66 lines
2.4 KiB
Python
66 lines
2.4 KiB
Python
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#!/usr/bin/env python
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#
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# Copyright 2005,2006,2007 Free Software Foundation, Inc.
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#
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# cqpsk.py (C) Copyright 2009, KA1RBI
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#
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# This file is part of GNU Radio
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#
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# GNU Radio 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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# GNU Radio 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 GNU Radio; 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 math
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from gnuradio import gr, gru, audio, eng_notation, blks2, optfir
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from gnuradio.eng_option import eng_option
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from optparse import OptionParser
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# produces an output file in complex format at sampling rate=48000
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# the input file (a character stream) is used to produce the modulated
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# complex output file.
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class my_top_block(gr.top_block):
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def __init__(self):
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gr.top_block.__init__(self)
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parser = OptionParser(option_class=eng_option)
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parser.add_option("-i", "--input-file", type="string", default="in.dat", help="specify the input file")
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parser.add_option("-l", "--log", action="store_true", default=False, help="dump debug .dat files")
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parser.add_option("-o", "--output-file", type="string", default="out.dat", help="specify the output file")
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parser.add_option("-s", "--sample-rate", type="int", default=48000, help="input sample rate")
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parser.add_option("-v", "--verbose", action="store_true", default=False, help="dump demodulation data")
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(options, args) = parser.parse_args()
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IN = gr.file_source(gr.sizeof_char, options.input_file)
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symbol_rate = 4800
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sample_rate = options.sample_rate
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sps = sample_rate // symbol_rate
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ENC = blks2.cqpsk_mod(samples_per_symbol=sps,
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log=options.log,
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verbose=options.verbose)
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OUT = gr.file_sink(gr.sizeof_gr_complex, options.output_file)
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self.connect(IN, ENC, OUT)
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if __name__ == "__main__":
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try:
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my_top_block().run()
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except KeyboardInterrupt:
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tb.stop()
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