usrp_lib.cpp 26 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

/** usrp_lib.cpp
 *
32
 * \author: HongliangXU : hong-liang-xu@agilent.com
knopp's avatar
 
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>
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

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

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

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

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

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

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

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

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

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

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


  // --------------------------------
  // Debug and output control
  // --------------------------------
108
  //! Number of underflows
knopp's avatar
 
knopp committed
109
  int num_underflows;
110
  //! Number of overflows
knopp's avatar
 
knopp committed
111
  int num_overflows;
112
113
  
  //! Number of sequential errors
knopp's avatar
 
knopp committed
114
  int num_seq_errors;
115
  //! tx count
knopp's avatar
 
knopp committed
116
  int64_t tx_count;
117
  //! rx count
knopp's avatar
 
knopp committed
118
  int64_t rx_count;
119
  //! timestamp of RX packet
knopp's avatar
 
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
*/
knopp's avatar
 
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);
knopp's avatar
   
knopp committed
133
  cmd.time_spec = s->usrp->get_time_now() + uhd::time_spec_t(0.05);
knopp's avatar
 
knopp committed
134
135
136
  cmd.stream_now = false; // start at constant delay
  s->rx_stream->issue_stream_cmd(cmd);

knopp's avatar
   
knopp committed
137
  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
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;
knopp's avatar
 
knopp committed
148
}
149
150
151
/*! \brief Terminate operation of the USRP transceiver -- free all associated resources 
 * \param device the hardware to use
 */
knopp's avatar
 
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;
  
knopp's avatar
 
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)
knopp's avatar
 
knopp committed
174
175
176
177
178
179
180
{
  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
181
182
183
184
185
186
187
188

  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
189
  s->tx_md.start_of_burst = false;
190
191

  return 0;
knopp's avatar
 
knopp committed
192
193
}

194
195
196
197
198
199
200
201
202
203
204
/*! \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
*/
knopp's avatar
   
knopp committed
205
static int trx_usrp_read(openair0_device *device, openair0_timestamp *ptimestamp, void **buff, int nsamps, int cc)
knopp's avatar
 
knopp committed
206
{
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
   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
223

224
  if (device->type == USRP_B200_DEV) {  
225
    if (cc>1) {
gauthier's avatar
gauthier committed
226
    // receive multiple channels (e.g. RF A and RF B)
227
      std::vector<void *> buff_ptrs;
228
 
229
230
231
      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
232
    // receive a single channel (e.g. from connector RF A)
233
234
235
      samples_received = s->rx_stream->recv(buff_tmp[0], nsamps, s->rx_md);
    }
   
236
  // bring RX data into 12 LSBs for softmodem RX
237
238
    for (int i=0;i<cc;i++) {
      for (int j=0; j<nsamps2; j++) {      
239
240
#if defined(__x86_64__) || defined(__i386__)
#ifdef __AVX2__
241
        ((__m256i *)buff[i])[j] = _mm256_srai_epi16(buff_tmp[i][j],4);
242
#else
243
        ((__m128i *)buff[i])[j] = _mm_srai_epi16(buff_tmp[i][j],4);
244
245
#endif
#elif defined(__arm__)
246
        ((int16x8_t*)buff[i])[j] = vshrq_n_s16(buff_tmp[i][j],4);
247
#endif
248
      }
249
    }
250
  } else if (device->type == USRP_X300_DEV) {
251
252
253
254
255
256
257
258
259
    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
260
    }
261
  }
262

knopp's avatar
   
knopp committed
263
264
265
266
  if (samples_received < nsamps) {
    printf("[recv] received %d samples out of %d\n",samples_received,nsamps);
    
  }
navid's avatar
navid committed
267

knopp's avatar
   
knopp committed
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
  //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
283
284
285
  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
286

knopp's avatar
 
knopp committed
287
288
289
  return samples_received;
}

290
291
292
/*! \brief Get current timestamp of USRP
 * \param device the hardware to use
*/
knopp's avatar
   
knopp committed
293
294
295
296
297
298
299
300
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);
} 

301
302
303
304
/*! \brief Compares two variables within precision
 * \param a first variable
 * \param b second variable
*/
knopp's avatar
 
knopp committed
305
306
307
308
static bool is_equal(double a, double b)
{
  return std::fabs(a-b) < std::numeric_limits<double>::epsilon();
}
knopp's avatar
   
knopp committed
309

310
311
312
313
314
315
/*! \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 
 */
316
int trx_usrp_set_freq(openair0_device* device, openair0_config_t *openair0_cfg, int dummy) {
knopp's avatar
   
knopp committed
317
318
319

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

320
  printf("Setting USRP TX Freq %f, RX Freq %f\n",openair0_cfg[0].tx_freq[0],openair0_cfg[0].rx_freq[0]);
knopp's avatar
   
knopp committed
321
322
323
324
325
326
327
  s->usrp->set_tx_freq(openair0_cfg[0].tx_freq[0]);
  s->usrp->set_rx_freq(openair0_cfg[0].rx_freq[0]);

  return(0);
  
