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zeroplus.c
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1 /*
2  * This file is part of the sigrok project.
3  *
4  * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
5  *
6  * This program is free software: you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation, either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program. If not, see <http://www.gnu.org/licenses/>.
18  */
19 
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <string.h>
23 #include <sys/time.h>
24 #include <inttypes.h>
25 #include <glib.h>
26 #include <libusb.h>
27 #include "config.h"
28 #include "sigrok.h"
29 #include "sigrok-internal.h"
30 #include "analyzer.h"
31 
32 #define USB_VENDOR 0x0c12
33 
34 #define VENDOR_NAME "ZEROPLUS"
35 #define MODEL_NAME "Logic Cube LAP-C"
36 #define MODEL_VERSION NULL
37 
38 #define NUM_PROBES 16
39 #define USB_INTERFACE 0
40 #define USB_CONFIGURATION 1
41 #define NUM_TRIGGER_STAGES 4
42 #define TRIGGER_TYPES "01"
43 
44 #define PACKET_SIZE 2048 /* ?? */
45 
46 typedef struct {
47  unsigned short pid;
48  char model_name[64];
49  unsigned int channels;
50  unsigned int sample_depth; /* In Ksamples/channel */
51  unsigned int max_sampling_freq;
52 } model_t;
53 
54 /*
55  * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the
56  * same 128K sample depth.
57  */
58 static model_t zeroplus_models[] = {
59  {0x7009, "LAP-C(16064)", 16, 64, 100},
60  {0x700A, "LAP-C(16128)", 16, 128, 200},
61  {0x700B, "LAP-C(32128)", 32, 128, 200},
62  {0x700C, "LAP-C(321000)", 32, 1024, 200},
63  {0x700D, "LAP-C(322000)", 32, 2048, 200},
64  {0x700E, "LAP-C(16032)", 16, 32, 100},
65  {0x7016, "LAP-C(162000)", 16, 2048, 200},
66 };
67 
68 static int hwcaps[] = {
73 
74  /* These are really implemented in the driver, not the hardware. */
76  0,
77 };
78 
79 /*
80  * ZEROPLUS LAP-C (16032) numbers the 16 probes A0-A7 and B0-B7.
81  * We currently ignore other untested/unsupported devices here.
82  */
83 static const char *probe_names[NUM_PROBES + 1] = {
84  "A0",
85  "A1",
86  "A2",
87  "A3",
88  "A4",
89  "A5",
90  "A6",
91  "A7",
92  "B0",
93  "B1",
94  "B2",
95  "B3",
96  "B4",
97  "B5",
98  "B6",
99  "B7",
100  NULL,
101 };
102 
103 /* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */
104 static GSList *dev_insts = NULL;
105 
106 static libusb_context *usb_context = NULL;
107 
108 /*
109  * The hardware supports more samplerates than these, but these are the
110  * options hardcoded into the vendor's Windows GUI.
111  */
112 
113 /*
114  * TODO: We shouldn't support 150MHz and 200MHz on devices that don't go up
115  * that high.
