From 1cc264fb0c2072210102a23f46b83a9cc5d6a8d0 Mon Sep 17 00:00:00 2001 From: Piotr Krysik Date: Thu, 6 Sep 2018 19:57:57 +0200 Subject: Revert "grgsm_trx: Migrated argument parsing to argparse" that shouldn't be pushed This reverts commit c62a3d9f5517d0dda0c4dccd19fd6c0d9c66e038. --- apps/grgsm_trx | 203 ++++++++++++++----------- python/trx/radio_if.py | 399 ++++++++++++++++++++++++------------------------- 2 files changed, 311 insertions(+), 291 deletions(-) diff --git a/apps/grgsm_trx b/apps/grgsm_trx index 712b0b7..45312e6 100755 --- a/apps/grgsm_trx +++ b/apps/grgsm_trx @@ -4,7 +4,6 @@ # GR-GSM based transceiver # # (C) 2016-2018 by Vadim Yanitskiy -# (C) 2017-2018 by Piotr Krysik # # All Rights Reserved # @@ -31,40 +30,34 @@ from gnuradio import eng_notation from grgsm.trx import ctrl_if_bb from grgsm.trx import radio_if from grgsm.trx import fake_pm -from argparse import ArgumentParser COPYRIGHT = \ "Copyright (C) 2016-2018 by Vadim Yanitskiy \n" \ - "Copyright (C) 2017-2018 by Piotr Krysik \n" \ + "Copyright (C) 2017 by Piotr Krysik \n" \ "License GPLv2+: GNU GPL version 2 or later " \ "\n" \ "This is free software: you are free to change and redistribute it.\n" \ "There is NO WARRANTY, to the extent permitted by law.\n" -class grgsm_trx: - def __init__(self, - remote_addr, - bind_addr, - base_port, - args, - sample_rate, - rx_gain, - tx_gain, - rx_antenna, - tx_antenna, - freq_offset, - ppm): - self.remote_addr = remote_addr - self.bind_addr = bind_addr - self.base_port = base_port - self.phy_args = args - self.phy_sample_rate = sample_rate - self.phy_rx_gain = rx_gain - self.phy_tx_gain = tx_gain - self.phy_rx_antenna = rx_antenna - self.phy_tx_antenna = tx_antenna - self.phy_freq_offset = freq_offset - self.phy_ppm = ppm +class Application: + # Application variables + remote_addr = "127.0.0.1" + bind_addr = "0.0.0.0" + base_port = 6700 + + # PHY specific + phy_sample_rate = 4 * 1625000 / 6 + phy_freq_offset_hz = None + phy_tx_antenna = "TX/RX" + phy_rx_antenna = "RX2" + phy_rx_gain = 30 + phy_tx_gain = 10 + phy_args = "" + phy_ppm = 0 + + def __init__(self): + self.print_copyright() + self.parse_argv() # Set up signal handlers signal.signal(signal.SIGINT, self.sig_handler) @@ -73,10 +66,14 @@ class grgsm_trx: # Init Radio interface self.radio = radio_if(self.phy_args, self.phy_sample_rate, self.phy_rx_gain, self.phy_tx_gain, self.phy_ppm, - self.phy_rx_antenna, self.phy_tx_antenna, self.phy_freq_offset, + self.phy_rx_antenna, self.phy_tx_antenna, self.bind_addr, self.remote_addr, self.base_port) + # Optional frequency offset + if self.phy_freq_offset_hz is not None: + self.radio.freq_offset_hz = self.phy_freq_offset_hz + # Power measurement emulation # Noise: -120 .. -105 # BTS: -75 .. -50 @@ -98,73 +95,97 @@ class grgsm_trx: print("[i] Shutting down...") self.radio.shutdown() + def print_copyright(self): + print(COPYRIGHT) + + def print_help(self): + s = " Usage: " + sys.argv[0] + " [options]\n\n" \ + " Some help...