From 6d9a16470bbb416d311a8830d7db42d6c69a39cf Mon Sep 17 00:00:00 2001
From: Johnathan Corgan <johnathan@corganlabs.com>
Date: Thu, 8 Sep 2016 13:15:11 -0700
Subject: wxgui: removed
---
gr-uhd/examples/python/freq_hopping.py | 220 ---------------------------------
1 file changed, 220 deletions(-)
delete mode 100755 gr-uhd/examples/python/freq_hopping.py
(limited to 'gr-uhd/examples/python/freq_hopping.py')
diff --git a/gr-uhd/examples/python/freq_hopping.py b/gr-uhd/examples/python/freq_hopping.py
deleted file mode 100755
index ce33a92a51..0000000000
--- a/gr-uhd/examples/python/freq_hopping.py
+++ /dev/null
@@ -1,220 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2014 Free Software Foundation, Inc.
-#
-# This file is part of GNU Radio
-#
-# GNU Radio is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-#
-# GNU Radio is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING. If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
-#
-
-"""
-TXs a waveform (either from a file, or a sinusoid) in a frequency-hopping manner.
-"""
-
-import numpy
-import argparse
-import pmt
-from gnuradio import gr
-from gnuradio import blocks
-from gnuradio import uhd
-
-def setup_parser():
- """ Setup the parser for the frequency hopper. """
- parser = argparse.ArgumentParser(
- description="Transmit a signal in a frequency-hopping manner, using tx_freq tags."
- )
- parser.add_argument('-i', '--input-file', type=file, default=None,
- help="File with samples to transmit. If left out, will transmit a sinusoid.")
- parser.add_argument("-a", "--args", default="",
- help="UHD device address args.")
- parser.add_argument("--spec", default="",
- help="UHD subdev spec.")
- parser.add_argument("--antenna", default="",
- help="UHD antenna settings.")
- parser.add_argument("--gain", default=None, type=float,
- help="USRP gain (defaults to mid-point in dB).")
- parser.add_argument("-r", "--rate", type=float, default=1e6,
- help="Sampling rate")
- parser.add_argument("-N", "--samp-per-burst", type=int, default=10000,
- help="Samples per burst")
- parser.add_argument("-t", "--hop-time", type=float, default=1000,
- help="Time between hops in milliseconds. This must be larger than or equal to the burst duration as set by --samp-per-burst")
- parser.add_argument("-f", "--freq", type=float, default=2.45e9,
- help="Base frequency. This is the middle channel frequency at which the USRP will Tx.")
- parser.add_argument("--dsp", action='store_true',
- help="DSP tuning only.")
- parser.add_argument("-d", "--freq-delta", type=float, default=1e6,
- help="Channel spacing.")
- parser.add_argument("-c", "--num-channels", type=int, default=5,
- help="Number of channels.")
- parser.add_argument("-B", "--num-bursts", type=int, default=30,
- help="Number of bursts to transmit before terminating.")
- parser.add_argument("-p", "--post-tuning", action='count',
- help="Tune after transmitting. Default is to tune immediately before transmitting.")
- parser.add_argument("-v", "--verbose", action='count',
- help="Print more information. The morer the printier.")
- return parser
-
-
-class FrequencyHopperSrc(gr.hier_block2):
- """ Provides tags for frequency hopping """
- def __init__(
- self,
- n_bursts, n_channels,
- freq_delta, base_freq, dsp_tuning,
- burst_length, base_time, hop_time,
- post_tuning=False,
- tx_gain=0,
- verbose=False
- ):
- gr.hier_block2.__init__(self,
- "FrequencyHopperSrc",
- gr.io_signature(1, 1, gr.sizeof_gr_complex),
- gr.io_signature(1, 1, gr.sizeof_gr_complex),
- )
- n_samples_total = n_bursts * burst_length
- lowest_frequency = base_freq - numpy.floor(n_channels/2) * freq_delta
- self.hop_sequence = [lowest_frequency + n * freq_delta for n in xrange(n_channels)]
- numpy.random.shuffle(self.hop_sequence)
- # Repeat that:
- self.hop_sequence = [self.hop_sequence[x % n_channels] for x in xrange(n_bursts)]
- if verbose:
- print "Hop Frequencies | Hop Pattern"
- print "=================|================================"
- for f in self.hop_sequence:
- print "{:6.3f} MHz | ".format(f/1e6),
- if n_channels < 50:
- print " " * int((f - base_freq) / freq_delta) + "#"
- else:
- print "\n"
- print "=================|================================"
- # There's no real point in setting the gain via tag for this application,
- # but this is an example to show you how to do it.
