dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1 | /* |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 2 | * Copyright 2008, 2009, 2012 Free Software Foundation, Inc. |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 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" |
| 26 | #include <Logger.h> |
Alexander Chemeris | 1339e42 | 2013-08-29 02:52:13 +0400 | [diff] [blame] | 27 | #include "RTMD.h" |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 28 | |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 29 | bool started = false; |
| 30 | |
Thomas Tsou | 0366985 | 2013-04-08 14:41:11 -0400 | [diff] [blame] | 31 | /* Device side buffers */ |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 32 | static short *rx_buf[CHAN_MAX]; |
| 33 | static short *tx_buf[CHAN_MAX]; |
Thomas Tsou | 0366985 | 2013-04-08 14:41:11 -0400 | [diff] [blame] | 34 | |
| 35 | /* Complex float to short conversion */ |
| 36 | static void floatToShort(short *out, float *in, int num) |
| 37 | { |
| 38 | for (int i = 0; i < num; i++) { |
| 39 | out[2 * i + 0] = (short) in[2 * i + 0]; |
| 40 | out[2 * i + 1] = (short) in[2 * i + 1]; |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | /* Complex short to float conversion */ |
| 45 | static void shortToFloat(float *out, short *in, int num) |
| 46 | { |
| 47 | for (int i = 0; i < num; i++) { |
| 48 | out[2 * i + 0] = (float) in[2 * i + 0]; |
| 49 | out[2 * i + 1] = (float) in[2 * i + 1]; |
| 50 | } |
| 51 | } |
| 52 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 53 | RadioInterface::RadioInterface(RadioDevice *wRadio, |
Thomas Tsou | 41c6657 | 2012-06-05 20:31:28 -0400 | [diff] [blame] | 54 | int wChanM, |
Thomas Tsou | 801ce60 | 2013-04-08 13:45:55 -0400 | [diff] [blame] | 55 | int wSPS, |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 56 | int wReceiveOffset, |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 57 | GSM::Time wStartTime) |
Thomas Tsou | 41c6657 | 2012-06-05 20:31:28 -0400 | [diff] [blame] | 58 | : mChanM(wChanM), underrun(false), sendCursor(0), rcvCursor(0), mOn(false), |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 59 | mRadio(wRadio), receiveOffset(wReceiveOffset), samplesPerSymbol(wSPS), |
| 60 | powerScaling(1.0), loadTest(false) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 61 | { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 62 | mClock.set(wStartTime); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 63 | } |
| 64 | |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 65 | RadioInterface::~RadioInterface(void) |
| 66 | { |
Thomas Tsou | 507e6d4 | 2012-03-16 20:26:46 -0400 | [diff] [blame] | 67 | if (mOn) { |
| 68 | mRadio->stop(); |
| 69 | close(); |
Thomas Tsou | a6ca73c | 2012-03-17 16:47:01 -0400 | [diff] [blame] | 70 | |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 71 | for (int i = 0; i < mChanM; i++) { |
Thomas Tsou | 507e6d4 | 2012-03-16 20:26:46 -0400 | [diff] [blame] | 72 | if (rcvBuffer[i] != NULL) |
| 73 | delete rcvBuffer[i]; |
| 74 | if (sendBuffer[i] != NULL) |
| 75 | delete sendBuffer[i]; |
| 76 | } |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 77 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 78 | } |
| 79 | |
| 80 | double RadioInterface::fullScaleInputValue(void) { |
| 81 | return mRadio->fullScaleInputValue(); |
| 82 | } |
| 83 | |
| 84 | double RadioInterface::fullScaleOutputValue(void) { |
| 85 | return mRadio->fullScaleOutputValue(); |
| 86 | } |
| 87 | |
| 88 | |
Thomas Tsou | 42ade04 | 2013-07-13 18:29:08 +0200 | [diff] [blame] | 89 | void RadioInterface::setPowerAttenuation(double atten, int chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 90 | { |
kurtis.heimerl | 16c6540 | 2011-11-26 03:18:11 +0000 | [diff] [blame] | 91 | double rfGain, digAtten; |
kurtis.heimerl | ee5347a | 2011-11-26 03:18:05 +0000 | [diff] [blame] | 92 | |
Thomas Tsou | 42ade04 | 2013-07-13 18:29:08 +0200 | [diff] [blame] | 93 | rfGain = mRadio->setTxGain(mRadio->maxTxGain() - atten, chan); |