\n" \ + " -h --help this text\n\n" + + # TRX specific + s += " TRX interface specific\n" \ + " -i --remote-addr Set remote address (default %s)\n" \ + " -b --bind-addr Set bind address (default %s)\n" \ + " -p --base-port Set base port number (default %d)\n\n" + + # PHY specific + s += " Radio interface specific\n" \ + " -a --device-args Set device arguments\n" \ + " -s --sample-rate Set sample rate\n" \ + " -g --rx-gain Set RX gain (default %d)\n" \ + " -G --tx-gain Set TX gain (default %d)\n" \ + " --rx-antenna Set RX antenna (default %s)\n" \ + " --tx-antenna Set TX antenna (default %s)\n" \ + " --freq-offset Shift baseband freq. (e.g. -500M)\n" \ + " --ppm Set frequency correction (default %d)\n" + + print(s % ( + self.remote_addr, + self.bind_addr, + self.base_port, + self.phy_rx_gain, + self.phy_tx_gain, + self.phy_rx_antenna, + self.phy_tx_antenna, + self.phy_ppm)) + + def parse_argv(self): + try: + opts, args = getopt.getopt(sys.argv[1:], + "i:b:p:a:s:g:G:h", + ["help", "remote-addr=", "bind-addr=", "base-port=", + "device-args=", "sample-rate=", "rx-gain=", "tx-gain=", + "ppm=", "rx-antenna=", "tx-antenna=", "freq-offset="]) + except getopt.GetoptError as err: + # Print(help and exit) + self.print_help() + print("[!] " + str(err)) + sys.exit(2) + + for o, v in opts: + if o in ("-h", "--help"): + self.print_help() + sys.exit(2) + + # TRX specific + elif o in ("-i", "--remote-addr"): + self.remote_addr = v + elif o in ("-b", "--bind-addr"): + self.bind_addr = v + elif o in ("-p", "--base-port"): + if int(v) >= 0 and int(v) <= 65535: + self.base_port = int(v) + else: + print("[!] The port number should be in range [0-65536]") + sys.exit(2) + + # PHY specific + elif o in ("-a", "--device-args"): + self.phy_args = v + elif o in ("-s", "--sample-rate"): + self.phy_sample_rate = int(v) + elif o in ("-g", "--rx-gain"): + self.phy_rx_gain = int(v) + elif o in ("-G", "--tx-gain"): + self.phy_tx_gain = int(v) + elif o in ("--rx-antenna"): + self.phy_rx_antenna = v + elif o in ("--tx-antenna"): + self.phy_tx_antenna = v + elif o in ("--ppm"): + self.phy_ppm = int(v) + elif o in ("--freq-offset"): + # Convert /\d+(\.\d+)?(M|k)?/ to Hz + offset_hz = eng_notation.str_to_num(v) + self.phy_freq_offset_hz = offset_hz + def sig_handler(self, signum, frame): print("Signal %d received" % signum) if signum is signal.SIGINT: self.shutdown() sys.exit(0) -def parse_args(): - description = 'Burst transceiver for GSM Mobile Station' - parser = ArgumentParser(prog="grgsm_trx", usage='%(prog)s [options]', - description=description) - # TRX specific - parser.add_argument("-i", "--remote-addr", dest="remote_addr", type=str, - default='127.0.0.1', - help="Set remote address default=%(default)s") - parser.add_argument("-b", "--bind-addr", dest="bind_addr", type=str, - default='0.0.0.0', - help="Set bind address default=%(default)s") - parser.add_argument( - "-p", "--base_port", dest="base_port", type=int, - default=6700, - help="Set base port number default=%(default)s") - - # PHY specific - parser.add_argument("-a", "--args", dest="args", type=str, - default="", - help="Set Device Arguments default=%(default)s") - parser.add_argument("-s", "--sample-rate", dest="sample_rate", type=float, - default=1083333.3333333333, - help="Set samp_rate default=%(default)s") - parser.add_argument("-g", "--rx-gain", dest="rx_gain", type=float, - default=30, - help="Set RX gain default=%(default)s") - parser.add_argument("-G", "--tx-gain", dest="tx_gain", type=float, - default=10, - help="Set TX gain default=%(default)s") - parser.add_argument("--rx-antenna", dest="rx_antenna", type=str, - default="RX2", - help="Set RX antenna") - parser.add_argument("--tx-antenna", dest="tx_antenna", type=str, - default='TX/RX', - help="Set TX antenna default=%(default)s") - parser.add_argument( - "--freq-offset", dest="freq_offset", type=float, - default=0, - help="Shift Tx and Rx frequencies default=%(default)s") - parser.add_argument("--ppm", dest="ppm", type=float, - default=0, - help="Set ppm default=%(default)s") - - return parser.parse_args() - -def main(): - print(COPYRIGHT) - options = parse_args() - app = grgsm_trx( - remote_addr=options.remote_addr, - bind_addr=options.bind_addr, - base_port=options.base_port, - args=options.args, - sample_rate=options.sample_rate, - rx_gain=options.rx_gain, - tx_gain=options.tx_gain, - rx_antenna=options.rx_antenna, - tx_antenna=options.tx_antenna, - freq_offset=options.freq_offset, - ppm=options.ppm) - app.run() - if __name__ == '__main__': - main() + app = Application() + app.run() diff --git a/python/trx/radio_if.py b/python/trx/radio_if.py index 17a0d00..407e724 100644 --- a/python/trx/radio_if.py +++ b/python/trx/radio_if.py @@ -59,252 +59,251 @@ class dict_toggle_sign(gr.basic_block): self.message_port_pub(pmt.intern("dict_out"), pmt.to_pmt(d)) class radio_if(gr.top_block): - # PHY specific variables - rx_freq = 935e6 - tx_freq = 890e6 - osr = 4 - - # Application state flags - trx_started = False - - # GSM timings (in microseconds [uS]) - # One timeslot duration is 576.9 μs = 15/26 ms, - # or 156.25 symbol periods (a symbol period is 48/13 μs) - GSM_SYM_PERIOD_uS = 48.0 / 13.0 - GSM_TS_PERIOD_uS = GSM_SYM_PERIOD_uS * 156.25 - GSM_UL_DL_SHIFT_uS = -(GSM_TS_PERIOD_uS * 3) - - # FIXME: shall be measured (automatically?) for - # particular device and particular clock rate. - # The current value is measured for USRP B2X0 at 26e6. - delay_correction = (285.616 + 2 * GSM_SYM_PERIOD_uS) * 1e-6 - - def __init__(self, phy_args, phy_sample_rate, - phy_rx_gain, phy_tx_gain, phy_ppm, - phy_rx_antenna, phy_tx_antenna, - phy_freq_offset, - trx_bind_addr, trx_remote_addr, - trx_base_port): + # PHY specific variables + freq_offset_hz = None + rx_freq = 935e6 + tx_freq = 890e6 + osr = 4 + + # Application state flags + trx_started = False + + # GSM timings (in microseconds [uS]) + # One timeslot duration is 576.9 μs = 15/26 ms, + # or 156.25 symbol periods (a symbol period is 48/13 μs) + GSM_SYM_PERIOD_uS = 48.0 / 13.0 + GSM_TS_PERIOD_uS = GSM_SYM_PERIOD_uS * 156.25 + GSM_UL_DL_SHIFT_uS = -(GSM_TS_PERIOD_uS * 3) + + # FIXME: shall be measured (automatically?) for + # particular device and particular clock rate. + # The current value is measured for USRP B2X0 at 26e6. + delay_correction = (285.616 + 2 * GSM_SYM_PERIOD_uS) * 1e-6 + + def __init__(self, phy_args, phy_sample_rate, + phy_rx_gain, phy_tx_gain, phy_ppm, + phy_rx_antenna, phy_tx_antenna, + trx_bind_addr, trx_remote_addr, + trx_base_port): - print("[i] Init Radio interface (L:%s:%u <-> R:%s:%u)" - % (trx_bind_addr, trx_base_port + 2, - trx_remote_addr, trx_base_port + 102)) + print("[i] Init Radio interface (L:%s:%u <-> R:%s:%u)" + % (trx_bind_addr, trx_base_port + 2, + trx_remote_addr, trx_base_port + 102)) - # PHY specific variables - self.sample_rate = phy_sample_rate - self.rx_gain = phy_rx_gain - self.tx_gain = phy_tx_gain - self.phy_freq_offset = phy_freq_offset - self.ppm = phy_ppm + # PHY specific variables + self.sample_rate = phy_sample_rate + self.rx_gain = phy_rx_gain + self.tx_gain = phy_tx_gain + self.ppm = phy_ppm - gr.top_block.__init__(self, "GR-GSM TRX") - - # TRX Burst Interface - self.trx_burst_if = grgsm.trx_burst_if( - trx_bind_addr, trx_remote_addr, - str(trx_base_port)) + gr.top_block.__init__(self, "GR-GSM TRX") - # RX path definition - self.phy_src = uhd.usrp_source(phy_args, - uhd.stream_args(cpu_format="fc32", - channels=range(1))) + # TRX Burst Interface + self.trx_burst_if = grgsm.trx_burst_if( + trx_bind_addr, trx_remote_addr, + str(trx_base_port)) - self.phy_src.set_clock_rate(26e6, uhd.ALL_MBOARDS) - self.phy_src.set_center_freq(self.rx_freq, 0) - self.phy_src.set_antenna(phy_rx_antenna, 0) - self.phy_src.set_samp_rate(phy_sample_rate) - self.phy_src.set_bandwidth(650e3, 0) - self.phy_src.set_gain(phy_rx_gain) + # RX path definition + self.phy_src = uhd.usrp_source(phy_args, + uhd.stream_args(cpu_format="fc32", + channels=range(1))) - self.msg_to_tag_src = grgsm.msg_to_tag() + self.phy_src.set_clock_rate(26e6, uhd.ALL_MBOARDS) + self.phy_src.set_center_freq(self.rx_freq, 0) + self.phy_src.set_antenna(phy_rx_antenna, 0) + self.phy_src.set_samp_rate(phy_sample_rate) + self.phy_src.set_bandwidth(650e3, 0) + self.phy_src.set_gain(phy_rx_gain) - self.rotator_src = grgsm.controlled_rotator_cc( - self.calc_phase_inc(self.rx_freq)) + self.msg_to_tag_src = grgsm.msg_to_tag() - self.lpf = filter.fir_filter_ccf(1, firdes.low_pass( - 1, phy_sample_rate, 125e3, 5e3, firdes.WIN_HAMMING, 6.76)) + self.rotator_src = grgsm.controlled_rotator_cc( + self.calc_phase_inc(self.rx_freq)) - self.gsm_receiver = grgsm.receiver(self.osr, ([0]), ([])) + self.lpf = filter.fir_filter_ccf(1, firdes.low_pass( + 1, phy_sample_rate, 125e3, 5e3, firdes.WIN_HAMMING, 6.76)) - self.ts_filter = grgsm.burst_timeslot_filter(0) - self.ts_filter.set_policy(grgsm.FILTER_POLICY_DROP_ALL) + self.gsm_receiver = grgsm.receiver(self.osr, ([0]), ([])) - # Connections - self.connect( - (self.phy_src, 0), - (self.msg_to_tag_src, 