uhd_gnuradio_crasher.py

from gnuradio import blocks
from gnuradio import gr
from gnuradio import uhd

import random

sample_rate = int(2e6)
num_acquisition = 1000


class simple_acquirer(gr.top_block):
    def __init__(self, sdr):
        gr.top_block.__init__(
            self, "Simple acquirer",
        )
        self.sdr = sdr
        self.head = blocks.head(gr.sizeof_gr_complex * 1, int(1 * sample_rate))
        self.sink = blocks.null_sink(gr.sizeof_gr_complex * 1)
        self.connect((self.sdr, 0), (self.head, 0))
        self.connect((self.head, 0), (self.sink, 0))


sdr = uhd.usrp_source(
    "",
    uhd.stream_args(
        cpu_format="fc32",
        otw_format="fc32",
        channels=range(1),
    ),
)

sdr.set_clock_source("gpsdo")
sdr.set_samp_rate(sample_rate)

sdr.set_gain(56, 0)
sdr.set_antenna("RX2", 0)
sdr.set_bandwidth(2e6, 0)

receiver = simple_acquirer(sdr)

for i in range(num_acquisition):
    freq = random.randint(1e9, 2e9)
    print("Tuning to {0} MHz".format(freq / 1e6))
    dummy = sdr.set_center_freq(freq)
    receiver.start()
    receiver.wait()
    receiver.stop()
    print("Acquisition N° {0} finished\n".format(i))