diff options
| -rwxr-xr-x | apps/helpers/grgsm_capture | 280 |
1 files changed, 113 insertions, 167 deletions
diff --git a/apps/helpers/grgsm_capture b/apps/helpers/grgsm_capture index b1b85a7..f698205 100755 --- a/apps/helpers/grgsm_capture +++ b/apps/helpers/grgsm_capture @@ -2,6 +2,7 @@ # -*- coding: utf-8 -*- # @file # @author (C) 2015 by Roman Khassraf <rkhassraf@gmail.com> +# (C) 2019 by Piotr Krysik <ptrkrysik@gmail.com> # @section LICENSE # # Gr-gsm is free software; you can redistribute it and/or modify @@ -26,217 +27,162 @@ from gnuradio import eng_notation from gnuradio import gr from gnuradio.eng_option import eng_option from gnuradio.filter import firdes -from math import pi -from optparse import OptionParser - -import grgsm +from optparse import OptionParser, OptionGroup import osmosdr -import pmt +import time +import grgsm import signal import sys - class grgsm_capture(gr.top_block): - - def __init__(self, fc, gain, samp_rate, ppm, arfcn, cfile=None, burst_file=None, verbose=False, rec_length=None, args=""): - + def __init__(self, + freq, + gain=30, + samp_rate=1e6, + rec_length=float('Inf'), + freq_corr=0, + output_filename=None, + bandwidth=0, + bb_gain=20, + if_gain=20, + antenna="", + device_args=""): gr.top_block.__init__(self, "Gr-gsm Capture") - + ################################################## - # Parameters + # Setting up RF source ################################################## - self.fc = fc - self.gain = gain - self.samp_rate = samp_rate - self.ppm = ppm - self.arfcn = arfcn - self.cfile = cfile - self.burst_file = burst_file - self.verbose = verbose - self.shiftoff = shiftoff = 400e3 - self.rec_length = rec_length - + + self.sdr_source = \ + osmosdr.source(args="numchan=1" + device_args ) + self.sdr_source.set_sample_rate(samp_rate) + self.sdr_source.set_center_freq(freq, 0) + self.sdr_source.set_freq_corr(freq_corr, 0) + self.sdr_source.set_dc_offset_mode(2, 0) + self.sdr_source.set_iq_balance_mode(2, 0) + self.sdr_source.set_gain_mode(True, 0) + self.sdr_source.set_gain(gain, 0) + self.sdr_source.set_if_gain(if_gain, 0) + self.sdr_source.set_bb_gain(bb_gain, 0) + self.sdr_source.set_antenna("", 0) + if bandwidth != 0: + self.sdr_source.set_bandwidth(bandwidth, 0) + ################################################## - # Processing Blocks + # The rest of processing blocks ################################################## - self.rtlsdr_source = osmosdr.source( args="numchan=" + str(1) + " " + args ) - self.rtlsdr_source.set_sample_rate(samp_rate) - self.rtlsdr_source.set_center_freq(fc - shiftoff, 0) - self.rtlsdr_source.set_freq_corr(ppm, 0) - self.rtlsdr_source.set_dc_offset_mode(2, 0) - self.rtlsdr_source.set_iq_balance_mode(2, 0) - self.rtlsdr_source.set_gain_mode(True, 0) - self.rtlsdr_source.set_gain(gain, 0) - self.rtlsdr_source.set_if_gain(20, 0) - self.rtlsdr_source.set_bb_gain(20, 0) - self.rtlsdr_source.set_antenna("", 0) - self.rtlsdr_source.set_bandwidth(250e3+abs(shiftoff), 0) - self.blocks_rotator = blocks.rotator_cc(-2*pi*shiftoff/samp_rate) - - if self.rec_length is not None: - self.blocks_head_0 = blocks.head(gr.sizeof_gr_complex, int(samp_rate*rec_length)) - - if self.verbose or self.burst_file: - self.gsm_receiver = grgsm.receiver(4, ([self.arfcn]), ([])) - self.gsm_input = grgsm.gsm_input( - ppm=0, - osr=4, - fc=fc, - samp_rate_in=samp_rate, - ) - self.gsm_clock_offset_control = grgsm.clock_offset_control(fc-shiftoff, samp_rate, osr=4) - - if self.burst_file: - self.gsm_burst_file_sink = grgsm.burst_file_sink(self.burst_file) - - if self.cfile: - self.blocks_file_sink = blocks.file_sink(gr.sizeof_gr_complex*1, self.cfile, False) - self.blocks_file_sink.set_unbuffered(False) - - if self.verbose: - self.gsm_bursts_printer_0 = grgsm.bursts_printer(pmt.intern(""), - False, False, False, False) + if rec_length != float('Inf'): + self.head = \ + blocks.head(gr.sizeof_gr_complex, int(samp_rate*rec_length)) + + self.file_sink = blocks.file_sink(gr.sizeof_gr_complex*1, \ + output_filename, False) + self.file_sink.set_unbuffered(False) ################################################## # Connections ################################################## - if self.rec_length is not None: #if recording length is defined connect head block after the source - self.connect((self.rtlsdr_source, 0), (self.blocks_head_0, 0)) - self.connect((self.blocks_head_0, 0), (self.blocks_rotator, 0)) + if rec_length != float('Inf'): #if recording length is not infinite + #connect head block after the source + self.connect((self.sdr_source, 0), (self.head, 0)) + self.connect((self.head, 0), (self.file_sink, 0)) else: - self.connect((self.rtlsdr_source, 0), (self.blocks_rotator, 0)) + self.connect((self.sdr_source, 0), (self.file_sink, 0)) - if self.cfile: - self.connect((self.blocks_rotator, 0), (self.blocks_file_sink, 0)) +if __name__ == '__main__': - if self.verbose or self.burst_file: - self.connect((self.gsm_input, 0), (self.gsm_receiver, 0)) - self.connect((self.blocks_rotator, 0), (self.gsm_input, 0)) - self.msg_connect(self.gsm_clock_offset_control, "ctrl", self.gsm_input, "ctrl_in") - self.msg_connect(self.gsm_receiver, "measurements", self.gsm_clock_offset_control, "measurements") + parser = OptionParser(option_class=eng_option, usage="%prog [options] output_filename", + description="RTL-SDR capturing app of gr-gsm.") - if self.burst_file: - self.msg_connect(self.gsm_receiver, "C0", self.gsm_burst_file_sink, "in") - if self.verbose: - self.msg_connect(self.gsm_receiver, "C0", self.gsm_bursts_printer_0, "bursts") + parser.add_option("-f", "--freq", dest="freq", type="eng_float", + help="Set frequency [default=%default]") - def get_fc(self): - return self.fc + parser.add_option("-a", "--arfcn", dest="arfcn", type="intx", + help="Set ARFCN instead of frequency (for PCS1900 add" + "0x8000 (2**15) to the ARFCN number)") - def set_fc(self, fc): - self.fc = fc - if self.verbose or self.burst_file: - self.gsm_input.set_fc(self.fc) - - def get_arfcn(self): - return self.arfcn + parser.add_option("-g", "--gain", dest="gain", type="eng_float", + default=eng_notation.num_to_str(30), + help="Set gain [default=%default]") - def set_arfcn(self, arfcn): - self.arfcn = arfcn - if self.verbose or self.burst_file: - self.gsm_receiver.set_cell_allocation([self.arfcn]) - new_freq = grgsm.arfcn.arfcn2downlink(self.arfcn) - self.set_fc(new_freq) + parser.add_option("-s", "--samp-rate", dest="samp_rate", type="eng_float", + default=eng_notation.num_to_str(1000000), + help="Set samp_rate [default=%default]") - def get_gain(self): - return self.gain + parser.add_option("-T", "--rec-length", dest="rec_length", type="float", + default='Inf', help="Set length of recording in seconds " + "[default=infinity]") - def set_gain(self, gain): - self.gain = gain + parser.add_option("-p", "--freq-corr", dest="freq_corr", type="eng_float", + default="0", help="Set frequency correction in" + " ppm [default=%default]") - def get_samp_rate(self): - return self.samp_rate + osmogroup = OptionGroup(parser, 'Additional osmosdr source options', + "Options specific to a subset of SDR receivers " + "supported by osmosdr source.") - def set_samp_rate(self, samp_rate): - self.samp_rate = samp_rate - self.rtlsdr_source.set_sample_rate(self.samp_rate) - if self.verbose or self.burst_file: - self.gsm_input.set_samp_rate_in(self.samp_rate) + osmogroup.add_option("-w", "--bandwidth", dest="bandwidth", type="eng_float", + default="0", help="Set bandwidth [default=samp_rate]") - def get_ppm(self): - return self.ppm + osmogroup.add_option("", "--bb-gain", dest="bb_gain", type="eng_float", + default=eng_notation.num_to_str(20), + help="Set baseband gain [default=%default]") - def set_ppm(self, ppm): - self.ppm = ppm - self.set_ppm_slider(self.ppm) + osmogroup.add_option("", "--if-gain", dest="if_gain", type="eng_float", + default=eng_notation.num_to_str(20), + help="Set