#!/usr/bin/env python2
# -*- coding: utf-8 -*-
##################################################
# GNU Radio Python Flow Graph
# Title: Top Block
# Generated: Sat Jan 28 17:29:35 2017
##################################################
from gnuradio import blocks
from gnuradio import eng_notation
from gnuradio import filter
from gnuradio import gr
from gnuradio.eng_option import eng_option
from gnuradio.filter import firdes
from optparse import OptionParser
import osmosdr
import time
class top_block(gr.top_block):
def __init__(self):
gr.top_block.__init__(self, "Top Block")
##################################################
# Variables
##################################################
self.trans_width = trans_width = 10e3
self.samp_rate = samp_rate = 1e6
self.mult_const = mult_const = 100
self.lowpass_decimation = lowpass_decimation = 10
self.freq = freq = 344940000
self.cutoff_freq = cutoff_freq = 50e3
##################################################
# Blocks
##################################################
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(freq, 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(True, 0)
self.osmosdr_source_0.set_gain(0, 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.low_pass_filter_0 = filter.fir_filter_ccf(lowpass_decimation, firdes.low_pass(
1, samp_rate, cutoff_freq, trans_width, firdes.WIN_HAMMING, 6.76))
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vff((mult_const, ))
self.blocks_float_to_uchar_0 = blocks.float_to_uchar()
self.blocks_file_sink_1 = blocks.file_sink(gr.sizeof_char*1, '/tmp/grcfifo', False)
self.blocks_file_sink_1.set_unbuffered(False)
self.blocks_complex_to_mag_0 = blocks.complex_to_mag(1)
##################################################
# Connections
##################################################
self.connect((self.blocks_complex_to_mag_0, 0), (self.blocks_multiply_const_vxx_0, 0))
self.connect((self.blocks_float_to_uchar_0, 0), (self.blocks_file_sink_1, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0), (self.blocks_float_to_uchar_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.blocks_complex_to_mag_0, 0))
self.connect((self.osmosdr_source_0, 0), (self.low_pass_filter_0, 0))
def get_trans_width(self):
return self.trans_width
def set_trans_width(self, trans_width):
self.trans_width = trans_width
self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.samp_rate, self.cutoff_freq, self.trans_width, firdes.WIN_HAMMING, 6.76))
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.osmosdr_source_0.set_sample_rate(self.samp_rate)
self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.samp_rate, self.cutoff_freq, self.trans_width, firdes.WIN_HAMMING, 6.76))
def get_mult_const(self):
return self.mult_const
def set_mult_const(self, mult_const):
self.mult_const = mult_const
self.blocks_multiply_const_vxx_0.set_k((self.mult_const, ))
def get_lowpass_decimation(self):
return self.lowpass_decimation
def set_lowpass_decimation(self, lowpass_decimation):
self.lowpass_decimation = lowpass_decimation
def get_freq(self):
return self.freq
def set_freq(self, freq):
self.freq = freq
self.osmosdr_source_0.set_center_freq(self.freq, 0)
def get_cutoff_freq(self):
return self.cutoff_freq
def set_cutoff_freq(self, cutoff_freq):
self.cutoff_freq = cutoff_freq
self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.samp_rate, self.cutoff_freq, self.trans_width, firdes.WIN_HAMMING, 6.76))
def main(top_block_cls=top_block, options=None):
tb = top_block_cls()
tb.start()
tb.wait()
if __name__ == '__main__':
main()
