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 |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 5 | # Generic (device independent) flow-graph implementation |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 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 |
| 36 | from gnuradio import gr |
| 37 | |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 38 | from gnuradio import filter |
| 39 | from gnuradio.filter import firdes |
| 40 | |
Vasil Velichkov | 46c90be | 2019-09-02 04:06:41 +0300 | [diff] [blame] | 41 | from .dict_toggle_sign import dict_toggle_sign |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 42 | |
Vadim Yanitskiy | f237f1a | 2018-12-20 09:49:56 +0700 | [diff] [blame] | 43 | class RadioInterface(gr.top_block): |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 44 | # PHY specific variables |
Vadim Yanitskiy | 1fe2825 | 2019-01-19 10:16:27 +0700 | [diff] [blame] | 45 | rx_freq = None |
| 46 | tx_freq = None |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 47 | osr = 4 |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 48 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 49 | # GSM timings (in microseconds [uS]) |
| 50 | # One timeslot duration is 576.9 μs = 15/26 ms, |
| 51 | # or 156.25 symbol periods (a symbol period is 48/13 μs) |
| 52 | GSM_SYM_PERIOD_uS = 48.0 / 13.0 |
| 53 | GSM_TS_PERIOD_uS = GSM_SYM_PERIOD_uS * 156.25 |
| 54 | GSM_UL_DL_SHIFT_uS = -(GSM_TS_PERIOD_uS * 3) |
Vadim Yanitskiy | 9dded9b | 2017-12-05 01:00:51 +0700 | [diff] [blame] | 55 | |
Piotr Krysik | b3d5c57 | 2018-09-12 00:35:05 +0700 | [diff] [blame] | 56 | GSM_SYM_RATE = (1.0 / GSM_SYM_PERIOD_uS) * 1e6 |
| 57 | SAMPLE_RATE = GSM_SYM_RATE * osr |
Vadim Yanitskiy | 38baac9 | 2018-09-07 19:09:12 +0700 | [diff] [blame] | 58 | |
Vadim Yanitskiy | 1fe2825 | 2019-01-19 10:16:27 +0700 | [diff] [blame] | 59 | # Dummy freq. value that is used during initialization |
| 60 | # basically, the DL freq. of ARFCN 0 |
| 61 | DUMMY_FREQ = 935e6 |
| 62 | |
Vadim Yanitskiy | b6f6f47 | 2019-01-19 12:14:28 +0700 | [diff] [blame] | 63 | # Human-readable description |
| 64 | def __str__(self): |
| 65 | return "(generic)" |
| 66 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 67 | def __init__(self, phy_args, phy_sample_rate, |
| 68 | phy_rx_gain, phy_tx_gain, phy_ppm, |
| 69 | phy_rx_antenna, phy_tx_antenna, |
Piotr Krysik | b8632ff | 2018-09-13 15:42:55 +0200 | [diff] [blame] | 70 | phy_freq_offset, trx_bind_addr, |
Piotr Krysik | 0631767 | 2018-09-13 14:41:06 +0200 | [diff] [blame] | 71 | trx_remote_addr, trx_base_port): |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 72 | |
Vadim Yanitskiy | b6f6f47 | 2019-01-19 12:14:28 +0700 | [diff] [blame] | 73 | print("[i] Init %s Radio interface (L:%s:%u <-> R:%s:%u)" |
| 74 | % (self, trx_bind_addr, trx_base_port + 2, |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 75 | trx_remote_addr, trx_base_port + 102)) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 76 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 77 | # PHY specific variables |
| 78 | self.sample_rate = phy_sample_rate |
| 79 | self.rx_gain = phy_rx_gain |
| 80 | self.tx_gain = phy_tx_gain |
| 81 | self.ppm = phy_ppm |
Piotr Krysik | b8632ff | 2018-09-13 15:42:55 +0200 | [diff] [blame] | 82 | self.freq_offset = phy_freq_offset |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 83 | |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 84 | self.phy_args = phy_args |
| 85 | self.rx_antenna = phy_rx_antenna |
| 86 | self.tx_antenna = phy_tx_antenna |
| 87 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 88 | gr.top_block.__init__(self, "GR-GSM TRX") |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 89 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 90 | # TRX Burst Interface |
| 91 | self.trx_burst_if = grgsm.trx_burst_if( |
| 92 | trx_bind_addr, trx_remote_addr, |
| 93 | str(trx_base_port)) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 94 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 95 | # RX path definition |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 96 | self.phy_init_source() |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 97 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 98 | self.msg_to_tag_src = grgsm.msg_to_tag() |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 99 | |
