Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 1 | #!/usr/bin/env python |
| 2 | # -*- coding: utf-8 -*- |
| 3 | # @file |
Piotr Krysik | a6268a5 | 2017-08-23 16:02:19 +0200 | [diff] [blame] | 4 | # @author (C) 2015 by Roman Khassraf <rkhassraf@gmail.com> |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 5 | # (C) 2019 by Piotr Krysik <ptrkrysik@gmail.com> |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 6 | # @section LICENSE |
| 7 | # |
| 8 | # Gr-gsm is free software; you can redistribute it and/or modify |
| 9 | # it under the terms of the GNU General Public License as published by |
| 10 | # the Free Software Foundation; either version 3, or (at your option) |
| 11 | # any later version. |
| 12 | # |
| 13 | # Gr-gsm is distributed in the hope that it will be useful, |
| 14 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | # GNU General Public License for more details. |
| 17 | # |
| 18 | # You should have received a copy of the GNU General Public License |
| 19 | # along with gr-gsm; see the file COPYING. If not, write to |
| 20 | # the Free Software Foundation, Inc., 51 Franklin Street, |
| 21 | # Boston, MA 02110-1301, USA. |
| 22 | # |
| 23 | # |
| 24 | |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 25 | from gnuradio import blocks |
| 26 | from gnuradio import eng_notation |
| 27 | from gnuradio import gr |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 28 | from gnuradio.eng_option import eng_option |
| 29 | from gnuradio.filter import firdes |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 30 | from optparse import OptionParser, OptionGroup |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 31 | import osmosdr |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 32 | import time |
| 33 | import grgsm |
Roman Khassraf | 7eda480 | 2015-08-24 20:00:48 +0200 | [diff] [blame] | 34 | import signal |
| 35 | import sys |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 36 | |
Piotr Krysik | 3e192c4 | 2016-02-13 07:31:51 +0100 | [diff] [blame] | 37 | class grgsm_capture(gr.top_block): |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 38 | def __init__(self, |
| 39 | freq, |
| 40 | gain=30, |
| 41 | samp_rate=1e6, |
| 42 | rec_length=float('Inf'), |
| 43 | freq_corr=0, |
| 44 | output_filename=None, |
| 45 | bandwidth=0, |
| 46 | bb_gain=20, |
| 47 | if_gain=20, |
| 48 | antenna="", |
| 49 | device_args=""): |
Piotr Krysik | 3e192c4 | 2016-02-13 07:31:51 +0100 | [diff] [blame] | 50 | gr.top_block.__init__(self, "Gr-gsm Capture") |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 51 | |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 52 | ################################################## |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 53 | # Setting up RF source |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 54 | ################################################## |
| 55 | |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 56 | self.sdr_source = \ |
| 57 | osmosdr.source(args="numchan=1" + device_args ) |
| 58 | self.sdr_source.set_sample_rate(samp_rate) |
| 59 | self.sdr_source.set_center_freq(freq, 0) |
| 60 | self.sdr_source.set_freq_corr(freq_corr, 0) |
| 61 | self.sdr_source.set_dc_offset_mode(2, 0) |
| 62 | self.sdr_source.set_iq_balance_mode(2, 0) |
| 63 | self.sdr_source.set_gain_mode(True, 0) |
| 64 | self.sdr_source.set_gain(gain, 0) |
| 65 | self.sdr_source.set_if_gain(if_gain, 0) |
| 66 | self.sdr_source.set_bb_gain(bb_gain, 0) |
| 67 | self.sdr_source.set_antenna("", 0) |
| 68 | if bandwidth != 0: |
| 69 | self.sdr_source.set_bandwidth(bandwidth, 0) |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 70 | |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 71 | ################################################## |
| 72 | # The rest of processing blocks |
| 73 | ################################################## |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 74 | |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 75 | if rec_length != float('Inf'): |
| 76 | self.head = \ |
| 77 | blocks.head(gr.sizeof_gr_complex, int(samp_rate*rec_length)) |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 78 | |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 79 | self.file_sink = blocks.file_sink(gr.sizeof_gr_complex*1, \ |
| 80 | output_filename, False) |
| 81 | self.file_sink.set_unbuffered(False) |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 82 | |
| 83 | ################################################## |
| 84 | # Connections |
| 85 | ################################################## |
| 86 | |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 87 | if rec_length != float('Inf'): #if recording length is not infinite |
| 88 | #connect head block after the source |
| 89 | self.connect((self.sdr_source, 0), (self.head, 0)) |
| 90 | self.connect((self.head, 0), (self.file_sink, 0)) |
Piotr Krysik | 351d217 | 2015-09-20 13:53:06 +0200 | [diff] [blame] | 91 | else: |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 92 | self.connect((self.sdr_source, 0), (self.file_sink, 0)) |
