def test_descriptor_001(self):
src_data = range(1000)
expected_result = range(1000)
filename = "tmp.32f"
fhandle0 = open(filename, "wb")
fd0 = fhandle0.fileno()
src = blocks.vector_source_f(src_data)
snk = blocks.file_descriptor_sink(gr.sizeof_float, fd0)
self.tb.connect(src, snk)
self.tb.run()
os.fsync(fd0)
fhandle0.close()
fhandle1 = open(filename, "rb")
fd1 = fhandle1.fileno()
src2 = blocks.file_descriptor_source(gr.sizeof_float, fd1, False)
snk2 = blocks.vector_sink_f()
self.tb.disconnect(src, snk)
self.tb.connect(src2, snk2)
self.tb.run()
os.fsync(fd1)
fhandle1.close()
os.remove(filename)
result_data = snk2.data()
self.assertFloatTuplesAlmostEqual(expected_result, result_data)
def test_file_descriptor(self):
src_data = range(1000)
expected_result = range(1000)
snk2 = blocks.vector_sink_f()
with tempfile.NamedTemporaryFile() as temp:
fhandle0 = open(temp.name, "wb")
fd0 = fhandle0.fileno()
src = blocks.vector_source_f(src_data)
snk = blocks.file_descriptor_sink(gr.sizeof_float, fd0)
self.tb.connect(src, snk)
self.tb.run()
os.fsync(fd0)
fhandle0.close()
fhandle1 = open(temp.name, "rb")
fd1 = fhandle1.fileno()
src2 = blocks.file_descriptor_source(gr.sizeof_float, fd1, False)
self.tb.disconnect(src, snk)
self.tb.connect(src2, snk2)
self.tb.run()
os.fsync(fd1)
fhandle1.close()
result_data = snk2.data()
self.assertFloatTuplesAlmostEqual(expected_result, result_data)
self.assertEqual(len(snk2.tags()), 0)
def init_audio(self, config):
filename = config['args'].replace('audio:', '')
if filename.startswith('file:'):
filename = filename.replace('file:', '')
repeat = False
s2f = blocks.short_to_float()
K = 1 / 32767.0
src = blocks.multiply_const_ff(K)
throttle = blocks.throttle(
gr.sizeof_short,
self.sample_rate) # may be redundant in stdin case ?
if filename == '-':
fd = 0 # stdin
fsrc = blocks.file_descriptor_source(gr.sizeof_short, fd,
repeat)
else:
fsrc = blocks.file_source(gr.sizeof_short, filename, repeat)
self.tb.connect(fsrc, throttle, s2f, src)
else:
src = audio.source(self.sample_rate, filename)
gain = 1.0
if config['gains'].startswith('audio:'):
gain = float(config['gains'].replace('audio:', ''))
self.src = blocks.multiply_const_ff(gain)
self.tb.connect(src, self.src)
def test_file_descriptor(self):
src_data = range(1000)
expected_result = range(1000)
snk2 = blocks.vector_sink_f()
with tempfile.NamedTemporaryFile() as temp:
fhandle0 = open(temp.name, "wb")
fd0 = fhandle0.fileno()
src = blocks.vector_source_f(src_data)
snk = blocks.file_descriptor_sink(gr.sizeof_float, fd0)
self.tb.connect(src, snk)
self.tb.run()
os.fsync(fd0)
fhandle0.close()
fhandle1 = open(temp.name, "rb")
fd1 = fhandle1.fileno()
src2 = blocks.file_descriptor_source(gr.sizeof_float, fd1, False)
self.tb.disconnect(src, snk)
self.tb.connect(src2, snk2)
self.tb.run()
os.fsync(fd1)
fhandle1.close()
result_data = snk2.data()
self.assertFloatTuplesAlmostEqual(expected_result, result_data)
self.assertEqual(len(snk2.tags()), 0)
def __init__(self, itemsize, addr, port, server=True):
# init hier block
gr.hier_block2.__init__(
self, 'tcp_source',
gr.io_signature(0, 0, 0),
gr.io_signature(1, 1, itemsize),
)
fd = _get_sock_fd(addr, port, server)
self.connect(blocks.file_descriptor_source(itemsize, fd), self)
def __init__(self, itemsize, addr, port, server=True):
#init hier block
gr.hier_block2.__init__(
self, 'tcp_source',
gr.io_signature(0, 0, 0),
gr.io_signature(1, 1, itemsize),
)
fd = _get_sock_fd(addr, port, server)
self.connect(blocks.file_descriptor_source(itemsize, fd), self)
def test_file_descriptor_source():
tmp_f = tempfile.TemporaryFile()
array.array('f', [random.random() for _ in range(262144)]).tofile(tmp_f)
tmp_f.seek(0)
top = gr.top_block()
src = blocks.file_descriptor_source(gr.sizeof_float, os.dup(tmp_f.fileno()), True)
probe = blocks.probe_rate(gr.sizeof_float)
top.connect(src, probe)
return top, probe
def test_file_descriptor_source():
tmp_f = tempfile.TemporaryFile()
array.array('f', [random.random() for _ in range(262144)]).tofile(tmp_f)
tmp_f.seek(0)
top = gr.top_block()
src = blocks.file_descriptor_source(gr.sizeof_float, os.dup(tmp_f.fileno()), True)
probe = blocks.probe_rate(gr.sizeof_float)
top.connect(src, probe)
return top, probe
def __init__(self, addr, port, rate, freq1, freq2, corr):
gr.hier_block2.__init__(
self,
name = "red_pitaya_source",
input_signature = gr.io_signature(0, 0, 0),
output_signature = gr.io_signature(1, 1, gr.sizeof_gr_complex)
)
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock.connect((addr, port))
fd = os.dup(self.sock.fileno())
self.connect(blocks.file_descriptor_source(gr.sizeof_gr_complex, fd), self)
self.set_rate(rate)
self.set_freq1(freq1, corr)
self.set_freq2(freq2, corr)
def __init__(self, addr, port, freq, corr):
gr.hier_block2.__init__(self,
name="red_pitaya_source",
input_signature=gr.io_signature(0, 0, 0),
output_signature=gr.io_signature(
1, 1, gr.sizeof_gr_complex))
self.ctrl_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.ctrl_sock.connect((addr, port))
self.ctrl_sock.send(struct.pack('<I', 0))
self.data_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.data_sock.connect((addr, port))
self.data_sock.send(struct.pack('<I', 1))
fd = os.dup(self.data_sock.fileno())
self.connect(blocks.file_descriptor_source(gr.sizeof_gr_complex, fd),
self)
self.set_freq(freq, corr)
def __init__(self, addr, port, freq, corr):
gr.hier_block2.__init__(
self,
name = "red_pitaya_source",
input_signature = gr.io_signature(0, 0, 0),
output_signature = gr.io_signature(1, 1, gr.sizeof_gr_complex)
)
self.ctrl_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.ctrl_sock.connect((addr, port))
self.ctrl_sock.send(struct.pack('<I', 0))
self.data_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.data_sock.connect((addr, port))
self.data_sock.send(struct.pack('<I', 1))
fd = os.dup(self.data_sock.fileno())
self.connect(blocks.file_descriptor_source(gr.sizeof_gr_complex, fd), self)
self.set_freq(freq, corr)
def _tcp_client(self):
dst = blocks.vector_sink_s()
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
for t in (0, 0.2):
# wait until server listens
sleep(t)
try:
sock.connect((self.addr, self.port))
except socket.error as e:
if e.errno != 111:
raise
continue
break
fd = os.dup(sock.fileno())
self.tb_rcv.connect(blocks.file_descriptor_source(self.itemsize, fd), dst)
self.tb_rcv.run()
self.assertEqual(self.data, dst.data())
def _tcp_client(self):
dst = blocks.vector_sink_s()
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
for t in (0, 0.2):
# wait until server listens
sleep(t)
try:
sock.connect((self.addr, self.port))
except socket.error as e:
if e.errno != 111:
raise
continue
break
fd = os.dup(sock.fileno())
self.tb_rcv.connect(blocks.file_descriptor_source(self.itemsize, fd),
dst)
self.tb_rcv.run()
self.assertEqual(self.data, dst.data())
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="Dvbc Tx Wxgui")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Variables
##################################################
self._symrate_config = ConfigParser.ConfigParser()
self._symrate_config.read('./dvbc.conf')
try:
symrate = self._symrate_config.getint('dvbc', 'symbolrate')
except:
symrate = 0
self.symrate = symrate
self._mode_config = ConfigParser.ConfigParser()
self._mode_config.read('./dvbc.conf')
try:
mode = self._mode_config.get('dvbc', 'mode')
except:
mode = 0
self.mode = mode
self._center_freq_config = ConfigParser.ConfigParser()
self._center_freq_config.read('./dvbc.conf')
try:
center_freq = self._center_freq_config.getint(
'hackrf', 'frequency')
except:
center_freq = 0
self.center_freq = center_freq
self.samp_rate = samp_rate = symrate * 2
self.rrc_taps = rrc_taps = 100
self._rf_gain_config = ConfigParser.ConfigParser()
self._rf_gain_config.read('./dvbc.conf')
try:
rf_gain = self._rf_gain_config.getint('hackrf', 'rf-gain')
except:
rf_gain = 0
self.rf_gain = rf_gain
self._if_gain_config = ConfigParser.ConfigParser()
self._if_gain_config.read('./dvbc.conf')
try:
if_gain = self._if_gain_config.getint('hackrf', 'if-gain')
except:
if_gain = 0
self.if_gain = if_gain
self.anz0 = anz0 = str(
center_freq / 1000000) + "MHZ / " + mode + " / " + str(
symrate / 1000) + " kSym/s"
infile = str(sys.argv[1])
if mode == "16QAM":
mod = dvbc.MOD_16QAM
elif mode == "32QAM":
mod = dvbc.MOD_32QAM
elif mode == "64QAM":
mod = dvbc.MOD_64QAM
elif mode == "128QAM":
mod = dvbc.MOD_128QAM
elif mode == "256QAM":
mod = dvbc.MOD_256QAM
else:
sys.stderr.write(
"MODE IN CONFIG WRONG! Values: 16QAM, 32QAM, 64QAM, 128QAM or 256QAM \n"
)
sys.exit(1)
print "Frequency: ", center_freq / 1000000, "Mhz / Mode: ", mode, "/ Symbolrate: ", symrate / 1000, "\n"
##################################################
# Blocks
##################################################
