dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1 | /* |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 2 | * Radio device interface |
| 3 | * |
| 4 | * Copyright (C) 2008-2014 Free Software Foundation, Inc. |
| 5 | * Copyright (C) 2015 Ettus Research LLC |
| 6 | * |
Pau Espin Pedrol | 21d03d3 | 2019-07-22 12:05:52 +0200 | [diff] [blame] | 7 | * SPDX-License-Identifier: AGPL-3.0+ |
| 8 | * |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 9 | * This program is free software: you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU Affero General Public License as published by |
| 11 | * the Free Software Foundation, either version 3 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU Affero General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Affero General Public License |
| 20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 21 | * See the COPYING file in the main directory for details. |
| 22 | */ |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 23 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 24 | #include "radioInterface.h" |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 25 | #include "Resampler.h" |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 26 | #include <Logger.h> |
Pau Espin Pedrol | e503c98 | 2019-09-13 18:56:08 +0200 | [diff] [blame] | 27 | #include <Threads.h> |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 28 | |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 29 | extern "C" { |
Pau Espin Pedrol | 553a250 | 2020-07-29 18:05:25 +0200 | [diff] [blame] | 30 | #include <osmocom/core/utils.h> |
| 31 | #include <osmocom/vty/cpu_sched_vty.h> |
| 32 | |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 33 | #include "convert.h" |
| 34 | } |
| 35 | |
Thomas Tsou | 3952d80 | 2013-10-15 15:12:24 -0400 | [diff] [blame] | 36 | #define CHUNK 625 |
| 37 | #define NUMCHUNKS 4 |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 38 | |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 39 | RadioInterface::RadioInterface(RadioDevice *wDevice, size_t tx_sps, |
Tom Tsou | d6ae864 | 2017-03-30 17:22:58 -0700 | [diff] [blame] | 40 | size_t rx_sps, size_t chans, |
Thomas Tsou | e90a42b | 2013-11-13 23:38:09 -0500 | [diff] [blame] | 41 | int wReceiveOffset, GSM::Time wStartTime) |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 42 | : mDevice(wDevice), mSPSTx(tx_sps), mSPSRx(rx_sps), mChans(chans), |
Harald Welte | 2896cec | 2019-07-21 11:55:22 +0200 | [diff] [blame] | 43 | underrun(false), overrun(false), writeTimestamp(0), readTimestamp(0), |
| 44 | receiveOffset(wReceiveOffset), mOn(false) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 45 | { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 46 | mClock.set(wStartTime); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 47 | } |
| 48 | |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 49 | RadioInterface::~RadioInterface(void) |
| 50 | { |
| 51 | close(); |
| 52 | } |
kurtis.heimerl | 5435404 | 2011-11-26 03:18:49 +0000 | [diff] [blame] | 53 | |
Thomas Tsou | fe269fe | 2013-10-14 23:56:51 -0400 | [diff] [blame] | 54 | bool RadioInterface::init(int type) |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 55 | { |
Tom Tsou | d6ae864 | 2017-03-30 17:22:58 -0700 | [diff] [blame] | 56 | if ((type != RadioDevice::NORMAL) || !mChans) { |
Thomas Tsou | e90a42b | 2013-11-13 23:38:09 -0500 | [diff] [blame] | 57 | LOG(ALERT) << "Invalid configuration"; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 58 | return false; |
| 59 | } |
| 60 | |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 61 | close(); |
| 62 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 63 | sendBuffer.resize(mChans); |
| 64 | recvBuffer.resize(mChans); |
| 65 | convertSendBuffer.resize(mChans); |
| 66 | convertRecvBuffer.resize(mChans); |
| 67 | mReceiveFIFO.resize(mChans); |
