#!/usr/bin/env python2 # -*- coding: utf-8 -*- ################################################## # GNU Radio Python Flow Graph # Title: Gr-gsm Livemon # Author: Piotr Krysik # Description: Interactive monitor of a single C0 channel with analysis performed by Wireshark (command to run wireshark: sudo wireshark -k -f udp -Y gsmtap -i lo) # Generated: Wed Aug 30 10:38:50 2017 ################################################## from gnuradio import blocks 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 import osmosdr import pmt import time class grgsm_livemon_headless(gr.top_block): def __init__(self, rec_len=1000000, samp_rate=2000000.052982, fc=941.8e6, shiftoff=400e3, args="", osr=4, collector="localhost", collectorport="4729", serverport="4729", gain=30, ppm=0): gr.top_block.__init__(self, "Gr-gsm Livemon") ################################################## # Parameters ################################################## self.rec_len = rec_len self.samp_rate = samp_rate self.fc = fc self.shiftoff = shiftoff self.args = args self.osr = osr self.collector = collector self.collectorport = collectorport self.serverport = serverport self.gain = gain self.ppm = ppm ################################################## # Blocks ################################################## self.rtlsdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + args ) self.rtlsdr_source_0.set_sample_rate(samp_rate) self.rtlsdr_source_0.set_center_freq(fc-shiftoff, 0) self.rtlsdr_source_0.set_freq_corr(ppm, 0) self.rtlsdr_source_0.set_dc_offset_mode(2, 0) self.rtlsdr_source_0.set_iq_balance_mode(2, 0) self.rtlsdr_source_0.set_gain_mode(False, 0) self.rtlsdr_source_0.set_gain(gain, 0) self.rtlsdr_source_0.set_if_gain(20, 0) self.rtlsdr_source_0.set_bb_gain(20, 0) self.rtlsdr_source_0.set_antenna("", 0) self.rtlsdr_source_0.set_bandwidth(250e3+abs(shiftoff), 0) self.gsm_sdcch8_demapper_0 = grgsm.gsm_sdcch8_demapper( timeslot_nr=1, ) self.gsm_receiver_0 = grgsm.receiver(4, ([0]), ([]), False) self.gsm_message_printer_1 = grgsm.message_printer(pmt.intern(""), False, False, False) self.gsm_input_0 = grgsm.gsm_input( ppm=ppm-int(ppm), osr=4, fc=fc, samp_rate_in=samp_rate, ) self.gsm_decryption_0 = grgsm.decryption(([]), 1) self.gsm_control_channels_decoder_0_0 = grgsm.control_channels_decoder() self.gsm_control_channels_decoder_0 = grgsm.control_channels_decoder() self.gsm_clock_offset_control_0 = grgsm.clock_offset_control(fc-shiftoff, samp_rate, osr) self.gsm_bcch_ccch_sdcch4_demapper_0 = grgsm.gsm_bcch_ccch_sdcch4_demapper( timeslot_nr=0, ) self.blocks_socket_pdu_0_1 = blocks.socket_pdu("UDP_CLIENT", collector, collectorport, 1500, False) self.blocks_socket_pdu_0_0 = blocks.socket_pdu("UDP_SERVER", "127.0.0.1", serverport, 10000, False) self.blocks_rotator_cc_0 = blocks.rotator_cc(-2*pi*shiftoff/samp_rate) self.blocks_head_0 = blocks.head(gr.sizeof_gr_complex*1, int(rec_len*samp_rate)) ################################################## # Connections ################################################## self.msg_connect((self.blocks_socket_pdu_0_0, 'pdus'), (self.gsm_message_printer_1, 'msgs')) self.msg_connect((self.gsm_bcch_ccch_sdcch4_demapper_0, 'bursts'), (self.gsm_control_channels_decoder_0, 'bursts')) self.msg_connect((self.gsm_clock_offset_control_0, 'ctrl'), (self.gsm_input_0, 'ctrl_in')) self.msg_connect((self.gsm_control_channels_decoder_0, 'msgs'), (self.blocks_socket_pdu_0_1, 'pdus')) self.msg_connect((self.gsm_control_channels_decoder_0_0, 'msgs'), (self.blocks_socket_pdu_0_1, 'pdus')) self.msg_connect((self.gsm_decryption_0, 'bursts'), (self.gsm_control_channels_decoder_0_0, 'bursts')) self.msg_connect((self.gsm_receiver_0, 'C0'), (self.gsm_bcch_ccch_sdcch4_demapper_0, 'bursts')) self.msg_connect((self.gsm_receiver_0, 'measurements'), (self.gsm_clock_offset_control_0, 'measurements')) self.msg_connect((self.gsm_receiver_0, 'C0'), (self.gsm_sdcch8_demapper_0, 'bursts')) self.msg_connect((self.gsm_sdcch8_demapper_0, 'bursts'), (self.gsm_decryption_0, 'bursts')) self.connect((self.blocks_head_0, 0), (self.blocks_rotator_cc_0, 0)) self.connect((self.blocks_rotator_cc_0, 0), (self.gsm_input_0, 