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=center_freq,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title='FFT Plot',
peak_hold=False,
)
self.Add(self.wxgui_fftsink2_0.win)
self.osmosdr_sink_1 = osmosdr.sink(args="numchan=" + str(1) + " " +
'hackrf,buffers=128,buflen=32768')
self.osmosdr_sink_1.set_sample_rate(samp_rate)
self.osmosdr_sink_1.set_center_freq(center_freq, 0)
self.osmosdr_sink_1.set_freq_corr(0, 0)
self.osmosdr_sink_1.set_gain(rf_gain, 0)
self.osmosdr_sink_1.set_if_gain(if_gain, 0)
self.osmosdr_sink_1.set_bb_gain(0, 0)
self.osmosdr_sink_1.set_antenna('', 0)
self.osmosdr_sink_1.set_bandwidth(8750000, 0)
self.fft_filter_xxx_0 = filter.fft_filter_ccc(
1, (firdes.root_raised_cosine(0.85, samp_rate, samp_rate / 2, 0.15,
rrc_taps)), 1)
self.fft_filter_xxx_0.declare_sample_delay(0)
self.dvbc_symbolmapper_bb_0 = dvbc.symbolmapper_bb(mod)
self.dvbc_modulator_bc_0 = dvbc.modulator_bc(mod)
self.dtv_dvbt_reed_solomon_enc_0 = dtv.dvbt_reed_solomon_enc(
2, 8, 0x11d, 255, 239, 8, 51, 8)
self.dtv_dvbt_energy_dispersal_0 = dtv.dvbt_energy_dispersal(1)
self.dtv_dvbt_convolutional_interleaver_0 = dtv.dvbt_convolutional_interleaver(
136, 12, 17)
if infile == "-":
self.blocks_file_descriptor_source_0 = blocks.file_descriptor_source(
gr.sizeof_char * 1, 0, True)
else:
self.blocks_file_source_0 = blocks.file_source(
gr.sizeof_char * 1, infile, True)
self._anz0_static_text = forms.static_text(
parent=self.GetWin(),
value=self.anz0,
callback=self.set_anz0,
label='Parameter',
converter=forms.str_converter(),
)
self.Add(self._anz0_static_text)
##################################################
# Connections
##################################################
if infile == "-":
self.connect((self.blocks_file_descriptor_source_0, 0),
(self.dtv_dvbt_energy_dispersal_0, 0))
else:
self.connect((self.blocks_file_source_0, 0),
(self.dtv_dvbt_energy_dispersal_0, 0))
self.connect((self.dtv_dvbt_convolutional_interleaver_0, 0),
(self.dvbc_symbolmapper_bb_0, 0))
self.connect((self.dtv_dvbt_energy_dispersal_0, 0),
(self.dtv_dvbt_reed_solomon_enc_0, 0))
self.connect((self.dtv_dvbt_reed_solomon_enc_0, 0),
(self.dtv_dvbt_convolutional_interleaver_0, 0))
self.connect((self.dvbc_modulator_bc_0, 0), (self.fft_filter_xxx_0, 0))
self.connect((self.dvbc_symbolmapper_bb_0, 0),
(self.dvbc_modulator_bc_0, 0))
self.connect((self.fft_filter_xxx_0, 0), (self.osmosdr_sink_1, 0))
self.connect((self.fft_filter_xxx_0, 0), (self.wxgui_fftsink2_0, 0))
def __init__(self):
gr.top_block.__init__(self, "Dvbt2 Master")
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = (8000000.0 * 8) / 7
self._rf_gain_config = ConfigParser.ConfigParser()
self._rf_gain_config.read('./dvbt2.conf')
try:
rf_gain = self._rf_gain_config.getint('hackrf', 'rf-gain')
except:
rf_gain = 0
self.rf_gain = rf_gain
self._if_gain_config = ConfigParser.ConfigParser()
self._if_gain_config.read('./dvbt2.conf')
try:
if_gain = self._if_gain_config.getint('hackrf', 'if-gain')
except:
if_gain = 0
self.if_gain = if_gain
self._center_freq_config = ConfigParser.ConfigParser()
self._center_freq_config.read('./dvbt2.conf')
try:
center_freq = self._center_freq_config.getint(
'hackrf', 'frequency')
except:
center_freq = 0
self.center_freq = center_freq
self._band_width_config = ConfigParser.ConfigParser()
self._band_width_config.read('./dvbt2.conf')
try:
band_width = self._band_width_config.getint('hackrf', 'bandwidth')
except:
band_width = 0
self.band_width = band_width
self._VERSION_config = ConfigParser.ConfigParser()
self._VERSION_config.read('./dvbt2.conf')
try:
VERSION = self._VERSION_config.getint('dvbt2', 'version')
except:
VERSION = 0
self.VERSION = VERSION
self._PREAMBLE_config = ConfigParser.ConfigParser()
self._PREAMBLE_config.read('./dvbt2.conf')
try:
PREAMBLE = self._PREAMBLE_config.get('dvbt2', 'preamble')
except:
PREAMBLE = '0'
self.PREAMBLE = PREAMBLE
self._PILOT_config = ConfigParser.ConfigParser()
self._PILOT_config.read('./dvbt2.conf')
try:
PILOT = self._PILOT_config.getint('dvbt2', 'pilot-pattern')
except:
PILOT = 0
self.PILOT = PILOT
self._PAPR_config = ConfigParser.ConfigParser()
self._PAPR_config.read('./dvbt2.conf')
try:
PAPR = self._PAPR_config.get('dvbt2', 'papr')
except:
PAPR = '0'
self.PAPR = PAPR
self._L1MOD_config = ConfigParser.ConfigParser()
self._L1MOD_config.read('./dvbt2.conf')
try:
L1MOD = self._L1MOD_config.get('dvbt2', 'L1-mod')
except:
L1MOD = '0'
self.L1MOD = L1MOD
self._GI_config = ConfigParser.ConfigParser()
self._GI_config.read('./dvbt2.conf')
try:
GI = self._GI_config.get('dvbt2', 'guard-interval')
except:
GI = '0'
self.GI = GI
self._FFTSIZE_config = ConfigParser.ConfigParser()
self._FFTSIZE_config.read('./dvbt2.conf')
try:
FFTSIZE = self._FFTSIZE_config.get('dvbt2', 'fft-size')
except:
FFTSIZE = '0'
self.FFTSIZE = FFTSIZE
self._FECBLKS_config = ConfigParser.ConfigParser()
self._FECBLKS_config.read('./dvbt2.conf')
try:
FECBLKS = self._FECBLKS_config.getint('dvbt2', 'fec-blocks')
except:
FECBLKS = 0
self.FECBLKS = FECBLKS
self._DATASYM_config = ConfigParser.ConfigParser()
self._DATASYM_config.read('./dvbt2.conf')
try:
DATASYM = self._DATASYM_config.getint('dvbt2', 'datasymbols')
except:
DATASYM = 0
self.DATASYM = DATASYM
self._CONSTELLATION_config = ConfigParser.ConfigParser()
self._CONSTELLATION_config.read('./dvbt2.conf')
try:
CONSTELLATION = self._CONSTELLATION_config.get(
'dvbt2', 'constellation')
except:
CONSTELLATION = '0'
self.CONSTELLATION = CONSTELLATION
self._CODERATE_config = ConfigParser.ConfigParser()
self._CODERATE_config.read('./dvbt2.conf')
try:
CODERATE = self._CODERATE_config.get('dvbt2', 'coderate')
except:
CODERATE = '0'
self.CODERATE = CODERATE
self._CARREXT_config = ConfigParser.ConfigParser()
self._CARREXT_config.read('./dvbt2.conf')
try:
CARREXT = self._CARREXT_config.get('dvbt2', 'ext-carriers')
except:
CARREXT = '0'
self.CARREXT = CARREXT
infile = str(sys.argv[1])
if VERSION == 111:
ver = dtv.VERSION_111
elif VERSION == 131:
ver = dtv.VERSION_131
else:
sys.stderr.write("VERSION IN CONFIG WRONG! Values: 111 or 131 \n")
sys.exit(1)
if PREAMBLE == "SISO":
preamb = dtv.PREAMBLE_T2_SISO
elif PREAMBLE == "MISO":
preamb = dtv.PREAMBLE_T2_MISO
else:
sys.stderr.write(
"PREAMBLE IN CONFIG WRONG! Values: SISO or MISO \n")
sys.exit(1)
if PILOT == 1:
pil = dtv.PILOT_PP1
elif PILOT == 2:
pil = dtv.PILOT_PP2
elif PILOT == 3:
pil = dtv.PILOT_PP3
elif PILOT == 4:
pil = dtv.PILOT_PP4
elif PILOT == 5:
pil = dtv.PILOT_PP5
elif PILOT == 6:
pil = dtv.PILOT_PP6
elif PILOT == 7:
pil = dtv.PILOT_PP7
elif PILOT == 8:
pil = dtv.PILOT_PP8
else:
sys.stderr.write(
"PILOT-PATTERN IN CONFIG WRONG! Values: 1, 2, 3, 4, 5, 6, 7 or 8 \n"
)
sys.exit(1)
if PAPR == "on":
pap = dtv.PAPR_ON
elif PAPR == "off":
pap = dtv.PAPR_OFF
else:
sys.stderr.write("PAPR IN CONFIG WRONG! Values: on or off \n")
sys.exit(1)
if L1MOD == "QPSK":
l1m = dtv.L1_MOD_QPSK
elif L1MOD == "BPSK":
l1m = dtv.L1_MOD_BPSK
elif L1MOD == "16QAM":
l1m = dtv.L1_MOD_16QAM
elif L1MOD == "64QAM":
l1m = dtv.L1_MOD_64QAM
else:
sys.stderr.write(
"L1-MOD IN CONFIG WRONG! Values: QPSK, BPSK, 16QAM or 64QAM \n"
)
sys.exit(1)
if GI == "1/32":
gint = dtv.GI_1_32
mul = 1
div = 32
elif GI == "1/16":
gint = dtv.GI_1_16
mul = 1
div = 16
elif GI == "1/8":
gint = dtv.GI_1_8
mul = 1
div = 8
elif GI == "1/4":
gint = dtv.GI_1_4
mul = 1
div = 4
elif GI == "1/128":
gint = dtv.GI_1_128
mul = 1
div = 128
elif GI == "19/128":
gint = dtv.GI_19_128
mul = 19
div = 128
elif GI == "19/256":
gint = dtv.GI_19_256
mul = 19
div = 256
else:
sys.stderr.write(
"GUARD-INTERVAL IN CONFIG WRONG! Values: 1/32, 1/16, 1/8, 1/4, 1/128, 19/128, 19/256 \n"
)
sys.exit(1)
if FFTSIZE == "16k":
ffts = dtv.FFTSIZE_16K
fft_length = 16384
elif FFTSIZE == "32k":
ffts = dtv.FFTSIZE_32K
fft_length = 32768
else:
sys.stderr.write("FFTSIZE IN CONFIG WRONG! Values: 16k or 32k \n")
sys.exit(1)
if CONSTELLATION == "QPSK":
const = dtv.MOD_QPSK
elif CONSTELLATION == "16QAM":
const = dtv.MOD_16QAM
elif CONSTELLATION == "64QAM":
const = dtv.MOD_64QAM
elif CONSTELLATION == "256QAM":
const = dtv.MOD_256QAM
else:
sys.stderr.write(
"CONSTELLATION IN CONFIG WRONG! Values: QPSK 16QAM 64QAM 256QAM \n"
)
sys.exit(1)
if CODERATE == "1/2":
codr = dtv.C1_2
elif CODERATE == "2/5":
codr = dtv.C2_5
elif CODERATE == "3/5":
codr = dtv.C3_5
elif CODERATE == "2/3":
codr = dtv.C2_3
elif CODERATE == "3/4":
codr = dtv.C3_4
elif CODERATE == "4/5":
codr = dtv.C4_5
elif CODERATE == "5/6":
codr = dtv.C5_6
else:
sys.stderr.write(
"CODERATE IN CONFIG WRONG! Values: 1/2 2/5 3/5 2/3 3/4 4/5 5/6 \n"
)
sys.exit(1)
if CARREXT == "on":
extcarr = dtv.CARRIERS_EXTENDED
elif CARREXT == "off":
extcarr = dtv.CARRIERS_NORMAL
else:
sys.stderr.write(
"EXT-CARRIERS IN CONFIG WRONG! Values: on or off \n")
