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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 Daniel Elstner <daniel.kitta@gmail.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 <config.h> | |
21 | #include <glib.h> | |
22 | #include <libusb.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <libsigrok/libsigrok.h> | |
26 | #include "libsigrok-internal.h" | |
27 | #include "protocol.h" | |
28 | ||
29 | static const uint32_t scanopts[] = { | |
30 | SR_CONF_CONN, | |
31 | }; | |
32 | ||
33 | static const uint32_t devopts[] = { | |
34 | SR_CONF_LOGIC_ANALYZER, | |
35 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
36 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
37 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
38 | SR_CONF_EXTERNAL_CLOCK | SR_CONF_GET | SR_CONF_SET, | |
39 | SR_CONF_CLOCK_EDGE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
40 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
41 | SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
42 | SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
43 | }; | |
44 | ||
45 | static const int32_t trigger_matches[] = { | |
46 | SR_TRIGGER_ZERO, | |
47 | SR_TRIGGER_ONE, | |
48 | SR_TRIGGER_RISING, | |
49 | SR_TRIGGER_FALLING, | |
50 | }; | |
51 | ||
52 | /* The hardware supports more samplerates than these, but these are the | |
53 | * options hardcoded into the vendor's Windows GUI. | |
54 | */ | |
55 | static const uint64_t samplerates[] = { | |
56 | SR_MHZ(125), SR_MHZ(100), | |
57 | SR_MHZ(50), SR_MHZ(20), SR_MHZ(10), | |
58 | SR_MHZ(5), SR_MHZ(2), SR_MHZ(1), | |
59 | SR_KHZ(500), SR_KHZ(200), SR_KHZ(100), | |
60 | SR_KHZ(50), SR_KHZ(20), SR_KHZ(10), | |
61 | SR_KHZ(5), SR_KHZ(2), SR_KHZ(1), | |
62 | SR_HZ(500), SR_HZ(200), SR_HZ(100), | |
63 | }; | |
64 | ||
65 | /* Names assigned to available trigger sources. Indices must match | |
66 | * trigger_source enum values. | |
67 | */ | |
68 | static const char *const trigger_source_names[] = { "CH", "TRG" }; | |
69 | ||
70 | /* Names assigned to available trigger slope choices. Indices must | |
71 | * match the signal_edge enum values. | |
72 | */ | |
73 | static const char *const signal_edge_names[] = { "r", "f" }; | |
74 | ||
75 | SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info; | |
76 | static struct sr_dev_driver *const di = &sysclk_lwla_driver_info; | |
77 | ||
78 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) | |
79 | { | |
80 | return std_init(sr_ctx, di, LOG_PREFIX); | |
81 | } | |
82 | ||
83 | static struct sr_dev_inst *dev_inst_new(void) | |
84 | { | |
85 | struct sr_dev_inst *sdi; | |
86 | struct dev_context *devc; | |
87 | int i; | |
88 | char name[8]; | |
89 | ||
90 | /* Allocate memory for our private driver context. */ | |
91 | devc = g_malloc0(sizeof(struct dev_context)); | |
92 | ||
93 | /* Register the device with libsigrok. */ | |
94 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
95 | sdi->status = SR_ST_INACTIVE; | |
96 | sdi->vendor = g_strdup(VENDOR_NAME); | |
97 | sdi->model = g_strdup(MODEL_NAME); | |
98 | ||
99 | /* Enable all channels to match the default channel configuration. */ | |
100 | devc->channel_mask = ALL_CHANNELS_MASK; | |
101 | devc->samplerate = DEFAULT_SAMPLERATE; | |