Thomas Tsou | cb269a3 | 2013-11-15 14:15:47 -0500 | [diff] [blame] | 68 | powerScaling.resize(mChans); |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 69 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 70 | for (size_t i = 0; i < mChans; i++) { |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 71 | sendBuffer[i] = new RadioBuffer(NUMCHUNKS, CHUNK * mSPSTx, 0, true); |
| 72 | recvBuffer[i] = new RadioBuffer(NUMCHUNKS, CHUNK * mSPSRx, 0, false); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 73 | |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 74 | convertSendBuffer[i] = new short[CHUNK * mSPSTx * 2]; |
| 75 | convertRecvBuffer[i] = new short[CHUNK * mSPSRx * 2]; |
Alexander Chemeris | 19174f5 | 2016-06-18 11:16:54 +0300 | [diff] [blame] | 76 | |
| 77 | powerScaling[i] = 1.0; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 78 | } |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 79 | |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 80 | return true; |
| 81 | } |
| 82 | |
| 83 | void RadioInterface::close() |
| 84 | { |
Pau Espin Pedrol | 39e0bba | 2018-12-03 12:19:51 +0100 | [diff] [blame] | 85 | for (std::vector<RadioBuffer*>::iterator it = sendBuffer.begin(); it != sendBuffer.end(); ++it) |
| 86 | delete *it; |
| 87 | for (std::vector<RadioBuffer*>::iterator it = recvBuffer.begin(); it != recvBuffer.end(); ++it) |
| 88 | delete *it; |
| 89 | for (std::vector<short*>::iterator it = convertSendBuffer.begin(); it != convertSendBuffer.end(); ++it) |
| 90 | delete[] *it; |
| 91 | for (std::vector<short*>::iterator it = convertRecvBuffer.begin(); it != convertRecvBuffer.end(); ++it) |
| 92 | delete[] *it; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 93 | sendBuffer.resize(0); |
| 94 | recvBuffer.resize(0); |
| 95 | convertSendBuffer.resize(0); |
| 96 | convertRecvBuffer.resize(0); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | double RadioInterface::fullScaleInputValue(void) { |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 100 | return mDevice->fullScaleInputValue(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | double RadioInterface::fullScaleOutputValue(void) { |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 104 | return mDevice->fullScaleOutputValue(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 105 | } |
| 106 | |
Tom Tsou | a4d1a41 | 2014-11-25 15:46:56 -0800 | [diff] [blame] | 107 | int RadioInterface::setPowerAttenuation(int atten, size_t chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 108 | { |
Pau Espin Pedrol | 992c9bd | 2020-06-08 13:44:24 +0200 | [diff] [blame] | 109 | double rfAtten, digAtten; |
kurtis.heimerl | ee5347a | 2011-11-26 03:18:05 +0000 | [diff] [blame] | 110 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 111 | if (chan >= mChans) { |
| 112 | LOG(ALERT) << "Invalid channel requested"; |
Tom Tsou | a4d1a41 | 2014-11-25 15:46:56 -0800 | [diff] [blame] | 113 | return -1; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 114 | } |
| 115 | |
Tom Tsou | a4d1a41 | 2014-11-25 15:46:56 -0800 | [diff] [blame] | 116 | if (atten < 0.0) |
| 117 | atten = 0.0; |
| 118 | |
Pau Espin Pedrol | 992c9bd | 2020-06-08 13:44:24 +0200 | [diff] [blame] | 119 | rfAtten = mDevice->setPowerAttenuation((double) atten, chan); |
| 120 | digAtten = (double) atten - rfAtten; |
kurtis.heimerl | ee5347a | 2011-11-26 03:18:05 +0000 | [diff] [blame] | 121 | |
| 122 | if (digAtten < 1.0) |
Thomas Tsou | cb269a3 | 2013-11-15 14:15:47 -0500 | [diff] [blame] | 123 | powerScaling[chan] = 1.0; |
kurtis.heimerl | ee5347a | 2011-11-26 03:18:05 +0000 | [diff] [blame] | 124 | else |
Thomas Tsou | cb269a3 | 2013-11-15 14:15:47 -0500 | [diff] [blame] | 125 | powerScaling[chan] = 1.0 / sqrt(pow(10, digAtten / 10.0)); |
Tom Tsou | a4d1a41 | 2014-11-25 15:46:56 -0800 | [diff] [blame] | 126 | |
| 127 | return atten; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 128 | } |
| 129 | |
Pau Espin Pedrol | 0e09e7c | 2020-05-29 16:39:07 +0200 | [diff] [blame] | 130 | int RadioInterface::getNominalTxPower(size_t chan) |
| 131 | { |
