usrp_lib.cpp 25.2 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
/*******************************************************************************
    OpenAirInterface 
    Copyright(c) 1999 - 2014 Eurecom

    OpenAirInterface is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.


    OpenAirInterface is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with OpenAirInterface.The full GNU General Public License is 
    included in this distribution in the file called "COPYING". If not, 
    see <http://www.gnu.org/licenses/>.

   Contact Information
   OpenAirInterface Admin: openair_admin@eurecom.fr
   OpenAirInterface Tech : openair_tech@eurecom.fr
24
   OpenAirInterface Dev  : openair4g-devel@lists.eurecom.fr
25
  
ghaddab's avatar
ghaddab committed
26
   Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
27 28

 *******************************************************************************/
Raymond Knopp's avatar
 
Raymond Knopp committed
29 30 31

/** usrp_lib.cpp
 *
32
 * \author: HongliangXU : hong-liang-xu@agilent.com
Raymond Knopp's avatar
 
Raymond Knopp committed
33 34 35 36 37 38 39 40
 */

#include <string.h>
#include <pthread.h>
#include <unistd.h>
#include <stdio.h>
#include <uhd/utils/thread_priority.hpp>
#include <uhd/usrp/multi_usrp.hpp>
41
#include <uhd/version.hpp>
Raymond Knopp's avatar
 
Raymond Knopp committed
42 43 44 45 46 47
#include <boost/lexical_cast.hpp>
#include <boost/algorithm/string.hpp>
#include <iostream>
#include <complex>
#include <fstream>
#include <cmath>
48

Raymond Knopp's avatar
 
Raymond Knopp committed
49
#include "common_lib.h"
50 51 52 53 54 55 56
#ifdef __SSE4_1__
#  include <smmintrin.h>
#endif
 
#ifdef __AVX2__
#  include <immintrin.h>
#endif
57

58 59 60 61
#ifdef __arm__
#  include <arm_neon.h>
#endif

62 63 64 65 66
/** @addtogroup _USRP_PHY_RF_INTERFACE_
 * @{
 */

/*! \brief USRP Configuration */ 
Raymond Knopp's avatar
 
Raymond Knopp committed
67 68 69 70 71 72
typedef struct
{

  // --------------------------------
  // variables for USRP configuration
  // --------------------------------
73
  //! USRP device pointer
Raymond Knopp's avatar
 
Raymond Knopp committed
74 75
  uhd::usrp::multi_usrp::sptr usrp;
  //uhd::usrp::multi_usrp::sptr rx_usrp;
76
  
Raymond Knopp's avatar
 
Raymond Knopp committed
77
  //create a send streamer and a receive streamer
78
  //! USRP TX Stream
Raymond Knopp's avatar
 
Raymond Knopp committed
79
  uhd::tx_streamer::sptr tx_stream;
80
  //! USRP RX Stream
Raymond Knopp's avatar
 
Raymond Knopp committed
81 82
  uhd::rx_streamer::sptr rx_stream;

83
  //! USRP TX Metadata
Raymond Knopp's avatar
 
Raymond Knopp committed
84
  uhd::tx_metadata_t tx_md;
85
  //! USRP RX Metadata
Raymond Knopp's avatar
 
Raymond Knopp committed
86 87
  uhd::rx_metadata_t rx_md;

88
  //! USRP Timestamp Information
Raymond Knopp's avatar
 
Raymond Knopp committed
89
  uhd::time_spec_t tm_spec;
90

Raymond Knopp's avatar
 
Raymond Knopp committed
91
  //setup variables and allocate buffer
92
  //! USRP Metadata
Raymond Knopp's avatar
 
Raymond Knopp committed
93 94
  uhd::async_metadata_t async_md;

95
  //! Sampling rate
Raymond Knopp's avatar
 
Raymond Knopp committed
96
  double sample_rate;
97 98

  //! time offset between transmiter timestamp and receiver timestamp;
Raymond Knopp's avatar
 
Raymond Knopp committed
99
  double tdiff;
100 101

  //! TX forward samples. We use usrp_time_offset to get this value
Raymond Knopp's avatar
 
Raymond Knopp committed
102 103 104 105 106 107
  int tx_forward_nsamps; //166 for 20Mhz


  // --------------------------------
  // Debug and output control
  // --------------------------------
108
  //! Number of underflows
Raymond Knopp's avatar
 
Raymond Knopp committed
109
  int num_underflows;
110
  //! Number of overflows
Raymond Knopp's avatar
 
Raymond Knopp committed
111
  int num_overflows;
112 113
  
  //! Number of sequential errors
Raymond Knopp's avatar
 
Raymond Knopp committed
114
  int num_seq_errors;
115
  //! tx count
Raymond Knopp's avatar
 
Raymond Knopp committed
116
  int64_t tx_count;
117
  //! rx count
Raymond Knopp's avatar
 
Raymond Knopp committed
118
  int64_t rx_count;
119
  //! timestamp of RX packet
Raymond Knopp's avatar
 
Raymond Knopp committed
120 121 122 123
  openair0_timestamp rx_timestamp;

} usrp_state_t;

