def __init__(self,
parent,
title='',
sample_rate=1,
size=default_scopesink_size,
frame_decim=default_frame_decim,
v_scale=default_v_scale,
t_scale=None,
num_inputs=1,
xy_mode=False,
**kwargs):
gr.hier_block2.__init__(
self, "scope_sink_c",
gr.io_signature(num_inputs, num_inputs, gr.sizeof_gr_complex),
gr.io_signature(0, 0, 0))
msgq = gr.msg_queue(2) # message queue that holds at most 2 messages
self.guts = gr.oscope_sink_f(sample_rate, msgq)
for i in range(num_inputs):
c2f = gr.complex_to_float()
self.connect((self, i), c2f)
self.connect((c2f, 0), (self.guts, 2 * i + 0))
self.connect((c2f, 1), (self.guts, 2 * i + 1))
self.win = scope_window(
win_info(msgq, sample_rate, frame_decim, v_scale, t_scale,
self.guts, title), parent)
self.win.info.xy = xy_mode
def __init__(self):
gr.top_block.__init__(self, "am modulator")
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 44100
self.freq = freq = 8000
##################################################
# Blocks
##################################################
self.gr_complex_to_float_0 = gr.complex_to_float(1)
self.gr_float_to_complex_0 = gr.float_to_complex()
self.gr_multiply_vxx_0 = gr.multiply_vcc(1)
self.gr_sig_source_x_0 = gr.sig_source_c(samp_rate, gr.GR_COS_WAVE, freq, 1, 0)
self.gr_wavfile_sink_0 = gr.wavfile_sink("8k.wav", 2, samp_rate, 16)
self.gr_wavfile_source_0 = gr.wavfile_source("orig.wav", False)
##################################################
# Connections
##################################################
self.connect((self.gr_sig_source_x_0, 0), (self.gr_multiply_vxx_0, 0))
self.connect((self.gr_wavfile_source_0, 0), (self.gr_float_to_complex_0, 0))
self.connect((self.gr_float_to_complex_0, 0), (self.gr_multiply_vxx_0, 1))
self.connect((self.gr_wavfile_source_0, 1), (self.gr_float_to_complex_0, 1))
self.connect((self.gr_multiply_vxx_0, 0), (self.gr_complex_to_float_0, 0))
self.connect((self.gr_complex_to_float_0, 0), (self.gr_wavfile_sink_0, 0))
self.connect((self.gr_complex_to_float_0, 1), (self.gr_wavfile_sink_0, 1))
def __init__(self, infile="data", samp_rate=1000000, outfile="data.wav", amp=70): gr.top_block.__init__(self, "Analyze") ################################################## # Parameters ################################################## self.infile = infile self.samp_rate = samp_rate self.outfile = outfile self.amp = amp ################################################## # Blocks ################################################## self.gr_wavfile_sink_0 = gr.wavfile_sink(outfile, 3, samp_rate, 16) self.gr_multiply_const_vxx_0 = gr.multiply_const_vcc((amp, )) self.gr_file_source_0 = gr.file_source(gr.sizeof_gr_complex*1, infile, False) self.gr_complex_to_mag_0 = gr.complex_to_mag(1) self.gr_complex_to_float_0 = gr.complex_to_float(1) ################################################## # Connections ################################################## self.connect((self.gr_file_source_0, 0), (self.gr_multiply_const_vxx_0, 0)) self.connect((self.gr_multiply_const_vxx_0, 0), (self.gr_complex_to_float_0, 0)) self.connect((self.gr_multiply_const_vxx_0, 0), (self.gr_complex_to_mag_0, 0)) self.connect((self.gr_complex_to_mag_0, 0), (self.gr_wavfile_sink_0, 2)) self.connect((self.gr_complex_to_float_0, 1), (self.gr_wavfile_sink_0, 1)) self.connect((self.gr_complex_to_float_0, 0), (self.gr_wavfile_sink_0, 0))
def add_to_scope(self,source_c,show_q):
c2f= gr.complex_to_float ()
self.connect(source_c, c2f)
self.connect((c2f,0), (self.scope,self.sink_count))
self.sink_count=self.sink_count+1
if show_q:
self.connect((c2f,1), (self.scope,self.sink_count))
self.sink_count=self.sink_count+1
def add_to_scope(self,source_c,show_q):
c2f= gr.complex_to_float ()
self.connect(source_c, c2f)
self.connect((c2f,0), (self.scope,self.sink_count))
self.sink_count=self.sink_count+1
if show_q:
self.connect((c2f,1), (self.scope,self.sink_count))
self.sink_count=self.sink_count+1
def test_002_square2_ff (self):
#src_data = (7, -3, 4, -5.5, 2, 3, 5)
#src_coeff = (1, 1, 2, 2, 3)
src_data0 = (0.01+0.11j, 0.02+0.22j, 0.03+0.33j, 0.04+0.44j, 0.05+0.55j, 0.06+0.66j, 0.07+0.77j, 0.08+0.88j, 0.09+0.99j)
#src_data1 = (0.11, 0.22, 0.33, 0.44, 0.55, 0.66, 0.77, 0.88, 0.99)
src_coeff = (0.101, 0.102, 0.103, 0.104, 0.105)
scale = 1000
#expected_result = (9, 16, 30.25, 4, 9)
#expected_result = (49, 9, 16, 30.20000076, 4, 9, 25)
expected_result = (245, 320, 395, 470, 445, 400, 334, 246, 135)
src0 = gr.vector_source_c (src_data0)
#src1 = gr.vector_source_f (src_data1)
#sqr = dsp.fir_ccf (src_coeff, scale, 2)
ftoc = gr.float_to_complex ()
ctof = gr.complex_to_float ()
gccf = gr.interp_fir_filter_ccf (2, src_coeff)
dst0 = gr.vector_sink_c ()
#dst1 = gr.vector_sink_f ()
mpoints = 4
taps = gr.firdes.low_pass(1,
1,
1.0/mpoints * 0.4,
1.0/mpoints * 0.1,
gr.firdes.WIN_HANN)
#print "The length of FILTER is"
#print len(taps)
#print "The length of FILTER is %d." %len(taps)
#print taps
#howto.set_taps()
#self.tb.connect (src0, (sqr, 0))
#self.tb.connect (src1, (sqr, 1))
#self.tb.connect ((sqr, 0), dst0)
#self.tb.connect ((sqr, 1), dst1)
#self.tb.connect (src0, (ftoc, 0))
#self.tb.connect (src1, (ftoc, 1))
#self.tb.connect (ftoc, gccf)
#self.tb.connect (gccf, ctof)
#self.tb.connect ((ctof, 0), dst0)
#self.tb.connect ((ctof, 1), dst1)
self.tb.connect (src0, gccf)
self.tb.connect (gccf, dst0)
#self.tb.connect (src0, sqr)
#self.tb.connect (sqr, dst0)
self.tb.run ()
result_data0 = dst0.data ()
print result_data0
def __init__(self, frame, panel, vbox, argv):
stdgui2.std_top_block.__init__(self, frame, panel, vbox, argv)
fft_size = 256
# build our flow graph
input_rate = 2048.0e3
# Generate some noise
noise = gr.noise_source_c(gr.GR_UNIFORM, 1.0 / 10)
# Generate a complex sinusoid
# src1 = gr.sig_source_c (input_rate, gr.GR_SIN_WAVE, 2e3, 1)
src1 = gr.sig_source_c(input_rate, gr.GR_CONST_WAVE, 57.50e3, 1)
# We add these throttle blocks so that this demo doesn't
# suck down all the CPU available. Normally you wouldn't use these.
thr1 = gr.throttle(gr.sizeof_gr_complex, input_rate)
sink1 = fft_sink_c(
panel,
title="Complex Data",
fft_size=fft_size,
sample_rate=input_rate,
baseband_freq=100e3,
ref_level=0,
y_per_div=20,
y_divs=10,
)
vbox.Add(sink1.win, 1, wx.EXPAND)
combine1 = gr.add_cc()
self.connect(src1, (combine1, 0))
self.connect(noise, (combine1, 1))
self.connect(combine1, thr1, sink1)
# src2 = gr.sig_source_f (input_rate, gr.GR_SIN_WAVE, 2e3, 1)
src2 = gr.sig_source_f(input_rate, gr.GR_CONST_WAVE, 57.50e3, 1)
thr2 = gr.throttle(gr.sizeof_float, input_rate)
sink2 = fft_sink_f(
panel,
title="Real Data",
fft_size=fft_size * 2,
sample_rate=input_rate,
baseband_freq=100e3,
ref_level=0,
y_per_div=20,
y_divs=10,
)
vbox.Add(sink2.win, 1, wx.EXPAND)
combine2 = gr.add_ff()
c2f2 = gr.complex_to_float()
self.connect(src2, (combine2, 0))
self.connect(noise, c2f2, (combine2, 1))
self.connect(combine2, thr2, sink2)
def __init__(self, fg, parent, title='', sample_rate=1,
size=default_scopesink_size, frame_decim=default_frame_decim,
v_scale=default_v_scale, t_scale=None):
msgq = gr.msg_queue(2) # message queue that holds at most 2 messages
c2f = gr.complex_to_float()
self.guts = gr.oscope_sink_f(sample_rate, msgq)
fg.connect((c2f, 0), (self.guts, 0))
fg.connect((c2f, 1), (self.guts, 1))
gr.hier_block.__init__(self, fg, c2f, self.guts)
self.win = scope_window(win_info(msgq, sample_rate, frame_decim,
v_scale, t_scale, self.guts, title), parent)
def test_complex_to_float_1 (self):
src_data = (0, 1, -1, 3+4j, -3-4j, -3+4j)
expected_result = (0, 1, -1, 3, -3, -3)
src = gr.vector_source_c (src_data)
op = gr.complex_to_float ()
dst = gr.vector_sink_f ()
self.tb.connect (src, op)
self.tb.connect (op, dst)
self.tb.run () # run the graph and wait for it to finish
actual_result = dst.data () # fetch the contents of the sink
self.assertFloatTuplesAlmostEqual (expected_result, actual_result)
def test_complex_to_float_1(self):
src_data = (0, 1, -1, 3 + 4j, -3 - 4j, -3 + 4j)
expected_result = (0, 1, -1, 3, -3, -3)
src = gr.vector_source_c(src_data)
op = gr.complex_to_float()
dst = gr.vector_sink_f()
self.tb.connect(src, op)
self.tb.connect(op, dst)
self.tb.run() # run the graph and wait for it to finish
actual_result = dst.data() # fetch the contents of the sink
self.assertFloatTuplesAlmostEqual(expected_result, actual_result)
def __init__(self, frame, panel, vbox, argv):
stdgui2.std_top_block.__init__(self, frame, panel, vbox, argv)
fft_size = 256
# build our flow graph
input_rate = 2048.0e3
#Generate some noise
noise = gr.noise_source_c(gr.GR_UNIFORM, 1.0 / 10)
# Generate a complex sinusoid
#src1 = gr.sig_source_c (input_rate, gr.GR_SIN_WAVE, 2e3, 1)
src1 = gr.sig_source_c(input_rate, gr.GR_CONST_WAVE, 57.50e3, 1)
# We add these throttle blocks so that this demo doesn't
# suck down all the CPU available. Normally you wouldn't use these.
thr1 = gr.throttle(gr.sizeof_gr_complex, input_rate)
sink1 = fft_sink_c(panel,
title="Complex Data",
fft_size=fft_size,
sample_rate=input_rate,
baseband_freq=100e3,
ref_level=0,
y_per_div=20,
y_divs=10)
vbox.Add(sink1.win, 1, wx.EXPAND)
combine1 = gr.add_cc()
self.connect(src1, (combine1, 0))
self.connect(noise, (combine1, 1))
self.connect(combine1, thr1, sink1)
#src2 = gr.sig_source_f (input_rate, gr.GR_SIN_WAVE, 2e3, 1)
src2 = gr.sig_source_f(input_rate, gr.GR_CONST_WAVE, 57.50e3, 1)
thr2 = gr.throttle(gr.sizeof_float, input_rate)
sink2 = fft_sink_f(panel,
title="Real Data",
fft_size=fft_size * 2,
sample_rate=input_rate,
baseband_freq=100e3,
ref_level=0,
y_per_div=20,
y_divs=10)
vbox.Add(sink2.win, 1, wx.EXPAND)
combine2 = gr.add_ff()
c2f2 = gr.complex_to_float()
self.connect(src2, (combine2, 0))
self.connect(noise, c2f2, (combine2, 1))
self.connect(combine2, thr2, sink2)
def graph():
sampling_freq = 19200000
fg = gr.flow_graph()
src0 = gr.file_source(gr.sizeof_gr_complex, "/tmp/atsc_pipe_1")
duc_coeffs = gr.firdes.low_pass(1, 19.2e6, 9e6, 1e6, gr.firdes.WIN_HAMMING)
duc = gr.freq_xlating_fir_filter_ccf(1, duc_coeffs, 5.75e6, 19.2e6)
c2f = gr.complex_to_float()
file = gr.file_sink(gr.sizeof_float, "/tmp/atsc_pipe_2")
fg.connect(src0, duc, c2f, file)
fg.run()
def __init__(self, name, options):
gr.hier_block2.__init__( self, "debugger: " + name,
gr.io_signature(1, 1, gr.sizeof_gr_complex), # input signature
gr.io_signature(0, 0, 0*0), # output signature
)
fname = "debug_" + name + ".wav"
self.c_to_iq = gr.complex_to_float()
self.wavdump = gr.wavfile_sink(fname, 2, options.wav_sample_rate, 16)
if options.verbose: print "writing a complex stream to file: %s" % fname
self.connect( self, self.c_to_iq )
self.connect( (self.c_to_iq, 0), (self.wavdump, 0))
self.connect( (self.c_to_iq, 1), (self.wavdump, 1))
def test_complex_to_float_2 (self):
src_data = (0, 1, -1, 3+4j, -3-4j, -3+4j)
expected_result0 = (0, 1, -1, 3, -3, -3)
expected_result1 = (0, 0, 0, 4, -4, 4)
src = gr.vector_source_c (src_data)
op = gr.complex_to_float ()
dst0 = gr.vector_sink_f ()
dst1 = gr.vector_sink_f ()
self.tb.connect (src, op)
self.tb.connect ((op, 0), dst0)
self.tb.connect ((op, 1), dst1)
self.tb.run ()
actual_result = dst0.data ()
self.assertFloatTuplesAlmostEqual (expected_result0, actual_result)
actual_result = dst1.data ()
self.assertFloatTuplesAlmostEqual (expected_result1, actual_result)
def test_complex_to_float_2(self):
src_data = (0, 1, -1, 3 + 4j, -3 - 4j, -3 + 4j)
expected_result0 = (0, 1, -1, 3, -3, -3)
expected_result1 = (0, 0, 0, 4, -4, 4)
src = gr.vector_source_c(src_data)
op = gr.complex_to_float()
dst0 = gr.vector_sink_f()
dst1 = gr.vector_sink_f()
self.tb.connect(src, op)
self.tb.connect((op, 0), dst0)
self.tb.connect((op, 1), dst1)
self.tb.run()
actual_result = dst0.data()
self.assertFloatTuplesAlmostEqual(expected_result0, actual_result)
actual_result = dst1.data()
self.assertFloatTuplesAlmostEqual(expected_result1, actual_result)
def __init__( self, if_rate, af_rate ):
gr.hier_block2.__init__(self, "ssb_demod",
gr.io_signature(1,1,gr.sizeof_gr_complex),
gr.io_signature(1,1,gr.sizeof_float))
self.if_rate = int(if_rate)
self.af_rate = int(af_rate)
self.if_decim = int(if_rate / af_rate)
self.sideband = 1
self.xlate_taps = ([complex(v) for v in file('ssb_taps').readlines()])
self.audio_taps = gr.firdes.low_pass(
1.0,
self.af_rate,
3e3,
600,
gr.firdes.WIN_HAMMING )
self.xlate = gr.freq_xlating_fir_filter_ccc(
self.if_decim,
self.xlate_taps,
0,
self.if_rate )
self.split = gr.complex_to_float()
self.lpf = gr.fir_filter_fff(
1, self.audio_taps )
self.sum = gr.add_ff( )
self.am_sel = gr.multiply_const_ff( 0 )
self.sb_sel = gr.multiply_const_ff( 1 )
self.mixer = gr.add_ff()
self.am_det = gr.complex_to_mag()
self.connect(self, self.xlate)
self.connect(self.xlate, self.split)
self.connect((self.split, 0), (self.sum, 0))
self.connect((self.split, 1), (self.sum, 1))
self.connect(self.sum, self.sb_sel)
self.connect(self.xlate, self.am_det)
self.connect(self.sb_sel, (self.mixer, 0))
self.connect(self.am_det, self.am_sel)
self.connect(self.am_sel, (self.mixer, 1))
self.connect(self.mixer, self.lpf)
self.connect(self.lpf, self)
def test_001(self):
fft_length = 260
carriers = 100
shift = 20
# select maximum estimation range
estim_range = (fft_length - carriers) / 2
l = estim_range + shift
r = estim_range - shift
# create preambles
pn1 = pn_preamble(carriers)
pn2 = pn_preamble(carriers)
diff_pn = concatenate(
[[conjugate(math.sqrt(2) * pn2[2 * i] / pn1[2 * i]), 0.0j]
for i in range(carriers / 2)])
pn1_sym = extend_symbol(pn1, l, r)
pn2_sym = extend_symbol(pn2, l, r)
# block under tests
cfo_estimator = ofdm.schmidl_cfo_estimator(fft_length, carriers,
estim_range, diff_pn)
# source, conversion, sink
src_1 = gr.vector_source_c(pn1_sym)
src_2 = gr.vector_source_c(pn2_sym)
s2v_1 = gr.stream_to_vector(gr.sizeof_gr_complex, fft_length)
s2v_2 = gr.stream_to_vector(gr.sizeof_gr_complex, fft_length)
v2s = gr.vector_to_stream(gr.sizeof_float, 2 * estim_range + 1)
dst = gr.vector_sink_f()
self.fg.connect(src_1, s2v_1, (cfo_estimator, 0))
self.fg.connect(src_2, s2v_2, (cfo_estimator, 1))
self.fg.connect(cfo_estimator, v2s, dst)
# file output
filesink = gr.file_sink(gr.sizeof_float, "test_cfo.float")
vec_equ = vector_equalizer(2 * estim_range + 1)
self.fg.connect(
v2s, gr.float_to_complex(),
gr.stream_to_vector(gr.sizeof_gr_complex, 2 * estim_range + 1),
vec_equ,
gr.vector_to_stream(gr.sizeof_gr_complex, 2 * estim_range + 1),
gr.complex_to_float(), filesink)
runtime = self.fg
runtime.run()
def graph():
print os.getpid()
sampling_freq = 19200000
tb = gr.top_block()
src0 = gr.file_source(gr.sizeof_gr_complex, "/tmp/atsc_pipe_1")
duc_coeffs = gr.firdes.low_pass(1, 19.2e6, 9e6, 1e6, gr.firdes.WIN_HAMMING)
duc = gr.freq_xlating_fir_filter_ccf(1, duc_coeffs, 5.75e6, 19.2e6)
c2f = gr.complex_to_float()
file = gr.file_sink(gr.sizeof_float, "/tmp/atsc_pipe_2")
tb.connect(src0, duc, c2f, file)
tb.run()
def __init__(self, outputfile, options):
gr.top_block.__init__(self)
if options.dsp:
self.dst = audio.sink( options.dsp_sample_rate )
else:
self.dst = gr.wavfile_sink(outputfile, 2, options.wav_sample_rate, 16)
self.c_to_iq = gr.complex_to_float()
self.connect( (self.c_to_iq, 0), (self.dst, 0))
self.connect( (self.c_to_iq, 1), (self.dst, 1))
# settings for the modulator: /usr/local/lib/python2.5/site-packages/gnuradio/blks2impl/gmsk.py
self.modulator = blks2.gmsk_mod(samples_per_symbol=options.samples_per_symbol)
self.pkt_queue = blks2.mod_pkts( modulator=self.modulator )
if options.carrier_frequency == 0:
self.mixer = self.pkt_queue
else:
self.mixer = gr.multiply_vcc(1)
self.carrier = gr.sig_source_c( options.carrier_sample_rate, gr.GR_SIN_WAVE, options.carrier_frequency, 1.0 )
self.lowpass = gr.fir_filter_ccf(1, firdes.low_pass(1, 48000, 48000/(2*options.samples_per_symbol)+500, 500, firdes.WIN_HAMMING, 6.76))
self.connect(self.pkt_queue, self.lowpass, (self.mixer, 0) )
self.connect(self.carrier, (self.mixer, 1) )
self.amp = gr.multiply_const_cc(1); self.amp.set_k(options.amp_amplitude)
self.connect(self.mixer, self.amp, self.c_to_iq)
if options.debug_wavs:
from myblks import debugwav
self._dpassw = debugwav("tx_passband", options)
self._dprefw = debugwav("tx_prefband", options)
self._dbasew = debugwav("tx_baseband", options)
self.connect(self.amp, self._dpassw)
self.connect(self.lowpass, self._dbasew)
self.connect(self.pkt_queue, self._dprefw)
if options.debug_files:
self._dpassf = gr.file_sink(gr.sizeof_gr_complex*1, "debug_tx_passband.d_c")