| 132 | if (chan >= mChans) { |
| 133 | LOG(ALERT) << "Invalid channel requested"; |
| 134 | return -1; |
| 135 | } |
| 136 | |
| 137 | return mDevice->getNominalTxPower(chan); |
| 138 | } |
| 139 | |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 140 | int RadioInterface::radioifyVector(signalVector &wVector, |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 141 | size_t chan, bool zero) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 142 | { |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 143 | if (zero) |
| 144 | sendBuffer[chan]->zero(wVector.size()); |
| 145 | else |
| 146 | sendBuffer[chan]->write((float *) wVector.begin(), wVector.size()); |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 147 | |
| 148 | return wVector.size(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 149 | } |
| 150 | |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 151 | int RadioInterface::unRadioifyVector(signalVector *newVector, size_t chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 152 | { |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 153 | if (newVector->size() > recvBuffer[chan]->getAvailSamples()) { |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 154 | LOG(ALERT) << "Insufficient number of samples in receive buffer"; |
| 155 | return -1; |
| 156 | } |
| 157 | |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 158 | recvBuffer[chan]->read((float *) newVector->begin(), newVector->size()); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 159 | |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 160 | return newVector->size(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 161 | } |
| 162 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 163 | bool RadioInterface::tuneTx(double freq, size_t chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 164 | { |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 165 | return mDevice->setTxFreq(freq, chan); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 166 | } |
| 167 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 168 | bool RadioInterface::tuneRx(double freq, size_t chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 169 | { |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 170 | return mDevice->setRxFreq(freq, chan); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 171 | } |
| 172 | |
Pau Espin Pedrol | 0fc20d1 | 2018-04-24 17:48:52 +0200 | [diff] [blame] | 173 | /** synchronization thread loop */ |
| 174 | void *AlignRadioServiceLoopAdapter(RadioInterface *radioInterface) |
| 175 | { |
Pau Espin Pedrol | 5b60c98 | 2018-09-20 18:04:46 +0200 | [diff] [blame] | 176 | set_selfthread_name("AlignRadio"); |
Pau Espin Pedrol | 553a250 | 2020-07-29 18:05:25 +0200 | [diff] [blame] | 177 | OSMO_ASSERT(osmo_cpu_sched_vty_apply_localthread() == 0); |
Pau Espin Pedrol | 0fc20d1 | 2018-04-24 17:48:52 +0200 | [diff] [blame] | 178 | while (1) { |
| 179 | sleep(60); |
| 180 | radioInterface->alignRadio(); |
| 181 | pthread_testcancel(); |
| 182 | } |
| 183 | return NULL; |
| 184 | } |
| 185 | |
| 186 | void RadioInterface::alignRadio() { |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 187 | mDevice->updateAlignment(writeTimestamp+ (TIMESTAMP) 10000); |
Pau Espin Pedrol | 0fc20d1 | 2018-04-24 17:48:52 +0200 | [diff] [blame] | 188 | } |
| 189 | |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 190 | bool RadioInterface::start() |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 191 | { |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 192 | if (mOn) |
| 193 | return true; |
| 194 | |
| 195 | LOG(INFO) << "Starting radio device"; |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 196 | if (mDevice->requiresRadioAlign()) |
Pau Espin Pedrol | 0fc20d1 | 2018-04-24 17:48:52 +0200 | [diff] [blame] | 197 | mAlignRadioServiceLoopThread.start( |
| 198 | (void * (*)(void*))AlignRadioServiceLoopAdapter, |