kurtis.heimerl | 16c6540 | 2011-11-26 03:18:11 +0000 | [diff] [blame] | 94 | digAtten = atten - mRadio->maxTxGain() + rfGain; |
kurtis.heimerl | ee5347a | 2011-11-26 03:18:05 +0000 | [diff] [blame] | 95 | |
| 96 | if (digAtten < 1.0) |
| 97 | powerScaling = 1.0; |
| 98 | else |
| 99 | powerScaling = 1.0/sqrt(pow(10, (digAtten/10.0))); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 100 | } |
| 101 | |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 102 | int RadioInterface::radioifyVector(signalVector &wVector, |
| 103 | float *retVector, |
| 104 | float scale, |
| 105 | bool zero) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 106 | { |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 107 | int i; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 108 | signalVector::iterator itr = wVector.begin(); |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 109 | |
| 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 | |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 115 | for (i = 0; i < wVector.size(); i++) { |
| 116 | retVector[2 * i + 0] = itr->real() * scale; |
| 117 | retVector[2 * i + 1] = itr->imag() * scale; |
| 118 | itr++; |
| 119 | } |
| 120 | |
| 121 | return wVector.size(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 122 | } |
| 123 | |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 124 | int RadioInterface::unRadioifyVector(float *floatVector, int offset, |
| 125 | signalVector &newVector) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 126 | { |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 127 | int i; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 128 | signalVector::iterator itr = newVector.begin(); |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 129 | |
| 130 | for (i = 0; i < newVector.size(); i++) { |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 131 | *itr++ = Complex<float>(floatVector[offset + 2 * i + 0], |
| 132 | floatVector[offset + 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 | |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 138 | bool RadioInterface::tuneTx(double freq, int chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 139 | { |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 140 | return mRadio->setTxFreq(freq, chan); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 141 | } |
| 142 | |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 143 | bool RadioInterface::tuneRx(double freq, int chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 144 | { |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 145 | return mRadio->setRxFreq(freq, chan); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 149 | bool RadioInterface::start() |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 150 | { |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 151 | int i; |
| 152 | |
| 153 | if (mOn) |
| 154 | return false; |
| 155 | |
Thomas Tsou | a6ca73c | 2012-03-17 16:47:01 -0400 | [diff] [blame] | 156 | mOn = true; |
Thomas Tsou | ed64e79 | 2013-04-08 13:35:36 -0400 | [diff] [blame] | 157 | #ifdef USRP1 |
Thomas Tsou | a6ca73c | 2012-03-17 16:47:01 -0400 | [diff] [blame] | 158 | mAlignRadioServiceLoopThread = new Thread(32768); |
| 159 | mAlignRadioServiceLoopThread->start((void * (*)(void*))AlignRadioServiceLoopAdapter, |
| 160 | (void*)this); |
Thomas Tsou | ed64e79 | 2013-04-08 13:35:36 -0400 | [diff] [blame] | 161 | #endif |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 162 | writeTimestamp = mRadio->initialWriteTimestamp(); |
| 163 | readTimestamp = mRadio->initialReadTimestamp(); |
Thomas Tsou | 41c6657 | 2012-06-05 20:31:28 -0400 | [diff] [blame] | 164 | for (i = 0; i < mChanM; i++) { |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 165 | sendBuffer[i] = new float[8*2*INCHUNK]; |
| 166 | rcvBuffer[i] = new float[8*2*OUTCHUNK]; |
| 167 | } |
| 168 | |
| 169 | /* Init I/O specific variables if applicable */ |
| 170 | init(); |
| 171 | |
Thomas Tsou | a6ca73c | 2012-03-17 16:47:01 -0400 | [diff] [blame] | 172 | mRadio->start(); |