self._dpreff = gr.file_sink(gr.sizeof_gr_complex*1, "debug_tx_prefband.d_c")
self._dbasef = gr.file_sink(gr.sizeof_gr_complex*1, "debug_tx_baseband.d_c")
self.connect(self.amp, self._dpassf)
self.connect(self.pkt_queue, self._dpreff)
self.connect(self.lowpass, self._dbasef)
def __init__(self, parent, title='', sample_rate=1,
size=default_scopesink_size, frame_decim=default_frame_decim,
v_scale=default_v_scale, t_scale=None, num_inputs=1):
gr.hier_block2.__init__(self, "scope_sink_c",
gr.io_signature(num_inputs, num_inputs, gr.sizeof_gr_complex),
gr.io_signature(0,0,0))
msgq = gr.msg_queue(2) # message queue that holds at most 2 messages
self.guts = gr.oscope_sink_f(sample_rate, msgq)
for i in range(num_inputs):
c2f = gr.complex_to_float()
self.connect((self, i), c2f)
self.connect((c2f, 0), (self.guts, 2*i+0))
self.connect((c2f, 1), (self.guts, 2*i+1))
self.win = scope_window(win_info(msgq, sample_rate, frame_decim,
v_scale, t_scale, self.guts, title), parent)
def __init__( self, fg, if_rate, af_rate ):
self.if_rate = if_rate
self.af_rate = af_rate
self.if_decim = if_rate / af_rate
self.sideband = 1
self.xlate_taps = ([complex(v) for v in file('ssb_taps').readlines()])
self.audio_taps = gr.firdes.low_pass(
1.0,
self.af_rate,
3e3,
600,
gr.firdes.WIN_HAMMING )
self.xlate = gr.freq_xlating_fir_filter_ccc(
self.if_decim,
self.xlate_taps,
0,
self.if_rate )
self.split = gr.complex_to_float()
self.lpf = gr.fir_filter_fff(
1, self.audio_taps )
self.sum = gr.add_ff( )
self.am_sel = gr.multiply_const_ff( 0 )
self.sb_sel = gr.multiply_const_ff( 1 )
self.mixer = gr.add_ff()
self.am_det = gr.complex_to_mag()
fg.connect( self.xlate, self.split )
fg.connect( ( self.split,0 ), ( self.sum,0 ) )
fg.connect( ( self.split,1 ), ( self.sum,1 ) )
fg.connect( self.sum, self.sb_sel )
fg.connect( self.xlate, self.am_det )
fg.connect( self.sb_sel, ( self.mixer, 0 ) )
fg.connect( self.am_det, self.am_sel )
fg.connect( self.am_sel, ( self.mixer, 1 ) )
fg.connect( self.mixer, self.lpf )
gr.hier_block.__init__( self, fg, self.xlate, self.lpf )
def __init__(self):
gr.top_block.__init__(self)
self.frequency = 13.56e6
self.gain = 3
# USRP settings
self.u_rx = usrp.source_c() #create the USRP source for RX
#try and set the LF_RX for this
rx_subdev_spec = usrp.pick_subdev(self.u_rx,
(usrp_dbid.LF_RX, usrp_dbid.LF_TX))
#Configure the MUX for the daughterboard
self.u_rx.set_mux(
usrp.determine_rx_mux_value(self.u_rx, rx_subdev_spec))
#Tell it to use the LF_RX
self.subdev_rx = usrp.selected_subdev(self.u_rx, rx_subdev_spec)
#Make sure it worked
print "Using RX dboard %s" % (self.subdev_rx.side_and_name(), )
#Set gain.. duh
self.subdev_rx.set_gain(self.gain)
#Tune the center frequency
self.u_rx.tune(0, self.subdev_rx, self.frequency)
adc_rate = self.u_rx.adc_rate() #64 MS/s
usrp_decim = 8
self.u_rx.set_decim_rate(usrp_decim)
#BW = 64 MS/s / decim = 64,000,000 / 256 = 250 kHz
#Not sure if this decim rate exceeds USRP capabilities,
#if it does then some software decim may have to be done as well
usrp_rx_rate = adc_rate / usrp_decim
#self.convert = gr.short_to_float()
self.snk = gr.probe_signal_f()
self.convert = gr.complex_to_float()
# dst = audio.sink (sample_rate, "")
# stv = gr.stream_to_vector (gr.sizeof_float, fft_size)
# c2m = gr.complex_to_mag_squared (fft_size)
self.connect(self.u_rx, self.convert, self.snk)
def test_001(self):
fft_length = 260
carriers = 100
shift = 20
# select maximum estimation range
estim_range = (fft_length-carriers)/2
l = estim_range+shift
r = estim_range-shift
# create preambles
pn1 = pn_preamble(carriers)
pn2 = pn_preamble(carriers)
diff_pn = concatenate([[conjugate(math.sqrt(2)*pn2[2*i]/pn1[2*i]),0.0j] for i in range(carriers/2)])
pn1_sym = extend_symbol(pn1,l,r)
pn2_sym = extend_symbol(pn2,l,r)
# block under tests
cfo_estimator = ofdm.schmidl_cfo_estimator(fft_length,carriers,estim_range,diff_pn)
# source, conversion, sink
src_1 = gr.vector_source_c(pn1_sym)
src_2 = gr.vector_source_c(pn2_sym)
s2v_1 = gr.stream_to_vector(gr.sizeof_gr_complex,fft_length)
s2v_2 = gr.stream_to_vector(gr.sizeof_gr_complex,fft_length)
v2s = gr.vector_to_stream(gr.sizeof_float,2*estim_range+1)
dst = gr.vector_sink_f()
self.fg.connect(src_1, s2v_1, (cfo_estimator,0))
self.fg.connect(src_2, s2v_2, (cfo_estimator,1))
self.fg.connect(cfo_estimator,v2s,dst)
# file output
filesink = gr.file_sink(gr.sizeof_float,"test_cfo.float")
vec_equ = vector_equalizer(2*estim_range+1)
self.fg.connect(v2s,gr.float_to_complex(),
gr.stream_to_vector(gr.sizeof_gr_complex,2*estim_range+1),
vec_equ,gr.vector_to_stream(gr.sizeof_gr_complex,2*estim_range+1),
gr.complex_to_float(),filesink)
runtime=self.fg
runtime.run()
def __init__(self, magnitude=0, phase=0):
"""
Parameters:
amplitude: float
phase: float (degree)
"""
gr.hier_block2.__init__(
self, "IQ Imbalance Generator",
gr.io_signature(1, 1, gr.sizeof_gr_complex),
gr.io_signature(1, 1, gr.sizeof_gr_complex),
)
##################################################
# Parameters
##################################################
self.magnitude = magnitude
self.phase = phase
##################################################
# Blocks
##################################################
self.mag = gr.multiply_const_vff((math.pow(10, magnitude / 20.0), ))
self.gr_multiply_const_vxx_0 = gr.multiply_const_vff(
(math.sin(phase * math.pi / 180.0), ))
self.gr_float_to_complex_0 = gr.float_to_complex(1)
self.gr_complex_to_float_0 = gr.complex_to_float(1)
self.gr_add_xx_0 = gr.add_vff(1)
##################################################
# Connections
##################################################
self.connect((self.gr_float_to_complex_0, 0), (self, 0))
self.connect((self, 0), (self.gr_complex_to_float_0, 0))
self.connect((self.gr_complex_to_float_0, 0), (self.mag, 0))
self.connect((self.mag, 0), (self.gr_float_to_complex_0, 0))
self.connect((self.gr_add_xx_0, 0), (self.gr_float_to_complex_0, 1))
self.connect((self.gr_multiply_const_vxx_0, 0), (self.gr_add_xx_0, 0))
self.connect((self.gr_complex_to_float_0, 1), (self.gr_add_xx_0, 1))
self.connect((self.gr_complex_to_float_0, 0),
(self.gr_multiply_const_vxx_0, 0))
def __init__(self):
gr.top_block.__init__(self)
self.frequency = 13.56e6
self.gain = 3
# USRP settings
self.u_rx = usrp.source_c() #create the USRP source for RX
#try and set the LF_RX for this
rx_subdev_spec = usrp.pick_subdev(self.u_rx, (usrp_dbid.LF_RX, usrp_dbid.LF_TX))
#Configure the MUX for the daughterboard
self.u_rx.set_mux(usrp.determine_rx_mux_value(self.u_rx, rx_subdev_spec))
#Tell it to use the LF_RX
self.subdev_rx = usrp.selected_subdev(self.u_rx, rx_subdev_spec)
#Make sure it worked
print "Using RX dboard %s" % (self.subdev_rx.side_and_name(),)
#Set gain.. duh
self.subdev_rx.set_gain(self.gain)
#Tune the center frequency
self.u_rx.tune(0, self.subdev_rx, self.frequency)
adc_rate = self.u_rx.adc_rate() #64 MS/s
usrp_decim = 8
self.u_rx.set_decim_rate(usrp_decim)
#BW = 64 MS/s / decim = 64,000,000 / 256 = 250 kHz
#Not sure if this decim rate exceeds USRP capabilities,
#if it does then some software decim may have to be done as well
usrp_rx_rate = adc_rate / usrp_decim
#self.convert = gr.short_to_float()
self.snk = gr.probe_signal_f()
self.convert = gr.complex_to_float()
# dst = audio.sink (sample_rate, "")
# stv = gr.stream_to_vector (gr.sizeof_float, fft_size)
# c2m = gr.complex_to_mag_squared (fft_size)
self.connect(self.u_rx, self.convert, self.snk)
def __init__(self, if_rate, af_rate):
gr.hier_block2.__init__(self, "ssb_demod",
gr.io_signature(1, 1, gr.sizeof_gr_complex),
gr.io_signature(1, 1, gr.sizeof_float))
self.if_rate = int(if_rate)
self.af_rate = int(af_rate)
self.if_decim = int(if_rate / af_rate)
self.sideband = 1
self.xlate_taps = ([complex(v) for v in file('ssb_taps').readlines()])
self.audio_taps = gr.firdes.low_pass(1.0, self.af_rate, 3e3, 600,
gr.firdes.WIN_HAMMING)
self.xlate = gr.freq_xlating_fir_filter_ccc(self.if_decim,
self.xlate_taps, 0,
self.if_rate)
self.split = gr.complex_to_float()
self.lpf = gr.fir_filter_fff(1, self.audio_taps)
self.sum = gr.add_ff()
self.am_sel = gr.multiply_const_ff(0)
self.sb_sel = gr.multiply_const_ff(1)
self.mixer = gr.add_ff()
self.am_det = gr.complex_to_mag()
self.connect(self, self.xlate)
self.connect(self.xlate, self.split)
self.connect((self.split, 0), (self.sum, 0))
self.connect((self.split, 1), (self.sum, 1))
self.connect(self.sum, self.sb_sel)
self.connect(self.xlate, self.am_det)
self.connect(self.sb_sel, (self.mixer, 0))
self.connect(self.am_det, self.am_sel)
self.connect(self.am_sel, (self.mixer, 1))
self.connect(self.mixer, self.lpf)
self.connect(self.lpf, self)
def __init__(self,
infile="data",
samp_rate=1000000,
outfile="data.wav",
amp=70):
gr.top_block.__init__(self, "Analyze")
##################################################
# Parameters
##################################################
self.infile = infile
self.samp_rate = samp_rate
self.outfile = outfile
self.amp = amp
##################################################
# Blocks
##################################################
self.gr_wavfile_sink_0 = gr.wavfile_sink(outfile, 3, samp_rate, 16)
self.gr_multiply_const_vxx_0 = gr.multiply_const_vcc((amp, ))
self.gr_file_source_0 = gr.file_source(gr.sizeof_gr_complex * 1,
infile, False)
self.gr_complex_to_mag_0 = gr.complex_to_mag(1)
self.gr_complex_to_float_0 = gr.complex_to_float(1)
##################################################
# Connections
##################################################
self.connect((self.gr_file_source_0, 0),
(self.gr_multiply_const_vxx_0, 0))
self.connect((self.gr_multiply_const_vxx_0, 0),
(self.gr_complex_to_float_0, 0))
self.connect((self.gr_multiply_const_vxx_0, 0),
(self.gr_complex_to_mag_0, 0))
self.connect((self.gr_complex_to_mag_0, 0),
(self.gr_wavfile_sink_0, 2))
self.connect((self.gr_complex_to_float_0, 1),
(self.gr_wavfile_sink_0, 1))
self.connect((self.gr_complex_to_float_0, 0),
(self.gr_wavfile_sink_0, 0))
def setup_interferometer(self, setimode): self.setup_radiometer_common(2) self.di = gr.deinterleave(gr.sizeof_gr_complex) self.connect (self.u, self.di) self.corr = gr.multiply_cc() self.c2f = gr.complex_to_float() self.shead = (self.di, 0) # Channel 0 to multiply port 0 # Channel 1 to multiply port 1 if (self.use_notches == False): self.connect((self.di, 0), (self.corr, 0)) self.connect((self.di, 1), (self.corr, 1)) else: self.connect((self.di, 0), self.notch_filt1, (self.corr, 0)) self.connect((self.di, 1), self.notch_filt2, (self.corr, 0)) # # Multiplier (correlator) to complex-to-float, followed by integrator, etc # self.connect(self.corr, self.c2f, self.integrator, self.keepn, self.cal_mult, self.cal_offs, self.chart) # # FFT scope gets only 1 channel # FIX THIS, by cross-correlating the *outputs* of two different FFTs, then display # Funky! # self.connect(self.shead, self.scope) # # Output of correlator/integrator chain to probe # self.connect(self.cal_offs, self.probe) return
def __init__(self, fg, if_rate, af_rate):
self.if_rate = if_rate
self.af_rate = af_rate
self.if_decim = if_rate / af_rate
self.sideband = 1
self.xlate_taps = ([complex(v) for v in file('ssb_taps').readlines()])
self.audio_taps = gr.firdes.low_pass(1.0, self.af_rate, 3e3, 600,
gr.firdes.WIN_HAMMING)
self.xlate = gr.freq_xlating_fir_filter_ccc(self.if_decim,
self.xlate_taps, 0,
self.if_rate)
self.split = gr.complex_to_float()
self.lpf = gr.fir_filter_fff(1, self.audio_taps)
self.sum = gr.add_ff()
self.am_sel = gr.multiply_const_ff(0)
self.sb_sel = gr.multiply_const_ff(1)
self.mixer = gr.add_ff()
self.am_det = gr.complex_to_mag()
fg.connect(self.xlate, self.split)
fg.connect((self.split, 0), (self.sum, 0))
fg.connect((self.split, 1), (self.sum, 1))
fg.connect(self.sum, self.sb_sel)
fg.connect(self.xlate, self.am_det)
fg.connect(self.sb_sel, (self.mixer, 0))
fg.connect(self.am_det, self.am_sel)
fg.connect(self.am_sel, (self.mixer, 1))
fg.connect(self.mixer, self.lpf)
gr.hier_block.__init__(self, fg, self.xlate, self.lpf)
def __init__(
self,
parent,
title='',
sample_rate=1,
size=scope_window.DEFAULT_WIN_SIZE,
v_scale=0,
t_scale=0,
v_offset=0,
xy_mode=False,
ac_couple=False,
num_inputs=1,
trig_mode=scope_window.DEFAULT_TRIG_MODE,
y_axis_label='Counts',
frame_rate=scope_window.DEFAULT_FRAME_RATE,
use_persistence=False,
persist_alpha=None,
**kwargs #do not end with a comma
):
#ensure analog alpha
if persist_alpha is None:
actual_frame_rate=float(frame_rate)
analog_cutoff_freq=0.5 # Hertz
#calculate alpha from wanted cutoff freq
persist_alpha = 1.0 - math.exp(-2.0*math.pi*analog_cutoff_freq/actual_frame_rate)
if not t_scale: t_scale = 10.0/sample_rate
#init
gr.hier_block2.__init__(
self,
"scope_sink",
gr.io_signature(num_inputs, num_inputs, self._item_size),
gr.io_signature(0, 0, 0),
)
#scope
msgq = gr.msg_queue(2)
scope = gr.oscope_sink_f(sample_rate, msgq)
#controller
self.controller = pubsub()
self.controller.subscribe(SAMPLE_RATE_KEY, scope.set_sample_rate)
self.controller.publish(SAMPLE_RATE_KEY, scope.sample_rate)
self.controller.subscribe(DECIMATION_KEY, scope.set_decimation_count)
self.controller.publish(DECIMATION_KEY, scope.get_decimation_count)
self.controller.subscribe(TRIGGER_LEVEL_KEY, scope.set_trigger_level)
self.controller.publish(TRIGGER_LEVEL_KEY, scope.get_trigger_level)
self.controller.subscribe(TRIGGER_MODE_KEY, scope.set_trigger_mode)
self.controller.publish(TRIGGER_MODE_KEY, scope.get_trigger_mode)
self.controller.subscribe(TRIGGER_SLOPE_KEY, scope.set_trigger_slope)
self.controller.publish(TRIGGER_SLOPE_KEY, scope.get_trigger_slope)
self.controller.subscribe(TRIGGER_CHANNEL_KEY, scope.set_trigger_channel)
self.controller.publish(TRIGGER_CHANNEL_KEY, scope.get_trigger_channel)
actual_num_inputs = self._real and num_inputs or num_inputs*2
#init ac couple
for i in range(actual_num_inputs):
self.controller[common.index_key(AC_COUPLE_KEY, i)] = ac_couple
#start input watcher
common.input_watcher(msgq, self.controller, MSG_KEY)
#create window
self.win = scope_window.scope_window(
parent=parent,
controller=self.controller,
size=size,
title=title,
frame_rate=frame_rate,
num_inputs=actual_num_inputs,
sample_rate_key=SAMPLE_RATE_KEY,
t_scale=t_scale,
v_scale=v_scale,
v_offset=v_offset,
xy_mode=xy_mode,
trig_mode=trig_mode,
y_axis_label=y_axis_label,
ac_couple_key=AC_COUPLE_KEY,
trigger_level_key=TRIGGER_LEVEL_KEY,
trigger_mode_key=TRIGGER_MODE_KEY,
trigger_slope_key=TRIGGER_SLOPE_KEY,
trigger_channel_key=TRIGGER_CHANNEL_KEY,
decimation_key=DECIMATION_KEY,
msg_key=MSG_KEY,
use_persistence=use_persistence,
persist_alpha=persist_alpha,
)
common.register_access_methods(self, self.win)
#connect
if self._real:
for i in range(num_inputs):
self.wxgui_connect(
(self, i),
ac_couple_block(self.controller, common.index_key(AC_COUPLE_KEY, i), SAMPLE_RATE_KEY),
(scope, i),
)
else:
for i in range(num_inputs):
c2f = gr.complex_to_float()
self.wxgui_connect((self, i), c2f)
for j in range(2):
self.connect(
(c2f, j),
ac_couple_block(self.controller, common.index_key(AC_COUPLE_KEY, 2*i+j), SAMPLE_RATE_KEY),
(scope, 2*i+j),
)
def __init__(self, *args, **kwds):
# begin wxGlade: MyFrame.__init__
kwds["style"] = wx.DEFAULT_FRAME_STYLE
wx.Frame.__init__(self, *args, **kwds)
# Menu Bar
self.frame_1_menubar = wx.MenuBar()
self.SetMenuBar(self.frame_1_menubar)
wxglade_tmp_menu = wx.Menu()
self.Exit = wx.MenuItem(wxglade_tmp_menu, ID_EXIT, "Exit", "Exit",
wx.ITEM_NORMAL)
wxglade_tmp_menu.AppendItem(self.Exit)
self.frame_1_menubar.Append(wxglade_tmp_menu, "File")
# Menu Bar end
self.panel_1 = wx.Panel(self, -1)
self.button_1 = wx.Button(self, ID_BUTTON_1, "LSB")
self.button_2 = wx.Button(self, ID_BUTTON_2, "USB")
self.button_3 = wx.Button(self, ID_BUTTON_3, "AM")
self.button_4 = wx.Button(self, ID_BUTTON_4, "CW")
self.button_5 = wx.ToggleButton(self, ID_BUTTON_5, "Upper")
self.slider_fcutoff_hi = wx.Slider(self,
ID_SLIDER_1,
0,
-15798,
15799,
style=wx.SL_HORIZONTAL
| wx.SL_LABELS)
self.button_6 = wx.ToggleButton(self, ID_BUTTON_6, "Lower")
self.slider_fcutoff_lo = wx.Slider(self,
ID_SLIDER_2,
0,
-15799,
15798,
style=wx.SL_HORIZONTAL
| wx.SL_LABELS)
self.panel_5 = wx.Panel(self, -1)
self.label_1 = wx.StaticText(self, -1, " Band\nCenter")
self.text_ctrl_1 = wx.TextCtrl(self, ID_TEXT_1, "")
self.panel_6 = wx.Panel(self, -1)
self.panel_7 = wx.Panel(self, -1)
self.panel_2 = wx.Panel(self, -1)