124 125 126
/*! \brief Called to start the USRP transceiver. Return 0 if OK, < 0 if error
    @param device pointer to the device structure specific to the RF hardware target
*/
Raymond Knopp's avatar
 
Raymond Knopp committed
127 128 129 130 131 132
static int trx_usrp_start(openair0_device *device)
{
  usrp_state_t *s = (usrp_state_t*)device->priv;

  // init recv and send streaming
  uhd::stream_cmd_t cmd(uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS);
Raymond Knopp's avatar
 
Raymond Knopp committed
133
  cmd.time_spec = s->usrp->get_time_now() + uhd::time_spec_t(0.05);
Raymond Knopp's avatar
 
Raymond Knopp committed
134 135 136
  cmd.stream_now = false; // start at constant delay
  s->rx_stream->issue_stream_cmd(cmd);

Raymond Knopp's avatar
 
Raymond Knopp committed
137
  s->tx_md.time_spec = cmd.time_spec + uhd::time_spec_t(1-(double)s->tx_forward_nsamps/s->sample_rate);
Raymond Knopp's avatar
 
Raymond Knopp committed
138 139 140 141 142 143 144 145
  s->tx_md.has_time_spec = true;
  s->tx_md.start_of_burst = true;
  s->tx_md.end_of_burst = false;


  s->rx_count = 0;
  s->tx_count = 0;
  s->rx_timestamp = 0;
146 147

  return 0;
Raymond Knopp's avatar
 
Raymond Knopp committed
148
}
149 150 151
/*! \brief Terminate operation of the USRP transceiver -- free all associated resources 
 * \param device the hardware to use
 */
Raymond Knopp's avatar
 
Raymond Knopp committed
152 153 154 155 156 157
static void trx_usrp_end(openair0_device *device)
{
  usrp_state_t *s = (usrp_state_t*)device->priv;

  s->rx_stream->issue_stream_cmd(uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS);

navid's avatar
navid committed
158 159 160 161 162
  //send a mini EOB packet
  s->tx_md.end_of_burst = true;
  s->tx_stream->send("", 0, s->tx_md);
  s->tx_md.end_of_burst = false;
  
Raymond Knopp's avatar
 
Raymond Knopp committed
163
}
164

165 166 167 168 169 170 171 172
/*! \brief Called to send samples to the USRP RF target
      @param device pointer to the device structure specific to the RF hardware target
      @param timestamp The timestamp at whicch the first sample MUST be sent 
      @param buff Buffer which holds the samples
      @param nsamps number of samples to be sent
      @param antenna_id index of the antenna if the device has multiple anteannas
      @param flags flags must be set to TRUE if timestamp parameter needs to be applied
*/ 
173
static int trx_usrp_write(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps, int cc, int flags)
Raymond Knopp's avatar
 
Raymond Knopp committed
174
{
175
  int ret;
Raymond Knopp's avatar
 
Raymond Knopp committed
176
  usrp_state_t *s = (usrp_state_t*)device->priv;
Raymond Knopp's avatar
Raymond Knopp committed
177

178
  s->tx_md.time_spec = uhd::time_spec_t::from_ticks(timestamp, s->sample_rate);
Raymond Knopp's avatar
Raymond Knopp committed
179

180
  
Raymond Knopp's avatar
 
Raymond Knopp committed
181 182 183 184
  if(flags)
    s->tx_md.has_time_spec = true;
  else
    s->tx_md.has_time_spec = false;
185
  
Raymond Knopp's avatar
Raymond Knopp committed
186 187 188
  if (cc>1) {
    std::vector<void *> buff_ptrs;
    for (int i=0;i<cc;i++) buff_ptrs.push_back(buff[i]);
189
    ret = (int)s->tx_stream->send(buff_ptrs, nsamps, s->tx_md,1e-3);
Raymond Knopp's avatar
Raymond Knopp committed
190 191
  }
  else
192 193
    ret = (int)s->tx_stream->send(buff[0], nsamps, s->tx_md,1e-3);

Raymond Knopp's avatar
 
Raymond Knopp committed
194
  s->tx_md.start_of_burst = false;
195

196 197 198 199 200
  if (ret != nsamps) {
    printf("[xmit] tx samples %d != %d\n",ret,nsamps);
  }
      
  return ret;
Raymond Knopp's avatar
 
Raymond Knopp committed
201 202
}

203 204 205 206 207 208 209 210 211 212 213
/*! \brief Receive samples from hardware.
 * Read \ref nsamps samples from each channel to buffers. buff[0] is the array for
 * the first channel. *ptimestamp is the time at which the first sample
 * was received.
 * \param device the hardware to use
 * \param[out] ptimestamp the time at which the first sample was received.
 * \param[out] buff An array of pointers to buffers for received samples. The buffers must be large enough to hold the number of samples \ref nsamps.
 * \param nsamps Number of samples. One sample is 2 byte I + 2 byte Q => 4 byte.
 * \param antenna_id Index of antenna for which to receive samples
 * \returns the number of sample read
*/
Raymond Knopp's avatar
 
