1#!/usr/local/bin/python3.8 2# 3# This is mrfm_fft_sos.py 4# Modification of Matt's mrfm_fft.py that reads filter coefs from file 5# 6# Copyright 2004,2005 Free Software Foundation, Inc. 7# 8# This file is part of GNU Radio 9# 10# GNU Radio is free software; you can redistribute it and/or modify 11# it under the terms of the GNU General Public License as published by 12# the Free Software Foundation; either version 3, or (at your option) 13# any later version. 14# 15# GNU Radio is distributed in the hope that it will be useful, 16# but WITHOUT ANY WARRANTY; without even the implied warranty of 17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18# GNU General Public License for more details. 19# 20# You should have received a copy of the GNU General Public License 21# along with GNU Radio; see the file COPYING. If not, write to 22# the Free Software Foundation, Inc., 51 Franklin Street, 23# Boston, MA 02110-1301, USA. 24# 25 26from gnuradio import gr, gru 27from gnuradio import usrp 28from gnuradio import eng_notation 29from gnuradio.eng_option import eng_option 30from gnuradio.wxgui import stdgui, fftsink, waterfallsink, scopesink, form, slider 31from optparse import OptionParser 32import wx 33import sys 34import mrfm 35 36 37def pick_subdevice(u): 38 """ 39 The user didn't specify a subdevice on the command line. 40 If there's a daughterboard on A, select A. 41 If there's a daughterboard on B, select B. 42 Otherwise, select A. 43 """ 44 if u.db[0][0].dbid() >= 0: # dbid is < 0 if there's no d'board or a problem 45 return (0, 0) 46 if u.db[1][0].dbid() >= 0: 47 return (1, 0) 48 return (0, 0) 49 50def read_ints(filename): 51 try: 52 f = open(filename) 53 ints = [ int(i) for i in f.read().split() ] 54 f.close() 55 return ints 56 except: 57 return [] 58 59class app_flow_graph(stdgui.gui_flow_graph): 60 def __init__(self, frame, panel, vbox, argv): 61 stdgui.gui_flow_graph.__init__(self) 62 63 self.frame = frame 64 self.panel = panel 65 66 parser = OptionParser(option_class=eng_option) 67 parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None, 68 help="select USRP Rx side A or B (default=first one with a daughterboard)") 69 parser.add_option("-d", "--decim", type="int", default=16, 70 help="set fgpa decimation rate to DECIM [default=%default]") 71 parser.add_option("-f", "--freq", type="eng_float", default=None, 72 help="set frequency to FREQ", metavar="FREQ") 73 parser.add_option("-g", "--gain", type="eng_float", default=None, 74 help="set gain in dB (default is midpoint)") 75 parser.add_option("-W", "--waterfall", action="store_true", default=False, 76 help="Enable waterfall display") 77 parser.add_option("-8", "--width-8", action="store_true", default=False, 78 help="Enable 8-bit samples across USB") 79 parser.add_option("-S", "--oscilloscope", action="store_true", default=False, 80 help="Enable oscilloscope display") 81 parser.add_option("-F", "--filename", default=None, 82 help="Name of file with filter coefficients") 83 parser.add_option("-C", "--cfilename", default=None, 84 help="Name of file with compensator coefficients") 85 parser.add_option("-B", "--bitstream", default="mrfm.rbf", 86 help="Name of FPGA Bitstream file (.rbf)") 87 parser.add_option("-n", "--frame-decim", type="int", default=20, 88 help="set oscope frame decimation factor to n [default=12]") 89 (options, args) = parser.parse_args() 90 if len(args) != 0: 91 parser.print_help() 92 sys.exit(1) 93 94 self.show_debug_info = True 95 96 # default