102 | ||
103 | sdi->priv = devc; | |
104 | for (i = 0; i < NUM_CHANNELS; ++i) { | |
105 | /* The LWLA series simply number channels from CH1 to CHxx. */ | |
106 | g_snprintf(name, sizeof(name), "CH%d", i + 1); | |
107 | sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, name); | |
108 | } | |
109 | ||
110 | return sdi; | |
111 | } | |
112 | ||
113 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
114 | { | |
115 | GSList *usb_devices, *devices, *node; | |
116 | struct drv_context *drvc; | |
117 | struct sr_dev_inst *sdi; | |
118 | struct sr_usb_dev_inst *usb; | |
119 | struct sr_config *src; | |
120 | const char *conn; | |
121 | ||
122 | drvc = di->context; | |
123 | conn = USB_VID_PID; | |
124 | ||
125 | for (node = options; node != NULL; node = node->next) { | |
126 | src = node->data; | |
127 | if (src->key == SR_CONF_CONN) { | |
128 | conn = g_variant_get_string(src->data, NULL); | |
129 | break; | |
130 | } | |
131 | } | |
132 | usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
133 | devices = NULL; | |
134 | ||
135 | for (node = usb_devices; node != NULL; node = node->next) { | |
136 | usb = node->data; | |
137 | ||
138 | /* Create sigrok device instance. */ | |
139 | sdi = dev_inst_new(); | |
140 | if (!sdi) { | |
141 | sr_usb_dev_inst_free(usb); | |
142 | continue; | |
143 | } | |
144 | sdi->driver = di; | |
145 | sdi->inst_type = SR_INST_USB; | |
146 | sdi->conn = usb; | |
147 | ||
148 | /* Register device instance with driver. */ | |
149 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
150 | devices = g_slist_append(devices, sdi); | |
151 | } | |
152 | ||
153 | g_slist_free(usb_devices); | |
154 | ||
155 | return devices; | |
156 | } | |
157 | ||
158 | static GSList *dev_list(const struct sr_dev_driver *di) | |
159 | { | |
160 | struct drv_context *drvc; | |
161 | ||
162 | drvc = di->context; | |
163 | ||
164 | return drvc->instances; | |
165 | } | |
166 | ||
167 | static void clear_dev_context(void *priv) | |
168 | { | |
169 | struct dev_context *devc; | |
170 | ||
171 | devc = priv; | |
172 | ||
173 | sr_dbg("Device context cleared."); | |
174 | ||
175 | lwla_free_acquisition_state(devc->acquisition); | |
176 | g_free(devc); | |
177 | } | |
178 | ||
179 | static int dev_clear(const struct sr_dev_driver *di) | |
180 | { | |
181 | return std_dev_clear(di, &clear_dev_context); | |
182 | } | |
183 | ||
184 | static int dev_open(struct sr_dev_inst *sdi) | |
185 | { | |
186 | struct drv_context *drvc; | |
187 | struct sr_usb_dev_inst *usb; | |
188 | int ret; | |
189 | ||
190 | drvc = di->context; | |
191 | ||
192 | if (!drvc) { | |
193 | sr_err("Driver was not initialized."); | |
194 | return SR_ERR; | |
195 | } | |
196 | if (sdi->status != SR_ST_INACTIVE) { | |
197 | sr_err("Device already open."); | |
198 | return SR_ERR; | |
199 | } | |
200 | usb = sdi->conn; | |
201 | ||
202 | ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb); | |
203 | if (ret != SR_OK) | |
204 | return ret; | |
205 | ||
206 | ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
207 | if (ret < 0) { | |
208 | sr_err("Failed to claim interface: %s.", | |
209 | libusb_error_name(ret)); | |
210 | sr_usb_close(usb); | |
211 | return SR_ERR; | |
212 | } | |
213 | sdi->status = SR_ST_ACTIVE; | |
