#!/usr/bin/env python2 # -*- coding: utf-8 -*- ################################################## # GNU Radio Python Flow Graph # Title: Trx radio interface # Author: (C) Piotr Krysik 2017 # Description: Alpha version of trx radio interface # Generated: Fri Dec 1 10:49:25 2017 ################################################## from dict_toggle_sign import dict_toggle_sign from gnuradio import blocks from gnuradio import digital from gnuradio import eng_notation from gnuradio import filter from gnuradio import gr from gnuradio import uhd from gnuradio.eng_option import eng_option from gnuradio.filter import firdes from grgsm import gsm_gmsk_mod from optparse import OptionParser import grgsm import math import time class RadioInterfaceGRC(gr.top_block): def __init__(self, delay_correction=285.616e-6, osr=4, ppm=-0.799427, rx_freq=935e6+36*0.2e6, rx_gain=40, samp_rate=13e6/12.0, timing_advance=0, trx_base_port="5710", trx_remote_addr="127.0.0.1", tx_freq=935e6+36*0.2e6-45e6, tx_gain=40, uplink_shift=-(6.0/1625000*(156.25)*3)): gr.top_block.__init__(self, "Trx radio interface") ################################################## # Parameters ################################################## self.delay_correction = delay_correction self.osr = osr self.ppm = ppm self.rx_freq = rx_freq self.rx_gain = rx_gain self.samp_rate = samp_rate self.timing_advance = timing_advance self.trx_base_port = trx_base_port self.trx_remote_addr = trx_remote_addr self.tx_freq = tx_freq self.tx_gain = tx_gain self.uplink_shift = uplink_shift ################################################## # Blocks ################################################## self.uhd_usrp_source_0 = uhd.usrp_source( ",".join(("", "")), uhd.stream_args( cpu_format="fc32", channels=range(1), ), ) self.uhd_usrp_source_0.set_clock_rate(26e6, uhd.ALL_MBOARDS) self.uhd_usrp_source_0.set_samp_rate(samp_rate) self.uhd_usrp_source_0.set_center_freq(rx_freq, 0) self.uhd_usrp_source_0.set_gain(rx_gain, 0) self.uhd_usrp_source_0.set_antenna("RX2", 0) self.uhd_usrp_sink_0 = uhd.usrp_sink( ",".join(("", "")), uhd.stream_args( cpu_format="fc32", channels=range(1), ), "packet_len", ) self.uhd_usrp_sink_0.set_clock_rate(26e6, uhd.ALL_MBOARDS) self.uhd_usrp_sink_0.set_subdev_spec("A:B", 0) self.uhd_usrp_sink_0.set_samp_rate(samp_rate) self.uhd_usrp_sink_0.set_center_freq(tx_freq, 0) self.uhd_usrp_sink_0.set_gain(tx_gain, 0) self.uhd_usrp_sink_0.set_antenna("TX/RX", 0) self.ts_filter = grgsm.burst_timeslot_filter(0) self.low_pass_filter_0_0 = filter.fir_filter_ccf(1, firdes.low_pass( 1, samp_rate, 125e3, 5e3, firdes.WIN_HAMMING, 6.76)) self.gsm_txtime_setter_0 = grgsm.txtime_setter(None if (None is not None) else 0xffffffff, 0, 0, 0, 0, timing_advance, delay_correction+uplink_shift) self.gsm_trx_burst_if_0 = grgsm.trx_burst_if(trx_remote_addr, trx_base_port) self.gsm_receiver_0 = grgsm.receiver(4, ([0]), ([4]), False) self.gsm_preprocess_tx_burst_0 = grgsm.preprocess_tx_burst() self.gsm_msg_to_tag_0_0 = grgsm.msg_to_tag() self.gsm_msg_to_tag_0 = grgsm.msg_to_tag() self.gsm_gmsk_mod_0 = gsm_gmsk_mod( BT=0.3, pulse_duration=4, sps=osr, ) self.gsm_controlled_rotator_cc_0_0 = grgsm.controlled_rotator_cc(-ppm/1.0e6*2*math.pi*tx_freq/samp_rate) self.gsm_controlled_rotator_cc_0 = grgsm.controlled_rotator_cc(ppm/1.0e6*2*math.pi*rx_freq/samp_rate) self.gsm_clock_offset_control_0 = grgsm.clock_offset_control(rx_freq, samp_rate, osr) self.gsm_burst_type_filter_0 = grgsm.burst_type_filter(([3])) self.gsm_burst_to_fn_time_0 = grgsm.burst_to_fn_time() self.digital_burst_shaper_xx_0 = digital.burst_shaper_cc((firdes.window(firdes.WIN_HANN, 16, 