1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
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
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
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
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
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
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/** usrp_lib.cpp
*
* \author: HongliangXU : hong-liang-xu@agilent.com
*/
#define _LARGEFILE_SOURCE
#define _FILE_OFFSET_BITS 64
#include <string.h>
#include <pthread.h>
#include <unistd.h>
#include <stdio.h>
#include <uhd/version.hpp>
#if UHD_VERSION < 3110000
#include <uhd/utils/thread_priority.hpp>
#else
#include <uhd/utils/thread.hpp>
#endif
#include <uhd/usrp/multi_usrp.hpp>
#include <uhd/version.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/thread.hpp>
#include <boost/format.hpp>
#include <iostream>
#include <complex>
#include <fstream>
#include <cmath>
#include <time.h>
#include "common/utils/LOG/log.h"
#include "common_lib.h"
#include "assertions.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
#include <sys/resource.h>
#include "openair1/PHY/sse_intrin.h"
/** @addtogroup _USRP_PHY_RF_INTERFACE_
* @{
*/
extern int usrp_tx_thread;
typedef struct {
// --------------------------------
// variables for USRP configuration
// --------------------------------
//! USRP device pointer
uhd::usrp::multi_usrp::sptr usrp;
//create a send streamer and a receive streamer
//! USRP TX Stream
uhd::tx_streamer::sptr tx_stream;
//! USRP RX Stream
uhd::rx_streamer::sptr rx_stream;
//! USRP TX Metadata
uhd::tx_metadata_t tx_md;
//! USRP RX Metadata
uhd::rx_metadata_t rx_md;
//! Sampling rate
double sample_rate;
//! TX forward samples. We use usrp_time_offset to get this value
int tx_forward_nsamps; //166 for 20Mhz
//! gpio bank to use
char *gpio_bank;
// --------------------------------
// Debug and output control
// --------------------------------
int num_underflows;
int num_overflows;
int num_seq_errors;
int64_t tx_count;
int64_t rx_count;
int wait_for_first_pps;
int use_gps;
//int first_tx;
//int first_rx;
//! timestamp of RX packet
openair0_timestamp rx_timestamp;
} usrp_state_t;
//void print_notes(void)
//{
// Helpful notes
// std::cout << boost::format("**************************************Helpful Notes on Clock/PPS Selection**************************************\n");
// std::cout << boost::format("As you can see, the default 10 MHz Reference and 1 PPS signals are now from the GPSDO.\n");
// std::cout << boost::format("If you would like to use the internal reference(TCXO) in other applications, you must configure that explicitly.\n");
// std::cout << boost::format("You can no longer select the external SMAs for 10 MHz or 1 PPS signaling.\n");
// std::cout << boost::format("****************************************************************************************************************\n");
//}
int check_ref_locked(usrp_state_t *s,size_t mboard) {
std::vector<std::string> sensor_names = s->usrp->get_mboard_sensor_names(mboard);
bool ref_locked = false;
if(std::find(sensor_names.begin(), sensor_names.end(), "ref_locked") != sensor_names.end()) {
std::cout << "Waiting for reference lock..." << std::flush;
for (int i = 0; i < 30 and not ref_locked; i++) {
ref_locked = s->usrp->get_mboard_sensor("ref_locked", mboard).to_bool();
if (not ref_locked) {
std::cout << "." << std::flush;
boost::this_thread::sleep(boost::posix_time::seconds(1));
}
}
if(ref_locked) {
std::cout << "LOCKED" << std::endl;
} else {
std::cout << "FAILED" << std::endl;
}
} else {
std::cout << boost::format("ref_locked sensor not present on this board.\n");
}
return ref_locked;
}
static int sync_to_gps(openair0_device *device) {
//uhd::set_thread_priority_safe();
//std::string args;
//Set up program options
//po::options_description desc("Allowed options");
//desc.add_options()
//("help", "help message")
//("args", po::value<std::string>(&args)->default_value(""), "USRP device arguments")
//;
//po::variables_map vm;
//po::store(po::parse_command_line(argc, argv, desc), vm);
//po::notify(vm);
//Print the help message
//if (vm.count("help"))
//{
// std::cout << boost::format("Synchronize USRP to GPS %s") % desc << std::endl;
// return EXIT_FAILURE;
//}
//Create a USRP device
//std::cout << boost::format("\nCreating the USRP device with: %s...\n") % args;
//uhd::usrp::multi_usrp::sptr usrp = uhd::usrp::multi_usrp::make(args);
//std::cout << boost::format("Using Device: %s\n") % usrp->get_pp_string();
usrp_state_t *s = (usrp_state_t *)device->priv;
try {
size_t num_mboards = s->usrp->get_num_mboards();
size_t num_gps_locked = 0;
for (size_t mboard = 0; mboard < num_mboards; mboard++) {
std::cout << "Synchronizing mboard " << mboard << ": " << s->usrp->get_mboard_name(mboard) << std::endl;
bool ref_locked = check_ref_locked(s,mboard);
if (ref_locked) {
std::cout << boost::format("Ref Locked\n");
} else {
std::cout << "Failed to lock to GPSDO 10 MHz Reference. Exiting." << std::endl;
exit(EXIT_FAILURE);
}
//Wait for GPS lock
bool gps_locked = s->usrp->get_mboard_sensor("gps_locked", mboard).to_bool();
if(gps_locked) {
num_gps_locked++;
std::cout << boost::format("GPS Locked\n");
} else {
LOG_W(HW,"WARNING: GPS not locked - time will not be accurate until locked\n");
}
//Set to GPS time
uhd::time_spec_t gps_time = uhd::time_spec_t(time_t(s->usrp->get_mboard_sensor("gps_time", mboard).to_int()));
s->usrp->set_time_next_pps(gps_time+1.0, mboard);
//s->usrp->set_time_next_pps(uhd::time_spec_t(0.0));
//Wait for it to apply
//The wait is 2 seconds because N-Series has a known issue where
//the time at the last PPS does not properly update at the PPS edge
//when the time is actually set.
boost::this_thread::sleep(boost::posix_time::seconds(2));
//Check times
gps_time = uhd::time_spec_t(time_t(s->usrp->get_mboard_sensor("gps_time", mboard).to_int()));
uhd::time_spec_t time_last_pps = s->usrp->get_time_last_pps(mboard);
std::cout << "USRP time: " << (boost::format("%0.9f") % time_last_pps.get_real_secs()) << std::endl;
std::cout << "GPSDO time: " << (boost::format("%0.9f") % gps_time.get_real_secs()) << std::endl;
if (gps_time.get_real_secs() == time_last_pps.get_real_secs())
std::cout << std::endl << "SUCCESS: USRP time synchronized to GPS time" << std::endl << std::endl;
else
std::cerr << std::endl << "ERROR: Failed to synchronize USRP time to GPS time" << std::endl << std::endl;
}
if (num_gps_locked == num_mboards and num_mboards > 1) {
//Check to see if all USRP times are aligned
//First, wait for PPS.