self.button_7 = wx.ToggleButton(self, ID_BUTTON_7, "Freq")
self.slider_3 = wx.Slider(self, ID_SLIDER_3, 3000, 0, 6000)
self.spin_ctrl_1 = wx.SpinCtrl(self, ID_SPIN_1, "", min=0, max=100)
self.button_8 = wx.ToggleButton(self, ID_BUTTON_8, "Vol")
self.slider_4 = wx.Slider(self, ID_SLIDER_4, 0, 0, 500)
self.slider_5 = wx.Slider(self, ID_SLIDER_5, 0, 0, 20)
self.button_9 = wx.ToggleButton(self, ID_BUTTON_9, "Time")
self.button_11 = wx.Button(self, ID_BUTTON_11, "Rew")
self.button_10 = wx.Button(self, ID_BUTTON_10, "Fwd")
self.panel_3 = wx.Panel(self, -1)
self.label_2 = wx.StaticText(self, -1, "PGA ")
self.panel_4 = wx.Panel(self, -1)
self.panel_8 = wx.Panel(self, -1)
self.panel_9 = wx.Panel(self, -1)
self.label_3 = wx.StaticText(self, -1, "AM Sync\nCarrier")
self.slider_6 = wx.Slider(self,
ID_SLIDER_6,
50,
0,
200,
style=wx.SL_HORIZONTAL | wx.SL_LABELS)
self.label_4 = wx.StaticText(self, -1, "Antenna Tune")
self.slider_7 = wx.Slider(self,
ID_SLIDER_7,
1575,
950,
2200,
style=wx.SL_HORIZONTAL | wx.SL_LABELS)
self.panel_10 = wx.Panel(self, -1)
self.button_12 = wx.ToggleButton(self, ID_BUTTON_12, "Auto Tune")
self.button_13 = wx.Button(self, ID_BUTTON_13, "Calibrate")
self.button_14 = wx.Button(self, ID_BUTTON_14, "Reset")
self.panel_11 = wx.Panel(self, -1)
self.panel_12 = wx.Panel(self, -1)
self.__set_properties()
self.__do_layout()
# end wxGlade
parser = OptionParser(option_class=eng_option)
parser.add_option("",
"--address",
type="string",
default="addr=192.168.10.2",
help="Address of UHD device, [default=%default]")
parser.add_option("-c",
"--ddc-freq",
type="eng_float",
default=3.9e6,
help="set Rx DDC frequency to FREQ",
metavar="FREQ")
parser.add_option(
"-s",
"--samp-rate",
type="eng_float",
default=256e3,
help="set sample rate (bandwidth) [default=%default]")
parser.add_option("-a",
"--audio_file",
default="",
help="audio output file",
metavar="FILE")
parser.add_option("-r",
"--radio_file",
default="",
help="radio output file",
metavar="FILE")
parser.add_option("-i",
"--input_file",
default="",
help="radio input file",
metavar="FILE")
parser.add_option(
"-O",
"--audio-output",
type="string",
default="",
help="audio output device name. E.g., hw:0,0, /dev/dsp, or pulse")
(options, args) = parser.parse_args()
self.usrp_center = options.ddc_freq
input_rate = options.samp_rate
self.slider_range = input_rate * 0.9375
self.f_lo = self.usrp_center - (self.slider_range / 2)
self.f_hi = self.usrp_center + (self.slider_range / 2)
self.af_sample_rate = 32000
fir_decim = long(input_rate / self.af_sample_rate)
# data point arrays for antenna tuner
self.xdata = []
self.ydata = []
self.tb = gr.top_block()
# radio variables, initial conditions
self.frequency = self.usrp_center
# these map the frequency slider (0-6000) to the actual range
self.f_slider_offset = self.f_lo
self.f_slider_scale = 10000
self.spin_ctrl_1.SetRange(self.f_lo, self.f_hi)
self.text_ctrl_1.SetValue(str(int(self.usrp_center)))
self.slider_5.SetValue(0)
self.AM_mode = False
self.slider_3.SetValue(
(self.frequency - self.f_slider_offset) / self.f_slider_scale)
self.spin_ctrl_1.SetValue(int(self.frequency))
POWERMATE = True
try:
self.pm = powermate.powermate(self)
except:
sys.stderr.write("Unable to find PowerMate or Contour Shuttle\n")
POWERMATE = False
if POWERMATE:
powermate.EVT_POWERMATE_ROTATE(self, self.on_rotate)
powermate.EVT_POWERMATE_BUTTON(self, self.on_pmButton)
self.active_button = 7
# command line options
if options.audio_file == "": SAVE_AUDIO_TO_FILE = False
else: SAVE_AUDIO_TO_FILE = True
if options.radio_file == "": SAVE_RADIO_TO_FILE = False
else: SAVE_RADIO_TO_FILE = True
if options.input_file == "": self.PLAY_FROM_USRP = True
else: self.PLAY_FROM_USRP = False
if self.PLAY_FROM_USRP:
self.src = uhd.usrp_source(device_addr=options.address,
io_type=uhd.io_type.COMPLEX_FLOAT32,
num_channels=1)
self.src.set_samp_rate(input_rate)
input_rate = self.src.get_samp_rate()
self.src.set_center_freq(self.usrp_center, 0)
self.tune_offset = 0
else:
self.src = gr.file_source(gr.sizeof_short, options.input_file)
self.tune_offset = 2200 # 2200 works for 3.5-4Mhz band
# convert rf data in interleaved short int form to complex
s2ss = gr.stream_to_streams(gr.sizeof_short, 2)
s2f1 = gr.short_to_float()
s2f2 = gr.short_to_float()
src_f2c = gr.float_to_complex()
self.tb.connect(self.src, s2ss)
self.tb.connect((s2ss, 0), s2f1)
self.tb.connect((s2ss, 1), s2f2)
self.tb.connect(s2f1, (src_f2c, 0))
self.tb.connect(s2f2, (src_f2c, 1))
# save radio data to a file
if SAVE_RADIO_TO_FILE:
radio_file = gr.file_sink(gr.sizeof_short, options.radio_file)
self.tb.connect(self.src, radio_file)
# 2nd DDC
xlate_taps = gr.firdes.low_pass ( \
1.0, input_rate, 16e3, 4e3, gr.firdes.WIN_HAMMING )
self.xlate = gr.freq_xlating_fir_filter_ccf ( \
fir_decim, xlate_taps, self.tune_offset, input_rate )
# Complex Audio filter
audio_coeffs = gr.firdes.complex_band_pass(
1.0, # gain
self.af_sample_rate, # sample rate
-3000, # low cutoff
0, # high cutoff
100, # transition
gr.firdes.WIN_HAMMING) # window
self.slider_fcutoff_hi.SetValue(0)
self.slider_fcutoff_lo.SetValue(-3000)
self.audio_filter = gr.fir_filter_ccc(1, audio_coeffs)
# Main +/- 16Khz spectrum display
self.fft = fftsink2.fft_sink_c(self.panel_2,
fft_size=512,
sample_rate=self.af_sample_rate,
average=True,
size=(640, 240))
# AM Sync carrier
if AM_SYNC_DISPLAY:
self.fft2 = fftsink.fft_sink_c(self.tb,
self.panel_9,
y_per_div=20,
fft_size=512,
sample_rate=self.af_sample_rate,
average=True,
size=(640, 240))
c2f = gr.complex_to_float()
# AM branch
self.sel_am = gr.multiply_const_cc(0)
# the following frequencies turn out to be in radians/sample
# gr.pll_refout_cc(alpha,beta,min_freq,max_freq)
# suggested alpha = X, beta = .25 * X * X
pll = gr.pll_refout_cc(.5, .0625,
(2. * math.pi * 7.5e3 / self.af_sample_rate),
(2. * math.pi * 6.5e3 / self.af_sample_rate))
self.pll_carrier_scale = gr.multiply_const_cc(complex(10, 0))
am_det = gr.multiply_cc()
# these are for converting +7.5kHz to -7.5kHz
# for some reason gr.conjugate_cc() adds noise ??
c2f2 = gr.complex_to_float()
c2f3 = gr.complex_to_float()
f2c = gr.float_to_complex()
phaser1 = gr.multiply_const_ff(1)
phaser2 = gr.multiply_const_ff(-1)
# filter for pll generated carrier
pll_carrier_coeffs = gr.firdes.complex_band_pass(
2.0, # gain
self.af_sample_rate, # sample rate
7400, # low cutoff
7600, # high cutoff
100, # transition
gr.firdes.WIN_HAMMING) # window
self.pll_carrier_filter = gr.fir_filter_ccc(1, pll_carrier_coeffs)
self.sel_sb = gr.multiply_const_ff(1)
combine = gr.add_ff()
#AGC
sqr1 = gr.multiply_ff()
intr = gr.iir_filter_ffd([.004, 0], [0, .999])
offset = gr.add_const_ff(1)
agc = gr.divide_ff()
self.scale = gr.multiply_const_ff(0.00001)
dst = audio.sink(long(self.af_sample_rate), options.audio_output)
if self.PLAY_FROM_USRP:
self.tb.connect(self.src, self.xlate, self.fft)
else:
self.tb.connect(src_f2c, self.xlate, self.fft)
self.tb.connect(self.xlate, self.audio_filter, self.sel_am,
(am_det, 0))
self.tb.connect(self.sel_am, pll, self.pll_carrier_scale,
self.pll_carrier_filter, c2f3)
self.tb.connect((c2f3, 0), phaser1, (f2c, 0))
self.tb.connect((c2f3, 1), phaser2, (f2c, 1))
self.tb.connect(f2c, (am_det, 1))
self.tb.connect(am_det, c2f2, (combine, 0))
self.tb.connect(self.audio_filter, c2f, self.sel_sb, (combine, 1))
if AM_SYNC_DISPLAY:
self.tb.connect(self.pll_carrier_filter, self.fft2)
self.tb.connect(combine, self.scale)
self.tb.connect(self.scale, (sqr1, 0))
self.tb.connect(self.scale, (sqr1, 1))
self.tb.connect(sqr1, intr, offset, (agc, 1))
self.tb.connect(self.scale, (agc, 0))
self.tb.connect(agc, dst)
if SAVE_AUDIO_TO_FILE:
f_out = gr.file_sink(gr.sizeof_short, options.audio_file)
sc1 = gr.multiply_const_ff(64000)
f2s1 = gr.float_to_short()
self.tb.connect(agc, sc1, f2s1, f_out)
self.tb.start()
# for mouse position reporting on fft display
self.fft.win.Bind(wx.EVT_LEFT_UP, self.Mouse)
# and left click to re-tune
self.fft.win.Bind(wx.EVT_LEFT_DOWN, self.Click)
# start a timer to check for web commands
if WEB_CONTROL:
self.timer = UpdateTimer(self, 1000) # every 1000 mSec, 1 Sec
wx.EVT_BUTTON(self, ID_BUTTON_1, self.set_lsb)
wx.EVT_BUTTON(self, ID_BUTTON_2, self.set_usb)
wx.EVT_BUTTON(self, ID_BUTTON_3, self.set_am)
wx.EVT_BUTTON(self, ID_BUTTON_4, self.set_cw)
wx.EVT_BUTTON(self, ID_BUTTON_10, self.fwd)
wx.EVT_BUTTON(self, ID_BUTTON_11, self.rew)
wx.EVT_BUTTON(self, ID_BUTTON_13, self.AT_calibrate)
wx.EVT_BUTTON(self, ID_BUTTON_14, self.AT_reset)
wx.EVT_TOGGLEBUTTON(self, ID_BUTTON_5, self.on_button)
wx.EVT_TOGGLEBUTTON(self, ID_BUTTON_6, self.on_button)
wx.EVT_TOGGLEBUTTON(self, ID_BUTTON_7, self.on_button)
wx.EVT_TOGGLEBUTTON(self, ID_BUTTON_8, self.on_button)
wx.EVT_TOGGLEBUTTON(self, ID_BUTTON_9, self.on_button)
wx.EVT_SLIDER(self, ID_SLIDER_1, self.set_filter)
wx.EVT_SLIDER(self, ID_SLIDER_2, self.set_filter)
wx.EVT_SLIDER(self, ID_SLIDER_3, self.slide_tune)
wx.EVT_SLIDER(self, ID_SLIDER_4, self.set_volume)
wx.EVT_SLIDER(self, ID_SLIDER_5, self.set_pga)
wx.EVT_SLIDER(self, ID_SLIDER_6, self.am_carrier)
wx.EVT_SLIDER(self, ID_SLIDER_7, self.antenna_tune)
wx.EVT_SPINCTRL(self, ID_SPIN_1, self.spin_tune)
wx.EVT_MENU(self, ID_EXIT, self.TimeToQuit)
def __init__(self, *args, **kwds):
# begin wxGlade: MyFrame.__init__
kwds["style"] = wx.DEFAULT_FRAME_STYLE
wx.Frame.__init__(self, *args, **kwds)
# Menu Bar
self.frame_1_menubar = wx.MenuBar()
self.SetMenuBar(self.frame_1_menubar)
wxglade_tmp_menu = wx.Menu()
self.Exit = wx.MenuItem(wxglade_tmp_menu, ID_EXIT, "Exit", "Exit", wx.ITEM_NORMAL)
wxglade_tmp_menu.AppendItem(self.Exit)
self.frame_1_menubar.Append(wxglade_tmp_menu, "File")
# Menu Bar end
self.panel_1 = wx.Panel(self, -1)
self.button_1 = wx.Button(self, ID_BUTTON_1, "LSB")
self.button_2 = wx.Button(self, ID_BUTTON_2, "USB")
self.button_3 = wx.Button(self, ID_BUTTON_3, "AM")
self.button_4 = wx.Button(self, ID_BUTTON_4, "CW")
self.button_5 = wx.ToggleButton(self, ID_BUTTON_5, "Upper")
self.slider_1 = wx.Slider(self, ID_SLIDER_1, 0, -15799, 15799, style=wx.SL_HORIZONTAL | wx.SL_LABELS)
self.button_6 = wx.ToggleButton(self, ID_BUTTON_6, "Lower")
self.slider_2 = wx.Slider(self, ID_SLIDER_2, 0, -15799, 15799, style=wx.SL_HORIZONTAL | wx.SL_LABELS)
self.panel_5 = wx.Panel(self, -1)
self.label_1 = wx.StaticText(self, -1, " Band\nCenter")
self.text_ctrl_1 = wx.TextCtrl(self, ID_TEXT_1, "")
self.panel_6 = wx.Panel(self, -1)
self.panel_7 = wx.Panel(self, -1)
self.panel_2 = wx.Panel(self, -1)
self.button_7 = wx.ToggleButton(self, ID_BUTTON_7, "Freq")
self.slider_3 = wx.Slider(self, ID_SLIDER_3, 3000, 0, 6000)
self.spin_ctrl_1 = wx.SpinCtrl(self, ID_SPIN_1, "", min=0, max=100)
self.button_8 = wx.ToggleButton(self, ID_BUTTON_8, "Vol")
self.slider_4 = wx.Slider(self, ID_SLIDER_4, 0, 0, 500)
self.slider_5 = wx.Slider(self, ID_SLIDER_5, 0, 0, 20)
self.button_9 = wx.ToggleButton(self, ID_BUTTON_9, "Time")
self.button_11 = wx.Button(self, ID_BUTTON_11, "Rew")
self.button_10 = wx.Button(self, ID_BUTTON_10, "Fwd")
self.panel_3 = wx.Panel(self, -1)
self.label_2 = wx.StaticText(self, -1, "PGA ")
self.panel_4 = wx.Panel(self, -1)
self.panel_8 = wx.Panel(self, -1)
self.panel_9 = wx.Panel(self, -1)
self.label_3 = wx.StaticText(self, -1, "AM Sync\nCarrier")
self.slider_6 = wx.Slider(self, ID_SLIDER_6, 50, 0, 200, style=wx.SL_HORIZONTAL | wx.SL_LABELS)
self.label_4 = wx.StaticText(self, -1, "Antenna Tune")
self.slider_7 = wx.Slider(self, ID_SLIDER_7, 1575, 950, 2200, style=wx.SL_HORIZONTAL | wx.SL_LABELS)
self.panel_10 = wx.Panel(self, -1)
self.button_12 = wx.ToggleButton(self, ID_BUTTON_12, "Auto Tune")
self.button_13 = wx.Button(self, ID_BUTTON_13, "Calibrate")
self.button_14 = wx.Button(self, ID_BUTTON_14, "Reset")
self.panel_11 = wx.Panel(self, -1)
self.panel_12 = wx.Panel(self, -1)
self.__set_properties()
self.__do_layout()
# end wxGlade
parser = OptionParser(option_class=eng_option)
parser.add_option(
"-c", "--ddc-freq", type="eng_float", default=3.9e6, help="set Rx DDC frequency to FREQ", metavar="FREQ"
)
parser.add_option("-a", "--audio_file", default="", help="audio output file", metavar="FILE")
parser.add_option("-r", "--radio_file", default="", help="radio output file", metavar="FILE")
parser.add_option("-i", "--input_file", default="", help="radio input file", metavar="FILE")
parser.add_option("-d", "--decim", type="int", default=250, help="USRP decimation")
parser.add_option(
"-R",
"--rx-subdev-spec",
type="subdev",
default=None,
help="select USRP Rx side A or B (default=first one with a daughterboard)",
)
(options, args) = parser.parse_args()
self.usrp_center = options.ddc_freq
usb_rate = 64e6 / options.decim
self.slider_range = usb_rate * 0.9375
self.f_lo = self.usrp_center - (self.slider_range / 2)
self.f_hi = self.usrp_center + (self.slider_range / 2)
self.af_sample_rate = 32000
fir_decim = long(usb_rate / self.af_sample_rate)
# data point arrays for antenna tuner
self.xdata = []
self.ydata = []
self.tb = gr.top_block()
# radio variables, initial conditions
self.frequency = self.usrp_center
# these map the frequency slider (0-6000) to the actual range
self.f_slider_offset = self.f_lo
self.f_slider_scale = 10000 / options.decim
self.spin_ctrl_1.SetRange(self.f_lo, self.f_hi)
self.text_ctrl_1.SetValue(str(int(self.usrp_center)))
self.slider_5.SetValue(0)
self.AM_mode = False
self.slider_3.SetValue((self.frequency - self.f_slider_offset) / self.f_slider_scale)
self.spin_ctrl_1.SetValue(int(self.frequency))
POWERMATE = True
try:
self.pm = powermate.powermate(self)
except:
sys.stderr.write("Unable to find PowerMate or Contour Shuttle\n")
POWERMATE = False
if POWERMATE:
powermate.EVT_POWERMATE_ROTATE(self, self.on_rotate)
powermate.EVT_POWERMATE_BUTTON(self, self.on_pmButton)
self.active_button = 7
# command line options
if options.audio_file == "":
SAVE_AUDIO_TO_FILE = False
else:
SAVE_AUDIO_TO_FILE = True
if options.radio_file == "":
SAVE_RADIO_TO_FILE = False
else:
SAVE_RADIO_TO_FILE = True
if options.input_file == "":
self.PLAY_FROM_USRP = True
else:
self.PLAY_FROM_USRP = False
if self.PLAY_FROM_USRP:
self.src = usrp.source_s(decim_rate=options.decim)
if options.rx_subdev_spec is None:
options.rx_subdev_spec = pick_subdevice(self.src)
self.src.set_mux(usrp.determine_rx_mux_value(self.src, options.rx_subdev_spec))
self.subdev = usrp.selected_subdev(self.src, options.rx_subdev_spec)
self.src.tune(0, self.subdev, self.usrp_center)
self.tune_offset = 0 # -self.usrp_center - self.src.rx_freq(0)
else:
self.src = gr.file_source(gr.sizeof_short, options.input_file)
self.tune_offset = 2200 # 2200 works for 3.5-4Mhz band
# save radio data to a file
if SAVE_RADIO_TO_FILE:
file = gr.file_sink(gr.sizeof_short, options.radio_file)
self.tb.connect(self.src, file)
# 2nd DDC
xlate_taps = gr.firdes.low_pass(1.0, usb_rate, 16e3, 4e3, gr.firdes.WIN_HAMMING)
self.xlate = gr.freq_xlating_fir_filter_ccf(fir_decim, xlate_taps, self.tune_offset, usb_rate)
# convert rf data in interleaved short int form to complex
s2ss = gr.stream_to_streams(gr.sizeof_short, 2)
s2f1 = gr.short_to_float()
s2f2 = gr.short_to_float()
src_f2c = gr.float_to_complex()
self.tb.connect(self.src, s2ss)
self.tb.connect((s2ss, 0), s2f1)
self.tb.connect((s2ss, 1), s2f2)
self.tb.connect(s2f1, (src_f2c, 0))
self.tb.connect(s2f2, (src_f2c, 1))
# Complex Audio filter
audio_coeffs = gr.firdes.complex_band_pass(
1.0, # gain
self.af_sample_rate, # sample rate
-3000, # low cutoff
0, # high cutoff
100, # transition
gr.firdes.WIN_HAMMING,
) # window
self.slider_1.SetValue(0)
self.slider_2.SetValue(-3000)
self.audio_filter = gr.fir_filter_ccc(1, audio_coeffs)
# Main +/- 16Khz spectrum display
self.fft = fftsink2.fft_sink_c(
self.panel_2, fft_size=512, sample_rate=self.af_sample_rate, average=True, size=(640, 240)
)
# AM Sync carrier
if AM_SYNC_DISPLAY:
self.fft2 = fftsink.fft_sink_c(
self.tb,
self.panel_9,
y_per_div=20,
fft_size=512,
sample_rate=self.af_sample_rate,
average=True,
size=(640, 240),
)
c2f = gr.complex_to_float()
# AM branch
self.sel_am = gr.multiply_const_cc(0)
# the following frequencies turn out to be in radians/sample
# gr.pll_refout_cc(alpha,beta,min_freq,max_freq)
# suggested alpha = X, beta = .25 * X * X
pll = gr.pll_refout_cc(
0.5, 0.0625, (2.0 * math.pi * 7.5e3 / self.af_sample_rate), (2.0 * math.pi * 6.5e3 / self.af_sample_rate)
)
self.pll_carrier_scale = gr.multiply_const_cc(complex(10, 0))
am_det = gr.multiply_cc()