sys.exit(1)
cp_length = fft_length + (fft_length * mul) / div
##################################################
# Blocks
##################################################
self.osmosdr_sink_0 = osmosdr.sink(args="numchan=" + str(1) + " " +
'hackrf,buffers=128,buflen=32768')
self.osmosdr_sink_0.set_sample_rate(samp_rate)
self.osmosdr_sink_0.set_center_freq(center_freq, 0)
self.osmosdr_sink_0.set_freq_corr(0, 0)
self.osmosdr_sink_0.set_gain(rf_gain, 0)
self.osmosdr_sink_0.set_if_gain(if_gain, 0)
self.osmosdr_sink_0.set_bb_gain(0, 0)
self.osmosdr_sink_0.set_antenna('', 0)
self.osmosdr_sink_0.set_bandwidth(band_width, 0)
self.dtv_dvbt2_pilotgenerator_cc_0 = dtv.dvbt2_pilotgenerator_cc(
extcarr, ffts, pil, gint, DATASYM, pap, ver, preamb, dtv.MISO_TX1,
dtv.EQUALIZATION_OFF, dtv.BANDWIDTH_8_0_MHZ, fft_length)
self.dtv_dvbt2_p1insertion_cc_0 = dtv.dvbt2_p1insertion_cc(
extcarr, ffts, gint, DATASYM, preamb, dtv.SHOWLEVELS_OFF, 3.3)
self.dtv_dvbt2_modulator_bc_0 = dtv.dvbt2_modulator_bc(
dtv.FECFRAME_NORMAL, const, dtv.ROTATION_OFF)
self.dtv_dvbt2_interleaver_bb_0 = dtv.dvbt2_interleaver_bb(
dtv.FECFRAME_NORMAL, codr, const)
self.dtv_dvbt2_freqinterleaver_cc_0 = dtv.dvbt2_freqinterleaver_cc(
extcarr, ffts, pil, gint, DATASYM, pap, ver, preamb)
self.dtv_dvbt2_framemapper_cc_0 = dtv.dvbt2_framemapper_cc(
dtv.FECFRAME_NORMAL, codr, const, dtv.ROTATION_OFF, FECBLKS, 3,
extcarr, ffts, gint, l1m, pil, 2, DATASYM, pap, ver, preamb,
dtv.INPUTMODE_NORMAL, dtv.RESERVED_OFF, dtv.L1_SCRAMBLED_OFF,
dtv.INBAND_OFF)
self.dtv_dvbt2_cellinterleaver_cc_0 = dtv.dvbt2_cellinterleaver_cc(
dtv.FECFRAME_NORMAL, const, FECBLKS, 3)
self.dtv_dvb_ldpc_bb_0 = dtv.dvb_ldpc_bb(dtv.STANDARD_DVBT2,
dtv.FECFRAME_NORMAL, codr,
dtv.MOD_OTHER)
self.dtv_dvb_bch_bb_0 = dtv.dvb_bch_bb(dtv.STANDARD_DVBT2,
dtv.FECFRAME_NORMAL, codr)
self.dtv_dvb_bbscrambler_bb_0 = dtv.dvb_bbscrambler_bb(
dtv.STANDARD_DVBT2, dtv.FECFRAME_NORMAL, codr)
self.dtv_dvb_bbheader_bb_0 = dtv.dvb_bbheader_bb(
dtv.STANDARD_DVBT2, dtv.FECFRAME_NORMAL, codr, dtv.RO_0_35,
dtv.INPUTMODE_HIEFF, dtv.INBAND_OFF, 168, 4000000)
self.digital_ofdm_cyclic_prefixer_0 = digital.ofdm_cyclic_prefixer(
fft_length, cp_length, 0, '')
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vcc((0.2, ))
if infile == "-":
self.blocks_file_descriptor_source_0 = blocks.file_descriptor_source(
gr.sizeof_char * 1, 0, True)
else:
self.blocks_file_source_0 = blocks.file_source(
gr.sizeof_char * 1, infile, True)
##################################################
# Connections
##################################################
if infile == "-":
self.connect((self.blocks_file_descriptor_source_0, 0),
(self.dtv_dvb_bbheader_bb_0, 0))
else:
self.connect((self.blocks_file_source_0, 0),
(self.dtv_dvb_bbheader_bb_0, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0),
(self.osmosdr_sink_0, 0))
self.connect((self.digital_ofdm_cyclic_prefixer_0, 0),
(self.dtv_dvbt2_p1insertion_cc_0, 0))
self.connect((self.dtv_dvb_bbheader_bb_0, 0),
(self.dtv_dvb_bbscrambler_bb_0, 0))
self.connect((self.dtv_dvb_bbscrambler_bb_0, 0),
(self.dtv_dvb_bch_bb_0, 0))
self.connect((self.dtv_dvb_bch_bb_0, 0), (self.dtv_dvb_ldpc_bb_0, 0))
self.connect((self.dtv_dvb_ldpc_bb_0, 0),
(self.dtv_dvbt2_interleaver_bb_0, 0))
self.connect((self.dtv_dvbt2_cellinterleaver_cc_0, 0),
(self.dtv_dvbt2_framemapper_cc_0, 0))
self.connect((self.dtv_dvbt2_framemapper_cc_0, 0),
(self.dtv_dvbt2_freqinterleaver_cc_0, 0))
self.connect((self.dtv_dvbt2_freqinterleaver_cc_0, 0),
(self.dtv_dvbt2_pilotgenerator_cc_0, 0))
self.connect((self.dtv_dvbt2_interleaver_bb_0, 0),
(self.dtv_dvbt2_modulator_bc_0, 0))
self.connect((self.dtv_dvbt2_modulator_bc_0, 0),
(self.dtv_dvbt2_cellinterleaver_cc_0, 0))
self.connect((self.dtv_dvbt2_p1insertion_cc_0, 0),
(self.blocks_multiply_const_vxx_0, 0))
self.connect((self.dtv_dvbt2_pilotgenerator_cc_0, 0),
(self.digital_ofdm_cyclic_prefixer_0, 0))
def __init__(self):
gr.top_block.__init__(self, "Dvbt Tx")
##################################################
# Variables
##################################################
self._bandwidth_config = ConfigParser.ConfigParser()
self._bandwidth_config.read('./dvbt.conf')
try:
bandwidth = self._bandwidth_config.getint('dvbt', 'bandwidth')
except:
bandwidth = 8000000
self.bandwidth = bandwidth
self.samp_rate = samp_rate = (bandwidth / 7) * 8
self._rf_gain_config = ConfigParser.ConfigParser()
self._rf_gain_config.read('./dvbt.conf')
try:
rf_gain = self._rf_gain_config.getint('hackrf', 'rf_gain')
except:
rf_gain = 0
self.rf_gain = rf_gain
self._mode_config = ConfigParser.ConfigParser()
self._mode_config.read('./dvbt.conf')
try:
mode = self._mode_config.get('dvbt', 'mode')
except:
mode = 0
self.mode = mode
self._if_gain_config = ConfigParser.ConfigParser()
self._if_gain_config.read('./dvbt.conf')
try:
if_gain = self._if_gain_config.getint('hackrf', 'if_gain')
except:
if_gain = 0
self.if_gain = if_gain
self._guard_interval_config = ConfigParser.ConfigParser()
self._guard_interval_config.read('./dvbt.conf')
try:
guard_interval = self._guard_interval_config.get(
'dvbt', 'guard_interval')
except:
guard_interval = 0
self.guard_interval = guard_interval
self._frequency_config = ConfigParser.ConfigParser()
self._frequency_config.read('./dvbt.conf')
try:
frequency = self._frequency_config.getint('hackrf', 'frequency')
except:
frequency = 858000000
self.frequency = frequency
self._constellation_config = ConfigParser.ConfigParser()
self._constellation_config.read('./dvbt.conf')
try:
constellation = self._constellation_config.get(
'dvbt', 'constellation')
except:
constellation = 0
self.constellation = constellation
self._coderate_config = ConfigParser.ConfigParser()
self._coderate_config.read('./dvbt.conf')
try:
coderate = self._coderate_config.get('dvbt', 'coderate')
except:
coderate = 0
self.coderate = coderate
infile = str(sys.argv[1])
#Constellation QPSK 16QAM 64QAM
if constellation == "QPSK":
const = dtv.MOD_QPSK
elif constellation == "16QAM":
const = dtv.MOD_16QAM
elif constellation == "64QAM":
const = dtv.MOD_64QAM
else:
sys.stderr.write(
"CONSTELLATION IN CONFIG WRONG! Values: QPSK, 16QAM or 64QAM \n"
)
sys.exit(1)
# Coderate 1/2 2/3 3/4 5/6 7/8
if coderate == "1/2":
codr = dtv.C1_2
elif coderate == "2/3":
codr = dtv.C2_3
elif coderate == "3/4":
codr = dtv.C3_4
elif coderate == "5/6":
codr = dtv.C5_6
elif coderate == "7/8":
codr = dtv.C7_8
else:
sys.stderr.write(
"CODERATE IN CONFIG WRONG! Values: 1/2, 2/3, 3/4, 5/6 or 7/8 \n"
)
sys.exit(1)
if mode == "2k":
factor = 1
carriers = 2048
modus = dtv.T2k
elif mode == "8k":
factor = 4
carriers = 8192
modus = dtv.T8k
else:
sys.stderr.write("MODE IN CONFIG WRONG! Values: 2k or 8k \n")
sys.exit(1)
#guard_interval dtv.GI_1_32 1/4 1/8 1/16 1/32
if guard_interval == "1/4":
guardi = dtv.GI_1_4
gi = carriers / 4
elif guard_interval == "1/8":
guardi = dtv.GI_1_8
gi = carriers / 8
elif guard_interval == "1/16":
guardi = dtv.GI_1_16
gi = carriers / 16
elif guard_interval == "1/32":
guardi = dtv.GI_1_32
gi = carriers / 32
else:
sys.stderr.write(
"GUARD_INTERVAL IN CONFIG WRONG! Values: 1/4, 1/8, 1/16 or 1/32 \n"
)
sys.exit(1)
##################################################
# Blocks
##################################################
self.osmosdr_sink_0 = osmosdr.sink(args="numchan=" + str(1) + " " + '')
self.osmosdr_sink_0.set_sample_rate(samp_rate)
self.osmosdr_sink_0.set_center_freq(frequency, 0)
self.osmosdr_sink_0.set_freq_corr(0, 0)
self.osmosdr_sink_0.set_gain(rf_gain, 0)
self.osmosdr_sink_0.set_if_gain(if_gain, 0)
self.osmosdr_sink_0.set_bb_gain(0, 0)
self.osmosdr_sink_0.set_antenna('', 0)
self.osmosdr_sink_0.set_bandwidth(0, 0)
self.fft_vxx_0 = fft.fft_vcc(carriers, False,
(window.rectangular(carriers)), True, 1)
self.dtv_dvbt_symbol_inner_interleaver_0 = dtv.dvbt_symbol_inner_interleaver(
(1512 * factor), modus, 1)
self.dtv_dvbt_reference_signals_0 = dtv.dvbt_reference_signals(
gr.sizeof_gr_complex, (1512 * factor), carriers, const, dtv.NH,
codr, codr, guardi, modus, 1, 0)
self.dtv_dvbt_reed_solomon_enc_0 = dtv.dvbt_reed_solomon_enc(
2, 8, 0x11d, 255, 239, 8, 51, (8 * factor))
self.dtv_dvbt_map_0 = dtv.dvbt_map((1512 * factor), const, dtv.NH,
modus, 1)
self.dtv_dvbt_inner_coder_0 = dtv.dvbt_inner_coder(
1, (1512 * factor), const, dtv.NH, codr)
self.dtv_dvbt_energy_dispersal_0 = dtv.dvbt_energy_dispersal(1 *
factor)
self.dtv_dvbt_convolutional_interleaver_0 = dtv.dvbt_convolutional_interleaver(
(136 * factor), 12, 17)
self.dtv_dvbt_bit_inner_interleaver_0 = dtv.dvbt_bit_inner_interleaver(
(1512 * factor), const, dtv.NH, modus)
self.digital_ofdm_cyclic_prefixer_0 = digital.ofdm_cyclic_prefixer(
carriers, carriers + (gi), 0, '')
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vcc(
(0.0022097087, ))
