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#!/usr/bin/env python
##################################################
# Gnuradio Python Flow Graph
# Title: USRP HRPT Receiver
# Generated: Sun Sep 20 19:09:57 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 fftsink2
from gnuradio.wxgui import forms
from gnuradio.wxgui import scopesink2
from grc_gnuradio import wxgui as grc_wxgui
from optparse import OptionParser
import math
import wx
class usrp_rx_hrpt(grc_wxgui.top_block_gui):
def __init__(self, filename="", decim=16):
grc_wxgui.top_block_gui.__init__(self, title="USRP HRPT Receiver")
##################################################
# Parameters
##################################################
self.filename = filename
self.decim = decim
##################################################
# Variables
##################################################
self.sym_rate = sym_rate = 600*1109
self.sample_rate = sample_rate = 64e6/decim
self.sps = sps = sample_rate/sym_rate
self.sync_alpha = sync_alpha = 0.1
self.pll_alpha = pll_alpha = 0.005
self.max_sync_offset = max_sync_offset = 0.01
self.max_carrier_offset = max_carrier_offset = 2*math.pi*100e3/sample_rate
self.hs = hs = int(sps/2.0)
##################################################
# Notebooks
##################################################
self.displays = wx.Notebook(self.GetWin(), style=wx.NB_TOP)
self.displays.AddPage(grc_wxgui.Panel(self.displays), "RX")
self.displays.AddPage(grc_wxgui.Panel(self.displays), "PLL/SYNC")
self.GridAdd(self.displays, 1, 0, 1, 2)
##################################################
# 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=500,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_sync_alpha_sizer, 0, 1, 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=500,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_pll_alpha_sizer, 0, 0, 1, 1)
##################################################
# Blocks
##################################################
self.agr = gr.agc_cc(1e-6, 1.0, 1.0, 1.0)
self.gr_deinterleave_0 = gr.deinterleave(gr.sizeof_float*1)
self.gr_file_sink_1 = gr.file_sink(gr.sizeof_short*1, "frames.dat")
self.gr_file_source_0 = gr.file_source(gr.sizeof_short*1, "filename", False)
self.gr_float_to_complex_0 = gr.float_to_complex(1)
self.gr_short_to_float_0 = gr.short_to_float()
self.matched_filter = gr.moving_average_cc(hs, 1.0/hs, 4000)
self.noaa_hrpt_deframer_0 = noaa.hrpt_deframer()
self.noaa_hrpt_pll_cf_0 = noaa.hrpt_pll_cf(pll_alpha, pll_alpha**2/4.0, max_carrier_offset)
self.noaa_hrpt_sync_fb_0 = noaa.hrpt_sync_fb(sync_alpha, sync_alpha**2/4.0, sps, max_sync_offset)
self.rx_fftsink = fftsink2.fft_sink_c(
self.displays.GetPage(0).GetWin(),
baseband_freq=1698e6,
y_per_div=5,
y_divs=8,
ref_level=-5,
ref_scale=2.0,
sample_rate=sample_rate,
fft_size=1024,
fft_rate=30,
average=True,
avg_alpha=0.1,
title="RX Spectrum",
peak_hold=False,
)
self.displays.GetPage(0).GridAdd(self.rx_fftsink.win, 0, 0, 1, 1)
self.throttle = gr.throttle(gr.sizeof_gr_complex*1, sample_rate)
self.wxgui_scopesink2_0 = scopesink2.scope_sink_c(
self.displays.GetPage(0).GetWin(),
title="RX Waveform",
sample_rate=sample_rate,
v_scale=0,
t_scale=20.0/sample_rate,
ac_couple=False,
xy_mode=False,
num_inputs=1,
)