Raymond Knopp committed
214
static int trx_usrp_read(openair0_device *device, openair0_timestamp *ptimestamp, void **buff, int nsamps, int cc)
Raymond Knopp's avatar
 
Raymond Knopp committed
215
{
216 217 218 219 220 221
   usrp_state_t *s = (usrp_state_t*)device->priv;
   int samples_received=0,i,j;
   int nsamps2;  // aligned to upper 32 or 16 byte boundary
#if defined(__x86_64) || defined(__i386__)
#ifdef __AVX2__
   nsamps2 = (nsamps+7)>>3;
222
   __m256i buff_tmp[2][nsamps2];
223 224
#else
   nsamps2 = (nsamps+3)>>2;
225
   __m128i buff_tmp[2][nsamps2];
226 227 228
#endif
#elif defined(__arm__)
   nsamps2 = (nsamps+3)>>2;
229
   int16x8_t buff_tmp[2][nsamps2];
230 231
#endif

Raymond Knopp's avatar
 
Raymond Knopp committed
232

233
  if (device->type == USRP_B200_DEV) {  
234
    if (cc>1) {
235
    // receive multiple channels (e.g. RF A and RF B)
236
      std::vector<void *> buff_ptrs;
237
 
238 239 240
      for (int i=0;i<cc;i++) buff_ptrs.push_back(buff_tmp[i]);
      samples_received = s->rx_stream->recv(buff_ptrs, nsamps, s->rx_md);
    } else {
241
    // receive a single channel (e.g. from connector RF A)
242 243
      samples_received = s->rx_stream->recv(buff_tmp[0], nsamps, s->rx_md);
    }
244

245
  // bring RX data into 12 LSBs for softmodem RX
246 247
    for (int i=0;i<cc;i++) {
      for (int j=0; j<nsamps2; j++) {      
248 249
#if defined(__x86_64__) || defined(__i386__)
#ifdef __AVX2__
250
        ((__m256i *)buff[i])[j] = _mm256_srai_epi16(buff_tmp[i][j],4);
251
#else
252
        ((__m128i *)buff[i])[j] = _mm_srai_epi16(buff_tmp[i][j],4);
253 254
#endif
#elif defined(__arm__)
255
        ((int16x8_t*)buff[i])[j] = vshrq_n_s16(buff_tmp[i][j],4);
256
#endif
257
      }
258
    }
259
  } else if (device->type == USRP_X300_DEV) {
260
    if (cc>1) { 
261 262 263 264 265 266 267 268
    // receive multiple channels (e.g. RF A and RF B)
      std::vector<void *> buff_ptrs;
 
      for (int i=0;i<cc;i++) buff_ptrs.push_back(buff[i]);
      samples_received = s->rx_stream->recv(buff_ptrs, nsamps, s->rx_md);
    } else {
    // receive a single channel (e.g. from connector RF A)
      samples_received = s->rx_stream->recv(buff[0], nsamps, s->rx_md);
269
    }
270
  }
271

Raymond Knopp's avatar
 
Raymond Knopp committed
272 273 274 275
  if (samples_received < nsamps) {
    printf("[recv] received %d samples out of %d\n",samples_received,nsamps);
    
  }
276

Raymond Knopp's avatar
 
Raymond Knopp committed
277 278 279 280 281 282 283 284 285 286 287 288 289 290 291
  //handle the error code
  switch(s->rx_md.error_code){
  case uhd::rx_metadata_t::ERROR_CODE_NONE:
    break;
  case uhd::rx_metadata_t::ERROR_CODE_OVERFLOW:
    printf("[recv] USRP RX OVERFLOW!\n");
    s->num_overflows++;
    break;
  case uhd::rx_metadata_t::ERROR_CODE_TIMEOUT:
    printf("[recv] USRP RX TIMEOUT!\n");
    break;
  default:
    printf("[recv] Unexpected error on RX, Error code: 0x%x\n",s->rx_md.error_code);
    break;
  }
Raymond Knopp's avatar
 
Raymond Knopp committed
292 293 294
  s->rx_count += nsamps;
  s->rx_timestamp = s->rx_md.time_spec.to_ticks(s->sample_rate);
  *ptimestamp = s->rx_timestamp;
295

Raymond Knopp's avatar
 
Raymond Knopp committed
296 297 298
  return samples_received;
}

299 300 301
/*! \brief Get current timestamp of USRP
 * \param device the hardware to use
*/
Raymond Knopp's avatar
 
Raymond Knopp committed
302 303 304 305 306 307 308 309
openair0_timestamp get_usrp_time(openair0_device *device) 
{
 
  usrp_state_t *s = (usrp_state_t*)device->priv;
  
  return s->usrp->get_time_now().to_ticks(s->sample_rate);
} 

310 311 312 313
/*! \brief Compares two variables within precision
 * \param a first variable
 * \param b second variable
*/
Raymond Knopp's avatar
 
Raymond Knopp committed
314 315 316 317
static bool is_equal(double a, double b)
{
  return std::fabs(a-b) < std::numeric_limits<double>::epsilon();
}
Raymond Knopp's avatar
 