| 199 | (void*)this); |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 200 | |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 201 | if (!mDevice->start()) |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 202 | return false; |
| 203 | |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 204 | for (size_t i = 0; i < mChans; i++) { |
| 205 | sendBuffer[i]->reset(); |
| 206 | recvBuffer[i]->reset(); |
| 207 | } |
Tom Tsou | d7610cf | 2015-05-07 17:39:49 -0700 | [diff] [blame] | 208 | |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 209 | writeTimestamp = mDevice->initialWriteTimestamp(); |
| 210 | readTimestamp = mDevice->initialReadTimestamp(); |
Thomas Tsou | 18d3b83 | 2014-02-13 14:55:23 -0500 | [diff] [blame] | 211 | |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 212 | mDevice->updateAlignment(writeTimestamp-10000); |
| 213 | mDevice->updateAlignment(writeTimestamp-10000); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 214 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 215 | mOn = true; |
Thomas Tsou | 18d3b83 | 2014-02-13 14:55:23 -0500 | [diff] [blame] | 216 | LOG(INFO) << "Radio started"; |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 217 | return true; |
| 218 | } |
| 219 | |
| 220 | /* |
| 221 | * Stop the radio device |
| 222 | * |
| 223 | * This is a pass-through call to the device interface. Because the underlying |
| 224 | * stop command issuance generally doesn't return confirmation on device status, |
| 225 | * this call will only return false if the device is already stopped. |
| 226 | */ |
| 227 | bool RadioInterface::stop() |
| 228 | { |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 229 | if (!mOn || !mDevice->stop()) |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 230 | return false; |
| 231 | |
| 232 | mOn = false; |
| 233 | return true; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 234 | } |
| 235 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 236 | void RadioInterface::driveTransmitRadio(std::vector<signalVector *> &bursts, |
| 237 | std::vector<bool> &zeros) |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 238 | { |
| 239 | if (!mOn) |
| 240 | return; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 241 | |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 242 | for (size_t i = 0; i < mChans; i++) |
| 243 | radioifyVector(*bursts[i], i, zeros[i]); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 244 | |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 245 | while (pushBuffer()); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 246 | } |
| 247 | |
Pau Espin Pedrol | 8e498bf | 2018-09-03 16:45:15 +0200 | [diff] [blame] | 248 | int RadioInterface::driveReceiveRadio() |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 249 | { |
| 250 | radioVector *burst = NULL; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 251 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 252 | if (!mOn) |
Pau Espin Pedrol | 8e498bf | 2018-09-03 16:45:15 +0200 | [diff] [blame] | 253 | return 0; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 254 | |
Pau Espin Pedrol | 8e498bf | 2018-09-03 16:45:15 +0200 | [diff] [blame] | 255 | if (pullBuffer() < 0) |
| 256 | return -1; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 257 | |
| 258 | GSM::Time rcvClock = mClock.get(); |
| 259 | rcvClock.decTN(receiveOffset); |
| 260 | unsigned tN = rcvClock.TN(); |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 261 | int recvSz = recvBuffer[0]->getAvailSamples(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 262 | const int symbolsPerSlot = gSlotLen + 8; |
Tom Tsou | 5cd70dc | 2016-03-06 01:28:40 -0800 | [diff] [blame] | 263 | int burstSize; |
| 264 | |
| 265 | if (mSPSRx == 4) |
| 266 | burstSize = 625; |
| 267 | else |
| 268 | burstSize = symbolsPerSlot + (tN % 4 == 0); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 269 | |
Pau Espin Pedrol | 4644463 | 2018-09-03 16:42:04 +0200 | [diff] [blame] | 270 | /* |