uhd::time_spec_t time_last_pps = s->usrp->get_time_last_pps();
while (time_last_pps == s->usrp->get_time_last_pps()) {
boost::this_thread::sleep(boost::posix_time::milliseconds(1));
}
//Sleep a little to make sure all devices have seen a PPS edge
boost::this_thread::sleep(boost::posix_time::milliseconds(200));
//Compare times across all mboards
bool all_matched = true;
uhd::time_spec_t mboard0_time = s->usrp->get_time_last_pps(0);
for (size_t mboard = 1; mboard < num_mboards; mboard++) {
uhd::time_spec_t mboard_time = s->usrp->get_time_last_pps(mboard);
if (mboard_time != mboard0_time) {
all_matched = false;
std::cerr << (boost::format("ERROR: Times are not aligned: USRP 0=%0.9f, USRP %d=%0.9f")
% mboard0_time.get_real_secs()
% mboard
% mboard_time.get_real_secs()) << std::endl;
}
}
if (all_matched) {
std::cout << "SUCCESS: USRP times aligned" << std::endl << std::endl;
} else {
std::cout << "ERROR: USRP times are not aligned" << std::endl << std::endl;
}
}
} catch (std::exception &e) {
std::cout << boost::format("\nError: %s") % e.what();
std::cout << boost::format("This could mean that you have not installed the GPSDO correctly.\n\n");
std::cout << boost::format("Visit one of these pages if the problem persists:\n");
std::cout << boost::format(" * N2X0/E1X0: http://files.ettus.com/manual/page_gpsdo.html");
std::cout << boost::format(" * X3X0: http://files.ettus.com/manual/page_gpsdo_x3x0.html\n\n");
std::cout << boost::format(" * E3X0: http://files.ettus.com/manual/page_usrp_e3x0.html#e3x0_hw_gps\n\n");
exit(EXIT_FAILURE);
}
return EXIT_SUCCESS;
}
#define ATR_MASK 0x7f //pins controlled by ATR
#define ATR_RX 0x50 //data[4] and data[6]
#define ATR_XX 0x20 //data[5]
#define MAN_MASK ATR_MASK ^ 0xFFF // manually controlled pins
#define MAN_MASK_ID 0x7E0 // manually controlled pins for ID in particular for Beams switching
static void trx_usrp_start_interdigital_gpio(openair0_device *device, usrp_state_t *s)
{
AssertFatal(device->type == USRP_X400_DEV,
"interdigital frontend device for beam management can only be used together with an X400\n");
// set data direction register (DDR) to output
s->usrp->set_gpio_attr(s->gpio_bank, "DDR", 0xfff, 0xfff);
// set lower GPIO#1 to be controlled automatically by ATR (the rest bits are controlled manually)
s->usrp->set_gpio_attr(s->gpio_bank, "CTRL", (1 << 1), (1 << 1));
// set GPIO1 (Tx/Rx1) to 1 for MHU1 for transmistting
s->usrp->set_gpio_attr(s->gpio_bank, "ATR_XX", (1 << 1), (1 << 1));
// set GPIO4 (ID0) to 1 and GPIO2 (TX/RX2) &GPIO3 (ID1) to 0
s->usrp->set_gpio_attr(s->gpio_bank, "OUT", (1 << 4), 0x1c);
}
static void trx_usrp_start_generic_gpio(openair0_device *device, usrp_state_t *s)
{
// setup GPIO for TDD, GPIO(4) = ATR_RX
// set data direction register (DDR) to output
s->usrp->set_gpio_attr(s->gpio_bank, "DDR", 0xfff, 0xfff);
// set bits to be controlled automatically by ATR
s->usrp->set_gpio_attr(s->gpio_bank, "CTRL", ATR_MASK, 0xfff);
// set bits to 1 when the radio is only receiving (ATR_RX)
s->usrp->set_gpio_attr(s->gpio_bank, "ATR_RX", ATR_RX, ATR_MASK);
// set bits to 1 when the radio is transmitting and receiveing (ATR_XX)
// (we use full duplex here, because our RX is on all the time - this might need to change later)
s->usrp->set_gpio_attr(s->gpio_bank, "ATR_XX", ATR_XX, ATR_MASK);
// set all other pins to manual
s->usrp->set_gpio_attr(s->gpio_bank, "OUT", MAN_MASK, 0xfff);
}
/*! \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
*/
static int trx_usrp_start(openair0_device *device) {
usrp_state_t *s = (usrp_state_t *)device->priv;
s->gpio_bank = (char *) "FP0"; //good for B210, X310 and N310
#if UHD_VERSION>4000000
if (device->type == USRP_X400_DEV) {
// Set every pin on GPIO0 to be controlled by DB0_RF0
std::vector<std::string> sxx{12, "DB0_RF0"};
s->gpio_bank = (char *) "GPIO0";
s->usrp->set_gpio_src(s->gpio_bank, sxx);
}
#endif
switch (device->openair0_cfg->gpio_controller) {
case RU_GPIO_CONTROL_GENERIC:
trx_usrp_start_generic_gpio(device, s);
break;
case RU_GPIO_CONTROL_INTERDIGITAL:
trx_usrp_start_interdigital_gpio(device, s);
break;
default:
AssertFatal(false, "illegal GPIO controller %d\n", device->openair0_cfg->gpio_controller);
}
s->wait_for_first_pps = 1;
s->rx_count = 0;
s->tx_count = 0;
//s->first_tx = 1;
//s->first_rx = 1;
s->rx_timestamp = 0;
//wait for next pps
uhd::time_spec_t last_pps = s->usrp->get_time_last_pps();
uhd::time_spec_t current_pps = s->usrp->get_time_last_pps();
while(current_pps == last_pps) {
boost::this_thread::sleep(boost::posix_time::milliseconds(1));
current_pps = s->usrp->get_time_last_pps();
}
LOG_I(HW,"current pps at %f, starting streaming at %f\n",current_pps.get_real_secs(),current_pps.get_real_secs()+1.0);
uhd::stream_cmd_t cmd(uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS);
cmd.time_spec = uhd::time_spec_t(current_pps+1.0);
cmd.stream_now = false; // start at constant delay
s->rx_stream->issue_stream_cmd(cmd);
return 0;
}
static void trx_usrp_send_end_of_burst(usrp_state_t *s)
{
// if last packet sent was end of burst no need to do anything. otherwise send end of burst packet
if (s->tx_md.end_of_burst)
return;
s->tx_md.end_of_burst = true;
s->tx_md.start_of_burst = false;
s->tx_md.has_time_spec = false;
s->tx_stream->send("", 0, s->tx_md);
}
static void trx_usrp_finish_rx(usrp_state_t *s)
{
/* finish rx by sending STREAM_MODE_STOP_CONTINUOUS */
uhd::stream_cmd_t cmd(uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS);
s->rx_stream->issue_stream_cmd(cmd);
/* collect all remaining samples (not sure if needed) */
size_t samples;
uint8_t buf[1024];
std::vector<void *> buff_ptrs;
for (size_t i = 0; i < s->usrp->get_rx_num_channels(); i++) buff_ptrs.push_back(buf);
do {
samples = s->rx_stream->recv(buff_ptrs, sizeof(buf)/4, s->rx_md);
