Hello.Sorry about that.Here is the generated code with a few of our modifications at the end.
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#!/usr/bin/env python
##################################################
# Gnuradio Python Flow Graph
# Title: Fm Example
# Generated: Tue Jan 6 10:37:52 2015
##################################################
from gnuradio import analog
from gnuradio import audio
from gnuradio import eng_notation
from gnuradio import filter
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 time
import wx
class fm_example(grc_wxgui.top_block_gui):
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="Fm Example")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 4e6
#self.freq = freq = 88.1e6
self.freq = freq
##################################################
# Blocks
##################################################
self.notebook_0 = self.notebook_0 = wx.Notebook(self.GetWin(), style=wx.NB_LEFT)
self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0), "RF Spectrum")
self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0), "Demod Spectrum")
self.Add(self.notebook_0)
self._freq_text_box = forms.text_box(
parent=self.GetWin(),
value=self.freq,
callback=self.set_freq,
label='freq',
converter=forms.float_converter(),
)
self.Add(self._freq_text_box)
self.wxgui_fftsink2_1 = fftsink2.fft_sink_f(
self.notebook_0.GetPage(1).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=600e3,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT Plot",
peak_hold=False,
win=window.rectangular,
)
self.notebook_0.GetPage(1).Add(self.wxgui_fftsink2_1.win)
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.notebook_0.GetPage(0).GetWin(),
baseband_freq=freq,
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.notebook_0.GetPage(0).Add(self.wxgui_fftsink2_0.win)
self.uhd_usrp_source_0 = uhd.usrp_source(
",".join(("serial=2R2CU0U1", "")),
uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.uhd_usrp_source_0.set_subdev_spec("A:0", 0)
self.uhd_usrp_source_0.set_samp_rate(samp_rate)
self.uhd_usrp_source_0.set_center_freq(freq, 0)
self.uhd_usrp_source_0.set_gain(15, 0)
self.uhd_usrp_source_0.set_antenna("RX2", 0)
self.rational_resampler_xxx_0 = filter.rational_resampler_fff(
interpolation=240,
decimation=48,
taps=None,
fractional_bw=None,
)
self.low_pass_filter_0 = filter.fir_filter_ccf(20, firdes.low_pass(
1, samp_rate, 100e3, 10e3, firdes.WIN_HANN, 6.76))
self.audio_sink_0 = audio.sink(48000, "", False)
self.analog_wfm_rcv_0 = analog.wfm_rcv(
quad_rate=600e3,
audio_decimation=20,
)
##################################################
# Connections
##################################################
self.connect((self.uhd_usrp_source_0, 0), (self.wxgui_fftsink2_0, 0))
self.connect((self.uhd_usrp_source_0, 0), (self.low_pass_filter_0, 0))
self.connect((self.analog_wfm_rcv_0, 0), (self.wxgui_fftsink2_1, 0))
self.connect((self.low_pass_filter_0, 0), (self.analog_wfm_rcv_0, 0))
self.connect((self.rational_resampler_xxx_0, 0), (self.audio_sink_0, 0))
self.connect((self.analog_wfm_rcv_0, 0), (self.rational_resampler_xxx_0, 0))
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.wxgui_fftsink2_0.set_sample_rate(self.samp_rate)
self.uhd_usrp_source_0.set_samp_rate(self.samp_rate)
self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.samp_rate, 100e3, 10e3, firdes.WIN_HANN, 6.76))
def get_freq(self):
return self.freq
def set_freq(self, freq):
self.freq = freq
self.wxgui_fftsink2_0.set_baseband_freq(self.freq)
self.uhd_usrp_source_0.set_center_freq(self.freq, 0)
self._freq_text_box.set_value(self.freq)
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]")
(options, args) = parser.parse_args()
freq = 88.1e6
tb1 = fm_example()
tb1.Start(True)
tb1.Wait()
freq = freq+200e3
tb2 = fm_example()
tb2.Start(True)
tb2.Wait()
freq = freq+200e3
tb3 = fm_example()
tb3.Start(True)
tb3.Wait()
freq = freq+200e3
tb4 = fm_example()
tb4.Start(True)
tb4.Wait()
freq = freq+200e3
tb5 = fm_example()
tb5.Start(True)
tb5.Wait()
freq = freq+200e3
__________________________________________________________________________
Actually,we didn't type Start and Wait in lowercase letters since when we generated the code,
the first letters were already capitalized.
error.png