0)), 0, 20, False, "packet_len") self.dict_toggle_sign = dict_toggle_sign() self.blocks_pdu_to_tagged_stream_0_0 = blocks.pdu_to_tagged_stream(blocks.byte_t, "packet_len") ################################################## # Connections ################################################## self.msg_connect((self.dict_toggle_sign, 'dict_out'), (self.gsm_msg_to_tag_0_0, 'msg')) self.msg_connect((self.gsm_burst_to_fn_time_0, 'fn_time_out'), (self.gsm_txtime_setter_0, 'fn_time')) self.msg_connect((self.gsm_burst_type_filter_0, 'bursts_out'), (self.gsm_burst_to_fn_time_0, 'bursts_in')) self.msg_connect((self.gsm_clock_offset_control_0, 'ctrl'), (self.dict_toggle_sign, 'dict_in')) self.msg_connect((self.gsm_clock_offset_control_0, 'ctrl'), (self.gsm_msg_to_tag_0, 'msg')) self.msg_connect((self.gsm_preprocess_tx_burst_0, 'bursts_out'), (self.blocks_pdu_to_tagged_stream_0_0, 'pdus')) self.msg_connect((self.gsm_receiver_0, 'C0'), (self.gsm_burst_type_filter_0, 'bursts_in')) self.msg_connect((self.gsm_receiver_0, 'measurements'), (self.gsm_clock_offset_control_0, 'measurements')) self.msg_connect((self.gsm_receiver_0, 'C0'), (self.ts_filter, 'in')) self.msg_connect((self.gsm_trx_burst_if_0, 'bursts'), (self.gsm_txtime_setter_0, 'bursts_in')) self.msg_connect((self.gsm_txtime_setter_0, 'bursts_out'), (self.gsm_preprocess_tx_burst_0, 'bursts_in')) self.msg_connect((self.ts_filter, 'out'), (self.gsm_trx_burst_if_0, 'bursts')) self.connect((self.blocks_pdu_to_tagged_stream_0_0, 0), (self.gsm_gmsk_mod_0, 0)) self.connect((self.digital_burst_shaper_xx_0, 0), (self.gsm_msg_to_tag_0_0, 0)) self.connect((self.gsm_controlled_rotator_cc_0, 0), (self.low_pass_filter_0_0, 0)) self.connect((self.gsm_controlled_rotator_cc_0_0, 0), (self.uhd_usrp_sink_0, 0)) self.connect((self.gsm_gmsk_mod_0, 0), (self.digital_burst_shaper_xx_0, 0)) self.connect((self.gsm_msg_to_tag_0, 0), (self.gsm_controlled_rotator_cc_0, 0)) self.connect((self.gsm_msg_to_tag_0_0, 0), (self.gsm_controlled_rotator_cc_0_0, 0)) self.connect((self.low_pass_filter_0_0, 0), (self.gsm_receiver_0, 0)) self.connect((self.uhd_usrp_source_0, 0), (self.gsm_msg_to_tag_0, 0)) def get_delay_correction(self): return self.delay_correction def set_delay_correction(self, delay_correction): self.delay_correction = delay_correction self.gsm_txtime_setter_0.set_delay_correction(self.delay_correction+self.uplink_shift) def get_osr(self): return self.osr def set_osr(self, osr): self.osr = osr self.gsm_gmsk_mod_0.set_sps(self.osr) def get_ppm(self): return self.ppm def set_ppm(self, ppm): self.ppm = ppm self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.rx_freq/self.samp_rate) self.gsm_controlled_rotator_cc_0_0.set_phase_inc(-self.ppm/1.0e6*2*math.pi*self.tx_freq/self.samp_rate) def get_rx_freq(self): return self.rx_freq def set_rx_freq(self, rx_freq): self.rx_freq = rx_freq self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.rx_freq/self.samp_rate) self.uhd_usrp_source_0.set_center_freq(self.rx_freq, 0) def get_rx_gain(self): return self.rx_gain def set_rx_gain(self, rx_gain): self.rx_gain = rx_gain self.uhd_usrp_source_0.set_gain(self.rx_gain, 0) def get_samp_rate(self): return self.samp_rate def set_samp_rate(self, samp_rate): self.samp_rate = samp_rate self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.rx_freq/self.samp_rate) self.gsm_controlled_rotator_cc_0_0.set_phase_inc(-self.ppm/1.0e6*2*math.pi*self.tx_freq/self.samp_rate) self.low_pass_filter_0_0.set_taps(firdes.low_pass(1, self.samp_rate, 125e3, 5e3, firdes.WIN_HAMMING, 6.76)) self.uhd_usrp_sink_0.set_samp_rate(self.samp_rate) self.uhd_usrp_source_0.set_samp_rate(self.samp_rate) def