diff options
Diffstat (limited to 'gr-msdd6000/src/python-examples/msdd_rcv.py')
| -rwxr-xr-x | gr-msdd6000/src/python-examples/msdd_rcv.py | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/gr-msdd6000/src/python-examples/msdd_rcv.py b/gr-msdd6000/src/python-examples/msdd_rcv.py new file mode 100755 index 0000000000..cc2f3e4a32 --- /dev/null +++ b/gr-msdd6000/src/python-examples/msdd_rcv.py @@ -0,0 +1,287 @@ +#!/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 () |