if infile == "-":
self.blocks_file_descriptor_source_0 = blocks.file_descriptor_source(
gr.sizeof_char * 1, 0, True)
else:
self.blocks_file_source_0 = blocks.file_source(
gr.sizeof_char * 1, infile, True)
##################################################
# Connections
##################################################
if infile == "-":
self.connect((self.blocks_file_descriptor_source_0, 0),
(self.dtv_dvbt_energy_dispersal_0, 0))
else:
self.connect((self.blocks_file_source_0, 0),
(self.dtv_dvbt_energy_dispersal_0, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0),
(self.osmosdr_sink_0, 0))
self.connect((self.digital_ofdm_cyclic_prefixer_0, 0),
(self.blocks_multiply_const_vxx_0, 0))
self.connect((self.dtv_dvbt_bit_inner_interleaver_0, 0),
(self.dtv_dvbt_symbol_inner_interleaver_0, 0))
self.connect((self.dtv_dvbt_convolutional_interleaver_0, 0),
(self.dtv_dvbt_inner_coder_0, 0))
self.connect((self.dtv_dvbt_energy_dispersal_0, 0),
(self.dtv_dvbt_reed_solomon_enc_0, 0))
self.connect((self.dtv_dvbt_inner_coder_0, 0),
(self.dtv_dvbt_bit_inner_interleaver_0, 0))
self.connect((self.dtv_dvbt_map_0, 0),
(self.dtv_dvbt_reference_signals_0, 0))
self.connect((self.dtv_dvbt_reed_solomon_enc_0, 0),
(self.dtv_dvbt_convolutional_interleaver_0, 0))
self.connect((self.dtv_dvbt_reference_signals_0, 0),
(self.fft_vxx_0, 0))
self.connect((self.dtv_dvbt_symbol_inner_interleaver_0, 0),
(self.dtv_dvbt_map_0, 0))
self.connect((self.fft_vxx_0, 0),
(self.digital_ofdm_cyclic_prefixer_0, 0))
def __init__(self):
gr.top_block.__init__(self)
bitrate = 8000
channel_bw = 12500
chan0_freq = 358400000
options = get_options()
self.rfgain = options.gain
self.channels = [ int(ch) for ch in options.channels.split(',') if ch ]
self.ch_freqs = [ ch * channel_bw + chan0_freq for ch in self.channels ]
self.ch_freqs.extend(
[ int(f) for f in options.channels_by_freq.split(',') if f ])
while len(self.channels) < len(self.ch_freqs):
self.channels.append(-1)
if options.frequency is None:
self.ifreq = (max(self.ch_freqs) + min(self.ch_freqs)) / 2 / channel_bw * channel_bw
else:
self.ifreq = options.frequency
ch0 = (self.ifreq - chan0_freq ) / channel_bw
n = options.sample_rate / channel_bw
s = options.sample_rate / bitrate / 2
c = ''
for ch in range(0,len(self.channels)):
c = c + '%i,'%((self.channels[ch] - ch0)%n)
c=c[:-1]
self.src = osmosdr.source(options.args)
self.src.set_center_freq(self.ifreq)
self.src.set_sample_rate(options.sample_rate)
self.src.set_freq_corr(options.ppm, 0)
fcl_args = ['./fcl', '-n', '%i'%n, '-s', '%i'%s, '-t', '2', '-c', '%s'%c, '-f', './fir.py %i 7900 2000 rcos'%options.sample_rate, '-o', '/dev/stdout']
sys.stderr.write(string.join(fcl_args))
self.fcl = subprocess.Popen(fcl_args, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
self.fcl_in = blocks.file_descriptor_sink(gr.sizeof_gr_complex*1, self.fcl.stdin.fileno())
self.fcl_out = blocks.file_descriptor_source(gr.sizeof_gr_complex*1, self.fcl.stdout.fileno(), False)
self.deinterleave = blocks.deinterleave(gr.sizeof_gr_complex*1, 1)
self.connect((self.src, 0), (self.fcl_in, 0))
self.connect((self.fcl_out, 0), (self.deinterleave, 0))
if self.rfgain is None:
self.src.set_gain_mode(True, 0)
self.iagc = 1
self.rfgain = 0
else:
self.iagc = 0
self.src.set_gain_mode(False)
self.src.set_gain(-9.7)
self.src.set_gain(self.rfgain)
self.src.set_if_gain(37)
# may differ from the requested rate
sample_rate = int(self.src.get_sample_rate())
sys.stderr.write("sample rate: %d\n" % (sample_rate))
first_decim = int(options.sample_rate / bitrate / 2)
sys.stderr.write("decim: %d\n" % (first_decim))
out_sample_rate=sample_rate/first_decim
sys.stderr.write("output sample rate: %d\n" % (out_sample_rate))
sps=out_sample_rate/bitrate
sys.stderr.write("samples per symbol: %d\n" % (sps))
self.tuners = []
self.afc_probes = []
if len(self.channels) != 1:
if options.output_file:
if options.output_file.find('%%') == -1:
raise ValueError('Output name template missing "%%".')
elif options.output_pipe:
if options.output_pipe.find('%%') == -1:
raise ValueError('Output name template missing "%%".')
else:
raise ValueError('WTF')
for ch in range(0,len(self.channels)):
bw = (9200 + options.afc_ppm_threshold)/2
taps = filter.firdes.low_pass(1.0,out_sample_rate, bw, bw*options.transition_width, filter.firdes.WIN_HANN)
# offset = self.ch_freqs[ch] - self.ifreq
offset = 0
sys.stderr.write("channel[%d]: %d frequency=%d, offset=%d Hz\n" % (ch, self.channels[ch], self.ch_freqs[ch], offset))
tuner = filter.freq_xlating_fir_filter_ccc(1, taps, offset, out_sample_rate)
self.tuners.append(tuner)
demod = digital.gmsk_demod(samples_per_symbol=sps)
fname = self.channels[ch]
if fname == -1:
fname = self.ch_freqs[ch]
if options.output_pipe is None:
file = options.output_file.replace('%%', str(fname))
output = blocks.file_sink(gr.sizeof_char, file)
else:
cmd = options.output_pipe.replace('%%', str(fname))
pipe = subprocess.Popen(cmd, stdin=subprocess.PIPE, shell=True)
fd = pipe.stdin.fileno()
output = blocks.file_descriptor_sink(gr.sizeof_char, fd)
self.connect((self.deinterleave, ch), (tuner, 0))
self.connect((tuner, 0), (demod, 0))
self.connect((demod, 0), (output, 0))
afc_decimation = 32000
afc_demod = analog.quadrature_demod_cf(sample_rate/first_decim/(2*math.pi*afc_decimation))
integrate = blocks.integrate_ff(afc_decimation)
afc_probe = blocks.probe_signal_f()
self.afc_probes.append(afc_probe)
self.connect((tuner, 0), (afc_demod,0))
self.connect((afc_demod, 0), (integrate,0))
self.connect((integrate, 0), (afc_probe, 0))
def _variable_function_probe_0_probe():
while True:
time.sleep(options.afc_period)
for ch in range(0,len(self.channels)):
err = self.afc_probes[ch].level()
if abs(err) < options.afc_ppm_threshold:
continue
freq = self.tuners[ch].center_freq() + err * options.afc_gain
self.tuners[ch].set_center_freq(freq)
if self.channels[ch] == -1:
sys.stderr.write("Freq %d freq err: %5.0f\tfreq: %f\n" % (self.ch_freqs[ch], err, freq))
else:
sys.stderr.write("Chan %d freq err: %5.0f\tfreq: %f\n" % (self.channels[ch], err, freq))
sys.stderr.write("\n")
_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()
def __init__(self, center_frequency, sample_rate, decimation, filename, sample_format=None, threshold=7.0,
burst_width=40e3, offline=False, max_queue_len=500, handle_multiple_frames_per_burst=False,
raw_capture_filename=None, debug_id=None, max_bursts=0, verbose=False, file_info="",
samples_per_symbol=10, config={}):
gr.top_block.__init__(self, "Top Block")
self.handle_sigint = False
self._center_frequency = center_frequency
self._burst_width = burst_width
self._input_sample_rate = sample_rate
self._verbose = verbose
self._threshold = threshold
self._filename = filename
self._offline = offline
self._max_queue_len = max_queue_len
self._handle_multiple_frames_per_burst = handle_multiple_frames_per_burst
self._decimation = decimation
# Sample rate of the bursts exiting the burst downmix block
self._burst_sample_rate = 25000 * samples_per_symbol
if (self._input_sample_rate / self._decimation) % self._burst_sample_rate != 0:
raise RuntimeError("Selected sample rate and decimation can not be matched. Please try a different combination. Sample rate divided by decimation must be a multiple of %d." % self._burst_sample_rate)
self._fft_size = 2**round(math.log(self._input_sample_rate / 1000, 2)) # FFT is approx. 1 ms long
self._burst_pre_len = 2 * self._fft_size
# Keep 16 ms of signal after the FFT loses track
self._burst_post_len = int(self._input_sample_rate * 16e-3)
# Just to keep the code below a bit more portable
tb = self
if self._decimation > 1:
self._use_channelizer = True
# We will set up a filter bank with an odd number of outputs and
# and an over sampling ratio to still get the desired decimation.
# The goal is to reconstruct signals which (due to Doppler shift) end up
# on the border of two channels.
# For this to work the desired decimation must be even.
if self._decimation % 2:
raise RuntimeError("The desired decimation must be 1 or an even number.")
self._channels = self._decimation + 1
if self._decimation >= 8:
self._use_fft_channelizer = True
if 2**int(math.log(self._decimation, 2)) != self._decimation:
raise RuntimeError("Decimations >= 8 must be a power of two.")
self._channel_sample_rate = self._input_sample_rate // self._decimation
# On low end ARM machines we only create a single burst downmixer to not
# overload the CPU. Rather drop bursts than samples.
if platform.machine() == 'aarch64' and multiprocessing.cpu_count() == 4:
self._n_burst_downmixers = 1
else:
self._n_burst_downmixers = 2
else:
self._use_fft_channelizer = False
self._n_burst_downmixers = self._channels
self._channelizer_over_sample_ratio = self._channels / (self._channels - 1.)