get_timing_advance(self): return self.timing_advance def set_timing_advance(self, timing_advance): self.timing_advance = timing_advance self.gsm_txtime_setter_0.set_timing_advance(self.timing_advance) def get_trx_base_port(self): return self.trx_base_port def set_trx_base_port(self, trx_base_port): self.trx_base_port = trx_base_port def get_trx_remote_addr(self): return self.trx_remote_addr def set_trx_remote_addr(self, trx_remote_addr): self.trx_remote_addr = trx_remote_addr def get_tx_freq(self): return self.tx_freq def set_tx_freq(self, tx_freq): self.tx_freq = tx_freq self.gsm_controlled_rotator_cc_0_0.set_phase_inc(-self.ppm/1.0e6*2*math.pi*self.tx_freq/self.samp_rate) self.uhd_usrp_sink_0.set_center_freq(self.tx_freq, 0) def get_tx_gain(self): return self.tx_gain def set_tx_gain(self, tx_gain): self.tx_gain = tx_gain self.uhd_usrp_sink_0.set_gain(self.tx_gain, 0) def get_uplink_shift(self): return self.uplink_shift def set_uplink_shift(self, uplink_shift): self.uplink_shift = uplink_shift self.gsm_txtime_setter_0.set_delay_correction(self.delay_correction+self.uplink_shift) def argument_parser(): parser = OptionParser(option_class=eng_option, usage="%prog: [options]") parser.add_option( "", "--delay-correction", dest="delay_correction", type="eng_float", default=eng_notation.num_to_str(285.616e-6), help="Set delay_correction [default=%default]") parser.add_option( "", "--osr", dest="osr", type="intx", default=4, help="Set OSR [default=%default]") parser.add_option( "", "--ppm", dest="ppm", type="eng_float", default=eng_notation.num_to_str(-0.799427), help="Set Clock offset correction [default=%default]") parser.add_option( "-d", "--rx-freq", dest="rx_freq", type="eng_float", default=eng_notation.num_to_str(935e6+36*0.2e6), help="Set rx_freq [default=%default]") parser.add_option( "-g", "--rx-gain", dest="rx_gain", type="eng_float", default=eng_notation.num_to_str(40), help="Set rx_gain [default=%default]") parser.add_option( "", "--samp-rate", dest="samp_rate", type="eng_float", default=eng_notation.num_to_str(13e6/12.0), help="Set samp_rate [default=%default]") parser.add_option( "", "--timing-advance", dest="timing_advance", type="eng_float", default=eng_notation.num_to_str(0), help="Set timing_advance [default=%default]") parser.add_option( "", "--trx-base-port", dest="trx_base_port", type="string", default="5710", help="Set 5710 [default=%default]") parser.add_option( "", "--trx-remote-addr", dest="trx_remote_addr", type="string", default="127.0.0.1", help="Set 127.0.0.1 [default=%default]") parser.add_option( "-u", "--tx-freq", dest="tx_freq", type="eng_float", default=eng_notation.num_to_str(935e6+36*0.2e6-45e6), help="Set tx_freq [default=%default]") parser.add_option( "-r", "--tx-gain", dest="tx_gain", type="eng_float", default=eng_notation.num_to_str(40), help="Set tx_gain [default=%default]") parser.add_option( "", "--uplink-shift", dest="uplink_shift", type="eng_float", default=eng_notation.num_to_str(-(6.0/1625000*(156.25)*3)), help="Set uplink_shift [default=%default]") return parser def main(top_block_cls=RadioInterfaceGRC, options=None): if options is None: options, _ = argument_parser().parse_args() tb = top_block_cls(delay_correction=options.delay_correction, osr=options.osr, ppm=options.ppm, rx_freq=options.rx_freq, rx_gain=options.rx_gain, samp_rate=options.samp_rate, timing_advance=options.timing_advance, trx_base_port=options.trx_base_port, trx_remote_addr=options.trx_remote_addr, tx_freq=options.tx_freq, tx_gain=options.tx_gain, uplink_shift=options.uplink_shift) tb.start() tb.wait() if __name__ == '__main__': main()