Raymond Knopp committed
318

319 320 321 322 323 324
/*! \brief Set frequencies (TX/RX)
 * \param device the hardware to use
 * \param openair0_cfg RF frontend parameters set by application
 * \param dummy dummy variable not used
 * \returns 0 in success 
 */
325
int trx_usrp_set_freq(openair0_device* device, openair0_config_t *openair0_cfg, int dummy) {
Raymond Knopp's avatar
 
Raymond Knopp committed
326 327 328

  usrp_state_t *s = (usrp_state_t*)device->priv;

329
  printf("Setting USRP TX Freq %f, RX Freq %f\n",openair0_cfg[0].tx_freq[0],openair0_cfg[0].rx_freq[0]);
Raymond Knopp's avatar
 
Raymond Knopp committed
330 331 332 333 334 335 336
  s->usrp->set_tx_freq(openair0_cfg[0].tx_freq[0]);
  s->usrp->set_rx_freq(openair0_cfg[0].rx_freq[0]);

  return(0);
  
}

337 338 339 340 341
/*! \brief Set RX frequencies 
 * \param device the hardware to use
 * \param openair0_cfg RF frontend parameters set by application
 * \returns 0 in success 
 */
Raymond Knopp's avatar
 
Raymond Knopp committed
342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358
int openair0_set_rx_frequencies(openair0_device* device, openair0_config_t *openair0_cfg) {

  usrp_state_t *s = (usrp_state_t*)device->priv;
  static int first_call=1;
  static double rf_freq,diff;

  uhd::tune_request_t rx_tune_req(openair0_cfg[0].rx_freq[0]);

  rx_tune_req.rf_freq_policy = uhd::tune_request_t::POLICY_MANUAL;
  rx_tune_req.rf_freq = openair0_cfg[0].rx_freq[0];
  rf_freq=openair0_cfg[0].rx_freq[0];
  s->usrp->set_rx_freq(rx_tune_req);

  return(0);
  
}

359 360 361 362 363
/*! \brief Set Gains (TX/RX)
 * \param device the hardware to use
 * \param openair0_cfg RF frontend parameters set by application
 * \returns 0 in success 
 */
364
int trx_usrp_set_gains(openair0_device* device, 
365
		       openair0_config_t *openair0_cfg) {
Raymond Knopp's avatar
 
Raymond Knopp committed
366 367 368 369

  usrp_state_t *s = (usrp_state_t*)device->priv;

  s->usrp->set_tx_gain(openair0_cfg[0].tx_gain[0]);
370 371 372 373 374 375 376 377 378
  ::uhd::gain_range_t gain_range = s->usrp->get_rx_gain_range(0);
  // limit to maximum gain
  if (openair0_cfg[0].rx_gain[0]-openair0_cfg[0].rx_gain_offset[0] > gain_range.stop()) {
    
    printf("RX Gain 0 too high, reduce by %f dB\n",
	   openair0_cfg[0].rx_gain[0]-openair0_cfg[0].rx_gain_offset[0] - gain_range.stop());	   
    exit(-1);
  }
  s->usrp->set_rx_gain(openair0_cfg[0].rx_gain[0]-openair0_cfg[0].rx_gain_offset[0]);
379
  printf("Setting USRP RX gain to %f (rx_gain %f,gain_range.stop() %f)\n", openair0_cfg[0].rx_gain[0]-openair0_cfg[0].rx_gain_offset[0],openair0_cfg[0].rx_gain[0],gain_range.stop());
380

Raymond Knopp's avatar
 
Raymond Knopp committed
381 382
  return(0);
}
383

384 385 386
/*! \brief Stop USRP
 * \param card refers to the hardware index to use
 */
387
int trx_usrp_stop(openair0_device* device) {
388 389
  return(0);
}
390

391
/*! \brief USRPB210 RX calibration table */
392
rx_gain_calib_table_t calib_table_b210[] = {
Raymond Knopp's avatar
Raymond Knopp committed
393 394 395 396 397
  {3500000000.0,44.0},
  {2660000000.0,49.0},
  {2300000000.0,50.0},
  {1880000000.0,53.0},
  {816000000.0,58.0},
398 399
  {-1,0}};

400
/*! \brief USRPB210 RX calibration table */
401 402 403 404 405 406
rx_gain_calib_table_t calib_table_b210_38[] = {
  {3500000000.0,44.0},
  {2660000000.0,49.8},
  {2300000000.0,51.0},
  {1880000000.0,53.0},
  {816000000.0,57.0},
407 408
  {-1,0}};

409
/*! \brief USRPx310 RX calibration table */
410 411
rx_gain_calib_table_t calib_table_x310[] = {
  {3500000000.0,77.0},
412
  {2660000000.0,81.0},
413 414
  {2300000000.0,81.0},
  {1880000000.0,82.0},
415
  {816000000.0,85.0},
416 417
  {-1,0}};

