dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008, 2009 Free Software Foundation, Inc. |
| 3 | * |
| 4 | * This software is distributed under the terms of the GNU Affero Public License. |
| 5 | * See the COPYING file in the main directory for details. |
| 6 | * |
| 7 | * This use of this software may be subject to additional restrictions. |
| 8 | * See the LEGAL file in the main directory for details. |
| 9 | |
| 10 | This program is free software: you can redistribute it and/or modify |
| 11 | it under the terms of the GNU Affero General Public License as published by |
| 12 | the Free Software Foundation, either version 3 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU Affero General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU Affero General Public License |
| 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 22 | |
| 23 | */ |
| 24 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 25 | #include "radioInterface.h" |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 26 | #include "Resampler.h" |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 27 | #include <Logger.h> |
| 28 | |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 29 | extern "C" { |
| 30 | #include "convert.h" |
| 31 | } |
| 32 | |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 33 | #define INCHUNK (625 * SAMPSPERSYM) |
| 34 | #define OUTCHUNK (625 * SAMPSPERSYM) |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 35 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 36 | RadioInterface::RadioInterface(RadioDevice *wRadio, |
kurtis.heimerl | 5435404 | 2011-11-26 03:18:49 +0000 | [diff] [blame] | 37 | int wReceiveOffset, |
Thomas Tsou | 312e387 | 2013-04-08 13:45:55 -0400 | [diff] [blame] | 38 | int wSPS, |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 39 | GSM::Time wStartTime) |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 40 | : underrun(false), sendCursor(0), recvCursor(0), mOn(false), |
kurtis.heimerl | 5435404 | 2011-11-26 03:18:49 +0000 | [diff] [blame] | 41 | mRadio(wRadio), receiveOffset(wReceiveOffset), |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 42 | mSPSTx(wSPS), mSPSRx(1), powerScaling(1.0), |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 43 | loadTest(false), sendBuffer(NULL), recvBuffer(NULL), |
| 44 | convertRecvBuffer(NULL), convertSendBuffer(NULL) |
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 | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 54 | bool RadioInterface::init() |
| 55 | { |
| 56 | close(); |
| 57 | |
| 58 | sendBuffer = new signalVector(OUTCHUNK * 20); |
| 59 | recvBuffer = new signalVector(INCHUNK * 20); |
| 60 | |
| 61 | convertSendBuffer = new short[OUTCHUNK * 2 * 20]; |
| 62 | convertRecvBuffer = new short[OUTCHUNK * 2 * 2]; |
| 63 | |
| 64 | sendCursor = 0; |
| 65 | recvCursor = 0; |
| 66 | |
| 67 | return true; |
| 68 | } |
| 69 | |
| 70 | void RadioInterface::close() |
| 71 | { |
| 72 | delete sendBuffer; |
| 73 | delete recvBuffer; |
| 74 | delete convertSendBuffer; |
| 75 | delete convertRecvBuffer; |
| 76 | |
| 77 | sendBuffer = NULL; |
| 78 | recvBuffer = NULL; |
| 79 | convertRecvBuffer = NULL; |
| 80 | convertSendBuffer = NULL; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 81 | } |
| 82 | |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 83 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 84 | double RadioInterface::fullScaleInputValue(void) { |
| 85 | return mRadio->fullScaleInputValue(); |
| 86 | } |
| 87 | |
| 88 | double RadioInterface::fullScaleOutputValue(void) { |
| 89 | return mRadio->fullScaleOutputValue(); |
| 90 | } |
| 91 | |
| 92 | |
kurtis.heimerl | 58d6a01 | 2011-11-26 03:17:38 +0000 | [diff] [blame] | 93 | void RadioInterface::setPowerAttenuation(double atten) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 94 | { |
kurtis.heimerl | 16c6540 | 2011-11-26 03:18:11 +0000 | [diff] [blame] | 95 | double rfGain, digAtten; |
kurtis.heimerl | ee5347a | 2011-11-26 03:18:05 +0000 | [diff] [blame] | 96 | |
kurtis.heimerl | 16c6540 | 2011-11-26 03:18:11 +0000 | [diff] [blame] | 97 | rfGain = mRadio->setTxGain(mRadio->maxTxGain() - atten); |
| 98 | digAtten = atten - mRadio->maxTxGain() + rfGain; |
kurtis.heimerl | ee5347a | 2011-11-26 03:18:05 +0000 | [diff] [blame] | 99 | |
| 100 | if (digAtten < 1.0) |
| 101 | powerScaling = 1.0; |
| 102 | else |
| 103 | powerScaling = 1.0/sqrt(pow(10, (digAtten/10.0))); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 104 | } |
| 105 | |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 106 | int RadioInterface::radioifyVector(signalVector &wVector, |
| 107 | float *retVector, |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 108 | bool zero) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 109 | { |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 110 | if (zero) { |
| 111 | memset(retVector, 0, wVector.size() * 2 * sizeof(float)); |
| 112 | return wVector.size(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 113 | } |
