diff options
| author | Tom Rondeau <trondeau@vt.edu> | 2011-10-12 16:57:51 -0400 |
|---|---|---|
| committer | Tom Rondeau <trondeau@vt.edu> | 2011-10-12 16:57:51 -0400 |
| commit | d1e3108c8705289d194300ca9fad1c22f579be9b (patch) | |
| tree | a0fab09f48e0dddda2f40ef2af5e4df757a341b6 /gr-digital/examples/transmit_path.py | |
| parent | 06860c309153890a6a42babfbedf230eb24f0042 (diff) | |
digital: moved narrowband examples to their own directory (to make room for OFDM examples).
Diffstat (limited to 'gr-digital/examples/transmit_path.py')
| -rw-r--r-- | gr-digital/examples/transmit_path.py | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/gr-digital/examples/transmit_path.py b/gr-digital/examples/transmit_path.py deleted file mode 100644 index 3af37f3308..0000000000 --- a/gr-digital/examples/transmit_path.py +++ /dev/null @@ -1,121 +0,0 @@ -# -# Copyright 2005-2007,2011 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, gru -from gnuradio import eng_notation -from gnuradio import digital - -import copy -import sys - -# ///////////////////////////////////////////////////////////////////////////// -# transmit path -# ///////////////////////////////////////////////////////////////////////////// - -class transmit_path(gr.hier_block2): - def __init__(self, modulator_class, options): - ''' - See below for what options should hold - ''' - gr.hier_block2.__init__(self, "transmit_path", - gr.io_signature(0,0,0), - gr.io_signature(1,1,gr.sizeof_gr_complex)) - - options = copy.copy(options) # make a copy so we can destructively modify - - self._verbose = options.verbose - self._tx_amplitude = options.tx_amplitude # digital amplitude sent to USRP - self._bitrate = options.bitrate # desired bit rate - self._modulator_class = modulator_class # the modulator_class we are using - - # Get mod_kwargs - mod_kwargs = self._modulator_class.extract_kwargs_from_options(options) - - # transmitter - self.modulator = self._modulator_class(**mod_kwargs) - - self.packet_transmitter = \ - digital.mod_pkts(self.modulator, - access_code=None, - msgq_limit=4, - pad_for_usrp=True) - - self.amp = gr.multiply_const_cc(1) - self.set_tx_amplitude(self._tx_amplitude) - - # Display some information about the setup - if self._verbose: - self._print_verbage() - - # Connect components in the flowgraph - self.connect(self.packet_transmitter, self.amp, self) - - def set_tx_amplitude(self, ampl): - """ - Sets the transmit amplitude sent to the USRP in volts - @param: ampl 0 <= ampl < 1. - """ - self._tx_amplitude = max(0.0, min(ampl, 1)) - self.amp.set_k(self._tx_amplitude) - - def send_pkt(self, payload='', eof=False): - """ - Calls the transmitter method to send a packet - """ - return self.packet_transmitter.send_pkt(payload, eof) - - def bitrate(self): - return self._bitrate - - def samples_per_symbol(self): - return self.modulator._samples_per_symbol - - def differential(self): - return self.modulator._differential - - def add_options(normal, expert): - """ - Adds transmitter-specific options to the Options Parser - """ - if not normal.has_option('--bitrate'): - normal.add_option("-r", "--bitrate", type="eng_float", default=100e3, - help="specify bitrate [default=%default].") - normal.add_option("", "--tx-amplitude", type="eng_float", default=0.250, metavar="AMPL", - help="set transmitter digital amplitude: 0 <= AMPL < 1 [default=%default]") - normal.add_option("-v", "--verbose", action="store_true", default=False) - - expert.add_option("-S", "--samples-per-symbol", type="float", default=2, - help="set samples/symbol [default=%default]") - expert.add_option("", "--log", action="store_true", default=False, - help="Log all parts of flow graph to file (CAUTION: lots of data)") - - # Make a static method to call before instantiation - add_options = staticmethod(add_options) - - def _print_verbage(self): - """ - Prints information about the transmit path - """ - print "Tx amplitude %s" % (self._tx_amplitude) - print "modulation: %s" % (self._modulator_class.__name__) - print "bitrate: %sb/s" % (eng_notation.num_to_str(self._bitrate)) - print "samples/symbol: %.4f" % (self.samples_per_symbol()) - print "Differential: %s" % (self.differential()) |