# these are for converting +7.5kHz to -7.5kHz
# for some reason gr.conjugate_cc() adds noise ??
c2f2 = gr.complex_to_float()
c2f3 = gr.complex_to_float()
f2c = gr.float_to_complex()
phaser1 = gr.multiply_const_ff(1)
phaser2 = gr.multiply_const_ff(-1)
# filter for pll generated carrier
pll_carrier_coeffs = gr.firdes.complex_band_pass(
2.0, # gain
self.af_sample_rate, # sample rate
7400, # low cutoff
7600, # high cutoff
100, # transition
gr.firdes.WIN_HAMMING,
) # window
self.pll_carrier_filter = gr.fir_filter_ccc(1, pll_carrier_coeffs)
self.sel_sb = gr.multiply_const_ff(1)
combine = gr.add_ff()
# AGC
sqr1 = gr.multiply_ff()
intr = gr.iir_filter_ffd([0.004, 0], [0, 0.999])
offset = gr.add_const_ff(1)
agc = gr.divide_ff()
self.scale = gr.multiply_const_ff(0.00001)
dst = audio.sink(long(self.af_sample_rate))
self.tb.connect(src_f2c, self.xlate, self.fft)
self.tb.connect(self.xlate, self.audio_filter, self.sel_am, (am_det, 0))
self.tb.connect(self.sel_am, pll, self.pll_carrier_scale, self.pll_carrier_filter, c2f3)
self.tb.connect((c2f3, 0), phaser1, (f2c, 0))
self.tb.connect((c2f3, 1), phaser2, (f2c, 1))
self.tb.connect(f2c, (am_det, 1))
self.tb.connect(am_det, c2f2, (combine, 0))
self.tb.connect(self.audio_filter, c2f, self.sel_sb, (combine, 1))
if AM_SYNC_DISPLAY:
self.tb.connect(self.pll_carrier_filter, self.fft2)
self.tb.connect(combine, self.scale)
self.tb.connect(self.scale, (sqr1, 0))
self.tb.connect(self.scale, (sqr1, 1))
self.tb.connect(sqr1, intr, offset, (agc, 1))
self.tb.connect(self.scale, (agc, 0))
self.tb.connect(agc, dst)
if SAVE_AUDIO_TO_FILE:
f_out = gr.file_sink(gr.sizeof_short, options.audio_file)
sc1 = gr.multiply_const_ff(64000)
f2s1 = gr.float_to_short()
self.tb.connect(agc, sc1, f2s1, f_out)
self.tb.start()
# for mouse position reporting on fft display
em.eventManager.Register(self.Mouse, wx.EVT_MOTION, self.fft.win)
# and left click to re-tune
em.eventManager.Register(self.Click, wx.EVT_LEFT_DOWN, self.fft.win)
# start a timer to check for web commands
if WEB_CONTROL:
self.timer = UpdateTimer(self, 1000) # every 1000 mSec, 1 Sec
wx.EVT_BUTTON(self, ID_BUTTON_1, self.set_lsb)
wx.EVT_BUTTON(self, ID_BUTTON_2, self.set_usb)
wx.EVT_BUTTON(self, ID_BUTTON_3, self.set_am)
wx.EVT_BUTTON(self, ID_BUTTON_4, self.set_cw)
wx.EVT_BUTTON(self, ID_BUTTON_10, self.fwd)
wx.EVT_BUTTON(self, ID_BUTTON_11, self.rew)
wx.EVT_BUTTON(self, ID_BUTTON_13, self.AT_calibrate)
wx.EVT_BUTTON(self, ID_BUTTON_14, self.AT_reset)
wx.EVT_TOGGLEBUTTON(self, ID_BUTTON_5, self.on_button)
wx.EVT_TOGGLEBUTTON(self, ID_BUTTON_6, self.on_button)
wx.EVT_TOGGLEBUTTON(self, ID_BUTTON_7, self.on_button)
wx.EVT_TOGGLEBUTTON(self, ID_BUTTON_8, self.on_button)
wx.EVT_TOGGLEBUTTON(self, ID_BUTTON_9, self.on_button)
wx.EVT_SLIDER(self, ID_SLIDER_1, self.set_filter)
wx.EVT_SLIDER(self, ID_SLIDER_2, self.set_filter)
wx.EVT_SLIDER(self, ID_SLIDER_3, self.slide_tune)
wx.EVT_SLIDER(self, ID_SLIDER_4, self.set_volume)
wx.EVT_SLIDER(self, ID_SLIDER_5, self.set_pga)
wx.EVT_SLIDER(self, ID_SLIDER_6, self.am_carrier)
wx.EVT_SLIDER(self, ID_SLIDER_7, self.antenna_tune)
wx.EVT_SPINCTRL(self, ID_SPIN_1, self.spin_tune)
wx.EVT_MENU(self, ID_EXIT, self.TimeToQuit)
def __init__(self, modulator, demodulator, rx_callback, options):
gr.top_block.__init__(self)
sense_symbol_rate=2500000
sense_samples_per_symbol=2
sense_rx_freq=2500000000
sense_rx_gain=20
options.chbw_factor=1
global bandchoose
#args = demodulator.extract_kwargs_from_options(options)
self.sensesource=uhd_receiver(options.args, sense_symbol_rate,
sense_samples_per_symbol,
sense_rx_freq, sense_rx_gain,
options.spec, options.antenna,
options.verbose)
if(options.tx_freq is not None):
# Work-around to get the modulation's bits_per_symbol
args = modulator.extract_kwargs_from_options(options)
symbol_rate = options.bitrate / modulator(**args).bits_per_symbol()
fa = samp_rate/4 #1000000
self.sink = uhd_transmitter(options.args, symbol_rate,
options.samples_per_symbol,
options.tx_freq, options.tx_gain,
options.spec, options.antenna,
options.verbose)
options.samples_per_symbol = self.sink._sps
elif(options.to_file is not None):
sys.stderr.write(("Saving samples to '%s'.\n\n" % (options.to_file)))
self.sink = gr.file_sink(gr.sizeof_gr_complex, options.to_file)
else:
sys.stderr.write("No sink defined, dumping samples to null sink.\n\n")
self.sink = gr.null_sink(gr.sizeof_gr_complex)
self.txgate = gr.copy(gr.sizeof_gr_complex)
self.sensegate = gr.copy(gr.sizeof_gr_complex)
#self.msgq = gr.msg_queue()
# do this after for any adjustments to the options that may
# occur in the sinks (specifically the UHD sink)
# do sense
self.sensepath = sensing_path(options)
self.tx_enabled = True
self.sense_flag=False
self.connect(self.sensesource, self.sensepath)
# do this after for any adjustments to the options that may
# occur in the sinks (specifically the UHD sink)
self.txpath1 = transmit_path(modulator, options)
self.txpath2 = transmit_path(modulator, options)
#self.connect(self.txpath, self.sink)
# Define the math operator blocks
# Generate exp(jw1t) and exp(-jw1t)
self.gr_multiply_xx_0 = gr.multiply_vff(1)
self.gr_float_to_complex_0_0 = gr.float_to_complex(1)
self.gr_float_to_complex_0 = gr.float_to_complex(1)
self.const_source_x_0 = gr.sig_source_f(0, gr.GR_CONST_WAVE, 0, 0, -1)
self.analog_sig_source_x_0_0 = gr.sig_source_f(samp_rate, gr.GR_SIN_WAVE, fa, 1, 0)
self.analog_sig_source_x_0 = gr.sig_source_f(samp_rate, gr.GR_COS_WAVE, fa, 1, 0)
# Combine signal from two subbands
self.gr_multiply_xx_1 = gr.multiply_vcc(1)
self.gr_multiply_xx_2 = gr.multiply_vcc(1)
self.gr_c2f_1 = gr.complex_to_float(1)
self.gr_c2f_2 = gr.complex_to_float(1)
self.gr_add_xx_re = gr.add_vff(1)
self.gr_add_xx_im = gr.add_vff(1)
self.gr_f2c = gr.float_to_complex(1)
self.gr_null_source_0 = gr.null_source(gr.sizeof_gr_complex*1)
# output from gr_float_to_complex_0_0 is exp(-jw1t)
# output from gr_float_to_complex_0 is exp(jw1t)
self.connect((self.gr_multiply_xx_0, 0), (self.gr_float_to_complex_0_0, 1))
self.connect((self.analog_sig_source_x_0, 0), (self.gr_float_to_complex_0_0, 0))
self.connect((self.analog_sig_source_x_0_0, 0), (self.gr_float_to_complex_0, 1))
self.connect((self.analog_sig_source_x_0, 0), (self.gr_float_to_complex_0, 0))
self.connect((self.analog_sig_source_x_0_0, 0), (self.gr_multiply_xx_0, 0))
self.connect((self.const_source_x_0, 0), (self.gr_multiply_xx_0, 1))
# txpath1 * exp(-jw1t)
#self.connect(self.txpath1, (self.gr_multiply_xx_1, 0))
self.connect((self.gr_float_to_complex_0_0, 0), (self.gr_multiply_xx_1, 1))
# txpath2 * exp(jw1t)
#self.connect(self.txpath2, (self.gr_multiply_xx_2, 0))
self.connect((self.gr_float_to_complex_0, 0), (self.gr_multiply_xx_2, 1))
if bandchoose == 0:
self.connect(self.txpath1, (self.gr_multiply_xx_1, 0))
self.connect(self.gr_null_source_0 , (self.gr_multiply_xx_2, 0))
elif bandchoose == 1:
self.connect(self.gr_null_source_0 , (self.gr_multiply_xx_1, 0))
self.connect(self.txpath2, (self.gr_multiply_xx_2, 0))
else:
self.connect(self.txpath1, (self.gr_multiply_xx_1, 0))
self.connect(self.txpath2, (self.gr_multiply_xx_2, 0))
self.connect((self.gr_multiply_xx_1, 0), self.gr_c2f_1)
self.connect((self.gr_multiply_xx_2, 0), self.gr_c2f_2)
self.connect((self.gr_c2f_1,0), (self.gr_add_xx_re,0))
self.connect((self.gr_c2f_2,0), (self.gr_add_xx_re,1))
self.connect((self.gr_c2f_1,1), (self.gr_add_xx_im,0))
self.connect((self.gr_c2f_2,1), (self.gr_add_xx_im,1))
self.connect(self.gr_add_xx_re, (self.gr_f2c,0))
self.connect(self.gr_add_xx_im, (self.gr_f2c,1))
self.connect(self.gr_f2c, self.sink)
def __init__(self):
gr.top_block.__init__(self)
parser = OptionParser(option_class=eng_option)
parser.add_option("-1", "--one-channel", action="store_true", default=False, help="software synthesized Q channel")
parser.add_option("-c", "--calibration", type="eng_float", default=0, help="freq offset")
parser.add_option("-d", "--debug", action="store_true", default=False, help="allow time at init to attach gdb")
parser.add_option("-C", "--costas-alpha", type="eng_float", default=0.125, help="Costas alpha")
parser.add_option("-g", "--gain", type="eng_float", default=1.0)
parser.add_option("-i", "--input-file", type="string", default="in.dat", help="specify the input file")
parser.add_option("-I", "--imbe", action="store_true", default=False, help="output IMBE codewords")
parser.add_option("-L", "--low-pass", type="eng_float", default=6.5e3, help="low pass cut-off", metavar="Hz")
parser.add_option("-o", "--output-file", type="string", default="out.dat", help="specify the output file")
parser.add_option("-p", "--polarity", action="store_true", default=False, help="use reversed polarity")
parser.add_option("-s", "--sample-rate", type="int", default=96000, help="input sample rate")
parser.add_option("-t", "--tone-detect", action="store_true", default=False, help="use experimental tone detect algorithm")
parser.add_option("-v", "--verbose", action="store_true", default=False, help="additional output")
(options, args) = parser.parse_args()
sample_rate = options.sample_rate
symbol_rate = 4800
samples_per_symbol = sample_rate // symbol_rate
IN = gr.file_source(gr.sizeof_gr_complex, options.input_file)
if options.one_channel:
C2F = gr.complex_to_float()
F2C = gr.float_to_complex()
# osc./mixer for mixing signal down to approx. zero IF
LO = gr.sig_source_c (sample_rate, gr.GR_COS_WAVE, options.calibration, 1.0, 0)
MIXER = gr.multiply_cc()
# get signal into normalized range (-1.0 - +1.0)
# FIXME: add AGC
AMP = gr.multiply_const_cc(options.gain)
lpf_taps = gr.firdes.low_pass(1.0, sample_rate, options.low_pass, options.low_pass * 0.1, gr.firdes.WIN_HANN)
decim_amt = 1
if options.tone_detect:
if sample_rate != 96000:
print "warning, only 96K has been tested."
print "other rates may require theta to be reviewed/adjusted."
step_size = 7.5e-8
theta = -4 # optimum timing sampling point
cic_length = 48
DEMOD = repeater.tdetect_cc(samples_per_symbol, step_size, theta, cic_length)
else:
# decim by 2 to get 48k rate
samples_per_symbol /= 2 # for DECIM
sample_rate /= 2 # for DECIM
decim_amt = 2
# create Gardner/Costas loop
# the loop will not work if the sample levels aren't normalized (above)
timing_error_gain = 0.025 # loop error gain
gain_omega = 0.25 * timing_error_gain * timing_error_gain
alpha = options.costas_alpha
beta = 0.125 * alpha * alpha
fmin = -0.025 # fmin and fmax are in radians/s
fmax = 0.025
DEMOD = repeater.gardner_costas_cc(samples_per_symbol, timing_error_gain, gain_omega, alpha, beta, fmax, fmin)
DECIM = gr.fir_filter_ccf (decim_amt, lpf_taps)
# probably too much phase noise etc to attempt coherent demodulation
# so we use differential
DIFF = gr.diff_phasor_cc()
# take angle of the phase difference (in radians)
TOFLOAT = gr.complex_to_arg()
# convert from radians such that signal is in [-3, -1, +1, +3]
RESCALE = gr.multiply_const_ff(1 / (pi / 4.0))
# optional polarity reversal (should be unnec. - now autodetected)
p = 1.0
if options.polarity:
p = -1.0
POLARITY = gr.multiply_const_ff(p)
# hard decision at specified points
levels = [-2.0, 0.0, 2.0, 4.0 ]
SLICER = repeater.fsk4_slicer_fb(levels)
# assemble received frames and route to Wireshark via UDP
hostname = "127.0.0.1"
port = 23456
debug = 0
if options.verbose:
debug = 255
do_imbe = False
if options.imbe:
do_imbe = True
do_output = True # enable block's output stream
do_msgq = False # msgq output not yet implemented
msgq = gr.msg_queue(2)
DECODER = repeater.p25_frame_assembler(hostname, port, debug, do_imbe, do_output, do_msgq, msgq)
OUT = gr.file_sink(gr.sizeof_char, options.output_file)
if options.one_channel:
self.connect(IN, C2F, F2C, (MIXER, 0))
else:
self.connect(IN, (MIXER, 0))
self.connect(LO, (MIXER, 1))
self.connect(MIXER, AMP, DECIM, DEMOD, DIFF, TOFLOAT, RESCALE, POLARITY, SLICER, DECODER, OUT)
if options.debug:
print 'Ready for GDB to attach (pid = %d)' % (os.getpid(),)
raw_input("Press 'Enter' to continue...")