418 419 420 421 422
/*! \brief Set RX gain offset 
 * \param openair0_cfg RF frontend parameters set by application
 * \param chain_index RF chain to apply settings to
 * \returns 0 in success 
 */
423
void set_rx_gain_offset(openair0_config_t *openair0_cfg, int chain_index,int bw_gain_adjust) {
424 425 426

  int i=0;
  // loop through calibration table to find best adjustment factor for RX frequency
427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452
  double min_diff = 6e9,diff,gain_adj=0.0;
  if (bw_gain_adjust==1) {
    switch ((int)openair0_cfg[0].sample_rate) {
    case 30720000:      
      break;
    case 23040000:
      gain_adj=1.25;
      break;
    case 15360000:
      gain_adj=3.0;
      break;
    case 7680000:
      gain_adj=6.0;
      break;
    case 3840000:
      gain_adj=9.0;
      break;
    case 1920000:
      gain_adj=12.0;
      break;
    default:
      printf("unknown sampling rate %d\n",(int)openair0_cfg[0].sample_rate);
      exit(-1);
      break;
    }
  }
453 454
  while (openair0_cfg->rx_gain_calib_table[i].freq>0) {
    diff = fabs(openair0_cfg->rx_freq[chain_index] - openair0_cfg->rx_gain_calib_table[i].freq);
455
    printf("cal %d: freq %f, offset %f, diff %f\n",
456 457 458
	   i,
	   openair0_cfg->rx_gain_calib_table[i].freq,
	   openair0_cfg->rx_gain_calib_table[i].offset,diff);
459 460
    if (min_diff > diff) {
      min_diff = diff;
461
      openair0_cfg->rx_gain_offset[chain_index] = openair0_cfg->rx_gain_calib_table[i].offset+gain_adj;
462 463 464 465 466 467
    }
    i++;
  }
  
}

468 469 470 471
/*! \brief print the USRP statistics  
* \param device the hardware to use
* \returns  0 on success
*/
472
int trx_usrp_get_stats(openair0_device* device) {
473

474 475 476
  return(0);

}
477 478 479 480 481

/*! \brief Reset the USRP statistics  
* \param device the hardware to use
* \returns  0 on success
*/
482
int trx_usrp_reset_stats(openair0_device* device) {
483 484 485 486

  return(0);

}
487

488

489

490
extern "C" {
491 492 493 494
/*! \brief Initialize Openair USRP target. It returns 0 if OK
* \param device the hardware to use
* \param openair0_cfg RF frontend parameters set by application
*/
495
  int device_init(openair0_device* device, openair0_config_t *openair0_cfg) {
496
    
497 498 499 500 501
    uhd::set_thread_priority_safe(1.0);
    usrp_state_t *s = (usrp_state_t*)malloc(sizeof(usrp_state_t));
    memset(s, 0, sizeof(usrp_state_t));
    
    // Initialize USRP device
Raymond Knopp's avatar
 
Raymond Knopp committed
502

Raymond Knopp's avatar
 
Raymond Knopp committed
503

Raymond Knopp's avatar
 
Raymond Knopp committed
504
  std::string args = "type=b200";
Raymond Knopp's avatar
Raymond Knopp committed
505 506


Raymond Knopp's avatar
 
Raymond Knopp committed
507
  uhd::device_addrs_t device_adds = uhd::device::find(args);
Raymond Knopp's avatar
 
Raymond Knopp committed
508
  size_t i;
509 510 511 512 513
  
  int vers=0,subvers=0,subsubvers=0;
  int bw_gain_adjust=0;

  sscanf(uhd::get_version_string().c_str(),"%d.%d.%d",&vers,&subvers,&subsubvers);
Raymond Knopp's avatar
 
Raymond Knopp committed
514

515
  printf("Checking for USRPs : UHD %s (%d.%d.%d)\n",uhd::get_version_string().c_str(),vers,subvers,subsubvers);
516
  
Raymond Knopp's avatar
 
Raymond Knopp committed
517 518
  if(device_adds.size() == 0)
  {
519 520 521 522 523 524 525 526
    double usrp_master_clock = 184.32e6;

    std::string args = "type=x300";
    
    // workaround for an api problem, master clock has to be set with the constructor not via set_master_clock_rate
    args += boost::str(boost::format(",master_clock_rate=%f") % usrp_master_clock);
    
    uhd::device_addrs_t device_adds = uhd::device::find(args);
Raymond Knopp's avatar
 
Raymond Knopp committed
527

528 529 530 531 532
    if(device_adds.size() == 0)
    {
      std::cerr<<"No USRP Device Found. " << std::endl;
      free(s);
      return -1;
Raymond Knopp's avatar
Raymond Knopp committed
533

534
    }
Raymond Knopp's avatar
Raymond Knopp committed
535

536

537 538 539 540 541 542 543 544
    printf("Found USRP X300\n");
    s->usrp = uhd::usrp::multi_usrp::make(args);
    //  s->usrp->set_rx_subdev_spec(rx_subdev);
    //  s->usrp->set_tx_subdev_spec(tx_subdev);

    // lock mboard clocks
    s->usrp->set_clock_source("internal");
    
545
    //Setting device type to USRP X300/X310 
546
    device->type=USRP_X300_DEV;
547