self.displays.GetPage(0).GridAdd(self.wxgui_scopesink2_0.win, 1, 0, 1, 1)
self.wxgui_scopesink2_0_0 = scopesink2.scope_sink_f(
self.displays.GetPage(1).GetWin(),
title="Post-PLL",
sample_rate=sample_rate,
v_scale=0.5,
t_scale=20.0/sample_rate,
ac_couple=False,
xy_mode=False,
num_inputs=1,
)
self.displays.GetPage(1).GridAdd(self.wxgui_scopesink2_0_0.win, 0, 0, 1, 1)
##################################################
# Connections
##################################################
self.connect((self.throttle, 0), (self.agr, 0))
self.connect((self.noaa_hrpt_deframer_0, 0), (self.gr_file_sink_1, 0))
self.connect((self.noaa_hrpt_sync_fb_0, 0), (self.noaa_hrpt_deframer_0, 0))
self.connect((self.noaa_hrpt_pll_cf_0, 0), (self.noaa_hrpt_sync_fb_0, 0))
self.connect((self.noaa_hrpt_pll_cf_0, 0), (self.wxgui_scopesink2_0_0, 0))
self.connect((self.agr, 0), (self.wxgui_scopesink2_0, 0))
self.connect((self.agr, 0), (self.rx_fftsink, 0))
self.connect((self.agr, 0), (self.matched_filter, 0))
self.connect((self.matched_filter, 0), (self.noaa_hrpt_pll_cf_0, 0))
self.connect((self.gr_float_to_complex_0, 0), (self.throttle, 0))
self.connect((self.gr_short_to_float_0, 0), (self.gr_deinterleave_0, 0))
self.connect((self.gr_deinterleave_0, 1), (self.gr_float_to_complex_0, 1))
self.connect((self.gr_deinterleave_0, 0), (self.gr_float_to_complex_0, 0))
self.connect((self.gr_file_source_0, 0), (self.gr_short_to_float_0, 0))
def set_filename(self, filename):
self.filename = 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)
def set_sample_rate(self, sample_rate):
self.sample_rate = sample_rate
self.wxgui_scopesink2_0_0.set_sample_rate(self.sample_rate)
self.wxgui_scopesink2_0.set_sample_rate(self.sample_rate)
self.rx_fftsink.set_sample_rate(self.sample_rate)
self.set_max_carrier_offset(2*math.pi*100e3/self.sample_rate)
self.set_sps(self.sample_rate/self.sym_rate)
def set_sps(self, sps):
self.sps = sps
self.set_hs(int(self.sps/2.0))
def set_sync_alpha(self, sync_alpha):
self.sync_alpha = sync_alpha
self.noaa_hrpt_sync_fb_0.set_alpha(self.sync_alpha)
self.noaa_hrpt_sync_fb_0.set_beta(self.sync_alpha**2/4.0)
self._sync_alpha_slider.set_value(self.sync_alpha)
self._sync_alpha_text_box.set_value(self.sync_alpha)
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.noaa_hrpt_pll_cf_0.set_alpha(self.pll_alpha)
self.noaa_hrpt_pll_cf_0.set_beta(self.pll_alpha**2/4.0)
def set_max_sync_offset(self, max_sync_offset):
self.max_sync_offset = max_sync_offset
self.noaa_hrpt_sync_fb_0.set_max_offset(self.max_sync_offset)
def set_max_carrier_offset(self, max_carrier_offset):
self.max_carrier_offset = max_carrier_offset
self.noaa_hrpt_pll_cf_0.set_max_offset(self.max_carrier_offset)
def set_hs(self, hs):
self.hs = hs
self.matched_filter.set_length_and_scale(self.hs, 1.0/self.hs)
if __name__ == '__main__':
parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
parser.add_option("-f", "--filename", dest="filename", type="string", default="",
help="Set Filename [default=%default]")
parser.add_option("-d", "--decim", dest="decim", type="intx", default=16,
help="Set Decimation [default=%default]")
(options, args) = parser.parse_args()
tb = usrp_rx_hrpt(filename=options.filename, decim=options.decim)
tb.Run(True)
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