116  */
117 static uint64_t supported_samplerates[] = {
118  SR_HZ(100),
119  SR_HZ(500),
120  SR_KHZ(1),
121  SR_KHZ(5),
122  SR_KHZ(25),
123  SR_KHZ(50),
124  SR_KHZ(100),
125  SR_KHZ(200),
126  SR_KHZ(400),
127  SR_KHZ(800),
128  SR_MHZ(1),
129  SR_MHZ(10),
130  SR_MHZ(25),
131  SR_MHZ(50),
132  SR_MHZ(80),
133  SR_MHZ(100),
134  SR_MHZ(150),
135  SR_MHZ(200),
136  0,
137 };
138 
139 static struct sr_samplerates samplerates = {
140  0,
141  0,
142  0,
143  supported_samplerates,
144 };
145 
146 /* Private, per-device-instance driver context. */
147 struct context {
148  uint64_t cur_samplerate;
149  uint64_t limit_samples;
150  int num_channels; /* TODO: This isn't initialized before it's needed :( */
151  uint64_t memory_size;
152  uint8_t probe_mask;
155  // uint8_t trigger_buffer[NUM_TRIGGER_STAGES];
156 
157  struct sr_usb_dev_inst *usb;
158 };
159 
160 static int hw_dev_config_set(int dev_index, int hwcap, void *value);
161 
162 static unsigned int get_memory_size(int type)
163 {
164  if (type == MEMORY_SIZE_8K)
165  return 8 * 1024;
166  else if (type == MEMORY_SIZE_64K)
167  return 64 * 1024;
168  else if (type == MEMORY_SIZE_128K)
169  return 128 * 1024;
170  else if (type == MEMORY_SIZE_512K)
171  return 512 * 1024;
172  else
173  return 0;
174 }
175 
176 static int opendev4(struct sr_dev_inst **sdi, libusb_device *dev,
177  struct libusb_device_descriptor *des)
178 {
179  struct context *ctx;
180  unsigned int i;
181  int ret;
182 
183  /* Note: sdi is non-NULL, the caller already checked this. */
184 
185  if (!(ctx = (*sdi)->priv)) {
186  sr_err("zp: %s: (*sdi)->priv was NULL", __func__);
187  return -1;
188  }
189 
190  if ((ret = libusb_get_device_descriptor(dev, des))) {
191  sr_err("zp: failed to get device descriptor: %d", ret);
192  return -1;
193  }
194 
195  if (des->idVendor != USB_VENDOR)
196  return 0;
197 
198  if (libusb_get_bus_number(dev) == ctx->usb->bus
199  && libusb_get_device_address(dev) == ctx->usb->address) {
200 
201  for (i = 0; i < ARRAY_SIZE(zeroplus_models); i++) {
202  if (!(des->idProduct == zeroplus_models[i].pid))
203  continue;
204 
205  sr_info("zp: Found ZEROPLUS device 0x%04x (%s)",
206  des->idProduct, zeroplus_models[i].model_name);
207  ctx->num_channels = zeroplus_models[i].channels;
208  ctx->memory_size = zeroplus_models[i].sample_depth * 1024;
209  break;
210  }
211 
212  if (ctx->num_channels == 0) {
213  sr_err("zp: Unknown ZEROPLUS device 0x%04x",
214  des->idProduct);
215  return -2;
216  }
217 
218  /* Found it. */
219  if (!(ret = libusb_open(dev, &(ctx->usb->devhdl)))) {
220  (*sdi)->status = SR_ST_ACTIVE;
221  sr_info("zp: opened device %d on %d.%d interface %d",
222  (*sdi)->index, ctx->usb->bus,
223  ctx->usb->address, USB_INTERFACE);
224  } else {
225  sr_err("zp: failed to open device: %d", ret);
226  *sdi = NULL;
227  }
228  }
229 
230  return 0;
231 }
232 
233 static struct sr_dev_inst *zp_open_dev(int dev_index)
234 {
235  struct sr_dev_inst *sdi;
236  libusb_device **devlist;
237  struct libusb_device_descriptor des;
238  int i;
239 
240  if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
241  return NULL;
242 
243  libusb_get_device_list(usb_context, &devlist);
244  if (sdi->status == SR_ST_INACTIVE) {
245  /* Find the device by vendor, product, bus and address. */
246  libusb_get_device_list(usb_context, &devlist);
247  for (i = 0; devlist[i]; i++) {
248  /* TODO: Error handling. */
249  opendev4(&sdi, devlist[i], &des);
250  }
251  } else {
