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 usrp
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 def pick_subdevice(u):
35 The user didn't specify a subdevice on the command line.
36 If there's a daughterboard on A, select A.
37 If there's a daughterboard on B, select B.
40 if u.db(0, 0).dbid() >= 0: # dbid is < 0 if there's no d'board or a problem
42 if u.db(0, 0).dbid() >= 0:
47 class app_top_block(stdgui2.std_top_block):
48 def __init__(self, frame, panel, vbox, argv):
49 stdgui2.std_top_block.__init__(self, frame, panel, vbox, argv)
54 parser = OptionParser(option_class=eng_option)
55 parser.add_option("-w", "--which", type="int", default=0,
56 help="select which USRP (0, 1, ...) default is %default",
58 parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None,
59 help="select USRP Rx side A or B (default=first one with a daughterboard)")
60 parser.add_option("-A", "--antenna", default=None,
61 help="select Rx Antenna (only on RFX-series boards)")
62 parser.add_option("-d", "--decim", type="int", default=16,
63 help="set fgpa decimation rate to DECIM [default=%default]")
64 parser.add_option("-f", "--freq", type="eng_float", default=None,
65 help="set frequency to FREQ", metavar="FREQ")
66 parser.add_option("-g", "--gain", type="eng_float", default=None,
67 help="set gain in dB [default is midpoint]")
68 parser.add_option("-W", "--waterfall", action="store_true", default=False,
69 help="Enable waterfall display")
70 parser.add_option("-8", "--width-8", action="store_true", default=False,
71 help="Enable 8-bit samples across USB")
72 parser.add_option( "--no-hb", action="store_true", default=False,
73 help="don't use halfband filter in usrp")
74 parser.add_option("-S", "--oscilloscope", action="store_true", default=False,
75 help="Enable oscilloscope display")
76 parser.add_option("", "--avg-alpha", type="eng_float", default=1e-1,
77 help="Set fftsink averaging factor, [default=%default]")
78 parser.add_option("", "--ref-scale", type="eng_float", default=13490.0,
79 help="Set dBFS=0dB input value, [default=%default]")
80 parser.add_option("", "--fft-size", type="int", default=1024,
81 help="Set FFT frame size, [default=%default]");
83 (options, args) = parser.parse_args()
87 self.options = options
88 self.show_debug_info = True
91 if options.no_hb or (options.decim<8):
92 #Min decimation of this firmware is 4.
93 #contains 4 Rx paths without halfbands and 0 tx paths.
94 self.fpga_filename="std_4rx_0tx.rbf"
95 self.u = usrp.source_c(which=options.which, decim_rate=options.decim, fpga_filename=self.fpga_filename)
97 #Min decimation of standard firmware is 8.
98 #standard fpga firmware "std_2rxhb_2tx.rbf"
99 #contains 2 Rx paths with halfband filters and 2 tx paths (the default)
100 self.u = usrp.source_c(which=options.which, decim_rate=options.decim)
102 if options.rx_subdev_spec is None:
103 options.rx_subdev_spec = pick_subdevice(self.u)
104 self.u.set_mux(usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec))
109 format = self.u.make_format(width, shift)
110 print "format =", hex(format)
111 r = self.u.set_format(format)
112 print "set_format =", r
114 # determine the daughterboard subdevice we're using
115 self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec)
117 input_rate = self.u.adc_freq() / self.u.decim_rate()
119 if options.waterfall:
121 waterfallsink2.waterfall_sink_c (panel, fft_size=options.fft_size, sample_rate=input_rate)
122 elif options.oscilloscope:
123 self.scope = scopesink2.scope_sink_c(panel, sample_rate=input_rate)
125 self.scope = fftsink2.fft_sink_c (panel, fft_size=options.fft_size, sample_rate=input_rate,
126 ref_scale=options.ref_scale, ref_level=0.0, y_divs = 10,
127 avg_alpha=options.avg_alpha)
129 self.connect(self.u, self.scope)
131 self._build_gui(vbox)
136 if options.gain is None:
137 # if no gain was specified, use the mid-point in dB
138 g = self.subdev.gain_range()
139 options.gain = float(g[0]+g[1])/2
141 if options.freq is None:
142 # if no freq was specified, use the mid-point
143 r = self.subdev.freq_range()
144 options.freq = float(r[0]+r[1])/2
146 self.set_gain(options.gain)
148 if options.antenna is not None:
149 print "Selecting antenna %s" % (options.antenna,)
150 self.subdev.select_rx_antenna(options.antenna)
152 if self.show_debug_info:
153 self.myform['decim'].set_value(self.u.decim_rate())
154 self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate())
155 self.myform['dbname'].set_value(self.subdev.name())
156 self.myform['baseband'].set_value(0)
157 self.myform['ddc'].set_value(0)
159 if not(self.set_freq(options.freq)):
160 self._set_status_msg("Failed to set initial frequency")
162 def _set_status_msg(self, msg):
163 self.frame.GetStatusBar().SetStatusText(msg, 0)
165 def _build_gui(self, vbox):
167 def _form_set_freq(kv):
168 return self.set_freq(kv['freq'])
170 vbox.Add(self.scope.win, 10, wx.EXPAND)
172 # add control area at the bottom
173 self.myform = myform = form.form()
174 hbox = wx.BoxSizer(wx.HORIZONTAL)
175 hbox.Add((5,0), 0, 0)
176 myform['freq'] = form.float_field(
177 parent=self.panel, sizer=hbox, label="Center freq", weight=1,
178 callback=myform.check_input_and_call(_form_set_freq, self._set_status_msg))
180 hbox.Add((5,0), 0, 0)
181 g = self.subdev.gain_range()
182 myform['gain'] = form.slider_field(parent=self.panel, sizer=hbox, label="Gain",
184 min=int(g[0]), max=int(g[1]),
185 callback=self.set_gain)
187 hbox.Add((5,0), 0, 0)
188 vbox.Add(hbox, 0, wx.EXPAND)
190 self._build_subpanel(vbox)
192 def _build_subpanel(self, vbox_arg):
193 # build a secondary information panel (sometimes hidden)
195 # FIXME figure out how to have this be a subpanel that is always
196 # created, but has its visibility controlled by foo.Show(True/False)
198 def _form_set_decim(kv):
199 return self.set_decim(kv['decim'])
201 if not(self.show_debug_info):
208 #panel = wx.Panel(self.panel, -1)
209 #vbox = wx.BoxSizer(wx.VERTICAL)
211 hbox = wx.BoxSizer(wx.HORIZONTAL)
214 myform['decim'] = form.int_field(
215 parent=panel, sizer=hbox, label="Decim",
216 callback=myform.check_input_and_call(_form_set_decim, self._set_status_msg))
219 myform['fs@usb'] = form.static_float_field(
220 parent=panel, sizer=hbox, label="Fs@USB")
223 myform['dbname'] = form.static_text_field(
224 parent=panel, sizer=hbox)
227 myform['baseband'] = form.static_float_field(
228 parent=panel, sizer=hbox, label="Analog BB")
231 myform['ddc'] = form.static_float_field(
232 parent=panel, sizer=hbox, label="DDC")
235 vbox.Add(hbox, 0, wx.EXPAND)
238 def set_freq(self, target_freq):
240 Set the center frequency we're interested in.
242 @param target_freq: frequency in Hz
245 Tuning is a two step process. First we ask the front-end to
246 tune as close to the desired frequency as it can. Then we use
247 the result of that operation and our target_frequency to
248 determine the value for the digital down converter.
250 r = self.u.tune(0, self.subdev, target_freq)
253 self.myform['freq'].set_value(target_freq) # update displayed value
254 if self.show_debug_info:
255 self.myform['baseband'].set_value(r.baseband_freq)
256 self.myform['ddc'].set_value(r.dxc_freq)
257 if not self.options.oscilloscope:
258 self.scope.win.set_baseband_freq(target_freq)
263 def set_gain(self, gain):
264 self.myform['gain'].set_value(gain) # update displayed value
265 self.subdev.set_gain(gain)
267 def set_decim(self, decim):
268 ok = self.u.set_decim_rate(decim)
270 print "set_decim failed"
271 input_rate = self.u.adc_freq() / self.u.decim_rate()
272 self.scope.set_sample_rate(input_rate)
273 if self.show_debug_info: # update displayed values
274 self.myform['decim'].set_value(self.u.decim_rate())
275 self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate())
278 def _setup_events(self):
279 if not self.options.waterfall and not self.options.oscilloscope:
280 self.scope.win.Bind(wx.EVT_LEFT_DCLICK, self.evt_left_dclick)
282 def evt_left_dclick(self, event):
283 (ux, uy) = self.scope.win.GetXY(event)
285 # Re-center on maximum power
286 points = self.scope.win._points
287 if self.scope.win.peak_hold:
288 if self.scope.win.peak_vals is not None:
289 ind = numpy.argmax(self.scope.win.peak_vals)
291 ind = int(points.shape()[0]/2)
293 ind = numpy.argmax(points[:,1])
294 (freq, pwr) = points[ind]
295 target_freq = freq/self.scope.win._scale_factor
297 self.set_freq(target_freq)
299 # Re-center on clicked frequency
300 target_freq = ux/self.scope.win._scale_factor
301 self.set_freq(target_freq)
305 app = stdgui2.stdapp(app_top_block, "USRP FFT", nstatus=1)
308 if __name__ == '__main__':