usrp_lib.cpp 21.8 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

 *******************************************************************************/
knopp's avatar
 
knopp committed
29 30 31 32 33 34 35 36 37 38 39 40

/** usrp_lib.cpp
 *
 * Author: HongliangXU : hong-liang-xu@agilent.com
 */

#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>
knopp's avatar
 
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

knopp's avatar
 
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

knopp's avatar
 
knopp committed
58 59 60 61 62 63 64 65
typedef struct
{

  // --------------------------------
  // variables for USRP configuration
  // --------------------------------
  uhd::usrp::multi_usrp::sptr usrp;
  //uhd::usrp::multi_usrp::sptr rx_usrp;
66
  
knopp's avatar
 
knopp committed
67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104
  //create a send streamer and a receive streamer
  uhd::tx_streamer::sptr tx_stream;
  uhd::rx_streamer::sptr rx_stream;

  uhd::tx_metadata_t tx_md;
  uhd::rx_metadata_t rx_md;

  uhd::time_spec_t tm_spec;
  //setup variables and allocate buffer
  uhd::async_metadata_t async_md;

  double sample_rate;
  // time offset between transmiter timestamp and receiver timestamp;
  double tdiff;
  // use usrp_time_offset to get this value
  int tx_forward_nsamps; //166 for 20Mhz


  // --------------------------------
  // Debug and output control
  // --------------------------------
  int num_underflows;
  int num_overflows;
  int num_seq_errors;

  int64_t tx_count;
  int64_t rx_count;
  openair0_timestamp rx_timestamp;

} usrp_state_t;


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);
knopp's avatar
 
knopp committed
105
  cmd.time_spec = s->usrp->get_time_now() + uhd::time_spec_t(0.05);
knopp's avatar
 
knopp committed
106 107 108
  cmd.stream_now = false; // start at constant delay
  s->rx_stream->issue_stream_cmd(cmd);

knopp's avatar
 
knopp committed
109
  s->tx_md.time_spec = cmd.time_spec + uhd::time_spec_t(1-(double)s->tx_forward_nsamps/s->sample_rate);
knopp's avatar
 
knopp committed
110 111 112 113 114 115 116 117
  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;
118 119

  return 0;
knopp's avatar
 
knopp committed
120 121 122 123 124 125 126 127
}

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
128 129 130 131 132
  //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;
  
knopp's avatar
 
knopp committed
133
}
134

135
static int trx_usrp_write(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps, int cc, int flags)
knopp's avatar
 
knopp committed
136 137 138 139 140 141 142
{
  usrp_state_t *s = (usrp_state_t*)device->priv;
  s->tx_md.time_spec = uhd::time_spec_t::from_ticks(timestamp, s->sample_rate);
  if(flags)
    s->tx_md.has_time_spec = true;
  else
    s->tx_md.has_time_spec = false;
knopp's avatar
knopp committed
143 144 145 146 147 148 149 150

  if (cc>1) {
    std::vector<void *> buff_ptrs;
    for (int i=0;i<cc;i++) buff_ptrs.push_back(buff[i]);
    s->tx_stream->send(buff_ptrs, nsamps, s->tx_md);
  }
  else
    s->tx_stream->send(buff[0], nsamps, s->tx_md);
knopp's avatar
 
knopp committed
151
  s->tx_md.start_of_burst = false;
152 153

  return 0;
knopp's avatar
 
knopp committed
154 155
}

knopp's avatar
 
knopp committed
156
static int trx_usrp_read(openair0_device *device, openair0_timestamp *ptimestamp, void **buff, int nsamps, int cc)
knopp's avatar
 
knopp committed
157
{
158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173
   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__
   __m256i buff_tmp[2][nsamps>>3];
   nsamps2 = (nsamps+7)>>3;
#else
   __m128i buff_tmp[2][nsamps>>2];
   nsamps2 = (nsamps+3)>>2;
#endif
#elif defined(__arm__)
   int16x8_t buff_tmp[2][nsamps>>2];
   nsamps2 = (nsamps+3)>>2;
#endif

knopp's avatar
 
knopp committed
174

175
  if (device->type == USRP_B200_DEV) {  
176
    if (cc>1) {
gauthier's avatar
gauthier committed
177
    // receive multiple channels (e.g. RF A and RF B)
178
      std::vector<void *> buff_ptrs;
179
 