intermediate freque gain [default=%default]") - def get_rec_length(self): - return self.rec_length + osmogroup.add_option("", "--ant", dest="antenna", type="string", + default="", help="Set antenna " + "[default=%default]") - def set_rec_length(self, rec_length): - self.rec_length = rec_length - self.blocks_head_0.set_length(int(self.samp_rate*self.rec_length)) + osmogroup.add_option("", "--args", dest="device_args", type="string", + default="", help="Set device arguments " + "[default=%default]") + parser.add_option_group(osmogroup) -if __name__ == '__main__': + (options, args) = parser.parse_args() - parser = OptionParser(option_class=eng_option, usage="%prog [options]", - description="RTL-SDR capturing app of gr-gsm.") + if not args: + parser.error("Please provide an output file name to save the captured data\n") - parser.add_option("-f", "--fc", dest="fc", type="eng_float", - help="Set frequency [default=%default]") - - parser.add_option("-a", "--arfcn", dest="arfcn", type="intx", - help="Set ARFCN instead of frequency (for PCS1900 add 0x8000 (2**15) to the ARFCN number)") - - parser.add_option("-g", "--gain", dest="gain", type="eng_float", - default=eng_notation.num_to_str(30), - help="Set gain [default=%default]") - - parser.add_option("-s", "--samp-rate", dest="samp_rate", type="eng_float", - default=eng_notation.num_to_str(1000000), - help="Set samp_rate [default=%default]") - - parser.add_option("-p", "--ppm", dest="ppm", type="intx", default=0, - help="Set ppm [default=%default]") - - parser.add_option("-b", "--burst-file", dest="burst_file", - help="File where the captured bursts are saved") - - parser.add_option("-c", "--cfile", dest="cfile", - help="File where the captured data are saved") - - parser.add_option("", "--args", dest="args", type="string", default="", - help="Set device arguments [default=%default]") - - parser.add_option("-v", "--verbose", action="store_true", - help="If set, the captured bursts are printed to stdout") - - parser.add_option("-T", "--rec-length", dest="rec_length", type="eng_float", - help="Set length of recording in seconds [default=%default]") + output_filename = args[0] + + if (options.freq is None and options.arfcn is None) or \ + (options.freq is not None and options.arfcn is not None): + parser.error("You have to provide either a frequency or" + "an ARFCN (but not both).\n") - (options, args) = parser.parse_args() - - if options.cfile is None and options.burst_file is None: - parser.error("Please provide a cfile or a burst file (or both) to save the captured data\n") - - if (options.fc is None and options.arfcn is None) or (options.fc is not None and options.arfcn is not None): - parser.error("You have to provide either a frequency or an ARFCN (but not both).\n") - arfcn = 0 - fc = 939.4e6 + freq = 0 if options.arfcn: if not grgsm.arfcn.is_valid_arfcn(options.arfcn): parser.error("ARFCN is not valid\n") else: - arfcn = options.arfcn - fc = grgsm.arfcn.arfcn2downlink(arfcn) - elif options.fc: - fc = options.fc - arfcn = grgsm.arfcn.downlink2arfcn(options.fc) - - tb = grgsm_capture(fc=fc, gain=options.gain, samp_rate=options.samp_rate, - ppm=options.ppm, arfcn=arfcn, cfile=options.cfile, - burst_file=options.burst_file, verbose=options.verbose, - rec_length=options.rec_length, args=options.args) - + freq = grgsm.arfcn.arfcn2downlink(options.arfcn) + elif options.freq: + freq = options.freq + + tb = grgsm_capture(freq=freq, + gain=options.gain, + freq_corr=options.freq_corr, + samp_rate=options.samp_rate, + output_filename=output_filename, + rec_length=options.rec_length, + bandwidth=options.bandwidth, + bb_gain=options.bb_gain, + if_gain=options.if_gain, + antenna=options.antenna, + device_args=options.device_args) + def signal_handler(signal, frame): tb.stop() - tb.wait() + tb.wait() sys.exit(0) - + signal.signal(signal.SIGINT, signal_handler) tb.start() |