diff options
Diffstat (limited to 'gnuradio-examples/python/digital/benchmark_tx.py')
| -rwxr-xr-x | gnuradio-examples/python/digital/benchmark_tx.py | 127 |
1 files changed, 4 insertions, 123 deletions
diff --git a/gnuradio-examples/python/digital/benchmark_tx.py b/gnuradio-examples/python/digital/benchmark_tx.py index 225d10386..73c4a3901 100755 --- a/gnuradio-examples/python/digital/benchmark_tx.py +++ b/gnuradio-examples/python/digital/benchmark_tx.py @@ -29,9 +29,7 @@ from optparse import OptionParser import random, time, struct, sys # from current dir -from transmit_path import transmit_path -from pick_bitrate import pick_tx_bitrate -import usrp_options +import usrp_transmit_path #import os #print os.getpid() @@ -41,124 +39,9 @@ class my_top_block(gr.top_block): def __init__(self, modulator, options): gr.top_block.__init__(self) - self._tx_freq = options.tx_freq # tranmitter's center frequency - self._interp = options.interp # interpolating rate for the USRP (prelim) - self._bitrate = options.bitrate - self._samples_per_symbol = options.samples_per_symbol - self._modulator_class = modulator - - 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(options) - - # copy the final answers back into options for use by modulator - options.samples_per_symbol = self._samples_per_symbol - options.bitrate = self._bitrate - options.interp = self._interp - - # 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.u.gain_range()[1]) - - self.txpath = transmit_path(modulator, options) - - self.connect(self.txpath, self.u) - - def _setup_usrp_sink(self, options): - """ - Creates a USRP sink, determines the settings for best bitrate, - and attaches to the transmitter's subdevice. - """ - self.u = usrp_options.create_usrp_sink(options) - dac_rate = self.u.dac_rate() - - (self._bitrate, self._samples_per_symbol, self._interp) = \ - pick_tx_bitrate(self._bitrate, self._modulator_class.bits_per_symbol(), \ - self._samples_per_symbol, self._interp, dac_rate, \ - self.u.get_interp_rates()) - - self.u.set_interp(self._interp) - self.set_auto_tr(True) # enable Auto Transmit/Receive switching - - 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. - """ - return self.u.set_center_freq(target_freq) - - def set_gain(self, gain): - """ - Sets the analog gain in the USRP - """ - self.gain = gain - self.u.set_gain(gain) - - def set_auto_tr(self, enable): - """ - Turns on auto transmit/receive of USRP daughterboard (if exits; else ignored) - """ - return self.u.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") + self.txpath = usrp_transmit_path.usrp_transmit_path(modulator, options) + self.connect(self.txpath) # ///////////////////////////////////////////////////////////////////////////// # main @@ -191,9 +74,7 @@ def main(): parser.add_option("","--from-file", default=None, help="use file for packet contents") - my_top_block.add_options(parser, expert_grp) - transmit_path.add_options(parser, expert_grp) - usrp_options.add_tx_options(parser) + usrp_transmit_path.add_options(parser, expert_grp) for mod in mods.values(): mod.add_options(expert_grp) |