filter coefs 97 b00 = b01 = 16384 98 b10 = b20 = a10 = a20 = b11 = b21 = a11 = a21 = 0 99 100 ba = read_ints(options.filename) 101 if len(ba) >= 6: 102 b00 = ba[0]; b10 = ba[1]; b20 = ba[2]; a10 = ba[4]; a20 = ba[5] 103 if len(ba) >= 12: 104 b01 = ba[6]; b11 = ba[7]; b21 = ba[8]; a11 = ba[10]; a21=ba[11] 105 print b00, b10, b20, a10, a20, b01, b11, b21, a11, a21 106 107 # default compensator coefficients 108 c11 = c22 = 1 109 c12 = c21 = cscale = 0 110 111 cs = read_ints(options.cfilename) 112 if len(cs) >= 5: 113 c11 = cs[0]; c12 = cs[1]; c21 = cs[2]; c22 = cs[3]; cscale = cs[4] 114 print c11, c12, c21, c22, cscale 115 116 # build the graph 117 self.u = mrfm.source_c(options.bitstream) 118 119 self.u.set_decim_rate(options.decim) 120 self.u.set_center_freq(options.freq) 121 122 frac_bits = 14 123 self.u.set_coeffs(frac_bits,b20,b10,b00,a20,a10,b21,b11,b01,a21,a11) 124 125 self.u.set_compensator(c11,c12,c21,c22,cscale) 126 127 if options.rx_subdev_spec is None: 128 options.rx_subdev_spec = pick_subdevice(self.u) 129 self.u.set_mux(usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec)) 130 131 if options.width_8: 132 width = 8 133 shift = 8 134 format = self.u.make_format(width, shift) 135 print "format =", hex(format) 136 r = self.u.set_format(format) 137 print "set_format =", r 138 139 # determine the daughterboard subdevice we're using 140 self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec) 141 142 #input_rate = self.u.adc_freq() / self.u.decim_rate() 143 input_rate = self.u.adc_freq() / options.decim 144 145 # fft_rate = 15 146 fft_rate = 5 147 148 self.deint = gr.deinterleave(gr.sizeof_gr_complex) 149 self.connect(self.u,self.deint) 150 151 if options.waterfall: 152 self.scope1=waterfallsink.waterfall_sink_c (self, panel, fft_size=1024, sample_rate=input_rate, 153 fft_rate=fft_rate) 154 self.scope2=waterfallsink.waterfall_sink_c (self, panel, fft_size=1024, sample_rate=input_rate, 155 fft_rate=fft_rate) 156 157 elif options.oscilloscope: 158 self.scope1 = scopesink.scope_sink_c(self, panel, sample_rate=input_rate,frame_decim=options.frame_decim) # added option JPJ 4/21/2006 159 self.scope2 = scopesink.scope_sink_c(self, panel, sample_rate=input_rate,frame_decim=options.frame_decim) 160 161 else: 162 self.scope1 = fftsink.fft_sink_c (self, panel, fft_size=1024, sample_rate=input_rate, 163 fft_rate=fft_rate) 164 self.scope2 = fftsink.fft_sink_c (self, panel, fft_size=1024, sample_rate=input_rate, 165 fft_rate=fft_rate) 166 167 # Show I, I' on top scope panel, Q, Q' on bottom 168 #self.fin = gr.complex_to_float() 169 #self.fout = gr.complex_to_float() 170 171 #self.connect((self.deint,0), self.fin) 172 #self.connect((self.deint,1), self.fout) 173 174 #self.ii = gr.float_to_complex() 175 #self.qq = gr.float_to_complex() 176 177 #self.connect((self.fin,0), (self.ii,0)) 178 #self.connect((self.fout,0), (self.ii,1)) 179 #self.connect((self.fin,1), (self.qq,0)) 180 #self.connect((self.fout,1), (self.qq,1)) 181 182 #self.connect(self.ii, self.scope1) 183 #self.connect(self.qq, self.scope2) 184 185 self.connect ((self.deint,0),self.scope1) 186 self.connect ((self.deint,1),self.scope2) 187 188 self._build_gui(vbox) 189 190 # set initial values 191 192 if options.gain is None: 193 # if no gain was specified, use the mid-point in dB 194 g = self.subdev.gain_range() 195 options.gain = float(g[0]+g[1])/2 196 197 if options.freq is None: 198 # if no freq was specified, use the mid-point 199 r = self.subdev.freq_range() 