0)) + self.ts_filter = grgsm.burst_timeslot_filter(0) + self.ts_filter.set_policy(grgsm.FILTER_POLICY_DROP_ALL) - self.connect( - (self.msg_to_tag_src, 0), - (self.rotator_src, 0)) + # Connections + self.connect( + (self.phy_src, 0), + (self.msg_to_tag_src, 0)) - self.connect( - (self.rotator_src, 0), - (self.lpf, 0)) + self.connect( + (self.msg_to_tag_src, 0), + (self.rotator_src, 0)) - self.connect( - (self.lpf, 0), - (self.gsm_receiver, 0)) + self.connect( + (self.rotator_src, 0), + (self.lpf, 0)) - self.msg_connect( - (self.gsm_receiver, 'C0'), - (self.ts_filter, 'in')) + self.connect( + (self.lpf, 0), + (self.gsm_receiver, 0)) - self.msg_connect( - (self.ts_filter, 'out'), - (self.trx_burst_if, 'bursts')) + self.msg_connect( + (self.gsm_receiver, 'C0'), + (self.ts_filter, 'in')) + self.msg_connect( + (self.ts_filter, 'out'), + (self.trx_burst_if, 'bursts')) - # TX Path Definition - self.phy_sink = uhd.usrp_sink(phy_args, - uhd.stream_args(cpu_format="fc32", - channels=range(1)), "packet_len") - self.phy_sink.set_clock_rate(26e6, uhd.ALL_MBOARDS) - self.phy_sink.set_antenna(phy_tx_antenna, 0) - self.phy_sink.set_samp_rate(phy_sample_rate) - self.phy_sink.set_center_freq(self.tx_freq, 0) - self.phy_sink.set_gain(self.tx_gain) + # TX Path Definition + self.phy_sink = uhd.usrp_sink(phy_args, + uhd.stream_args(cpu_format="fc32", + channels=range(1)), "packet_len") - self.tx_time_setter = grgsm.txtime_setter( - 0xffffffff, 0, 0, 0, 0, 0, - self.delay_correction + self.GSM_UL_DL_SHIFT_uS * 1e-6) + self.phy_sink.set_clock_rate(26e6, uhd.ALL_MBOARDS) + self.phy_sink.set_antenna(phy_tx_antenna, 0) + self.phy_sink.set_samp_rate(phy_sample_rate) + self.phy_sink.set_center_freq(self.tx_freq, 0) + self.phy_sink.set_gain(self.tx_gain) - self.tx_burst_proc = grgsm.preprocess_tx_burst() + self.tx_time_setter = grgsm.txtime_setter( + 0xffffffff, 0, 0, 0, 0, 0, + self.delay_correction + self.GSM_UL_DL_SHIFT_uS * 1e-6) - self.pdu_to_tagged_stream = blocks.pdu_to_tagged_stream( - blocks.byte_t, 'packet_len') + self.tx_burst_proc = grgsm.preprocess_tx_burst() - self.gmsk_mod = grgsm.gsm_gmsk_mod( - BT = 0.3, pulse_duration = 4, sps = self.osr) + self.pdu_to_tagged_stream = blocks.pdu_to_tagged_stream( + blocks.byte_t, 'packet_len') - self.burst_shaper = digital.burst_shaper_cc( - (firdes.window(firdes.WIN_HANN, 16, 0)), - 0, 20, False, "packet_len") + self.gmsk_mod = grgsm.gsm_gmsk_mod( + BT = 0.3, pulse_duration = 4, sps = self.osr) - self.msg_to_tag_sink = grgsm.msg_to_tag() + self.burst_shaper = digital.burst_shaper_cc( + (firdes.window(firdes.WIN_HANN, 16, 0)), + 0, 20, False, "packet_len") - self.rotator_sink = grgsm.controlled_rotator_cc( - -self.calc_phase_inc(self.tx_freq)) + self.msg_to_tag_sink = grgsm.msg_to_tag() - # Connections - self.msg_connect( - (self.trx_burst_if, 'bursts'), - (self.tx_time_setter, 'bursts_in')) + self.rotator_sink = grgsm.controlled_rotator_cc( + -self.calc_phase_inc(self.tx_freq)) - self.msg_connect( - (self.tx_time_setter, 