252  /* Status must be SR_ST_ACTIVE, i.e. already in use... */
253  sdi = NULL;
254  }
255  libusb_free_device_list(devlist, 1);
256 
257  if (sdi && sdi->status != SR_ST_ACTIVE)
258  sdi = NULL;
259 
260  return sdi;
261 }
262 
263 static void close_dev(struct sr_dev_inst *sdi)
264 {
265  struct context *ctx;
266 
267  if (!(ctx = sdi->priv)) {
268  sr_err("zp: %s: sdi->priv was NULL", __func__);
269  return; /* FIXME */
270  }
271 
272  if (!ctx->usb->devhdl)
273  return;
274 
275  sr_info("zp: closing device %d on %d.%d interface %d", sdi->index,
276  ctx->usb->bus, ctx->usb->address, USB_INTERFACE);
277  libusb_release_interface(ctx->usb->devhdl, USB_INTERFACE);
278  libusb_reset_device(ctx->usb->devhdl);
279  libusb_close(ctx->usb->devhdl);
280  ctx->usb->devhdl = NULL;
281  /* TODO: Call libusb_exit() here or only in hw_cleanup()? */
282  sdi->status = SR_ST_INACTIVE;
283 }
284 
285 static int configure_probes(struct sr_dev_inst *sdi, GSList *probes)
286 {
287  struct context *ctx;
288  struct sr_probe *probe;
289  GSList *l;
290  int probe_bit, stage, i;
291  char *tc;
292 
293  /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
294  ctx = sdi->priv;
295 
296  ctx->probe_mask = 0;
297  for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
298  ctx->trigger_mask[i] = 0;
299  ctx->trigger_value[i] = 0;
300  }
301 
302  stage = -1;
303  for (l = probes; l; l = l->next) {
304  probe = (struct sr_probe *)l->data;
305  if (probe->enabled == FALSE)
306  continue;
307  probe_bit = 1 << (probe->index - 1);
308  ctx->probe_mask |= probe_bit;
309 
310  if (probe->trigger) {
311  stage = 0;
312  for (tc = probe->trigger; *tc; tc++) {
313  ctx->trigger_mask[stage] |= probe_bit;
314  if (*tc == '1')
315  ctx->trigger_value[stage] |= probe_bit;
316  stage++;
317  if (stage > NUM_TRIGGER_STAGES)
318  return SR_ERR;
319  }
320  }
321  }
322 
323  return SR_OK;
324 }
325 
326 /*
327  * API callbacks
328  */
329 
330 static int hw_init(const char *devinfo)
331 {
332  struct sr_dev_inst *sdi;
333  struct libusb_device_descriptor des;
334  libusb_device **devlist;
335  int ret, devcnt, i;
336  struct context *ctx;
337 
338  /* Avoid compiler warnings. */
339  (void)devinfo;
340 
341  /* Allocate memory for our private driver context. */
342  if (!(ctx = g_try_malloc(sizeof(struct context)))) {
343  sr_err("zp: %s: ctx malloc failed", __func__);
344  return 0;
345  }
346 
347  /* Set some sane defaults. */
348  ctx->cur_samplerate = 0;
349  ctx->limit_samples = 0;
350  /* TODO: num_channels isn't initialized before it's needed :( */
351  ctx->num_channels = NUM_PROBES;
352  ctx->memory_size = 0;
353  ctx->probe_mask = 0;
354  memset(ctx->trigger_mask, 0, NUM_TRIGGER_STAGES);
355  memset(ctx->trigger_value, 0, NUM_TRIGGER_STAGES);
356  // memset(ctx->trigger_buffer, 0, NUM_TRIGGER_STAGES);
357 
358  if (libusb_init(&usb_context) != 0) {
359  sr_err("zp: Failed to initialize USB.");
360  return 0;
361  }
362 
363  /* Find all ZEROPLUS analyzers and add them to device list. */
364  devcnt = 0;
365  libusb_get_device_list(usb_context, &devlist); /* TODO: Errors. */
366 
367  for (i = 0; devlist[i]; i++) {
368  ret = libusb_get_device_descriptor(devlist[i], &des);
369  if (ret != 0) {
370  sr_err("zp: failed to get device descriptor: %d", ret);
371  continue;
372  }
373 
374  if (des.idVendor == USB_VENDOR) {
375  /*
376  * Definitely a ZEROPLUS.
377  * TODO: Any way to detect specific model/version in
378  * the ZEROPLUS range?
