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# Copyright 2004,2005,2007,2008 Free Software Foundation, Inc.
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# This file is part of GNU Radio
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# GNU Radio is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# GNU Radio is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with GNU Radio; see the file COPYING. If not, write to
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# the Free Software Foundation, Inc., 51 Franklin Street,
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# Boston, MA 02110-1301, USA.
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from gnuradio import gr, gru
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from gnuradio import usrp2
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from gnuradio import eng_notation
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from gnuradio.eng_option import eng_option
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from gnuradio.wxgui import stdgui2, fftsink2, waterfallsink2, scopesink2, form, slider
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from optparse import OptionParser
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class app_top_block(stdgui2.std_top_block):
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def __init__(self, frame, panel, vbox, argv):
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stdgui2.std_top_block.__init__(self, frame, panel, vbox, argv)
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parser = OptionParser(option_class=eng_option)
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parser.add_option("-e", "--interface", type="string", default="eth0",
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help="select Ethernet interface, default is eth0")
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parser.add_option("-m", "--mac-addr", type="string", default="",
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help="select USRP by MAC address, default is auto-select")
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#parser.add_option("-A", "--antenna", default=None,
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# help="select Rx Antenna (only on RFX-series boards)")
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parser.add_option("-d", "--decim", type="int", default=16,
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help="set fgpa decimation rate to DECIM [default=%default]")
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parser.add_option("-f", "--freq", type="eng_float", default=None,
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help="set frequency to FREQ", metavar="FREQ")
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parser.add_option("-g", "--gain", type="eng_float", default=None,
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help="set gain in dB (default is midpoint)")
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parser.add_option("-W", "--waterfall", action="store_true", default=False,
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help="Enable waterfall display")
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parser.add_option("-S", "--oscilloscope", action="store_true", default=False,
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help="Enable oscilloscope display")
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parser.add_option("", "--avg-alpha", type="eng_float", default=1e-1,
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help="Set fftsink averaging factor, default=[%default]")
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parser.add_option("", "--ref-scale", type="eng_float", default=1.0,
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help="Set dBFS=0dB input value, default=[%default]")
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parser.add_option("--fft-size", type="int", default=1024,
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help="Set number of FFT bins [default=%default]")
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(options, args) = parser.parse_args()
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self.options = options
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self.show_debug_info = True
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self.u = usrp2.source_32fc(options.interface, options.mac_addr)
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self.u.set_decim(options.decim)
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input_rate = self.u.adc_rate() / self.u.decim()
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waterfallsink2.waterfall_sink_c (panel, fft_size=1024, sample_rate=input_rate)
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elif options.oscilloscope:
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self.scope = scopesink2.scope_sink_c(panel, sample_rate=input_rate)
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self.scope = fftsink2.fft_sink_c (panel,
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fft_size=options.fft_size,
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sample_rate=input_rate,
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ref_scale=options.ref_scale,
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avg_alpha=options.avg_alpha)
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self.connect(self.u, self.scope)
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if options.gain is None:
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# if no gain was specified, use the mid-point in dB
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g = self.u.gain_range()
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options.gain = float(g[0]+g[1])/2
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if options.freq is None:
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# if no freq was specified, use the mid-point
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r = self.u.freq_range()
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options.freq = float(r[0]+r[1])/2
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self.set_gain(options.gain)
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#if options.antenna is not None:
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# print "Selecting antenna %s" % (options.antenna,)
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# self.subdev.select_rx_antenna(options.antenna)
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if self.show_debug_info:
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self.myform['decim'].set_value(self.u.decim())
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self.myform['fs@gbe'].set_value(input_rate)
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self.myform['dbname'].set_value("0x%04X" % (self.u.daughterboard_id(),)) # FIXME: add text name
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self.myform['baseband'].set_value(0)
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self.myform['ddc'].set_value(0)
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if not(self.set_freq(options.freq)):
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self._set_status_msg("Failed to set initial frequency")
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def _set_status_msg(self, msg):
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self.frame.GetStatusBar().SetStatusText(msg, 0)
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def _build_gui(self, vbox):
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def _form_set_freq(kv):
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return self.set_freq(kv['freq'])
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vbox.Add(self.scope.win, 10, wx.EXPAND)