def __init__(self, frame, panel, vbox, argv):
stdgui2.std_top_block.__init__(self, frame, panel, vbox, argv)
self.frame = frame
self.panel = panel
parser = OptionParser(option_class=eng_option)
#parser.add_option("-S", "--subdev", type="subdev", default=(0, None),
# help="select USRP Rx side A or B (default=A)")
parser.add_option(
"-d",
"--decim",
type="int",
default=128,
help="set fgpa decimation rate to DECIM [default=%default]")
parser.add_option("-f",
"--freq",
type="eng_float",
default=146.585e6,
help="set frequency to FREQ [default=%default])",
metavar="FREQ")
parser.add_option("-g",
"--gain",
type="eng_float",
default=20,
help="set gain in dB [default=%default]")
parser.add_option("-F",
"--filter",
action="store_true",
default=True,
help="Enable channel filter")
(options, args) = parser.parse_args()
if len(args) != 0:
parser.print_help()
raise SystemExit
nchan = 4
if options.filter:
sw_decim = 4
else:
sw_decim = 1
self.u = usrp.source_c(0,
options.decim,
fpga_filename="std_4rx_0tx.rbf")
if self.u.nddcs() < nchan:
sys.stderr.write(
'This code requires an FPGA build with %d DDCs. This FPGA has only %d.\n'
% (nchan, self.u.nddcs()))
raise SystemExit
if not self.u.set_nchannels(nchan):
sys.stderr.write('set_nchannels(%d) failed\n' % (nchan, ))
raise SystemExit
input_rate = self.u.adc_freq() / self.u.decim_rate()
print "USB data rate = %s" % (eng_notation.num_to_str(input_rate), )
print "Scope data rate = %s" % (eng_notation.num_to_str(
input_rate / sw_decim), )
self.subdev = self.u.db(0) + self.u.db(1)
if (len(self.subdev) < 4
or self.u.db(0, 0).dbid() != usrp_dbid.BASIC_RX
or self.u.db(0, 0).dbid() != usrp_dbid.BASIC_RX):
sys.stderr.write(
'This code requires a Basic Rx board on Sides A & B\n')
sys.exit(1)
self.u.set_mux(gru.hexint(0xf3f2f1f0))
# deinterleave four channels from FPGA
di = gr.deinterleave(gr.sizeof_gr_complex)
self.connect(self.u, di)
# our destination (8 float inputs)
self.scope = scopesink2.scope_sink_f(panel,
sample_rate=input_rate / sw_decim,
num_inputs=2 * nchan)
# taps for channel filter
chan_filt_coeffs = optfir.low_pass(
1, # gain
input_rate, # sampling rate
80e3, # passband cutoff
115e3, # stopband cutoff
0.1, # passband ripple
60) # stopband attenuation
#print len(chan_filt_coeffs)
# bust the deinterleaved complex channels into floats
for i in range(nchan):
if options.filter:
chan_filt = gr.fir_filter_ccf(sw_decim, chan_filt_coeffs)
c2f = gr.complex_to_float()
self.connect((di, i), chan_filt, c2f)
else:
c2f = gr.complex_to_float()
self.connect((di, i), c2f)
self.connect((c2f, 0), (self.scope, 2 * i + 0))
self.connect((c2f, 1), (self.scope, 2 * i + 1))
self._build_gui(vbox)
self.set_gain(options.gain)
self.set_freq(options.freq)
def __init__(self): grc_wxgui.top_block_gui.__init__(self, title="writeToFile") _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png" self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY)) ################################################## # Variables ################################################## self.variable_function_probe_1 = variable_function_probe_1 = 0 self.variable_function_probe_0 = variable_function_probe_0 = 0 self.samp_rate = samp_rate = 32000 self.receiveFrequency = receiveFrequency = 900000000 ################################################## # Blocks ################################################## self.gr_probe_signal_f_1 = gr.probe_signal_f() self.gr_probe_signal_f_0 = gr.probe_signal_f() self.wxgui_scopesink2_0 = scopesink2.scope_sink_c( self.GetWin(), title="Scope Plot", sample_rate=samp_rate, 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) def _variable_function_probe_1_probe(): while True: val = self.gr_probe_signal_f_1.level() try: self.set_variable_function_probe_1(val) except AttributeError, e: pass # set sample rate time.sleep(1.0/(70)) # in a first test with sample rate 1000 Hz about 15 values in a row have been identical _variable_function_probe_1_thread = threading.Thread(target=_variable_function_probe_1_probe) _variable_function_probe_1_thread.daemon = True _variable_function_probe_1_thread.start() def _variable_function_probe_0_probe(): while True: val = self.gr_probe_signal_f_0.level() try: self.set_variable_function_probe_0(val) except AttributeError, e: pass # set sample rate time.sleep(1.0/(70)) # in a first test with sample rate 1000 Hz about 15 values in a row have been identical _variable_function_probe_0_thread = threading.Thread(target=_variable_function_probe_0_probe) _variable_function_probe_0_thread.daemon = True _variable_function_probe_0_thread.start() 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(receiveFrequency, 0) self.uhd_usrp_source_0.set_gain(30, 0) self.gr_complex_to_float_0 = gr.complex_to_float(1) ################################################## # Connections ################################################## self.connect((self.uhd_usrp_source_0, 0), (self.wxgui_scopesink2_0, 0)) self.connect((self.uhd_usrp_source_0, 0), (self.gr_complex_to_float_0, 0)) self.connect((self.gr_complex_to_float_0, 0), (self.gr_probe_signal_f_0, 0)) self.connect((self.gr_complex_to_float_0, 1), (self.gr_probe_signal_f_1, 0))
def __init__(
self,
parent,
title='',
sample_rate=1,
size=scope_window.DEFAULT_WIN_SIZE,
v_scale=0,
t_scale=0,
v_offset=0,
xy_mode=False,
ac_couple=False,
num_inputs=1,
trig_mode=scope_window.DEFAULT_TRIG_MODE,
y_axis_label='Counts',
frame_rate=scope_window.DEFAULT_FRAME_RATE,
use_persistence=False,
persist_alpha=None,
**kwargs #do not end with a comma
):
#ensure analog alpha
if persist_alpha is None:
actual_frame_rate = float(frame_rate)
analog_cutoff_freq = 0.5 # Hertz
#calculate alpha from wanted cutoff freq
persist_alpha = 1.0 - math.exp(
-2.0 * math.pi * analog_cutoff_freq / actual_frame_rate)
if not t_scale: t_scale = 10.0 / sample_rate
#init
gr.hier_block2.__init__(
self,
"scope_sink",
gr.io_signature(num_inputs, num_inputs, self._item_size),
gr.io_signature(0, 0, 0),
)
#scope
msgq = gr.msg_queue(2)
scope = gr.oscope_sink_f(sample_rate, msgq)
#controller
self.controller = pubsub()
self.controller.subscribe(SAMPLE_RATE_KEY, scope.set_sample_rate)
self.controller.publish(SAMPLE_RATE_KEY, scope.sample_rate)
self.controller.subscribe(DECIMATION_KEY, scope.set_decimation_count)
self.controller.publish(DECIMATION_KEY, scope.get_decimation_count)
self.controller.subscribe(TRIGGER_LEVEL_KEY, scope.set_trigger_level)
self.controller.publish(TRIGGER_LEVEL_KEY, scope.get_trigger_level)
self.controller.subscribe(TRIGGER_MODE_KEY, scope.set_trigger_mode)
self.controller.publish(TRIGGER_MODE_KEY, scope.get_trigger_mode)
self.controller.subscribe(TRIGGER_SLOPE_KEY, scope.set_trigger_slope)
self.controller.publish(TRIGGER_SLOPE_KEY, scope.get_trigger_slope)
self.controller.subscribe(TRIGGER_CHANNEL_KEY,
scope.set_trigger_channel)
self.controller.publish(TRIGGER_CHANNEL_KEY, scope.get_trigger_channel)
actual_num_inputs = self._real and num_inputs or num_inputs * 2
#init ac couple
for i in range(actual_num_inputs):
self.controller[common.index_key(AC_COUPLE_KEY, i)] = ac_couple
#start input watcher
common.input_watcher(msgq, self.controller, MSG_KEY)
#create window
self.win = scope_window.scope_window(
parent=parent,
controller=self.controller,
size=size,
title=title,
frame_rate=frame_rate,
num_inputs=actual_num_inputs,
sample_rate_key=SAMPLE_RATE_KEY,
t_scale=t_scale,
v_scale=v_scale,
v_offset=v_offset,
xy_mode=xy_mode,
trig_mode=trig_mode,
y_axis_label=y_axis_label,
ac_couple_key=AC_COUPLE_KEY,
trigger_level_key=TRIGGER_LEVEL_KEY,
trigger_mode_key=TRIGGER_MODE_KEY,
trigger_slope_key=TRIGGER_SLOPE_KEY,
trigger_channel_key=TRIGGER_CHANNEL_KEY,
decimation_key=DECIMATION_KEY,
msg_key=MSG_KEY,
use_persistence=use_persistence,
persist_alpha=persist_alpha,
)
common.register_access_methods(self, self.win)
#connect
if self._real:
for i in range(num_inputs):
self.wxgui_connect(
(self, i),
ac_couple_block(self.controller,
common.index_key(AC_COUPLE_KEY, i),
SAMPLE_RATE_KEY),
(scope, i),
)
else:
for i in range(num_inputs):
c2f = gr.complex_to_float()
self.wxgui_connect((self, i), c2f)
for j in range(2):
self.connect(
(c2f, j),
ac_couple_block(
self.controller,
common.index_key(AC_COUPLE_KEY, 2 * i + j),
SAMPLE_RATE_KEY),
(scope, 2 * i + j),
)
def __init__(self):
gr.top_block.__init__(self)
parser = OptionParser(option_class=eng_option)
parser.add_option("-1",
"--one-channel",
action="store_true",
default=False,
help="software synthesized Q channel")
parser.add_option("-a",
"--agc",
action="store_true",
default=False,
help="automatic gain control (overrides --gain)")
parser.add_option("-c",
"--calibration",
type="eng_float",
default=0,
help="freq offset")
parser.add_option("-d",
"--debug",
action="store_true",
default=False,
help="allow time at init to attach gdb")
parser.add_option("-C",
"--costas-alpha",
type="eng_float",
default=0.125,
help="Costas alpha")
parser.add_option("-g", "--gain", type="eng_float", default=1.0)
parser.add_option("-i",
"--input-file",
type="string",
default="in.dat",
help="specify the input file")
parser.add_option("-I",
"--imbe",
action="store_true",
default=False,
help="output IMBE codewords")
parser.add_option("-L",
"--low-pass",
type="eng_float",
default=6.5e3,
help="low pass cut-off",
metavar="Hz")
parser.add_option("-o",
"--output-file",
type="string",
default="out.dat",
help="specify the output file")
parser.add_option("-p",
"--polarity",
action="store_true",
default=False,
help="use reversed polarity")
parser.add_option("-r",
"--raw-symbols",
type="string",
default=None,
help="dump decoded symbols to file")
parser.add_option("-s",
"--sample-rate",
type="int",
default=96000,
help="input sample rate")
parser.add_option("-t",
"--tone-detect",
action="store_true",
default=False,
help="use experimental tone detect algorithm")
parser.add_option("-v",
"--verbose",
action="store_true",
default=False,
help="additional output")
parser.add_option("-6",
"--k6k",
action="store_true",
default=False,
help="use 6K symbol rate")
(options, args) = parser.parse_args()
sample_rate = options.sample_rate
if options.k6k:
symbol_rate = 6000
else:
symbol_rate = 4800
samples_per_symbol = sample_rate // symbol_rate
IN = gr.file_source(gr.sizeof_gr_complex, options.input_file)
if options.one_channel:
C2F = gr.complex_to_float()
F2C = gr.float_to_complex()
# osc./mixer for mixing signal down to approx. zero IF
LO = gr.sig_source_c(sample_rate, gr.GR_COS_WAVE, options.calibration,
1.0, 0)
MIXER = gr.multiply_cc()
# get signal into normalized range (-1.0 - +1.0)
if options.agc:
AMP = gr.feedforward_agc_cc(16, 1.0)
else:
AMP = gr.multiply_const_cc(options.gain)
lpf_taps = gr.firdes.low_pass(1.0, sample_rate, options.low_pass,
options.low_pass * 0.1,
gr.firdes.WIN_HANN)
decim_amt = 1
if options.tone_detect:
if sample_rate != 96000:
print "warning, only 96K has been tested."
print "other rates may require theta to be reviewed/adjusted."
step_size = 7.5e-8
theta = -4 # optimum timing sampling point
cic_length = 48
DEMOD = repeater.tdetect_cc(samples_per_symbol, step_size, theta,
cic_length)
else:
# decim by 2 to get 48k rate
samples_per_symbol /= 2 # for DECIM
sample_rate /= 2 # for DECIM
decim_amt = 2
# create Gardner/Costas loop
# the loop will not work if the sample levels aren't normalized (above)
timing_error_gain = 0.025 # loop error gain
gain_omega = 0.25 * timing_error_gain * timing_error_gain
alpha = options.costas_alpha
beta = 0.125 * alpha * alpha
fmin = -0.025 # fmin and fmax are in radians/s
fmax = 0.025
DEMOD = repeater.gardner_costas_cc(samples_per_symbol,
timing_error_gain, gain_omega,
alpha, beta, fmax, fmin)
DECIM = gr.fir_filter_ccf(decim_amt, lpf_taps)
# probably too much phase noise etc to attempt coherent demodulation
# so we use differential
DIFF = gr.diff_phasor_cc()
# take angle of the phase difference (in radians)
TOFLOAT = gr.complex_to_arg()
# convert from radians such that signal is in [-3, -1, +1, +3]
RESCALE = gr.multiply_const_ff(1 / (pi / 4.0))
# optional polarity reversal (should be unnec. - now autodetected)
p = 1.0
if options.polarity:
p = -1.0
POLARITY = gr.multiply_const_ff(p)
# hard decision at specified points
levels = [-2.0, 0.0, 2.0, 4.0]
SLICER = repeater.fsk4_slicer_fb(levels)
# assemble received frames and route to Wireshark via UDP
hostname = "127.0.0.1"
port = 23456
debug = 0
if options.verbose:
debug = 255
do_imbe = False
if options.imbe:
do_imbe = True
do_output = True # enable block's output stream
do_msgq = False # msgq output not yet implemented
msgq = gr.msg_queue(2)
DECODER = repeater.p25_frame_assembler(hostname, port, debug, do_imbe,
do_output, do_msgq, msgq)
OUT = gr.file_sink(gr.sizeof_char, options.output_file)
if options.one_channel:
self.connect(IN, C2F, F2C, (MIXER, 0))
else:
self.connect(IN, (MIXER, 0))
self.connect(LO, (MIXER, 1))
self.connect(MIXER, AMP, DECIM, DEMOD, DIFF, TOFLOAT, RESCALE,
POLARITY, SLICER, DECODER, OUT)
if options.raw_symbols:
SINKC = gr.file_sink(gr.sizeof_char, options.raw_symbols)
self.connect(SLICER, SINKC)
if options.debug:
print 'Ready for GDB to attach (pid = %d)' % (os.getpid(), )
raw_input("Press 'Enter' to continue...")
def graph(args):
nargs = len(args)
if nargs == 2:
infile = args[0]
outfile = args[1]
else:
raise ValueError('usage: interp.py input_file output_file\n')
tb = gr.top_block()
# Convert to a from shorts to a stream of complex numbers.
srcf = gr.file_source(gr.sizeof_short, infile)
s2ss = gr.stream_to_streams(gr.sizeof_short, 2)
s2f1 = gr.short_to_float()
s2f2 = gr.short_to_float()
src0 = gr.float_to_complex()
tb.connect(srcf, s2ss)
tb.connect((s2ss, 0), s2f1, (src0, 0))
tb.connect((s2ss, 1), s2f2, (src0, 1))
# Low pass filter it and increase sample rate by a factor of 3.
lp_coeffs = gr.firdes.low_pass(3, 19.2e6, 3.2e6, .5e6,
gr.firdes.WIN_HAMMING)
lp = gr.interp_fir_filter_ccf(3, lp_coeffs)
tb.connect(src0, lp)
# Upconvert it.
duc_coeffs = gr.firdes.low_pass(1, 19.2e6, 9e6, 1e6, gr.firdes.WIN_HAMMING)
duc = gr.freq_xlating_fir_filter_ccf(1, duc_coeffs, 5.75e6, 19.2e6)
# Discard the imaginary component.
c2f = gr.complex_to_float()
tb.connect(lp, duc, c2f)
# Frequency Phase Lock Loop
input_rate = 19.2e6
IF_freq = 5.75e6
# 1/2 as wide because we're designing lp filter
symbol_rate = atsc.ATSC_SYMBOL_RATE / 2.
NTAPS = 279
tt = gr.firdes.root_raised_cosine(1.0, input_rate, symbol_rate, .115,
NTAPS)
# heterodyne the low pass coefficients up to the specified bandpass
# center frequency. Note that when we do this, the filter bandwidth
# is effectively twice the low pass (2.69 * 2 = 5.38) and hence
# matches the diagram in the ATSC spec.
arg = 2. * math.pi * IF_freq / input_rate
t = []
for i in range(len(tt)):
t += [tt[i] * 2. * math.cos(arg * i)]
rrc = gr.fir_filter_fff(1, t)
fpll = atsc.fpll()
pilot_freq = IF_freq - 3e6 + 0.31e6
lower_edge = 6e6 - 0.31e6
upper_edge = IF_freq - 3e6 + pilot_freq
transition_width = upper_edge - lower_edge
lp_coeffs = gr.firdes.low_pass(1.0, input_rate,
(lower_edge + upper_edge) * 0.5,
transition_width, gr.firdes.WIN_HAMMING)
lp_filter = gr.fir_filter_fff(1, lp_coeffs)
alpha = 1e-5
iir = gr.single_pole_iir_filter_ff(alpha)
remove_dc = gr.sub_ff()
tb.connect(c2f, fpll, lp_filter)
tb.connect(lp_filter, iir)
tb.connect(lp_filter, (remove_dc, 0))
tb.connect(iir, (remove_dc, 1))
# Bit Timing Loop, Field Sync Checker and Equalizer
btl = atsc.bit_timing_loop()
fsc = atsc.fs_checker()
eq = atsc.equalizer()
fsd = atsc.field_sync_demux()
tb.connect(remove_dc, btl)
tb.connect((btl, 0), (fsc, 0), (eq, 0), (fsd, 0))
tb.connect((btl, 1), (fsc, 1), (eq, 1), (fsd, 1))
# Viterbi
viterbi = atsc.viterbi_decoder()
deinter = atsc.deinterleaver()
rs_dec = atsc.rs_decoder()
derand = atsc.derandomizer()
depad = atsc.depad()
dst = gr.file_sink(gr.sizeof_char, outfile)
tb.connect(fsd, viterbi, deinter, rs_dec, derand, depad, dst)
dst2 = gr.file_sink(gr.sizeof_gr_complex, "atsc_complex.data")
tb.connect(src0, dst2)
tb.run()
def complex_to_float(N):
op = gr.complex_to_float()
tb = helper(N, op, gr.sizeof_gr_complex, gr.sizeof_float, 1, 2)
return tb
def __init__(self, frame, panel, vbox, argv):
stdgui2.std_top_block.__init__(self, frame, panel, vbox, argv)
self.frame = frame
self.panel = panel
parser = OptionParser(option_class=eng_option)
parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=(0, 0),
help="select USRP Rx side A or B (default=A)")
parser.add_option("-d", "--decim", type="int", default=16,
help="set fgpa decimation rate to DECIM [default=%default]")
parser.add_option("-f", "--freq", type="eng_float", default=None,
help="set frequency to FREQ", metavar="FREQ")
parser.add_option("-Q", "--observing", type="eng_float", default=0.0,
help="set observing frequency to FREQ")
parser.add_option("-a", "--avg", type="eng_float", default=1.0,
help="set spectral averaging alpha")
parser.add_option("-V", "--favg", type="eng_float", default=2.0,
help="set folder averaging alpha")
parser.add_option("-g", "--gain", type="eng_float", default=None,
help="set gain in dB (default is midpoint)")
parser.add_option("-l", "--reflevel", type="eng_float", default=30.0,
help="Set pulse display reference level")
parser.add_option("-L", "--lowest", type="eng_float", default=1.5,
help="Lowest valid frequency bin")
parser.add_option("-e", "--longitude", type="eng_float", default=-76.02, help="Set Observer Longitude")
parser.add_option("-c", "--latitude", type="eng_float", default=44.85, help="Set Observer Latitude")
parser.add_option("-F", "--fft_size", type="eng_float", default=1024, help="Size of FFT")
parser.add_option ("-t", "--threshold", type="eng_float", default=2.5, help="pulsar threshold")
parser.add_option("-p", "--lowpass", type="eng_float", default=100, help="Pulse spectra cutoff freq")
parser.add_option("-P", "--prefix", default="./", help="File prefix")
parser.add_option("-u", "--pulsefreq", type="eng_float", default=0.748, help="Observation pulse rate")
parser.add_option("-D", "--dm", type="eng_float", default=1.0e-5, help="Dispersion Measure")
parser.add_option("-O", "--doppler", type="eng_float", default=1.0, help="Doppler ratio")
parser.add_option("-B", "--divbase", type="eng_float", default=20, help="Y/Div menu base")
parser.add_option("-I", "--division", type="eng_float", default=100, help="Y/Div")
parser.add_option("-A", "--audio_source", default="plughw:0,0", help="Audio input device spec")
parser.add_option("-N", "--num_pulses", default=1, type="eng_float", help="Number of display pulses")
(options, args) = parser.parse_args()
if len(args) != 0:
parser.print_help()
sys.exit(1)
self.show_debug_info = True
self.reflevel = options.reflevel
self.divbase = options.divbase
self.division = options.division
self.audiodev = options.audio_source
self.mult = int(options.num_pulses)
