/
decoder_433MHz.py
executable file
·247 lines (219 loc) · 9.34 KB
/
decoder_433MHz.py
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#!/usr/bin/env python2
##################################################
# GNU Radio Python Flow Graph
# Title: Decoder 433Mhz
# Generated: Wed Mar 29 16:22:01 2017
##################################################
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()"
from gnuradio import blocks
from gnuradio import eng_notation
from gnuradio import filter
from gnuradio import gr
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 gnuradio.wxgui import numbersink2
from grc_gnuradio import wxgui as grc_wxgui
from optparse import OptionParser
import osmosdr
import time
import wx
class decoder_433MHz(grc_wxgui.top_block_gui):
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="Decoder 433Mhz")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Variables
##################################################
self.target_rate_IM = target_rate_IM = 50000
self.target_rate = target_rate = 1200
self.samp_rate = samp_rate = 1000000
self.xlate_offset = xlate_offset = -100000
self.variable_static_text_0 = variable_static_text_0 = target_rate
self.samp_per_sym = samp_per_sym = 5
self.gain = gain = 1
self.firdes_tap = firdes_tap = firdes.low_pass(1, samp_rate, 2000, target_rate_IM/4, firdes.WIN_HAMMING, 6.76)
##################################################
# Blocks
##################################################
_xlate_offset_sizer = wx.BoxSizer(wx.VERTICAL)
self._xlate_offset_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_xlate_offset_sizer,
value=self.xlate_offset,
callback=self.set_xlate_offset,
label="xlate_offset",
converter=forms.float_converter(),
proportion=0,
)
self._xlate_offset_slider = forms.slider(
parent=self.GetWin(),
sizer=_xlate_offset_sizer,
value=self.xlate_offset,
callback=self.set_xlate_offset,
minimum=-samp_rate/2,
maximum=samp_rate/2,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_xlate_offset_sizer, 2, 2, 1, 1)
_gain_sizer = wx.BoxSizer(wx.VERTICAL)
self._gain_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_gain_sizer,
value=self.gain,
callback=self.set_gain,
label="gain",
converter=forms.float_converter(),
proportion=0,
)
self._gain_slider = forms.slider(
parent=self.GetWin(),
sizer=_gain_sizer,
value=self.gain,
callback=self.set_gain,
minimum=0.01,
maximum=10,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_gain_sizer, 3, 2, 1, 1)
self.wxgui_numbersink2_0 = numbersink2.number_sink_f(
self.GetWin(),
unit="Units",
minval=0,
maxval=10,
factor=1.0,
decimal_places=10,
ref_level=0,
sample_rate=target_rate*samp_per_sym,
number_rate=15,
average=False,
avg_alpha=None,
label="Max level",
peak_hold=True,
show_gauge=True,
)
self.GridAdd(self.wxgui_numbersink2_0.win, 4, 2, 1, 1)
self.wxgui_fftsink2_1 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=target_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT Plot",
peak_hold=True,
)
self.GridAdd(self.wxgui_fftsink2_1.win, 1, 2, 1, 1)
self._variable_static_text_0_static_text = forms.static_text(
parent=self.GetWin(),
value=self.variable_static_text_0,
callback=self.set_variable_static_text_0,
label="Sample rate out (target_rate * samp_pre_sym)",
converter=forms.float_converter(),
)
self.GridAdd(self._variable_static_text_0_static_text, 6, 2, 1, 1)
self.osmosdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + "" )
self.osmosdr_source_0.set_sample_rate(samp_rate)
self.osmosdr_source_0.set_center_freq(434e6, 0)
self.osmosdr_source_0.set_freq_corr(0, 0)
self.osmosdr_source_0.set_dc_offset_mode(0, 0)
self.osmosdr_source_0.set_iq_balance_mode(0, 0)
self.osmosdr_source_0.set_gain_mode(False, 0)
self.osmosdr_source_0.set_gain(10, 0)