channelizer_output_sample_rate = int(round(float(self._input_sample_rate) / self._channels * self._channelizer_over_sample_ratio))
self._channel_sample_rate = channelizer_output_sample_rate
assert channelizer_output_sample_rate == self._input_sample_rate / self._decimation
assert channelizer_output_sample_rate % self._burst_sample_rate == 0
# The over sampled region of the FIR filter contains half of the signal width and
# the transition region of the FIR filter.
# The bandwidth is simply increased by the signal width.
# A signal which has its center frequency directly on the border of
# two channels will reconstruct correctly on both channels.
self._fir_bw = (self._input_sample_rate / self._channels + self._burst_width) / 2
# The remaining bandwidth inside the over sampled region is used to
# contain the transition region of the filter.
# It can be multiplied by two as it is allowed to continue into the
# transition region of the neighboring channel.
# Some details can be found here: https://youtu.be/6ngYp8W-AX0?t=2289
self._fir_tw = (channelizer_output_sample_rate / 2 - self._fir_bw) * 2
# Real world data shows only a minor degradation in performance when
# doubling the transition width.
self._fir_tw *= 2
# If the over sampling ratio is not large enough, there is not
# enough room to construct a transition region.
if self._fir_tw < 0:
raise RuntimeError("PFB over sampling ratio not enough to create a working FIR filter. Please try a different decimation.")
self._pfb_fir_filter = gnuradio.filter.firdes.low_pass_2(1, self._input_sample_rate, self._fir_bw, self._fir_tw, 60)
# If the transition width approaches 0, the filter size goes up significantly.
if len(self._pfb_fir_filter) > 300:
print("Warning: The PFB FIR filter has an abnormal large number of taps:", len(self._pfb_fir_filter), file=sys.stderr)
print("Consider reducing the decimation factor or use a decimation >= 8.", file=sys.stderr)
pfb_input_delay = (len(self._pfb_fir_filter) + 1) // 2 - self._channels / self._channelizer_over_sample_ratio
self._channelizer_delay = pfb_input_delay / self._decimation
if self._verbose:
print("self._channels", self._channels, file=sys.stderr)
print("len(self._pfb_fir_filter)", len(self._pfb_fir_filter), file=sys.stderr)
print("self._channelizer_over_sample_ratio", self._channelizer_over_sample_ratio, file=sys.stderr)
print("self._fir_bw", self._fir_bw, file=sys.stderr)
print("self._fir_tw", self._fir_tw, file=sys.stderr)
print("self._channel_sample_rate", self._channel_sample_rate, file=sys.stderr)
else:
self._use_channelizer = False
self._channel_sample_rate = self._input_sample_rate
self._channels = 1
# After 90 ms there needs to be a pause in the frame sturcture.
# Let's make that the limit for a detected burst
self._max_burst_len = int(self._channel_sample_rate * 0.09)
if self._verbose:
print("require %.1f dB" % self._threshold, file=sys.stderr)
print("burst_width: %d Hz" % self._burst_width, file=sys.stderr)
print("source:", config['source'], file=sys.stderr)
if config['source'] == 'osmosdr':
d = config["osmosdr-source"]
# work around https://github.com/gnuradio/gnuradio/issues/5121
sys.path.append('/usr/local/lib/python3/dist-packages')
import osmosdr
if 'device_args' in d:
source = osmosdr.source(args=d['device_args'])
else:
source = osmosdr.source()
source.set_sample_rate(self._input_sample_rate)
source.set_center_freq(self._center_frequency, 0)
# Set a rough time estimate for potential rx_time tags from USRP devices
# This prevents the output from having bogous time stamps if no GPSDO is available
source.set_time_now(osmosdr.time_spec_t(time.time()))
if 'gain' in d:
gain = int(d['gain'])
source.set_gain(gain, 0)
print("(RF) Gain:", source.get_gain(0), '(Requested %d)' % gain, file=sys.stderr)
for key, value in d.items():
if key.endswith("_gain"):
gain_option_name = key.split('_')[0]
gain_value = int(value)
def match_gain(gain, gain_names):
for gain_name in gain_names:
if gain.lower() == gain_name.lower():
return gain_name
return None
gain_name = match_gain(gain_option_name, source.get_gain_names())
if gain_name is not None:
source.set_gain(gain_value, gain_name, 0)
print(gain_name, "Gain:", source.get_gain(gain_name, 0), '(Requested %d)' % gain_value, file=sys.stderr)
else:
print("WARNING: Gain", gain_option_name, "not supported by source!", file=sys.stderr)
print("Supported gains:", source.get_gain_names(), file=sys.stderr)
if 'bandwidth' in d:
bandwidth = int(d['bandwidth'])
source.set_bandwidth(bandwidth, 0)
print("Bandwidth:", source.get_bandwidth(0), '(Requested %d)' % bandwidth, file=sys.stderr)
else:
source.set_bandwidth(0, 0)
print("Warning: Setting bandwidth to", source.get_bandwidth(0), file=sys.stderr)
if 'antenna' in d:
antenna = d['antenna']
source.set_antenna(antenna, 0)
print("Antenna:", source.get_antenna(0), '(Requested %s)' % antenna, file=sys.stderr)
else:
print("Warning: Setting antenna to", source.get_antenna(0), file=sys.stderr)
if 'clock_source' in d:
print("Setting clock source to:", d['clock_source'], file=sys.stderr)
source.set_clock_source(d['clock_source'], 0)
if 'time_source' in d:
print("Setting time source to:", d['time_source'], file=sys.stderr)
source.set_time_source(d['time_source'], 0)
while (time.time() % 1) < 0.4 or (time.time() % 1) > 0.6:
pass
t = time.time()
source.set_time_next_pps(osmosdr.time_spec_t(int(t) + 1))
time.sleep(1)
#source.set_freq_corr($corr0, 0)
#source.set_dc_offset_mode($dc_offset_mode0, 0)
#source.set_iq_balance_mode($iq_balance_mode0, 0)
#source.set_gain_mode($gain_mode0, 0)
elif config['source'] == 'soapy':
d = config["soapy-source"]
try:
from gnuradio import soapy
except ImportError:
raise ImportError("gr-soapy not found. Make sure you are running GNURadio >= 3.9.2.0")
if 'driver' not in d:
print("No driver specified for soapy", file=sys.stderr)
print("Run 'SoapySDRUtil -i' to see available drivers(factories)", file=sys.stderr)
exit(1)
dev = 'driver=' + d['driver']
# Strip quotes
def sanitize(s):
if s.startswith('"') and s.endswith('"'):
return s.strip('""')
if s.startswith("'") and s.endswith("'"):
return s.strip("''")
return s
# Remove all outer quotes from the args if they are present in the config
if 'device_args' in d:
dev_args = sanitize(d['device_args'])
elif 'dev_args' in d:
dev_args = sanitize(d['dev_args'])
else:
dev_args = ''
stream_args = sanitize(d['stream_args']) if 'stream_args' in d else ''
tune_args = sanitize(d['tune_args']) if 'tune_args' in d else ''
other_settings = sanitize(d['other_settings']) if 'other_settings' in d else ''
# We only support a single channel. Apply tune_args and other_settings to that channel.
source = soapy.source(dev, "fc32", 1, dev_args, stream_args, [tune_args], [other_settings])
source.set_sample_rate(0, self._input_sample_rate)
source.set_frequency(0, self._center_frequency)
if 'gain' in d:
gain = int(d['gain'])
source.set_gain_mode(0, False) # AGC: OFF
source.set_gain(0, gain)
print("Gain:", source.get_gain(0), '(Requested %d)' % gain, file=sys.stderr)
for key, value in d.items():
if key.endswith("_gain"):
gain_option_name = key.split('_')[0]
gain_value = int(value)
def match_gain(gain, gain_names):
for gain_name in gain_names:
if gain.lower() == gain_name.lower():
return gain_name
return None
gain_name = match_gain(gain_option_name, source.list_gains(0))
if gain_name is not None:
source.set_gain(0, gain_name, gain_value)
print(gain_name, "Gain:", source.get_gain(0, gain_name), '(Requested %d)' % gain_value, source.get_gain_range(0, gain_name), file=sys.stderr)
else:
print("WARNING: Gain", gain_option_name, "not supported by source!", file=sys.stderr)
print("Supported gains:", source.list_gains(0), file=sys.stderr)
if 'bandwidth' in d:
bandwidth = int(d['bandwidth'])
source.set_bandwidth(0, bandwidth)
print("Bandwidth:", source.get_bandwidth(0), '(Requested %d)' % bandwidth, file=sys.stderr)
else:
source.set_bandwidth(0, 0)
print("Warning: Setting bandwidth to", source.get_bandwidth(0), file=sys.stderr)
if 'antenna' in d:
antenna = d['antenna']
source.set_antenna(0, antenna)
print("Antenna:", source.get_antenna(0), '(Requested %s)' % antenna, file=sys.stderr)
else:
print("Warning: Setting antenna to", source.get_antenna(0), file=sys.stderr)
#source.set_frequency_correction(0, f_corr)
#source.set_dc_offset_mode(0, True)
#source.set_dc_offset(0, dc_off)
#source.set_iq_balance(0, iq_bal)
elif config['source'] == 'zeromq-sub':
d = config["zeromq-sub-source"]
from gnuradio import zeromq
if 'address' not in d:
print("No address specified for zeromq sub", file=sys.stderr)
exit(1)
pass_tags = False
if 'pass_tags' in d:
pass_tags = bool(distutils.util.strtobool(d['pass_tags']))
timeout = 100
if 'timeout' in d:
timeout = int(d['timeout'])
high_water_mark = -1
if 'high_water_mark' in d:
high_water_mark = int(d['high_water_mark'])
source = zeromq.sub_source(gr.sizeof_gr_complex, 1, d['address'], timeout, pass_tags, high_water_mark, '')
elif config['source'] == 'uhd':
d = config["uhd-source"]
from gnuradio import uhd
dev_addr = ""
if "device_addr" in d:
dev_addr = d['device_addr']
dev_args = d['device_args']
cpu_format = 'fc32'
wire_format = 'sc16'
stream_args = ""
stream_args = uhd.stream_args(cpu_format, wire_format, args=stream_args)
source = uhd.usrp_source(dev_addr + "," + dev_args, stream_args)
source.set_samp_rate(self._input_sample_rate)
source.set_center_freq(self._center_frequency)
if 'gain' in d:
gain = int(d['gain'])
source.set_gain(gain, 0)
print("Gain:", source.get_gain(0), '(Requested %d)' % gain, file=sys.stderr)
if 'bandwidth' in d:
bandwidth = int(d['bandwidth'])
source.set_bandwidth(bandwidth, 0)
print("Bandwidth:", source.get_bandwidth(0), '(Requested %d)' % bandwidth, file=sys.stderr)
else:
source.set_bandwidth(0)
print("Warning: Setting bandwidth to", source.get_bandwidth(0), file=sys.stderr)
if 'antenna' in d:
antenna = d['antenna']
source.set_antenna(antenna, 0)
print("Antenna:", source.get_antenna(0), '(Requested %s)' % antenna, file=sys.stderr)
else:
print("Warning: Setting antenna to", source.get_antenna(0), file=sys.stderr)
print("mboard sensors:", source.get_mboard_sensor_names(0), file=sys.stderr)
#for sensor in source.get_mboard_sensor_names(0):
# print(sensor, source.get_mboard_sensor(sensor, 0))
gpsdo_sources = ('gpsdo', 'jacksonlabs')
time_source = None
if 'time_source' in d:
time_source = d['time_source']
if time_source in gpsdo_sources:
source.set_time_source("gpsdo", 0)
else:
source.set_time_source(time_source, 0)
clock_source = None
if 'clock_source' in d:
clock_source = d['time_source']
if clock_source in gpsdo_sources:
source.set_clock_source("gpsdo", 0)
else:
source.set_clock_source(clock_source, 0)
if time_source in gpsdo_sources or clock_source in gpsdo_sources:
print("Waiting for gps_locked...", file=sys.stderr)
while True:
try:
if d['time_source'] == "jacksonlabs":
servo = source.get_mboard_sensor("gps_servo", 0)
# See https://lists.ettus.com/empathy/thread/6ZOCFQSKLHSG2IH3ID7XPWVKHVHZXPBP
gps_locked = str(servo).split()[8] == "6"
else:
gps_locked = source.get_mboard_sensor("gps_locked", 0).to_bool()
if gps_locked:
break
except ValueError as e:
print(e, file=sys.stderr)
pass
time.sleep(1)
print("gps_locked!", file=sys.stderr)
if clock_source:
print("Waiting for ref_locked...", file=sys.stderr)
while True:
try:
ref_locked = source.get_mboard_sensor("ref_locked", 0)
if ref_locked.to_bool():
break
except ValueError as e:
print(e, file=sys.stderr)
pass
time.sleep(1)
print("ref_locked!", file=sys.stderr)
if time_source:
if time_source in gpsdo_sources:
while True:
try:
gps_time = uhd.time_spec_t(source.get_mboard_sensor("gps_time").to_int())
break
except ValueError as e:
print(e, file=sys.stderr)
pass
time.sleep(1)
next_pps_time = gps_time + 1
else:
system_time = uhd.time_spec_t(int(time.time()))
next_pps_time = system_time + 1
source.set_time_next_pps(next_pps_time)
print("Next PPS at", next_pps_time.get_real_secs(), file=sys.stderr)
print("Sleeping 2 seconds...", file=sys.stderr)
time.sleep(2)
# TODO: Check result for plausibility
print("USRP time:", source.get_time_last_pps(0).get_real_secs(), file=sys.stderr)
else:
