diff options
Diffstat (limited to 'gr-pager/apps/usrp_flex')
| -rwxr-xr-x | gr-pager/apps/usrp_flex | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/gr-pager/apps/usrp_flex b/gr-pager/apps/usrp_flex deleted file mode 100755 index 94a13e51b4..0000000000 --- a/gr-pager/apps/usrp_flex +++ /dev/null @@ -1,164 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2006,2007,2009,2011 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, uhd, eng_notation, pager -from gnuradio import filter -from gnuradio.filter import optfir -from gnuradio import blocks -from gnuradio.eng_option import eng_option -from optparse import OptionParser -import time, os, sys - -class app_top_block(gr.top_block): - def __init__(self, options, queue): - gr.top_block.__init__(self, "usrp_flex") - self.options = options - self.offset = 0.0 - self.adj_time = time.time() - self.verbose = options.verbose - - if options.from_file is None: - # Set up USRP source - self.u = uhd.usrp_source(device_addr=options.address, stream_args=uhd.stream_args('fc32')) - - # Grab 250 KHz of spectrum - # (A UHD facility to get sample rate range and granularity would be useful) - self.u.set_samp_rate(250e3) - rate = self.u.get_samp_rate() - if rate != 250e3: - print "Unable to set required sample rate of 250 Ksps (got %f)" % rate - sys.exit(1) - - # Tune daughterboard - r = self.u.set_center_freq(options.freq+options.calibration, 0) - if not r: - 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) - - # if no gain was specified, use the mid-point in dB - if options.rx_gain is None: - grange = self.u.get_gain_range() - options.rx_gain = float(grange.start()+grange.stop())/2.0 - print "\nNo gain specified." - print "Setting gain to %f (from [%f, %f])" % \ - (options.rx_gain, grange.start(), grange.stop()) - - self.u.set_gain(options.rx_gain, 0) - - else: - # Use supplied file as source of samples - self.u = blocks.file_source(gr.sizeof_gr_complex, options.from_file) - if options.verbose: - print "Reading samples from", options.from_file - - if options.log and not options.from_file: - usrp_sink = blocks.file_sink(gr.sizeof_gr_complex, 'usrp.dat') - self.connect(self.u, usrp_sink) - - # Set up 22KHz-wide bandpass about center frequency. Decimate by 10 - # to get channel rate of 25Ksps - taps = optfir.low_pass(1.0, # Filter gain - 250e3, # Sample rate - 11000, # One-sided modulation bandwidth - 12500, # One-sided channel bandwidth - 0.1, # Passband ripple - 60) # Stopband attenuation - - if options.verbose: - print "Channel filter has", len(taps), "taps." - - self.chan = filter.freq_xlating_fir_filter_ccf(10, # Decimation rate - taps, # Filter taps - 0.0, # Offset frequency - 250e3) # Sample rate - - if options.log: - chan_sink = blocks.file_sink(gr.sizeof_gr_complex, 'chan.dat') - self.connect(self.chan, chan_sink) - - # FLEX protocol demodulator - self.flex = pager.flex_demod(queue, options.freq, options.verbose, options.log) - - self.connect(self.u, self.chan, self.flex) - - def freq_offset(self): - return self.flex.dc_offset()*1600 - - def adjust_freq(self): - if time.time() - self.adj_time > 1.6: # Only do it once per FLEX frame - self.adj_time = time.time() - self.offset -= self.freq_offset() - self.chan.set_center_freq(self.offset) - if self.verbose: - print "Channel frequency offset (Hz):", int(self.offset) - - -def get_options(): - parser = OptionParser(option_class=eng_option) - - parser.add_option('-f', '--freq', type="eng_float", default=None, - help="Set receive frequency to FREQ [default=%default]", - metavar="FREQ") - parser.add_option("-a", "--address", type="string", default="addr=192.168.10.2", - help="Address of UHD device, [default=%default]") - parser.add_option("-A", "--antenna", type="string", default=None, - help="select Rx Antenna where appropriate") - parser.add_option("", "--rx-gain", type="eng_float", default=None, - help="set receive gain in dB (default is midpoint)") - parser.add_option("-c", "--calibration", type="eng_float", default=0.0, - help="set frequency offset to Hz", metavar="Hz") - parser.add_option("-v", "--verbose", action="store_true", default=False) - parser.add_option("-l", "--log", action="store_true", default=False, - help="log flowgraph to files (LOTS of data)") - parser.add_option("-F", "--from-file", default=None, - help="read samples from file instead of USRP") - - (options, args) = parser.parse_args() - - if len(args) > 0: - print "Run 'usrp_flex.py -h' for options." - sys.exit(1) - - if (options.freq is None): - sys.stderr.write("You must specify -f FREQ or --freq FREQ\n") - sys.exit(1) - - return (options, args) - -if __name__ == "__main__": - - (options, args) = get_options() - - # Flow graph emits pages into message queue - queue = gr.msg_queue() - tb = app_top_block(options, queue) - runner = pager.queue_runner(queue) - - try: - tb.run() - except KeyboardInterrupt: - pass - - runner.end() - |