# Low-pass cutoff for post-detector filter
# Set to 100Hz usually, since lots of pulsars fit in this
# range
self.lowpass = options.lowpass
# What is lowest valid frequency bin in post-detector FFT?
# There's some pollution very close to DC
self.lowest_freq = options.lowest
# What (dB) threshold to use in determining spectral candidates
self.threshold = options.threshold
# Filename prefix for recording file
self.prefix = options.prefix
# Dispersion Measure (DM)
self.dm = options.dm
# Doppler shift, as a ratio
# 1.0 == no doppler shift
# 1.005 == a little negative shift
# 0.995 == a little positive shift
self.doppler = options.doppler
#
# Input frequency and observing frequency--not necessarily the
# same thing, if we're looking at the IF of some downconverter
# that's ahead of the USRP and daughtercard. This distinction
# is important in computing the correct de-dispersion filter.
#
self.frequency = options.freq
if options.observing <= 0:
self.observing_freq = options.freq
else:
self.observing_freq = options.observing
# build the graph
self.u = usrp.source_c(decim_rate=options.decim)
self.u.set_mux(usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec))
#
# Recording file, in case we ever need to record baseband data
#
self.recording = gr.file_sink(gr.sizeof_char, "/dev/null")
self.recording_state = False
self.pulse_recording = gr.file_sink(gr.sizeof_short, "/dev/null")
self.pulse_recording_state = False
#
# We come up with recording turned off, but the user may
# request recording later on
self.recording.close()
self.pulse_recording.close()
#
# Need these two for converting 12-bit baseband signals to 8-bit
#
self.tofloat = gr.complex_to_float()
self.tochar = gr.float_to_char()
# Need this for recording pulses (post-detector)
self.toshort = gr.float_to_short()
#
# The spectral measurer sets this when it has a valid
# average spectral peak-to-peak distance
# We can then use this to program the parameters for the epoch folder
#
# We set a sentimental value here
self.pulse_freq = options.pulsefreq
# Folder runs at this raw sample rate
self.folder_input_rate = 20000
# Each pulse in the epoch folder is sampled at 128 times the nominal
# pulse rate
self.folding = 128
#
# Try to find candidate parameters for rational resampler
#
save_i = 0
candidates = []
for i in range(20,300):
input_rate = self.folder_input_rate
output_rate = int(self.pulse_freq * i)
interp = gru.lcm(input_rate, output_rate) / input_rate
decim = gru.lcm(input_rate, output_rate) / output_rate
if (interp < 500 and decim < 250000):
candidates.append(i)
# We didn't find anything, bail!
if (len(candidates) < 1):
print "Couldn't converge on resampler parameters"
sys.exit(1)
#
# Now try to find candidate with the least sampling error
#
mindiff = 999.999
for i in candidates:
diff = self.pulse_freq * i
diff = diff - int(diff)
if (diff < mindiff):
mindiff = diff
save_i = i
# Recompute rates
input_rate = self.folder_input_rate
output_rate = int(self.pulse_freq * save_i)
# Compute new interp and decim, based on best candidate
interp = gru.lcm(input_rate, output_rate) / input_rate
decim = gru.lcm(input_rate, output_rate) / output_rate
# Save optimized folding parameters, used later
self.folding = save_i
self.interp = int(interp)
self.decim = int(decim)
# So that we can view N pulses in the pulse viewer window
FOLD_MULT=self.mult
# determine the daughterboard subdevice we're using
self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec)
self.cardtype = self.u.daughterboard_id(0)
# Compute raw input rate
input_rate = self.u.adc_freq() / self.u.decim_rate()
# BW==input_rate for complex data
self.bw = input_rate
#
# Set baseband filter bandwidth if DBS_RX:
#
if self.cardtype == usrp_dbid.DBS_RX:
lbw = input_rate / 2
if lbw < 1.0e6:
lbw = 1.0e6
self.subdev.set_bw(lbw)
#
# We use this as a crude volume control for the audio output
#
#self.volume = gr.multiply_const_ff(10**(-1))
#
# Create location data for ephem package
#
self.locality = ephem.Observer()
self.locality.long = str(options.longitude)
self.locality.lat = str(options.latitude)
#
# What is the post-detector LPF cutoff for the FFT?
#
PULSAR_MAX_FREQ=int(options.lowpass)
# First low-pass filters down to input_rate/FIRST_FACTOR
# and decimates appropriately
FIRST_FACTOR=int(input_rate/(self.folder_input_rate/2))
first_filter = gr.firdes.low_pass (1.0,
input_rate,
input_rate/FIRST_FACTOR,
input_rate/(FIRST_FACTOR*20),
gr.firdes.WIN_HAMMING)
# Second filter runs at the output rate of the first filter,
# And low-pass filters down to PULSAR_MAX_FREQ*10
#
second_input_rate = int(input_rate/(FIRST_FACTOR/2))
second_filter = gr.firdes.band_pass(1.0, second_input_rate,
0.10,
PULSAR_MAX_FREQ*10,
PULSAR_MAX_FREQ*1.5,
gr.firdes.WIN_HAMMING)
# Third filter runs at PULSAR_MAX_FREQ*20
# and filters down to PULSAR_MAX_FREQ
#
third_input_rate = PULSAR_MAX_FREQ*20
third_filter = gr.firdes_band_pass(1.0, third_input_rate,
0.10, PULSAR_MAX_FREQ,
PULSAR_MAX_FREQ/10.0,
gr.firdes.WIN_HAMMING)
#
# Create the appropriate FFT scope
#
self.scope = ra_fftsink.ra_fft_sink_f (panel,
fft_size=int(options.fft_size), sample_rate=PULSAR_MAX_FREQ*2,
title="Post-detector spectrum",
ofunc=self.pulsarfunc, xydfunc=self.xydfunc, fft_rate=200)
#
# Tell scope we're looking from DC to PULSAR_MAX_FREQ
#
self.scope.set_baseband_freq (0.0)
#
# Setup stripchart for showing pulse profiles
#
hz = "%5.3fHz " % self.pulse_freq
per = "(%5.3f sec)" % (1.0/self.pulse_freq)
sr = "%d sps" % (int(self.pulse_freq*self.folding))
times = " %d Pulse Intervals" % self.mult
self.chart = ra_stripchartsink.stripchart_sink_f (panel,
sample_rate=1,
stripsize=self.folding*FOLD_MULT, parallel=True, title="Pulse Profiles: "+hz+per+times,
xlabel="Seconds @ "+sr, ylabel="Level", autoscale=True,
divbase=self.divbase, scaling=1.0/(self.folding*self.pulse_freq))
self.chart.set_ref_level(self.reflevel)
self.chart.set_y_per_div(self.division)
# De-dispersion filter setup
#
# Do this here, just before creating the filter
# that will use the taps.
#
ntaps = self.compute_disp_ntaps(self.dm,self.bw,self.observing_freq)
# Taps for the de-dispersion filter
self.disp_taps = Numeric.zeros(ntaps,Numeric.Complex64)
# Compute the de-dispersion filter now
self.compute_dispfilter(self.dm,self.doppler,
self.bw,self.observing_freq)
#
# Call constructors for receive chains
#
#
# Now create the FFT filter using the computed taps
self.dispfilt = gr.fft_filter_ccc(1, self.disp_taps)
#
# Audio sink
#
#print "input_rate ", second_input_rate, "audiodev ", self.audiodev
#self.audio = audio.sink(second_input_rate, self.audiodev)
#
# The three post-detector filters
# Done this way to allow an audio path (up to 10Khz)
# ...and also because going from xMhz down to ~100Hz
# In a single filter doesn't seem to work.
#
self.first = gr.fir_filter_fff (FIRST_FACTOR/2, first_filter)
p = second_input_rate / (PULSAR_MAX_FREQ*20)
self.second = gr.fir_filter_fff (int(p), second_filter)
self.third = gr.fir_filter_fff (10, third_filter)
# Detector
self.detector = gr.complex_to_mag_squared()
self.enable_comb_filter = False
# Epoch folder comb filter
if self.enable_comb_filter == True:
bogtaps = Numeric.zeros(512, Numeric.Float64)
self.folder_comb = gr.fft_filter_ccc(1,bogtaps)
# Rational resampler
self.folder_rr = blks2.rational_resampler_fff(self.interp, self.decim)
# Epoch folder bandpass
bogtaps = Numeric.zeros(1, Numeric.Float64)
self.folder_bandpass = gr.fir_filter_fff (1, bogtaps)
# Epoch folder F2C/C2F
self.folder_f2c = gr.float_to_complex()
self.folder_c2f = gr.complex_to_float()
# Epoch folder S2P
self.folder_s2p = gr.serial_to_parallel (gr.sizeof_float,
self.folding*FOLD_MULT)
# Epoch folder IIR Filter (produces average pulse profiles)
self.folder_iir = gr.single_pole_iir_filter_ff(1.0/options.favg,
self.folding*FOLD_MULT)
#
# Set all the epoch-folder goop up
#
self.set_folding_params()
#
# Start connecting configured modules in the receive chain
#
# Connect raw USRP to de-dispersion filter, detector
self.connect(self.u, self.dispfilt, self.detector)
# Connect detector output to FIR LPF
# in two stages, followed by the FFT scope
self.connect(self.detector, self.first,
self.second, self.third, self.scope)
# Connect audio output
#self.connect(self.first, self.volume)
#self.connect(self.volume, (self.audio, 0))
#self.connect(self.volume, (self.audio, 1))
# Connect epoch folder
if self.enable_comb_filter == True:
self.connect (self.first, self.folder_bandpass, self.folder_rr,
self.folder_f2c,
self.folder_comb, self.folder_c2f,
self.folder_s2p, self.folder_iir,
self.chart)
else:
self.connect (self.first, self.folder_bandpass, self.folder_rr,
self.folder_s2p, self.folder_iir, self.chart)
# Connect baseband recording file (initially /dev/null)
self.connect(self.u, self.tofloat, self.tochar, self.recording)
# Connect pulse recording file (initially /dev/null)
self.connect(self.first, self.toshort, self.pulse_recording)
#
# Build the GUI elements
#
self._build_gui(vbox)
# Make GUI agree with command-line
self.myform['average'].set_value(int(options.avg))
self.myform['foldavg'].set_value(int(options.favg))
# Make spectral averager agree with command line
if options.avg != 1.0:
self.scope.set_avg_alpha(float(1.0/options.avg))
self.scope.set_average(True)
# set initial values
if options.gain is None:
# if no gain was specified, use the mid-point in dB
g = self.subdev.gain_range()
options.gain = float(g[0]+g[1])/2
if options.freq is None:
# if no freq was specified, use the mid-point
r = self.subdev.freq_range()
options.freq = float(r[0]+r[1])/2
self.set_gain(options.gain)
#self.set_volume(-10.0)
if not(self.set_freq(options.freq)):
self._set_status_msg("Failed to set initial frequency")
self.myform['decim'].set_value(self.u.decim_rate())
self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate())
self.myform['dbname'].set_value(self.subdev.name())
self.myform['DM'].set_value(self.dm)
self.myform['Doppler'].set_value(self.doppler)
#
# Start the timer that shows current LMST on the GUI
#
self.lmst_timer.Start(1000)
def graph (args):
nargs = len(args)
if nargs == 2:
infile = args[0]
outfile = args[1]
else:
raise ValueError('usage: interp.py input_file output_file\n')
tb = gr.top_block ()
# Convert to a from shorts to a stream of complex numbers.
srcf = gr.file_source (gr.sizeof_short,infile)
s2ss = gr.stream_to_streams(gr.sizeof_short,2)
s2f1 = gr.short_to_float()
s2f2 = gr.short_to_float()
src0 = gr.float_to_complex()
tb.connect(srcf, s2ss)
tb.connect((s2ss, 0), s2f1, (src0, 0))
tb.connect((s2ss, 1), s2f2, (src0, 1))
# Low pass filter it and increase sample rate by a factor of 3.
lp_coeffs = gr.firdes.low_pass ( 3, 19.2e6, 3.2e6, .5e6, gr.firdes.WIN_HAMMING )
lp = gr.interp_fir_filter_ccf ( 3, lp_coeffs )
tb.connect(src0, lp)
# Upconvert it.
duc_coeffs = gr.firdes.low_pass ( 1, 19.2e6, 9e6, 1e6, gr.firdes.WIN_HAMMING )
duc = gr.freq_xlating_fir_filter_ccf ( 1, duc_coeffs, 5.75e6, 19.2e6 )
# Discard the imaginary component.
c2f = gr.complex_to_float()
tb.connect(lp, duc, c2f)
# Frequency Phase Lock Loop
input_rate = 19.2e6
IF_freq = 5.75e6
# 1/2 as wide because we're designing lp filter
symbol_rate = atsc.ATSC_SYMBOL_RATE/2.
NTAPS = 279
tt = gr.firdes.root_raised_cosine (1.0, input_rate, symbol_rate, .115, NTAPS)
# heterodyne the low pass coefficients up to the specified bandpass
# center frequency. Note that when we do this, the filter bandwidth
# is effectively twice the low pass (2.69 * 2 = 5.38) and hence
# matches the diagram in the ATSC spec.
arg = 2. * math.pi * IF_freq / input_rate
t=[]
for i in range(len(tt)):
t += [tt[i] * 2. * math.cos(arg * i)]
rrc = gr.fir_filter_fff(1, t)
fpll = atsc.fpll()
pilot_freq = IF_freq - 3e6 + 0.31e6
lower_edge = 6e6 - 0.31e6
upper_edge = IF_freq - 3e6 + pilot_freq
transition_width = upper_edge - lower_edge
lp_coeffs = gr.firdes.low_pass (1.0,
input_rate,
(lower_edge + upper_edge) * 0.5,
transition_width,
gr.firdes.WIN_HAMMING);
lp_filter = gr.fir_filter_fff (1,lp_coeffs)
alpha = 1e-5
iir = gr.single_pole_iir_filter_ff(alpha)
remove_dc = gr.sub_ff()
tb.connect(c2f, fpll, lp_filter)
tb.connect(lp_filter, iir)
tb.connect(lp_filter, (remove_dc,0))
tb.connect(iir, (remove_dc,1))
# Bit Timing Loop, Field Sync Checker and Equalizer
btl = atsc.bit_timing_loop()
fsc = atsc.fs_checker()
eq = atsc.equalizer()
fsd = atsc.field_sync_demux()
tb.connect(remove_dc, btl)
tb.connect((btl, 0),(fsc, 0),(eq, 0),(fsd, 0))
tb.connect((btl, 1),(fsc, 1),(eq, 1),(fsd, 1))
# Viterbi
viterbi = atsc.viterbi_decoder()
deinter = atsc.deinterleaver()
rs_dec = atsc.rs_decoder()
derand = atsc.derandomizer()
depad = atsc.depad()
dst = gr.file_sink(gr.sizeof_char, outfile)
tb.connect(fsd, viterbi, deinter, rs_dec, derand, depad, dst)
dst2 = gr.file_sink(gr.sizeof_gr_complex, "atsc_complex.data")
tb.connect(src0, dst2)
tb.run ()
import mediatools;
sys.path.append(".");
# Construct playlist
pl = mediatools.strvec(["1.mp3","2.ogg"]);
# Setup sample rates
dac_sample_rate = 44100;
file_sample_rate = 44100;
default_device = "";
# Instantiate blocks
tb = gr.top_block();
src = mediatools.audiosource_s(pl);
s2c = gr.interleaved_short_to_complex();
c2f = gr.complex_to_float();
mc = gr.multiply_const_cc(1.0/(32768.0)); # scale to the +1 / -1 range
sink = audio.sink(dac_sample_rate,default_device);
# Connect up flowgraph
tb.connect(src,s2c,mc,c2f); # connect src->scalar->float conversion
tb.connect(c2f,sink); # connect left channel
tb.connect((c2f,1),(sink,1)); # connect right channel
# And go
tb.run();
def __init__( self, parent, title='', sample_rate=1, size=scope_window.DEFAULT_WIN_SIZE, v_scale=0, t_scale=0, xy_mode=False, ac_couple=False, num_inputs=1, frame_rate=scope_window.DEFAULT_FRAME_RATE, **kwargs #do not end with a comma ): if not t_scale: t_scale = 10.0/sample_rate #init gr.hier_block2.__init__( self, "scope_sink", gr.io_signature(num_inputs, num_inputs, self._item_size), gr.io_signature(0, 0, 0), ) #scope msgq = gr.msg_queue(2) scope = gr.oscope_sink_f(sample_rate, msgq) #controller self.controller = pubsub() self.controller.subscribe(SAMPLE_RATE_KEY, scope.set_sample_rate) self.controller.publish(SAMPLE_RATE_KEY, scope.sample_rate) self.controller.subscribe(DECIMATION_KEY, scope.set_decimation_count) self.controller.publish(DECIMATION_KEY, scope.get_decimation_count) self.controller.subscribe(TRIGGER_LEVEL_KEY, scope.set_trigger_level) self.controller.publish(TRIGGER_LEVEL_KEY, scope.get_trigger_level) self.controller.subscribe(TRIGGER_MODE_KEY, scope.set_trigger_mode) self.controller.publish(TRIGGER_MODE_KEY, scope.get_trigger_mode) self.controller.subscribe(TRIGGER_SLOPE_KEY, scope.set_trigger_slope) self.controller.publish(TRIGGER_SLOPE_KEY, scope.get_trigger_slope) self.controller.subscribe(TRIGGER_CHANNEL_KEY, scope.set_trigger_channel) self.controller.publish(TRIGGER_CHANNEL_KEY, scope.get_trigger_channel) #connect if self._real: for i in range(num_inputs): self.connect( (self, i), ac_couple_block(self.controller, common.index_key(AC_COUPLE_KEY, i), ac_couple, SAMPLE_RATE_KEY), (scope, i), ) else: for i in range(num_inputs): c2f = gr.complex_to_float() self.connect((self, i), c2f) for j in range(2): self.connect( (c2f, j), ac_couple_block(self.controller, common.index_key(AC_COUPLE_KEY, 2*i+j), ac_couple, SAMPLE_RATE_KEY), (scope, 2*i+j), ) num_inputs *= 2 #start input watcher common.input_watcher(msgq, self.controller, MSG_KEY) #create window self.win = scope_window.scope_window( parent=parent, controller=self.controller, size=size, title=title, frame_rate=frame_rate, num_inputs=num_inputs, sample_rate_key=SAMPLE_RATE_KEY, t_scale=t_scale, v_scale=v_scale, xy_mode=xy_mode, ac_couple_key=AC_COUPLE_KEY, trigger_level_key=TRIGGER_LEVEL_KEY, trigger_mode_key=TRIGGER_MODE_KEY, trigger_slope_key=TRIGGER_SLOPE_KEY, trigger_channel_key=TRIGGER_CHANNEL_KEY, decimation_key=DECIMATION_KEY, msg_key=MSG_KEY, ) common.register_access_methods(self, self.win)
def __init__(self):
gr.top_block.__init__(self, "writeToFile")
Qt.QWidget.__init__(self)
self.setWindowTitle("writeToFile")
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.bufferRE = collections.deque(400*[0], 400) # init buffer of 400 entries, max length 400
self.bufferIM = collections.deque(400*[0], 400) # init buffer of 400 entries, max length 400
##################################################
# Variables
##################################################
self.variable_function_probe_1 = variable_function_probe_1 = 0
self.variable_function_probe_0 = variable_function_probe_0 = 0
self.samp_rate = samp_rate = 320000
self.receiveFrequency = receiveFrequency = 900000000
##################################################
# Blocks
##################################################
self.gr_probe_signal_f_1 = gr.probe_signal_f()
self.gr_probe_signal_f_0 = gr.probe_signal_f()
def _variable_function_probe_1_probe():
while True:
val = self.gr_probe_signal_f_1.level()
try: self.set_variable_function_probe_1(val)
except AttributeError, e: pass
time.sleep(1.0/(100)) # Sample rate 100 Hz
# starts the thread that samples the signal continuously
_variable_function_probe_1_thread = threading.Thread(target=_variable_function_probe_1_probe)
_variable_function_probe_1_thread.daemon = True
_variable_function_probe_1_thread.start()
def _variable_function_probe_0_probe():
while True:
val = self.gr_probe_signal_f_0.level()
try: self.set_variable_function_probe_0(val)
except AttributeError, e: pass
time.sleep(1.0/(100)) # Sample rate 100 Hz
# starts the thread that samples the signal continuously
_variable_function_probe_0_thread = threading.Thread(target=_variable_function_probe_0_probe)
_variable_function_probe_0_thread.daemon = True
_variable_function_probe_0_thread.start()
### TODO: Write values read from the channel continuously into a buffer
### TODO: read out the buffer continuously in another thread for classification
### TODO: output the classification
def _variable_classification():
# myFile = open("classification.tab", "a")
# myFile.write('mean\tmedian\tvar\tTCM\tRMS\tmax\tmin\tdiff\tcountmax10%\tdirectionchange\tzeroCross\tDirChanzeroCross\tavgzerocross\tstddeviation\tlocation-coordinator\n')
# #myFile.write('mean\tmedian\tvar\tTCM\tRMS\tmax\tmin\tdiff\tcountmax10%\tdirectionchange\tEntropy\tSpecenergy\tzeroCross\tDirChanzeroCross\tavgzerocross\tavgFFT\tstddeviation\tlocation-coordinator\n') # Write a feature string to a tab file #18 features
# myFile.write('c\tc\tc\tc\tc\tc\tc\tc\tc\tc\tc\tc\tc\tc\td\n') #18
# myFile.write('\t\t\t\t\t\t\t\t\t\t\t\t\t\tclass\n')
# myFile.close()
while True:
# TODO: do classification here
classification = self.get_classification()
# TODO: Write out classification
time.sleep(1.0/(2)) # One classification every 0.5 seconds
# starts the thread that samples the signal continuously
_variable_classification_thread = threading.Thread(target=_variable_classification)
_variable_classification_thread.daemon = True
_variable_classification_thread.start()
def _variable_featureVisualisation(*args):
while True:
for data in args:
plot(data)
show()
time.sleep(1.0/(2))
_variable_featureVisualisation_thread = threading.Thread(target=_variable_featureVisualisation)
_variable_featureVisualisation_thread.daemon = True
_variable_featureVisualisation_thread.start()
#p = Process(target=plot_graph, args=([1, 2, 3],))
#p.start()
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(receiveFrequency, 0)
self.uhd_usrp_source_0.set_gain(20, 0)
self.qtgui_sink_x_0 = qtgui.sink_c(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
True, #plotfreq
True, #plotwaterfall
True, #plottime
True, #plotconst
)
self.qtgui_sink_x_0.set_update_time(1.0 / 10)
self._qtgui_sink_x_0_win = sip.wrapinstance(self.qtgui_sink_x_0.pyqwidget(), Qt.QWidget)
self.top_layout.addWidget(self._qtgui_sink_x_0_win)
self.gr_complex_to_float_0 = gr.complex_to_float(1)
##################################################
# Connections
##################################################
self.connect((self.uhd_usrp_source_0, 0), (self.gr_complex_to_float_0, 0))
self.connect((self.gr_complex_to_float_0, 0), (self.gr_probe_signal_f_0, 0))
self.connect((self.gr_complex_to_float_0, 1), (self.gr_probe_signal_f_1, 0))
self.connect((self.uhd_usrp_source_0, 0), (self.qtgui_sink_x_0, 0))
def __init__(self, frame, panel, vbox, argv):
stdgui2.std_top_block.__init__(self, frame, panel, vbox, argv)
self.frame = frame
self.panel = panel
parser = OptionParser(option_class=eng_option)
parser.add_option("-R",
"--rx-subdev-spec",
type="subdev",
default=(0, 0),
help="select USRP Rx side A or B (default=A)")
parser.add_option(
"-d",
"--decim",
type="int",
default=16,
help="set fgpa decimation rate to DECIM [default=%default]")
parser.add_option("-f",
"--freq",
type="eng_float",
default=None,
help="set frequency to FREQ",
metavar="FREQ")
parser.add_option("-Q",
"--observing",
type="eng_float",
default=0.0,
help="set observing frequency to FREQ")
parser.add_option("-a",
"--avg",
type="eng_float",
default=1.0,
help="set spectral averaging alpha")
parser.add_option("-V",
"--favg",
type="eng_float",
default=2.0,
help="set folder averaging alpha")
parser.add_option("-g",
"--gain",
type="eng_float",
default=None,
help="set gain in dB (default is midpoint)")
parser.add_option("-l",
"--reflevel",
type="eng_float",
default=30.0,
help="Set pulse display reference level")
parser.add_option("-L",
"--lowest",
type="eng_float",
default=1.5,
help="Lowest valid frequency bin")
parser.add_option("-e",
"--longitude",
type="eng_float",
default=-76.02,
help="Set Observer Longitude")
parser.add_option("-c",
"--latitude",
type="eng_float",
default=44.85,
help="Set Observer Latitude")
parser.add_option("-F",
"--fft_size",
type="eng_float",
default=1024,
help="Size of FFT")
parser.add_option("-t",
"--threshold",
type="eng_float",
default=2.5,
help="pulsar threshold")
parser.add_option("-p",
"--lowpass",
type="eng_float",
default=100,
help="Pulse spectra cutoff freq")
parser.add_option("-P", "--prefix", default="./", help="File prefix")
parser.add_option("-u",
"--pulsefreq",
type="eng_float",
default=0.748,
help="Observation pulse rate")
parser.add_option("-D",
"--dm",
type="eng_float",
default=1.0e-5,
help="Dispersion Measure")
parser.add_option("-O",
"--doppler",
type="eng_float",
default=1.0,
help="Doppler ratio")
parser.add_option("-B",
"--divbase",
type="eng_float",
default=20,
help="Y/Div menu base")
parser.add_option("-I",
"--division",
type="eng_float",
default=100,
help="Y/Div")
parser.add_option("-A",
"--audio_source",
default="plughw:0,0",
help="Audio input device spec")
parser.add_option("-N",
"--num_pulses",
default=1,
type="eng_float",
help="Number of display pulses")
(options, args) = parser.parse_args()
if len(args) != 0:
parser.print_help()
sys.exit(1)
self.show_debug_info = True
self.reflevel = options.reflevel
self.divbase = options.divbase
self.division = options.division
self.audiodev = options.audio_source
self.mult = int(options.num_pulses)
