#!/usr/bin/env python ################################################## # Gnuradio Python Flow Graph # Title: USRP HRPT Receiver # Generated: Sun Sep 27 13:32:48 2009 ################################################## from gnuradio import eng_notation from gnuradio import gr from gnuradio import noaa from gnuradio.eng_option import eng_option from gnuradio.gr import firdes from gnuradio.wxgui import forms from gnuradio.wxgui import scopesink2 from grc_gnuradio import usrp as grc_usrp from grc_gnuradio import wxgui as grc_wxgui from optparse import OptionParser import ConfigParser import math import wx class usrp_rx_hrpt2(grc_wxgui.top_block_gui): def __init__(self): grc_wxgui.top_block_gui.__init__(self, title="USRP HRPT Receiver") ################################################## # Variables ################################################## self.config_filename = config_filename = 'usrp_rx_hrpt.cfg' self._decim_config = ConfigParser.ConfigParser() self._decim_config.read(config_filename) try: decim = self._decim_config.getfloat('usrp', 'decim') except: decim = 16 self.decim = decim self.sym_rate = sym_rate = 600*1109 self.sample_rate = sample_rate = 64e6/decim self.sps = sps = sample_rate/sym_rate self._side_config = ConfigParser.ConfigParser() self._side_config.read(config_filename) try: side = self._side_config.get('usrp', 'side') except: side = 'A' self.side = side self._saved_sync_alpha_config = ConfigParser.ConfigParser() self._saved_sync_alpha_config.read(config_filename) try: saved_sync_alpha = self._saved_sync_alpha_config.getfloat('demod', 'sync_alpha') except: saved_sync_alpha = 0.05 self.saved_sync_alpha = saved_sync_alpha self._saved_pll_alpha_config = ConfigParser.ConfigParser() self._saved_pll_alpha_config.read(config_filename) try: saved_pll_alpha = self._saved_pll_alpha_config.getfloat('demod', 'pll_alpha') except: saved_pll_alpha = 0.05 self.saved_pll_alpha = saved_pll_alpha self._saved_gain_config = ConfigParser.ConfigParser() self._saved_gain_config.read(config_filename) try: saved_gain = self._saved_gain_config.getfloat('usrp', 'gain') except: saved_gain = 35 self.saved_gain = saved_gain self._saved_freq_config = ConfigParser.ConfigParser() self._saved_freq_config.read(config_filename) try: saved_freq = self._saved_freq_config.getfloat('usrp', 'freq') except: saved_freq = 1698e6 self.saved_freq = saved_freq self.hs = hs = int(sps/2.0) self.sync_alpha = sync_alpha = saved_sync_alpha self.side_text = side_text = side self.pll_alpha = pll_alpha = saved_pll_alpha self._output_filename_config = ConfigParser.ConfigParser() self._output_filename_config.read(config_filename) try: output_filename = self._output_filename_config.get('output', 'filename') except: output_filename = 'frames.dat' self.output_filename = output_filename self.mf_taps = mf_taps = [-0.5/hs,]*hs+[0.5/hs,]*hs self.max_sync_offset = max_sync_offset = 0.01 self.max_carrier_offset = max_carrier_offset = 2*math.pi*100e3/sample_rate self.gain = gain = saved_gain self.freq = freq = saved_freq self.decim_text = decim_text = decim ################################################## # Controls ################################################## _sync_alpha_sizer = wx.BoxSizer(wx.VERTICAL) self._sync_alpha_text_box = forms.text_box( parent=self.GetWin(), sizer=_sync_alpha_sizer, value=self.sync_alpha, callback=self.set_sync_alpha, label="SYNC Alpha", converter=forms.float_converter(), proportion=0, ) self._sync_alpha_slider = forms.slider( parent=self.GetWin(), sizer=_sync_alpha_sizer, value=self.sync_alpha, callback=self.set_sync_alpha, minimum=0.0, maximum=0.5, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_sync_alpha_sizer, 