# Set a rough time estimate for rx_time tags from the USRP.
# This prevents the output from having bogous time stamps if no GPSDO is available.
source.set_time_now(uhd.time_spec_t(time.time()))
self.source = source
else:
if sample_format == "cu8":
converter = iridium.iuchar_to_complex()
itemsize = gr.sizeof_char
scale = 1
itemtype = np.uint8
elif sample_format == "ci8":
converter = blocks.interleaved_char_to_complex()
itemsize = gr.sizeof_char
scale = 1 / 128.
itemtype = np.int8
elif sample_format == "ci16_le":
converter = blocks.interleaved_short_to_complex()
itemsize = gr.sizeof_short
scale = 1 / 32768.
itemtype = np.int16
elif sample_format == "cf32_le":
converter = None
itemsize = gr.sizeof_gr_complex
itemtype = np.complex64
else:
raise RuntimeError("Unknown sample format for offline mode given")
if config['source'] == 'stdin':
file_source = blocks.file_descriptor_source(itemsize=itemsize, fd=0, repeat=False)
elif config['source'] == 'object':
from iridium.file_object_source import file_object_source
file_source = file_object_source(fileobject=config['object'], itemtype=itemtype)
else:
file_source = blocks.file_source(itemsize=itemsize, filename=config['file'], repeat=False)
self.source = file_source # XXX: keep reference
if converter:
multi = blocks.multiply_const_cc(scale)
tb.connect(file_source, converter, multi)
source = multi
else:
source = file_source
self._fft_burst_tagger = iridium.fft_burst_tagger(center_frequency=self._center_frequency,
fft_size=self._fft_size,
sample_rate=self._input_sample_rate,
burst_pre_len=self._burst_pre_len,
burst_post_len=self._burst_post_len,
burst_width=int(self._burst_width),
max_bursts=max_bursts,
max_burst_len=int(self._input_sample_rate * 0.09),
threshold=self._threshold,
history_size=512,
offline=self._offline,
debug=self._verbose)
self._fft_burst_tagger.set_min_output_buffer(1024 * 64)
# Initial filter to filter the detected bursts. Runs at burst_sample_rate. Used to decimate the signal.
input_filter = gnuradio.filter.firdes.low_pass_2(1, self._channel_sample_rate, self._burst_width / 2, self._burst_width, 40)
#input_filter = gnuradio.filter.firdes.low_pass_2(1, self._channel_sample_rate, 42e3/2, 24e3, 40)
#print len(input_filter)
# Filter to find the start of the signal. Should be fairly narrow.
start_finder_filter = gnuradio.filter.firdes.low_pass_2(1, self._burst_sample_rate, 5e3 / 2, 10e3 / 2, 60)
#print len(start_finder_filter)
self._iridium_qpsk_demod = iridium.iridium_qpsk_demod(self._channels)
self._frame_sorter = iridium.frame_sorter()
self._iridium_frame_printer = iridium.iridium_frame_printer(file_info)
if raw_capture_filename:
multi = blocks.multiply_const_cc(32768)
converter = blocks.complex_to_interleaved_short()
raw_sink = blocks.file_sink(itemsize=gr.sizeof_short, filename=raw_capture_filename + '.sigmf-data')
tb.connect(source, multi, converter, raw_sink)
# Enable the following if not fast enough
#self._burst_to_pdu_converters = []
#self._burst_downmixers = []
#return
tb.connect(source, self._fft_burst_tagger)
if self._use_channelizer:
self._burst_to_pdu_converters = []
self._burst_downmixers = []
sinks = []
for channel in range(self._channels):
if not self._use_fft_channelizer:
center = channel if channel <= self._channels / 2 else (channel - self._channels)
relative_center = center / float(self._channels)
relative_span = 1. / self._channels
relative_sample_rate = relative_span * self._channelizer_over_sample_ratio
# Second and third parameters tell the block where after the PFB it sits.
burst_to_pdu_converter = iridium.tagged_burst_to_pdu(self._max_burst_len,
relative_center,
relative_span,
relative_sample_rate,
-self._channelizer_delay,
self._max_queue_len,
not self._offline)
self._burst_to_pdu_converters.append(burst_to_pdu_converter)
burst_downmixer = iridium.burst_downmix(self._burst_sample_rate,
int(0.007 * self._burst_sample_rate),
0,
(input_filter),
(start_finder_filter),
self._handle_multiple_frames_per_burst)
if debug_id is not None:
burst_downmixer.debug_id(debug_id)
self._burst_downmixers.append(burst_downmixer)
channelizer_debug_sinks = []
#channelizer_debug_sinks = [blocks.file_sink(itemsize=gr.sizeof_gr_complex, filename="/tmp/channel-%d.f32"%i) for i in range(self._channels)]
if self._use_fft_channelizer:
if not channelizer_debug_sinks and self._offline:
# HACK: if there are no stream outputs active GNURadio has issues terminating the
# flowgraph on completion. Connect some dummy sinks to them.
channelizer_debug_sinks = [blocks.null_sink(gr.sizeof_gr_complex) for i in range(self._channels)]
activate_streams = len(channelizer_debug_sinks) > 0
self._channelizer = iridium.fft_channelizer(1024, self._channels - 1, activate_streams, self._n_burst_downmixers, self._max_burst_len,
self._max_queue_len * self._n_burst_downmixers, not self._offline)
else:
self._channelizer = gnuradio.filter.pfb.channelizer_ccf(numchans=self._channels, taps=self._pfb_fir_filter, oversample_rate=self._channelizer_over_sample_ratio)
tb.connect(self._fft_burst_tagger, self._channelizer)
for i in range(self._channels):
if channelizer_debug_sinks:
tb.connect((self._channelizer, i), channelizer_debug_sinks[i])
for i in range(self._n_burst_downmixers):
if self._burst_to_pdu_converters:
tb.connect((self._channelizer, i), self._burst_to_pdu_converters[i])
tb.msg_connect((self._burst_to_pdu_converters[i], 'cpdus'), (self._burst_downmixers[i], 'cpdus'))
tb.msg_connect((self._burst_downmixers[i], 'burst_handled'), (self._burst_to_pdu_converters[i], 'burst_handled'))
else:
tb.msg_connect((self._channelizer, 'cpdus%d' % i), (self._burst_downmixers[i], 'cpdus'))
tb.msg_connect((self._burst_downmixers[i], 'burst_handled'), (self._channelizer, 'burst_handled'))
tb.msg_connect((self._burst_downmixers[i], 'cpdus'), (self._iridium_qpsk_demod, 'cpdus%d' % i))
else:
burst_downmix = iridium.burst_downmix(self._burst_sample_rate, int(0.007 * self._burst_sample_rate), 0, (input_filter), (start_finder_filter), self._handle_multiple_frames_per_burst)
if debug_id is not None:
burst_downmix.debug_id(debug_id)
burst_to_pdu = iridium.tagged_burst_to_pdu(self._max_burst_len,
0.0, 1.0, 1.0,
0,
self._max_queue_len, not self._offline)
tb.connect(self._fft_burst_tagger, burst_to_pdu)
tb.msg_connect((burst_to_pdu, 'cpdus'), (burst_downmix, 'cpdus'))
tb.msg_connect((burst_downmix, 'burst_handled'), (burst_to_pdu, 'burst_handled'))
# Final connection to the demodulator. It prints the output to stdout
tb.msg_connect((burst_downmix, 'cpdus'), (self._iridium_qpsk_demod, 'cpdus'))
self._burst_downmixers = [burst_downmix]
self._burst_to_pdu_converters = [burst_to_pdu]
tb.msg_connect((self._iridium_qpsk_demod, 'pdus'), (self._frame_sorter, 'pdus'))
tb.msg_connect((self._frame_sorter, 'pdus'), (self._iridium_frame_printer, 'pdus'))
def __init__(self):
gr.top_block.__init__(self, "Dvbc Tx Nogui")
##################################################
# Variables
##################################################
self._symrate_config = ConfigParser.ConfigParser()
self._symrate_config.read('./dvbc.conf')
try:
symrate = self._symrate_config.getint('dvbc', 'symbolrate')
except:
symrate = 0
self.symrate = symrate
self.samp_rate = samp_rate = symrate * 2
self.rrc_taps = rrc_taps = 100
self._rf_gain_config = ConfigParser.ConfigParser()
self._rf_gain_config.read('./dvbc.conf')
try:
rf_gain = self._rf_gain_config.getint('hackrf', 'rf-gain')
except:
rf_gain = 0
self.rf_gain = rf_gain
self._mode_config = ConfigParser.ConfigParser()
self._mode_config.read('./dvbc.conf')
try:
mode = self._mode_config.get('dvbc', 'mode')
except:
mode = 0
self.mode = mode
self._if_gain_config = ConfigParser.ConfigParser()
self._if_gain_config.read('./dvbc.conf')
try:
if_gain = self._if_gain_config.getint('hackrf', 'if-gain')
except:
if_gain = 0
self.if_gain = if_gain
self._center_freq_config = ConfigParser.ConfigParser()
self._center_freq_config.read('./dvbc.conf')
try:
center_freq = self._center_freq_config.getint(
'hackrf', 'frequency')
except:
center_freq = 0
self.center_freq = center_freq
infile = str(sys.argv[1])
if mode == "16QAM":
mod = dvbc.MOD_16QAM
elif mode == "32QAM":
mod = dvbc.MOD_32QAM
elif mode == "64QAM":
mod = dvbc.MOD_64QAM
elif mode == "128QAM":
mod = dvbc.MOD_128QAM
elif mode == "256QAM":
mod = dvbc.MOD_256QAM
else:
sys.stderr.write(
"MODE IN CONFIG WRONG! Values: 16QAM, 32QAM, 64QAM, 128QAM or 256QAM \n"
)
sys.exit(1)
print "Frequency: ", center_freq / 1000000, "Mhz / Mode: ", mode, "/ Symbolrate: ", symrate / 1000, "\n"