} while (samples > 0);
}
static void trx_usrp_write_reset(openair0_thread_t *wt);
/*! \brief Terminate operation of the USRP transceiver -- free all associated resources
* \param device the hardware to use
*/
static void trx_usrp_end(openair0_device *device) {
if (device == NULL)
return;
usrp_state_t *s = (usrp_state_t *)device->priv;
AssertFatal(s != NULL, "%s() called on uninitialized USRP\n", __func__);
iqrecorder_end(device);
LOG_I(HW, "releasing USRP\n");
if (usrp_tx_thread != 0)
trx_usrp_write_reset(&device->write_thread);
/* finish tx and rx */
trx_usrp_send_end_of_burst(s);
trx_usrp_finish_rx(s);
/* set tx_stream, rx_stream, and usrp to NULL to clear/free them */
s->tx_stream = NULL;
s->rx_stream = NULL;
s->usrp = NULL;
free(s);
device->priv = NULL;
device->trx_start_func = NULL;
device->trx_get_stats_func = NULL;
device->trx_reset_stats_func = NULL;
device->trx_end_func = NULL;
device->trx_stop_func = NULL;
device->trx_set_freq_func = NULL;
device->trx_set_gains_func = NULL;
device->trx_write_init = NULL;
}
/*! \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 which 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 antennas
@param flags flags must be set to true if timestamp parameter needs to be applied
*/
static int trx_usrp_write(openair0_device *device,
openair0_timestamp timestamp,
void **buff,
int nsamps,
int cc,
int flags) {
int ret=0;
usrp_state_t *s = (usrp_state_t *)device->priv;
timestamp -= device->openair0_cfg->command_line_sample_advance + device->openair0_cfg->tx_sample_advance;
int nsamps2; // aligned to upper 32 or 16 byte boundary
radio_tx_burst_flag_t flags_burst = (radio_tx_burst_flag_t) (flags & 0xf);
radio_tx_gpio_flag_t flags_gpio = (radio_tx_gpio_flag_t) ((flags >> 4) & 0x1fff);
int end;
openair0_thread_t *write_thread = &device->write_thread;
openair0_write_package_t *write_package = write_thread->write_package;
AssertFatal( MAX_WRITE_THREAD_BUFFER_SIZE >= cc,"Do not support more than %d cc number\n", MAX_WRITE_THREAD_BUFFER_SIZE);
bool first_packet_state=false,last_packet_state=false;
if (flags_burst == TX_BURST_START) {
// s->tx_md.start_of_burst = true;
// s->tx_md.end_of_burst = false;
first_packet_state = true;
last_packet_state = false;
} else if (flags_burst == TX_BURST_END) {
//s->tx_md.start_of_burst = false;
//s->tx_md.end_of_burst = true;
first_packet_state = false;
last_packet_state = true;
} else if (flags_burst == TX_BURST_START_AND_END) {
// s->tx_md.start_of_burst = true;
// s->tx_md.end_of_burst = true;
first_packet_state = true;
last_packet_state = true;
} else if (flags_burst == TX_BURST_MIDDLE) {
// s->tx_md.start_of_burst = false;
// s->tx_md.end_of_burst = false;
first_packet_state = false;
last_packet_state = false;
}
else if (flags_burst==10) { // fail safe mode
// s->tx_md.has_time_spec = false;
// s->tx_md.start_of_burst = false;
// s->tx_md.end_of_burst = true;
first_packet_state = false;
last_packet_state = true;
}
if (usrp_tx_thread == 0) {
nsamps2 = (nsamps+7)>>3;
simde__m256i buff_tx[cc < 2 ? 2 : cc][nsamps2];
// bring RX data into 12 LSBs for softmodem RX
for (int i = 0; i < cc; i++) {
for (int j = 0; j < nsamps2; j++) {
if ((((uintptr_t)buff[i]) & 0x1F) == 0) {
buff_tx[i][j] = simde_mm256_slli_epi16(((simde__m256i *)buff[i])[j], 4);
} else {
simde__m256i tmp = simde_mm256_loadu_si256(((simde__m256i *)buff[i]) + j);
buff_tx[i][j] = simde_mm256_slli_epi16(tmp, 4);
}
}
}
s->tx_md.has_time_spec = true;
s->tx_md.start_of_burst = (s->tx_count==0) ? true : first_packet_state;
s->tx_md.end_of_burst = last_packet_state;
s->tx_md.time_spec = uhd::time_spec_t::from_ticks(timestamp, s->sample_rate);
s->tx_count++;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_BEAM_SWITCHING_GPIO,1);
// bit 13 enables gpio
if ((flags_gpio & TX_GPIO_CHANGE) != 0) {
// push GPIO bits
s->usrp->set_command_time(s->tx_md.time_spec);
if (device->openair0_cfg->gpio_controller == RU_GPIO_CONTROL_INTERDIGITAL)
s->usrp->set_gpio_attr(s->gpio_bank, "OUT", flags_gpio, MAN_MASK_ID);
else
s->usrp->set_gpio_attr(s->gpio_bank, "OUT", flags_gpio, MAN_MASK);
s->usrp->clear_command_time();
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_BEAM_SWITCHING_GPIO,0);
if (cc>1) {
std::vector<void *> buff_ptrs;
for (int i=0; i<cc; i++)
buff_ptrs.push_back(&(((int16_t *)buff_tx[i])[0]));
ret = (int)s->tx_stream->send(buff_ptrs, nsamps, s->tx_md);
}
else {
ret = (int)s->tx_stream->send(&(((int16_t *)buff_tx[0])[0]), nsamps, s->tx_md);
}
if (ret != nsamps) LOG_E(HW,"[xmit] tx samples %d != %d\n",ret,nsamps);
return ret;
} else {
pthread_mutex_lock(&write_thread->mutex_write);
if (write_thread->count_write >= MAX_WRITE_THREAD_PACKAGE) {
LOG_W(HW,
"Buffer overflow, count_write = %d, start = %d end = %d, resetting write package\n",
write_thread->count_write,
write_thread->start,
write_thread->end);
write_thread->end = write_thread->start;
write_thread->count_write = 0;
}
end = write_thread->end;
write_package[end].timestamp = timestamp;
write_package[end].nsamps = nsamps;
write_package[end].cc = cc;
write_package[end].first_packet = first_packet_state;
write_package[end].last_packet = last_packet_state;
write_package[end].flags_gpio = flags_gpio;
for (int i = 0; i < cc; i++)
write_package[end].buff[i] = buff[i];
write_thread->count_write++;
write_thread->end = (write_thread->end + 1) % MAX_WRITE_THREAD_PACKAGE;
LOG_D(HW, "Signaling TX TS %llu\n", (unsigned long long)timestamp);
pthread_cond_signal(&write_thread->cond_write);
pthread_mutex_unlock(&write_thread->mutex_write);
return 0;
}
}
//-----------------------start--------------------------
/*! \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 which 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 antennas
@param flags flags must be set to true if timestamp parameter needs to be applied