Thomas Tsou | d0f3ca3 | 2013-11-09 22:05:23 -0500 | [diff] [blame] | 271 | * Pre-allocate head room for the largest correlation size |
| 272 | * so we can later avoid a re-allocation and copy |
| 273 | * */ |
Vadim Yanitskiy | a79bc70 | 2018-10-17 11:01:58 +0200 | [diff] [blame] | 274 | size_t head = GSM::gRACHSynchSequenceTS0.size(); |
Thomas Tsou | d0f3ca3 | 2013-11-09 22:05:23 -0500 | [diff] [blame] | 275 | |
| 276 | /* |
| 277 | * Form receive bursts and pass up to transceiver. Use repeating |
| 278 | * pattern of 157-156-156-156 symbols per timeslot |
| 279 | */ |
Thomas Tsou | e0fa2bf | 2013-11-09 02:46:29 -0500 | [diff] [blame] | 280 | while (recvSz > burstSize) { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 281 | for (size_t i = 0; i < mChans; i++) { |
Tom Tsou | d6ae864 | 2017-03-30 17:22:58 -0700 | [diff] [blame] | 282 | burst = new radioVector(rcvClock, burstSize, head); |
| 283 | unRadioifyVector(burst->getVector(), i); |
Thomas Tsou | e90a42b | 2013-11-13 23:38:09 -0500 | [diff] [blame] | 284 | |
Thomas Tsou | e0fa2bf | 2013-11-09 02:46:29 -0500 | [diff] [blame] | 285 | if (mReceiveFIFO[i].size() < 32) |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 286 | mReceiveFIFO[i].write(burst); |
Thomas Tsou | e0fa2bf | 2013-11-09 02:46:29 -0500 | [diff] [blame] | 287 | else |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 288 | delete burst; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 289 | } |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 290 | |
| 291 | mClock.incTN(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 292 | rcvClock.incTN(); |
Thomas Tsou | e0fa2bf | 2013-11-09 02:46:29 -0500 | [diff] [blame] | 293 | recvSz -= burstSize; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 294 | |
| 295 | tN = rcvClock.TN(); |
Thomas Tsou | e0fa2bf | 2013-11-09 02:46:29 -0500 | [diff] [blame] | 296 | |
Tom Tsou | 5cd70dc | 2016-03-06 01:28:40 -0800 | [diff] [blame] | 297 | if (mSPSRx != 4) |
| 298 | burstSize = (symbolsPerSlot + (tN % 4 == 0)) * mSPSRx; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 299 | } |
| 300 | |
Pau Espin Pedrol | 8e498bf | 2018-09-03 16:45:15 +0200 | [diff] [blame] | 301 | return 1; |
kurtis.heimerl | e724d6d | 2011-11-26 03:18:46 +0000 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | bool RadioInterface::isUnderrun() |
| 305 | { |
Pau Espin Pedrol | e503c98 | 2019-09-13 18:56:08 +0200 | [diff] [blame] | 306 | bool retVal; |
| 307 | /* atomically get previous value of "underrun" and set the var to false */ |
| 308 | retVal = osmo_trx_sync_fetch_and_and(&underrun, false); |
kurtis.heimerl | e724d6d | 2011-11-26 03:18:46 +0000 | [diff] [blame] | 309 | return retVal; |
| 310 | } |
| 311 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 312 | VectorFIFO* RadioInterface::receiveFIFO(size_t chan) |
| 313 | { |
| 314 | if (chan >= mReceiveFIFO.size()) |
| 315 | return NULL; |
| 316 | |
| 317 | return &mReceiveFIFO[chan]; |
| 318 | } |
| 319 | |
| 320 | double RadioInterface::setRxGain(double dB, size_t chan) |
kurtis.heimerl | e724d6d | 2011-11-26 03:18:46 +0000 | [diff] [blame] | 321 | { |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 322 | return mDevice->setRxGain(dB, chan); |
kurtis.heimerl | e724d6d | 2011-11-26 03:18:46 +0000 | [diff] [blame] | 323 | } |
| 324 | |
Pau Espin Pedrol | e91544d | 2020-10-13 17:03:37 +0200 | [diff] [blame] | 325 | double RadioInterface::rssiOffset(size_t chan) |
| 326 | { |
| 327 | return mDevice->rssiOffset(chan); |
| 328 | } |
| 329 | |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 330 | /* Receive a timestamped chunk from the device */ |
Pau Espin Pedrol | 8e498bf | 2018-09-03 16:45:15 +0200 | [diff] [blame] | 331 | int RadioInterface::pullBuffer() |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 332 | { |
| 333 | bool local_underrun; |
Pau Espin Pedrol | 9700969 | 2018-09-03 17:01:59 +0200 | [diff] [blame] | 334 | int numRecv; |
