Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 1 | #!/usr/bin/env python2 |
| 2 | # -*- coding: utf-8 -*- |
| 3 | |
| 4 | # GR-GSM based transceiver |
| 5 | # Follow graph implementation |
| 6 | # |
Vadim Yanitskiy | 1fe2825 | 2019-01-19 10:16:27 +0700 | [diff] [blame] | 7 | # (C) 2016-2019 by Vadim Yanitskiy <axilirator@gmail.com> |
Piotr Krysik | d2f162f | 2017-11-30 12:50:00 +0100 | [diff] [blame] | 8 | # (C) 2017 by Piotr Krysik <ptrkrysik@gmail.com> |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 9 | # |
| 10 | # All Rights Reserved |
| 11 | # |
| 12 | # This program is free software; you can redistribute it and/or modify |
| 13 | # it under the terms of the GNU General Public License as published by |
| 14 | # the Free Software Foundation; either version 2 of the License, or |
| 15 | # (at your option) any later version. |
| 16 | # |
| 17 | # This program is distributed in the hope that it will be useful, |
| 18 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | # GNU General Public License for more details. |
| 21 | # |
| 22 | # You should have received a copy of the GNU General Public License along |
| 23 | # with this program; if not, write to the Free Software Foundation, Inc., |
| 24 | # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 25 | |
| 26 | import pmt |
| 27 | import time |
| 28 | import grgsm |
Vadim Yanitskiy | 7da82f4 | 2019-01-19 09:28:23 +0700 | [diff] [blame] | 29 | import random |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 30 | |
| 31 | from math import pi |
| 32 | |
Vadim Yanitskiy | 97dc84e | 2018-08-10 05:29:23 +0700 | [diff] [blame] | 33 | from gnuradio import eng_notation |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 34 | from gnuradio import digital |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 35 | from gnuradio import blocks |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 36 | from gnuradio import uhd |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 37 | from gnuradio import gr |
| 38 | |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 39 | from gnuradio import filter |
| 40 | from gnuradio.filter import firdes |
| 41 | |
Vadim Yanitskiy | bd4daec | 2018-12-20 09:32:56 +0700 | [diff] [blame] | 42 | from dict_toggle_sign import dict_toggle_sign |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 43 | |
Vadim Yanitskiy | f237f1a | 2018-12-20 09:49:56 +0700 | [diff] [blame] | 44 | class RadioInterface(gr.top_block): |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 45 | # PHY specific variables |
Vadim Yanitskiy | 1fe2825 | 2019-01-19 10:16:27 +0700 | [diff] [blame] | 46 | rx_freq = None |
| 47 | tx_freq = None |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 48 | osr = 4 |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 49 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 50 | # GSM timings (in microseconds [uS]) |
| 51 | # One timeslot duration is 576.9 μs = 15/26 ms, |
| 52 | # or 156.25 symbol periods (a symbol period is 48/13 μs) |
| 53 | GSM_SYM_PERIOD_uS = 48.0 / 13.0 |
| 54 | GSM_TS_PERIOD_uS = GSM_SYM_PERIOD_uS * 156.25 |
| 55 | GSM_UL_DL_SHIFT_uS = -(GSM_TS_PERIOD_uS * 3) |
Vadim Yanitskiy | 9dded9b | 2017-12-05 01:00:51 +0700 | [diff] [blame] | 56 | |
Piotr Krysik | b3d5c57 | 2018-09-12 00:35:05 +0700 | [diff] [blame] | 57 | GSM_SYM_RATE = (1.0 / GSM_SYM_PERIOD_uS) * 1e6 |
| 58 | SAMPLE_RATE = GSM_SYM_RATE * osr |
Vadim Yanitskiy | 38baac9 | 2018-09-07 19:09:12 +0700 | [diff] [blame] | 59 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 60 | # FIXME: shall be measured (automatically?) for |
| 61 | # particular device and particular clock rate. |
| 62 | # The current value is measured for USRP B2X0 at 26e6. |
| 63 | delay_correction = (285.616 + 2 * GSM_SYM_PERIOD_uS) * 1e-6 |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 64 | |
Vadim Yanitskiy | 1fe2825 | 2019-01-19 10:16:27 +0700 | [diff] [blame] | 65 | # Dummy freq. value that is used during initialization |
| 66 | # basically, the DL freq. of ARFCN 0 |
| 67 | DUMMY_FREQ = 935e6 |
| 68 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 69 | def __init__(self, phy_args, phy_sample_rate, |
| 70 | phy_rx_gain, phy_tx_gain, phy_ppm, |
| 71 | phy_rx_antenna, phy_tx_antenna, |
Piotr Krysik | b8632ff | 2018-09-13 15:42:55 +0200 | [diff] [blame] | 72 | phy_freq_offset, trx_bind_addr, |
Piotr Krysik | 0631767 | 2018-09-13 14:41:06 +0200 | [diff] [blame] | 73 | trx_remote_addr, trx_base_port): |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 74 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 75 | print("[i] Init Radio interface (L:%s:%u <-> R:%s:%u)" |
| 76 | % (trx_bind_addr, trx_base_port + 2, |
| 77 | trx_remote_addr, trx_base_port + 102)) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 78 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 79 | # PHY specific variables |
