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#!/usr/bin/env python
##################################################
# Gnuradio Python Flow Graph
# Title: Gsm Receiver Usrp Test
# Generated: Wed Aug 6 15:18:47 2014
##################################################
from gnuradio import eng_notation
from gnuradio import gr
from gnuradio import uhd
from gnuradio import wxgui
from gnuradio.eng_option import eng_option
from gnuradio.fft import window
from gnuradio.filter import firdes
from gnuradio.wxgui import fftsink2
from gnuradio.wxgui import forms
from grc_gnuradio import wxgui as grc_wxgui
from optparse import OptionParser
import gsm
import time
import wx
class gsm_receiver_usrp_test(grc_wxgui.top_block_gui):
def __init__(self, length=30):
grc_wxgui.top_block_gui.__init__(self, title="Gsm Receiver Usrp Test")
_icon_path = "/home/piotr/.local/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Parameters
##################################################
self.length = length
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 100e6/100
self.g = g = 28
self.fc = fc = 937e6
##################################################
# Blocks
##################################################
_g_sizer = wx.BoxSizer(wx.VERTICAL)
self._g_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_g_sizer,
value=self.g,
callback=self.set_g,
label='g',
converter=forms.float_converter(),
proportion=0,
)
self._g_slider = forms.slider(
parent=self.GetWin(),
sizer=_g_sizer,
value=self.g,
callback=self.set_g,
minimum=0,
maximum=50,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.Add(_g_sizer)
_fc_sizer = wx.BoxSizer(wx.VERTICAL)
self._fc_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_fc_sizer,
value=self.fc,
callback=self.set_fc,
label='fc',
converter=forms.float_converter(),
proportion=0,
)
self._fc_slider = forms.slider(
parent=self.GetWin(),
sizer=_fc_sizer,
value=self.fc,
callback=self.set_fc,
minimum=900e6,
maximum=1000e6,
num_steps=500,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.Add(_fc_sizer)
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=fc,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT Plot",
peak_hold=False,
)
self.GridAdd(self.wxgui_fftsink2_0.win, 1, 1, 1, 1)
self.uhd_usrp_source_0 = uhd.usrp_source(
",".join(("addr=192.168.9.2", "")),
uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.uhd_usrp_source_0.set_clock_source("external", 0)
self.uhd_usrp_source_0.set_samp_rate(samp_rate)
self.uhd_usrp_source_0.set_center_freq(fc, 0)
self.uhd_usrp_source_0.set_gain(g, 0)
self.gsm_receiver_hier_0 = gsm.receiver_hier(samp_rate, 4)
self.gsm_get_bcch_or_ccch_bursts_0 = gsm.get_bcch_or_ccch_bursts(2)
self.gsm_control_channels_decoder_0 = gsm.control_channels_decoder()
##################################################
# Connections
##################################################
self.connect((self.uhd_usrp_source_0, 0), (self.gsm_receiver_hier_0, 0))
self.connect((self.uhd_usrp_source_0, 0), (self.wxgui_fftsink2_0, 0))
##################################################
# Asynch Message Connections
##################################################
self.msg_connect(self.gsm_receiver_hier_0, "bursts", self.gsm_get_bcch_or_ccch_bursts_0, "bursts")
self.msg_connect(self.gsm_get_bcch_or_ccch_bursts_0, "bursts", self.gsm_control_channels_decoder_0, "bursts")
def get_length(self):
return self.length
def set_length(self, length):
self.length = length
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.uhd_usrp_source_0.set_samp_rate(self.samp_rate)
self.wxgui_fftsink2_0.set_sample_rate(self.samp_rate)
def get_g(self):
return self.g
def set_g(self, g):
self.g = g
self._g_slider.set_value(self.g)
self._g_text_box.set_value(self.g)
self.uhd_usrp_source_0.set_gain(self.g, 0)
def get_fc(self):
return self.fc
def set_fc(self, fc):
self.fc = fc
self.uhd_usrp_source_0.set_center_freq(self.fc, 0)
self.wxgui_fftsink2_0.set_baseband_freq(self.fc)
self._fc_slider.set_value(self.fc)
self._fc_text_box.set_value(self.fc)
if __name__ == '__main__':
import ctypes
import sys
if sys.platform.startswith('linux'):
try:
x11 = ctypes.cdll.LoadLibrary('libX11.so')
x11.XInitThreads()
except:
print "Warning: failed to XInitThreads()"
parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
parser.add_option("", "--length", dest="length", type="eng_float", default=eng_notation.num_to_str(30),
help="Set length [default=%default]")
(options, args) = parser.parse_args()
tb = gsm_receiver_usrp_test(length=options.length)
tb.Start(True)
tb.Wait()
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