0)) self.connect((self.gsm_input_0, 0), (self.gsm_receiver_0, 0)) self.connect((self.rtlsdr_source_0, 0), (self.blocks_head_0, 0)) def get_rec_len(self): return self.rec_len def set_rec_len(self, rec_len): self.rec_len = rec_len self.blocks_head_0.set_length(int(self.rec_len*self.samp_rate)) def get_samp_rate(self): return self.samp_rate def set_samp_rate(self, samp_rate): self.samp_rate = samp_rate self.rtlsdr_source_0.set_sample_rate(self.samp_rate) self.blocks_head_0.set_length(int(self.rec_len*self.samp_rate)) self.blocks_rotator_cc_0.set_phase_inc(-2*pi*self.shiftoff/self.samp_rate) self.gsm_input_0.set_samp_rate_in(self.samp_rate) def get_fc(self): return self.fc def set_fc(self, fc): self.fc = fc self.rtlsdr_source_0.set_center_freq(self.fc-self.shiftoff, 0) self.gsm_input_0.set_fc(self.fc) def get_shiftoff(self): return self.shiftoff def set_shiftoff(self, shiftoff): self.shiftoff = shiftoff self.rtlsdr_source_0.set_center_freq(self.fc-self.shiftoff, 0) self.rtlsdr_source_0.set_bandwidth(250e3+abs(self.shiftoff), 0) self.blocks_rotator_cc_0.set_phase_inc(-2*pi*self.shiftoff/self.samp_rate) def get_args(self): return self.args def set_args(self, args): self.args = args def get_osr(self): return self.osr def set_osr(self, osr): self.osr = osr def get_collector(self): return self.collector def set_collector(self, collector): self.collector = collector def get_collectorport(self): return self.collectorport def set_collectorport(self, collectorport): self.collectorport = collectorport def get_serverport(self): return self.serverport def set_serverport(self, serverport): self.serverport = serverport def get_gain(self): return self.gain def set_gain(self, gain): self.gain = gain self.rtlsdr_source_0.set_gain(self.gain, 0) def get_ppm(self): return self.ppm def set_ppm(self, ppm): self.ppm = ppm self.rtlsdr_source_0.set_freq_corr(self.ppm, 0) self.gsm_input_0.set_ppm(self.ppm-int(self.ppm)) def argument_parser(): parser = OptionParser(option_class=eng_option, usage="%prog: [options]") parser.add_option( "-T", "--rec-len", dest="rec_len", type="eng_float", default=eng_notation.num_to_str(1000000), help="Set Recording length in seconds [default=%default]") parser.add_option( "-s", "--samp-rate", dest="samp_rate", type="eng_float", default=eng_notation.num_to_str(2000000.052982), help="Set samp_rate [default=%default]") parser.add_option( "-f", "--fc", dest="fc", type="eng_float", default=eng_notation.num_to_str(941.8e6), help="Set GSM channel's central frequency [default=%default]") parser.add_option( "-o", "--shiftoff", dest="shiftoff", type="eng_float", default=eng_notation.num_to_str(400e3), help="Set Frequency Shiftoff [default=%default]") parser.add_option( "", "--args", dest="args", type="string", default="", help="Set Device Arguments [default=%default]") parser.add_option( "", "--osr", dest="osr", type="intx", default=4, help="Set OverSampling Ratio [default=%default]") parser.add_option( "", "--collector", dest="collector", type="string", default="localhost", help="Set IP or DNS name of collector point [default=%default]") parser.add_option( "", "--collectorport", dest="collectorport", type="string", default="4729", help="Set UDP port number of collector [default=%default]") parser.add_option( "", "--serverport", dest="serverport", type="string", default="4729", help="Set UDP server listening port [default=%default]") parser.add_option( "-g", "--gain", dest="gain", type="eng_float", default=eng_notation.num_to_str(30), help="Set RF Gain [default=%default]") parser.add_option( "-p", "--ppm", dest="ppm", type="eng_float", default=eng_notation.num_to_str(0), help="Set Clock frequency offset in ppms (1/1e6 parts) [default=%default]") return parser def main(top_block_cls=grgsm_livemon_headless, options=None): if options is None: options, _ = argument_parser().parse_args() tb = top_block_cls(rec_len=options.rec_len, samp_rate=options.samp_rate, fc=options.fc, shiftoff=options.shiftoff, args=options.args, osr=options.osr, collector=options.collector, collectorport=options.collectorport, serverport=options.serverport, gain=options.gain, ppm=options.ppm) tb.start() tb.wait() if __name__ == '__main__': main()