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("-R", "--rx-subdev-spec", type="subdev", default=None,
56 help="select USRP Rx side A or B (default=first one with a daughterboard)")
57 parser.add_option("-d", "--decim", type="int", default=16,
58 help="set fgpa decimation rate to DECIM [default=%default]")
59 parser.add_option("-f", "--freq", type="eng_float", default=None,
60 help="set frequency to FREQ", metavar="FREQ")
61 parser.add_option("-g", "--gain", type="eng_float", default=None,
62 help="set gain in dB (default is midpoint)")
63 parser.add_option("-W", "--waterfall", action="store_true", default=False,
64 help="Enable waterfall display")
65 parser.add_option("-8", "--width-8", action="store_true", default=False,
66 help="Enable 8-bit samples across USB")
67 parser.add_option("-S", "--oscilloscope", action="store_true", default=False,
68 help="Enable oscilloscope display")
69 (options, args) = parser.parse_args()
74 self.show_debug_info = True
76 self.u = usrp.source_c(decim_rate=options.decim)
77 if options.rx_subdev_spec is None:
78 options.rx_subdev_spec = pick_subdevice(self.u)
79 self.u.set_mux(usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec))
84 format = self.u.make_format(width, shift)
85 print "format =", hex(format)
86 r = self.u.set_format(format)
87 print "set_format =", r
89 # determine the daughterboard subdevice we're using
90 self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec)
92 input_rate = self.u.adc_freq() / self.u.decim_rate()
96 self.scope = waterfallsink2.waterfall_sink_c (panel, fft_size=1024, sample_rate=input_rate)
97 elif options.oscilloscope:
98 self.scope = scopesink2.scope_sink_c(panel, sample_rate=input_rate)
100 self.scope = fftsink2.fft_sink_c (panel, fft_size=1024, sample_rate=input_rate)
102 self.connect(self.u, self.scope)
104 self._build_gui(vbox)
108 if options.gain is None:
109 # if no gain was specified, use the mid-point in dB
110 g = self.subdev.gain_range()
111 options.gain = float(g[0]+g[1])/2
113 if options.freq is None:
114 # if no freq was specified, use the mid-point
115 r = self.subdev.freq_range()
116 options.freq = float(r[0]+r[1])/2
118 self.set_gain(options.gain)
120 if self.show_debug_info:
121 self.myform['decim'].set_value(self.u.decim_rate())
122 self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate())
123 self.myform['dbname'].set_value(self.subdev.name())
124 self.myform['baseband'].set_value(0)
125 self.myform['ddc'].set_value(0)
127 if not(self.set_freq(options.freq)):
128 self._set_status_msg("Failed to set initial frequency")
130 def _set_status_msg(self, msg):
131 self.frame.GetStatusBar().SetStatusText(msg, 0)
133 def _build_gui(self, vbox):
135 def _form_set_freq(kv):
136 return self.set_freq(kv['freq'])
138 vbox.Add(self.scope.win, 10, wx.EXPAND)
140 # add control area at the bottom
141 self.myform = myform = form.form()
142 hbox = wx.BoxSizer(wx.HORIZONTAL)
143 hbox.Add((5,0), 0, 0)
144 myform['freq'] = form.float_field(
145 parent=self.panel, sizer=hbox, label="Center freq", weight=1,
146 callback=myform.check_input_and_call(_form_set_freq, self._set_status_msg))
148 hbox.Add((5,0), 0, 0)
149 g = self.subdev.gain_range()
150 myform['gain'] = form.slider_field(parent=self.panel, sizer=hbox, label="Gain",
152 min=int(g[0]), max=int(g[1]),
153 callback=self.set_gain)
155 hbox.Add((5,0), 0, 0)
156 vbox.Add(hbox, 0, wx.EXPAND)
158 self._build_subpanel(vbox)
160 def _build_subpanel(self, vbox_arg):
161 # build a secondary information panel (sometimes hidden)
163 # FIXME figure out how to have this be a subpanel that is always
164 # created, but has its visibility controlled by foo.Show(True/False)
166 def _form_set_decim(kv):
167 return self.set_decim(kv['decim'])
169 if not(self.show_debug_info):
176 #panel = wx.Panel(self.panel, -1)
177 #vbox = wx.BoxSizer(wx.VERTICAL)
179 hbox = wx.BoxSizer(wx.HORIZONTAL)
182 myform['decim'] = form.int_field(
183 parent=panel, sizer=hbox, label="Decim",
184 callback=myform.check_input_and_call(_form_set_decim, self._set_status_msg))
187 myform['fs@usb'] = form.static_float_field(
188 parent=panel, sizer=hbox, label="Fs@USB")
191 myform['dbname'] = form.static_text_field(
192 parent=panel, sizer=hbox)
195 myform['baseband'] = form.static_float_field(
196 parent=panel, sizer=hbox, label="Analog BB")
199 myform['ddc'] = form.static_float_field(
200 parent=panel, sizer=hbox, label="DDC")
203 vbox.Add(hbox, 0, wx.EXPAND)
206 def set_freq(self, target_freq):
208 Set the center frequency we're interested in.
210 @param target_freq: frequency in Hz
213 Tuning is a two step process. First we ask the front-end to
214 tune as close to the desired frequency as it can. Then we use
215 the result of that operation and our target_frequency to
216 determine the value for the digital down converter.
218 r = self.u.tune(0, self.subdev, target_freq)
221 self.myform['freq'].set_value(target_freq) # update displayed value
222 if self.show_debug_info:
223 self.myform['baseband'].set_value(r.baseband_freq)
224 self.myform['ddc'].set_value(r.dxc_freq)
229 def set_gain(self, gain):
230 self.myform['gain'].set_value(gain) # update displayed value
231 self.subdev.set_gain(gain)
233 def set_decim(self, decim):
234 ok = self.u.set_decim_rate(decim)
236 print "set_decim failed"
237 input_rate = self.u.adc_freq() / self.u.decim_rate()
238 self.scope.set_sample_rate(input_rate)
239 if self.show_debug_info: # update displayed values
240 self.myform['decim'].set_value(self.u.decim_rate())
241 self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate())
245 app = stdgui2.stdapp(app_top_block, "USRP FFT", nstatus=1)
248 if __name__ == '__main__':