| 114 | |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 115 | memcpy(retVector, wVector.begin(), wVector.size() * 2 * sizeof(float)); |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 116 | |
| 117 | return wVector.size(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 118 | } |
| 119 | |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 120 | int RadioInterface::unRadioifyVector(float *floatVector, |
| 121 | signalVector& newVector) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 122 | { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 123 | signalVector::iterator itr = newVector.begin(); |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 124 | |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 125 | if (newVector.size() > recvCursor) { |
| 126 | LOG(ALERT) << "Insufficient number of samples in receive buffer"; |
| 127 | return -1; |
| 128 | } |
| 129 | |
| 130 | for (int i = 0; i < newVector.size(); i++) { |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 131 | *itr++ = Complex<float>(floatVector[2 * i + 0], |
| 132 | floatVector[2 * i + 1]); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 133 | } |
| 134 | |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 135 | return newVector.size(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 136 | } |
| 137 | |
| 138 | bool RadioInterface::tuneTx(double freq) |
| 139 | { |
| 140 | return mRadio->setTxFreq(freq); |
| 141 | } |
| 142 | |
| 143 | bool RadioInterface::tuneRx(double freq) |
| 144 | { |
| 145 | return mRadio->setRxFreq(freq); |
| 146 | } |
| 147 | |
| 148 | |
| 149 | void RadioInterface::start() |
| 150 | { |
| 151 | LOG(INFO) << "starting radio interface..."; |
Thomas Tsou | f2293b8 | 2013-04-08 13:35:36 -0400 | [diff] [blame] | 152 | #ifdef USRP1 |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 153 | mAlignRadioServiceLoopThread.start((void * (*)(void*))AlignRadioServiceLoopAdapter, |
| 154 | (void*)this); |
Thomas Tsou | f2293b8 | 2013-04-08 13:35:36 -0400 | [diff] [blame] | 155 | #endif |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 156 | writeTimestamp = mRadio->initialWriteTimestamp(); |
| 157 | readTimestamp = mRadio->initialReadTimestamp(); |
| 158 | mRadio->start(); |
| 159 | LOG(DEBUG) << "Radio started"; |
| 160 | mRadio->updateAlignment(writeTimestamp-10000); |
| 161 | mRadio->updateAlignment(writeTimestamp-10000); |
| 162 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 163 | mOn = true; |
| 164 | |
| 165 | } |
| 166 | |
Thomas Tsou | f2293b8 | 2013-04-08 13:35:36 -0400 | [diff] [blame] | 167 | #ifdef USRP1 |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 168 | void *AlignRadioServiceLoopAdapter(RadioInterface *radioInterface) |
| 169 | { |
| 170 | while (1) { |
| 171 | radioInterface->alignRadio(); |
| 172 | pthread_testcancel(); |
| 173 | } |
| 174 | return NULL; |
| 175 | } |
| 176 | |
| 177 | void RadioInterface::alignRadio() { |
| 178 | sleep(60); |
| 179 | mRadio->updateAlignment(writeTimestamp+ (TIMESTAMP) 10000); |
| 180 | } |
Thomas Tsou | f2293b8 | 2013-04-08 13:35:36 -0400 | [diff] [blame] | 181 | #endif |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 182 | |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 183 | void RadioInterface::driveTransmitRadio(signalVector &radioBurst, bool zeroBurst) |
| 184 | { |
| 185 | if (!mOn) |
| 186 | return; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 187 | |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 188 | radioifyVector(radioBurst, |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 189 | (float *) (sendBuffer->begin() + sendCursor), zeroBurst); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 190 | |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 191 | sendCursor += radioBurst.size(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 192 | |
| 193 | pushBuffer(); |
| 194 | } |
| 195 | |
| 196 | void RadioInterface::driveReceiveRadio() { |
| 197 | |
| 198 | if (!mOn) return; |
| 199 | |
| 200 | if (mReceiveFIFO.size() > 8) return; |
| 201 | |
| 202 | pullBuffer(); |
| 203 | |
| 204 | GSM::Time rcvClock = mClock.get(); |
| 205 | rcvClock.decTN(receiveOffset); |
| 206 | unsigned tN = rcvClock.TN(); |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 207 | int rcvSz = recvCursor; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 208 | int readSz = 0; |
| 209 | const int symbolsPerSlot = gSlotLen + 8; |
| 210 | |
| 211 | // while there's enough data in receive buffer, form received |
| 212 | // GSM bursts and pass up to Transceiver |
| 213 | // Using the 157-156-156-156 symbols per timeslot format. |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 214 | while (rcvSz > (symbolsPerSlot + (tN % 4 == 0)) * mSPSRx) { |
| 215 | signalVector rxVector((symbolsPerSlot + (tN % 4 == 0)) * mSPSRx); |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 216 | unRadioifyVector((float *) (recvBuffer->begin() + readSz), rxVector); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 217 | GSM::Time tmpTime = rcvClock; |