| 173 | LOG(DEBUG) << "Radio started"; |
| 174 | mRadio->updateAlignment(writeTimestamp-10000); |
| 175 | mRadio->updateAlignment(writeTimestamp-10000); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 176 | |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 177 | return true; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 178 | } |
| 179 | |
Thomas Tsou | 5f13377 | 2012-03-17 15:02:32 -0400 | [diff] [blame] | 180 | bool RadioInterface::stop() |
| 181 | { |
| 182 | if (!mOn) |
| 183 | return false; |
| 184 | |
| 185 | mOn = false; |
| 186 | mRadio->stop(); |
| 187 | } |
| 188 | |
Thomas Tsou | ed64e79 | 2013-04-08 13:35:36 -0400 | [diff] [blame] | 189 | #ifdef USRP1 |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 190 | void *AlignRadioServiceLoopAdapter(RadioInterface *radioInterface) |
| 191 | { |
Thomas Tsou | 5f13377 | 2012-03-17 15:02:32 -0400 | [diff] [blame] | 192 | while (radioInterface->on()) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 193 | radioInterface->alignRadio(); |
| 194 | pthread_testcancel(); |
| 195 | } |
| 196 | return NULL; |
| 197 | } |
| 198 | |
| 199 | void RadioInterface::alignRadio() { |
| 200 | sleep(60); |
| 201 | mRadio->updateAlignment(writeTimestamp+ (TIMESTAMP) 10000); |
| 202 | } |
Thomas Tsou | ed64e79 | 2013-04-08 13:35:36 -0400 | [diff] [blame] | 203 | #endif |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 204 | |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 205 | void RadioInterface::driveTransmitRadio(signalVector **radioBurst, bool *zeroBurst) |
| 206 | { |
| 207 | int i; |
Alexander Chemeris | 4c19200 | 2013-08-29 13:19:12 +0400 | [diff] [blame] | 208 | RTMD_SET("drvTxRadio"); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 209 | |
Alexander Chemeris | 4c19200 | 2013-08-29 13:19:12 +0400 | [diff] [blame] | 210 | if (!mOn) { |
| 211 | RTMD_VAL("drvTxRadio", -1); |
| 212 | RTMD_CLEAR("drvTxRadio"); |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 213 | return; |
Alexander Chemeris | 4c19200 | 2013-08-29 13:19:12 +0400 | [diff] [blame] | 214 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 215 | |
Thomas Tsou | 41c6657 | 2012-06-05 20:31:28 -0400 | [diff] [blame] | 216 | for (i = 0; i < mChanM; i++) { |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 217 | radioifyVector(*radioBurst[i], sendBuffer[i] + 2 * sendCursor, |
| 218 | powerScaling, zeroBurst[i]); |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 219 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 220 | |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 221 | /* |
| 222 | * All bursts should be the same size since all transceivers are |
| 223 | * tied with a single clock in the radio interface. |
| 224 | */ |
| 225 | sendCursor += radioBurst[0]->size(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 226 | |
| 227 | pushBuffer(); |
Alexander Chemeris | 4c19200 | 2013-08-29 13:19:12 +0400 | [diff] [blame] | 228 | RTMD_CLEAR("drvTxRadio"); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 229 | } |
| 230 | |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 231 | static inline void shiftRxBuffers(float **buf, int offset, int len, int chanM) |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 232 | { |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 233 | for (int i = 0; i < chanM; i++) |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 234 | memmove(buf[i], buf[i] + offset, sizeof(float) * len); |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 235 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 236 | |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 237 | void RadioInterface::loadVectors(unsigned tN, int samplesPerBurst, |
| 238 | int idx, GSM::Time rxClock) |
| 239 | { |
| 240 | int i; |
| 241 | |
Thomas Tsou | 41c6657 | 2012-06-05 20:31:28 -0400 | [diff] [blame] | 242 | for (i = 0; i < mChanM; i++) { |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 243 | signalVector rxVector(samplesPerBurst); |
