3 # Copyright 2004,2005,2007,2008 Free Software Foundation, Inc.
5 # This file is part of GNU Radio
7 # GNU Radio is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3, or (at your option)
12 # GNU Radio is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with GNU Radio; see the file COPYING. If not, write to
19 # the Free Software Foundation, Inc., 51 Franklin Street,
20 # Boston, MA 02110-1301, USA.
23 from gnuradio import gr, gru
24 from gnuradio import usrp2
25 from gnuradio import eng_notation
26 from gnuradio.eng_option import eng_option
27 from gnuradio.wxgui import stdgui2, fftsink2, waterfallsink2, scopesink2, form, slider
28 from optparse import OptionParser
33 class app_top_block(stdgui2.std_top_block):
34 def __init__(self, frame, panel, vbox, argv):
35 stdgui2.std_top_block.__init__(self, frame, panel, vbox, argv)
40 parser = OptionParser(option_class=eng_option)
41 parser.add_option("-e", "--interface", type="string", default="eth0",
42 help="select Ethernet interface, default is eth0")
43 parser.add_option("-m", "--mac-addr", type="string", default="",
44 help="select USRP by MAC address, default is auto-select")
45 #parser.add_option("-A", "--antenna", default=None,
46 # help="select Rx Antenna (only on RFX-series boards)")
47 parser.add_option("-d", "--decim", type="int", default=16,
48 help="set fgpa decimation rate to DECIM [default=%default]")
49 parser.add_option("-f", "--freq", type="eng_float", default=None,
50 help="set frequency to FREQ", metavar="FREQ")
51 parser.add_option("-g", "--gain", type="eng_float", default=None,
52 help="set gain in dB (default is midpoint)")
53 parser.add_option("-W", "--waterfall", action="store_true", default=False,
54 help="Enable waterfall display")
55 parser.add_option("-S", "--oscilloscope", action="store_true", default=False,
56 help="Enable oscilloscope display")
57 parser.add_option("", "--avg-alpha", type="eng_float", default=1e-1,
58 help="Set fftsink averaging factor, default=[%default]")
59 parser.add_option("", "--ref-scale", type="eng_float", default=1.0,
60 help="Set dBFS=0dB input value, default=[%default]")
61 parser.add_option("--fft-size", type="int", default=1024,
62 help="Set number of FFT bins [default=%default]")
63 (options, args) = parser.parse_args()
67 self.options = options
68 self.show_debug_info = True
70 self.u = usrp2.source_32fc(options.interface, options.mac_addr)
71 self.u.set_decim(options.decim)
73 input_rate = self.u.adc_rate() / self.u.decim()
77 waterfallsink2.waterfall_sink_c (panel, fft_size=1024, sample_rate=input_rate)
78 elif options.oscilloscope:
79 self.scope = scopesink2.scope_sink_c(panel, sample_rate=input_rate)
81 self.scope = fftsink2.fft_sink_c (panel,
82 fft_size=options.fft_size,
83 sample_rate=input_rate,
84 ref_scale=options.ref_scale,
87 avg_alpha=options.avg_alpha)
89 self.connect(self.u, self.scope)
96 if options.gain is None:
97 # if no gain was specified, use the mid-point in dB
98 g = self.u.gain_range()
99 options.gain = float(g[0]+g[1])/2
101 if options.freq is None:
102 # if no freq was specified, use the mid-point
103 r = self.u.freq_range()
104 options.freq = float(r[0]+r[1])/2
106 self.set_gain(options.gain)
108 #if options.antenna is not None:
109 # print "Selecting antenna %s" % (options.antenna,)
110 # self.subdev.select_rx_antenna(options.antenna)
112 if self.show_debug_info:
113 self.myform['decim'].set_value(self.u.decim())
114 self.myform['fs@gbe'].set_value(input_rate)
115 self.myform['dbname'].set_value("0x%04X" % (self.u.daughterboard_id(),)) # FIXME: add text name
116 self.myform['baseband'].set_value(0)
117 self.myform['ddc'].set_value(0)
119 if not(self.set_freq(options.freq)):
120 self._set_status_msg("Failed to set initial frequency")
122 def _set_status_msg(self, msg):
123 self.frame.GetStatusBar().SetStatusText(msg, 0)