180 181 182
      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 {
gauthier's avatar
gauthier committed
183
    // receive a single channel (e.g. from connector RF A)
184 185 186
      samples_received = s->rx_stream->recv(buff_tmp[0], nsamps, s->rx_md);
    }
   
187
  // bring RX data into 12 LSBs for softmodem RX
188 189
    for (int i=0;i<cc;i++) {
      for (int j=0; j<nsamps2; j++) {      
190 191
#if defined(__x86_64__) || defined(__i386__)
#ifdef __AVX2__
192
        ((__m256i *)buff[i])[j] = _mm256_srai_epi16(buff_tmp[i][j],4);
193
#else
194
        ((__m128i *)buff[i])[j] = _mm_srai_epi16(buff_tmp[i][j],4);
195 196
#endif
#elif defined(__arm__)
197
        ((int16x8_t*)buff[i])[j] = vshrq_n_s16(buff_tmp[i][j],4);
198
#endif
199
      }
200
    }
201
  } else if (device->type == USRP_X300_DEV) {
202 203 204 205 206 207 208 209 210
    if (cc>1) {
    // 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);
navid's avatar
navid committed
211
    }
212
  }
213

knopp's avatar
 
knopp committed
214 215 216 217
  if (samples_received < nsamps) {
    printf("[recv] received %d samples out of %d\n",samples_received,nsamps);
    
  }
navid's avatar
navid committed
218

knopp's avatar
 
knopp committed
219 220 221 222 223 224 225 226 227 228 229 230 231 232 233
  //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;
  }
knopp's avatar
 
knopp committed
234 235 236
  s->rx_count += nsamps;
  s->rx_timestamp = s->rx_md.time_spec.to_ticks(s->sample_rate);
  *ptimestamp = s->rx_timestamp;
navid's avatar
navid committed
237

knopp's avatar
 
knopp committed
238 239 240
  return samples_received;
}

knopp's avatar
 
knopp committed
241 242 243 244 245 246 247 248
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);
} 

knopp's avatar
 
knopp committed
249 250 251 252
static bool is_equal(double a, double b)
{
  return std::fabs(a-b) < std::numeric_limits<double>::epsilon();
}
knopp's avatar
 
knopp committed
253

254
int trx_usrp_set_freq(openair0_device* device, openair0_config_t *openair0_cfg, int dummy) {
knopp's avatar
 
knopp committed
255 256 257 258 259 260 261 262 263 264

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

  s->usrp->set_tx_freq(openair0_cfg[0].tx_freq[0]);
  s->usrp->set_rx_freq(openair0_cfg[0].rx_freq[0]);

  return(0);
  
}

knopp's avatar
 
knopp committed
265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281
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);
  
}

282
int trx_usrp_set_gains(openair0_device* device, 
283
		       openair0_config_t *openair0_cfg) {
knopp's avatar
 
knopp committed
284 285 286 287

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

  s->usrp->set_tx_gain(openair0_cfg[0].tx_gain[0]);
288 289 290 291 292 293 294 295 296
  ::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]);
297
  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());
298

knopp's avatar
 
knopp committed
299 300
  return(0);
}
301

302
int trx_usrp_stop(int card) {
303 304
  return(0);
}
305

306

307
rx_gain_calib_table_t calib_table_b210[] = {
Raymond Knopp's avatar
Raymond Knopp committed
308 309 310 311 312
  {3500000000.0,44.0},
  {2660000000.0,49.0},
  {2300000000.0,50.0},
  {1880000000.0,53.0},
  {816000000.0,58.0},
313 314
  {-1,0}};

315 316 317 318 319 320 321 322
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},
  {-1,0}};

323 324
rx_gain_calib_table_t calib_table_x310[] = {
  {3500000000.0,77.0},
325
  {2660000000.0,81.0},
326 327
  {2300000000.0,81.0},
  {1880000000.0,82.0},
328
  {816000000.0,85.0},
329 330
  {-1,0}};

