#!/usr/bin/env python ################################################## # Gnuradio Python Flow Graph # Title: USRP HRPT Receiver # Generated: Mon Nov 9 07:47:17 2009 ################################################## from gnuradio import eng_notation from gnuradio import gr from gnuradio import noaa from gnuradio import window from gnuradio.eng_option import eng_option from gnuradio.gr import firdes from gnuradio.wxgui import fftsink2 from gnuradio.wxgui import forms from gnuradio.wxgui import scopesink2 from grc_gnuradio import wxgui as grc_wxgui from optparse import OptionParser import ConfigParser import math, os import wx class file_rx_hrpt(grc_wxgui.top_block_gui): def __init__(self, input_filename="usrp.dat", decim=32): grc_wxgui.top_block_gui.__init__(self, title="USRP HRPT Receiver") ################################################## # Parameters ################################################## self.input_filename = input_filename self.decim = decim ################################################## # Variables ################################################## self.sym_rate = sym_rate = 600*1109 self.sample_rate = sample_rate = 64e6/decim self.config_filename = config_filename = os.environ['HOME']+'/.gnuradio/config.conf' self.sps = sps = sample_rate/sym_rate 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('usrp_rx_hrpt', 'pll_alpha') except: saved_pll_alpha = 0.01 self.saved_pll_alpha = saved_pll_alpha self._saved_clock_alpha_config = ConfigParser.ConfigParser() self._saved_clock_alpha_config.read(config_filename) try: saved_clock_alpha = self._saved_clock_alpha_config.getfloat('usrp_rx_hrpt', 'clock_alpha') except: saved_clock_alpha = 0.01 self.saved_clock_alpha = saved_clock_alpha 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('usrp_rx_hrpt', 'filename') except: output_filename = 'frames.hrpt' self.output_filename = output_filename self.max_clock_offset = max_clock_offset = 100e-6 self.max_carrier_offset = max_carrier_offset = 2*math.pi*100e3/sample_rate self.hs = hs = int(sps/2.0) self.clock_alpha = clock_alpha = saved_clock_alpha ################################################## # Notebooks ################################################## self.displays = wx.Notebook(self.GetWin(), style=wx.NB_TOP) self.displays.AddPage(grc_wxgui.Panel(self.displays), "Spectrum") self.displays.AddPage(grc_wxgui.Panel(self.displays), "Demod") self.GridAdd(self.displays, 1, 0, 1, 2) ################################################## # Controls ################################################## _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, 0, 1, 1) _clock_alpha_sizer = wx.BoxSizer(wx.VERTICAL) self._clock_alpha_text_box = forms.text_box( parent=self.GetWin(), sizer=_clock_alpha_sizer, value=self.clock_alpha, callback=self.set_clock_alpha, label="Clock Alpha", converter=forms.float_converter(), proportion=0, ) self._clock_alpha_slider = forms.slider( parent=self.GetWin(), sizer=_clock_alpha_sizer, value=self.clock_alpha, callback=self.set_clock_alpha, minimum=0.0, maximum=0.5, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_clock_alpha_sizer, 0, 1, 1, 1) ################################################## # Blocks ################################################## self.agc = gr.agc_cc(1e-6, 1.0, 1.0, 1.0) self.decoder = noaa.hrpt_decoder(True,False) self.deframer = noaa.hrpt_deframer() self.demod_scope = scopesink2.scope_sink_f( self.displays.GetPage(1).GetWin(), title="Post-Demod", sample_rate=sym_rate*2.0, v_scale=0.5, v_offset=0, t_scale=10.0/sym_rate, ac_couple=False, xy_mode=False, num_inputs=1, ) self.displays.GetPage(1).GridAdd(self.demod_scope.win, 0, 0, 1, 1) self.frame_sink = gr.file_sink(gr.sizeof_short*1, output_filename) self.gr_binary_slicer_fb_0 = gr.binary_slicer_fb() self.gr_clock_recovery_mm_xx_0 = gr.clock_recovery_mm_ff(sps/2.0, clock_alpha**2/4.0, 0.5, clock_alpha, max_clock_offset) self.gr_file_source_0 = gr.file_source(gr.sizeof_short*1, input_filename, False) self.gr_interleaved_short_to_complex_0 = gr.interleaved_short_to_complex() self.gr_moving_average_xx_0 = gr.moving_average_ff(hs, 1.0/hs, 4000) self.pll = noaa.hrpt_pll_cf(pll_alpha, pll_alpha**2/4.0, max_carrier_offset) self.rx_fft = fftsink2.fft_sink_c( self.displays.GetPage(0).GetWin(), baseband_freq=0, y_per_div=5, y_divs=8, ref_level=-5, ref_scale=2.0, sample_rate=sample_rate, fft_size=1024, fft_rate=15, average=True, avg_alpha=0.1, title="RX Spectrum", peak_hold=False, size=(640, 360), ) self.displays.GetPage(0).GridAdd(self.rx_fft.win, 0, 0, 1, 1) self.throttle = gr.throttle(gr.sizeof_short*1, 2*sample_rate) ################################################## # Connections ################################################## self.connect((self.gr_clock_recovery_mm_xx_0, 0), (self.gr_binary_slicer_fb_0, 