.gr_multiply_xx_0_0_1, 0), (self.gr_add_xx_0_0_0, 0))
self.connect((self.const_source_x_0_1, 0), (self.gr_multiply_xx_0_0_1, 1))
self.connect((self.gr_multiply_xx_0_0_0_0, 0), (self.uhd_usrp_sink_0, 0))
self.connect((self.blks2_rational_resampler_xxx_2_0, 0), (self.openavionics_audio_ptt_0, 0))
self.connect((self.analog_sig_source_x_0_0, 0), (self.blks2_rational_resampler_xxx_2_0, 0))
self.connect((self.openavionics_audio_ptt_0, 0), (self.gr_multiply_xx_0_0_1, 0))
##################################################
# Asynch Message Connections
##################################################
self.msg_connect(self.openavionics_joystick_interface_0, "out", self.openavionics_audio_ptt_0, "in2")