| 335 | size_t segmentLen = recvBuffer[0]->getSegmentLen(); |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 336 | |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 337 | if (recvBuffer[0]->getFreeSegments() <= 0) |
Pau Espin Pedrol | 8e498bf | 2018-09-03 16:45:15 +0200 | [diff] [blame] | 338 | return -1; |
Thomas Tsou | 3952d80 | 2013-10-15 15:12:24 -0400 | [diff] [blame] | 339 | |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 340 | /* Outer buffer access size is fixed */ |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 341 | numRecv = mDevice->readSamples(convertRecvBuffer, |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 342 | segmentLen, |
| 343 | &overrun, |
| 344 | readTimestamp, |
| 345 | &local_underrun); |
| 346 | |
Pau Espin Pedrol | 9700969 | 2018-09-03 17:01:59 +0200 | [diff] [blame] | 347 | if ((size_t) numRecv != segmentLen) { |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 348 | LOG(ALERT) << "Receive error " << numRecv; |
Pau Espin Pedrol | 8e498bf | 2018-09-03 16:45:15 +0200 | [diff] [blame] | 349 | return -1; |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 350 | } |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 351 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 352 | for (size_t i = 0; i < mChans; i++) { |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 353 | convert_short_float(recvBuffer[i]->getWriteSegment(), |
| 354 | convertRecvBuffer[i], |
| 355 | segmentLen * 2); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 356 | } |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 357 | |
Pau Espin Pedrol | e503c98 | 2019-09-13 18:56:08 +0200 | [diff] [blame] | 358 | osmo_trx_sync_or_and_fetch(&underrun, local_underrun); |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 359 | readTimestamp += numRecv; |
Pau Espin Pedrol | 8e498bf | 2018-09-03 16:45:15 +0200 | [diff] [blame] | 360 | return 0; |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 361 | } |
| 362 | |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 363 | /* Send timestamped chunk to the device with arbitrary size */ |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 364 | bool RadioInterface::pushBuffer() |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 365 | { |
Pau Espin Pedrol | 2c673e0 | 2019-07-29 20:14:47 +0200 | [diff] [blame] | 366 | bool local_underrun; |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 367 | size_t numSent, segmentLen = sendBuffer[0]->getSegmentLen(); |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 368 | |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 369 | if (sendBuffer[0]->getAvailSegments() < 1) |
| 370 | return false; |
Thomas Tsou | 3952d80 | 2013-10-15 15:12:24 -0400 | [diff] [blame] | 371 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 372 | for (size_t i = 0; i < mChans; i++) { |
| 373 | convert_float_short(convertSendBuffer[i], |
Tom Tsou | b577ef0 | 2016-07-12 16:07:48 -0700 | [diff] [blame] | 374 | (float *) sendBuffer[i]->getReadSegment(), |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 375 | powerScaling[i], |
| 376 | segmentLen * 2); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 377 | } |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 378 | |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 379 | /* Send the all samples in the send buffer */ |
Pau Espin Pedrol | a801ae5 | 2019-09-13 15:59:29 +0200 | [diff] [blame] | 380 | numSent = mDevice->writeSamples(convertSendBuffer, |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 381 | segmentLen, |
Pau Espin Pedrol | 2c673e0 | 2019-07-29 20:14:47 +0200 | [diff] [blame] | 382 | &local_underrun, |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 383 | writeTimestamp); |
Pau Espin Pedrol | e503c98 | 2019-09-13 18:56:08 +0200 | [diff] [blame] | 384 | osmo_trx_sync_or_and_fetch(&underrun, local_underrun); |
Tom Tsou | 28670fb | 2015-08-21 19:32:58 -0700 | [diff] [blame] | 385 | writeTimestamp += numSent; |
| 386 | |
| 387 | return true; |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 388 | } |