331
void set_rx_gain_offset(openair0_config_t *openair0_cfg, int chain_index,int bw_gain_adjust) {
332 333 334

  int i=0;
  // loop through calibration table to find best adjustment factor for RX frequency
335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360
  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;
    }
  }
361 362
  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);
363
    printf("cal %d: freq %f, offset %f, diff %f\n",
364 365 366
	   i,
	   openair0_cfg->rx_gain_calib_table[i].freq,
	   openair0_cfg->rx_gain_calib_table[i].offset,diff);
367 368
    if (min_diff > diff) {
      min_diff = diff;
369
      openair0_cfg->rx_gain_offset[chain_index] = openair0_cfg->rx_gain_calib_table[i].offset+gain_adj;
370 371 372 373 374 375
    }
    i++;
  }
  
}

376 377

int trx_usrp_get_stats(openair0_device* device) {
378

379 380 381
  return(0);

}
382
int trx_usrp_reset_stats(openair0_device* device) {
383 384 385 386

  return(0);

}
387

388

389
extern "C" {
390
  int device_init(openair0_device* device, openair0_config_t *openair0_cfg) {
391
    
392 393 394 395 396
    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
knopp's avatar
knopp committed
397

398 399
  std::string args = "type=b200";

knopp's avatar
 
knopp committed
400

knopp's avatar
 
knopp committed
401
  uhd::device_addrs_t device_adds = uhd::device::find(args);
knopp's avatar
 
knopp committed
402
  size_t i;
403 404 405 406 407
  
  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);
knopp's avatar
 
knopp committed
408

409
  printf("Checking for USRPs : UHD %s (%d.%d.%d)\n",uhd::get_version_string().c_str(),vers,subvers,subsubvers);
410
  
knopp's avatar
 
knopp committed
411 412
  if(device_adds.size() == 0)
  {
413
    double usrp_master_clock = 184.32e6;
414

415 416 417 418 419 420
    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);
421

422 423 424 425 426
    if(device_adds.size() == 0)
    {
      std::cerr<<"No USRP Device Found. " << std::endl;
      free(s);
      return -1;
knopp's avatar
knopp committed
427

428
    }
knopp's avatar
knopp committed
429

430

431
    printf("Found USRP X300\n");
432 433 434
    s->usrp = uhd::usrp::multi_usrp::make(args);
    //  s->usrp->set_rx_subdev_spec(rx_subdev);
    //  s->usrp->set_tx_subdev_spec(tx_subdev);
435

436 437 438
    // lock mboard clocks
    s->usrp->set_clock_source("internal");
    
439
    //Setting device type to USRP X300/X310 
440
    device->type=USRP_X300_DEV;
441

442 443 444
    // 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);
445 446

    openair0_cfg[0].rx_gain_calib_table = calib_table_x310;
447
    
448 449
    switch ((int)openair0_cfg[0].sample_rate) {
    case 30720000:
450 451 452
            // from usrp_time_offset
      openair0_cfg[0].samples_per_packet    = 2048;
      openair0_cfg[0].tx_sample_advance     = 15;
453 454
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
455
      openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
456
      break;
457
    case 15360000:
458 459
      openair0_cfg[0].samples_per_packet    = 2048;
      openair0_cfg[0].tx_sample_advance     = 45;
460 461
      openair0_cfg[0].tx_bw                 = 10e6;
      openair0_cfg[0].rx_bw                 = 10e6;
462
      openair0_cfg[0].tx_scheduling_advance = 5*openair0_cfg[0].samples_per_packet;
463
      break;
464
    case 7680000:
465 466
      openair0_cfg[0].samples_per_packet    = 1024;
      openair0_cfg[0].tx_sample_advance     = 50;
467 468
      openair0_cfg[0].tx_bw                 = 5e6;
      openair0_cfg[0].rx_bw                 = 5e6;
469
      openair0_cfg[0].tx_scheduling_advance = 5*openair0_cfg[0].samples_per_packet;
470
      break;
471
    case 1920000:
472 473
      openair0_cfg[0].samples_per_packet    = 256;
      openair0_cfg[0].tx_sample_advance     = 50;
474 475
      openair0_cfg[0].tx_bw                 = 1.25e6;
      openair0_cfg[0].rx_bw                 = 1.25e6;
476
      openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
477 478 479 480 481 482 483
      break;
    default:
      printf("Error: unknown sampling rate %f\n",openair0_cfg[0].sample_rate);
      exit(-1);
      break;
    }

484 485
  } else {
    printf("Found USRP B200");
486
    args += ",num_recv_frames=256" ; 
487 488 489 490
    s->usrp = uhd::usrp::multi_usrp::make(args);