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# add control area at the bottom
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self.myform = myform = form.form()
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hbox = wx.BoxSizer(wx.HORIZONTAL)
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hbox.Add((5,0), 0, 0)
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myform['freq'] = form.float_field(
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parent=self.panel, sizer=hbox, label="Center freq", weight=1,
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callback=myform.check_input_and_call(_form_set_freq, self._set_status_msg))
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hbox.Add((5,0), 0, 0)
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g = self.u.gain_range()
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# some configurations don't have gain control
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myform['gain'] = form.slider_field(parent=self.panel, sizer=hbox, label="Gain",
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min=int(g[0]), max=int(g[1]),
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callback=self.set_gain)
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hbox.Add((5,0), 0, 0)
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vbox.Add(hbox, 0, wx.EXPAND)
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self._build_subpanel(vbox)
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def _build_subpanel(self, vbox_arg):
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# build a secondary information panel (sometimes hidden)
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# FIXME figure out how to have this be a subpanel that is always
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# created, but has its visibility controlled by foo.Show(True/False)
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def _form_set_decim(kv):
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return self.set_decim(kv['decim'])
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if not(self.show_debug_info):
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#panel = wx.Panel(self.panel, -1)
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#vbox = wx.BoxSizer(wx.VERTICAL)
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hbox = wx.BoxSizer(wx.HORIZONTAL)
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myform['decim'] = form.int_field(
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parent=panel, sizer=hbox, label="Decim",
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callback=myform.check_input_and_call(_form_set_decim, self._set_status_msg))
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myform['fs@gbe'] = form.static_float_field(
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parent=panel, sizer=hbox, label="Fs@GbE")
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myform['dbname'] = form.static_text_field(
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parent=panel, sizer=hbox)
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myform['baseband'] = form.static_float_field(
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parent=panel, sizer=hbox, label="Analog BB")
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myform['ddc'] = form.static_float_field(
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parent=panel, sizer=hbox, label="DDC")
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vbox.Add(hbox, 0, wx.EXPAND)
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def set_freq(self, target_freq):
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Set the center frequency we're interested in.
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@param target_freq: frequency in Hz
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Tuning is a two step process. First we ask the front-end to
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tune as close to the desired frequency as it can. Then we use
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the result of that operation and our target_frequency to
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determine the value for the digital down converter.
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r = self.u.set_center_freq(target_freq)
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self.myform['freq'].set_value(target_freq) # update displayed value
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if self.show_debug_info:
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self.myform['baseband'].set_value(r.baseband_freq)
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self.myform['ddc'].set_value(r.dxc_freq)
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if not self.options.oscilloscope:
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self.scope.win.set_baseband_freq(target_freq)
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def set_gain(self, gain):
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if self.myform.has_key('gain'):
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self.myform['gain'].set_value(gain) # update displayed value
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self.u.set_gain(gain)
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def set_decim(self, decim):
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ok = self.u.set_decim(decim)
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print "set_decim failed"
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input_rate = self.u.adc_rate() / self.u.decim()
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self.scope.set_sample_rate(input_rate)
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if self.show_debug_info: # update displayed values
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self.myform['decim'].set_value(self.u.decim())
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self.myform['fs@gbe'].set_value(input_rate)
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def _setup_events(self):
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if not self.options.waterfall and not self.options.oscilloscope:
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self.scope.win.Bind(wx.EVT_LEFT_DCLICK, self.evt_left_dclick)
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def evt_left_dclick(self, event):
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(ux, uy) = self.scope.win.GetXY(event)
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# Re-center on maximum power
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points = self.scope.win._points
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if self.scope.win.peak_hold:
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if self.scope.win.peak_vals is not None:
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ind = numpy.argmax(self.scope.win.peak_vals)
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ind = int(points.shape()[0]/2)
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ind = numpy.argmax(points[:,1])
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(freq, pwr) = points[ind]
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target_freq = freq/self.scope.win._scale_factor
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self.set_freq(target_freq)
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# Re-center on clicked frequency
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target_freq = ux/self.scope.win._scale_factor
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self.set_freq(target_freq)
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app = stdgui2.stdapp(app_top_block, "USRP2 FFT", nstatus=1)
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if __name__ == '__main__':
added
removed
gr-utils/src/python/usrp2_fft.py
