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sinusoid.py
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sinusoid.py
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#!/usr/bin/env python
#
# Copyright 2004,2005,2007 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 import audio
from gnuradio.eng_option import eng_option
from optparse import OptionParser
from gnuradio import uhd
from grc_gnuradio import blks2 as grc_blks2
import time
class my_top_block(gr.top_block):
def __init__(self):
gr.top_block.__init__(self)
parser = OptionParser(option_class=eng_option)
parser.add_option("-r", "--sample-rate", type="eng_float", default=1000000,
help="set sample rate to RATE [default=%default]")
parser.add_option("-f", "--freq", type="eng_float", default=650000000,
help="set RF frequency [default=%default]")
parser.add_option("", "--sin_freq", type="eng_float", default=100000,
help="set sinusoid frequency [default=%default]")
parser.add_option("-a", "--amp", type="eng_float", default=.8,
help="set sinusoid amplitude, 0<=amp<=1 [default=%default]")
(options, args) = parser.parse_args ()
if len(args) != 0:
parser.print_help()
raise SystemExit, 1
sample_rate = int(options.sample_rate)
ampl = options.amp
src0 = gr.sig_source_c (sample_rate, gr.GR_SIN_WAVE, options.sin_freq, ampl)
self.dst = uhd.usrp_sink(device_addr="", io_type=uhd.io_type.COMPLEX_FLOAT32, num_channels=1)
self.dst.set_samp_rate(sample_rate)
self.dst.set_center_freq(options.freq, 0)
self.dst.set_gain(self.dst.get_gain_range().stop()/2, 0)
self.connect (src0, self.dst)
if __name__ == '__main__':
tb = my_top_block()
try:
tb.start() # start executing flow graph in another thread...
while 1:
pass
except KeyboardInterrupt:
tb.stop()
tb.wait()