379  */
380  /* Register the device with libsigrok. */
381  if (!(sdi = sr_dev_inst_new(devcnt,
384  sr_err("zp: %s: sr_dev_inst_new failed",
385  __func__);
386  return 0;
387  }
388 
389  sdi->priv = ctx;
390 
391  dev_insts =
392  g_slist_append(dev_insts, sdi);
393  ctx->usb = sr_usb_dev_inst_new(
394  libusb_get_bus_number(devlist[i]),
395  libusb_get_device_address(devlist[i]), NULL);
396  devcnt++;
397  }
398  }
399  libusb_free_device_list(devlist, 1);
400 
401  return devcnt;
402 }
403 
404 static int hw_dev_open(int dev_index)
405 {
406  struct sr_dev_inst *sdi;
407  struct context *ctx;
408  int ret;
409 
410  if (!(sdi = zp_open_dev(dev_index))) {
411  sr_err("zp: unable to open device");
412  return SR_ERR;
413  }
414 
415  /* TODO: Note: sdi is retrieved in zp_open_dev(). */
416 
417  if (!(ctx = sdi->priv)) {
418  sr_err("zp: %s: sdi->priv was NULL", __func__);
419  return SR_ERR_ARG;
420  }
421 
422  ret = libusb_set_configuration(ctx->usb->devhdl, USB_CONFIGURATION);
423  if (ret < 0) {
424  sr_err("zp: Unable to set USB configuration %d: %d",
425  USB_CONFIGURATION, ret);
426  return SR_ERR;
427  }
428 
429  ret = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE);
430  if (ret != 0) {
431  sr_err("zp: Unable to claim interface: %d", ret);
432  return SR_ERR;
433  }
434 
435  analyzer_reset(ctx->usb->devhdl);
436  analyzer_initialize(ctx->usb->devhdl);
437 
439  // analyzer_set_freq(g_freq, g_freq_scale);
441  // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
442  // * get_memory_size(g_memory_size)) / 100) >> 2);
444  (100 * get_memory_size(MEMORY_SIZE_512K) / 100) >> 2);
445 
446 #if 0
447  if (g_double_mode == 1)
449  else if (g_compression == 1)
451  else
452 #endif
454 
455  if (ctx->cur_samplerate == 0) {
456  /* Samplerate hasn't been set. Default to the slowest one. */
457  if (hw_dev_config_set(dev_index, SR_HWCAP_SAMPLERATE,
458  &samplerates.list[0]) == SR_ERR)
459  return SR_ERR;
460  }
461 
462  return SR_OK;
463 }
464 
465 static int hw_dev_close(int dev_index)
466 {
467  struct sr_dev_inst *sdi;
468 
469  if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
470  sr_err("zp: %s: sdi was NULL", __func__);
471  return SR_ERR; /* TODO: SR_ERR_ARG? */
472  }
473 
474  /* TODO */
475  close_dev(sdi);
476 
477  return SR_OK;
478 }
479 
480 static int hw_cleanup(void)
481 {
482  GSList *l;
483  struct sr_dev_inst *sdi;
484 
485  for (l = dev_insts; l; l = l->next) {
486  sdi = l->data;
487  /* Properly close all devices... */
488  close_dev(sdi);
489  /* ...and free all their memory. */
490  sr_dev_inst_free(sdi);
491  }
492  g_slist_free(dev_insts);
493  dev_insts = NULL;
494 
495  if (usb_context)
496  libusb_exit(usb_context);
497  usb_context = NULL;
498 
499  return SR_OK;
500 }
501 
502 static void *hw_dev_info_get(int dev_index, int dev_info_id)
503 {
504  struct sr_dev_inst *sdi;
505  struct context *ctx;
506  void *info;
507 
508  if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
509  sr_err("zp: %s: sdi was NULL", __func__);
510  return NULL;
511  }
512 
513  if (!(ctx = sdi->priv)) {
514  sr_err("zp: %s: sdi->priv was NULL", __func__);
515  return NULL;
516  }
517 