}

328
329
330
331
332
/*! \brief Set RX frequencies 
 * \param device the hardware to use
 * \param openair0_cfg RF frontend parameters set by application
 * \returns 0 in success 
 */
knopp's avatar
   
knopp committed
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
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);
  
}

350
351
352
353
354
/*! \brief Set Gains (TX/RX)
 * \param device the hardware to use
 * \param openair0_cfg RF frontend parameters set by application
 * \returns 0 in success 
 */
355
int trx_usrp_set_gains(openair0_device* device, 
356
		       openair0_config_t *openair0_cfg) {
knopp's avatar
   
knopp committed
357
358
359
360

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

  s->usrp->set_tx_gain(openair0_cfg[0].tx_gain[0]);
361
362
363
364
365
366
367
368
369
  ::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]);
370
  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());
371

knopp's avatar
   
knopp committed
372
373
  return(0);
}
374

375
376
377
/*! \brief Stop USRP
 * \param card refers to the hardware index to use
 */
378
int trx_usrp_stop(int card) {
379
380
  return(0);
}
381

382
/*! \brief USRPB210 RX calibration table */
383
rx_gain_calib_table_t calib_table_b210[] = {
Raymond Knopp's avatar
Raymond Knopp committed
384
385
386
387
388
  {3500000000.0,44.0},
  {2660000000.0,49.0},
  {2300000000.0,50.0},
  {1880000000.0,53.0},
  {816000000.0,58.0},
389
390
  {-1,0}};

391
/*! \brief USRPB210 RX calibration table */
392
393
394
395
396
397
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},
398
399
  {-1,0}};

400
/*! \brief USRPx310 RX calibration table */
401
402
rx_gain_calib_table_t calib_table_x310[] = {
  {3500000000.0,77.0},
403
  {2660000000.0,81.0},
404
405
  {2300000000.0,81.0},
  {1880000000.0,82.0},
406
  {816000000.0,85.0},
407
408
  {-1,0}};

409
410
411
412
413
/*! \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 
 */
414
void set_rx_gain_offset(openair0_config_t *openair0_cfg, int chain_index,int bw_gain_adjust) {
415
416
417

  int i=0;
  // loop through calibration table to find best adjustment factor for RX frequency
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
  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;
    }
  }
444
445
  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);
446
    printf("cal %d: freq %f, offset %f, diff %f\n",
447
448
449
	   i,
	   openair0_cfg->rx_gain_calib_table[i].freq,
	   openair0_cfg->rx_gain_calib_table[i].offset,diff);
450
451
    if (min_diff > diff) {
      min_diff = diff;
452
      openair0_cfg->rx_gain_offset[chain_index] = openair0_cfg->rx_gain_calib_table[i].offset+gain_adj;
453
454
455
456
457
458
    }
    i++;
  }
  
}

459
460
461
462
/*! \brief print the USRP statistics  
* \param device the hardware to use
* \returns  0 on success
*/
463
int trx_usrp_get_stats(openair0_device* device) {
464

465
466
467
  return(0);

}
468
469
470
471
472

/*! \brief Reset the USRP statistics  
* \param device the hardware to use
* \returns  0 on success
*/
473
int trx_usrp_reset_stats(openair0_device* device) {
474
475
476
477

  return(0);

}
478

479

480

481
extern "C" {
482
483
484
485
/*! \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
*/
486
  int device_init(openair0_device* device, openair0_config_t *openair0_cfg) {
487
    
488
489
490
491
492
    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
493

knopp's avatar
   
knopp committed
494

knopp's avatar
   
knopp committed
495
  std::string args = "type=b200";
knopp's avatar
knopp committed
496
497


knopp's avatar
 
knopp committed
498
  uhd::device_addrs_t device_adds = uhd::device::find(args);
knopp's avatar
   
knopp committed
499
  size_t i;
500
501
502
503
504
  
  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
505

506
  printf("Checking for USRPs : UHD %s (%d.%d.%d)\n",uhd::get_version_string().c_str(),vers,subvers,subsubvers);
507
  
knopp's avatar
 
knopp committed
508
509
  if(device_adds.size() == 0)
  {
510
511
512
513
514
515
516
517
    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);
knopp's avatar
 
knopp committed
518

519
520
521
522
523
    if(device_adds.size() == 0)
    {
      std::cerr<<"No USRP Device Found. " << std::endl;
      free(s);
      return -1;
knopp's avatar
knopp committed
524