*/
void *trx_usrp_write_thread(void * arg){
int ret=0;
openair0_device *device=(openair0_device *)arg;
openair0_thread_t *write_thread = &device->write_thread;
openair0_write_package_t *write_package = write_thread->write_package;
usrp_state_t *s;
int nsamps2; // aligned to upper 32 or 16 byte boundary
int start;
openair0_timestamp timestamp;
void **buff;
int nsamps;
int cc;
signed char first_packet;
signed char last_packet;
int flags_gpio;
printf("trx_usrp_write_thread started on cpu %d\n",sched_getcpu());
while(1){
pthread_mutex_lock(&write_thread->mutex_write);
while (write_thread->count_write == 0) {
pthread_cond_wait(&write_thread->cond_write,&write_thread->mutex_write); // this unlocks mutex_rxtx while waiting and then locks it again
}
if (write_thread->write_thread_exit)
break;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_THREAD, 1 );
s = (usrp_state_t *)device->priv;
start = write_thread->start;
timestamp = write_package[start].timestamp;
buff = write_package[start].buff;
nsamps = write_package[start].nsamps;
cc = write_package[start].cc;
first_packet = write_package[start].first_packet;
last_packet = write_package[start].last_packet;
flags_gpio = write_package[start].flags_gpio;
write_thread->start = (write_thread->start + 1)% MAX_WRITE_THREAD_PACKAGE;
write_thread->count_write--;
pthread_mutex_unlock(&write_thread->mutex_write);
/*if(write_thread->count_write != 0){
LOG_W(HW,"count write = %d, start = %d, end = %d\n", write_thread->count_write, write_thread->start, write_thread->end);
}*/
nsamps2 = (nsamps+7)>>3;
simde__m256i buff_tx[cc < 2 ? 2 : cc][nsamps2];
// bring RX data into 12 LSBs for softmodem RX
for (int i = 0; i < cc; i++) {
for (int j = 0; j < nsamps2; j++) {
if ((((uintptr_t) buff[i])&0x1F)==0) {
buff_tx[i][j] = simde_mm256_slli_epi16(((simde__m256i *)buff[i])[j], 4);
}
else
{
simde__m256i tmp = simde_mm256_loadu_si256(((simde__m256i *)buff[i]) + j);
buff_tx[i][j] = simde_mm256_slli_epi16(tmp,4);
}
}
}
s->tx_md.has_time_spec = true;
s->tx_md.start_of_burst = (s->tx_count==0) ? true : first_packet;
s->tx_md.end_of_burst = last_packet;
s->tx_md.time_spec = uhd::time_spec_t::from_ticks(timestamp, s->sample_rate);
LOG_D(PHY,"usrp_tx_write: tx_count %llu SoB %d, EoB %d, TS %llu\n",(unsigned long long)s->tx_count,s->tx_md.start_of_burst,s->tx_md.end_of_burst,(unsigned long long)timestamp);
s->tx_count++;
// bit 3 enables gpio (for backward compatibility)
if (flags_gpio&0x1000) {
// push GPIO bits
s->usrp->set_command_time(s->tx_md.time_spec);
if (device->openair0_cfg->gpio_controller == RU_GPIO_CONTROL_INTERDIGITAL)
s->usrp->set_gpio_attr(s->gpio_bank, "OUT", flags_gpio, MAN_MASK_ID);
else
s->usrp->set_gpio_attr(s->gpio_bank, "OUT", flags_gpio, MAN_MASK);
s->usrp->clear_command_time();
}
if (cc>1) {
std::vector<void *> buff_ptrs;
for (int i=0; i<cc; i++)
buff_ptrs.push_back(&(((int16_t *)buff_tx[i])[0]));
ret = (int)s->tx_stream->send(buff_ptrs, nsamps, s->tx_md);
}
else {
ret = (int)s->tx_stream->send(&(((int16_t *)buff_tx[0])[0]), nsamps, s->tx_md);
}
if (ret != nsamps) LOG_E(HW,"[xmit] tx samples %d != %d\n",ret,nsamps);
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_USRP_SEND_RETURN, ret );
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_THREAD, 0 );
}
return NULL;
}
int trx_usrp_write_init(openair0_device *device){
//uhd::set_thread_priority_safe(1.0);
openair0_thread_t *write_thread = &device->write_thread;
printf("initializing tx write thread\n");
write_thread->start = 0;
write_thread->end = 0;
write_thread->count_write = 0;
write_thread->write_thread_exit = false;
printf("end of tx write thread\n");
pthread_mutex_init(&write_thread->mutex_write, NULL);
pthread_cond_init(&write_thread->cond_write, NULL);
threadCreate(&write_thread->pthread_write,
trx_usrp_write_thread,
(void *)device,
(char*)"trx_usrp_write_thread",
-1,
OAI_PRIORITY_RT_MAX);
return(0);
}
static void trx_usrp_write_reset(openair0_thread_t *wt) {
pthread_mutex_lock(&wt->mutex_write);
wt->count_write = 1;
wt->write_thread_exit = true;
pthread_cond_signal(&wt->cond_write);
pthread_mutex_unlock(&wt->mutex_write);
void *retval = NULL;
pthread_join(wt->pthread_write, &retval);
LOG_I(HW, "stopped USRP write thread\n");
}
//---------------------end-------------------------
/*! \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
*/
static int trx_usrp_read(openair0_device *device, openair0_timestamp *ptimestamp, void **buff, int nsamps, int cc) {
usrp_state_t *s = (usrp_state_t *)device->priv;
int samples_received=0;
int nsamps2; // aligned to upper 32 or 16 byte boundary
nsamps2 = (nsamps+7)>>3;
simde__m256i buff_tmp[cc < 2 ? 2 : cc][nsamps2];
static int read_count = 0;
int rxshift;
switch (device->type) {
case USRP_B200_DEV:
rxshift=4;
break;
case USRP_X300_DEV:
case USRP_N300_DEV:
case USRP_X400_DEV:
rxshift=2;
break;
default:
AssertFatal(1==0,"Shouldn't be here\n");
}
samples_received=0;
while (samples_received != nsamps) {
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_tmp[i]+samples_received);
samples_received += s->rx_stream->recv(buff_ptrs, nsamps-samples_received, s->rx_md);
} else {
// receive a single channel (e.g. from connector RF A)
samples_received += s->rx_stream->recv((void*)((int32_t*)buff_tmp[0]+samples_received),
nsamps-samples_received, s->rx_md);
}
if ((s->wait_for_first_pps == 0) && (s->rx_md.error_code!=uhd::rx_metadata_t::ERROR_CODE_NONE))
break;
if ((s->wait_for_first_pps == 1) && (samples_received != nsamps)) {
printf("sleep...\n"); //usleep(100);
}
}
if (samples_received == nsamps) s->wait_for_first_pps=0;
// bring RX data into 12 LSBs for softmodem RX
for (int i=0; i<cc; i++) {
for (int j = 0; j < nsamps2; j++) {
// FK: in some cases the buffer might not be 32 byte aligned, so we cannot use avx2