| 244 | unRadioifyVector(rcvBuffer[i], idx * 2, rxVector); |
| 245 | radioVector *rxBurst = new radioVector(rxVector, rxClock); |
| 246 | mReceiveFIFO[i].write(rxBurst); |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 247 | } |
| 248 | } |
| 249 | |
| 250 | void RadioInterface::driveReceiveRadio() |
| 251 | { |
Alexander Chemeris | 9fb1c0b | 2013-09-01 03:15:32 +0400 | [diff] [blame] | 252 | RTMD_SET("drvRxRadio"); |
Alexander Chemeris | 1339e42 | 2013-08-29 02:52:13 +0400 | [diff] [blame] | 253 | if (!mOn) { |
Alexander Chemeris | 9fb1c0b | 2013-09-01 03:15:32 +0400 | [diff] [blame] | 254 | RTMD_VAL("drvRxRadio", -1); |
| 255 | RTMD_CLEAR("drvRxRadio"); |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 256 | return; |
Alexander Chemeris | 1339e42 | 2013-08-29 02:52:13 +0400 | [diff] [blame] | 257 | } |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 258 | |
Alexander Chemeris | 1339e42 | 2013-08-29 02:52:13 +0400 | [diff] [blame] | 259 | if (mReceiveFIFO[0].size() > 8) { |
Alexander Chemeris | 9fb1c0b | 2013-09-01 03:15:32 +0400 | [diff] [blame] | 260 | RTMD_VAL("drvRxRadio", 2); |
| 261 | RTMD_CLEAR("drvRxRadio"); |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 262 | return; |
Alexander Chemeris | 1339e42 | 2013-08-29 02:52:13 +0400 | [diff] [blame] | 263 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 264 | |
| 265 | pullBuffer(); |
| 266 | |
| 267 | GSM::Time rcvClock = mClock.get(); |
| 268 | rcvClock.decTN(receiveOffset); |
| 269 | unsigned tN = rcvClock.TN(); |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 270 | int rcvSz = rcvCursor; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 271 | int readSz = 0; |
| 272 | const int symbolsPerSlot = gSlotLen + 8; |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 273 | int samplesPerBurst = (symbolsPerSlot + (tN % 4 == 0)) * samplesPerSymbol; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 274 | |
| 275 | // while there's enough data in receive buffer, form received |
| 276 | // GSM bursts and pass up to Transceiver |
| 277 | // Using the 157-156-156-156 symbols per timeslot format. |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 278 | while (rcvSz >= samplesPerBurst) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 279 | if (rcvClock.FN() >= 0) { |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 280 | loadVectors(tN, samplesPerBurst, readSz, rcvClock); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 281 | } |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 282 | |
| 283 | mClock.incTN(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 284 | rcvClock.incTN(); |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 285 | |
| 286 | readSz += samplesPerBurst; |
| 287 | rcvSz -= samplesPerBurst; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 288 | |
| 289 | tN = rcvClock.TN(); |
Thomas Tsou | 711e6af | 2012-03-07 19:55:59 -0500 | [diff] [blame] | 290 | samplesPerBurst = (symbolsPerSlot + (tN % 4 == 0)) * samplesPerSymbol; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 291 | } |
| 292 | |
kurtis.heimerl | 9b55783 | 2011-11-26 03:18:34 +0000 | [diff] [blame] | 293 | if (readSz > 0) { |
| 294 | rcvCursor -= readSz; |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 295 | shiftRxBuffers(rcvBuffer, 2 * readSz, 2 * rcvCursor, mChanM); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 296 | } |
Alexander Chemeris | 9fb1c0b | 2013-09-01 03:15:32 +0400 | [diff] [blame] | 297 | RTMD_CLEAR("drvRxRadio"); |
kurtis.heimerl | e724d6d | 2011-11-26 03:18:46 +0000 | [diff] [blame] | 298 | } |
| 299 | |
Thomas Tsou | 42ade04 | 2013-07-13 18:29:08 +0200 | [diff] [blame] | 300 | double RadioInterface::setRxGain(double dB, int chan) |
kurtis.heimerl | e724d6d | 2011-11-26 03:18:46 +0000 | [diff] [blame] | 301 | { |
| 302 | if (mRadio) |
Thomas Tsou | 42ade04 | 2013-07-13 18:29:08 +0200 | [diff] [blame] | 303 | return mRadio->setRxGain(dB, chan); |
kurtis.heimerl | e724d6d | 2011-11-26 03:18:46 +0000 | [diff] [blame] | 304 | else |
| 305 | return -1; |
