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#!/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)
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