    //  s->usrp->set_rx_subdev_spec(rx_subdev);
    //  s->usrp->set_tx_subdev_spec(tx_subdev);
491 492 493 494
    
    // do not explicitly set the clock to "internal", because this will disable the gpsdo
    //    // lock mboard clocks
    //    s->usrp->set_clock_source("internal");
495
    // set master clock rate and sample rate for tx & rx for streaming
knopp's avatar
knopp committed
496

497
    device->type = USRP_B200_DEV;
498

499

500 501 502 503 504 505 506 507
    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;
    }
508 509
    switch ((int)openair0_cfg[0].sample_rate) {
    case 30720000:
510
      s->usrp->set_master_clock_rate(30.72e6);
511
            // from usrp_time_offset
Raymond Knopp's avatar
Raymond Knopp committed
512
      openair0_cfg[0].samples_per_packet    = 4096;
513
      openair0_cfg[0].tx_sample_advance     = 115;
514 515
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
516
      openair0_cfg[0].tx_scheduling_advance = 11*openair0_cfg[0].samples_per_packet;
517
      break;
518 519 520 521
    case 23040000:
      s->usrp->set_master_clock_rate(46.08e6);
      openair0_cfg[0].samples_per_packet    = 2048;
      openair0_cfg[0].tx_sample_advance     = 113;
522 523
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
524 525
      openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
      break;
526
    case 15360000:
527
      s->usrp->set_master_clock_rate(30.72e6);
528
      openair0_cfg[0].samples_per_packet    = 2048;
529
      openair0_cfg[0].tx_sample_advance     = 113;
530 531
      openair0_cfg[0].tx_bw                 = 10e6;
      openair0_cfg[0].rx_bw                 = 10e6;
532
      openair0_cfg[0].tx_scheduling_advance = 5*openair0_cfg[0].samples_per_packet;
533
      break;
534
    case 7680000:
535
      s->usrp->set_master_clock_rate(30.72e6);
536
      openair0_cfg[0].samples_per_packet    = 1024;
gauthier's avatar
gauthier committed
537
      openair0_cfg[0].tx_sample_advance     = 70;//103;
538 539
      openair0_cfg[0].tx_bw                 = 5e6;
      openair0_cfg[0].rx_bw                 = 5e6;
540
      openair0_cfg[0].tx_scheduling_advance = 5*openair0_cfg[0].samples_per_packet;
541
      break;
542
    case 1920000:
543
      s->usrp->set_master_clock_rate(30.72e6);
544 545
      openair0_cfg[0].samples_per_packet    = 256;
      openair0_cfg[0].tx_sample_advance     = 40;
546 547
      openair0_cfg[0].tx_bw                 = 1.25e6;
      openair0_cfg[0].rx_bw                 = 1.25e6;
548
      openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
549 550 551 552 553 554 555
      break;
    default:
      printf("Error: unknown sampling rate %f\n",openair0_cfg[0].sample_rate);
      exit(-1);
      break;
    }
  }
knopp's avatar
knopp committed
556

557 558 559 560 561 562
  /* device specific */
  openair0_cfg[0].iq_txshift = 5;
  openair0_cfg[0].iq_rxrescale = 15;
  openair0_cfg[0].txlaunch_wait = 1;
  openair0_cfg[0].txlaunch_wait_slotcount = 1;
  
knopp's avatar
 
knopp committed
563
  for(i=0;i<s->usrp->get_rx_num_channels();i++) {
knopp's avatar
 
knopp committed
564
    if (i<openair0_cfg[0].rx_num_channels) {
knopp's avatar
knopp committed
565
      s->usrp->set_rx_rate(openair0_cfg[0].sample_rate,i);
kortke's avatar
kortke committed
566
      s->usrp->set_rx_bandwidth(openair0_cfg[0].rx_bw,i);
gauthier's avatar
gauthier committed
567
      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);
knopp's avatar
knopp committed
568
      s->usrp->set_rx_freq(openair0_cfg[0].rx_freq[i],i);
569
      set_rx_gain_offset(&openair0_cfg[0],i,bw_gain_adjust);
570 571 572 573 574 575 576 577 578 579 580 581