0, 3, 1, 1) self._side_text_static_text = forms.static_text( parent=self.GetWin(), value=self.side_text, callback=self.set_side_text, label="USRP Side", converter=forms.str_converter(), ) self.GridAdd(self._side_text_static_text, 1, 0, 1, 1) _pll_alpha_sizer = wx.BoxSizer(wx.VERTICAL) self._pll_alpha_text_box = forms.text_box( parent=self.GetWin(), sizer=_pll_alpha_sizer, value=self.pll_alpha, callback=self.set_pll_alpha, label="PLL Alpha", converter=forms.float_converter(), proportion=0, ) self._pll_alpha_slider = forms.slider( parent=self.GetWin(), sizer=_pll_alpha_sizer, value=self.pll_alpha, callback=self.set_pll_alpha, minimum=0.0, maximum=0.5, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_pll_alpha_sizer, 0, 2, 1, 1) _gain_sizer = wx.BoxSizer(wx.VERTICAL) self._gain_text_box = forms.text_box( parent=self.GetWin(), sizer=_gain_sizer, value=self.gain, callback=self.set_gain, label="RX Gain", converter=forms.float_converter(), proportion=0, ) self._gain_slider = forms.slider( parent=self.GetWin(), sizer=_gain_sizer, value=self.gain, callback=self.set_gain, minimum=0, maximum=100, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_gain_sizer, 0, 1, 1, 1) self._freq_text_box = forms.text_box( parent=self.GetWin(), value=self.freq, callback=self.set_freq, label="Frequency", converter=forms.float_converter(), ) self.GridAdd(self._freq_text_box, 0, 0, 1, 1) self._decim_text_static_text = forms.static_text( parent=self.GetWin(), value=self.decim_text, callback=self.set_decim_text, label="Decimation", converter=forms.float_converter(), ) self.GridAdd(self._decim_text_static_text, 1, 1, 1, 1) ################################################## # Blocks ################################################## self.agc = gr.agc_cc(1e-6, 1.0, 1.0, 1.0) self.decoder = noaa.hrpt_decoder() self.deframer = noaa.hrpt_deframer() self.frame_sink = gr.file_sink(gr.sizeof_short*1, output_filename) self.gr_fir_filter_xxx_0 = gr.fir_filter_ccc(1, (mf_taps)) self.pll = noaa.hrpt_pll_cf(pll_alpha, pll_alpha**2/4.0, max_carrier_offset) self.pll_scope = scopesink2.scope_sink_f( self.GetWin(), title="Demod Waveform", sample_rate=sample_rate, v_scale=0.5, t_scale=20.0/sample_rate, ac_couple=False, xy_mode=False, num_inputs=1, ) self.GridAdd(self.pll_scope.win, 2, 0, 1, 4) self.sync = noaa.hrpt_sync_fb(sync_alpha, sync_alpha**2/4.0, sps, max_sync_offset) self.usrp_source = grc_usrp.simple_source_c(which=0, side=side, rx_ant="RXA") self.usrp_source.set_decim_rate(decim) self.usrp_source.set_frequency(freq, verbose=True) self.usrp_source.set_gain(gain) ################################################## # Connections ################################################## self.connect((self.gr_fir_filter_xxx_0, 0), (self.pll, 0)) self.connect((self.agc, 0), (self.gr_fir_filter_xxx_0, 0)) self.connect((self.usrp_source, 0), (self.agc, 0)) self.connect((self.deframer, 0), (self.decoder, 0)) self.connect((self.pll, 0), (self.pll_scope, 0)) self.connect((self.pll, 0), (self.sync, 0)) self.connect((self.sync, 0), (self.deframer, 0)) self.connect((self.deframer, 0), (self.frame_sink, 0)) def set_config_filename(self, config_filename): self.config_filename = config_filename self._side_config = ConfigParser.ConfigParser() self._side_config.read(self.config_filename) if not self._side_config.has_section('usrp'): self._side_config.add_section('usrp') self._side_config.set('usrp', 'side', str(self.side)) self._side_config.write(open(self.config_filename, 'w')) self._decim_config = ConfigParser.ConfigParser() self._decim_config.read(self.config_filename) if not