214 | ||
215 | ret = lwla_init_device(sdi); | |
216 | if (ret != SR_OK) { | |
217 | sr_usb_close(usb); | |
218 | sdi->status = SR_ST_INACTIVE; | |
219 | } | |
220 | return ret; | |
221 | } | |
222 | ||
223 | static int dev_close(struct sr_dev_inst *sdi) | |
224 | { | |
225 | struct sr_usb_dev_inst *usb; | |
226 | struct dev_context *devc; | |
227 | int ret; | |
228 | ||
229 | if (!di->context) { | |
230 | sr_err("Driver was not initialized."); | |
231 | return SR_ERR; | |
232 | } | |
233 | usb = sdi->conn; | |
234 | devc = sdi->priv; | |
235 | ||
236 | if (sdi->status == SR_ST_INACTIVE) | |
237 | return SR_OK; | |
238 | ||
239 | if (devc && devc->acquisition) { | |
240 | sr_err("Attempt to close device during acquisition."); | |
241 | return SR_ERR; | |
242 | } | |
243 | sdi->status = SR_ST_INACTIVE; | |
244 | ||
245 | /* Trigger download of the shutdown bitstream. */ | |
246 | ret = lwla_set_clock_config(sdi); | |
247 | if (ret != SR_OK) | |
248 | sr_err("Unable to shut down device."); | |
249 | ||
250 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
251 | sr_usb_close(usb); | |
252 | ||
253 | return ret; | |
254 | } | |
255 | ||
256 | static int cleanup(const struct sr_dev_driver *di) | |
257 | { | |
258 | return dev_clear(di); | |
259 | } | |
260 | ||
261 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
262 | const struct sr_channel_group *cg) | |
263 | { | |
264 | struct dev_context *devc; | |
265 | size_t idx; | |
266 | ||
267 | (void)cg; | |
268 | ||
269 | if (!sdi) | |
270 | return SR_ERR_ARG; | |
271 | ||
272 | devc = sdi->priv; | |
273 | ||
274 | switch (key) { | |
275 | case SR_CONF_SAMPLERATE: | |
276 | *data = g_variant_new_uint64(devc->samplerate); | |
277 | break; | |
278 | case SR_CONF_LIMIT_MSEC: | |
279 | *data = g_variant_new_uint64(devc->limit_msec); | |
280 | break; | |
281 | case SR_CONF_LIMIT_SAMPLES: | |
282 | *data = g_variant_new_uint64(devc->limit_samples); | |
283 | break; | |
284 | case SR_CONF_EXTERNAL_CLOCK: | |
285 | *data = g_variant_new_boolean(devc->cfg_clock_source | |
286 | == CLOCK_EXT_CLK); | |
287 | break; | |
288 | case SR_CONF_CLOCK_EDGE: | |
289 | idx = devc->cfg_clock_edge; | |
290 | if (idx >= ARRAY_SIZE(signal_edge_names)) | |
291 | return SR_ERR_BUG; | |
292 | *data = g_variant_new_string(signal_edge_names[idx]); | |
293 | break; | |
294 | case SR_CONF_TRIGGER_SOURCE: | |
295 | idx = devc->cfg_trigger_source; | |
296 | if (idx >= ARRAY_SIZE(trigger_source_names)) | |
297 | return SR_ERR_BUG; | |
298 | *data = g_variant_new_string(trigger_source_names[idx]); | |
299 | break; | |
300 | case SR_CONF_TRIGGER_SLOPE: | |
301 | idx = devc->cfg_trigger_slope; | |
302 | if (idx >= ARRAY_SIZE(signal_edge_names)) | |
303 | return SR_ERR_BUG; | |
304 | *data = g_variant_new_string(signal_edge_names[idx]); | |
305 | break; | |
306 | default: | |
307 | return SR_ERR_NA; | |
308 | } | |
309 | ||
310 | return SR_OK; | |
311 | } | |
312 | ||
313 | /* Helper for mapping a string-typed configuration value to an index | |
314 | * within a table of possible values. | |
315 | */ | |
316 | static int lookup_index(GVariant *value, const char *const *table, int len) | |
317 | { | |
318 | const char *entry; | |
319 | int i; | |
320 | ||
