mirror of
https://github.com/hb9fxq/gr-digitalhf
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120 lines
5.2 KiB
Python
120 lines
5.2 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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# Copyright 2019 hcab14@gmail.com.
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#
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# This is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# any later version.
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#
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# This software is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this software; see the file COPYING. If not, write to
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# the Free Software Foundation, Inc., 51 Franklin Street,
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# Boston, MA 02110-1301, USA.
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#
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import importlib
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from gnuradio import analog
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from gnuradio import blocks
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from gnuradio import digital
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from gnuradio import filter
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from gnuradio.filter import firdes
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from gnuradio.filter import pfb
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from gnuradio import gr
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import pmt
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import digitalhf
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import numpy as np
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class cis_12_channelizer(gr.hier_block2):
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"""
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docstring for block CIS-12 channelizer
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"""
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def __init__(self):
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gr.hier_block2.__init__(self,
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"cis_12_channelizer",
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gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
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gr.io_signature(2, 2, gr.sizeof_gr_complex)) # Output signature
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self.samp_rate = samp_rate = 12000.0
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self.analog_pll_refout_cc_0 = analog.pll_refout_cc(2*np.pi/1000,
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2*np.pi*3270/samp_rate,
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2*np.pi*3330/samp_rate)
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taps_pfb = firdes.low_pass_2(1,
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self.samp_rate,
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0.45*self.samp_rate/60,
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0.05*self.samp_rate/60,
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attenuation_dB=100,
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window=filter.firdes.WIN_BLACKMAN_HARRIS)
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taps_3300 = firdes.band_pass_2(1,
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self.samp_rate,
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3200,
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3400,
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100,
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attenuation_dB=60,
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window=filter.firdes.WIN_BLACKMAN_HARRIS)
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print('N=', len(taps_3300))
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self.filter_fir_filter_ccf_0 = filter.fir_filter_ccf(1,taps_3300)
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self.blocks_multiply_conjugate_cc_0 = blocks.multiply_conjugate_cc(1)
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self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex,
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(len(taps_3300)-1) // 2)
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self.pfb_channelizer_ccf_0 = pfb.channelizer_ccf(
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60,
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(taps_pfb),
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1.0,
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100)
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chmap = 60-(2+np.arange(12))
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self.pfb_channelizer_ccf_0.set_channel_map((chmap.tolist()))
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self.pfb_channelizer_ccf_0.set_channel_map(([47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58]))
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self.pfb_channelizer_ccf_0.declare_sample_delay(0)
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self.blocks_streams_to_vector_0 = blocks.streams_to_vector(gr.sizeof_gr_complex, 12)
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self.blocks_streams_to_vector_1 = blocks.streams_to_vector(gr.sizeof_gr_complex, 48)
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self.blocks_vector_to_stream_0 = blocks.vector_to_stream(gr.sizeof_gr_complex, 12)
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self.blocks_vector_pll_cc_0 = digitalhf.vector_pll_cc(samp_rate = 600.0,
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order = 2,
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freq_multipliers = [13,12,11,10,9,8,7,6,5,4,3,2])
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self.blocks_resamplers = [[] for _ in range(12)]
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for i in range(12):
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self.blocks_resamplers[i] = filter.rational_resampler_ccf(3,1)
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self.connect((self, 0),
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(self.filter_fir_filter_ccf_0, 0),
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(self.analog_pll_refout_cc_0, 0),
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(self.blocks_multiply_conjugate_cc_0, 1))
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self.connect((self, 0),
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(self.blocks_delay_0),
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(self.blocks_multiply_conjugate_cc_0, 0))
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self.connect((self.blocks_multiply_conjugate_cc_0, 0),
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(self.pfb_channelizer_ccf_0, 0))
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self.connect((self.blocks_multiply_conjugate_cc_0, 0), (self, 1))
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#self.connect((self.filter_fir_filter_ccf_0, 0),
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# (self, 1))
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for i in range(12):
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self.connect((self.pfb_channelizer_ccf_0, i),
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(self.blocks_resamplers[i], 0),
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(self.blocks_streams_to_vector_0, i))
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self.blocks_null_sink_0 = blocks.null_sink(48*gr.sizeof_gr_complex)
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for i in range(48):
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self.connect((self.pfb_channelizer_ccf_0, 12+i), (self.blocks_streams_to_vector_1, i))
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self.connect(self.blocks_streams_to_vector_1, self.blocks_null_sink_0)
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self.connect(self.blocks_streams_to_vector_0,
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self.blocks_vector_pll_cc_0,
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self.blocks_vector_to_stream_0,
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self)
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#self.connect((self,0),
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# (self.analog_pll_refout_cc_0, 0),
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# (self,0))
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