'bursts_out'), - (self.tx_burst_proc, 'bursts_in')) + # Connections + self.msg_connect( + (self.trx_burst_if, 'bursts'), + (self.tx_time_setter, 'bursts_in')) - self.msg_connect( - (self.tx_burst_proc, 'bursts_out'), - (self.pdu_to_tagged_stream, 'pdus')) + self.msg_connect( + (self.tx_time_setter, 'bursts_out'), + (self.tx_burst_proc, 'bursts_in')) - self.connect( - (self.pdu_to_tagged_stream, 0), - (self.gmsk_mod, 0)) + self.msg_connect( + (self.tx_burst_proc, 'bursts_out'), + (self.pdu_to_tagged_stream, 'pdus')) - self.connect( - (self.gmsk_mod, 0), - (self.burst_shaper, 0)) + self.connect( + (self.pdu_to_tagged_stream, 0), + (self.gmsk_mod, 0)) - self.connect( - (self.burst_shaper, 0), - (self.msg_to_tag_sink, 0)) + self.connect( + (self.gmsk_mod, 0), + (self.burst_shaper, 0)) - self.connect( - (self.msg_to_tag_sink, 0), - (self.rotator_sink, 0)) + self.connect( + (self.burst_shaper, 0), + (self.msg_to_tag_sink, 0)) - self.connect( - (self.rotator_sink, 0), - (self.phy_sink, 0)) + self.connect( + (self.msg_to_tag_sink, 0), + (self.rotator_sink, 0)) + self.connect( + (self.rotator_sink, 0), + (self.phy_sink, 0)) - # RX & TX synchronization - self.bt_filter = grgsm.burst_type_filter([3]) - self.burst_to_fn_time = grgsm.burst_to_fn_time() - # Connections - self.msg_connect( - (self.gsm_receiver, 'C0'), - (self.bt_filter, 'bursts_in')) + # RX & TX synchronization + self.bt_filter = grgsm.burst_type_filter([3]) + self.burst_to_fn_time = grgsm.burst_to_fn_time() - self.msg_connect( - (self.bt_filter, 'bursts_out'), - (self.burst_to_fn_time, 'bursts_in')) + # Connections + self.msg_connect( + (self.gsm_receiver, 'C0'), + (self.bt_filter, 'bursts_in')) - self.msg_connect( - (self.burst_to_fn_time, 'fn_time_out'), - (self.tx_time_setter, 'fn_time')) + self.msg_connect( + (self.bt_filter, 'bursts_out'), + (self.burst_to_fn_time, 'bursts_in')) + self.msg_connect( + (self.burst_to_fn_time, 'fn_time_out'), + (self.tx_time_setter, 'fn_time')) - # AFC (Automatic Frequency Correction) - self.gsm_clck_ctrl = grgsm.clock_offset_control( - self.rx_freq, phy_sample_rate, osr = self.osr) - self.dict_toggle_sign = dict_toggle_sign() + # AFC (Automatic Frequency Correction) + self.gsm_clck_ctrl = grgsm.clock_offset_control( + self.rx_freq, phy_sample_rate, osr = self.osr) - # Connections - self.msg_connect( - (self.gsm_receiver, 'measurements'), - (self.gsm_clck_ctrl, 'measurements')) + self.dict_toggle_sign = dict_toggle_sign() - self.msg_connect( - (self.gsm_clck_ctrl, 'ctrl'), - (self.msg_to_tag_src, 'msg')) + # Connections + self.msg_connect( + (self.gsm_receiver, 'measurements'), + (self.gsm_clck_ctrl, 'measurements')) - self.msg_connect( - (self.gsm_clck_ctrl, 'ctrl'), - (self.dict_toggle_sign, 'dict_in')) + self.msg_connect( + (self.gsm_clck_ctrl, 'ctrl'), + (self.msg_to_tag_src, 'msg')) - self.msg_connect( - (self.dict_toggle_sign, 'dict_out'), - (self.msg_to_tag_sink, 'msg')) + self.msg_connect( + (self.gsm_clck_ctrl, 'ctrl'), + (self.dict_toggle_sign, 