| 80 | self.sample_rate = phy_sample_rate |
| 81 | self.rx_gain = phy_rx_gain |
| 82 | self.tx_gain = phy_tx_gain |
| 83 | self.ppm = phy_ppm |
Piotr Krysik | b8632ff | 2018-09-13 15:42:55 +0200 | [diff] [blame] | 84 | self.freq_offset = phy_freq_offset |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 85 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 86 | gr.top_block.__init__(self, "GR-GSM TRX") |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 87 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 88 | # TRX Burst Interface |
| 89 | self.trx_burst_if = grgsm.trx_burst_if( |
| 90 | trx_bind_addr, trx_remote_addr, |
| 91 | str(trx_base_port)) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 92 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 93 | # RX path definition |
| 94 | self.phy_src = uhd.usrp_source(phy_args, |
| 95 | uhd.stream_args(cpu_format="fc32", |
| 96 | channels=range(1))) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 97 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 98 | self.phy_src.set_clock_rate(26e6, uhd.ALL_MBOARDS) |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 99 | self.phy_src.set_antenna(phy_rx_antenna, 0) |
| 100 | self.phy_src.set_samp_rate(phy_sample_rate) |
| 101 | self.phy_src.set_bandwidth(650e3, 0) |
| 102 | self.phy_src.set_gain(phy_rx_gain) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 103 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 104 | self.msg_to_tag_src = grgsm.msg_to_tag() |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 105 | |
Vadim Yanitskiy | 1fe2825 | 2019-01-19 10:16:27 +0700 | [diff] [blame] | 106 | self.rotator_src = grgsm.controlled_rotator_cc(0.0) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 107 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 108 | self.lpf = filter.fir_filter_ccf(1, firdes.low_pass( |
| 109 | 1, phy_sample_rate, 125e3, 5e3, firdes.WIN_HAMMING, 6.76)) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 110 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 111 | self.gsm_receiver = grgsm.receiver(self.osr, ([0]), ([])) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 112 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 113 | self.ts_filter = grgsm.burst_timeslot_filter(0) |
| 114 | self.ts_filter.set_policy(grgsm.FILTER_POLICY_DROP_ALL) |
Vadim Yanitskiy | 962e2d8 | 2017-10-17 09:24:55 +0700 | [diff] [blame] | 115 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 116 | # Connections |
| 117 | self.connect( |
| 118 | (self.phy_src, 0), |
| 119 | (self.msg_to_tag_src, 0)) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 120 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 121 | self.connect( |
| 122 | (self.msg_to_tag_src, 0), |
| 123 | (self.rotator_src, 0)) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 124 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 125 | self.connect( |
| 126 | (self.rotator_src, 0), |
| 127 | (self.lpf, 0)) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 128 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 129 | self.connect( |
| 130 | (self.lpf, 0), |
| 131 | (self.gsm_receiver, 0)) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 132 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 133 | self.msg_connect( |
| 134 | (self.gsm_receiver, 'C0'), |
| 135 | (self.ts_filter, 'in')) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 136 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 137 | self.msg_connect( |
| 138 | (self.ts_filter, 'out'), |
| 139 | (self.trx_burst_if, 'bursts')) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 140 | |
Vadim Yanitskiy | 962e2d8 | 2017-10-17 09:24:55 +0700 | [diff] [blame] | 141 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 142 | # TX Path Definition |
| 143 | self.phy_sink = uhd.usrp_sink(phy_args, |
| 144 | uhd.stream_args(cpu_format="fc32", |
| 145 | channels=range(1)), "packet_len") |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 146 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 147 | self.phy_sink.set_clock_rate(26e6, uhd.ALL_MBOARDS) |
| 148 | self.phy_sink.set_antenna(phy_tx_antenna, 0) |
| 149 | self.phy_sink.set_samp_rate(phy_sample_rate) |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 150 | self.phy_sink.set_gain(self.tx_gain) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 151 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 152 | self.tx_time_setter = grgsm.txtime_setter( |
| 153 | 0xffffffff, 0, 0, 0, 0, 0, |
| 154 | self.delay_correction + self.GSM_UL_DL_SHIFT_uS * 1e-6) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 155 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 156 | self.tx_burst_proc = grgsm.preprocess_tx_burst() |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 157 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 158 | self.pdu_to_tagged_stream = blocks.pdu_to_tagged_stream( |