525
    }
knopp's avatar
knopp committed
526

527

528
529
530
531
532
533
534
535
    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");
    
536
    //Setting device type to USRP X300/X310 
537
    device->type=USRP_X300_DEV;
538

539
540
541
    // 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);
542
543

    openair0_cfg[0].rx_gain_calib_table = calib_table_x310;
544
    
545
546
    switch ((int)openair0_cfg[0].sample_rate) {
    case 30720000:
547
548
549
            // from usrp_time_offset
      openair0_cfg[0].samples_per_packet    = 2048;
      openair0_cfg[0].tx_sample_advance     = 15;
550
551
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
552
      openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
553
      break;
554
    case 15360000:
555
556
      openair0_cfg[0].samples_per_packet    = 2048;
      openair0_cfg[0].tx_sample_advance     = 45;
557
558
      openair0_cfg[0].tx_bw                 = 10e6;
      openair0_cfg[0].rx_bw                 = 10e6;
559
      openair0_cfg[0].tx_scheduling_advance = 5*openair0_cfg[0].samples_per_packet;
560
      break;
561
    case 7680000:
562
563
      openair0_cfg[0].samples_per_packet    = 1024;
      openair0_cfg[0].tx_sample_advance     = 50;
564
565
      openair0_cfg[0].tx_bw                 = 5e6;
      openair0_cfg[0].rx_bw                 = 5e6;
566
      openair0_cfg[0].tx_scheduling_advance = 5*openair0_cfg[0].samples_per_packet;
567
      break;
568
    case 1920000:
569
570
      openair0_cfg[0].samples_per_packet    = 256;
      openair0_cfg[0].tx_sample_advance     = 50;
571
572
      openair0_cfg[0].tx_bw                 = 1.25e6;
      openair0_cfg[0].rx_bw                 = 1.25e6;
573
      openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
574
575
576
577
578
579
580
      break;
    default:
      printf("Error: unknown sampling rate %f\n",openair0_cfg[0].sample_rate);
      exit(-1);
      break;
    }

581
582
  } else {
    printf("Found USRP B200");
583
    args += ",num_recv_frames=256" ; 
584
585
586
587
    s->usrp = uhd::usrp::multi_usrp::make(args);

    //  s->usrp->set_rx_subdev_spec(rx_subdev);
    //  s->usrp->set_tx_subdev_spec(tx_subdev);
588
589
590
591
    
    // do not explicitly set the clock to "internal", because this will disable the gpsdo
    //    // lock mboard clocks
    //    s->usrp->set_clock_source("internal");
592
    // set master clock rate and sample rate for tx & rx for streaming
593

594
    device->type = USRP_B200_DEV;
595

knopp's avatar
knopp committed
596

597
598
599
600
601
602
603
604
    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;
    }
605

606
607
    switch ((int)openair0_cfg[0].sample_rate) {
    case 30720000:
608
      s->usrp->set_master_clock_rate(30.72e6);
Raymond Knopp's avatar
Raymond Knopp committed
609
      openair0_cfg[0].samples_per_packet    = 4096;
610
      openair0_cfg[0].tx_sample_advance     = 115;
611
612
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
613
      openair0_cfg[0].tx_scheduling_advance = 11*openair0_cfg[0].samples_per_packet;
614
      break;
615
    case 23040000:
616
      s->usrp->set_master_clock_rate(23.04e6); //to be checked
617
618
      openair0_cfg[0].samples_per_packet    = 2048;
      openair0_cfg[0].tx_sample_advance     = 113;
619
620
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
621
622
      openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
      break;
623
    case 15360000:
624
      s->usrp->set_master_clock_rate(30.72e06);
625
      openair0_cfg[0].samples_per_packet    = 2048;
626
      openair0_cfg[0].tx_sample_advance     = 103; 
627
628
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
629
      openair0_cfg[0].tx_scheduling_advance = 10240;
630
      break;
631
    case 7680000:
Rohit Gupta's avatar
Rohit Gupta committed
632
      s->usrp->set_master_clock_rate(30.72e6);
633
      openair0_cfg[0].samples_per_packet    = 1024;
634
      openair0_cfg[0].tx_sample_advance     = 80;
635
636
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
637
      openair0_cfg[0].tx_scheduling_advance = 5*openair0_cfg[0].samples_per_packet;
638
      break;
639
    case 1920000:
640
      s->usrp->set_master_clock_rate(7.68e6);
641
642
      openair0_cfg[0].samples_per_packet    = 256;
      openair0_cfg[0].tx_sample_advance     = 40;
643
644
      openair0_cfg[0].tx_bw                 = 20e6;
      openair0_cfg[0].rx_bw                 = 20e6;
645
      openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
646
647
648
649
650
651
652
      break;
    default:
      printf("Error: unknown sampling rate %f\n",openair0_cfg[0].sample_rate);
      exit(-1);
      break;
    }
  }
knopp's avatar
knopp committed
653