321 | entry = g_variant_get_string(value, NULL); | |
322 | if (!entry) | |
323 | return -1; | |
324 | ||
325 | /* Linear search is fine for very small tables. */ | |
326 | for (i = 0; i < len; ++i) { | |
327 | if (strcmp(entry, table[i]) == 0) | |
328 | return i; | |
329 | } | |
330 | return -1; | |
331 | } | |
332 | ||
333 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
334 | const struct sr_channel_group *cg) | |
335 | { | |
336 | uint64_t value; | |
337 | struct dev_context *devc; | |
338 | int idx; | |
339 | ||
340 | (void)cg; | |
341 | ||
342 | devc = sdi->priv; | |
343 | if (!devc) | |
344 | return SR_ERR_DEV_CLOSED; | |
345 | ||
346 | switch (key) { | |
347 | case SR_CONF_SAMPLERATE: | |
348 | value = g_variant_get_uint64(data); | |
349 | if (value < samplerates[ARRAY_SIZE(samplerates) - 1] | |
350 | || value > samplerates[0]) | |
351 | return SR_ERR_SAMPLERATE; | |
352 | devc->samplerate = value; | |
353 | break; | |
354 | case SR_CONF_LIMIT_MSEC: | |
355 | value = g_variant_get_uint64(data); | |
356 | if (value > MAX_LIMIT_MSEC) | |
357 | return SR_ERR_ARG; | |
358 | devc->limit_msec = value; | |
359 | break; | |
360 | case SR_CONF_LIMIT_SAMPLES: | |
361 | value = g_variant_get_uint64(data); | |
362 | if (value > MAX_LIMIT_SAMPLES) | |
363 | return SR_ERR_ARG; | |
364 | devc->limit_samples = value; | |
365 | break; | |
366 | case SR_CONF_EXTERNAL_CLOCK: | |
367 | devc->cfg_clock_source = (g_variant_get_boolean(data)) | |
368 | ? CLOCK_EXT_CLK : CLOCK_INTERNAL; | |
369 | break; | |
370 | case SR_CONF_CLOCK_EDGE: | |
371 | idx = lookup_index(data, signal_edge_names, | |
372 | ARRAY_SIZE(signal_edge_names)); | |
373 | if (idx < 0) | |
374 | return SR_ERR_ARG; | |
375 | devc->cfg_clock_edge = idx; | |
376 | break; | |
377 | case SR_CONF_TRIGGER_SOURCE: | |
378 | idx = lookup_index(data, trigger_source_names, | |
379 | ARRAY_SIZE(trigger_source_names)); | |
380 | if (idx < 0) | |
381 | return SR_ERR_ARG; | |
382 | devc->cfg_trigger_source = idx; | |
383 | break; | |
384 | case SR_CONF_TRIGGER_SLOPE: | |
385 | idx = lookup_index(data, signal_edge_names, | |
386 | ARRAY_SIZE(signal_edge_names)); | |
387 | if (idx < 0) | |
388 | return SR_ERR_ARG; | |
389 | devc->cfg_trigger_slope = idx; | |
390 | break; | |
391 | default: | |
392 | return SR_ERR_NA; | |
393 | } | |
394 | ||
395 | return SR_OK; | |
396 | } | |
397 | ||
398 | static int config_channel_set(const struct sr_dev_inst *sdi, | |
399 | struct sr_channel *ch, unsigned int changes) | |
400 | { | |
401 | uint64_t channel_bit; | |
402 | struct dev_context *devc; | |
403 | ||
404 | devc = sdi->priv; | |
405 | if (!devc) | |
406 | return SR_ERR_DEV_CLOSED; | |
407 | ||
408 | if (ch->index < 0 || ch->index >= NUM_CHANNELS) { | |
409 | sr_err("Channel index %d out of range.", ch->index); | |
410 | return SR_ERR_BUG; | |
411 | } | |
412 | channel_bit = (uint64_t)1 << ch->index; | |
413 | ||
414 | if ((changes & SR_CHANNEL_SET_ENABLED) != 0) { | |
415 | /* Enable or disable input channel for this channel. */ | |
416 | if (ch->enabled) | |
417 | devc->channel_mask |= channel_bit; | |
418 | else | |
419 | devc->channel_mask &= ~channel_bit; | |
420 | } | |
421 | ||
422 | return SR_OK; | |
423 | } | |
424 | ||