548 549 550
    // this is not working yet, master clock has to be set via constructor
    // set master clock rate and sample rate for tx & rx for streaming
    //s->usrp->set_master_clock_rate(usrp_master_clock);
551 552

    openair0_cfg[0].rx_gain_calib_table = calib_table_x310;
553
    
554 555
    switch ((int)openair0_cfg[0].sample_rate) {
    case 30720000:
556 557 558
            // from usrp_time_offset
      openair0_cfg[0].samples_per_packet    = 2048;
      openair0_cfg[0].tx_sample_advance     = 15;
559 560
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
561
      break;
562
    case 15360000:
563 564
      openair0_cfg[0].samples_per_packet    = 2048;
      openair0_cfg[0].tx_sample_advance     = 45;
565 566
      openair0_cfg[0].tx_bw                 = 10e6;
      openair0_cfg[0].rx_bw                 = 10e6;
567
      break;
568
    case 7680000:
569 570
      openair0_cfg[0].samples_per_packet    = 1024;
      openair0_cfg[0].tx_sample_advance     = 50;
571 572
      openair0_cfg[0].tx_bw                 = 5e6;
      openair0_cfg[0].rx_bw                 = 5e6;
573
      break;
574
    case 1920000:
575 576
      openair0_cfg[0].samples_per_packet    = 256;
      openair0_cfg[0].tx_sample_advance     = 50;
577 578
      openair0_cfg[0].tx_bw                 = 1.25e6;
      openair0_cfg[0].rx_bw                 = 1.25e6;
579 580 581 582 583 584 585
      break;
    default:
      printf("Error: unknown sampling rate %f\n",openair0_cfg[0].sample_rate);
      exit(-1);
      break;
    }

586 587
  } else {
    printf("Found USRP B200");
588
    args += ",num_recv_frames=256" ; 
589 590 591 592
    s->usrp = uhd::usrp::multi_usrp::make(args);

    //  s->usrp->set_rx_subdev_spec(rx_subdev);
    //  s->usrp->set_tx_subdev_spec(tx_subdev);
593 594 595 596
    
    // do not explicitly set the clock to "internal", because this will disable the gpsdo
    //    // lock mboard clocks
    //    s->usrp->set_clock_source("internal");
597
    // set master clock rate and sample rate for tx & rx for streaming
598

599
    device->type = USRP_B200_DEV;
600

Raymond Knopp's avatar
Raymond Knopp committed
601

602 603 604 605 606 607 608 609
    if ((vers == 3) && (subvers == 9) && (subsubvers>=2)) {
      openair0_cfg[0].rx_gain_calib_table = calib_table_b210;
      bw_gain_adjust=0;
    }
    else {
      openair0_cfg[0].rx_gain_calib_table = calib_table_b210_38;
      bw_gain_adjust=1;
    }
610

611 612
    switch ((int)openair0_cfg[0].sample_rate) {
    case 30720000:
613
      s->usrp->set_master_clock_rate(30.72e6);
614
      openair0_cfg[0].tx_sample_advance     = 115;
615 616
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
617
      break;
618
    case 23040000:
619
      s->usrp->set_master_clock_rate(23.04e6); //to be checked
620
      openair0_cfg[0].tx_sample_advance     = 113;
621 622
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
623
      break;
624
    case 15360000:
625
      s->usrp->set_master_clock_rate(30.72e06);
626
      openair0_cfg[0].tx_sample_advance     = 103; 
627 628
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
629
      break;
630
    case 7680000:
Rohit Gupta's avatar
Rohit Gupta committed
631
      s->usrp->set_master_clock_rate(30.72e6);
632
      openair0_cfg[0].tx_sample_advance     = 80;
633 634
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
635
      break;
636
    case 1920000:
637
      s->usrp->set_master_clock_rate(30.72e6);
638
      openair0_cfg[0].tx_sample_advance     = 40;
639 640
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
641 642 643 644 645 646 647
      break;
    default:
      printf("Error: unknown sampling rate %f\n",openair0_cfg[0].sample_rate);
      exit(-1);
      break;
    }
  }
Raymond Knopp's avatar
Raymond Knopp committed
648

649
  /* device specific */
650 651
  //openair0_cfg[0].txlaunch_wait = 1;//manage when TX processing is triggered
  //openair0_cfg[0].txlaunch_wait_slotcount = 1; //manage when TX processing is triggered
652 653
  openair0_cfg[0].iq_txshift = 4;//shift
  openair0_cfg[0].iq_rxrescale = 15;//rescale iqs
654
  
Raymond Knopp's avatar
 
Raymond Knopp committed
655
  for(i=0;i<s->usrp->get_rx_num_channels();i++) {
Raymond Knopp's avatar
 
