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#!/usr/bin/env python
#
# Copyright 2007 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.
#
from gnuradio import gr
from gnuradio.radar_mono import radar
from gnuradio import eng_notation
from gnuradio.eng_option import eng_option
from optparse import OptionParser
import sys, time
n2s = eng_notation.num_to_str
logfile = None
def process_echo(echo):
global logfile
if logfile is not None:
logfile.write(echo)
def main():
global logfile
parser = OptionParser(option_class=eng_option)
parser.add_option("-T", "--tx-subdev-spec", type="subdev", default=None,
help="use transmitter board side A or B (default is first found)")
parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None,
help="use receiver board side A or B (default is first found)")
parser.add_option("-g", "--gain", type="eng_float", default=None,
help="set gain in dB (default is midpoint)")
parser.add_option("-f", "--frequency", type="eng_float", default=0.0,
help="set transmitter center frequency to FREQ in Hz, default is %default", metavar="FREQ")
parser.add_option("-w", "--chirp-width", type="eng_float", default=32e6,
help="set LFM chirp bandwidth in Hz, default is %default", metavar="FREQ")
parser.add_option("-a", "--amplitude", type="eng_float", default=15,
help="set waveform amplitude in % full scale, default is %default,")
parser.add_option("", "--ton", type="eng_float", default=5e-6,
help="set pulse on period in seconds, default is %default,")
parser.add_option("", "--tsw", type="eng_float", default=0.0,
help="set transmitter switching period in seconds, default is %default,")
parser.add_option("", "--tlook", type="eng_float", default=5e-6,
help="set receiver look time in seconds, default is %default,")
parser.add_option("", "--prf", type="eng_float", default=100,
help="set pulse repetition frequency in Hz, default is %default,")
parser.add_option("-v", "--verbose", action="store_true", default=False,
help="enable verbose output, default is disabled")
parser.add_option("-D", "--debug", action="store_true", default=False,
help="enable debugging output, default is disabled")
parser.add_option("-F", "--filename", default=None,
help="log received echos to file")
(options, args) = parser.parse_args()
if len(args) != 0:
parser.print_help()
sys.exit(1)
if options.filename is not None:
if options.verbose:
print "Logging echo records to file: ", options.filename
logfile = open(options.filename, 'wb')
r = radar(options, process_echo)
r.set_ton(options.ton)
r.set_tsw(options.tsw)
r.set_tlook(options.tlook)
r.set_prf(options.prf)
r.set_amplitude(options.amplitude)
r.set_freq(options.frequency, options.chirp_width)
r.start()
raw_input("Press ENTER to stop.")
r.stop()
if logfile is not None:
logfile.close()
if __name__ == "__main__":
main()
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