Vadim Yanitskiy | 1fe2825 | 2019-01-19 10:16:27 +0700 | [diff] [blame] | 100 | self.rotator_src = grgsm.controlled_rotator_cc(0.0) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 101 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 102 | self.lpf = filter.fir_filter_ccf(1, firdes.low_pass( |
| 103 | 1, phy_sample_rate, 125e3, 5e3, firdes.WIN_HAMMING, 6.76)) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 104 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 105 | self.gsm_receiver = grgsm.receiver(self.osr, ([0]), ([])) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 106 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 107 | self.ts_filter = grgsm.burst_timeslot_filter(0) |
| 108 | self.ts_filter.set_policy(grgsm.FILTER_POLICY_DROP_ALL) |
Vadim Yanitskiy | 962e2d8 | 2017-10-17 09:24:55 +0700 | [diff] [blame] | 109 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 110 | # Connections |
| 111 | self.connect( |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 112 | (self._phy_src, 0), |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 113 | (self.msg_to_tag_src, 0)) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 114 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 115 | self.connect( |
| 116 | (self.msg_to_tag_src, 0), |
| 117 | (self.rotator_src, 0)) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 118 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 119 | self.connect( |
| 120 | (self.rotator_src, 0), |
| 121 | (self.lpf, 0)) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 122 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 123 | self.connect( |
| 124 | (self.lpf, 0), |
| 125 | (self.gsm_receiver, 0)) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 126 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 127 | self.msg_connect( |
| 128 | (self.gsm_receiver, 'C0'), |
| 129 | (self.ts_filter, 'in')) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 130 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 131 | self.msg_connect( |
| 132 | (self.ts_filter, 'out'), |
| 133 | (self.trx_burst_if, 'bursts')) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 134 | |
Vadim Yanitskiy | 962e2d8 | 2017-10-17 09:24:55 +0700 | [diff] [blame] | 135 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 136 | # TX Path Definition |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 137 | self.phy_init_sink() |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 138 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 139 | self.tx_time_setter = grgsm.txtime_setter( |
| 140 | 0xffffffff, 0, 0, 0, 0, 0, |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 141 | self.phy_proc_delay + self.GSM_UL_DL_SHIFT_uS * 1e-6) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 142 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 143 | self.tx_burst_proc = grgsm.preprocess_tx_burst() |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 144 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 145 | self.pdu_to_tagged_stream = blocks.pdu_to_tagged_stream( |
| 146 | blocks.byte_t, 'packet_len') |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 147 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 148 | self.gmsk_mod = grgsm.gsm_gmsk_mod( |
| 149 | BT = 0.3, pulse_duration = 4, sps = self.osr) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 150 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 151 | self.burst_shaper = digital.burst_shaper_cc( |
| 152 | (firdes.window(firdes.WIN_HANN, 16, 0)), |
| 153 | 0, 20, False, "packet_len") |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 154 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 155 | self.msg_to_tag_sink = grgsm.msg_to_tag() |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 156 | |
Vadim Yanitskiy | 1fe2825 | 2019-01-19 10:16:27 +0700 | [diff] [blame] | 157 | self.rotator_sink = grgsm.controlled_rotator_cc(0.0) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 158 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 159 | # Connections |
| 160 | self.msg_connect( |
| 161 | (self.trx_burst_if, 'bursts'), |
| 162 | (self.tx_time_setter, 'bursts_in')) |
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.msg_connect( |
| 165 | (self.tx_time_setter, 'bursts_out'), |
| 166 | (self.tx_burst_proc, 'bursts_in')) |
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_connect( |