Raymond Knopp committed
656
    if (i<openair0_cfg[0].rx_num_channels) {
Raymond Knopp's avatar
Raymond Knopp committed
657
      s->usrp->set_rx_rate(openair0_cfg[0].sample_rate,i);
658 659
      //s->usrp->set_rx_bandwidth(openair0_cfg[0].rx_bw,i);
      //printf("Setting rx freq/gain on channel %lu/%lu : BW %f (readback %f)\n",i,s->usrp->get_rx_num_channels(),openair0_cfg[0].rx_bw/1e6,s->usrp->get_rx_bandwidth(i)/1e6);
Raymond Knopp's avatar
Raymond Knopp committed
660
      s->usrp->set_rx_freq(openair0_cfg[0].rx_freq[i],i);
661
      set_rx_gain_offset(&openair0_cfg[0],i,bw_gain_adjust);
662 663 664 665 666 667 668 669 670 671 672 673

      ::uhd::gain_range_t gain_range = s->usrp->get_rx_gain_range(i);
      // limit to maximum gain
      if (openair0_cfg[0].rx_gain[i]-openair0_cfg[0].rx_gain_offset[i] > gain_range.stop()) {
	
        printf("RX Gain %lu too high, lower by %f dB\n",i,openair0_cfg[0].rx_gain[i]-openair0_cfg[0].rx_gain_offset[i] - gain_range.stop());
	exit(-1);
      }
      s->usrp->set_rx_gain(openair0_cfg[0].rx_gain[i]-openair0_cfg[0].rx_gain_offset[i],i);
      printf("RX Gain %lu %f (%f) => %f (max %f)\n",i,
	     openair0_cfg[0].rx_gain[i],openair0_cfg[0].rx_gain_offset[i],
	     openair0_cfg[0].rx_gain[i]-openair0_cfg[0].rx_gain_offset[i],gain_range.stop());
Raymond Knopp's avatar
 
Raymond Knopp committed
674 675
    }
  }
Raymond Knopp's avatar
 
Raymond Knopp committed
676
  for(i=0;i<s->usrp->get_tx_num_channels();i++) {
Raymond Knopp's avatar
 
Raymond Knopp committed
677
    if (i<openair0_cfg[0].tx_num_channels) {
Raymond Knopp's avatar
Raymond Knopp committed
678
      s->usrp->set_tx_rate(openair0_cfg[0].sample_rate,i);
679 680
      //s->usrp->set_tx_bandwidth(openair0_cfg[0].tx_bw,i);
      //printf("Setting tx freq/gain on channel %lu/%lu: BW %f (readback %f)\n",i,s->usrp->get_tx_num_channels(),openair0_cfg[0].tx_bw/1e6,s->usrp->get_tx_bandwidth(i)/1e6);
Raymond Knopp's avatar
Raymond Knopp committed
681 682
      s->usrp->set_tx_freq(openair0_cfg[0].tx_freq[i],i);
      s->usrp->set_tx_gain(openair0_cfg[0].tx_gain[i],i);
Raymond Knopp's avatar
 
Raymond Knopp committed
683 684
    }
  }
Raymond Knopp's avatar
Raymond Knopp committed
685 686


Raymond Knopp's avatar
 
Raymond Knopp committed
687 688
  // display USRP settings
  std::cout << boost::format("Actual master clock: %fMHz...") % (s->usrp->get_master_clock_rate()/1e6) << std::endl;
689 690
  
  sleep(1);
Raymond Knopp's avatar
 
Raymond Knopp committed
691 692

  // create tx & rx streamer
Raymond Knopp's avatar
 
Raymond Knopp committed
693
  uhd::stream_args_t stream_args_rx("sc16", "sc16");
Raymond Knopp's avatar
 
Raymond Knopp committed
694
  //stream_args_rx.args["spp"] = str(boost::format("%d") % 2048);//(openair0_cfg[0].rx_num_channels*openair0_cfg[0].samples_per_packet));
Raymond Knopp's avatar
 
Raymond Knopp committed
695
  for (i = 0; i<openair0_cfg[0].rx_num_channels; i++)
Raymond Knopp's avatar
 
Raymond Knopp committed
696 697 698 699 700 701 702
    stream_args_rx.channels.push_back(i);
  s->rx_stream = s->usrp->get_rx_stream(stream_args_rx);
  std::cout << boost::format("rx_max_num_samps %u") % (s->rx_stream->get_max_num_samps()) << std::endl;
  //openair0_cfg[0].samples_per_packet = s->rx_stream->get_max_num_samps();

  uhd::stream_args_t stream_args_tx("sc16", "sc16");
  //stream_args_tx.args["spp"] = str(boost::format("%d") % 2048);//(openair0_cfg[0].tx_num_channels*openair0_cfg[0].samples_per_packet));
Raymond Knopp's avatar
 
Raymond Knopp committed
703
  for (i = 0; i<openair0_cfg[0].tx_num_channels; i++)
Raymond Knopp's avatar
 
Raymond Knopp committed
704 705
      stream_args_tx.channels.push_back(i);
  s->tx_stream = s->usrp->get_tx_stream(stream_args_tx);
Raymond Knopp's avatar
 
Raymond Knopp committed
706 707
  std::cout << boost::format("tx_max_num_samps %u") % (s->tx_stream->get_max_num_samps()) << std::endl;