| 306 | } |
| 307 | |
Thomas Tsou | 42ade04 | 2013-07-13 18:29:08 +0200 | [diff] [blame] | 308 | double RadioInterface::getRxGain(int chan) |
kurtis.heimerl | e724d6d | 2011-11-26 03:18:46 +0000 | [diff] [blame] | 309 | { |
| 310 | if (mRadio) |
Thomas Tsou | 42ade04 | 2013-07-13 18:29:08 +0200 | [diff] [blame] | 311 | return mRadio->getRxGain(chan); |
kurtis.heimerl | e724d6d | 2011-11-26 03:18:46 +0000 | [diff] [blame] | 312 | else |
| 313 | return -1; |
| 314 | } |
Thomas Tsou | 0366985 | 2013-04-08 14:41:11 -0400 | [diff] [blame] | 315 | |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 316 | bool RadioInterface::init() |
| 317 | { |
| 318 | for (int i = 0; i < CHAN_MAX; i++) { |
| 319 | rx_buf[i] = new short[2 * OUTCHUNK]; |
| 320 | tx_buf[i] = new short[4 * 2 * INCHUNK]; |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | void RadioInterface::close() |
| 325 | { |
| 326 | for (int i = 0; i < CHAN_MAX; i++) { |
| 327 | delete rx_buf[i]; |
| 328 | delete tx_buf[i]; |
| 329 | } |
| 330 | } |
| 331 | |
Thomas Tsou | 0366985 | 2013-04-08 14:41:11 -0400 | [diff] [blame] | 332 | /* Receive a timestamped chunk from the device */ |
| 333 | void RadioInterface::pullBuffer() |
| 334 | { |
| 335 | bool local_underrun; |
Alexander Chemeris | 9fb1c0b | 2013-09-01 03:15:32 +0400 | [diff] [blame] | 336 | RTMD_SET("RI-PullBuff"); |
Thomas Tsou | 0366985 | 2013-04-08 14:41:11 -0400 | [diff] [blame] | 337 | |
| 338 | /* Read samples. Fail if we don't get what we want. */ |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 339 | int num_rd = mRadio->readSamples(rx_buf, mChanM, OUTCHUNK, readTimestamp); |
Thomas Tsou | 0366985 | 2013-04-08 14:41:11 -0400 | [diff] [blame] | 340 | |
| 341 | LOG(DEBUG) << "Rx read " << num_rd << " samples from device"; |
| 342 | assert(num_rd == OUTCHUNK); |
| 343 | |
| 344 | underrun |= local_underrun; |
| 345 | readTimestamp += (TIMESTAMP) num_rd; |
| 346 | |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 347 | for (int i = 0; i < mChanM; i++) |
| 348 | shortToFloat(rcvBuffer[i] + 2 * rcvCursor, rx_buf[i], num_rd); |
| 349 | |
Thomas Tsou | 0366985 | 2013-04-08 14:41:11 -0400 | [diff] [blame] | 350 | rcvCursor += num_rd; |
Alexander Chemeris | 9fb1c0b | 2013-09-01 03:15:32 +0400 | [diff] [blame] | 351 | RTMD_CLEAR("RI-PullBuff"); |
Thomas Tsou | 0366985 | 2013-04-08 14:41:11 -0400 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | /* Send timestamped chunk to the device with arbitrary size */ |
| 355 | void RadioInterface::pushBuffer() |
| 356 | { |
Alexander Chemeris | 9fb1c0b | 2013-09-01 03:15:32 +0400 | [diff] [blame] | 357 | RTMD_SET("RI-PushBuff"); |
Alexander Chemeris | 4c19200 | 2013-08-29 13:19:12 +0400 | [diff] [blame] | 358 | if (sendCursor < INCHUNK) { |
Alexander Chemeris | 9fb1c0b | 2013-09-01 03:15:32 +0400 | [diff] [blame] | 359 | RTMD_VAL("RI-PushBuff", -1); |
| 360 | RTMD_CLEAR("RI-PushBuff"); |
Thomas Tsou | 0366985 | 2013-04-08 14:41:11 -0400 | [diff] [blame] | 361 | return; |
Alexander Chemeris | 4c19200 | 2013-08-29 13:19:12 +0400 | [diff] [blame] | 362 | } |
Thomas Tsou | 0366985 | 2013-04-08 14:41:11 -0400 | [diff] [blame] | 363 | |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 364 | for (int i = 0; i < mChanM; i++) |
| 365 | floatToShort(tx_buf[i], sendBuffer[i], sendCursor); |
Thomas Tsou | 0366985 | 2013-04-08 14:41:11 -0400 | [diff] [blame] | 366 | |
| 367 | /* Write samples. Fail if we don't get what we want. */ |
Thomas Tsou | 48f8fb3 | 2013-04-26 19:30:55 -0400 | [diff] [blame] | 368 | int num_smpls = mRadio->writeSamples(tx_buf, mChanM, sendCursor, |
| 369 | writeTimestamp, &underrun); |
Thomas Tsou | 0366985 | 2013-04-08 14:41:11 -0400 | [diff] [blame] | 370 | assert(num_smpls == sendCursor); |
| 371 | |
| 372 | writeTimestamp += (TIMESTAMP) num_smpls; |
| 373 | sendCursor = 0; |
Alexander Chemeris | 9fb1c0b | 2013-09-01 03:15:32 +0400 | [diff] [blame] | 374 | RTMD_CLEAR("RI-PushBuff"); |
Thomas Tsou | 0366985 | 2013-04-08 14:41:11 -0400 | [diff] [blame] | 375 | } |