| 169 | (self.tx_burst_proc, 'bursts_out'), |
| 170 | (self.pdu_to_tagged_stream, 'pdus')) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 171 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 172 | self.connect( |
| 173 | (self.pdu_to_tagged_stream, 0), |
| 174 | (self.gmsk_mod, 0)) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 175 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 176 | self.connect( |
| 177 | (self.gmsk_mod, 0), |
| 178 | (self.burst_shaper, 0)) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 179 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 180 | self.connect( |
| 181 | (self.burst_shaper, 0), |
| 182 | (self.msg_to_tag_sink, 0)) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 183 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 184 | self.connect( |
| 185 | (self.msg_to_tag_sink, 0), |
| 186 | (self.rotator_sink, 0)) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 187 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 188 | self.connect( |
| 189 | (self.rotator_sink, 0), |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 190 | (self._phy_sink, 0)) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 191 | |
| 192 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 193 | # RX & TX synchronization |
| 194 | self.bt_filter = grgsm.burst_type_filter([3]) |
| 195 | self.burst_to_fn_time = grgsm.burst_to_fn_time() |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 196 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 197 | # Connections |
| 198 | self.msg_connect( |
| 199 | (self.gsm_receiver, 'C0'), |
| 200 | (self.bt_filter, 'bursts_in')) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 201 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 202 | self.msg_connect( |
| 203 | (self.bt_filter, 'bursts_out'), |
| 204 | (self.burst_to_fn_time, 'bursts_in')) |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 205 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 206 | self.msg_connect( |
| 207 | (self.burst_to_fn_time, 'fn_time_out'), |
| 208 | (self.tx_time_setter, 'fn_time')) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 209 | |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 210 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 211 | # AFC (Automatic Frequency Correction) |
Vadim Yanitskiy | 1fe2825 | 2019-01-19 10:16:27 +0700 | [diff] [blame] | 212 | # NOTE: dummy frequency is used during init |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 213 | self.gsm_clck_ctrl = grgsm.clock_offset_control( |
Vadim Yanitskiy | 1fe2825 | 2019-01-19 10:16:27 +0700 | [diff] [blame] | 214 | self.DUMMY_FREQ, phy_sample_rate, osr = self.osr) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 215 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 216 | self.dict_toggle_sign = dict_toggle_sign() |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 217 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 218 | # Connections |
| 219 | self.msg_connect( |
| 220 | (self.gsm_receiver, 'measurements'), |
| 221 | (self.gsm_clck_ctrl, 'measurements')) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 222 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 223 | self.msg_connect( |
| 224 | (self.gsm_clck_ctrl, 'ctrl'), |
| 225 | (self.msg_to_tag_src, 'msg')) |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 226 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 227 | self.msg_connect( |
| 228 | (self.gsm_clck_ctrl, 'ctrl'), |
| 229 | (self.dict_toggle_sign, 'dict_in')) |
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 | self.msg_connect( |
| 232 | (self.dict_toggle_sign, 'dict_out'), |
| 233 | (self.msg_to_tag_sink, 'msg')) |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 234 | |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 235 | def phy_init_source(self): |
| 236 | raise NotImplementedError |
Vadim Yanitskiy | 0017a35 | 2018-03-03 23:37:30 +0700 | [diff] [blame] | 237 | |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 238 | def phy_init_sink(self): |
| 239 | raise NotImplementedError |
Vadim Yanitskiy | 0017a35 | 2018-03-03 23:37:30 +0700 | [diff] [blame] | 240 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 241 | def shutdown(self): |
| 242 | print("[i] Shutdown Radio interface") |
| 243 | self.stop() |
| 244 | self.wait() |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 245 | |