425 | static int prepare_trigger_masks(const struct sr_dev_inst *sdi) | |
426 | { | |
427 | uint64_t trigger_mask; | |
428 | uint64_t trigger_values; | |
429 | uint64_t trigger_edge_mask; | |
430 | uint64_t channel_bit; | |
431 | struct dev_context *devc; | |
432 | struct sr_trigger *trigger; | |
433 | struct sr_trigger_stage *stage; | |
434 | struct sr_trigger_match *match; | |
435 | const GSList *node; | |
436 | ||
437 | devc = sdi->priv; | |
438 | ||
439 | trigger = sr_session_trigger_get(sdi->session); | |
440 | if (!trigger || !trigger->stages) | |
441 | return SR_OK; | |
442 | ||
443 | if (trigger->stages->next) { | |
444 | sr_err("This device only supports 1 trigger stage."); | |
445 | return SR_ERR_ARG; | |
446 | } | |
447 | stage = trigger->stages->data; | |
448 | ||
449 | trigger_mask = 0; | |
450 | trigger_values = 0; | |
451 | trigger_edge_mask = 0; | |
452 | ||
453 | for (node = stage->matches; node; node = node->next) { | |
454 | match = node->data; | |
455 | ||
456 | if (!match->channel->enabled) | |
457 | continue; /* ignore disabled channel */ | |
458 | ||
459 | channel_bit = (uint64_t)1 << match->channel->index; | |
460 | trigger_mask |= channel_bit; | |
461 | ||
462 | switch (match->match) { | |
463 | case SR_TRIGGER_ZERO: | |
464 | break; | |
465 | case SR_TRIGGER_ONE: | |
466 | trigger_values |= channel_bit; | |
467 | break; | |
468 | case SR_TRIGGER_RISING: | |
469 | trigger_values |= channel_bit; | |
470 | /* Fall through for edge mask. */ | |
471 | case SR_TRIGGER_FALLING: | |
472 | trigger_edge_mask |= channel_bit; | |
473 | break; | |
474 | default: | |
475 | sr_err("Unsupported trigger match for CH%d.", | |
476 | match->channel->index + 1); | |
477 | return SR_ERR_ARG; | |
478 | } | |
479 | } | |
480 | devc->trigger_mask = trigger_mask; | |
481 | devc->trigger_values = trigger_values; | |
482 | devc->trigger_edge_mask = trigger_edge_mask; | |
483 | ||
484 | return SR_OK; | |
485 | } | |
486 | ||
487 | static int config_commit(const struct sr_dev_inst *sdi) | |
488 | { | |
489 | struct dev_context *devc; | |
490 | int rc; | |
491 | ||
492 | if (sdi->status != SR_ST_ACTIVE) | |
493 | return SR_ERR_DEV_CLOSED; | |
494 | ||
495 | devc = sdi->priv; | |
496 | if (devc->acquisition) { | |
497 | sr_err("Acquisition still in progress?"); | |
498 | return SR_ERR; | |
499 | } | |
500 | rc = prepare_trigger_masks(sdi); | |
501 | if (rc != SR_OK) | |
502 | return rc; | |
503 | ||
504 | return lwla_set_clock_config(sdi); | |
505 | } | |
506 | ||
507 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
508 | const struct sr_channel_group *cg) | |
509 | { | |
510 | GVariant *gvar; | |
511 | GVariantBuilder gvb; | |
512 | ||
513 | (void)sdi; | |
514 | (void)cg; | |
515 | ||
516 | switch (key) { | |
517 | case SR_CONF_SCAN_OPTIONS: | |
518 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
519 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
520 | break; | |
521 | case SR_CONF_DEVICE_OPTIONS: | |
522 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
523 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
524 | break; | |
525 | case SR_CONF_SAMPLERATE: | |
526 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
527 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