if ((((uintptr_t) buff[i])&0x1F)==0) {
((simde__m256i *)buff[i])[j] = simde_mm256_srai_epi16(buff_tmp[i][j], rxshift);
} else {
simde__m256i tmp = simde_mm256_srai_epi16(buff_tmp[i][j], rxshift);
simde_mm256_storeu_si256(((simde__m256i *)buff[i]) + j, tmp);
}
}
}
if (samples_received < nsamps) {
LOG_E(HW,"[recv] received %d samples out of %d\n",samples_received,nsamps);
}
if ( s->rx_md.error_code != uhd::rx_metadata_t::ERROR_CODE_NONE)
LOG_E(HW, "%s\n", s->rx_md.to_pp_string(true).c_str());
s->rx_count += nsamps;
s->rx_timestamp = s->rx_md.time_spec.to_ticks(s->sample_rate);
*ptimestamp = s->rx_timestamp;
recplay_state_t *recPlay=device->recplay_state;
if (device->openair0_cfg->recplay_mode == RECPLAY_RECORDMODE) { // record mode
// Copy subframes to memory (later dump on a file)
// The number of read samples might differ from BELL_LABS_IQ_BYTES_PER_SF
// The number of read samples is always stored in nbBytes but the record is always of BELL_LABS_IQ_BYTES_PER_SF size
if (recPlay->nbSamplesBlocks <= device->openair0_cfg->recplay_conf->u_sf_max &&
recPlay->maxSizeBytes >= (recPlay->currentPtr-(uint8_t *)recPlay->ms_sample) +
sizeof(iqrec_t) + BELL_LABS_IQ_BYTES_PER_SF) {
iqrec_t *hdr=(iqrec_t *)recPlay->currentPtr;
struct timespec trec;
(void) clock_gettime(CLOCK_REALTIME, &trec);
hdr->header = BELL_LABS_IQ_HEADER;
hdr->ts = *ptimestamp;
hdr->nbBytes=nsamps*4; // real number of samples bytes
hdr->tv_sec = trec.tv_sec; // record secs
hdr->tv_usec = trec.tv_nsec/1000; // record µsecs
memcpy(hdr+1, buff[0], nsamps*4);
recPlay->currentPtr+=sizeof(iqrec_t)+BELL_LABS_IQ_BYTES_PER_SF; // record size is constant (BELL_LABS_IQ_BYTES_PER_SF)
recPlay->nbSamplesBlocks++;
LOG_D(HW,"recorded %d samples, for TS %lu, shift in buffer %ld nbBytes %d nbSamplesBlocks %d\n", nsamps, hdr->ts, recPlay->currentPtr-(uint8_t *)recPlay->ms_sample, (int)hdr->nbBytes, (int)recPlay->nbSamplesBlocks);
} else
exit_function(__FILE__, __FUNCTION__, __LINE__, "Recording reaches max iq limit\n", OAI_EXIT_NORMAL);
}
read_count++;
LOG_D(HW,"usrp_lib: returning %d samples at ts %lu read_count %d\n", samples_received, *ptimestamp, read_count);
return samples_received;
}
/*! \brief Compares two variables within precision
* \param a first variable
* \param b second variable
*/
static bool is_equal(double a, double b) {
return std::fabs(a-b) < std::numeric_limits<double>::epsilon();
}
void *freq_thread(void *arg) {
openair0_device *device=(openair0_device *)arg;
usrp_state_t *s = (usrp_state_t *)device->priv;
uhd::tune_request_t tx_tune_req(device->openair0_cfg[0].tx_freq[0],
device->openair0_cfg[0].tune_offset);
uhd::tune_request_t rx_tune_req(device->openair0_cfg[0].rx_freq[0],
device->openair0_cfg[0].tune_offset);
s->usrp->set_tx_freq(tx_tune_req);
s->usrp->set_rx_freq(rx_tune_req);
return NULL;
}
/*! \brief Set frequencies (TX/RX). Spawns a thread to handle the frequency change to not block the calling thread
* \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
*/
int trx_usrp_set_freq(openair0_device *device, openair0_config_t *openair0_cfg)
{
usrp_state_t *s = (usrp_state_t *)device->priv;
printf("Setting USRP TX Freq %f, RX Freq %f, tune_offset: %f\n", openair0_cfg[0].tx_freq[0], openair0_cfg[0].rx_freq[0], openair0_cfg[0].tune_offset);
uhd::tune_request_t tx_tune_req(openair0_cfg[0].tx_freq[0], openair0_cfg[0].tune_offset);
uhd::tune_request_t rx_tune_req(openair0_cfg[0].rx_freq[0], openair0_cfg[0].tune_offset);
s->usrp->set_tx_freq(tx_tune_req);
s->usrp->set_rx_freq(rx_tune_req);
return(0);
}
/*! \brief Set RX frequencies
* \param device the hardware to use
* \param openair0_cfg RF frontend parameters set by application
* \returns 0 in success
*/
int openair0_set_rx_frequencies(openair0_device *device, openair0_config_t *openair0_cfg) {
usrp_state_t *s = (usrp_state_t *)device->priv;
uhd::tune_request_t rx_tune_req(openair0_cfg[0].rx_freq[0], openair0_cfg[0].tune_offset);
printf("In openair0_set_rx_frequencies, freq: %f, tune offset: %f\n",
openair0_cfg[0].rx_freq[0], openair0_cfg[0].tune_offset);
//rx_tune_req.rf_freq_policy = uhd::tune_request_t::POLICY_MANUAL;
//rx_tune_req.rf_freq = openair0_cfg[0].rx_freq[0];
s->usrp->set_rx_freq(rx_tune_req);
return(0);
}
/*! \brief Set Gains (TX/RX)
* \param device the hardware to use
* \param openair0_cfg RF frontend parameters set by application
* \returns 0 in success
*/
int trx_usrp_set_gains(openair0_device *device,
openair0_config_t *openair0_cfg) {
usrp_state_t *s = (usrp_state_t *)device->priv;
::uhd::gain_range_t gain_range_tx = s->usrp->get_tx_gain_range(0);
s->usrp->set_tx_gain(gain_range_tx.stop()-openair0_cfg[0].tx_gain[0]);
::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()) {
LOG_E(HW,"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]);
LOG_I(HW,"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());
return(0);
}
/*! \brief Stop USRP
* \param card refers to the hardware index to use
*/
int trx_usrp_stop(openair0_device *device) {
return(0);
}
/*! \brief USRPB210 RX calibration table */
rx_gain_calib_table_t calib_table_b210[] = {
{3500000000.0,44.0},
{2660000000.0,49.0},
{2300000000.0,50.0},
{1880000000.0,53.0},
{816000000.0,58.0},
{-1,0}
};
/*! \brief USRPB210 RX calibration table */
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}
};
/*! \brief USRPx310 RX calibration table */
rx_gain_calib_table_t calib_table_x310[] = {
{3500000000.0,77.0},
{2660000000.0,81.0},
{2300000000.0,81.0},
{1880000000.0,82.0},
{816000000.0,85.0},
{-1,0}
};
/*! \brief USRPn3xf RX calibration table */
rx_gain_calib_table_t calib_table_n310[] = {
{3500000000.0,0.0},
{2660000000.0,0.0},
{2300000000.0,0.0},
{1880000000.0,0.0},
{816000000.0, 0.0},
{-1,0}
};
/*! \brief Empty RX calibration table */
rx_gain_calib_table_t calib_table_none[] = {