self._decim_config.has_section('usrp'): self._decim_config.add_section('usrp') self._decim_config.set('usrp', 'decim', str(self.decim)) self._decim_config.write(open(self.config_filename, 'w')) self._saved_freq_config = ConfigParser.ConfigParser() self._saved_freq_config.read(self.config_filename) if not self._saved_freq_config.has_section('usrp'): self._saved_freq_config.add_section('usrp') self._saved_freq_config.set('usrp', 'freq', str(self.freq)) self._saved_freq_config.write(open(self.config_filename, 'w')) self._saved_gain_config = ConfigParser.ConfigParser() self._saved_gain_config.read(self.config_filename) if not self._saved_gain_config.has_section('usrp'): self._saved_gain_config.add_section('usrp') self._saved_gain_config.set('usrp', 'gain', str(self.gain)) self._saved_gain_config.write(open(self.config_filename, 'w')) self._saved_pll_alpha_config = ConfigParser.ConfigParser() self._saved_pll_alpha_config.read(self.config_filename) if not self._saved_pll_alpha_config.has_section('demod'): self._saved_pll_alpha_config.add_section('demod') self._saved_pll_alpha_config.set('demod', 'pll_alpha', str(self.pll_alpha)) self._saved_pll_alpha_config.write(open(self.config_filename, 'w')) self._saved_sync_alpha_config = ConfigParser.ConfigParser() self._saved_sync_alpha_config.read(self.config_filename) if not self._saved_sync_alpha_config.has_section('demod'): self._saved_sync_alpha_config.add_section('demod') self._saved_sync_alpha_config.set('demod', 'sync_alpha', str(self.sync_alpha)) self._saved_sync_alpha_config.write(open(self.config_filename, 'w')) self._output_filename_config = ConfigParser.ConfigParser() self._output_filename_config.read(self.config_filename) if not self._output_filename_config.has_section('output'): self._output_filename_config.add_section('output') self._output_filename_config.set('output', 'filename', str(self.output_filename)) self._output_filename_config.write(open(self.config_filename, 'w')) def set_decim(self, decim): self.decim = decim self.set_sample_rate(64e6/self.decim) self._decim_config = ConfigParser.ConfigParser() self._decim_config.read(self.config_filename) if not self._decim_config.has_section('usrp'): self._decim_config.add_section('usrp') self._decim_config.set('usrp', 'decim', str(self.decim)) self._decim_config.write(open(self.config_filename, 'w')) self.set_decim_text(self.decim) self.usrp_source.set_decim_rate(self.decim) def set_sym_rate(self, sym_rate): self.sym_rate = sym_rate self.set_sps(self.sample_rate/self.sym_rate) def set_sample_rate(self, sample_rate): self.sample_rate = sample_rate self.set_max_carrier_offset(2*math.pi*100e3/self.sample_rate) self.set_sps(self.sample_rate/self.sym_rate) self.pll_scope.set_sample_rate(self.sample_rate) def set_sps(self, sps): self.sps = sps self.set_hs(int(self.sps/2.0)) def set_side(self, side): self.side = side self.set_side_text(self.side) self._side_config = ConfigParser.ConfigParser() self._side_config.read(self.config_filename) if not self._side_config.has_section('usrp'): self._side_config.add_section('usrp') self._side_config.set('usrp', 'side', str(self.side)) self._side_config.write(open(self.config_filename, 'w')) def set_saved_sync_alpha(self, saved_sync_alpha): self.saved_sync_alpha = saved_sync_alpha self.set_sync_alpha(self.saved_sync_alpha) def set_saved_pll_alpha(self, saved_pll_alpha): self.saved_pll_alpha = saved_pll_alpha self.set_pll_alpha(self.saved_pll_alpha) def set_saved_gain(self, saved_gain): self.saved_gain = saved_gain self.set_gain(self.saved_gain) def set_saved_freq(self, saved_freq): self.saved_freq = saved_freq self.set_freq(self.saved_freq) def