self.osmosdr_source_0.set_if_gain(20, 0)
self.osmosdr_source_0.set_bb_gain(20, 0)
self.osmosdr_source_0.set_antenna("", 0)
self.osmosdr_source_0.set_bandwidth(0, 0)
self.freq_xlating_fir_filter_xxx_1 = filter.freq_xlating_fir_filter_ccc(int(samp_rate/target_rate_IM), (firdes_tap), xlate_offset, samp_rate)
self.fractional_resampler_xx_0 = filter.fractional_resampler_cc(0, (target_rate_IM)/(target_rate*samp_per_sym))
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vff((gain, ))
self.blocks_file_sink_0 = blocks.file_sink(gr.sizeof_float*1, "/tmp/gnu_radio_out", False)
self.blocks_file_sink_0.set_unbuffered(False)
self.blocks_complex_to_mag_squared_0 = blocks.complex_to_mag_squared(1)
##################################################
# Connections
##################################################
self.connect((self.blocks_complex_to_mag_squared_0, 0), (self.blocks_multiply_const_vxx_0, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0), (self.blocks_file_sink_0, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0), (self.wxgui_numbersink2_0, 0))
self.connect((self.fractional_resampler_xx_0, 0), (self.blocks_complex_to_mag_squared_0, 0))
self.connect((self.freq_xlating_fir_filter_xxx_1, 0), (self.fractional_resampler_xx_0, 0))
self.connect((self.freq_xlating_fir_filter_xxx_1, 0), (self.wxgui_fftsink2_1, 0))
self.connect((self.osmosdr_source_0, 0), (self.freq_xlating_fir_filter_xxx_1, 0))
def get_target_rate_IM(self):
return self.target_rate_IM
def set_target_rate_IM(self, target_rate_IM):
self.target_rate_IM = target_rate_IM
self.set_firdes_tap(firdes.low_pass(1, self.samp_rate, 2000, self.target_rate_IM/4, firdes.WIN_HAMMING, 6.76))
self.fractional_resampler_xx_0.set_resamp_ratio((self.target_rate_IM)/(self.target_rate*self.samp_per_sym))
def get_target_rate(self):
return self.target_rate
def set_target_rate(self, target_rate):
self.target_rate = target_rate
self.set_variable_static_text_0(self.target_rate)
self.fractional_resampler_xx_0.set_resamp_ratio((self.target_rate_IM)/(self.target_rate*self.samp_per_sym))
self.wxgui_fftsink2_1.set_sample_rate(self.target_rate)
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.set_firdes_tap(firdes.low_pass(1, self.samp_rate, 2000, self.target_rate_IM/4, firdes.WIN_HAMMING, 6.76))
self.osmosdr_source_0.set_sample_rate(self.samp_rate)
def get_xlate_offset(self):
return self.xlate_offset
def set_xlate_offset(self, xlate_offset):
self.xlate_offset = xlate_offset
self._xlate_offset_slider.set_value(self.xlate_offset)
self._xlate_offset_text_box.set_value(self.xlate_offset)
self.freq_xlating_fir_filter_xxx_1.set_center_freq(self.xlate_offset)
def get_variable_static_text_0(self):
return self.variable_static_text_0
def set_variable_static_text_0(self, variable_static_text_0):
self.variable_static_text_0 = variable_static_text_0
self._variable_static_text_0_static_text.set_value(self.variable_static_text_0)
def get_samp_per_sym(self):
return self.samp_per_sym
def set_samp_per_sym(self, samp_per_sym):
self.samp_per_sym = samp_per_sym
self.fractional_resampler_xx_0.set_resamp_ratio((self.target_rate_IM)/(self.target_rate*self.samp_per_sym))
def get_gain(self):
return self.gain
def set_gain(self, gain):
self.gain = gain
self._gain_slider.set_value(self.gain)
self._gain_text_box.set_value(self.gain)
self.blocks_multiply_const_vxx_0.set_k((self.gain, ))
def get_firdes_tap(self):
return self.firdes_tap
def set_firdes_tap(self, firdes_tap):
self.firdes_tap = firdes_tap
self.freq_xlating_fir_filter_xxx_1.set_taps((self.firdes_tap))
if __name__ == '__main__':
parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
(options, args) = parser.parse_args()
tb = decoder_433MHz()
tb.Start(True)
tb.Wait()