Vadim Yanitskiy | b7a272e | 2019-01-19 10:18:10 +0700 | [diff] [blame] | 246 | @property |
| 247 | def ready(self): |
| 248 | # RX / TX frequencies shall be set |
| 249 | if self.rx_freq is None: |
| 250 | return False |
| 251 | if self.tx_freq is None: |
| 252 | return False |
| 253 | |
| 254 | return True |
| 255 | |
Vadim Yanitskiy | baebe45 | 2019-01-19 10:20:59 +0700 | [diff] [blame] | 256 | def reset(self): |
| 257 | # TODO: do we need to reset both RX / TX freq.? |
| 258 | # self.rx_freq = None |
| 259 | # self.tx_freq = None |
| 260 | self.set_ta(0) |
| 261 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 262 | def calc_phase_inc(self, fc): |
| 263 | return self.ppm / 1.0e6 * 2 * pi * fc / self.sample_rate |
Vadim Yanitskiy | d222ee5 | 2017-12-03 23:49:09 +0700 | [diff] [blame] | 264 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 265 | def set_rx_freq(self, fc): |
Vadim Yanitskiy | 8bd9e15 | 2019-01-19 10:35:55 +0700 | [diff] [blame] | 266 | if self.freq_offset != 0: |
| 267 | fc += self.freq_offset |
| 268 | print("[#] Shifting RX freq. to %s (offset is %s)" |
| 269 | % (eng_notation.num_to_str(fc), |
| 270 | eng_notation.num_to_str(self.freq_offset))) |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 271 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 272 | self.rotator_src.set_phase_inc(self.calc_phase_inc(fc)) |
Vadim Yanitskiy | 5823a41 | 2019-01-19 10:39:51 +0700 | [diff] [blame] | 273 | self.gsm_clck_ctrl.set_fc(fc) |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 274 | self.phy_set_rx_freq(fc) |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 275 | self.rx_freq = fc |
Vadim Yanitskiy | 89aa469 | 2017-11-14 00:15:20 +0700 | [diff] [blame] | 276 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 277 | def set_tx_freq(self, fc): |
Vadim Yanitskiy | 8bd9e15 | 2019-01-19 10:35:55 +0700 | [diff] [blame] | 278 | if self.freq_offset != 0: |
| 279 | fc += self.freq_offset |
| 280 | print("[#] Shifting TX freq. to %s (offset is %s)" |
| 281 | % (eng_notation.num_to_str(fc), |
| 282 | eng_notation.num_to_str(self.freq_offset))) |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 283 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 284 | self.rotator_sink.set_phase_inc(-self.calc_phase_inc(fc)) |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 285 | self.phy_set_tx_freq(fc) |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 286 | self.tx_freq = fc |
Piotr Krysik | 902f4eb | 2017-09-19 08:04:33 +0200 | [diff] [blame] | 287 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 288 | def set_rx_gain(self, gain): |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 289 | self.phy_set_rx_gain(gain) |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 290 | self.rx_gain = gain |
Vadim Yanitskiy | 01c6afd | 2017-10-19 01:14:24 +0700 | [diff] [blame] | 291 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 292 | def set_tx_gain(self, gain): |
Vadim Yanitskiy | 3120ba7 | 2019-01-19 11:55:01 +0700 | [diff] [blame] | 293 | self.phy_set_tx_gain(gain) |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 294 | self.tx_gain = gain |
Vadim Yanitskiy | 34266e7 | 2017-12-05 01:01:43 +0700 | [diff] [blame] | 295 | |
Vadim Yanitskiy | 180a037 | 2019-01-19 10:22:59 +0700 | [diff] [blame] | 296 | def set_slot(self, slot, config): |
| 297 | print("[i] Configure timeslot filter to: %s" |
| 298 | % ("drop all" if config == 0 else "tn=%d" % slot)) |
| 299 | |
| 300 | if config == 0: |
| 301 | # Value 0 is used for deactivation |
| 302 | self.ts_filter.set_policy(grgsm.FILTER_POLICY_DROP_ALL) |
| 303 | else: |
| 304 | # FIXME: ideally, we should (re)configure the Receiver |
| 305 | # block, but there is no API for that, and hard-coded |
| 306 | # timeslot configuration is used... |
| 307 | self.ts_filter.set_policy(grgsm.FILTER_POLICY_DEFAULT) |
| 308 | self.ts_filter.set_tn(slot) |
| 309 | |
Piotr Krysik | 1cc264f | 2018-09-06 19:57:57 +0200 | [diff] [blame] | 310 | def set_ta(self, ta): |
| 311 | print("[i] Setting TA value %d" % ta) |
| 312 | advance_time_sec = ta * self.GSM_SYM_PERIOD_uS * 1e-6 |
| 313 | self.tx_time_setter.set_timing_advance(advance_time_sec) |
Vadim Yanitskiy | 7da82f4 | 2019-01-19 09:28:23 +0700 | [diff] [blame] | 314 | |
| 315 | def measure(self, freq): |
| 316 | # HACK: generate a random low RSSI value |
| 317 | return random.randint(-120, -100) |