diff options
| author | jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5> | 2007-09-18 18:59:00 +0000 |
|---|---|---|
| committer | jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5> | 2007-09-18 18:59:00 +0000 |
| commit | e692e71305ecd71d3681fe37f3d76f350d67e276 (patch) | |
| tree | dc320c9261303aa9a92f4d12bdba85f82720d1bf /gnuradio-examples/python/limbo/sounder/usrp_sounder_tx.py | |
| parent | 6ad04a094ced626e46c210b9847eae46a1ae8e67 (diff) | |
Merge r6461:6464 from jcorgan/t162-staging into trunk.
* Final gr.top_block and gr.hier_block2 implementation inside
gnuradio-core/src/lib/runtime
* Implementation of gr.hier_block2 versions of all the old-style blocks
in blks. These live in blks2.
* Addition of gr.hier_block2 based versions of gr-wxgui blocks
* Conversion of all the example code in gnuradio-examples to use this
new code
* Conversion of all the gr-utils scripts to use the new code
The OFDM examples and related hierarchical blocks have not yet been
converted. Code in the rest of the tree that is outside the core
and example components has also not yet been converted.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@6466 221aa14e-8319-0410-a670-987f0aec2ac5
Diffstat (limited to 'gnuradio-examples/python/limbo/sounder/usrp_sounder_tx.py')
| -rwxr-xr-x | gnuradio-examples/python/limbo/sounder/usrp_sounder_tx.py | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/gnuradio-examples/python/limbo/sounder/usrp_sounder_tx.py b/gnuradio-examples/python/limbo/sounder/usrp_sounder_tx.py new file mode 100755 index 0000000000..ae531d5100 --- /dev/null +++ b/gnuradio-examples/python/limbo/sounder/usrp_sounder_tx.py @@ -0,0 +1,110 @@ +#!/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, eng_notation +from gnuradio.eng_option import eng_option +from optparse import OptionParser +from usrp_sink import usrp_sink_c +from sounder_tx import sounder_tx + +n2s = eng_notation.num_to_str + +class usrp_sounder_tx(gr.top_block): + def __init__(self, subdev_spec, freq, cal, verbose, degree, chip_rate, amplitude): + + # Call hierarchical block constructor + # Top-level blocks have no inputs or outputs + gr.top_block.__init__(self, "usrp_sounder_tx") + self._freq = freq + self._cal = cal + self._verbose = verbose + self._degree = degree + self._length = 2**degree-1 + self._amplitude = amplitude + + self._u = usrp_sink_c(0, subdev_spec, chip_rate, self._freq, self._cal, self._verbose) + self._chip_rate = self._u._if_rate + self._max_time = float(self._length)/self._chip_rate + self._pn = sounder_tx(self._degree, self._chip_rate, self._verbose) + self._gain = gr.multiply_const_ff(amplitude) + self._f2c = gr.float_to_complex() + self.connect(self._pn, self._gain, self._f2c, self._u) + + if self._verbose: + print "Chip rate is", n2s(self._chip_rate), "chips/sec" + print "Resolution is", n2s(1.0/self._chip_rate), "sec" + print "Using PN code of degree", self._degree, "length", 2**self._degree-1 + print "Maximum measurable impulse response is", n2s(self._max_time), "sec" + print "Output amplitude is", amplitude + + +def main(): + parser = OptionParser(option_class=eng_option) + + # Transmit path options + parser.add_option("-T", "--tx-subdev-spec", type="subdev", default=None, + help="select USRP Rx side A or B (default=first found)") + parser.add_option("-f", "--freq", type="eng_float", default=0.0, + help="set center frequency (default=%default)") + parser.add_option("-c", "--cal", type="eng_float", default=0.0, + help="set frequency calibration offset (default=%default)") + parser.add_option("-v", "--verbose", action="store_true", default=False, + help="print extra debugging info") + parser.add_option("-d", "--degree", type="int", default=10, + help="set PN code degree (length=2**degree-1, default=%default)") + parser.add_option("-r", "--chip-rate", type="eng_float", default=8e6, + help="set sounder chip rate (default=%default)") + parser.add_option("-g", "--amplitude", type="eng_float", default=8000.0, + help="set output amplitude (default=%default)") + parser.add_option("", "--real-time", action="store_true", default=False, + help="Attempt to enable real-time scheduling") + (options, args) = parser.parse_args() + + if len(args) != 0: + parser.print_help() + sys.exit(1) + + if not options.real_time: + realtime = False + else: + # Attempt to enable realtime scheduling + r = gr.enable_realtime_scheduling() + if r == gr.RT_OK: + realtime = True + else: + realtime = False + print "Note: failed to enable realtime scheduling" + + # Create an instance of a hierarchical block + top_block = usrp_sounder_tx(options.tx_subdev_spec, options.freq, options.cal, + options.verbose, options.degree, options.chip_rate, + options.amplitude) + + try: + # Run forever + top_block.run() + except KeyboardInterrupt: + # Ctrl-C exits + pass + +if __name__ == '__main__': + main () |