3 # Copyright 2004,2005,2007 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[1][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("-S", "--oscilloscope", action="store_true", default=False,
73 help="Enable oscilloscope display")
74 (options, args) = parser.parse_args()
78 self.options = options
79 self.show_debug_info = True
83 self.u = usrp.source_c(which=options.which, decim_rate=options.decim)
84 if options.rx_subdev_spec is None:
85 options.rx_subdev_spec = pick_subdevice(self.u)
86 self.u.set_mux(usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec))
91 format = self.u.make_format(width, shift)
92 print "format =", hex(format)
93 r = self.u.set_format(format)
94 print "set_format =", r
96 # determine the daughterboard subdevice we're using
97 self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec)
99 input_rate = self.u.adc_freq() / self.u.decim_rate()
101 if options.waterfall:
103 waterfallsink2.waterfall_sink_c (panel, fft_size=1024, sample_rate=input_rate)
104 elif options.oscilloscope:
105 self.scope = scopesink2.scope_sink_c(panel, sample_rate=input_rate)
107 self.scope = fftsink2.fft_sink_c (panel, fft_size=1024, sample_rate=input_rate)
109 self.connect(self.u, self.scope)
111 self._build_gui(vbox)
116 if options.gain is None:
117 # if no gain was specified, use the mid-point in dB
118 g = self.subdev.gain_range()
119 options.gain = float(g[0]+g[1])/2
121 if options.freq is None:
122 # if no freq was specified, use the mid-point
123 r = self.subdev.freq_range()
124 options.freq = float(r[0]+r[1])/2
126 self.set_gain(options.gain)
128 if options.antenna is not None:
129 print "Selecting antenna %s" % (options.antenna,)
130 self.subdev.select_rx_antenna(options.antenna)
132 if self.show_debug_info:
133 self.myform['decim'].set_value(self.u.decim_rate())
134 self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate())
135 self.myform['dbname'].set_value(self.subdev.name())
136 self.myform['baseband'].set_value(0)
137 self.myform['ddc'].set_value(0)
139 if not(self.set_freq(options.freq)):
140 self._set_status_msg("Failed to set initial frequency")
142 def _set_status_msg(self, msg):
143 self.frame.GetStatusBar().SetStatusText(msg, 0)
145 def _build_gui(self, vbox):
147 def _form_set_freq(kv):
148 return self.set_freq(kv['freq'])
150 vbox.Add(self.scope.win, 10, wx.EXPAND)
152 # add control area at the bottom
153 self.myform = myform = form.form()
154 hbox = wx.BoxSizer(wx.HORIZONTAL)
155 hbox.Add((5,0), 0, 0)
156 myform['freq'] = form.float_field(
157 parent=self.panel, sizer=hbox, label="Center freq", weight=1,
158 callback=myform.check_input_and_call(_form_set_freq, self._set_status_msg))
160 hbox.Add((5,0), 0, 0)
161 g = self.subdev.gain_range()
162 myform['gain'] = form.slider_field(parent=self.panel, sizer=hbox, label="Gain",
164 min=int(g[0]), max=int(g[1]),
165 callback=self.set_gain)
167 hbox.Add((5,0), 0, 0)
168 vbox.Add(hbox, 0, wx.EXPAND)
170 self._build_subpanel(vbox)
172 def _build_subpanel(self, vbox_arg):
173 # build a secondary information panel (sometimes hidden)
175 # FIXME figure out how to have this be a subpanel that is always
176 # created, but has its visibility controlled by foo.Show(True/False)
178 def _form_set_decim(kv):
179 return self.set_decim(kv['decim'])
181 if not(self.show_debug_info):
188 #panel = wx.Panel(self.panel, -1)
189 #vbox = wx.BoxSizer(wx.VERTICAL)
191 hbox = wx.BoxSizer(wx.HORIZONTAL)
194 myform['decim'] = form.int_field(
195 parent=panel, sizer=hbox, label="Decim",
196 callback=myform.check_input_and_call(_form_set_decim, self._set_status_msg))
199 myform['fs@usb'] = form.static_float_field(
200 parent=panel, sizer=hbox, label="Fs@USB")
203 myform['dbname'] = form.static_text_field(
204 parent=panel, sizer=hbox)
207 myform['baseband'] = form.static_float_field(
208 parent=panel, sizer=hbox, label="Analog BB")
211 myform['ddc'] = form.static_float_field(
212 parent=panel, sizer=hbox, label="DDC")
215 vbox.Add(hbox, 0, wx.EXPAND)
218 def set_freq(self, target_freq):
220 Set the center frequency we're interested in.
222 @param target_freq: frequency in Hz
225 Tuning is a two step process. First we ask the front-end to
226 tune as close to the desired frequency as it can. Then we use
227 the result of that operation and our target_frequency to
228 determine the value for the digital down converter.
230 r = self.u.tune(0, self.subdev, target_freq)
233 self.myform['freq'].set_value(target_freq) # update displayed value
234 if self.show_debug_info:
235 self.myform['baseband'].set_value(r.baseband_freq)
236 self.myform['ddc'].set_value(r.dxc_freq)
237 if not self.options.waterfall and not self.options.oscilloscope:
238 self.scope.win.set_baseband_freq(target_freq)
243 def set_gain(self, gain):
244 self.myform['gain'].set_value(gain) # update displayed value
245 self.subdev.set_gain(gain)
247 def set_decim(self, decim):
248 ok = self.u.set_decim_rate(decim)
250 print "set_decim failed"
251 input_rate = self.u.adc_freq() / self.u.decim_rate()
252 self.scope.set_sample_rate(input_rate)
253 if self.show_debug_info: # update displayed values
254 self.myform['decim'].set_value(self.u.decim_rate())
255 self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate())
258 def _setup_events(self):
259 if not self.options.waterfall and not self.options.oscilloscope:
260 self.scope.win.Bind(wx.EVT_LEFT_DCLICK, self.evt_left_dclick)
262 def evt_left_dclick(self, event):
263 (ux, uy) = self.scope.win.GetXY(event)
265 # Re-center on maximum power
266 points = self.scope.win._points
267 if self.scope.win.peak_hold:
268 if self.scope.win.peak_vals is not None:
269 ind = numpy.argmax(self.scope.win.peak_vals)
271 ind = int(points.shape()[0]/2)
273 ind = numpy.argmax(points[:,1])
274 (freq, pwr) = points[ind]
275 target_freq = freq/self.scope.win._scale_factor
277 self.set_freq(target_freq)
279 # Re-center on clicked frequency
280 target_freq = ux/self.scope.win._scale_factor
281 self.set_freq(target_freq)
285 app = stdgui2.stdapp(app_top_block, "USRP FFT", nstatus=1)
288 if __name__ == '__main__':