#!/usr/bin/env python # # Copyright 2004,2005 Free Software Foundation, Inc. # # This file is part of GNU Radio # # GNU Radio is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2, or (at your option) # any later version. # # GNU Radio is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with GNU Radio; see the file COPYING. If not, write to # the Free Software Foundation, Inc., 51 Franklin Street, # Boston, MA 02110-1301, USA. # from gnuradio import gr, gru from gnuradio import usrp from gnuradio import eng_notation from gnuradio.eng_option import eng_option from gnuradio.wxgui import stdgui, fftsink, waterfallsink, scopesink, form, slider from gnuradio.blksimpl.dqpsk import dqpsk_mod from optparse import OptionParser import wx import sys from gnuradio import cxadc class app_flow_graph(stdgui.gui_flow_graph): def __init__(self, frame, panel, vbox, argv): stdgui.gui_flow_graph.__init__(self) self.frame = frame self.panel = panel usage="%prog: [options] input_filename" parser = OptionParser(option_class=eng_option, usage=usage) parser.add_option("-f", "--freq", type="eng_float", default=None, help="set frequency to FREQ", metavar="FREQ") parser.add_option("-W", "--waterfall", action="store_true", default=False, help="Enable waterfall display") parser.add_option("-S", "--oscilloscope", action="store_true", default=False, help="Enable oscilloscope display") parser.add_option("-n", "--frame-decim", type="int", default=1, help="set oscope frame decimation factor to n [default=1]") parser.add_option("-v", "--v-scale", type="eng_float", default=1000, help="set oscope initial V/div to SCALE [default=%default]") parser.add_option("-t", "--t-scale", type="eng_float", default=49e-6, help="set oscope initial s/div to SCALE [default=50us]") (options, args) = parser.parse_args() if len(args) != 0: parser.print_help() raise SystemExit, 1 self.show_debug_info = True #self.noise_float= gr.noise_source_f(gr.GR_UNIFORM ,127.5,0) #self.noise_char=gr.float_to_char() #self.src = gr.file_source(gr.sizeof_gr_complex, filename, True) input_rate = 32.0e6 #27e6 #// public shared_ptr constructor #cxadc_source_sptr #cxadc_make_source (double sampling_freq = 27e6,//sampling_freq is ignored at the moment. TODO: implement sampling_freq # int do_avg_frame=1, # double frame_avg_alpha=0.01, # const std::string dev = "/dev/cxadc") throw (std::runtime_error); if True: #options.input_shorts: self.cxadc=cxadc.source (input_rate,0,0.1,"/dev/cxadc") self.fsrc=gr.short_to_float() #self.csrc= gr.interleaved_short_to_complex() self.connect(self.cxadc,self.fsrc) else: self.fsrc= cxadc.source_f (sampling_freq = input_rate,do_avg_frame=True,frame_avg_alpha=0.01,dev = "/dev/cxadc") if options.waterfall: self.scope = \ waterfallsink.waterfall_sink_f (self, panel, fft_size=1024, sample_rate=input_rate) elif options.oscilloscope: #self.scope = scopesink.scope_sink_c(self, panel, sample_rate=input_rate) self.scope = scopesink.scope_sink_f(self, panel, sample_rate=input_rate, frame_decim=options.frame_decim, v_scale=options.v_scale, t_scale=options.t_scale) else: self.scope = fftsink.fft_sink_f (self, panel, fft_size=1024, sample_rate=input_rate,avg_alpha=0.1*2.0 / 15.0) self.connect(self.fsrc, self.scope) self._build_gui(vbox) # set initial values #if options.gain is None: # # if no gain was specified, use the mid-point in dB # g = self.subdev.gain_range() # options.gain = float(g[0]+g[1])/2 #if options.freq is None: # # if no freq was specified, use the mid-point # r = self.subdev.freq_range() # options.freq = float(r[0]+r[1])/2 #self.set_gain(options.gain) if self.show_debug_info: self.myform['decim'].set_value(1)#self.u.decim_rate()) self.myform['fs@usb'].set_value(1)#self.u.adc_freq() / self.u.decim_rate()) self.myform['dbname'].set_value("")#self.subdev.name()) self.myform['baseband'].set_value(0) self.myform['ddc'].set_value(0) if not(self.set_freq(options.freq)): self._set_status_msg("Failed to set initial frequency") def _set_status_msg(self, msg): self.frame.GetStatusBar().SetStatusText(msg, 0) def _build_gui(self, vbox): def _form_set_freq(kv): return self.set_freq(kv['freq']) vbox.Add(self.scope.win, 10, wx.EXPAND) # add control area at the bottom self.myform = myform = form.form() hbox = wx.BoxSizer(wx.HORIZONTAL) hbox.Add((5,0), 0, 0) myform['freq'] = form.float_field( parent=self.panel, sizer=hbox, label="Center freq", weight=1, callback=myform.check_input_and_call(_form_set_freq, self._set_status_msg)) hbox.Add((5,0), 0, 0) g = (0,0)#self.subdev.gain_range() myform['gain'] = form.slider_field(parent=self.panel, sizer=hbox, label="Gain", weight=3, min=int(g[0]), max=int(g[1]), callback=self.set_gain) hbox.Add((5,0), 0, 0) vbox.Add(hbox, 0, wx.EXPAND) self._build_subpanel(vbox) def _build_subpanel(self, vbox_arg): # build a secondary information panel (sometimes hidden) # FIXME figure out how to have this be a subpanel that is always # created, but has its visibility controlled by foo.Show(True/False) def _form_set_decim(kv): return self.set_decim(kv['decim']) if not(self.show_debug_info): return panel = self.panel vbox = vbox_arg myform = self.myform #panel = wx.Panel(self.panel, -1) #vbox = wx.BoxSizer(wx.VERTICAL) hbox = wx.BoxSizer(wx.HORIZONTAL) hbox.Add((5,0), 0) myform['decim'] = form.int_field( parent=panel, sizer=hbox, label="Decim", callback=myform.check_input_and_call(_form_set_decim, self._set_status_msg)) hbox.Add((5,0), 1) myform['fs@usb'] = form.static_float_field( parent=panel, sizer=hbox, label="Fs@USB") hbox.Add((5,0), 1) myform['dbname'] = form.static_text_field( parent=panel, sizer=hbox) hbox.Add((5,0), 1) myform['baseband'] = form.static_float_field( parent=panel, sizer=hbox, label="Analog BB") hbox.Add((5,0), 1) myform['ddc'] = form.static_float_field( parent=panel, sizer=hbox, label="DDC") hbox.Add((5,0), 0) vbox.Add(hbox, 0, wx.EXPAND) def set_freq(self, target_freq): """ Set the center frequency we're interested in. @param target_freq: frequency in Hz @rypte: bool Tuning is a two step process. First we ask the front-end to tune as close to the desired frequency as it can. Then we use the result of that operation and our target_frequency to determine the value for the digital down converter. """ #r = self.u.tune(0, self.subdev, target_freq) r=False if r: self.myform['freq'].set_value(target_freq) # update displayed value if self.show_debug_info: self.myform['baseband'].set_value(r.baseband_freq) self.myform['ddc'].set_value(r.dxc_freq) return True return False def set_gain(self, gain): self.myform['gain'].set_value(gain) # update displayed value #self.subdev.set_gain(gain) def set_decim(self, decim): ok = False #self.u.set_decim_rate(decim) if not ok: print "set_decim failed" #input_rate = self.u.adc_freq() / self.u.decim_rate() #self.scope.set_sample_rate(input_rate) if self.show_debug_info: # update displayed values self.myform['decim'].set_value(self.u.decim_rate()) self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate()) return ok def main (): app = stdgui.stdapp(app_flow_graph, "USRP FFT", nstatus=1) app.MainLoop() if __name__ == '__main__': main ()