{3500000000.0,0.0},
{2660000000.0,0.0},
{2300000000.0,0.0},
{1880000000.0,0.0},
{816000000.0, 0.0},
{-1,0}
};
/*! \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
*/
void set_rx_gain_offset(openair0_config_t *openair0_cfg, int chain_index,int bw_gain_adjust) {
int i=0;
// loop through calibration table to find best adjustment factor for RX frequency
double min_diff = 6e9,diff,gain_adj=0.0;
if (bw_gain_adjust==1) {
switch ((int)openair0_cfg[0].sample_rate) {
case 46080000:
break;
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:
LOG_E(HW,"unknown sampling rate %d\n",(int)openair0_cfg[0].sample_rate);
//exit(-1);
break;
}
}
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);
LOG_I(HW,"cal %d: freq %f, offset %f, diff %f\n",
i,
openair0_cfg->rx_gain_calib_table[i].freq,
openair0_cfg->rx_gain_calib_table[i].offset,diff);
if (min_diff > diff) {
min_diff = diff;
openair0_cfg->rx_gain_offset[chain_index] = openair0_cfg->rx_gain_calib_table[i].offset+gain_adj;
}
i++;
}
}
/*! \brief print the USRP statistics
* \param device the hardware to use
* \returns 0 on success
*/
int trx_usrp_get_stats(openair0_device *device) {
return(0);
}
/*! \brief Reset the USRP statistics
* \param device the hardware to use
* \returns 0 on success
*/
int trx_usrp_reset_stats(openair0_device *device) {
return(0);
}
extern "C" {
int device_init(openair0_device *device, openair0_config_t *openair0_cfg) {
LOG_I(HW, "openair0_cfg[0].sdr_addrs == '%s'\n", openair0_cfg[0].sdr_addrs);
LOG_I(HW, "openair0_cfg[0].clock_source == '%d' (internal = %d, external = %d)\n", openair0_cfg[0].clock_source,internal,external);
usrp_state_t *s ;
int choffset = 0;
if ( device->priv == NULL) {
s=(usrp_state_t *)calloc(1, sizeof(usrp_state_t));
device->priv=s;
AssertFatal( s!=NULL,"USRP device: memory allocation failure\n");
} else {
LOG_E(HW, "multiple device init detected\n");
return 0;
}
device->openair0_cfg = openair0_cfg;
device->trx_start_func = trx_usrp_start;
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;
device->trx_write_init = trx_usrp_write_init;
// hotfix! to be checked later
//uhd::set_thread_priority_safe(1.0);
// Initialize USRP device
int vers=0,subvers=0,subsubvers=0;
int bw_gain_adjust=0;
if (device->openair0_cfg->recplay_mode == RECPLAY_RECORDMODE) {
std::cerr << "USRP device initialized in subframes record mode" << std::endl;
}
sscanf(uhd::get_version_string().c_str(),"%d.%d.%d",&vers,&subvers,&subsubvers);
LOG_I(HW,"UHD version %s (%d.%d.%d)\n",
uhd::get_version_string().c_str(),vers,subvers,subsubvers);
std::string args,tx_subdev,rx_subdev;
if (openair0_cfg[0].sdr_addrs == NULL) {
args = "type=b200";
} else {
args = openair0_cfg[0].sdr_addrs;
LOG_I(HW,"Checking for USRP with args %s\n",openair0_cfg[0].sdr_addrs);
}
uhd::device_addrs_t device_adds = uhd::device::find(args);
if (device_adds.size() == 0) {
LOG_E(HW,"No USRP Device Found.\n ");
free(s);
return -1;
} else if (device_adds.size() > 1) {
LOG_E(HW,"More than one USRP Device Found. Please specify device more precisely in config file.\n");
free(s);
return -1;
}
std::string type_str, product_str;
if (args.find("addr0") != std::string::npos) {
type_str = "type0";
product_str = "product0";
}
else {
type_str = "type";
product_str = "product";
}
LOG_I(HW,"Found USRP %s\n", device_adds[0].get(type_str).c_str());
double usrp_master_clock;
if (device_adds[0].get(type_str) == "b200") {
device->type = USRP_B200_DEV;
usrp_master_clock = 30.72e6;
args += boost::str(boost::format(",master_clock_rate=%f") % usrp_master_clock);
args += ",num_send_frames=256,num_recv_frames=256, send_frame_size=7680, recv_frame_size=7680" ;
}
if (device_adds[0].get(type_str) == "n3xx") {
const std::string product = device_adds[0].get(product_str);
printf("Found USRP %s\n", product.c_str());
device->type=USRP_N300_DEV;
if (product == "n320")
usrp_master_clock = 245.76e6; // N320 does not support 122.88e6 master clock rate
else
usrp_master_clock = 122.88e6;
args += boost::str(boost::format(",master_clock_rate=%f") % usrp_master_clock);
if ( 0 != system("sysctl -w net.core.rmem_max=62500000 net.core.wmem_max=62500000") )
LOG_W(HW,"Can't set kernel parameters for N3x0\n");
}
if (device_adds[0].get(type_str) == "x300") {
printf("Found USRP x300\n");
device->type=USRP_X300_DEV;
usrp_master_clock = 184.32e6;
args += boost::str(boost::format(",master_clock_rate=%f") % usrp_master_clock);
// USRP recommended: https://files.ettus.com/manual/page_usrp_x3x0_config.html
if ( 0 != system("sysctl -w net.core.rmem_max=33554432 net.core.wmem_max=33554432") )
LOG_W(HW,"Can't set kernel parameters for X3xx\n");
}
if (device_adds[0].get(type_str) == "x4xx") {
printf("Found USRP x400\n");
device->type = USRP_X400_DEV;
usrp_master_clock = 245.76e6;
args += boost::str(boost::format(",master_clock_rate=%f") % usrp_master_clock);
// https://kb.ettus.com/USRP_Host_Performance_Tuning_Tips_and_Tricks
if (0 != system("sysctl -w net.core.rmem_max=62500000 net.core.wmem_max=62500000"))
LOG_W(HW, "Can't set kernel parameters for X4x0\n");
}
s->usrp = uhd::usrp::multi_usrp::make(args);
if (args.find("clock_source")==std::string::npos) {
if (openair0_cfg[0].clock_source == internal) {
s->usrp->set_clock_source("internal");
LOG_I(HW,"Setting clock source to internal\n");
}
else if (openair0_cfg[0].clock_source == external ) {
s->usrp->set_clock_source("external");
LOG_I(HW,"Setting clock source to external\n");
}
else if (openair0_cfg[0].clock_source==gpsdo) {
s->usrp->set_clock_source("gpsdo");
LOG_I(HW,"Setting clock source to gpsdo\n");
}
else {
LOG_W(HW,"Clock source set neither in usrp_args nor on command line, using default!\n");
}
}
else {
if (openair0_cfg[0].clock_source != unset) {
LOG_W(HW,"Clock source set in both usrp_args and in clock_source, ingnoring the latter!\n");