Piotr Krysik | 351d217 | 2015-09-20 13:53:06 +0200 | [diff] [blame] | 93 | |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 94 | if __name__ == '__main__': |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 95 | |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 96 | parser = OptionParser(option_class=eng_option, usage="%prog [options] output_filename", |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 97 | description="RTL-SDR capturing app of gr-gsm.") |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 98 | |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 99 | parser.add_option("-f", "--freq", dest="freq", type="eng_float", |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 100 | help="Set frequency [default=%default]") |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 101 | |
| 102 | parser.add_option("-a", "--arfcn", dest="arfcn", type="intx", |
| 103 | help="Set ARFCN instead of frequency (for PCS1900 add" |
| 104 | "0x8000 (2**15) to the ARFCN number)") |
| 105 | |
| 106 | parser.add_option("-g", "--gain", dest="gain", type="eng_float", |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 107 | default=eng_notation.num_to_str(30), |
| 108 | help="Set gain [default=%default]") |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 109 | |
| 110 | parser.add_option("-s", "--samp-rate", dest="samp_rate", type="eng_float", |
Piotr Krysik | 9648540 | 2016-07-21 16:06:03 +0200 | [diff] [blame] | 111 | default=eng_notation.num_to_str(1000000), |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 112 | help="Set samp_rate [default=%default]") |
Piotr Krysik | 7185b66 | 2016-02-14 20:24:54 +0100 | [diff] [blame] | 113 | |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 114 | parser.add_option("-T", "--rec-length", dest="rec_length", type="float", |
| 115 | default='Inf', help="Set length of recording in seconds " |
| 116 | "[default=infinity]") |
Piotr Krysik | 351d217 | 2015-09-20 13:53:06 +0200 | [diff] [blame] | 117 | |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 118 | parser.add_option("-p", "--freq-corr", dest="freq_corr", type="eng_float", |
| 119 | default="0", help="Set frequency correction in" |
| 120 | " ppm [default=%default]") |
| 121 | |
| 122 | osmogroup = OptionGroup(parser, 'Additional osmosdr source options', |
| 123 | "Options specific to a subset of SDR receivers " |
| 124 | "supported by osmosdr source.") |
| 125 | |
| 126 | osmogroup.add_option("-w", "--bandwidth", dest="bandwidth", type="eng_float", |
| 127 | default="0", help="Set bandwidth [default=samp_rate]") |
| 128 | |
| 129 | osmogroup.add_option("", "--bb-gain", dest="bb_gain", type="eng_float", |
| 130 | default=eng_notation.num_to_str(20), |
| 131 | help="Set baseband gain [default=%default]") |
| 132 | |
| 133 | osmogroup.add_option("", "--if-gain", dest="if_gain", type="eng_float", |
| 134 | default=eng_notation.num_to_str(20), |
| 135 | help="Set intermediate freque gain [default=%default]") |
| 136 | |
| 137 | osmogroup.add_option("", "--ant", dest="antenna", type="string", |
| 138 | default="", help="Set antenna " |
| 139 | "[default=%default]") |
| 140 | |
| 141 | osmogroup.add_option("", "--args", dest="device_args", type="string", |
| 142 | default="", help="Set device arguments " |
| 143 | "[default=%default]") |
| 144 | |
| 145 | parser.add_option_group(osmogroup) |
Piotr Krysik | 351d217 | 2015-09-20 13:53:06 +0200 | [diff] [blame] | 146 | |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 147 | (options, args) = parser.parse_args() |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 148 | |
| 149 | if not args: |
| 150 | parser.error("Please provide an output file name to save the captured data\n") |
| 151 | |
| 152 | output_filename = args[0] |
| 153 | |
| 154 | if (options.freq is None and options.arfcn is None) or \ |
| 155 | (options.freq is not None and options.arfcn is not None): |
| 156 | parser.error("You have to provide either a frequency or" |
| 157 | "an ARFCN (but not both).\n") |
| 158 | |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 159 | arfcn = 0 |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 160 | freq = 0 |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 161 | if options.arfcn: |
Piotr Krysik | a80567f | 2017-09-11 10:01:12 +0200 | [diff] [blame] | 162 | if not grgsm.arfcn.is_valid_arfcn(options.arfcn): |
| 163 | parser.error("ARFCN is not valid\n") |
| 164 | else: |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 165 | freq = grgsm.arfcn.arfcn2downlink(options.arfcn) |
| 166 | elif options.freq: |
| 167 | freq = options.freq |
| 168 | |
| 169 | tb = grgsm_capture(freq=freq, |
| 170 | gain=options.gain, |
| 171 | freq_corr=options.freq_corr, |
| 172 | samp_rate=options.samp_rate, |
| 173 | output_filename=output_filename, |
| 174 | rec_length=options.rec_length, |
| 175 | bandwidth=options.bandwidth, |
| 176 | bb_gain=options.bb_gain, |
| 177 | if_gain=options.if_gain, |
| 178 | antenna=options.antenna, |
| 179 | device_args=options.device_args) |
| 180 | |
Roman Khassraf | 7eda480 | 2015-08-24 20:00:48 +0200 | [diff] [blame] | 181 | def signal_handler(signal, frame): |
| 182 | tb.stop() |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 183 | tb.wait() |
Roman Khassraf | 7eda480 | 2015-08-24 20:00:48 +0200 | [diff] [blame] | 184 | sys.exit(0) |
Piotr Krysik | e11b1d3 | 2018-09-20 14:49:27 +0200 | [diff] [blame^] | 185 | |
Roman Khassraf | 7eda480 | 2015-08-24 20:00:48 +0200 | [diff] [blame] | 186 | signal.signal(signal.SIGINT, signal_handler) |
Roman Khassraf | 529e215 | 2015-08-22 19:52:41 +0200 | [diff] [blame] | 187 | |
| 188 | tb.start() |
Roman Khassraf | 7eda480 | 2015-08-24 20:00:48 +0200 | [diff] [blame] | 189 | tb.wait() |