diff options
Diffstat (limited to 'gnuradio-examples/python/ofdm/benchmark_ofdm_tx.py')
| -rwxr-xr-x | gnuradio-examples/python/ofdm/benchmark_ofdm_tx.py | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/gnuradio-examples/python/ofdm/benchmark_ofdm_tx.py b/gnuradio-examples/python/ofdm/benchmark_ofdm_tx.py deleted file mode 100755 index 918ff0842..000000000 --- a/gnuradio-examples/python/ofdm/benchmark_ofdm_tx.py +++ /dev/null @@ -1,219 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2005, 2006 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, blks2 -from gnuradio import usrp -from gnuradio import eng_notation -from gnuradio.eng_option import eng_option -from optparse import OptionParser - -import time, struct, sys - -# from current dir -from transmit_path import transmit_path -from pick_bitrate import pick_tx_bitrate -import fusb_options - -class my_top_block(gr.top_block): - def __init__(self, options): - gr.top_block.__init__(self) - - self._tx_freq = options.tx_freq # tranmitter's center frequency - self._tx_subdev_spec = options.tx_subdev_spec # daughterboard to use - self._interp = options.interp # interpolating rate for the USRP (prelim) - self._fusb_block_size = options.fusb_block_size # usb info for USRP - self._fusb_nblocks = options.fusb_nblocks # usb info for USRP - - if self._tx_freq is None: - sys.stderr.write("-f FREQ or --freq FREQ or --tx-freq FREQ must be specified\n") - raise SystemExit - - # Set up USRP sink; also adjusts interp, and bitrate - self._setup_usrp_sink() - - # copy the final answers back into options for use by modulator - #options.bitrate = self._bitrate - - self.txpath = transmit_path(options) - - self.connect(self.txpath, self.u) - - def _setup_usrp_sink(self): - """ - Creates a USRP sink, determines the settings for best bitrate, - and attaches to the transmitter's subdevice. - """ - self.u = usrp.sink_c(fusb_block_size=self._fusb_block_size, - fusb_nblocks=self._fusb_nblocks) - - self.u.set_interp_rate(self._interp) - - # determine the daughterboard subdevice we're using - if self._tx_subdev_spec is None: - self._tx_subdev_spec = usrp.pick_tx_subdevice(self.u) - self.u.set_mux(usrp.determine_tx_mux_value(self.u, self._tx_subdev_spec)) - self.subdev = usrp.selected_subdev(self.u, self._tx_subdev_spec) - - # Set center frequency of USRP - ok = self.set_freq(self._tx_freq) - if not ok: - print "Failed to set Tx frequency to %s" % (eng_notation.num_to_str(self._tx_freq),) - raise ValueError - - # Set the USRP for maximum transmit gain - # (Note that on the RFX cards this is a nop.) - self.set_gain(self.subdev.gain_range()[1]) - - # enable Auto Transmit/Receive switching - self.set_auto_tr(True) - - def set_freq(self, target_freq): - """ - Set the center frequency we're interested in. - - @param target_freq: frequency in Hz - @rypte: bool - - Tuning is a two step process. First we ask the front-end to - tune as close to the desired frequency as it can. Then we use - the result of that operation and our target_frequency to - determine the value for the digital up converter. - """ - r = self.u.tune(self.subdev.which(), self.subdev, target_freq) - if r: - return True - - return False - - def set_gain(self, gain): - """ - Sets the analog gain in the USRP - """ - self.gain = gain - self.subdev.set_gain(gain) - - def set_auto_tr(self, enable): - """ - Turns on auto transmit/receive of USRP daughterboard (if exits; else ignored) - """ - return self.subdev.set_auto_tr(enable) - - def interp(self): - return self._interp - - def add_options(normal, expert): - """ - Adds usrp-specific options to the Options Parser - """ - add_freq_option(normal) - normal.add_option("-T", "--tx-subdev-spec", type="subdev", default=None, - help="select USRP Tx side A or B") - normal.add_option("-v", "--verbose", action="store_true", default=False) - - expert.add_option("", "--tx-freq", type="eng_float", default=None, - help="set transmit frequency to FREQ [default=%default]", metavar="FREQ") - expert.add_option("-i", "--interp", type="intx", default=256, - help="set fpga interpolation rate to INTERP [default=%default]") - # Make a static method to call before instantiation - add_options = staticmethod(add_options) - - def _print_verbage(self): - """ - Prints information about the transmit path - """ - print "Using TX d'board %s" % (self.subdev.side_and_name(),) - print "modulation: %s" % (self._modulator_class.__name__) - print "interp: %3d" % (self._interp) - print "Tx Frequency: %s" % (eng_notation.num_to_str(self._tx_freq)) - - -def add_freq_option(parser): - """ - Hackery that has the -f / --freq option set both tx_freq and rx_freq - """ - def freq_callback(option, opt_str, value, parser): - parser.values.rx_freq = value - parser.values.tx_freq = value - - if not parser.has_option('--freq'): - parser.add_option('-f', '--freq', type="eng_float", - action="callback", callback=freq_callback, - help="set Tx and/or Rx frequency to FREQ [default=%default]", - metavar="FREQ") - -# ///////////////////////////////////////////////////////////////////////////// -# main -# ///////////////////////////////////////////////////////////////////////////// - -def main(): - - def send_pkt(payload='', eof=False): - return tb.txpath.send_pkt(payload, eof) - - parser = OptionParser(option_class=eng_option, conflict_handler="resolve") - expert_grp = parser.add_option_group("Expert") - parser.add_option("-s", "--size", type="eng_float", default=400, - help="set packet size [default=%default]") - parser.add_option("-M", "--megabytes", type="eng_float", default=1.0, - help="set megabytes to transmit [default=%default]") - parser.add_option("","--discontinuous", action="store_true", default=False, - help="enable discontinuous mode") - - my_top_block.add_options(parser, expert_grp) - transmit_path.add_options(parser, expert_grp) - blks2.ofdm_mod.add_options(parser, expert_grp) - blks2.ofdm_demod.add_options(parser, expert_grp) - fusb_options.add_options(expert_grp) - - (options, args) = parser.parse_args () - - # build the graph - tb = my_top_block(options) - - r = gr.enable_realtime_scheduling() - if r != gr.RT_OK: - print "Warning: failed to enable realtime scheduling" - - tb.start() # start flow graph - - # generate and send packets - nbytes = int(1e6 * options.megabytes) - n = 0 - pktno = 0 - pkt_size = int(options.size) - - while n < nbytes: - send_pkt(struct.pack('!H', pktno) + (pkt_size - 2) * chr(pktno & 0xff)) - n += pkt_size - sys.stderr.write('.') - if options.discontinuous and pktno % 5 == 1: - time.sleep(1) - pktno += 1 - - send_pkt(eof=True) - tb.wait() # wait for it to finish - -if __name__ == '__main__': - try: - main() - except KeyboardInterrupt: - pass |