125 def _build_gui(self, vbox):
127 def _form_set_freq(kv):
128 return self.set_freq(kv['freq'])
130 vbox.Add(self.scope.win, 10, wx.EXPAND)
132 # add control area at the bottom
133 self.myform = myform = form.form()
134 hbox = wx.BoxSizer(wx.HORIZONTAL)
135 hbox.Add((5,0), 0, 0)
136 myform['freq'] = form.float_field(
137 parent=self.panel, sizer=hbox, label="Center freq", weight=1,
138 callback=myform.check_input_and_call(_form_set_freq, self._set_status_msg))
140 hbox.Add((5,0), 0, 0)
141 g = self.u.gain_range()
143 # some configurations don't have gain control
145 myform['gain'] = form.slider_field(parent=self.panel, sizer=hbox, label="Gain",
147 min=int(g[0]), max=int(g[1]),
148 callback=self.set_gain)
150 hbox.Add((5,0), 0, 0)
151 vbox.Add(hbox, 0, wx.EXPAND)
153 self._build_subpanel(vbox)
155 def _build_subpanel(self, vbox_arg):
156 # build a secondary information panel (sometimes hidden)
158 # FIXME figure out how to have this be a subpanel that is always
159 # created, but has its visibility controlled by foo.Show(True/False)
161 def _form_set_decim(kv):
162 return self.set_decim(kv['decim'])
164 if not(self.show_debug_info):
171 #panel = wx.Panel(self.panel, -1)
172 #vbox = wx.BoxSizer(wx.VERTICAL)
174 hbox = wx.BoxSizer(wx.HORIZONTAL)
177 myform['decim'] = form.int_field(
178 parent=panel, sizer=hbox, label="Decim",
179 callback=myform.check_input_and_call(_form_set_decim, self._set_status_msg))
182 myform['fs@gbe'] = form.static_float_field(
183 parent=panel, sizer=hbox, label="Fs@GbE")
186 myform['dbname'] = form.static_text_field(
187 parent=panel, sizer=hbox)
190 myform['baseband'] = form.static_float_field(
191 parent=panel, sizer=hbox, label="Analog BB")
194 myform['ddc'] = form.static_float_field(
195 parent=panel, sizer=hbox, label="DDC")
198 vbox.Add(hbox, 0, wx.EXPAND)
201 def set_freq(self, target_freq):
203 Set the center frequency we're interested in.
205 @param target_freq: frequency in Hz
208 Tuning is a two step process. First we ask the front-end to
209 tune as close to the desired frequency as it can. Then we use
210 the result of that operation and our target_frequency to
211 determine the value for the digital down converter.
213 r = self.u.set_center_freq(target_freq)
216 self.myform['freq'].set_value(target_freq) # update displayed value
217 if self.show_debug_info:
218 self.myform['baseband'].set_value(r.baseband_freq)
219 self.myform['ddc'].set_value(r.dxc_freq)
220 if not self.options.oscilloscope:
221 self.scope.win.set_baseband_freq(target_freq)
226 def set_gain(self, gain):
227 if self.myform.has_key('gain'):
228 self.myform['gain'].set_value(gain) # update displayed value
229 self.u.set_gain(gain)
231 def set_decim(self, decim):
232 ok = self.u.set_decim(decim)
234 print "set_decim failed"
235 input_rate = self.u.adc_rate() / self.u.decim()
236 self.scope.set_sample_rate(input_rate)
237 if self.show_debug_info: # update displayed values
238 self.myform['decim'].set_value(self.u.decim())
239 self.myform['fs@gbe'].set_value(input_rate)
242 def _setup_events(self):
243 if not self.options.waterfall and not self.options.oscilloscope:
244 self.scope.win.Bind(wx.EVT_LEFT_DCLICK, self.evt_left_dclick)
246 def evt_left_dclick(self, event):
247 (ux, uy) = self.scope.win.GetXY(event)
249 # Re-center on maximum power
250 points = self.scope.win._points
251 if self.scope.win.peak_hold:
252 if self.scope.win.peak_vals is not None:
253 ind = numpy.argmax(self.scope.win.peak_vals)
255 ind = int(points.shape()[0]/2)
257 ind = numpy.argmax(points[:,1])
258 (freq, pwr) = points[ind]
259 target_freq = freq/self.scope.win._scale_factor
261 self.set_freq(target_freq)
263 # Re-center on clicked frequency
264 target_freq = ux/self.scope.win._scale_factor
265 self.set_freq(target_freq)
269 app = stdgui2.stdapp(app_top_block, "USRP2 FFT", nstatus=1)
272 if __name__ == '__main__':