0)) self.connect((self.deframer, 0), (self.frame_sink, 0)) self.connect((self.deframer, 0), (self.decoder, 0)) self.connect((self.gr_clock_recovery_mm_xx_0, 0), (self.demod_scope, 0)) self.connect((self.gr_moving_average_xx_0, 0), (self.gr_clock_recovery_mm_xx_0, 0)) self.connect((self.pll, 0), (self.gr_moving_average_xx_0, 0)) self.connect((self.agc, 0), (self.pll, 0)) self.connect((self.agc, 0), (self.rx_fft, 0)) self.connect((self.gr_interleaved_short_to_complex_0, 0), (self.agc, 0)) self.connect((self.throttle, 0), (self.gr_interleaved_short_to_complex_0, 0)) self.connect((self.gr_file_source_0, 0), (self.throttle, 0)) self.connect((self.gr_binary_slicer_fb_0, 0), (self.deframer, 0)) def set_input_filename(self, input_filename): self.input_filename = input_filename def set_decim(self, decim): self.decim = decim self.set_sample_rate(64e6/self.decim) def set_sym_rate(self, sym_rate): self.sym_rate = sym_rate self.set_sps(self.sample_rate/self.sym_rate) self.demod_scope.set_sample_rate(self.sym_rate*2.0) def set_sample_rate(self, sample_rate): self.sample_rate = sample_rate self.set_sps(self.sample_rate/self.sym_rate) self.rx_fft.set_sample_rate(self.sample_rate) self.set_max_carrier_offset(2*math.pi*100e3/self.sample_rate) def set_config_filename(self, config_filename): self.config_filename = config_filename self._output_filename_config = ConfigParser.ConfigParser() self._output_filename_config.read(self.config_filename) if not self._output_filename_config.has_section('usrp_rx_hrpt'): self._output_filename_config.add_section('usrp_rx_hrpt') self._output_filename_config.set('usrp_rx_hrpt', 'filename', str(self.output_filename)) self._output_filename_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('usrp_rx_hrpt'): self._saved_pll_alpha_config.add_section('usrp_rx_hrpt') self._saved_pll_alpha_config.set('usrp_rx_hrpt', 'pll_alpha', str(self.pll_alpha)) self._saved_pll_alpha_config.write(open(self.config_filename, 'w')) self._saved_clock_alpha_config = ConfigParser.ConfigParser() self._saved_clock_alpha_config.read(self.config_filename) if not self._saved_clock_alpha_config.has_section('usrp_rx_hrpt'): self._saved_clock_alpha_config.add_section('usrp_rx_hrpt') self._saved_clock_alpha_config.set('usrp_rx_hrpt', 'clock_alpha', str(self.clock_alpha)) self._saved_clock_alpha_config.write(open(self.config_filename, 'w')) def set_sps(self, sps): self.sps = sps self.gr_clock_recovery_mm_xx_0.set_omega(self.sps/2.0) self.set_hs(int(self.sps/2.0)) 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_clock_alpha(self, saved_clock_alpha): self.saved_clock_alpha = saved_clock_alpha self.set_clock_alpha(self.saved_clock_alpha) def set_pll_alpha(self, pll_alpha): self.pll_alpha = pll_alpha self.pll.set_alpha(self.pll_alpha) self.pll.set_beta(self.pll_alpha**2/4.0) 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('usrp_rx_hrpt'): self._saved_pll_alpha_config.add_section('usrp_rx_hrpt') self._saved_pll_alpha_config.set('usrp_rx_hrpt', 'pll_alpha', str(self.pll_alpha)) self._saved_pll_alpha_config.write(open(self.config_filename, 'w')) 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('usrp_rx_hrpt'): self._output_filename_config.add_section('usrp_rx_hrpt') self._output_filename_config.set('usrp_rx_hrpt', 'filename', str(self.output_filename)) self._output_filename_config.write(open(self.config_filename, 'w')) def set_max_clock_offset(self, max_clock_offset): self.max_clock_offset = max_clock_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_hs(self, hs): self.hs = hs self.gr_moving_average_xx_0.set_length_and_scale(self.hs, 1.0/self.hs) def set_clock_alpha(self, clock_alpha): self.clock_alpha = clock_alpha self.gr_clock_recovery_mm_xx_0.set_gain_omega(self.clock_alpha**2/4.0) self.gr_clock_recovery_mm_xx_0.set_gain_mu(self.clock_alpha) self._clock_alpha_slider.set_value(self.clock_alpha) self._clock_alpha_text_box.set_value(self.clock_alpha) self._saved_clock_alpha_config = ConfigParser.ConfigParser() self._saved_clock_alpha_config.read(self.config_filename) if not self._saved_clock_alpha_config.has_section('usrp_rx_hrpt'): self._saved_clock_alpha_config.add_section('usrp_rx_hrpt') self._saved_clock_alpha_config.set('usrp_rx_hrpt', 'clock_alpha', str(self.clock_alpha)) self._saved_clock_alpha_config.write(open(self.config_filename, 'w')) if __name__ == '__main__': parser = OptionParser(option_class=eng_option, usage="%prog: [options]") parser.add_option("-F", "--input-filename", dest="input_filename", type="string", default="usrp.dat", help="Set usrp.dat [default=%default]") parser.add_option("-d", "--decim", dest="decim", type="intx", default=32, help="Set decim [default=%default]") (options, args) = parser.parse_args() tb = file_rx_hrpt(input_filename=options.input_filename, decim=options.decim) tb.Run(True)