}
}
if (args.find("time_source")==std::string::npos) {
if (openair0_cfg[0].time_source == internal) {
s->usrp->set_time_source("internal");
LOG_I(HW,"Setting time source to internal\n");
}
else if (openair0_cfg[0].time_source == external ) {
s->usrp->set_time_source("external");
LOG_I(HW,"Setting time source to external\n");
}
else if (openair0_cfg[0].time_source==gpsdo) {
s->usrp->set_time_source("gpsdo");
LOG_I(HW,"Setting time source to gpsdo\n");
}
else {
LOG_W(HW,"Time source set neither in usrp_args nor on command line, using default!\n");
}
}
else {
if (openair0_cfg[0].clock_source != unset) {
LOG_W(HW,"Time source set in both usrp_args and in time_source, ingnoring the latter!\n");
}
}
if (s->usrp->get_clock_source(0) == "gpsdo") {
s->use_gps = 1;
if (sync_to_gps(device)==EXIT_SUCCESS) {
LOG_I(HW,"USRP synced with GPS!\n");
} else {
LOG_I(HW,"USRP fails to sync with GPS. Exiting.\n");
exit(EXIT_FAILURE);
}
} else {
s->usrp->set_time_next_pps(uhd::time_spec_t(0.0));
if (s->usrp->get_clock_source(0) == "external") {
if (check_ref_locked(s,0)) {
LOG_I(HW,"USRP locked to external reference!\n");
} else {
LOG_I(HW,"Failed to lock to external reference. Exiting.\n");
exit(EXIT_FAILURE);
}
}
}
if (device->type==USRP_X300_DEV) {
openair0_cfg[0].rx_gain_calib_table = calib_table_x310;
std::cerr << "-- Using calibration table: calib_table_x310" << std::endl;
}
if (device->type==USRP_N300_DEV) {
openair0_cfg[0].rx_gain_calib_table = calib_table_n310;
std::cerr << "-- Using calibration table: calib_table_n310" << std::endl;
}
if (device->type == USRP_X400_DEV) {
openair0_cfg[0].rx_gain_calib_table = calib_table_none;
std::cerr << "-- Using calibration table: calib_table_none" << std::endl;
}
if (device->type==USRP_N300_DEV || device->type==USRP_X300_DEV || device->type==USRP_X400_DEV) {
LOG_I(HW,"%s() sample_rate:%u\n", __FUNCTION__, (int)openair0_cfg[0].sample_rate);
switch ((int)openair0_cfg[0].sample_rate) {
case 245760000:
// from usrp_time_offset
// openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 15; // to be checked
openair0_cfg[0].tx_bw = 200e6;
openair0_cfg[0].rx_bw = 200e6;
break;
case 184320000:
// from usrp_time_offset
// openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 15; // to be checked
openair0_cfg[0].tx_bw = 100e6;
openair0_cfg[0].rx_bw = 100e6;
break;
case 122880000:
// from usrp_time_offset
//openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 164; //it was 15; //to be checked
openair0_cfg[0].tx_bw = 80e6;
openair0_cfg[0].rx_bw = 80e6;
break;
case 92160000:
// from usrp_time_offset
//openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 15; //to be checked
//openair0_cfg[0].tx_bw = 80e6;
//openair0_cfg[0].rx_bw = 80e6;
break;
case 61440000:
// from usrp_time_offset
//openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 15;
openair0_cfg[0].tx_bw = 40e6;
openair0_cfg[0].rx_bw = 40e6;
break;
case 46080000:
//openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 15;
openair0_cfg[0].tx_bw = 40e6;
openair0_cfg[0].rx_bw = 40e6;
break;
case 30720000:
// from usrp_time_offset
//openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 15;
openair0_cfg[0].tx_bw = 20e6;
openair0_cfg[0].rx_bw = 20e6;
break;
case 23040000:
//openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 15;
openair0_cfg[0].tx_bw = 20e6;
openair0_cfg[0].rx_bw = 20e6;
break;
case 15360000:
//openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 45;
openair0_cfg[0].tx_bw = 10e6;
openair0_cfg[0].rx_bw = 10e6;
break;
case 7680000:
//openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 50;
openair0_cfg[0].tx_bw = 5e6;
openair0_cfg[0].rx_bw = 5e6;
break;
case 1920000:
//openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 50;
openair0_cfg[0].tx_bw = 1.25e6;
openair0_cfg[0].rx_bw = 1.25e6;
break;
default:
LOG_E(HW,"Error: unknown sampling rate %f\n",openair0_cfg[0].sample_rate);
exit(-1);
break;
}
}
if (device->type == USRP_B200_DEV) {
if ((vers == 3) && (subvers == 9) && (subsubvers>=2)) {
openair0_cfg[0].rx_gain_calib_table = calib_table_b210;
bw_gain_adjust=0;
std::cerr << "-- Using calibration table: calib_table_b210" << std::endl; // Bell Labs info
} else {
openair0_cfg[0].rx_gain_calib_table = calib_table_b210_38;
bw_gain_adjust=1;
std::cerr << "-- Using calibration table: calib_table_b210_38" << std::endl; // Bell Labs info
}
switch ((int)openair0_cfg[0].sample_rate) {
case 46080000:
s->usrp->set_master_clock_rate(46.08e6);
//openair0_cfg[0].samples_per_packet = 1024;
openair0_cfg[0].tx_sample_advance = 164;
openair0_cfg[0].tx_bw = 40e6;
openair0_cfg[0].rx_bw = 40e6;
break;
case 30720000:
s->usrp->set_master_clock_rate(30.72e6);
//openair0_cfg[0].samples_per_packet = 1024;
openair0_cfg[0].tx_sample_advance = 115;
openair0_cfg[0].tx_bw = 20e6;
openair0_cfg[0].rx_bw = 20e6;
break;
case 23040000:
s->usrp->set_master_clock_rate(23.04e6); //to be checked
//openair0_cfg[0].samples_per_packet = 1024;
openair0_cfg[0].tx_sample_advance = 113;
openair0_cfg[0].tx_bw = 20e6;
openair0_cfg[0].rx_bw = 20e6;
break;
case 15360000:
s->usrp->set_master_clock_rate(30.72e06);
//openair0_cfg[0].samples_per_packet = 1024;
openair0_cfg[0].tx_sample_advance = 103;
openair0_cfg[0].tx_bw = 20e6;
openair0_cfg[0].rx_bw = 20e6;
break;
case 7680000:
s->usrp->set_master_clock_rate(30.72e6);
//openair0_cfg[0].samples_per_packet = 1024;
openair0_cfg[0].tx_sample_advance = 80;
openair0_cfg[0].tx_bw = 20e6;
openair0_cfg[0].rx_bw = 20e6;
break;
case 1920000:
s->usrp->set_master_clock_rate(30.72e6);
//openair0_cfg[0].samples_per_packet = 1024;
openair0_cfg[0].tx_sample_advance = 40;
openair0_cfg[0].tx_bw = 20e6;
openair0_cfg[0].rx_bw = 20e6;
break;
default:
LOG_E(HW,"Error: unknown sampling rate %f\n",openair0_cfg[0].sample_rate);
exit(-1);
