def main():
data = scipy.arange(0, 32000, 1).tolist()
trig = 100*[0,] + 100*[1,]
src = gr.vector_source_s(data, True)
trigger = gr.vector_source_s(trig, True)
thr = gr.throttle(gr.sizeof_short, 10e3)
ann = gr.annotator_alltoall(1000000, gr.sizeof_short)
tagger = gr.burst_tagger(gr.sizeof_short)
fsnk = gr.tagged_file_sink(gr.sizeof_short, 1)
tb = gr.top_block()
tb.connect(src, thr, (tagger, 0))
tb.connect(trigger, (tagger, 1))
tb.connect(tagger, fsnk)
tb.run()
def main():
data = scipy.arange(0, 32000, 1).tolist()
trig = 100 * [
0,
] + 100 * [
1,
]
src = gr.vector_source_s(data, True)
trigger = gr.vector_source_s(trig, True)
thr = gr.throttle(gr.sizeof_short, 10e3)
ann = gr.annotator_alltoall(1000000, gr.sizeof_short)
tagger = gr.burst_tagger(gr.sizeof_short)
fsnk = gr.tagged_file_sink(gr.sizeof_short, 1)
tb = gr.top_block()
tb.connect(src, thr, (tagger, 0))
tb.connect(trigger, (tagger, 1))
tb.connect(tagger, fsnk)
tb.run()
def __init__(self,
frequency,
sample_rate,
uhd_address="192.168.10.2",
trigger=False):
gr.top_block.__init__(self)
self.freq = frequency
self.samp_rate = sample_rate
self.uhd_addr = uhd_address
self.gain = 32
self.trigger = trigger
self.uhd_src = uhd.single_usrp_source(
device_addr=self.uhd_addr,
io_type=uhd.io_type_t.COMPLEX_FLOAT32,
num_channels=1,
)
self.uhd_src.set_samp_rate(self.samp_rate)
self.uhd_src.set_center_freq(self.freq, 0)
self.uhd_src.set_gain(self.gain, 0)
taps = firdes.low_pass_2(1, 1, 0.4, 0.1, 60)
self.chanfilt = gr.fir_filter_ccc(10, taps)
self.ann0 = gr.annotator_alltoall(100000, gr.sizeof_gr_complex)
self.tagger = gr.burst_tagger(gr.sizeof_gr_complex)
# Dummy signaler to collect a burst on known periods
data = 1000 * [
0,
] + 1000 * [
1,
]
self.signal = gr.vector_source_s(data, True)
# Energy detector to get signal burst
self.c2m = gr.complex_to_mag_squared()
self.iir = gr.single_pole_iir_filter_ff(0.0001)
self.sub = gr.sub_ff()
self.mult = gr.multiply_const_ff(32768)
self.f2s = gr.float_to_short()
self.fsnk = gr.tagged_file_sink(gr.sizeof_gr_complex, self.samp_rate)
##################################################
# Connections
##################################################
self.connect((self.uhd_src, 0), (self.tagger, 0))
self.connect((self.tagger, 0), (self.fsnk, 0))
if self.trigger:
# Connect a dummy signaler to the burst tagger
self.connect((self.signal, 0), (self.tagger, 1))
else:
# Connect an energy detector signaler to the burst tagger
self.connect((self.uhd_src, 0), (self.c2m, 0))
self.connect((self.c2m, 0), (self.sub, 0))
self.connect((self.c2m, 0), (self.iir, 0))
self.connect((self.iir, 0), (self.sub, 1))
self.connect((self.sub, 0), (self.mult, 0))
self.connect((self.mult, 0), (self.f2s, 0))
self.connect((self.f2s, 0), (self.tagger, 1))