##################################################
# Blocks
##################################################
self.osmosdr_sink_1 = osmosdr.sink(args="numchan=" + str(1) + " " +
'hackrf,buffers=128,buflen=32768')
self.osmosdr_sink_1.set_sample_rate(samp_rate)
self.osmosdr_sink_1.set_center_freq(center_freq, 0)
self.osmosdr_sink_1.set_freq_corr(0, 0)
self.osmosdr_sink_1.set_gain(rf_gain, 0)
self.osmosdr_sink_1.set_if_gain(if_gain, 0)
self.osmosdr_sink_1.set_bb_gain(0, 0)
self.osmosdr_sink_1.set_antenna('', 0)
self.osmosdr_sink_1.set_bandwidth(8750000, 0)
self.fft_filter_xxx_0 = filter.fft_filter_ccc(
1, (firdes.root_raised_cosine(0.85, samp_rate, samp_rate / 2, 0.15,
rrc_taps)), 1)
self.fft_filter_xxx_0.declare_sample_delay(0)
self.dvbc_symbolmapper_bb_0 = dvbc.symbolmapper_bb(mod)
self.dvbc_modulator_bc_0 = dvbc.modulator_bc(mod)
self.dtv_dvbt_reed_solomon_enc_0 = dtv.dvbt_reed_solomon_enc(
2, 8, 0x11d, 255, 239, 8, 51, 8)
self.dtv_dvbt_energy_dispersal_0 = dtv.dvbt_energy_dispersal(1)
self.dtv_dvbt_convolutional_interleaver_0 = dtv.dvbt_convolutional_interleaver(
136, 12, 17)
if infile == "-":
self.blocks_file_descriptor_source_0 = blocks.file_descriptor_source(
gr.sizeof_char * 1, 0, True)
else:
self.blocks_file_source_0 = blocks.file_source(
gr.sizeof_char * 1, infile, True)
##################################################
# Connections
##################################################
if infile == "-":
self.connect((self.blocks_file_descriptor_source_0, 0),
(self.dtv_dvbt_energy_dispersal_0, 0))
else:
self.connect((self.blocks_file_source_0, 0),
(self.dtv_dvbt_energy_dispersal_0, 0))
self.connect((self.dtv_dvbt_convolutional_interleaver_0, 0),
(self.dvbc_symbolmapper_bb_0, 0))
self.connect((self.dtv_dvbt_energy_dispersal_0, 0),
(self.dtv_dvbt_reed_solomon_enc_0, 0))
self.connect((self.dtv_dvbt_reed_solomon_enc_0, 0),
(self.dtv_dvbt_convolutional_interleaver_0, 0))
self.connect((self.dvbc_modulator_bc_0, 0), (self.fft_filter_xxx_0, 0))
self.connect((self.dvbc_symbolmapper_bb_0, 0),
(self.dvbc_modulator_bc_0, 0))
self.connect((self.fft_filter_xxx_0, 0), (self.osmosdr_sink_1, 0))
def __init__(self):
gr.top_block.__init__(self)
bitrate = 8000
channel_bw = 12500
chan0_freq = 358400000
options = get_options()
self.rfgain = options.gain
self.channels = [int(ch) for ch in options.channels.split(',') if ch]
self.ch_freqs = [ch * channel_bw + chan0_freq for ch in self.channels]
self.ch_freqs.extend(
[int(f) for f in options.channels_by_freq.split(',') if f])
while len(self.channels) < len(self.ch_freqs):
self.channels.append(-1)
if options.frequency is None:
self.ifreq = (max(self.ch_freqs) +
min(self.ch_freqs)) / 2 / channel_bw * channel_bw
else:
self.ifreq = options.frequency
ch0 = (self.ifreq - chan0_freq) / channel_bw
n = options.sample_rate / channel_bw
s = options.sample_rate / bitrate / 2
c = ''
for ch in range(0, len(self.channels)):
c = c + '%i,' % ((self.channels[ch] - ch0) % n)
c = c[:-1]
self.src = osmosdr.source(options.args)
self.src.set_center_freq(self.ifreq)
self.src.set_sample_rate(options.sample_rate)
self.src.set_freq_corr(options.ppm, 0)
fcl_args = [
'./fcl', '-n',
'%i' % n, '-s',
'%i' % s, '-t', '2', '-c',
'%s' % c, '-f',
'./fir.py %i 7900 2000 rcos' % options.sample_rate, '-o',
'/dev/stdout'
]
sys.stderr.write(string.join(fcl_args))
self.fcl = subprocess.Popen(fcl_args,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE)
self.fcl_in = blocks.file_descriptor_sink(gr.sizeof_gr_complex * 1,
self.fcl.stdin.fileno())
self.fcl_out = blocks.file_descriptor_source(gr.sizeof_gr_complex * 1,
self.fcl.stdout.fileno(),
False)
self.deinterleave = blocks.deinterleave(gr.sizeof_gr_complex * 1, 1)
self.connect((self.src, 0), (self.fcl_in, 0))
self.connect((self.fcl_out, 0), (self.deinterleave, 0))
if self.rfgain is None:
self.src.set_gain_mode(True, 0)
self.iagc = 1
self.rfgain = 0
else:
self.iagc = 0
self.src.set_gain_mode(False)
self.src.set_gain(-9.7)
self.src.set_gain(self.rfgain)
self.src.set_if_gain(37)
# may differ from the requested rate
sample_rate = int(self.src.get_sample_rate())
sys.stderr.write("sample rate: %d\n" % (sample_rate))
first_decim = int(options.sample_rate / bitrate / 2)
sys.stderr.write("decim: %d\n" % (first_decim))
out_sample_rate = sample_rate / first_decim
sys.stderr.write("output sample rate: %d\n" % (out_sample_rate))
sps = out_sample_rate / bitrate
sys.stderr.write("samples per symbol: %d\n" % (sps))
self.tuners = []
self.afc_probes = []
if len(self.channels) != 1:
if options.output_file:
if options.output_file.find('%%') == -1:
raise ValueError('Output name template missing "%%".')
elif options.output_pipe:
if options.output_pipe.find('%%') == -1:
raise ValueError('Output name template missing "%%".')
else:
raise ValueError('WTF')
for ch in range(0, len(self.channels)):
bw = (9200 + options.afc_ppm_threshold) / 2
taps = filter.firdes.low_pass(1.0, out_sample_rate, bw,
bw * options.transition_width,
filter.firdes.WIN_HANN)
# offset = self.ch_freqs[ch] - self.ifreq
offset = 0
sys.stderr.write(
"channel[%d]: %d frequency=%d, offset=%d Hz\n" %
(ch, self.channels[ch], self.ch_freqs[ch], offset))
tuner = filter.freq_xlating_fir_filter_ccc(1, taps, offset,
out_sample_rate)
self.tuners.append(tuner)
demod = digital.gmsk_demod(samples_per_symbol=sps)
fname = self.channels[ch]
if fname == -1:
fname = self.ch_freqs[ch]
if options.output_pipe is None:
file = options.output_file.replace('%%', str(fname))
output = blocks.file_sink(gr.sizeof_char, file)
else:
cmd = options.output_pipe.replace('%%', str(fname))
pipe = subprocess.Popen(cmd, stdin=subprocess.PIPE, shell=True)
fd = pipe.stdin.fileno()
output = blocks.file_descriptor_sink(gr.sizeof_char, fd)
self.connect((self.deinterleave, ch), (tuner, 0))
self.connect((tuner, 0), (demod, 0))
self.connect((demod, 0), (output, 0))
afc_decimation = 32000
afc_demod = analog.quadrature_demod_cf(
sample_rate / first_decim / (2 * math.pi * afc_decimation))
integrate = blocks.integrate_ff(afc_decimation)
afc_probe = blocks.probe_signal_f()
self.afc_probes.append(afc_probe)
self.connect((tuner, 0), (afc_demod, 0))
self.connect((afc_demod, 0), (integrate, 0))
self.connect((integrate, 0), (afc_probe, 0))
def _variable_function_probe_0_probe():
while True:
time.sleep(options.afc_period)
for ch in range(0, len(self.channels)):
err = self.afc_probes[ch].level()
if abs(err) < options.afc_ppm_threshold:
continue
freq = self.tuners[ch].center_freq(
) + err * options.afc_gain
self.tuners[ch].set_center_freq(freq)
if self.channels[ch] == -1:
sys.stderr.write(
"Freq %d freq err: %5.0f\tfreq: %f\n" %
(self.ch_freqs[ch], err, freq))
else:
sys.stderr.write(
"Chan %d freq err: %5.0f\tfreq: %f\n" %
(self.channels[ch], err, freq))
sys.stderr.write("\n")
_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()
def __init__(self,
center_frequency,
sample_rate,
decimation,
filename,
sample_format=None,
threshold=7.0,
burst_width=40e3,
offline=False,
max_queue_len=500,
handle_multiple_frames_per_burst=False,
raw_capture_filename=None,
debug_id=None,
max_bursts=0,
verbose=False,
file_info=None,
samples_per_symbol=10):
gr.top_block.__init__(self, "Top Block")
self.handle_sigint = False
self._center_frequency = center_frequency
self._burst_width = burst_width
self._input_sample_rate = sample_rate
self._verbose = verbose
self._threshold = threshold
self._filename = filename
self._offline = offline
self._max_queue_len = max_queue_len
self._handle_multiple_frames_per_burst = handle_multiple_frames_per_burst
# Sample rate of the bursts exiting the burst downmix block
self._burst_sample_rate = 25000 * samples_per_symbol
assert (self._input_sample_rate /
decimation) % self._burst_sample_rate == 0
self._fft_size = 2**round(math.log(self._input_sample_rate / 1000,
2)) # FFT is approx. 1 ms long
self._burst_pre_len = 2 * self._fft_size
# Keep 16 ms of signal after the FFT loses track
self._burst_post_len = int(self._input_sample_rate * 16e-3)
# Just to keep the code below a bit more portable
tb = self
if decimation > 1:
self._use_pfb = True
# We will set up a filter bank with an odd number of outputs and
# and an over sampling ratio to still get the desired decimation.
# The goal is to reconstruct signals which (due to Doppler shift) end up
# on the border of two channels.
# For this to work the desired decimation must be even.
if decimation % 2:
raise RuntimeError(
"The desired decimation must be 1 or an even number")
self._channels = decimation + 1
self._pfb_over_sample_ratio = self._channels / (self._channels -
1.)