- gain_tag = gr.tag_t()
- gain_tag.offset = 0
- gain_tag.key = pmt.string_to_symbol('tx_command')
- gain_tag.value = pmt.to_pmt({'gain': tx_gain})
- tag_list = [gain_tag,]
- for i in xrange(len(self.hop_sequence)):
- tune_tag = gr.tag_t()
- tune_tag.offset = i * burst_length
- if i > 0 and post_tuning and not dsp_tuning: # TODO dsp_tuning should also be able to do post_tuning
- tune_tag.offset -= 1 # Move it to last sample of previous burst
- if dsp_tuning:
- tune_tag.key = pmt.string_to_symbol('tx_command')
- tune_tag.value = pmt.to_pmt({'lo_freq': base_freq, 'dsp_freq': base_freq - self.hop_sequence[i]})
- else:
- tune_tag.key = pmt.string_to_symbol('tx_freq')
- tune_tag.value = pmt.to_pmt(self.hop_sequence[i])
- tag_list.append(tune_tag)
- length_tag = gr.tag_t()
- length_tag.offset = i * burst_length
- length_tag.key = pmt.string_to_symbol('packet_len')
- length_tag.value = pmt.from_long(burst_length)
- tag_list.append(length_tag)
- time_tag = gr.tag_t()
- time_tag.offset = i * burst_length
- time_tag.key = pmt.string_to_symbol('tx_time')
- time_tag.value = pmt.make_tuple(
- pmt.from_uint64(int(base_time + i * hop_time)),
- pmt.from_double((base_time + i * hop_time) % 1),
- )
- tag_list.append(time_tag)
- tag_source = blocks.vector_source_c((1.0,) * n_samples_total, repeat=False, tags=tag_list)
- mult = blocks.multiply_cc()
- self.connect(self, mult, self)
- self.connect(tag_source, (mult, 1))
-
-
-class FlowGraph(gr.top_block):
- """ Flow graph that does the frequency hopping. """
- def __init__(self, options):
- gr.top_block.__init__(self)
-
- if options.input_file is not None:
- src = blocks.file_source(gr.sizeof_gr_complex, options.filename, repeat=True)
- else:
- src = blocks.vector_source_c((.5,) * int(1e6) * 2, repeat=True)
- # Setup USRP
- self.u = uhd.usrp_sink(options.args, uhd.stream_args('fc32'), "packet_len")
- if(options.spec):
- self.u.set_subdev_spec(options.spec, 0)
- if(options.antenna):
- self.u.set_antenna(options.antenna, 0)
- self.u.set_samp_rate(options.rate)
- # Gain is set in the hopper block
- if options.gain is None:
- g = self.u.get_gain_range()
- options.gain = float(g.start()+g.stop())/2.0
- print "-- Setting gain to {} dB".format(options.gain)
- r = self.u.set_center_freq(options.freq)
- if not r:
- print '[ERROR] Failed to set base frequency.'
- raise SystemExit, 1
- hopper_block = FrequencyHopperSrc(
- options.num_bursts, options.num_channels,
- options.freq_delta, options.freq, options.dsp,
- options.samp_per_burst, 1.0, options.hop_time / 1000.,
- options.post_tuning,
- options.gain,
- options.verbose,
- )
- self.connect(src, hopper_block, self.u)
-
-def print_hopper_stats(args):
- """ Nothing to do with Grace Hopper """
- print """
-Parameter | Value
-===================+=========================
-Hop Interval | {hop_time} ms
-Burst duration | {hop_duration} ms
-Lowest Frequency | {lowest_freq:6.3f} MHz
-Highest Frequency | {highest_freq:6.3f} MHz
-Frequency spacing | {freq_delta:6.4f} MHz
-Number of channels | {num_channels}
-Sampling rate | {rate} Msps
-Transmit Gain | {gain} dB
-===================+=========================
- """.format(
- hop_time=args.hop_time,
- hop_duration=1000.0/args.rate*args.samp_per_burst,
- gain=args.gain,
- lowest_freq=args.freq/1e6,
- highest_freq=(args.freq + (args.num_channels-1) * args.freq_delta)/1e6,
- freq_delta=args.freq_delta/1e6,
- num_channels=args.num_channels,
- rate=args.rate/1e6,
- )
-
-def main():
- """ Go, go, go! """
- args = setup_parser().parse_args()
- if (1.0 * args.samp_per_burst / args.rate) > args.hop_time * 1e-3:
- print "Burst duration must be smaller than hop time."
- exit(1)
- if args.verbose:
- print_hopper_stats(args)
- top_block = FlowGraph(args)
- print "Starting to hop, skip and jump... press Ctrl+C to exit."
- top_block.u.set_time_now(uhd.time_spec(0.0))
- top_block.run()
-
-if __name__ == '__main__':
- try:
- main()
- except KeyboardInterrupt:
- pass
-
--
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