# Low-pass cutoff for post-detector filter
# Set to 100Hz usually, since lots of pulsars fit in this
# range
self.lowpass = options.lowpass
# What is lowest valid frequency bin in post-detector FFT?
# There's some pollution very close to DC
self.lowest_freq = options.lowest
# What (dB) threshold to use in determining spectral candidates
self.threshold = options.threshold
# Filename prefix for recording file
self.prefix = options.prefix
# Dispersion Measure (DM)
self.dm = options.dm
# Doppler shift, as a ratio
# 1.0 == no doppler shift
# 1.005 == a little negative shift
# 0.995 == a little positive shift
self.doppler = options.doppler
#
# Input frequency and observing frequency--not necessarily the
# same thing, if we're looking at the IF of some downconverter
# that's ahead of the USRP and daughtercard. This distinction
# is important in computing the correct de-dispersion filter.
#
self.frequency = options.freq
if options.observing <= 0:
self.observing_freq = options.freq
else:
self.observing_freq = options.observing
# build the graph
self.u = usrp.source_c(decim_rate=options.decim)
self.u.set_mux(
usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec))
#
# Recording file, in case we ever need to record baseband data
#
self.recording = gr.file_sink(gr.sizeof_char, "/dev/null")
self.recording_state = False
self.pulse_recording = gr.file_sink(gr.sizeof_short, "/dev/null")
self.pulse_recording_state = False
#
# We come up with recording turned off, but the user may
# request recording later on
self.recording.close()
self.pulse_recording.close()
#
# Need these two for converting 12-bit baseband signals to 8-bit
#
self.tofloat = gr.complex_to_float()
self.tochar = gr.float_to_char()
# Need this for recording pulses (post-detector)
self.toshort = gr.float_to_short()
#
# The spectral measurer sets this when it has a valid
# average spectral peak-to-peak distance
# We can then use this to program the parameters for the epoch folder
#
# We set a sentimental value here
self.pulse_freq = options.pulsefreq
# Folder runs at this raw sample rate
self.folder_input_rate = 20000
# Each pulse in the epoch folder is sampled at 128 times the nominal
# pulse rate
self.folding = 128
#
# Try to find candidate parameters for rational resampler
#
save_i = 0
candidates = []
for i in range(20, 300):
input_rate = self.folder_input_rate
output_rate = int(self.pulse_freq * i)
interp = gru.lcm(input_rate, output_rate) / input_rate
decim = gru.lcm(input_rate, output_rate) / output_rate
if (interp < 500 and decim < 250000):
candidates.append(i)
# We didn't find anything, bail!
if (len(candidates) < 1):
print "Couldn't converge on resampler parameters"
sys.exit(1)
#
# Now try to find candidate with the least sampling error
#
mindiff = 999.999
for i in candidates:
diff = self.pulse_freq * i
diff = diff - int(diff)
if (diff < mindiff):
mindiff = diff
save_i = i
# Recompute rates
input_rate = self.folder_input_rate
output_rate = int(self.pulse_freq * save_i)
# Compute new interp and decim, based on best candidate
interp = gru.lcm(input_rate, output_rate) / input_rate
decim = gru.lcm(input_rate, output_rate) / output_rate
# Save optimized folding parameters, used later
self.folding = save_i
self.interp = int(interp)
self.decim = int(decim)
# So that we can view N pulses in the pulse viewer window
FOLD_MULT = self.mult
# determine the daughterboard subdevice we're using
self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec)
self.cardtype = self.u.daughterboard_id(0)
# Compute raw input rate
input_rate = self.u.adc_freq() / self.u.decim_rate()
# BW==input_rate for complex data
self.bw = input_rate
#
# Set baseband filter bandwidth if DBS_RX:
#
if self.cardtype == usrp_dbid.DBS_RX:
lbw = input_rate / 2
if lbw < 1.0e6:
lbw = 1.0e6
self.subdev.set_bw(lbw)
#
# We use this as a crude volume control for the audio output
#
#self.volume = gr.multiply_const_ff(10**(-1))
#
# Create location data for ephem package
#
self.locality = ephem.Observer()
self.locality.long = str(options.longitude)
self.locality.lat = str(options.latitude)
#
# What is the post-detector LPF cutoff for the FFT?
#
PULSAR_MAX_FREQ = int(options.lowpass)
# First low-pass filters down to input_rate/FIRST_FACTOR
# and decimates appropriately
FIRST_FACTOR = int(input_rate / (self.folder_input_rate / 2))
first_filter = gr.firdes.low_pass(1.0, input_rate,
input_rate / FIRST_FACTOR,
input_rate / (FIRST_FACTOR * 20),
gr.firdes.WIN_HAMMING)
# Second filter runs at the output rate of the first filter,
# And low-pass filters down to PULSAR_MAX_FREQ*10
#
second_input_rate = int(input_rate / (FIRST_FACTOR / 2))
second_filter = gr.firdes.band_pass(1.0, second_input_rate, 0.10,
PULSAR_MAX_FREQ * 10,
PULSAR_MAX_FREQ * 1.5,
gr.firdes.WIN_HAMMING)
# Third filter runs at PULSAR_MAX_FREQ*20
# and filters down to PULSAR_MAX_FREQ
#
third_input_rate = PULSAR_MAX_FREQ * 20
third_filter = gr.firdes_band_pass(1.0, third_input_rate, 0.10,
PULSAR_MAX_FREQ,
PULSAR_MAX_FREQ / 10.0,
gr.firdes.WIN_HAMMING)
#
# Create the appropriate FFT scope
#
self.scope = ra_fftsink.ra_fft_sink_f(panel,
fft_size=int(options.fft_size),
sample_rate=PULSAR_MAX_FREQ * 2,
title="Post-detector spectrum",
ofunc=self.pulsarfunc,
xydfunc=self.xydfunc,
fft_rate=200)
#
# Tell scope we're looking from DC to PULSAR_MAX_FREQ
#
self.scope.set_baseband_freq(0.0)
#
# Setup stripchart for showing pulse profiles
#
hz = "%5.3fHz " % self.pulse_freq
per = "(%5.3f sec)" % (1.0 / self.pulse_freq)
sr = "%d sps" % (int(self.pulse_freq * self.folding))
times = " %d Pulse Intervals" % self.mult
self.chart = ra_stripchartsink.stripchart_sink_f(
panel,
sample_rate=1,
stripsize=self.folding * FOLD_MULT,
parallel=True,
title="Pulse Profiles: " + hz + per + times,
xlabel="Seconds @ " + sr,
ylabel="Level",
autoscale=True,
divbase=self.divbase,
scaling=1.0 / (self.folding * self.pulse_freq))
self.chart.set_ref_level(self.reflevel)
self.chart.set_y_per_div(self.division)
# De-dispersion filter setup
#
# Do this here, just before creating the filter
# that will use the taps.
#
ntaps = self.compute_disp_ntaps(self.dm, self.bw, self.observing_freq)
# Taps for the de-dispersion filter
self.disp_taps = Numeric.zeros(ntaps, Numeric.Complex64)
# Compute the de-dispersion filter now
self.compute_dispfilter(self.dm, self.doppler, self.bw,
self.observing_freq)
#
# Call constructors for receive chains
#
#
# Now create the FFT filter using the computed taps
self.dispfilt = gr.fft_filter_ccc(1, self.disp_taps)
#
# Audio sink
#
#print "input_rate ", second_input_rate, "audiodev ", self.audiodev
#self.audio = audio.sink(second_input_rate, self.audiodev)
#
# The three post-detector filters
# Done this way to allow an audio path (up to 10Khz)
# ...and also because going from xMhz down to ~100Hz
# In a single filter doesn't seem to work.
#
self.first = gr.fir_filter_fff(FIRST_FACTOR / 2, first_filter)
p = second_input_rate / (PULSAR_MAX_FREQ * 20)
self.second = gr.fir_filter_fff(int(p), second_filter)
self.third = gr.fir_filter_fff(10, third_filter)
# Detector
self.detector = gr.complex_to_mag_squared()
self.enable_comb_filter = False
# Epoch folder comb filter
if self.enable_comb_filter == True:
bogtaps = Numeric.zeros(512, Numeric.Float64)
self.folder_comb = gr.fft_filter_ccc(1, bogtaps)
# Rational resampler
self.folder_rr = blks2.rational_resampler_fff(self.interp, self.decim)
# Epoch folder bandpass
bogtaps = Numeric.zeros(1, Numeric.Float64)
self.folder_bandpass = gr.fir_filter_fff(1, bogtaps)
# Epoch folder F2C/C2F
self.folder_f2c = gr.float_to_complex()
self.folder_c2f = gr.complex_to_float()
# Epoch folder S2P
self.folder_s2p = gr.serial_to_parallel(gr.sizeof_float,
self.folding * FOLD_MULT)
# Epoch folder IIR Filter (produces average pulse profiles)
self.folder_iir = gr.single_pole_iir_filter_ff(
1.0 / options.favg, self.folding * FOLD_MULT)
#
# Set all the epoch-folder goop up
#
self.set_folding_params()
#
# Start connecting configured modules in the receive chain
#
# Connect raw USRP to de-dispersion filter, detector
self.connect(self.u, self.dispfilt, self.detector)
# Connect detector output to FIR LPF
# in two stages, followed by the FFT scope
self.connect(self.detector, self.first, self.second, self.third,
self.scope)
# Connect audio output
#self.connect(self.first, self.volume)
#self.connect(self.volume, (self.audio, 0))
#self.connect(self.volume, (self.audio, 1))
# Connect epoch folder
if self.enable_comb_filter == True:
self.connect(self.first, self.folder_bandpass, self.folder_rr,
self.folder_f2c, self.folder_comb, self.folder_c2f,
self.folder_s2p, self.folder_iir, self.chart)
else:
self.connect(self.first, self.folder_bandpass, self.folder_rr,
self.folder_s2p, self.folder_iir, self.chart)
# Connect baseband recording file (initially /dev/null)
self.connect(self.u, self.tofloat, self.tochar, self.recording)
# Connect pulse recording file (initially /dev/null)
self.connect(self.first, self.toshort, self.pulse_recording)
#
# Build the GUI elements
#
self._build_gui(vbox)
# Make GUI agree with command-line
self.myform['average'].set_value(int(options.avg))
self.myform['foldavg'].set_value(int(options.favg))
# Make spectral averager agree with command line
if options.avg != 1.0:
self.scope.set_avg_alpha(float(1.0 / options.avg))
self.scope.set_average(True)
# set initial values
if options.gain is None:
# if no gain was specified, use the mid-point in dB
g = self.subdev.gain_range()
options.gain = float(g[0] + g[1]) / 2
if options.freq is None:
# if no freq was specified, use the mid-point
r = self.subdev.freq_range()
options.freq = float(r[0] + r[1]) / 2
self.set_gain(options.gain)
#self.set_volume(-10.0)
if not (self.set_freq(options.freq)):
self._set_status_msg("Failed to set initial frequency")
self.myform['decim'].set_value(self.u.decim_rate())
self.myform['fs@usb'].set_value(self.u.adc_freq() /
self.u.decim_rate())
self.myform['dbname'].set_value(self.subdev.name())
self.myform['DM'].set_value(self.dm)
self.myform['Doppler'].set_value(self.doppler)
#
# Start the timer that shows current LMST on the GUI
#
self.lmst_timer.Start(1000)
def __init__(self, frame, panel, vbox, argv):
stdgui2.std_top_block.__init__(self, frame, panel, vbox, argv)
self.frame = frame
self.panel = panel
self.offset = 0.0 # Channel frequency offset
parser = OptionParser(option_class=eng_option)
parser.add_option(
"-p",
"--protocol",
type="int",
default=1,
help="set protocol: 0 = RDLAP 19.2kbps; 1 = APCO25 (default)")
parser.add_option("-g",
"--gain",
type="eng_float",
default=1.0,
help="set linear input gain (default: %default)")
parser.add_option("-x",
"--freq-translation",
type="eng_float",
default=0.0,
help="initial channel frequency translation")
parser.add_option(
"-n",
"--frame-decim",
type="int",
default=1,
help="set oscope frame decimation factor to n [default=1]")
parser.add_option(
"-v",
"--v-scale",
type="eng_float",
default=5000,
help="set oscope initial V/div to SCALE [default=%default]")
parser.add_option(
"-t",
"--t-scale",
type="eng_float",
default=49e-6,
help="set oscope initial s/div to SCALE [default=50us]")
parser.add_option(
"-I",
"--audio-input",
type="string",
default="",
help="pcm input device name. E.g., hw:0,0 or /dev/dsp")
parser.add_option("-r",
"--sample-rate",
type="eng_float",
default=48000,
help="set sample rate to RATE (default: %default)")
parser.add_option(
"-d",
"--channel-decim",
type="int",
default=None,
help=
"set channel decimation factor to n [default depends on protocol]")
parser.add_option("-w",
"--wav-file",
type="string",
default=None,
help="WAV input path")
parser.add_option("-f",
"--data-file",
type="string",
default=None,
help="Data input path")
parser.add_option("-B",
"--base-band",
action="store_true",
default=False)
parser.add_option("-R", "--repeat", action="store_true", default=False)
parser.add_option("-o",
"--wav-out",
type="string",
default=None,
help="WAV output path")
parser.add_option("-G",
"--wav-out-gain",
type="eng_float",
default=0.05,
help="set WAV output gain (default: %default)")
parser.add_option("-F",
"--data-out",
type="string",
default=None,
help="Data output path")
parser.add_option("-C",
"--carrier-freq",
type="eng_float",
default=None,
help="set data output carrier frequency to FREQ",
metavar="FREQ")
(options, args) = parser.parse_args()
if len(args) != 0:
parser.print_help()
sys.exit(1)
self.options = options
if options.wav_file is not None:
#try:
self.input_file = gr.wavfile_source(options.wav_file,
options.repeat)
#except:
# print "WAV file not found or not a WAV file"
# sys.exit(1)
print "WAV input: %i Hz, %i bits, %i channels" % (
self.input_file.sample_rate(),
self.input_file.bits_per_sample(), self.input_file.channels())
self.sample_rate = self.input_file.sample_rate()
self.input_stream = gr.throttle(gr.sizeof_float, self.sample_rate)
self.connect(self.input_file, self.input_stream)
self.src = gr.multiply_const_ff(options.gain)
elif options.data_file is not None:
if options.base_band:
sample_size = gr.sizeof_float
print "Data file is baseband (float)"
self.src = gr.multiply_const_ff(options.gain)
else:
sample_size = gr.sizeof_gr_complex
print "Data file is IF (complex)"
self.src = gr.multiply_const_cc(options.gain)
self.input_file = gr.file_source(sample_size, options.data_file,
options.repeat)
self.sample_rate = options.sample_rate # E.g. 250000
print "Data file sampling rate = " + str(self.sample_rate)
self.input_stream = gr.throttle(sample_size, self.sample_rate)
self.connect(self.input_file, self.input_stream)
else:
self.sample_rate = options.sample_rate
print "Soundcard sampling rate = " + str(self.sample_rate)
self.input_stream = audio.source(
self.sample_rate, options.audio_input) # float samples
self.src = gr.multiply_const_ff(options.gain)
print "Fixed input gain = " + str(options.gain)
self.connect(self.input_stream, self.src)
if options.wav_out is not None:
output_rate = int(self.sample_rate)
if options.channel_decim is not None:
output_rate /= options.channel_decim
self.wav_out = gr.wavfile_sink(options.wav_out, 1, output_rate, 16)
print "Opened WAV output file: " + options.wav_out + " at rate: " + str(
output_rate)
else:
self.wav_out = None
if options.data_out is not None:
if options.carrier_freq is None:
self.data_out = gr.file_sink(gr.sizeof_float, options.data_out)
print "Opened float data output file: " + options.data_out
else:
self.data_out = gr.file_sink(gr.sizeof_gr_complex,
options.data_out)
print "Opened complex data output file: " + options.data_out
else:
self.data_out = None
self.num_inputs = 1
input_rate = self.sample_rate
#title='IF',
#size=(1024,800),
if (options.data_file is not None) and (options.base_band == False):
self.scope = scopesink2.scope_sink_c(
panel,
sample_rate=input_rate,
frame_decim=options.frame_decim,
v_scale=options.v_scale,
t_scale=options.t_scale,
num_inputs=self.num_inputs)
else:
self.scope = scopesink2.scope_sink_f(
panel,
sample_rate=input_rate,
frame_decim=options.frame_decim,
v_scale=options.v_scale,
t_scale=options.t_scale,
num_inputs=self.num_inputs)
#self.di = gr.deinterleave(gr.sizeof_float)
#self.di = gr.complex_to_float(1)
#self.di = gr.complex_to_imag()
#self.dr = gr.complex_to_real()
#self.connect(self.src,self.dr)
#self.connect(self.src,self.di)
#self.null = gr.null_sink(gr.sizeof_double)
#self.connect(self.src,self.di)
#self.connect((self.di,0),(self.scope,0))
#self.connect((self.di,1),(self.scope,1))
#self.connect(self.dr,(self.scope,0))
#self.connect(self.di,(self.scope,1))
self.msgq = gr.msg_queue(2) # queue that holds a maximum of 2 messages
self.queue_watcher = queue_watcher(self.msgq, self.adjust_freq_norm)
#-------------------------------------------------------------------------------
if options.protocol == 0:
# ---------- RD-LAP 19.2 kbps (9600 ksps), 25kHz channel,
print "RD-LAP selected"
self.symbol_rate = 9600 # symbol rate; at 2 bits/symbol this corresponds to 19.2kbps
if options.channel_decim is None:
self.channel_decimation = 10 # decimation (final rate should be at least several symbol rate)
else:
self.channel_decimation = options.channel_decim
self.max_frequency_offset = 12000.0 # coarse carrier tracker leash, ~ half a channel either way
self.symbol_deviation = 1200.0 # this is frequency offset from center of channel to +1 / -1 symbols
self.input_sample_rate = self.sample_rate
self.protocol_processing = fsk4.rdlap_f(
self.msgq,
0) # desired protocol processing block selected here
self.channel_rate = self.input_sample_rate / self.channel_decimation
# channel selection filter characteristics
channel_taps = optfir.low_pass(