Raymond Knopp's avatar
 
Raymond Knopp committed
708

709 710 711 712 713
 /* Setting TX/RX BW after streamers are created due to USRP calibration issue */
  for(i=0;i<s->usrp->get_tx_num_channels();i++) {
    if (i<openair0_cfg[0].tx_num_channels) {
      s->usrp->set_tx_bandwidth(openair0_cfg[0].tx_bw,i);
      printf("Setting tx freq/gain on channel %lu/%lu: BW %f (readback %f)\n",i,s->usrp->get_tx_num_channels(),openair0_cfg[0].tx_bw/1e6,s->usrp->get_tx_bandwidth(i)/1e6);
Rohit Gupta's avatar
Rohit Gupta committed
714 715 716 717 718
    }
  }
  for(i=0;i<s->usrp->get_rx_num_channels();i++) {
    if (i<openair0_cfg[0].rx_num_channels) {
      s->usrp->set_rx_bandwidth(openair0_cfg[0].rx_bw,i);
719 720 721 722
      printf("Setting rx freq/gain on channel %lu/%lu : BW %f (readback %f)\n",i,s->usrp->get_rx_num_channels(),openair0_cfg[0].rx_bw/1e6,s->usrp->get_rx_bandwidth(i)/1e6);
    }
  }

Raymond Knopp's avatar
 
Raymond Knopp committed
723
  s->usrp->set_time_now(uhd::time_spec_t(0.0));
724
 
725

Raymond Knopp's avatar
Raymond Knopp committed
726 727
  for (i=0;i<openair0_cfg[0].rx_num_channels;i++) {
    if (i<openair0_cfg[0].rx_num_channels) {
Raymond Knopp's avatar
 
Raymond Knopp committed
728
      printf("RX Channel %lu\n",i);
Raymond Knopp's avatar
Raymond Knopp committed
729 730 731 732 733 734 735 736 737 738 739
      std::cout << boost::format("Actual RX sample rate: %fMSps...") % (s->usrp->get_rx_rate(i)/1e6) << std::endl;
      std::cout << boost::format("Actual RX frequency: %fGHz...") % (s->usrp->get_rx_freq(i)/1e9) << std::endl;
      std::cout << boost::format("Actual RX gain: %f...") % (s->usrp->get_rx_gain(i)) << std::endl;
      std::cout << boost::format("Actual RX bandwidth: %fM...") % (s->usrp->get_rx_bandwidth(i)/1e6) << std::endl;
      std::cout << boost::format("Actual RX antenna: %s...") % (s->usrp->get_rx_antenna(i)) << std::endl;
    }
  }

  for (i=0;i<openair0_cfg[0].tx_num_channels;i++) {

    if (i<openair0_cfg[0].tx_num_channels) { 
Raymond Knopp's avatar
 
Raymond Knopp committed
740
      printf("TX Channel %lu\n",i);
Raymond Knopp's avatar
Raymond Knopp committed
741 742 743 744 745 746 747 748
      std::cout << std::endl<<boost::format("Actual TX sample rate: %fMSps...") % (s->usrp->get_tx_rate(i)/1e6) << std::endl;
      std::cout << boost::format("Actual TX frequency: %fGHz...") % (s->usrp->get_tx_freq(i)/1e9) << std::endl;
      std::cout << boost::format("Actual TX gain: %f...") % (s->usrp->get_tx_gain(i)) << std::endl;
      std::cout << boost::format("Actual TX bandwidth: %fM...") % (s->usrp->get_tx_bandwidth(i)/1e6) << std::endl;
      std::cout << boost::format("Actual TX antenna: %s...") % (s->usrp->get_tx_antenna(i)) << std::endl;
    }
  }

Raymond Knopp's avatar
 
Raymond Knopp committed
749
  std::cout << boost::format("Device timestamp: %f...") % (s->usrp->get_time_now().get_real_secs()) << std::endl;
Raymond Knopp's avatar
 
Raymond Knopp committed
750 751 752 753

  device->priv = s;
  device->trx_start_func = trx_usrp_start;
  device->trx_write_func = trx_usrp_write;
754 755 756 757 758 759 760
  device->trx_read_func  = trx_usrp_read;
  device->trx_get_stats_func = trx_usrp_get_stats;
  device->trx_reset_stats_func = trx_usrp_reset_stats;
  device->trx_end_func   = trx_usrp_end;
  device->trx_stop_func  = trx_usrp_stop;
  device->trx_set_freq_func = trx_usrp_set_freq;
  device->trx_set_gains_func   = trx_usrp_set_gains;
761
  
762
  s->sample_rate = openair0_cfg[0].sample_rate;
Raymond Knopp's avatar
 
Raymond Knopp committed
763 764 765 766 767 768 769 770 771
  // TODO:
  // init tx_forward_nsamps based usrp_time_offset ex
  if(is_equal(s->sample_rate, (double)30.72e6))
    s->tx_forward_nsamps  = 176;
  if(is_equal(s->sample_rate, (double)15.36e6))
    s->tx_forward_nsamps = 90;
  if(is_equal(s->sample_rate, (double)7.68e6))
    s->tx_forward_nsamps = 50;
  return 0;
772
  }
Raymond Knopp's avatar
 
Raymond Knopp committed
773
}
774
/*@}*/