654
  /* device specific */
655
656
657
658
  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
  openair0_cfg[0].iq_txshift = 4;//shift
  openair0_cfg[0].iq_rxrescale = 15;//rescale iqs
659
  
knopp's avatar
   
knopp committed
660
  for(i=0;i<s->usrp->get_rx_num_channels();i++) {
knopp's avatar
   
knopp committed
661
    if (i<openair0_cfg[0].rx_num_channels) {
knopp's avatar
knopp committed
662
      s->usrp->set_rx_rate(openair0_cfg[0].sample_rate,i);
663
664
      //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);
knopp's avatar
knopp committed
665
      s->usrp->set_rx_freq(openair0_cfg[0].rx_freq[i],i);
666
      set_rx_gain_offset(&openair0_cfg[0],i,bw_gain_adjust);
667
668
669
670
671
672
673
674
675
676
677
678

      ::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
679
680
    }
  }
knopp's avatar
   
knopp committed
681
  for(i=0;i<s->usrp->get_tx_num_channels();i++) {
knopp's avatar
   
knopp committed
682
    if (i<openair0_cfg[0].tx_num_channels) {
knopp's avatar
knopp committed
683
      s->usrp->set_tx_rate(openair0_cfg[0].sample_rate,i);
684
685
      //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);
knopp's avatar
knopp committed
686
687
      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
688
689
    }
  }
knopp's avatar
knopp committed
690
691


knopp's avatar
   
knopp committed
692
693
  // display USRP settings
  std::cout << boost::format("Actual master clock: %fMHz...") % (s->usrp->get_master_clock_rate()/1e6) << std::endl;
694
695
  
  sleep(1);
knopp's avatar
 
knopp committed
696
697

  // create tx & rx streamer
knopp's avatar
   
knopp committed
698
  uhd::stream_args_t stream_args_rx("sc16", "sc16");
knopp's avatar
   
knopp committed
699
  //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
700
  for (i = 0; i<openair0_cfg[0].rx_num_channels; i++)
knopp's avatar
   
knopp committed
701
702
703
704
705
706
707
    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));
knopp's avatar
   
knopp committed
708
  for (i = 0; i<openair0_cfg[0].tx_num_channels; i++)
knopp's avatar
   
knopp committed
709
710
      stream_args_tx.channels.push_back(i);
  s->tx_stream = s->usrp->get_tx_stream(stream_args_tx);
knopp's avatar
   
knopp committed
711
712
  std::cout << boost::format("tx_max_num_samps %u") % (s->tx_stream->get_max_num_samps()) << std::endl;

knopp's avatar
 
knopp committed
713

714
715
716
717
718
 /* 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
719
720
721
722
723
    }
  }
  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);
724
725
726
727
      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
728
  s->usrp->set_time_now(uhd::time_spec_t(0.0));
729
 
730

knopp's avatar
knopp committed
731
732
  for (i=0;i<openair0_cfg[0].rx_num_channels;i++) {
    if (i<openair0_cfg[0].rx_num_channels) {
knopp's avatar
   
knopp committed
733
      printf("RX Channel %lu\n",i);
knopp's avatar
knopp committed
734
735
736
737
738
739
740
741
742
743
744
      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) { 
knopp's avatar
   
knopp committed
745
      printf("TX Channel %lu\n",i);
knopp's avatar
knopp committed
746
747
748
749
750
751
752
753
      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;
    }
  }

knopp's avatar
   
knopp committed
754
  std::cout << boost::format("Device timestamp: %f...") % (s->usrp->get_time_now().get_real_secs()) << std::endl;
knopp's avatar
 
knopp committed
755
756
757
758

  device->priv = s;
  device->trx_start_func = trx_usrp_start;
  device->trx_write_func = trx_usrp_write;
759
760
761
762
763
764
765
  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;
766
  
knopp's avatar
knopp committed
767
  s->sample_rate = openair0_cfg[0].sample_rate;
knopp's avatar
 
knopp committed
768
769
770
771
772
773
774
775
776
  // 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;
777
  }
knopp's avatar
 
knopp committed
778
}
779
/*@}*/