1.0, # Filter gain
self.input_sample_rate, # Sample rate
10000, # One-sided modulation bandwidth
12000, # One-sided channel bandwidth
0.1, # Passband ripple
60) # Stopband attenuation
# symbol shaping filter characteristics
symbol_coeffs = gr.firdes.root_raised_cosine(
1.0, # gain
self.channel_rate, # sampling rate
self.symbol_rate, # symbol rate
0.2, # alpha
500) # taps
if options.protocol == 1:
# ---------- APCO-25 C4FM Test Data
print "APCO selected"
self.symbol_rate = 4800 # symbol rate
if options.channel_decim is None:
self.channel_decimation = 20 # decimation
else:
self.channel_decimation = options.channel_decim
self.max_frequency_offset = 6000.0 # coarse carrier tracker leash
self.symbol_deviation = 600.0 # this is frequency offset from center of channel to +1 / -1 symbols
self.input_sample_rate = self.sample_rate
self.protocol_processing = fsk4.apco25_f(self.msgq, 0)
self.channel_rate = self.input_sample_rate / self.channel_decimation
# channel selection filter
if (options.data_file is not None) and (options.base_band
== False):
channel_taps = optfir.low_pass(
1.0, # Filter gain
self.input_sample_rate, # Sample rate
5000, # One-sided modulation bandwidth
6500, # One-sided channel bandwidth
0.2, # Passband ripple (was 0.1)
60) # Stopband attenuation
else:
channel_taps = None
# symbol shaping filter
symbol_coeffs = gr.firdes.root_raised_cosine(
1.0, # gain
self.channel_rate, # sampling rate
self.symbol_rate, # symbol rate
0.2, # alpha
500) # taps
# ----------------- End of setup block
print "Input rate = " + str(self.input_sample_rate)
print "Channel decimation = " + str(self.channel_decimation)
print "Channel rate = " + str(self.channel_rate)
if channel_taps is not None:
self.chan = gr.freq_xlating_fir_filter_ccf(
self.channel_decimation, # Decimation rate
channel_taps, # Filter taps
0.0, # Offset frequency
self.input_sample_rate) # Sample rate
if (options.freq_translation != 0):
print "Channel center frequency = " + str(
options.freq_translation)
self.chan.set_center_freq(options.freq_translation)
else:
self.chan = None
if options.carrier_freq is not None:
print "Carrier frequency = " + str(options.carrier_freq)
self.sig_carrier = gr.sig_source_c(self.channel_rate,
gr.GR_COS_WAVE,
options.carrier_freq, 1, 0)
self.carrier_mul = gr.multiply_vcc(1) # cc(gr.sizeof_gr_complex)
self.connect(self.sig_carrier, (self.carrier_mul, 0))
self.connect(self.chan, (self.carrier_mul, 1))
self.sig_i_carrier = gr.sig_source_f(self.channel_rate,
gr.GR_COS_WAVE,
options.carrier_freq, 1, 0)
self.sig_q_carrier = gr.sig_source_f(self.channel_rate,
gr.GR_COS_WAVE,
options.carrier_freq, 1,
(pi / 2.0))
self.carrier_i_mul = gr.multiply_ff(1)
self.carrier_q_mul = gr.multiply_ff(1)
self.iq_to_float = gr.complex_to_float(1)
self.carrier_iq_add = gr.add_ff(1)
self.connect(self.carrier_mul, self.iq_to_float)
self.connect((self.iq_to_float, 0), (self.carrier_i_mul, 0))
self.connect((self.iq_to_float, 1), (self.carrier_q_mul, 0))
self.connect(self.sig_i_carrier, (self.carrier_i_mul, 1))
self.connect(self.sig_q_carrier, (self.carrier_q_mul, 1))
self.connect(self.carrier_i_mul, (self.carrier_iq_add, 0))
self.connect(self.carrier_q_mul, (self.carrier_iq_add, 1))
else:
self.sig_carrier = None
self.carrier_mul = None
#lf_channel_taps = optfir.low_pass(1.0, # Filter gain
# self.input_sample_rate, # Sample rate
# 2500, # One-sided modulation bandwidth
# 3250, # One-sided channel bandwidth
# 0.1, # Passband ripple (0.1)
# 60, # Stopband attenuation
# 9) # Extra taps (default 2, which doesn't work at 48kHz)
#self.lf = gr.fir_filter_fff(self.channel_decimation, lf_channel_taps)
self.scope2 = scopesink2.scope_sink_f(panel,
sample_rate=self.symbol_rate,
frame_decim=1,
v_scale=2,
t_scale=0.025,
num_inputs=self.num_inputs)
# also note: this specifies the nominal frequency deviation for the 4-level fsk signal
self.fm_demod_gain = self.channel_rate / (2.0 * pi *
self.symbol_deviation)
self.fm_demod = gr.quadrature_demod_cf(self.fm_demod_gain)
symbol_decim = 1
self.symbol_filter = gr.fir_filter_fff(symbol_decim, symbol_coeffs)
# eventually specify: sample rate, symbol rate
self.demod_fsk4 = fsk4.demod_ff(self.msgq, self.channel_rate,
self.symbol_rate)
if (self.chan is not None):
self.connect(self.src, self.chan, self.fm_demod,
self.symbol_filter, self.demod_fsk4,
self.protocol_processing)
if options.wav_out is not None:
print "WAV output gain = " + str(options.wav_out_gain)
self.scaled_wav_data = gr.multiply_const_ff(
float(options.wav_out_gain))
self.connect(self.scaled_wav_data, self.wav_out)
if self.carrier_mul is None:
self.connect(self.fm_demod, self.scaled_wav_data)
else:
self.connect(self.carrier_iq_add, self.scaled_wav_data)
if self.data_out is not None:
if self.carrier_mul is None:
self.connect(self.fm_demod, self.data_out)
else:
self.connect(self.carrier_mul, self.data_out)
# During signal, -4..4
#self.connect(self.fm_demod, self.scope2)
else:
self.connect(self.src, self.symbol_filter, self.demod_fsk4,
self.protocol_processing)
self.connect(self.src, self.scope)
#self.connect(self.lf, self.scope)
self.connect(self.demod_fsk4, self.scope2)
#self.connect(self.symbol_filter, self.scope2)
# --------------- End of most of the 4L-FSK hack & slash
self._build_gui(vbox)
# set initial values
if options.gain is None:
options.gain = 0
self.set_gain(options.gain)
def __init__(self, sample_rate, ber_threshold=0, # Above which to do search ber_smoothing=0, # Alpha of BER smoother (0.01) ber_duration=0, # Length before trying next combo ber_sample_decimation=1, settling_period=0, pre_lock_duration=0, #ber_sample_skip=0 **kwargs): use_throttle = False base_duration = 1024 if sample_rate > 0: use_throttle = True base_duration *= 4 # Has to be high enough for block-delay if ber_threshold == 0: ber_threshold = 512 * 4 if ber_smoothing == 0: ber_smoothing = 0.01 if ber_duration == 0: ber_duration = base_duration * 2 # 1000ms if settling_period == 0: settling_period = base_duration * 1 # 500ms if pre_lock_duration == 0: pre_lock_duration = base_duration * 2 #1000ms print "Creating Auto-FEC:" print "\tsample_rate:\t\t", sample_rate print "\tber_threshold:\t\t", ber_threshold print "\tber_smoothing:\t\t", ber_smoothing print "\tber_duration:\t\t", ber_duration print "\tber_sample_decimation:\t", ber_sample_decimation print "\tsettling_period:\t", settling_period print "\tpre_lock_duration:\t", pre_lock_duration print "" self.sample_rate = sample_rate self.ber_threshold = ber_threshold #self.ber_smoothing = ber_smoothing self.ber_duration = ber_duration self.settling_period = settling_period self.pre_lock_duration = pre_lock_duration #self.ber_sample_skip = ber_sample_skip self.data_lock = threading.Lock() gr.hier_block2.__init__(self, "auto_fec", gr.io_signature(1, 1, gr.sizeof_gr_complex), # Post MPSK-receiver complex input gr.io_signature3(3, 3, gr.sizeof_char, gr.sizeof_float, gr.sizeof_float)) # Decoded packed bytes, BER metric, lock self.input_watcher = auto_fec_input_watcher(self) default_xform = self.input_watcher.xform_lock self.gr_conjugate_cc_0 = gr.conjugate_cc() self.connect((self, 0), (self.gr_conjugate_cc_0, 0)) # Input self.blks2_selector_0 = grc_blks2.selector( item_size=gr.sizeof_gr_complex*1, num_inputs=2, num_outputs=1, input_index=default_xform.get_conjugation_index(), output_index=0, ) self.connect((self.gr_conjugate_cc_0, 0), (self.blks2_selector_0, 0)) self.connect((self, 0), (self.blks2_selector_0, 1)) # Input self.gr_multiply_const_vxx_3 = gr.multiply_const_vcc((0.707*(1+1j), )) self.connect((self.blks2_selector_0, 0), (self.gr_multiply_const_vxx_3, 0)) self.gr_multiply_const_vxx_2 = gr.multiply_const_vcc((default_xform.get_rotation(), )) # phase_mult self.connect((self.gr_multiply_const_vxx_3, 0), (self.gr_multiply_const_vxx_2, 0)) self.gr_complex_to_float_0_0 = gr.complex_to_float(1) self.connect((self.gr_multiply_const_vxx_2, 0), (self.gr_complex_to_float_0_0, 0)) self.gr_interleave_1 = gr.interleave(gr.sizeof_float*1) self.connect((self.gr_complex_to_float_0_0, 1), (self.gr_interleave_1, 1)) self.connect((self.gr_complex_to_float_0_0, 0), (self.gr_interleave_1, 0)) self.gr_multiply_const_vxx_0 = gr.multiply_const_vff((1, )) # invert self.connect((self.gr_interleave_1, 0), (self.gr_multiply_const_vxx_0, 0)) self.baz_delay_2 = baz.delay(gr.sizeof_float*1, default_xform.get_puncture_delay()) # delay_puncture self.connect((self.gr_multiply_const_vxx_0, 0), (self.baz_delay_2, 0)) self.depuncture_ff_0 = baz.depuncture_ff((_puncture_matrices[self.input_watcher.puncture_matrix][1])) # puncture_matrix self.connect((self.baz_delay_2, 0), (self.depuncture_ff_0, 0)) self.baz_delay_1 = baz.delay(gr.sizeof_float*1, default_xform.get_viterbi_delay()) # delay_viterbi self.connect((self.depuncture_ff_0, 0), (self.baz_delay_1, 0)) self.swap_ff_0 = baz.swap_ff(default_xform.get_viterbi_swap()) # swap_viterbi self.connect((self.baz_delay_1, 0), (self.swap_ff_0, 0)) self.gr_decode_ccsds_27_fb_0 = gr.decode_ccsds_27_fb() if use_throttle: print "==> Using throttle at sample rate:", self.sample_rate self.gr_throttle_0 = gr.throttle(gr.sizeof_float, self.sample_rate) self.connect((self.swap_ff_0, 0), (self.gr_throttle_0, 0)) self.connect((self.gr_throttle_0, 0), (self.gr_decode_ccsds_27_fb_0, 0)) else: self.connect((self.swap_ff_0, 0), (self.gr_decode_ccsds_27_fb_0, 0)) self.connect((self.gr_decode_ccsds_27_fb_0, 0), (self, 0)) # Output bytes self.gr_add_const_vxx_1 = gr.add_const_vff((-4096, )) self.connect((self.gr_decode_ccsds_27_fb_0, 1), (self.gr_add_const_vxx_1, 0)) self.gr_multiply_const_vxx_1 = gr.multiply_const_vff((-1, )) self.connect((self.gr_add_const_vxx_1, 0), (self.gr_multiply_const_vxx_1, 0)) self.connect((self.gr_multiply_const_vxx_1, 0), (self, 1)) # Output BER self.gr_single_pole_iir_filter_xx_0 = gr.single_pole_iir_filter_ff(ber_smoothing, 1) self.connect((self.gr_multiply_const_vxx_1, 0), (self.gr_single_pole_iir_filter_xx_0, 0)) self.gr_keep_one_in_n_0 = blocks.keep_one_in_n(gr.sizeof_float, ber_sample_decimation) self.connect((self.gr_single_pole_iir_filter_xx_0, 0), (self.gr_keep_one_in_n_0, 0)) self.const_source_x_0 = gr.sig_source_f(0, gr.GR_CONST_WAVE, 0, 0, 0) # Last param is const value if use_throttle: lock_throttle_rate = self.sample_rate // 16 print "==> Using lock throttle rate:", lock_throttle_rate self.gr_throttle_1 = gr.throttle(gr.sizeof_float, lock_throttle_rate) self.connect((self.const_source_x_0, 0), (self.gr_throttle_1, 0)) self.connect((self.gr_throttle_1, 0), (self, 2)) else: self.connect((self.const_source_x_0, 0), (self, 2)) self.msg_q = gr.msg_queue(2*256) # message queue that holds at most 2 messages, increase to speed up process self.msg_sink = gr.message_sink(gr.sizeof_float, self.msg_q, dont_block=0) # Block to speed up process self.connect((self.gr_keep_one_in_n_0, 0), self.msg_sink) self.input_watcher.start()
def __init__(
self,
sample_rate,
ber_threshold=0, # Above which to do search
ber_smoothing=0, # Alpha of BER smoother (0.01)
ber_duration=0, # Length before trying next combo
ber_sample_decimation=1,
settling_period=0,
pre_lock_duration=0,
#ber_sample_skip=0
**kwargs):
use_throttle = False
base_duration = 1024
if sample_rate > 0:
use_throttle = True
base_duration *= 4 # Has to be high enough for block-delay
if ber_threshold == 0:
ber_threshold = 512 * 4
if ber_smoothing == 0:
ber_smoothing = 0.01
if ber_duration == 0:
ber_duration = base_duration * 2 # 1000ms
if settling_period == 0:
settling_period = base_duration * 1 # 500ms
if pre_lock_duration == 0:
pre_lock_duration = base_duration * 2 #1000ms
print "Creating Auto-FEC:"
print "\tsample_rate:\t\t", sample_rate
print "\tber_threshold:\t\t", ber_threshold
print "\tber_smoothing:\t\t", ber_smoothing
print "\tber_duration:\t\t", ber_duration
print "\tber_sample_decimation:\t", ber_sample_decimation
print "\tsettling_period:\t", settling_period
print "\tpre_lock_duration:\t", pre_lock_duration
print ""
self.sample_rate = sample_rate
self.ber_threshold = ber_threshold
#self.ber_smoothing = ber_smoothing
self.ber_duration = ber_duration
self.settling_period = settling_period
self.pre_lock_duration = pre_lock_duration
#self.ber_sample_skip = ber_sample_skip
self.data_lock = threading.Lock()
gr.hier_block2.__init__(
self,
"auto_fec",
gr.io_signature(
1, 1,
gr.sizeof_gr_complex), # Post MPSK-receiver complex input
gr.io_signature3(
3, 3, gr.sizeof_char, gr.sizeof_float,
gr.sizeof_float)) # Decoded packed bytes, BER metric, lock
self.input_watcher = auto_fec_input_watcher(self)
default_xform = self.input_watcher.xform_lock
self.gr_conjugate_cc_0 = gr.conjugate_cc()
self.connect((self, 0), (self.gr_conjugate_cc_0, 0)) # Input
self.blks2_selector_0 = grc_blks2.selector(
item_size=gr.sizeof_gr_complex * 1,
num_inputs=2,
num_outputs=1,
input_index=default_xform.get_conjugation_index(),
output_index=0,
)
self.connect((self.gr_conjugate_cc_0, 0), (self.blks2_selector_0, 0))
self.connect((self, 0), (self.blks2_selector_0, 1)) # Input
self.gr_multiply_const_vxx_3 = gr.multiply_const_vcc(
(0.707 * (1 + 1j), ))
self.connect((self.blks2_selector_0, 0),
(self.gr_multiply_const_vxx_3, 0))
self.gr_multiply_const_vxx_2 = gr.multiply_const_vcc(
(default_xform.get_rotation(), )) # phase_mult
self.connect((self.gr_multiply_const_vxx_3, 0),
(self.gr_multiply_const_vxx_2, 0))
self.gr_complex_to_float_0_0 = gr.complex_to_float(1)
self.connect((self.gr_multiply_const_vxx_2, 0),
(self.gr_complex_to_float_0_0, 0))
self.gr_interleave_1 = gr.interleave(gr.sizeof_float * 1)
self.connect((self.gr_complex_to_float_0_0, 1),
(self.gr_interleave_1, 1))
self.connect((self.gr_complex_to_float_0_0, 0),
(self.gr_interleave_1, 0))
self.gr_multiply_const_vxx_0 = gr.multiply_const_vff((1, )) # invert
self.connect((self.gr_interleave_1, 0),
(self.gr_multiply_const_vxx_0, 0))
self.baz_delay_2 = baz.delay(
gr.sizeof_float * 1,
default_xform.get_puncture_delay()) # delay_puncture
self.connect((self.gr_multiply_const_vxx_0, 0), (self.baz_delay_2, 0))
self.depuncture_ff_0 = baz.depuncture_ff(
(_puncture_matrices[self.input_watcher.puncture_matrix][1]
)) # puncture_matrix
self.connect((self.baz_delay_2, 0), (self.depuncture_ff_0, 0))
self.baz_delay_1 = baz.delay(
gr.sizeof_float * 1,
default_xform.get_viterbi_delay()) # delay_viterbi
self.connect((self.depuncture_ff_0, 0), (self.baz_delay_1, 0))
self.swap_ff_0 = baz.swap_ff(
default_xform.get_viterbi_swap()) # swap_viterbi
self.connect((self.baz_delay_1, 0), (self.swap_ff_0, 0))
self.gr_decode_ccsds_27_fb_0 = gr.decode_ccsds_27_fb()
if use_throttle:
print "==> Using throttle at sample rate:", self.sample_rate
self.gr_throttle_0 = gr.throttle(gr.sizeof_float, self.sample_rate)
self.connect((self.swap_ff_0, 0), (self.gr_throttle_0, 0))
self.connect((self.gr_throttle_0, 0),
(self.gr_decode_ccsds_27_fb_0, 0))
else:
self.connect((self.swap_ff_0, 0),
(self.gr_decode_ccsds_27_fb_0, 0))
self.connect((self.gr_decode_ccsds_27_fb_0, 0),
(self, 0)) # Output bytes
self.gr_add_const_vxx_1 = gr.add_const_vff((-4096, ))
self.connect((self.gr_decode_ccsds_27_fb_0, 1),
(self.gr_add_const_vxx_1, 0))
self.gr_multiply_const_vxx_1 = gr.multiply_const_vff((-1, ))
self.connect((self.gr_add_const_vxx_1, 0),
(self.gr_multiply_const_vxx_1, 0))
self.connect((self.gr_multiply_const_vxx_1, 0),
(self, 1)) # Output BER
self.gr_single_pole_iir_filter_xx_0 = gr.single_pole_iir_filter_ff(
ber_smoothing, 1)
self.connect((self.gr_multiply_const_vxx_1, 0),
(self.gr_single_pole_iir_filter_xx_0, 0))
self.gr_keep_one_in_n_0 = blocks.keep_one_in_n(gr.sizeof_float,
ber_sample_decimation)
self.connect((self.gr_single_pole_iir_filter_xx_0, 0),
(self.gr_keep_one_in_n_0, 0))
self.const_source_x_0 = gr.sig_source_f(0, gr.GR_CONST_WAVE, 0, 0,
0) # Last param is const value
if use_throttle:
lock_throttle_rate = self.sample_rate // 16
print "==> Using lock throttle rate:", lock_throttle_rate
self.gr_throttle_1 = gr.throttle(gr.sizeof_float,
lock_throttle_rate)
self.connect((self.const_source_x_0, 0), (self.gr_throttle_1, 0))
self.connect((self.gr_throttle_1, 0), (self, 2))
else:
self.connect((self.const_source_x_0, 0), (self, 2))
self.msg_q = gr.msg_queue(
2 * 256
) # message queue that holds at most 2 messages, increase to speed up process
self.msg_sink = gr.message_sink(
gr.sizeof_float, self.msg_q,
dont_block=0) # Block to speed up process
self.connect((self.gr_keep_one_in_n_0, 0), self.msg_sink)
self.input_watcher.start()
def complex_to_float(N):
op = gr.complex_to_float()
tb = helper(N, op, gr.sizeof_gr_complex, gr.sizeof_float, 1, 2)
return tb
