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Diffstat (limited to 'gr-digital/examples/narrowband/uhd_interface.py')
| -rw-r--r-- | gr-digital/examples/narrowband/uhd_interface.py | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/gr-digital/examples/narrowband/uhd_interface.py b/gr-digital/examples/narrowband/uhd_interface.py deleted file mode 100644 index fe022c731..000000000 --- a/gr-digital/examples/narrowband/uhd_interface.py +++ /dev/null @@ -1,225 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2010,2011 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, uhd -from gnuradio import eng_notation -from gnuradio.eng_option import eng_option -from optparse import OptionParser - -import sys - -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") - -class uhd_interface: - def __init__(self, istx, args, sym_rate, sps, freq=None, - gain=None, spec=None, antenna=None): - - if(istx): - self.u = uhd.usrp_sink(device_addr=args, stream_args=uhd.stream_args('fc32')) - else: - self.u = uhd.usrp_source(device_addr=args, stream_args=uhd.stream_args('fc32')) - - # Set the subdevice spec - if(spec): - self.u.set_subdev_spec(spec, 0) - - # Set the antenna - if(antenna): - self.u.set_antenna(antenna, 0) - - self._args = args - self._ant = antenna - self._spec = spec - self._gain = self.set_gain(gain) - self._freq = self.set_freq(freq) - - self._rate, self._sps = self.set_sample_rate(sym_rate, sps) - - def set_sample_rate(self, sym_rate, req_sps): - start_sps = req_sps - while(True): - asked_samp_rate = sym_rate * req_sps - self.u.set_samp_rate(asked_samp_rate) - actual_samp_rate = self.u.get_samp_rate() - - sps = actual_samp_rate/sym_rate - if(sps < 2): - req_sps +=1 - else: - actual_sps = sps - break - - if(sps != req_sps): - print "\nSymbol Rate: %f" % (sym_rate) - print "Requested sps: %f" % (start_sps) - print "Given sample rate: %f" % (actual_samp_rate) - print "Actual sps for rate: %f" % (actual_sps) - - if(actual_samp_rate != asked_samp_rate): - print "\nRequested sample rate: %f" % (asked_samp_rate) - print "Actual sample rate: %f" % (actual_samp_rate) - - return (actual_samp_rate, actual_sps) - - def get_sample_rate(self): - return self.u.get_samp_rate() - - def set_gain(self, gain=None): - if gain is None: - # if no gain was specified, use the mid-point in dB - g = self.u.get_gain_range() - gain = float(g.start()+g.stop())/2 - print "\nNo gain specified." - print "Setting gain to %f (from [%f, %f])" % \ - (gain, g.start(), g.stop()) - - self.u.set_gain(gain, 0) - return gain - - def set_freq(self, freq=None): - if(freq is None): - sys.stderr.write("You must specify -f FREQ or --freq FREQ\n") - sys.exit(1) - - r = self.u.set_center_freq(freq, 0) - if r: - return freq - else: - frange = self.u.get_freq_range() - sys.stderr.write(("\nRequested frequency (%f) out or range [%f, %f]\n") % \ - (freq, frange.start(), frange.stop())) - sys.exit(1) - -#-------------------------------------------------------------------# -# TRANSMITTER -#-------------------------------------------------------------------# - -class uhd_transmitter(uhd_interface, gr.hier_block2): - def __init__(self, args, sym_rate, sps, freq=None, gain=None, - spec=None, antenna=None, verbose=False): - gr.hier_block2.__init__(self, "uhd_transmitter", - gr.io_signature(1,1,gr.sizeof_gr_complex), - gr.io_signature(0,0,0)) - - # Set up the UHD interface as a transmitter - uhd_interface.__init__(self, True, args, sym_rate, sps, - freq, gain, spec, antenna) - - self.connect(self, self.u) - - if(verbose): - self._print_verbage() - - def add_options(parser): - add_freq_option(parser) - parser.add_option("-a", "--args", type="string", default="", - help="UHD device address args [default=%default]") - parser.add_option("", "--spec", type="string", default=None, - help="Subdevice of UHD device where appropriate") - parser.add_option("-A", "--antenna", type="string", default=None, - help="select Rx Antenna where appropriate") - parser.add_option("", "--tx-freq", type="eng_float", default=None, - help="set transmit frequency to FREQ [default=%default]", - metavar="FREQ") - parser.add_option("", "--tx-gain", type="eng_float", default=None, - help="set transmit gain in dB (default is midpoint)") - parser.add_option("-v", "--verbose", action="store_true", default=False) - - # Make a static method to call before instantiation - add_options = staticmethod(add_options) - - def _print_verbage(self): - """ - Prints information about the UHD transmitter - """ - print "\nUHD Transmitter:" - print "Args: %s" % (self._args) - print "Freq: %sHz" % (eng_notation.num_to_str(self._freq)) - print "Gain: %f dB" % (self._gain) - print "Sample Rate: %ssps" % (eng_notation.num_to_str(self._rate)) - print "Antenna: %s" % (self._ant) - print "Subdev Sec: %s" % (self._spec) - - -#-------------------------------------------------------------------# -# RECEIVER -#-------------------------------------------------------------------# - - -class uhd_receiver(uhd_interface, gr.hier_block2): - def __init__(self, args, sym_rate, sps, freq=None, gain=None, - spec=None, antenna=None, verbose=False): - gr.hier_block2.__init__(self, "uhd_receiver", - gr.io_signature(0,0,0), - gr.io_signature(1,1,gr.sizeof_gr_complex)) - - # Set up the UHD interface as a receiver - uhd_interface.__init__(self, False, args, sym_rate, sps, - freq, gain, spec, antenna) - - self.connect(self.u, self) - - if(verbose): - self._print_verbage() - - def add_options(parser): - add_freq_option(parser) - parser.add_option("-a", "--args", type="string", default="", - help="UHD device address args [default=%default]") - parser.add_option("", "--spec", type="string", default=None, - help="Subdevice of UHD device where appropriate") - parser.add_option("-A", "--antenna", type="string", default=None, - help="select Rx Antenna where appropriate") - parser.add_option("", "--rx-freq", type="eng_float", default=None, - help="set receive frequency to FREQ [default=%default]", - metavar="FREQ") - parser.add_option("", "--rx-gain", type="eng_float", default=None, - help="set receive gain in dB (default is midpoint)") - if not parser.has_option("--verbose"): - parser.add_option("-v", "--verbose", action="store_true", default=False) - - # Make a static method to call before instantiation - add_options = staticmethod(add_options) - - def _print_verbage(self): - """ - Prints information about the UHD transmitter - """ - print "\nUHD Receiver:" - print "UHD Args: %s" % (self._args) - print "Freq: %sHz" % (eng_notation.num_to_str(self._freq)) - print "Gain: %f dB" % (self._gain) - print "Sample Rate: %ssps" % (eng_notation.num_to_str(self._rate)) - print "Antenna: %s" % (self._ant) - print "Spec: %s" % (self._spec) |