set_hs(self, hs): self.hs = hs self.set_mf_taps([-0.5/self.hs,]*self.hs+[0.5/self.hs,]*self.hs) def set_sync_alpha(self, sync_alpha): self.sync_alpha = sync_alpha self._sync_alpha_slider.set_value(self.sync_alpha) self._sync_alpha_text_box.set_value(self.sync_alpha) self._saved_sync_alpha_config = ConfigParser.ConfigParser() self._saved_sync_alpha_config.read(self.config_filename) if not self._saved_sync_alpha_config.has_section('demod'): self._saved_sync_alpha_config.add_section('demod') self._saved_sync_alpha_config.set('demod', 'sync_alpha', str(self.sync_alpha)) self._saved_sync_alpha_config.write(open(self.config_filename, 'w')) self.sync.set_alpha(self.sync_alpha) self.sync.set_beta(self.sync_alpha**2/4.0) def set_side_text(self, side_text): self.side_text = side_text self._side_text_static_text.set_value(self.side_text) def set_pll_alpha(self, pll_alpha): self.pll_alpha = pll_alpha self._pll_alpha_slider.set_value(self.pll_alpha) self._pll_alpha_text_box.set_value(self.pll_alpha) self._saved_pll_alpha_config = ConfigParser.ConfigParser() self._saved_pll_alpha_config.read(self.config_filename) if not self._saved_pll_alpha_config.has_section('demod'): self._saved_pll_alpha_config.add_section('demod') self._saved_pll_alpha_config.set('demod', 'pll_alpha', str(self.pll_alpha)) self._saved_pll_alpha_config.write(open(self.config_filename, 'w')) self.pll.set_alpha(self.pll_alpha) self.pll.set_beta(self.pll_alpha**2/4.0) def set_output_filename(self, output_filename): self.output_filename = output_filename self._output_filename_config = ConfigParser.ConfigParser() self._output_filename_config.read(self.config_filename) if not self._output_filename_config.has_section('output'): self._output_filename_config.add_section('output') self._output_filename_config.set('output', 'filename', str(self.output_filename)) self._output_filename_config.write(open(self.config_filename, 'w')) def set_mf_taps(self, mf_taps): self.mf_taps = mf_taps self.gr_fir_filter_xxx_0.set_taps((self.mf_taps)) def set_max_sync_offset(self, max_sync_offset): self.max_sync_offset = max_sync_offset self.sync.set_max_offset(self.max_sync_offset) def set_max_carrier_offset(self, max_carrier_offset): self.max_carrier_offset = max_carrier_offset self.pll.set_max_offset(self.max_carrier_offset) def set_gain(self, gain): self.gain = gain self._gain_slider.set_value(self.gain) self._gain_text_box.set_value(self.gain) self._saved_gain_config = ConfigParser.ConfigParser() self._saved_gain_config.read(self.config_filename) if not self._saved_gain_config.has_section('usrp'): self._saved_gain_config.add_section('usrp') self._saved_gain_config.set('usrp', 'gain', str(self.gain)) self._saved_gain_config.write(open(self.config_filename, 'w')) self.usrp_source.set_gain(self.gain) def set_freq(self, freq): self.freq = freq self._freq_text_box.set_value(self.freq) self._saved_freq_config = ConfigParser.ConfigParser() self._saved_freq_config.read(self.config_filename) if not self._saved_freq_config.has_section('usrp'): self._saved_freq_config.add_section('usrp') self._saved_freq_config.set('usrp', 'freq', str(self.freq)) self._saved_freq_config.write(open(self.config_filename, 'w')) self.usrp_source.set_frequency(self.freq) def set_decim_text(self, decim_text): self.decim_text = decim_text self._decim_text_static_text.set_value(self.decim_text) if __name__ == '__main__': parser = OptionParser(option_class=eng_option, usage="%prog: [options]") (options, args) = parser.parse_args() if gr.enable_realtime_scheduling() != gr.RT_OK: print "Error: failed to enable realtime scheduling." tb = usrp_rx_hrpt2() tb.Run(True)