3 # Copyright 2004,2005 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 stdgui, fftsink, waterfallsink, scopesink, 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_flow_graph(stdgui.gui_flow_graph):
48 def __init__(self, frame, panel, vbox, argv):
49 stdgui.gui_flow_graph.__init__(self)
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()
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 waterfallsink.waterfall_sink_c (self, panel, fft_size=1024, sample_rate=input_rate)
104 elif options.oscilloscope:
105 self.scope = scopesink.scope_sink_c(self, panel, sample_rate=input_rate)
107 self.scope = fftsink.fft_sink_c (self, panel, fft_size=1024, sample_rate=input_rate)
109 self.connect(self.u, self.scope)
111 self._build_gui(vbox)
115 if options.gain is None:
116 # if no gain was specified, use the mid-point in dB
117 g = self.subdev.gain_range()
118 options.gain = float(g[0]+g[1])/2
120 if options.freq is None:
121 # if no freq was specified, use the mid-point
122 r = self.subdev.freq_range()
123 options.freq = float(r[0]+r[1])/2
125 self.set_gain(options.gain)
127 if options.antenna is not None:
128 print "Selecting antenna %s" % (options.antenna,)
129 self.subdev.select_rx_antenna(options.antenna)
131 if self.show_debug_info:
132 self.myform['decim'].set_value(self.u.decim_rate())
133 self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate())
134 self.myform['dbname'].set_value(self.subdev.name())
135 self.myform['baseband'].set_value(0)
136 self.myform['ddc'].set_value(0)
138 if not(self.set_freq(options.freq)):
139 self._set_status_msg("Failed to set initial frequency")
141 def _set_status_msg(self, msg):
142 self.frame.GetStatusBar().SetStatusText(msg, 0)
144 def _build_gui(self, vbox):
146 def _form_set_freq(kv):
147 return self.set_freq(kv['freq'])
149 vbox.Add(self.scope.win, 10, wx.EXPAND)
151 # add control area at the bottom
152 self.myform = myform = form.form()
153 hbox = wx.BoxSizer(wx.HORIZONTAL)
154 hbox.Add((5,0), 0, 0)
155 myform['freq'] = form.float_field(
156 parent=self.panel, sizer=hbox, label="Center freq", weight=1,
157 callback=myform.check_input_and_call(_form_set_freq, self._set_status_msg))
159 hbox.Add((5,0), 0, 0)
160 g = self.subdev.gain_range()
161 myform['gain'] = form.slider_field(parent=self.panel, sizer=hbox, label="Gain",
163 min=int(g[0]), max=int(g[1]),
164 callback=self.set_gain)
166 hbox.Add((5,0), 0, 0)
167 vbox.Add(hbox, 0, wx.EXPAND)
169 self._build_subpanel(vbox)
171 def _build_subpanel(self, vbox_arg):
172 # build a secondary information panel (sometimes hidden)
174 # FIXME figure out how to have this be a subpanel that is always
175 # created, but has its visibility controlled by foo.Show(True/False)
177 def _form_set_decim(kv):
178 return self.set_decim(kv['decim'])
180 if not(self.show_debug_info):
187 #panel = wx.Panel(self.panel, -1)
188 #vbox = wx.BoxSizer(wx.VERTICAL)
190 hbox = wx.BoxSizer(wx.HORIZONTAL)
193 myform['decim'] = form.int_field(
194 parent=panel, sizer=hbox, label="Decim",
195 callback=myform.check_input_and_call(_form_set_decim, self._set_status_msg))
198 myform['fs@usb'] = form.static_float_field(
199 parent=panel, sizer=hbox, label="Fs@USB")
202 myform['dbname'] = form.static_text_field(
203 parent=panel, sizer=hbox)
206 myform['baseband'] = form.static_float_field(
207 parent=panel, sizer=hbox, label="Analog BB")
210 myform['ddc'] = form.static_float_field(
211 parent=panel, sizer=hbox, label="DDC")
214 vbox.Add(hbox, 0, wx.EXPAND)
217 def set_freq(self, target_freq):
219 Set the center frequency we're interested in.
221 @param target_freq: frequency in Hz
224 Tuning is a two step process. First we ask the front-end to
225 tune as close to the desired frequency as it can. Then we use
226 the result of that operation and our target_frequency to
227 determine the value for the digital down converter.
229 r = self.u.tune(0, self.subdev, target_freq)
232 self.myform['freq'].set_value(target_freq) # update displayed value
233 if self.show_debug_info:
234 self.myform['baseband'].set_value(r.baseband_freq)
235 self.myform['ddc'].set_value(r.dxc_freq)
240 def set_gain(self, gain):
241 self.myform['gain'].set_value(gain) # update displayed value
242 self.subdev.set_gain(gain)
244 def set_decim(self, decim):
245 ok = self.u.set_decim_rate(decim)
247 print "set_decim failed"
248 input_rate = self.u.adc_freq() / self.u.decim_rate()
249 self.scope.set_sample_rate(input_rate)
250 if self.show_debug_info: # update displayed values
251 self.myform['decim'].set_value(self.u.decim_rate())
252 self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate())
256 app = stdgui.stdapp(app_flow_graph, "USRP FFT", nstatus=1)
259 if __name__ == '__main__':