| 218 | if (rcvClock.FN() >= 0) { |
| 219 | //LOG(DEBUG) << "FN: " << rcvClock.FN(); |
| 220 | radioVector *rxBurst = NULL; |
| 221 | if (!loadTest) |
| 222 | rxBurst = new radioVector(rxVector,tmpTime); |
| 223 | else { |
| 224 | if (tN % 4 == 0) |
| 225 | rxBurst = new radioVector(*finalVec9,tmpTime); |
| 226 | else |
| 227 | rxBurst = new radioVector(*finalVec,tmpTime); |
| 228 | } |
| 229 | mReceiveFIFO.put(rxBurst); |
| 230 | } |
| 231 | mClock.incTN(); |
| 232 | rcvClock.incTN(); |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 233 | readSz += (symbolsPerSlot+(tN % 4 == 0)) * mSPSRx; |
| 234 | rcvSz -= (symbolsPerSlot+(tN % 4 == 0)) * mSPSRx; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 235 | |
| 236 | tN = rcvClock.TN(); |
| 237 | } |
| 238 | |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 239 | if (readSz > 0) { |
Thomas Tsou | 03e6ecf | 2013-08-20 20:54:54 -0400 | [diff] [blame] | 240 | memmove(recvBuffer->begin(), |
| 241 | recvBuffer->begin() + readSz, |
| 242 | (recvCursor - readSz) * 2 * sizeof(float)); |
| 243 | |
| 244 | recvCursor -= readSz; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 245 | } |
kurtis.heimerl | e724d6d | 2011-11-26 03:18:46 +0000 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | bool RadioInterface::isUnderrun() |
| 249 | { |
| 250 | bool retVal = underrun; |
| 251 | underrun = false; |
| 252 | |
| 253 | return retVal; |
| 254 | } |
| 255 | |
kurtis.heimerl | e724d6d | 2011-11-26 03:18:46 +0000 | [diff] [blame] | 256 | double RadioInterface::setRxGain(double dB) |
| 257 | { |
| 258 | if (mRadio) |
| 259 | return mRadio->setRxGain(dB); |
| 260 | else |
| 261 | return -1; |
| 262 | } |
| 263 | |
| 264 | double RadioInterface::getRxGain() |
| 265 | { |
| 266 | if (mRadio) |
| 267 | return mRadio->getRxGain(); |
| 268 | else |
| 269 | return -1; |
| 270 | } |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 271 | |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 272 | /* Receive a timestamped chunk from the device */ |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 273 | void RadioInterface::pullBuffer() |
| 274 | { |
| 275 | bool local_underrun; |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 276 | int num_recv, len = OUTCHUNK / mSPSTx; |
| 277 | float *output; |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 278 | |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 279 | /* Outer buffer access size is fixed */ |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 280 | num_recv = mRadio->readSamples(convertRecvBuffer, |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 281 | len, |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 282 | &overrun, |
| 283 | readTimestamp, |
| 284 | &local_underrun); |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 285 | if (num_recv != len) { |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 286 | LOG(ALERT) << "Receive error " << num_recv; |
| 287 | return; |
| 288 | } |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 289 | |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 290 | output = (float *) (recvBuffer->begin() + recvCursor); |
| 291 | |
| 292 | convert_short_float(output, convertRecvBuffer, 2 * len); |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 293 | |
| 294 | underrun |= local_underrun; |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 295 | |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 296 | readTimestamp += num_recv; |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 297 | recvCursor += num_recv; |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 298 | } |
| 299 | |
Thomas Tsou | c1f7c42 | 2013-10-11 13:49:55 -0400 | [diff] [blame] | 300 | /* Send timestamped chunk to the device with arbitrary size */ |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 301 | void RadioInterface::pushBuffer() |
| 302 | { |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 303 | int num_sent; |
| 304 | |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 305 | if (sendCursor < INCHUNK) |
| 306 | return; |
| 307 | |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 308 | convert_float_short(convertSendBuffer, |
| 309 | (float *) sendBuffer->begin(), |
| 310 | powerScaling, 2 * sendCursor); |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 311 | |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 312 | /* Send the all samples in the send buffer */ |
| 313 | num_sent = mRadio->writeSamples(convertSendBuffer, |
| 314 | sendCursor, |
| 315 | &underrun, |
| 316 | writeTimestamp); |
| 317 | if (num_sent != sendCursor) { |
| 318 | LOG(ALERT) << "Transmit error " << num_sent; |
| 319 | } |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 320 | |
Thomas Tsou | 9471d76 | 2013-08-20 21:24:24 -0400 | [diff] [blame] | 321 | writeTimestamp += num_sent; |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame] | 322 | sendCursor = 0; |
| 323 | } |