      ::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());
knopp's avatar
 
knopp committed
582 583
    }
  }
knopp's avatar
 
knopp committed
584
  for(i=0;i<s->usrp->get_tx_num_channels();i++) {
knopp's avatar
 
knopp committed
585
    if (i<openair0_cfg[0].tx_num_channels) {
knopp's avatar
knopp committed
586 587
      s->usrp->set_tx_rate(openair0_cfg[0].sample_rate,i);
      s->usrp->set_tx_bandwidth(openair0_cfg[0].tx_bw,i);
gauthier's avatar
gauthier committed
588
      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);
knopp's avatar
knopp committed
589 590
      s->usrp->set_tx_freq(openair0_cfg[0].tx_freq[i],i);
      s->usrp->set_tx_gain(openair0_cfg[0].tx_gain[i],i);
knopp's avatar
 
knopp committed
591 592
    }
  }
593 594


knopp's avatar
 
knopp committed
595 596
  // display USRP settings
  std::cout << boost::format("Actual master clock: %fMHz...") % (s->usrp->get_master_clock_rate()/1e6) << std::endl;
597

knopp's avatar
 
knopp committed
598
  // create tx & rx streamer
knopp's avatar
 
knopp committed
599
  uhd::stream_args_t stream_args_rx("sc16", "sc16");
knopp's avatar
 
knopp committed
600
  //stream_args_rx.args["spp"] = str(boost::format("%d") % 2048);//(openair0_cfg[0].rx_num_channels*openair0_cfg[0].samples_per_packet));
knopp's avatar
 
knopp committed
601
  for (i = 0; i<openair0_cfg[0].rx_num_channels; i++)
knopp's avatar
 
knopp committed
602 603 604 605
    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();
606

knopp's avatar
 
knopp committed
607 608
  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));
knopp's avatar
 
knopp committed
609
  for (i = 0; i<openair0_cfg[0].tx_num_channels; i++)
610
      stream_args_tx.channels.push_back(i);
knopp's avatar
 
knopp committed
611
  s->tx_stream = s->usrp->get_tx_stream(stream_args_tx);
knopp's avatar
 
knopp committed
612
  std::cout << boost::format("tx_max_num_samps %u") % (s->tx_stream->get_max_num_samps()) << std::endl;
613

knopp's avatar
 
knopp committed
614 615

  s->usrp->set_time_now(uhd::time_spec_t(0.0));
616 617
 

knopp's avatar
knopp committed
618 619
  for (i=0;i<openair0_cfg[0].rx_num_channels;i++) {
    if (i<openair0_cfg[0].rx_num_channels) {
knopp's avatar
 
knopp committed
620
      printf("RX Channel %lu\n",i);
knopp's avatar
knopp committed
621 622 623 624 625 626 627
      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;
    }
  }
628

knopp's avatar
knopp committed
629
  for (i=0;i<openair0_cfg[0].tx_num_channels;i++) {
630

knopp's avatar
knopp committed
631
    if (i<openair0_cfg[0].tx_num_channels) { 
knopp's avatar
 
knopp committed
632
      printf("TX Channel %lu\n",i);
knopp's avatar
knopp committed
633 634 635 636 637 638 639
      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;
    }
  }
640

knopp's avatar
 
knopp committed
641
  std::cout << boost::format("Device timestamp: %f...") % (s->usrp->get_time_now().get_real_secs()) << std::endl;
knopp's avatar
 
knopp committed
642 643 644 645

  device->priv = s;
  device->trx_start_func = trx_usrp_start;
  device->trx_write_func = trx_usrp_write;
646 647 648 649 650 651 652
  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;
653
  
knopp's avatar
knopp committed
654
  s->sample_rate = openair0_cfg[0].sample_rate;
knopp's avatar
 
knopp committed
655 656
  // TODO:
  // init tx_forward_nsamps based usrp_time_offset ex
657
  if(is_equal(s->sample_rate, (double)30.72e6))
knopp's avatar
 
knopp committed
658
    s->tx_forward_nsamps  = 176;
659
  if(is_equal(s->sample_rate, (double)15.36e6))
knopp's avatar
 
knopp committed
660 661
    s->tx_forward_nsamps = 90;
  if(is_equal(s->sample_rate, (double)7.68e6))
662
    s->tx_forward_nsamps = 50;
knopp's avatar
 
knopp committed
663
  return 0;
664
  }
knopp's avatar
 
knopp committed
665
}