'dict_in')) + self.msg_connect( + (self.dict_toggle_sign, 'dict_out'), + (self.msg_to_tag_sink, 'msg')) - # Some UHD devices (such as UmTRX) do start the clock - # not from 0, so it's required to reset it manually. - # Resetting UHD source will also affect the sink. - self.phy_src.set_time_now(uhd.time_spec(0.0)) - def shutdown(self): - print("[i] Shutdown Radio interface") - self.stop() - self.wait() - - def calc_phase_inc(self, fc): - return self.ppm / 1.0e6 * 2 * pi * fc / self.sample_rate - - def set_rx_freq(self, fc): - if self.phy_freq_offset != 0: - fc += self.phy_freq_offset - print("[#] Shifting RX freq. to %s (offset is %s)" - % (eng_notation.num_to_str(fc), - eng_notation.num_to_str(self.freq_offset))) - self.phy_src.set_center_freq(fc, 0) - self.rotator_src.set_phase_inc(self.calc_phase_inc(fc)) - self.rx_freq = fc - - def set_tx_freq(self, fc): - if self.phy_freq_offset != 0: - fc += self.phy_freq_offset - print("[#] Shifting TX freq. to %s (offset is %s)" - % (eng_notation.num_to_str(fc), - eng_notation.num_to_str(self.freq_offset))) - self.phy_sink.set_center_freq(fc, 0) - self.rotator_sink.set_phase_inc(-self.calc_phase_inc(fc)) - self.tx_freq = fc - - def set_rx_gain(self, gain): - self.phy_src.set_gain(gain, 0) - self.rx_gain = gain - - def set_tx_gain(self, gain): - self.phy_sink.set_gain(gain, 0) - self.tx_gain = gain - - def set_ta(self, ta): - print("[i] Setting TA value %d" % ta) - advance_time_sec = ta * self.GSM_SYM_PERIOD_uS * 1e-6 - self.tx_time_setter.set_timing_advance(advance_time_sec) + # Some UHD devices (such as UmTRX) do start the clock + # not from 0, so it's required to reset it manually. + # Resetting UHD source will also affect the sink. + self.phy_src.set_time_now(uhd.time_spec(0.0)) + + def shutdown(self): + print("[i] Shutdown Radio interface") + self.stop() + self.wait() + + def calc_phase_inc(self, fc): + return self.ppm / 1.0e6 * 2 * pi * fc / self.sample_rate + + def set_rx_freq(self, fc): + if self.freq_offset_hz is not None: + fc += self.freq_offset_hz + print("[#] Shifting RX freq. to %s (offset is %s)" + % (eng_notation.num_to_str(fc), + eng_notation.num_to_str(self.freq_offset_hz))) + self.phy_src.set_center_freq(fc, 0) + self.rotator_src.set_phase_inc(self.calc_phase_inc(fc)) + self.rx_freq = fc + + def set_tx_freq(self, fc): + if self.freq_offset_hz is not None: + fc += self.freq_offset_hz + print("[#] Shifting TX freq. to %s (offset is %s)" + % (eng_notation.num_to_str(fc), + eng_notation.num_to_str(self.freq_offset_hz))) + self.phy_sink.set_center_freq(fc, 0) + self.rotator_sink.set_phase_inc(-self.calc_phase_inc(fc)) + self.tx_freq = fc + + def set_rx_gain(self, gain): + self.phy_src.set_gain(gain, 0) + self.rx_gain = gain + + def set_tx_gain(self, gain): + self.phy_sink.set_gain(gain, 0) + self.tx_gain = gain + + def set_ta(self, ta): + print("[i] Setting TA value %d" % ta) + advance_time_sec = ta * self.GSM_SYM_PERIOD_uS * 1e-6 + self.tx_time_setter.set_timing_advance(advance_time_sec) -- cgit v1.2.3