518  sr_spew("zp: %s: dev_index %d, dev_info_id %d.", __func__,
519  dev_index, dev_info_id);
520 
521  switch (dev_info_id) {
522  case SR_DI_INST:
523  info = sdi;
524  sr_spew("zp: %s: Returning sdi.", __func__);
525  break;
526  case SR_DI_NUM_PROBES:
527  info = GINT_TO_POINTER(ctx->num_channels);
528  sr_spew("zp: %s: Returning number of probes: %d.", __func__,
529  NUM_PROBES);
530  break;
531  case SR_DI_PROBE_NAMES:
532  info = probe_names;
533  sr_spew("zp: %s: Returning probenames.", __func__);
534  break;
535  case SR_DI_SAMPLERATES:
536  info = &samplerates;
537  sr_spew("zp: %s: Returning samplerates.", __func__);
538  break;
539  case SR_DI_TRIGGER_TYPES:
540  info = TRIGGER_TYPES;
541  sr_spew("zp: %s: Returning triggertypes: %s.", __func__, info);
542  break;
544  info = &ctx->cur_samplerate;
545  sr_spew("zp: %s: Returning samplerate: %" PRIu64 "Hz.",
546  __func__, ctx->cur_samplerate);
547  break;
548  default:
549  /* Unknown device info ID, return NULL. */
550  sr_err("zp: %s: Unknown device info ID", __func__);
551  info = NULL;
552  break;
553  }
554 
555  return info;
556 }
557 
558 static int hw_dev_status_get(int dev_index)
559 {
560  struct sr_dev_inst *sdi;
561 
562  sdi = sr_dev_inst_get(dev_insts, dev_index);
563  if (sdi)
564  return sdi->status;
565  else
566  return SR_ST_NOT_FOUND;
567 }
568 
569 static int *hw_hwcap_get_all(void)
570 {
571  return hwcaps;
572 }
573 
574 static int set_samplerate(struct sr_dev_inst *sdi, uint64_t samplerate)
575 {
576  struct context *ctx;
577 
578  if (!sdi) {
579  sr_err("zp: %s: sdi was NULL", __func__);
580  return SR_ERR_ARG;
581  }
582 
583  if (!(ctx = sdi->priv)) {
584  sr_err("zp: %s: sdi->priv was NULL", __func__);
585  return SR_ERR_ARG;
586  }
587 
588  sr_info("zp: Setting samplerate to %" PRIu64 "Hz.", samplerate);
589 
590  if (samplerate > SR_MHZ(1))
591  analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
592  else if (samplerate > SR_KHZ(1))
593  analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
594  else
595  analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
596 
597  ctx->cur_samplerate = samplerate;
598 
599  return SR_OK;
600 }
601 
602 static int hw_dev_config_set(int dev_index, int hwcap, void *value)
603 {
604  struct sr_dev_inst *sdi;
605  struct context *ctx;
606 
607  if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
608  sr_err("zp: %s: sdi was NULL", __func__);
609  return SR_ERR;
610  }
611 
612  if (!(ctx = sdi->priv)) {
613  sr_err("zp: %s: sdi->priv was NULL", __func__);
614  return SR_ERR_ARG;
615  }
616 
617  switch (hwcap) {
618  case SR_HWCAP_SAMPLERATE:
619  return set_samplerate(sdi, *(uint64_t *)value);
621  return configure_probes(sdi, (GSList *)value);
623  ctx->limit_samples = *(uint64_t *)value;
624  return SR_OK;
625  default:
626  return SR_ERR;
627  }
628 }
629 
630 static int hw_dev_acquisition_start(int dev_index, void *cb_data)
631 {
632  struct sr_dev_inst *sdi;
633  struct sr_datafeed_packet packet;
634  struct sr_datafeed_logic logic;
635  struct sr_datafeed_header header;
636  uint64_t samples_read;
637  int res;
638  unsigned int packet_num;
639  unsigned char *buf;
640  struct context *ctx;
