#!/usr/bin/env python # # Copyright 2004 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, scopesink, slider from optparse import OptionParser import wx class app_flow_graph (stdgui.gui_flow_graph): def __init__(self, frame, panel, vbox, argv): stdgui.gui_flow_graph.__init__ (self, frame, panel, vbox, argv) self.frame = frame self.panel = panel parser = OptionParser (option_class=eng_option) parser.add_option ("-d", "--decim", type="int", default=8, help="set fgpa decimation rate to DECIM") parser.add_option ("-c", "--ddc-freq", type="eng_float", default=0, help="set Digital downconverter frequency to FREQ", metavar="FREQ") parser.add_option ("-f", "--freq", type="eng_float", default=950e6, help="set RF downconverter frequency to FREQ", metavar="FREQ") parser.add_option ("-m", "--mux", type="intx", default=0x32103210, help="set fpga FR_RX_MUX register to MUX") parser.add_option ("-g", "--gain", type="eng_float", default=0, help="set Rx PGA gain in dB (default 0 dB)") (options, args) = parser.parse_args () self.u = usrp.source_c (0, options.decim, 1, gru.hexint(options.mux), 0) self.u.set_verbose (0) input_rate = self.u.adc_freq () / self.u.decim_rate () block = fftsink.fft_sink_c (self, panel, fft_size=1024, sample_rate=input_rate) self.connect (self.u, block) vbox.Add (block.win, 10, wx.EXPAND) if 0: c2f_1 = gr.complex_to_float () scope = scopesink.scope_sink_f (self, panel, "Rx Data", input_rate) vbox.Add (scope.win, 6, wx.EXPAND) self.connect (self.u,c2f_1) self.connect ((c2f_1, 0), (scope, 0)) self.connect ((c2f_1, 1), (scope, 1)) if 0: rms_complex = gr.rms_cf(.0001) rms_i = gr.rms_ff(.0001) rms_q = gr.rms_ff(.0001) self.connect(self.u,rms_complex) self.connect((c2f_1,0),rms_i) self.connect((c2f_1,1),rms_q) ns1 = gr.null_sink(4) ns2 = gr.null_sink(4) ns3 = gr.null_sink(4) self.connect(rms_complex,ns1) self.connect(rms_i,ns2) self.connect(rms_q,ns3) # sliders #vbox.Add(slider.slider(panel, 0, 104, self.set_gain), 1, wx.ALIGN_CENTER) #vbox.Add(slider.slider(panel, 0, 4095, self.set_gain_gc1), 1, wx.ALIGN_CENTER) #vbox.Add(slider.slider(panel, 0, 31, self.set_gain_gc2), 1, wx.ALIGN_CENTER) #vbox.Add(slider.slider(panel, 0, 1, self.set_gain_dl), 1, wx.ALIGN_CENTER) #vbox.Add(slider.slider(panel, 0, 200, self.set_gain_i), 1, wx.ALIGN_CENTER) #vbox.Add(slider.slider(panel, 0, 200, self.set_gain_q), 1, wx.ALIGN_CENTER) self.offset = 0 #vbox.Add(slider.slider(panel, -200, 200, self.set_offset_i), 1, wx.ALIGN_CENTER) #vbox.Add(slider.slider(panel, -200, 200, self.set_offset_q), 1, wx.ALIGN_CENTER) vbox.Add(slider.slider(panel, 380, 480, self.set_rf_freq), 1, wx.EXPAND|wx.ALIGN_CENTER) vbox.Add(slider.slider(panel, -32000, +32000, self.set_if_freq), 1, wx.EXPAND|wx.ALIGN_CENTER) vbox.Add(slider.slider(panel, 0, 4095, self.set_gain), 1, wx.EXPAND|wx.ALIGN_CENTER) # build small control area at bottom hbox = wx.BoxSizer (wx.HORIZONTAL) hbox.Add ((1, 1), 1, wx.EXPAND) hbox.Add (wx.StaticText (panel, -1, "Set ddc freq: "), 0, wx.ALIGN_CENTER) self.tc_freq = wx.TextCtrl (panel, -1, "", style=wx.TE_PROCESS_ENTER) hbox.Add (self.tc_freq, 0, wx.ALIGN_CENTER) wx.EVT_TEXT_ENTER (self.tc_freq, self.tc_freq.GetId(), self.handle_text_enter) hbox.Add ((1, 1), 1, wx.EXPAND) # add it to the main vbox vbox.Add (hbox, 0, wx.EXPAND) self.update_status_bar () def set_rf_freq (self,freq): (success,actual_freq) = self.set_freq(1e6*freq) if not success: print "Failed on ",freq def set_if_freq (self,freq): self.u.set_rx_freq(0,freq*1e3) def set_gain (self,gain): self.rfrx.set_gain(gain) def set_gain_i (self,gain): self.u.set_pga(0,gain/10.0) def set_gain_q (self,gain): self.u.set_pga(1,gain/10.0) def set_offset_i(self,offset): self.offset = (self.offset & 0x0000ffff) | ((offset&0xffff)<<16) self.u._write_fpga_reg (3,self.offset) def set_offset_q(self,offset): self.offset = (self.offset & 0xffff0000) | (offset&0xffff) self.u._write_fpga_reg (3,self.offset) def handle_text_enter (self, event): str = event.GetString () self.tc_freq.Clear () self.u.set_rx_freq (0, eng_notation.str_to_num (str)) self.update_status_bar () def update_status_bar (self): ddc_freq = self.u.rx_freq (0) decim_rate = self.u.decim_rate () sample_rate = self.u.adc_freq () / decim_rate msg = "decim: %d %sS/s DDC: %s" % ( decim_rate, eng_notation.num_to_str (sample_rate), eng_notation.num_to_str (ddc_freq)) self.frame.GetStatusBar().SetStatusText (msg, 1) def set_gain(self,gain): assert gain>=0 and gain<4096 self.u.write_aux_dac(0,0,int(gain)) def main (): app = stdgui.stdapp (app_flow_graph, "USRP FFT") app.MainLoop () if __name__ == '__main__': main ()