200 options.freq = float(r[0]+r[1])/2 201 202 self.set_gain(options.gain) 203 204 if not(self.set_freq(options.freq)): 205 self._set_status_msg("Failed to set initial frequency") 206 207 if self.show_debug_info: 208 self.myform['decim'].set_value(self.u.decim_rate()) 209 self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate()) 210 self.myform['dbname'].set_value(self.subdev.name()) 211 212 213 def _set_status_msg(self, msg): 214 self.frame.GetStatusBar().SetStatusText(msg, 0) 215 216 def _build_gui(self, vbox): 217 218 def _form_set_freq(kv): 219 return self.set_freq(kv['freq']) 220 221 vbox.Add(self.scope1.win, 10, wx.EXPAND) 222 vbox.Add(self.scope2.win, 10, wx.EXPAND) 223 224 # add control area at the bottom 225 self.myform = myform = form.form() 226 hbox = wx.BoxSizer(wx.HORIZONTAL) 227 hbox.Add((5,0), 0, 0) 228 myform['freq'] = form.float_field( 229 parent=self.panel, sizer=hbox, label="Center freq", weight=1, 230 callback=myform.check_input_and_call(_form_set_freq, self._set_status_msg)) 231 232 hbox.Add((5,0), 0, 0) 233 g = self.subdev.gain_range() 234 myform['gain'] = form.slider_field(parent=self.panel, sizer=hbox, label="Gain", 235 weight=3, 236 min=int(g[0]), max=int(g[1]), 237 callback=self.set_gain) 238 239 hbox.Add((5,0), 0, 0) 240 vbox.Add(hbox, 0, wx.EXPAND) 241 242 self._build_subpanel(vbox) 243 244 def _build_subpanel(self, vbox_arg): 245 # build a secondary information panel (sometimes hidden) 246 247 # FIXME figure out how to have this be a subpanel that is always 248 # created, but has its visibility controlled by foo.Show(True/False) 249 250 if not(self.show_debug_info): 251 return 252 253 panel = self.panel 254 vbox = vbox_arg 255 myform = self.myform 256 257 #panel = wx.Panel(self.panel, -1) 258 #vbox = wx.BoxSizer(wx.VERTICAL) 259 260 hbox = wx.BoxSizer(wx.HORIZONTAL) 261 hbox.Add((5,0), 0) 262 myform['decim'] = form.static_float_field( 263 parent=panel, sizer=hbox, label="Decim") 264 265 hbox.Add((5,0), 1) 266 myform['fs@usb'] = form.static_float_field( 267 parent=panel, sizer=hbox, label="Fs@USB") 268 269 hbox.Add((5,0), 1) 270 myform['dbname'] = form.static_text_field( 271 parent=panel, sizer=hbox) 272 273 hbox.Add((5,0), 1) 274 myform['baseband'] = form.static_float_field( 275 parent=panel, sizer=hbox, label="Analog BB") 276 277 hbox.Add((5,0), 1) 278 myform['ddc'] = form.static_float_field( 279 parent=panel, sizer=hbox, label="DDC") 280 281 hbox.Add((5,0), 0) 282 vbox.Add(hbox, 0, wx.EXPAND) 283 284 285 286 def set_freq(self, target_freq): 287 """ 288 Set the center frequency we're interested in. 289 290 @param target_freq: frequency in Hz 291 @rypte: bool 292 293 Tuning is a two step process. First we ask the front-end to 294 tune as close to the desired frequency as it can. Then we use 295 the result of that operation and our target_frequency to 296 determine the value for the digital down converter. 297 """ 298 r = self.u.tune(0, self.subdev, target_freq) 299 300 if r: 301 self.myform['freq'].set_value(target_freq) # update displayed value 302 if self.show_debug_info: 303 self.myform['baseband'].set_value(r.baseband_freq) 304 self.myform['ddc'].set_value(r.dxc_freq) 305 return True 306 307 return False 308 309 def set_gain(self, gain): 310 self.myform['gain'].set_value(gain) # update displayed value 311 self.subdev.set_gain(gain) 312 313 314def main (): 315 app = stdgui.stdapp(app_flow_graph, "USRP FFT", nstatus=1) 316 app.MainLoop() 317 318if __name__ == '__main__': 319 main () 320