3 # Copyright 2004,2005,2006 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 # print "Loading revised usrp_oscope with additional options for scopesink..."
25 from gnuradio import gr, gru
26 from gnuradio import usrp
27 from gnuradio import eng_notation
28 from gnuradio.eng_option import eng_option
29 from gnuradio.wxgui import stdgui, fftsink, waterfallsink, scopesink, form, slider
30 from optparse import OptionParser
35 def pick_subdevice(u):
37 The user didn't specify a subdevice on the command line.
38 If there's a daughterboard on A, select A.
39 If there's a daughterboard on B, select B.
42 if u.db[0][0].dbid() >= 0: # dbid is < 0 if there's no d'board or a problem
44 if u.db[1][0].dbid() >= 0:
49 class app_flow_graph(stdgui.gui_flow_graph):
50 def __init__(self, frame, panel, vbox, argv):
51 stdgui.gui_flow_graph.__init__(self)
56 parser = OptionParser(option_class=eng_option)
57 parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None,
58 help="select USRP Rx side A or B (default=first one with a daughterboard)")
59 parser.add_option("-d", "--decim", type="int", default=16,
60 help="set fgpa decimation rate to DECIM [default=%default]")
61 parser.add_option("-f", "--freq", type="eng_float", default=None,
62 help="set frequency to FREQ", metavar="FREQ")
63 parser.add_option("-g", "--gain", type="eng_float", default=None,
64 help="set gain in dB (default is midpoint)")
65 parser.add_option("-8", "--width-8", action="store_true", default=False,
66 help="Enable 8-bit samples across USB")
67 parser.add_option("-n", "--frame-decim", type="int", default=1,
68 help="set oscope frame decimation factor to n [default=1]")
69 parser.add_option("-v", "--v-scale", type="eng_float", default=1000,
70 help="set oscope initial V/div to SCALE [default=%default]")
71 parser.add_option("-t", "--t-scale", type="eng_float", default=49e-6,
72 help="set oscope initial s/div to SCALE [default=50us]")
73 (options, args) = parser.parse_args()
78 self.show_debug_info = True
82 self.u = usrp.source_c(decim_rate=options.decim)
83 if options.rx_subdev_spec is None:
84 options.rx_subdev_spec = pick_subdevice(self.u)
85 self.u.set_mux(usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec))
90 format = self.u.make_format(width, shift)
91 #print "format =", hex(format)
92 r = self.u.set_format(format)
93 #print "set_format =", r
95 # determine the daughterboard subdevice we're using
96 self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec)
98 input_rate = self.u.adc_freq() / self.u.decim_rate()
100 self.scope = scopesink.scope_sink_c(self, panel, sample_rate=input_rate,
101 frame_decim=options.frame_decim,
102 v_scale=options.v_scale,
103 t_scale=options.t_scale)
104 self.connect(self.u, self.scope)
106 self._build_gui(vbox)
110 if options.gain is None:
111 # if no gain was specified, use the mid-point in dB
112 g = self.subdev.gain_range()
113 options.gain = float(g[0]+g[1])/2
115 if options.freq is None:
116 # if no freq was specified, use the mid-point
117 r = self.subdev.freq_range()
118 options.freq = float(r[0]+r[1])/2
120 self.set_gain(options.gain)
122 if self.show_debug_info:
123 self.myform['decim'].set_value(self.u.decim_rate())
124 self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate())
125 self.myform['dbname'].set_value(self.subdev.name())
126 self.myform['baseband'].set_value(0)
127 self.myform['ddc'].set_value(0)
129 if not(self.set_freq(options.freq)):
130 self._set_status_msg("Failed to set initial frequency")
133 def _set_status_msg(self, msg):
134 self.frame.GetStatusBar().SetStatusText(msg, 0)
136 def _build_gui(self, vbox):
138 def _form_set_freq(kv):
139 return self.set_freq(kv['freq'])
141 vbox.Add(self.scope.win, 10, wx.EXPAND)
143 # add control area at the bottom
144 self.myform = myform = form.form()
145 hbox = wx.BoxSizer(wx.HORIZONTAL)
146 hbox.Add((5,0), 0, 0)
147 myform['freq'] = form.float_field(
148 parent=self.panel, sizer=hbox, label="Center freq", weight=1,
149 callback=myform.check_input_and_call(_form_set_freq, self._set_status_msg))
151 hbox.Add((5,0), 0, 0)
152 g = self.subdev.gain_range()
153 myform['gain'] = form.slider_field(parent=self.panel, sizer=hbox, label="Gain",
155 min=int(g[0]), max=int(g[1]),
156 callback=self.set_gain)
158 hbox.Add((5,0), 0, 0)
159 vbox.Add(hbox, 0, wx.EXPAND)
161 self._build_subpanel(vbox)
163 def _build_subpanel(self, vbox_arg):
164 # build a secondary information panel (sometimes hidden)
166 # FIXME figure out how to have this be a subpanel that is always
167 # created, but has its visibility controlled by foo.Show(True/False)
169 def _form_set_decim(kv):
170 return self.set_decim(kv['decim'])
172 if not(self.show_debug_info):
179 #panel = wx.Panel(self.panel, -1)
180 #vbox = wx.BoxSizer(wx.VERTICAL)
182 hbox = wx.BoxSizer(wx.HORIZONTAL)
185 myform['decim'] = form.int_field(
186 parent=panel, sizer=hbox, label="Decim",
187 callback=myform.check_input_and_call(_form_set_decim, self._set_status_msg))
190 myform['fs@usb'] = form.static_float_field(
191 parent=panel, sizer=hbox, label="Fs@USB")
194 myform['dbname'] = form.static_text_field(
195 parent=panel, sizer=hbox)
198 myform['baseband'] = form.static_float_field(
199 parent=panel, sizer=hbox, label="Analog BB")
202 myform['ddc'] = form.static_float_field(
203 parent=panel, sizer=hbox, label="DDC")
206 vbox.Add(hbox, 0, wx.EXPAND)
209 def set_freq(self, target_freq):
211 Set the center frequency we're interested in.
213 @param target_freq: frequency in Hz
216 Tuning is a two step process. First we ask the front-end to
217 tune as close to the desired frequency as it can. Then we use
218 the result of that operation and our target_frequency to
219 determine the value for the digital down converter.
221 r = usrp.tune(self.u, 0, self.subdev, target_freq)
224 self.myform['freq'].set_value(target_freq) # update displayed value
225 if self.show_debug_info:
226 self.myform['baseband'].set_value(r.baseband_freq)
227 self.myform['ddc'].set_value(r.dxc_freq)
232 def set_gain(self, gain):
233 self.myform['gain'].set_value(gain) # update displayed value
234 self.subdev.set_gain(gain)
236 def set_decim(self, decim):
237 ok = self.u.set_decim_rate(decim)
239 print "set_decim failed"
240 input_rate = self.u.adc_freq() / self.u.decim_rate()
241 self.scope.set_sample_rate(input_rate)
242 if self.show_debug_info: # update displayed values
243 self.myform['decim'].set_value(self.u.decim_rate())
244 self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate())
248 app = stdgui.stdapp(app_flow_graph, "USRP O'scope", nstatus=1)
251 if __name__ == '__main__':