| 159 | blocks.byte_t, 'packet_len') |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 160 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 161 | self.gmsk_mod = grgsm.gsm_gmsk_mod( |
| 162 | BT = 0.3, pulse_duration = 4, sps = self.osr) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 163 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 164 | self.burst_shaper = digital.burst_shaper_cc( |
| 165 | (firdes.window(firdes.WIN_HANN, 16, 0)), |
| 166 | 0, 20, False, "packet_len") |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 167 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 168 | self.msg_to_tag_sink = grgsm.msg_to_tag() |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 169 | |
Vadim Yanitskiy | 1fe2825 | 2019-01-19 10:16:27 +0700 | [diff] [blame] | 170 | self.rotator_sink = grgsm.controlled_rotator_cc(0.0) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 171 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 172 | # Connections |
| 173 | self.msg_connect( |
| 174 | (self.trx_burst_if, 'bursts'), |
| 175 | (self.tx_time_setter, 'bursts_in')) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 176 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 177 | self.msg_connect( |
| 178 | (self.tx_time_setter, 'bursts_out'), |
| 179 | (self.tx_burst_proc, 'bursts_in')) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 180 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 181 | self.msg_connect( |
| 182 | (self.tx_burst_proc, 'bursts_out'), |
| 183 | (self.pdu_to_tagged_stream, 'pdus')) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 184 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 185 | self.connect( |
| 186 | (self.pdu_to_tagged_stream, 0), |
| 187 | (self.gmsk_mod, 0)) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 188 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 189 | self.connect( |
| 190 | (self.gmsk_mod, 0), |
| 191 | (self.burst_shaper, 0)) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 192 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 193 | self.connect( |
| 194 | (self.burst_shaper, 0), |
| 195 | (self.msg_to_tag_sink, 0)) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 196 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 197 | self.connect( |
| 198 | (self.msg_to_tag_sink, 0), |
| 199 | (self.rotator_sink, 0)) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 200 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 201 | self.connect( |
| 202 | (self.rotator_sink, 0), |
| 203 | (self.phy_sink, 0)) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 204 | |
| 205 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 206 | # RX & TX synchronization |
| 207 | self.bt_filter = grgsm.burst_type_filter([3]) |
| 208 | self.burst_to_fn_time = grgsm.burst_to_fn_time() |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 209 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 210 | # Connections |
| 211 | self.msg_connect( |
| 212 | (self.gsm_receiver, 'C0'), |
| 213 | (self.bt_filter, 'bursts_in')) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 214 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 215 | self.msg_connect( |
| 216 | (self.bt_filter, 'bursts_out'), |
| 217 | (self.burst_to_fn_time, 'bursts_in')) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 218 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 219 | self.msg_connect( |
| 220 | (self.burst_to_fn_time, 'fn_time_out'), |
| 221 | (self.tx_time_setter, 'fn_time')) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 222 | |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 223 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 224 | # AFC (Automatic Frequency Correction) |
Vadim Yanitskiy | 1fe2825 | 2019-01-19 10:16:27 +0700 | [diff] [blame] | 225 | # NOTE: dummy frequency is used during init |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 226 | self.gsm_clck_ctrl = grgsm.clock_offset_control( |
Vadim Yanitskiy | 1fe2825 | 2019-01-19 10:16:27 +0700 | [diff] [blame] | 227 | self.DUMMY_FREQ, phy_sample_rate, osr = self.osr) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 228 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 229 | self.dict_toggle_sign = dict_toggle_sign() |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 230 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 231 | # Connections |
| 232 | self.msg_connect( |
| 233 | (self.gsm_receiver, 'measurements'), |
| 234 | (self.gsm_clck_ctrl, 'measurements')) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 235 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 236 | self.msg_connect( |
| 237 | (self.gsm_clck_ctrl, 'ctrl'), |
| 238 | (self.msg_to_tag_src, 'msg')) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 239 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 240 | self.msg_connect( |
