#!/usr/bin/env python # # Copyright 2005,2006,2007 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 3, 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, eng_notation from gnuradio import msdd from gnuradio import blks2 from gnuradio.eng_option import eng_option from gnuradio.wxgui import slider, powermate from gnuradio.wxgui import stdgui2, form from gnuradio.wxgui import fftsink2 from optparse import OptionParser #from usrpm import usrp_dbid import sys import math import wx class wfm_rx_block (stdgui2.std_top_block): def __init__(self,frame,panel,vbox,argv): stdgui2.std_top_block.__init__ (self,frame,panel,vbox,argv) parser=OptionParser(option_class=eng_option) # parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None, # help="select MSDD Rx side A or B (default=A)") parser.add_option("-f", "--freq", type="eng_float", default=100.1e6, help="set frequency to FREQ", metavar="FREQ") parser.add_option("-g", "--gain", type="eng_float", default=40, help="set gain in dB (default is midpoint)") # parser.add_option("-V", "--volume", type="eng_float", default=None, # help="set volume (default is midpoint)") # parser.add_option("-O", "--audio-output", type="string", default="", # help="pcm device name. E.g., hw:0,0 or surround51 or /dev/dsp") (options, args) = parser.parse_args() if len(args) != 0: parser.print_help() sys.exit(1) self.frame = frame self.panel = panel self.vol = 0 self.gain_range = (10, 70, .5) self.state = "FREQ" self.freq = 0 msdd_decim = 2 # build graph self.fft_size = 8192 self.sample_rate = 200 self.u = msdd.source_c(0, 1, "10.45.4.44", 10000) self.u.set_decim_rate(4) self.u.set_desired_packet_size(0, 1460*100) #self.u.set_decim_rate(msdd_decim) # usrp_rate = adc_rate / msdd_decim # 320 kS/s # chanfilt_decim = 1 # demod_rate = usrp_rate / chanfilt_decim # audio_decimation = 10 # audio_rate = demod_rate / audio_decimation # 32 kHz # # if options.rx_subdev_spec is None: # options.rx_subdev_spec = pick_subdevice(self.u) # # self.u.set_mux(usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec)) # self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec) # print "Using RX d'board %s" % (self.subdev.side_and_name(),) # # # chan_filt_coeffs = optfir.low_pass (1, # gain # usrp_rate, # sampling rate # 80e3, # passband cutoff # 115e3, # stopband cutoff # 0.1, # passband ripple # 60) # stopband attenuation # #print len(chan_filt_coeffs) # chan_filt = gr.fir_filter_ccf (chanfilt_decim, chan_filt_coeffs) # # self.guts = blks2.wfm_rcv (demod_rate, audio_decimation) # # self.volume_control = gr.multiply_const_ff(self.vol) # # # sound card as final sink # audio_sink = audio.sink (int (audio_rate), # options.audio_output, # False) # ok_to_block # now wire it all together #self.connect (self.u, chan_filt, self.guts, self.volume_control, audio_sink) self._build_gui(vbox) if options.gain is None: # if no gain was specified, use the mid-point in dB #g = self.subdev.gain_range() g = self.gain_range options.gain = float(g[0]+g[1])/2 # # if options.volume is None: # g = self.volume_range() # options.volume = float(g[0]+g[1])/2 # # if abs(options.freq) < 1e6: # options.freq *= 1e6 # set initial values # self.set_gain(options.gain) # self.set_vol(options.volume) if not(self.set_freq(options.freq)): self._set_status_msg("Failed to set initial frequency") print "Frequency: ", self.u.rx_freq(0) def _set_status_msg(self, msg, which=0): self.frame.GetStatusBar().SetStatusText(msg, which) def _build_gui(self, vbox): def _form_set_freq(kv): return self.set_freq(kv['freq']) self.src_fft = None if 1: self.src_fft = fftsink2.fft_sink_c(self.panel, title="Data from MSDD", fft_size=512, sample_rate=512) # self.s2f1 = gr.short_to_float() # self.scope = scopesink2.scope_sink_f(self.panel, sample_rate=self.sample_rate*self.fft_size) self.connect (self.u, self.src_fft) #self.connect (self.s2f1, self.scope) vbox.Add (self.src_fft.win, 4, wx.EXPAND) # # if 1: # post_filt_fft = fftsink2.fft_sink_f(self.panel, title="Post Demod", # fft_size=1024, sample_rate=usrp_rate, # y_per_div=10, ref_level=0) # self.connect (self.guts.fm_demod, post_filt_fft) # vbox.Add (post_filt_fft.win, 4, wx.EXPAND) # # if 0: # post_deemph_fft = fftsink2.fft_sink_f(self.panel, title="Post Deemph", # fft_size=512, sample_rate=audio_rate, # y_per_div=10, ref_level=-20) # self.connect (self.guts.deemph, post_deemph_fft) # vbox.Add (post_deemph_fft.win, 4, wx.EXPAND) # control area form at bottom self.myform = myform = form.form() hbox = wx.BoxSizer(wx.HORIZONTAL) hbox.Add((5,0), 0) myform['freq'] = form.float_field( parent=self.panel, sizer=hbox, label="Freq", weight=1, callback=myform.check_input_and_call(_form_set_freq, self._set_status_msg)) hbox.Add((5,0), 0) myform['freq_slider'] = \ form.quantized_slider_field(parent=self.panel, sizer=hbox, weight=3, range=(30e6, 6e9, 1e6), callback=self.set_freq) hbox.Add((5,0), 0) vbox.Add(hbox, 0, wx.EXPAND) hbox = wx.BoxSizer(wx.HORIZONTAL) hbox.Add((5,0), 0) # # myform['volume'] = \ # form.quantized_slider_field(parent=self.panel, sizer=hbox, label="Volume", # weight=3, range=self.volume_range(), # callback=self.set_vol) # hbox.Add((5,0), 1) myform['gain'] = \ form.quantized_slider_field(parent=self.panel, sizer=hbox, label="Gain", weight=3, range=self.gain_range, callback=self.set_gain) hbox.Add((5,0), 0) vbox.Add(hbox, 0, wx.EXPAND) # # try: # self.knob = powermate.powermate(self.frame) # self.rot = 0 # powermate.EVT_POWERMATE_ROTATE (self.frame, self.on_rotate) # powermate.EVT_POWERMATE_BUTTON (self.frame, self.on_button) # except: # print "FYI: No Powermate or Contour Knob found" def on_rotate (self, event): self.rot += event.delta if (self.state == "FREQ"): if self.rot >= 3: self.set_freq(self.freq + .1e6) self.rot -= 3 elif self.rot <=-3: self.set_freq(self.freq - .1e6) self.rot += 3 else: step = self.volume_range()[2] if self.rot >= 3: self.set_vol(self.vol + step) self.rot -= 3 elif self.rot <=-3: self.set_vol(self.vol - step) self.rot += 3 def on_button (self, event): if event.value == 0: # button up return self.rot = 0 if self.state == "FREQ": self.state = "VOL" else: self.state = "FREQ" self.update_status_bar () # # # def set_vol (self, vol): # g = self.volume_range() # self.vol = max(g[0], min(g[1], vol)) # self.volume_control.set_k(10**(self.vol/10)) # self.myform['volume'].set_value(self.vol) # self.update_status_bar () 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.set_rx_freq(0, target_freq); if r: self.freq = target_freq self.myform['freq'].set_value(target_freq) # update displayed value self.myform['freq_slider'].set_value(target_freq) # update displayed value self.update_status_bar() self._set_status_msg("OK", 0) return True self._set_status_msg("Failed", 0) return False def set_gain(self, gain): self.myform['gain'].set_value(gain) # update displayed value self.u.set_pga(0,gain) def update_status_bar (self): msg = "Volume:%r Setting:%s" % (self.vol, self.state) self._set_status_msg(msg, 1) #self.src_fft.set_baseband_freq(self.freq) # # def volume_range(self): # return (-20.0, 0.0, 0.5) if __name__ == '__main__': app = stdgui2.stdapp (wfm_rx_block, "MSDD FFT RX") app.MainLoop ()