641 
642  if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
643  sr_err("zp: %s: sdi was NULL", __func__);
644  return SR_ERR;
645  }
646 
647  if (!(ctx = sdi->priv)) {
648  sr_err("zp: %s: sdi->priv was NULL", __func__);
649  return SR_ERR_ARG;
650  }
651 
652  /* push configured settings to device */
653  analyzer_configure(ctx->usb->devhdl);
654 
655  analyzer_start(ctx->usb->devhdl);
656  sr_info("zp: Waiting for data");
657  analyzer_wait_data(ctx->usb->devhdl);
658 
659  sr_info("zp: Stop address = 0x%x",
660  analyzer_get_stop_address(ctx->usb->devhdl));
661  sr_info("zp: Now address = 0x%x",
662  analyzer_get_now_address(ctx->usb->devhdl));
663  sr_info("zp: Trigger address = 0x%x",
664  analyzer_get_trigger_address(ctx->usb->devhdl));
665 
666  packet.type = SR_DF_HEADER;
667  packet.payload = &header;
668  header.feed_version = 1;
669  gettimeofday(&header.starttime, NULL);
670  header.samplerate = ctx->cur_samplerate;
671  header.num_logic_probes = ctx->num_channels;
672  sr_session_send(cb_data, &packet);
673 
674  if (!(buf = g_try_malloc(PACKET_SIZE))) {
675  sr_err("zp: %s: buf malloc failed", __func__);
676  return SR_ERR_MALLOC;
677  }
678 
679  samples_read = 0;
680  analyzer_read_start(ctx->usb->devhdl);
681  /* Send the incoming transfer to the session bus. */
682  for (packet_num = 0; packet_num < (ctx->memory_size * 4 / PACKET_SIZE);
683  packet_num++) {
684  res = analyzer_read_data(ctx->usb->devhdl, buf, PACKET_SIZE);
685  sr_info("zp: Tried to read %llx bytes, actually read %x bytes",
686  PACKET_SIZE, res);
687 
688  packet.type = SR_DF_LOGIC;
689  packet.payload = &logic;
690  logic.length = PACKET_SIZE;
691  logic.unitsize = 4;
692  logic.data = buf;
693  sr_session_send(cb_data, &packet);
694  samples_read += res / 4;
695  }
696  analyzer_read_stop(ctx->usb->devhdl);
697  g_free(buf);
698 
699  packet.type = SR_DF_END;
700  sr_session_send(cb_data, &packet);
701 
702  return SR_OK;
703 }
704 
705 /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
706 static int hw_dev_acquisition_stop(int dev_index, void *cb_data)
707 {
708  struct sr_datafeed_packet packet;
709  struct sr_dev_inst *sdi;
710  struct context *ctx;
711 
712  packet.type = SR_DF_END;
713  sr_session_send(cb_data, &packet);
714 
715  if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
716  sr_err("zp: %s: sdi was NULL", __func__);
717  return SR_ERR_BUG;
718  }
719 
720  if (!(ctx = sdi->priv)) {
721  sr_err("zp: %s: sdi->priv was NULL", __func__);
722  return SR_ERR_BUG;
723  }
724 
725  analyzer_reset(ctx->usb->devhdl);
726  /* TODO: Need to cancel and free any queued up transfers. */
727 
728  return SR_OK;
729 }
730 
732  .name = "zeroplus-logic-cube",
733  .longname = "ZEROPLUS Logic Cube LAP-C series",
734  .api_version = 1,
735  .init = hw_init,
736  .cleanup = hw_cleanup,
737  .dev_open = hw_dev_open,
738  .dev_close = hw_dev_close,
739  .dev_info_get = hw_dev_info_get,
740  .dev_status_get = hw_dev_status_get,
741  .hwcap_get_all = hw_hwcap_get_all,
742  .dev_config_set = hw_dev_config_set,
743  .dev_acquisition_start = hw_dev_acquisition_start,
744  .dev_acquisition_stop = hw_dev_acquisition_stop,
745 };