| 241 | (self.gsm_clck_ctrl, 'ctrl'), |
| 242 | (self.dict_toggle_sign, 'dict_in')) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 243 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 244 | self.msg_connect( |
| 245 | (self.dict_toggle_sign, 'dict_out'), |
| 246 | (self.msg_to_tag_sink, 'msg')) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 247 | |
Vadim Yanitskiy | 0017a35 | 2018-03-03 23:37:30 +0700 | [diff] [blame] | 248 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 249 | # Some UHD devices (such as UmTRX) do start the clock |
| 250 | # not from 0, so it's required to reset it manually. |
| 251 | # Resetting UHD source will also affect the sink. |
| 252 | self.phy_src.set_time_now(uhd.time_spec(0.0)) |
Vadim Yanitskiy | 0017a35 | 2018-03-03 23:37:30 +0700 | [diff] [blame] | 253 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 254 | def shutdown(self): |
| 255 | print("[i] Shutdown Radio interface") |
| 256 | self.stop() |
| 257 | self.wait() |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 258 | |
Vadim Yanitskiy | b7a272e | 2019-01-19 10:18:10 +0700 | [diff] [blame] | 259 | @property |
| 260 | def ready(self): |
| 261 | # RX / TX frequencies shall be set |
| 262 | if self.rx_freq is None: |
| 263 | return False |
| 264 | if self.tx_freq is None: |
| 265 | return False |
| 266 | |
| 267 | return True |
| 268 | |
Vadim Yanitskiy | baebe45 | 2019-01-19 10:20:59 +0700 | [diff] [blame] | 269 | def reset(self): |
| 270 | # TODO: do we need to reset both RX / TX freq.? |
| 271 | # self.rx_freq = None |
| 272 | # self.tx_freq = None |
| 273 | self.set_ta(0) |
| 274 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 275 | def calc_phase_inc(self, fc): |
| 276 | return self.ppm / 1.0e6 * 2 * pi * fc / self.sample_rate |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 277 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 278 | def set_rx_freq(self, fc): |
Vadim Yanitskiy | 8bd9e15 | 2019-01-19 10:35:55 +0700 | [diff] [blame] | 279 | if self.freq_offset != 0: |
| 280 | fc += self.freq_offset |
| 281 | print("[#] Shifting RX freq. to %s (offset is %s)" |
| 282 | % (eng_notation.num_to_str(fc), |
| 283 | eng_notation.num_to_str(self.freq_offset))) |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 284 | self.phy_src.set_center_freq(fc, 0) |
| 285 | self.rotator_src.set_phase_inc(self.calc_phase_inc(fc)) |
Vadim Yanitskiy | 5823a41 | 2019-01-19 10:39:51 +0700 | [diff] [blame] | 286 | self.gsm_clck_ctrl.set_fc(fc) |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 287 | self.rx_freq = fc |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 288 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 289 | def set_tx_freq(self, fc): |
Vadim Yanitskiy | 8bd9e15 | 2019-01-19 10:35:55 +0700 | [diff] [blame] | 290 | if self.freq_offset != 0: |
| 291 | fc += self.freq_offset |
| 292 | print("[#] Shifting TX freq. to %s (offset is %s)" |
| 293 | % (eng_notation.num_to_str(fc), |
| 294 | eng_notation.num_to_str(self.freq_offset))) |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 295 | self.phy_sink.set_center_freq(fc, 0) |
| 296 | self.rotator_sink.set_phase_inc(-self.calc_phase_inc(fc)) |
| 297 | self.tx_freq = fc |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 298 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 299 | def set_rx_gain(self, gain): |
| 300 | self.phy_src.set_gain(gain, 0) |
| 301 | self.rx_gain = gain |
Vadim Yanitskiy | 01c6afd | 2017-10-19 01:14:24 +0700 | [diff] [blame] | 302 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 303 | def set_tx_gain(self, gain): |
| 304 | self.phy_sink.set_gain(gain, 0) |
| 305 | self.tx_gain = gain |
Vadim Yanitskiy | 34266e7 | 2017-12-05 01:01:43 +0700 | [diff] [blame] | 306 | |
Vadim Yanitskiy | 180a037 | 2019-01-19 10:22:59 +0700 | [diff] [blame] | 307 | def set_slot(self, slot, config): |
| 308 | print("[i] Configure timeslot filter to: %s" |
| 309 | % ("drop all" if config == 0 else "tn=%d" % slot)) |
| 310 | |
| 311 | if config == 0: |
| 312 | # Value 0 is used for deactivation |
| 313 | self.ts_filter.set_policy(grgsm.FILTER_POLICY_DROP_ALL) |
| 314 | else: |
| 315 | # FIXME: ideally, we should (re)configure the Receiver |
| 316 | # block, but there is no API for that, and hard-coded |
| 317 | # timeslot configuration is used... |
| 318 | self.ts_filter.set_policy(grgsm.FILTER_POLICY_DEFAULT) |
| 319 | self.ts_filter.set_tn(slot) |
| 320 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 321 | def set_ta(self, ta): |
| 322 | print("[i] Setting TA value %d" % ta) |
| 323 | advance_time_sec = ta * self.GSM_SYM_PERIOD_uS * 1e-6 |
| 324 | self.tx_time_setter.set_timing_advance(advance_time_sec) |
Vadim Yanitskiy | 7da82f4 | 2019-01-19 09:28:23 +0700 | [diff] [blame] | 325 | |
| 326 | def measure(self, freq): |
| 327 | # HACK: generate a random low RSSI value |
| 328 | return random.randint(-120, -100) |