break;
}
}
/* device specific */
//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
if(openair0_cfg[0].tx_subdev!=NULL){
LOG_I(HW, "openair0_cfg[0].tx_subdev == %s\n", openair0_cfg[0].tx_subdev);
tx_subdev = openair0_cfg[0].tx_subdev;
s->usrp->set_tx_subdev_spec(tx_subdev);
}
if(openair0_cfg[0].rx_subdev!=NULL){
LOG_I(HW, "openair0_cfg[0].rx_subdev == %s\n", openair0_cfg[0].rx_subdev);
rx_subdev = openair0_cfg[0].rx_subdev;
s->usrp->set_rx_subdev_spec(rx_subdev);
}
for(int i=0; i<((int) s->usrp->get_rx_num_channels()); i++) {
if (i<openair0_cfg[0].rx_num_channels) {
s->usrp->set_rx_rate(openair0_cfg[0].sample_rate,i+choffset);
uhd::tune_request_t rx_tune_req(openair0_cfg[0].rx_freq[i],
openair0_cfg[0].tune_offset);
s->usrp->set_rx_freq(rx_tune_req, i+choffset);
set_rx_gain_offset(&openair0_cfg[0],i,bw_gain_adjust);
::uhd::gain_range_t gain_range = s->usrp->get_rx_gain_range(i+choffset);
// limit to maximum gain
double gain=openair0_cfg[0].rx_gain[i]-openair0_cfg[0].rx_gain_offset[i];
if ( gain > gain_range.stop()) {
LOG_E(HW,"RX Gain too high, lower by %f dB\n",
gain - gain_range.stop());
gain=gain_range.stop();
}
s->usrp->set_rx_gain(gain,i+choffset);
LOG_I(HW,"RX Gain %d %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());
}
}
LOG_D(HW, "usrp->get_tx_num_channels() == %zd\n", s->usrp->get_tx_num_channels());
LOG_D(HW, "openair0_cfg[0].tx_num_channels == %d\n", openair0_cfg[0].tx_num_channels);
for(int i=0; i<((int) s->usrp->get_tx_num_channels()); i++) {
::uhd::gain_range_t gain_range_tx = s->usrp->get_tx_gain_range(i);
if (i<openair0_cfg[0].tx_num_channels) {
s->usrp->set_tx_rate(openair0_cfg[0].sample_rate,i+choffset);
uhd::tune_request_t tx_tune_req(openair0_cfg[0].tx_freq[i],
openair0_cfg[0].tune_offset);
s->usrp->set_tx_freq(tx_tune_req, i+choffset);
s->usrp->set_tx_gain(gain_range_tx.stop()-openair0_cfg[0].tx_gain[i],i+choffset);
LOG_I(HW,"USRP TX_GAIN:%3.2lf gain_range:%3.2lf tx_gain:%3.2lf\n", gain_range_tx.stop()-openair0_cfg[0].tx_gain[i], gain_range_tx.stop(), openair0_cfg[0].tx_gain[i]);
}
}
//s->usrp->set_clock_source("external");
//s->usrp->set_time_source("external");
// display USRP settings
LOG_I(HW,"Actual master clock: %fMHz...\n",s->usrp->get_master_clock_rate()/1e6);
LOG_I(HW,"Actual clock source %s...\n",s->usrp->get_clock_source(0).c_str());
LOG_I(HW,"Actual time source %s...\n",s->usrp->get_time_source(0).c_str());
// create tx & rx streamer
uhd::stream_args_t stream_args_rx("sc16", "sc16");
for (int i = 0; i<openair0_cfg[0].rx_num_channels; i++) {
LOG_I(HW,"setting rx channel %d\n",i+choffset);
stream_args_rx.channels.push_back(i+choffset);
}
s->rx_stream = s->usrp->get_rx_stream(stream_args_rx);
int samples=openair0_cfg[0].sample_rate;
int max=s->rx_stream->get_max_num_samps();
samples/=10000;
LOG_I(HW,"RF board max packet size %u, size for 100µs jitter %d \n", max, samples);
if ( samples < max ) {
stream_args_rx.args["spp"] = str(boost::format("%d") % samples );
}
LOG_I(HW,"rx_max_num_samps %zu\n",
s->rx_stream->get_max_num_samps());
uhd::stream_args_t stream_args_tx("sc16", "sc16");
for (int i = 0; i<openair0_cfg[0].tx_num_channels; i++)
stream_args_tx.channels.push_back(i+choffset);
s->tx_stream = s->usrp->get_tx_stream(stream_args_tx);
/* Setting TX/RX BW after streamers are created due to USRP calibration issue */
// N310 with UHD >= 4.2.0 has issues with changing the BW, which is a NOP on N310 in earlier versions
// see also: https://github.com/EttusResearch/uhd/issues/644
if (device->type != USRP_N300_DEV) {
for(int i=0; i<((int) s->usrp->get_tx_num_channels()) && i<openair0_cfg[0].tx_num_channels; i++)
s->usrp->set_tx_bandwidth(openair0_cfg[0].tx_bw,i+choffset);
for(int i=0; i<((int) s->usrp->get_rx_num_channels()) && i<openair0_cfg[0].rx_num_channels; i++)
s->usrp->set_rx_bandwidth(openair0_cfg[0].rx_bw,i+choffset);
}
for (int i=0; i<openair0_cfg[0].rx_num_channels; i++) {
LOG_I(HW,"RX Channel %d\n",i);
LOG_I(HW," Actual RX sample rate: %fMSps...\n",s->usrp->get_rx_rate(i+choffset)/1e6);
LOG_I(HW," Actual RX frequency: %fGHz...\n", s->usrp->get_rx_freq(i+choffset)/1e9);
LOG_I(HW," Actual RX gain: %f...\n", s->usrp->get_rx_gain(i+choffset));
LOG_I(HW," Actual RX bandwidth: %fM...\n", s->usrp->get_rx_bandwidth(i+choffset)/1e6);
LOG_I(HW," Actual RX antenna: %s...\n", s->usrp->get_rx_antenna(i+choffset).c_str());
}
for (int i=0; i<openair0_cfg[0].tx_num_channels; i++) {
LOG_I(HW,"TX Channel %d\n",i);
LOG_I(HW," Actual TX sample rate: %fMSps...\n", s->usrp->get_tx_rate(i+choffset)/1e6);
LOG_I(HW," Actual TX frequency: %fGHz...\n", s->usrp->get_tx_freq(i+choffset)/1e9);
LOG_I(HW," Actual TX gain: %f...\n", s->usrp->get_tx_gain(i+choffset));
LOG_I(HW," Actual TX bandwidth: %fM...\n", s->usrp->get_tx_bandwidth(i+choffset)/1e6);
LOG_I(HW," Actual TX antenna: %s...\n", s->usrp->get_tx_antenna(i+choffset).c_str());
LOG_I(HW," Actual TX packet size: %lu\n",s->tx_stream->get_max_num_samps());
}
std::cout << boost::format("Using Device: %s") % s->usrp->get_pp_string() << std::endl;
LOG_I(HW,"Device timestamp: %f...\n", s->usrp->get_time_now().get_real_secs());
device->trx_write_func = trx_usrp_write;
device->trx_read_func = trx_usrp_read;
s->sample_rate = openair0_cfg[0].sample_rate;
// 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;
recplay_state_t *recPlay=device->recplay_state;
if (recPlay != NULL) { // record mode
recPlay->maxSizeBytes=openair0_cfg[0].recplay_conf->u_sf_max *
(sizeof(iqrec_t)+BELL_LABS_IQ_BYTES_PER_SF);
recPlay->ms_sample = (iqrec_t *) malloc(recPlay->maxSizeBytes);
recPlay->currentPtr= (uint8_t *)recPlay->ms_sample;
if (recPlay->ms_sample == NULL) {
std::cerr<< "Memory allocation failed for subframe record or replay mode." << std::endl;
exit(-1);
}
}
return 0;
}
/*@}*/
}/* extern c */