pfb_output_sample_rate = int(
round(
float(self._input_sample_rate) / self._channels *
self._pfb_over_sample_ratio))
assert pfb_output_sample_rate == self._input_sample_rate / decimation
assert pfb_output_sample_rate % self._burst_sample_rate == 0
# The over sampled region of the FIR filter contains half of the signal width and
# the transition region of the FIR filter.
# The bandwidth is simply increased by the signal width.
# A signal which has its center frequency directly on the border of
# two channels will reconstruct correctly on both channels.
self._fir_bw = (self._input_sample_rate / self._channels +
self._burst_width) / 2
# The remaining bandwidth inside the over sampled region is used to
# contain the transition region of the filter.
# It can be multiplied by two as it is allowed to continue into the
# transition region of the neighboring channel.
# Some details can be found here: https://youtu.be/6ngYp8W-AX0?t=2289
self._fir_tw = (pfb_output_sample_rate / 2 - self._fir_bw) * 2
# Real world data shows only a minor degradation in performance when
# doubling the transition width.
self._fir_tw *= 2
# If the over sampling ratio is not large enough, there is not
# enough room to construct a transition region.
if self._fir_tw < 0:
raise RuntimeError(
"PFB over sampling ratio not enough to create a working FIR filter"
)
self._pfb_fir_filter = gnuradio.filter.firdes.low_pass_2(
1, self._input_sample_rate, self._fir_bw, self._fir_tw, 60)
# If the transition width approaches 0, the filter size goes up significantly.
if len(self._pfb_fir_filter) > 300:
print(
"Warning: The PFB FIR filter has an abnormal large number of taps:",
len(self._pfb_fir_filter),
file=sys.stderr)
print("Consider reducing the decimation factor",
file=sys.stderr)
pfb_input_delay = (
len(self._pfb_fir_filter) +
1) // 2 - self._channels / self._pfb_over_sample_ratio
self._pfb_delay = pfb_input_delay / decimation
self._channel_sample_rate = pfb_output_sample_rate
if self._verbose:
print("self._channels", self._channels, file=sys.stderr)
print("len(self._pfb_fir_filter)",
len(self._pfb_fir_filter),
file=sys.stderr)
print("self._pfb_over_sample_ratio",
self._pfb_over_sample_ratio,
file=sys.stderr)
print("self._fir_bw", self._fir_bw, file=sys.stderr)
print("self._fir_tw", self._fir_tw, file=sys.stderr)
print("self._channel_sample_rate",
self._channel_sample_rate,
file=sys.stderr)
else:
self._use_pfb = False
self._channel_sample_rate = self._input_sample_rate
self._channels = 1
# After 90 ms there needs to be a pause in the frame sturcture.
# Let's make that the limit for a detected burst
self._max_burst_len = int(self._channel_sample_rate * 0.09)
if self._verbose:
print("require %.1f dB" % self._threshold, file=sys.stderr)
print("burst_width: %d Hz" % self._burst_width, file=sys.stderr)
if self._filename.endswith(".conf"):
import configparser
config = configparser.ConfigParser()
config.read(self._filename)
items = config.items("osmosdr-source")
d = {key: value for key, value in items}
import osmosdr
if 'device_args' in d:
source = osmosdr.source(args=d['device_args'])
else:
source = osmosdr.source()
source.set_sample_rate(self._input_sample_rate)
source.set_center_freq(self._center_frequency, 0)
if 'gain' in d:
gain = int(d['gain'])
source.set_gain(gain, 0)
print("(RF) Gain:",
source.get_gain(0),
'(Requested %d)' % gain,
file=sys.stderr)
for key, value in d.items():
if key.endswith("_gain"):
gain_option_name = key.split('_')[0]
gain_value = int(value)
def match_gain(gain, gain_names):
for gain_name in gain_names:
if gain.lower() == gain_name.lower():
return gain_name
return None
gain_name = match_gain(gain_option_name,
source.get_gain_names())
if gain_name is not None:
source.set_gain(gain_value, gain_name, 0)
print(gain_name,
"Gain:",
source.get_gain(gain_name, 0),
'(Requested %d)' % gain_value,
file=sys.stderr)
else:
print("WARNING: Gain",
gain_option_name,
"not supported by source!",
file=sys.stderr)
print("Supported gains:",
source.get_gain_names(),
file=sys.stderr)
if 'bandwidth' in d:
bandwidth = int(d['bandwidth'])
source.set_bandwidth(bandwidth, 0)
print("Bandwidth:",
source.get_bandwidth(0),
'(Requested %d)' % bandwidth,
file=sys.stderr)
else:
source.set_bandwidth(0, 0)
print("Warning: Setting bandwidth to",
source.get_bandwidth(0),
file=sys.stderr)
if 'antenna' in d:
antenna = d['antenna']
source.set_antenna(antenna, 0)
print("Antenna:",
source.get_antenna(0),
'(Requested %s)' % antenna,
file=sys.stderr)
else:
print("Warning: Setting antenna to",
source.get_antenna(0),
file=sys.stderr)
#source.set_freq_corr($corr0, 0)
#source.set_dc_offset_mode($dc_offset_mode0, 0)
#source.set_iq_balance_mode($iq_balance_mode0, 0)
#source.set_gain_mode($gain_mode0, 0)
#source.set_antenna($ant0, 0)
else:
if sample_format == "rtl":
converter = iridium.iuchar_to_complex()
itemsize = gr.sizeof_char
scale = 1
elif sample_format == "hackrf":
converter = blocks.interleaved_char_to_complex()
itemsize = gr.sizeof_char
scale = 1 / 128.
elif sample_format == "sc16":
converter = blocks.interleaved_short_to_complex()
itemsize = gr.sizeof_short
scale = 1 / 32768.
elif sample_format == "float":
converter = None
itemsize = gr.sizeof_gr_complex
else:
raise RuntimeError(
"Unknown sample format for offline mode given")
if self._filename == '/dev/stdin':
file_source = blocks.file_descriptor_source(itemsize=itemsize,
fd=0,
repeat=False)
else:
file_source = blocks.file_source(itemsize=itemsize,
filename=self._filename,
repeat=False)
if converter:
multi = blocks.multiply_const_cc(scale)
tb.connect(file_source, converter, multi)
source = multi
else:
source = file_source
self._fft_burst_tagger = iridium.fft_burst_tagger(
center_frequency=self._center_frequency,
fft_size=self._fft_size,
sample_rate=self._input_sample_rate,
burst_pre_len=self._burst_pre_len,
burst_post_len=self._burst_post_len,
burst_width=int(self._burst_width),
max_bursts=max_bursts,
threshold=self._threshold,
history_size=512,
debug=self._verbose)
# Initial filter to filter the detected bursts. Runs at burst_sample_rate. Used to decimate the signal.
input_filter = gnuradio.filter.firdes.low_pass_2(
1, self._channel_sample_rate, self._burst_width / 2,
self._burst_width, 40)
#input_filter = gnuradio.filter.firdes.low_pass_2(1, self._channel_sample_rate, 42e3/2, 24e3, 40)
#print len(input_filter)
# Filter to find the start of the signal. Should be fairly narrow.
start_finder_filter = gnuradio.filter.firdes.low_pass_2(
1, self._burst_sample_rate, 5e3 / 2, 10e3 / 2, 60)
#print len(start_finder_filter)
self._iridium_qpsk_demod = iridium.iridium_qpsk_demod_cpp(
self._channels)
self._frame_sorter = iridium.frame_sorter()
self._iridium_frame_printer = iridium.iridium_frame_printer(file_info)
if raw_capture_filename:
multi = blocks.multiply_const_cc(32768)
converter = blocks.complex_to_interleaved_short()
raw_sink = blocks.file_sink(itemsize=gr.sizeof_short,
filename=raw_capture_filename)
tb.connect(source, multi, converter, raw_sink)
# Enable the following if not fast enough
#self._burst_to_pdu_converters = []
#self._burst_downmixers = []
#return
tb.connect(source, self._fft_burst_tagger)
if self._use_pfb:
self._burst_to_pdu_converters = []
self._burst_downmixers = []
sinks = []
for channel in range(self._channels):
center = channel if channel <= self._channels / 2 else (
channel - self._channels)
# Second and third parameters tell the block where after the PFB it sits.
relative_center = center / float(self._channels)
relative_span = 1. / self._channels
relative_sample_rate = relative_span * self._pfb_over_sample_ratio
burst_to_pdu_converter = iridium.tagged_burst_to_pdu(
self._max_burst_len, relative_center, relative_span,
relative_sample_rate,
-(self._pfb_delay + self._burst_pre_len / decimation),
self._max_queue_len, not self._offline)
burst_downmixer = iridium.burst_downmix(
self._burst_sample_rate,
int(0.007 * self._burst_sample_rate), 0, (input_filter),
(start_finder_filter),
self._handle_multiple_frames_per_burst)
if debug_id is not None: burst_downmixer.debug_id(debug_id)
self._burst_downmixers.append(burst_downmixer)
self._burst_to_pdu_converters.append(burst_to_pdu_converter)
#pfb_debug_sinks = [blocks.file_sink(itemsize=gr.sizeof_gr_complex, filename="/tmp/channel-%d.f32"%i) for i in range(self._channels)]
pfb_debug_sinks = None
pfb = gnuradio.filter.pfb.channelizer_ccf(
numchans=self._channels,
taps=self._pfb_fir_filter,
oversample_rate=self._pfb_over_sample_ratio)
tb.connect(self._fft_burst_tagger, pfb)
for i in range(self._channels):
tb.connect((pfb, i), self._burst_to_pdu_converters[i])
if pfb_debug_sinks:
tb.connect((pfb, i), pfb_debug_sinks[i])
tb.msg_connect((self._burst_to_pdu_converters[i], 'cpdus'),
(self._burst_downmixers[i], 'cpdus'))
tb.msg_connect(
(self._burst_downmixers[i], 'burst_handled'),
(self._burst_to_pdu_converters[i], 'burst_handled'))
tb.msg_connect((self._burst_downmixers[i], 'cpdus'),
(self._iridium_qpsk_demod, 'cpdus%d' % i))
else:
burst_downmix = iridium.burst_downmix(
self._burst_sample_rate, int(0.007 * self._burst_sample_rate),
0, (input_filter), (start_finder_filter),
self._handle_multiple_frames_per_burst)
if debug_id is not None: burst_downmix.debug_id(debug_id)
burst_to_pdu = iridium.tagged_burst_to_pdu(self._max_burst_len,
0.0, 1.0, 1.0,
-self._burst_pre_len,
self._max_queue_len,
not self._offline)
tb.connect(self._fft_burst_tagger, burst_to_pdu)
tb.msg_connect((burst_to_pdu, 'cpdus'), (burst_downmix, 'cpdus'))
tb.msg_connect((burst_downmix, 'burst_handled'),
(burst_to_pdu, 'burst_handled'))
# Final connection to the demodulator. It prints the output to stdout
tb.msg_connect((burst_downmix, 'cpdus'),
(self._iridium_qpsk_demod, 'cpdus'))
self._burst_downmixers = [burst_downmix]
self._burst_to_pdu_converters = [burst_to_pdu]
tb.msg_connect((self._iridium_qpsk_demod, 'pdus'),
(self._frame_sorter, 'pdus'))
tb.msg_connect((self._frame_sorter, 'pdus'),
(self._iridium_frame_printer, 'pdus'))