528 | samplerates, ARRAY_SIZE(samplerates), | |
529 | sizeof(uint64_t)); | |
530 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
531 | *data = g_variant_builder_end(&gvb); | |
532 | break; | |
533 | case SR_CONF_TRIGGER_MATCH: | |
534 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
535 | trigger_matches, ARRAY_SIZE(trigger_matches), | |
536 | sizeof(int32_t)); | |
537 | break; | |
538 | case SR_CONF_TRIGGER_SOURCE: | |
539 | *data = g_variant_new_strv(trigger_source_names, | |
540 | ARRAY_SIZE(trigger_source_names)); | |
541 | break; | |
542 | case SR_CONF_TRIGGER_SLOPE: | |
543 | case SR_CONF_CLOCK_EDGE: | |
544 | *data = g_variant_new_strv(signal_edge_names, | |
545 | ARRAY_SIZE(signal_edge_names)); | |
546 | break; | |
547 | default: | |
548 | return SR_ERR_NA; | |
549 | } | |
550 | ||
551 | return SR_OK; | |
552 | } | |
553 | ||
554 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
555 | { | |
556 | struct drv_context *drvc; | |
557 | struct dev_context *devc; | |
558 | struct acquisition_state *acq; | |
559 | int ret; | |
560 | ||
561 | (void)cb_data; | |
562 | ||
563 | if (sdi->status != SR_ST_ACTIVE) | |
564 | return SR_ERR_DEV_CLOSED; | |
565 | ||
566 | devc = sdi->priv; | |
567 | drvc = di->context; | |
568 | ||
569 | if (devc->acquisition) { | |
570 | sr_err("Acquisition still in progress?"); | |
571 | return SR_ERR; | |
572 | } | |
573 | acq = lwla_alloc_acquisition_state(); | |
574 | if (!acq) | |
575 | return SR_ERR_MALLOC; | |
576 | ||
577 | devc->cancel_requested = FALSE; | |
578 | devc->stopping_in_progress = FALSE; | |
579 | devc->transfer_error = FALSE; | |
580 | ||
581 | sr_info("Starting acquisition."); | |
582 | ||
583 | devc->acquisition = acq; | |
584 | ret = lwla_setup_acquisition(sdi); | |
585 | if (ret != SR_OK) { | |
586 | sr_err("Failed to set up acquisition."); | |
587 | devc->acquisition = NULL; | |
588 | lwla_free_acquisition_state(acq); | |
589 | return ret; | |
590 | } | |
591 | ||
592 | ret = lwla_start_acquisition(sdi); | |
593 | if (ret != SR_OK) { | |
594 | sr_err("Failed to start acquisition."); | |
595 | devc->acquisition = NULL; | |
596 | lwla_free_acquisition_state(acq); | |
597 | return ret; | |
598 | } | |
599 | usb_source_add(sdi->session, drvc->sr_ctx, 100, &lwla_receive_data, | |
600 | (struct sr_dev_inst *)sdi); | |
601 | ||
602 | sr_info("Waiting for data."); | |
603 | ||
604 | /* Send header packet to the session bus. */ | |
605 | std_session_send_df_header(sdi, LOG_PREFIX); | |
606 | ||
607 | return SR_OK; | |
608 | } | |
609 | ||
610 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
611 | { | |
612 | struct dev_context *devc; | |
613 | ||
614 | (void)cb_data; | |
615 | devc = sdi->priv; | |
616 | ||
617 | if (sdi->status != SR_ST_ACTIVE) | |
618 | return SR_ERR_DEV_CLOSED; | |
619 | ||
620 | if (devc->acquisition && !devc->cancel_requested) { | |
621 | devc->cancel_requested = TRUE; | |
622 | sr_dbg("Stopping acquisition."); | |
623 | } | |
624 | return SR_OK; | |
625 | } | |
626 | ||
627 | SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info = { | |
628 | .name = "sysclk-lwla", | |
629 | .longname = "SysClk LWLA series", | |
630 | .api_version = 1, | |
631 | .init = init, | |
632 | .cleanup = cleanup, | |
633 | .scan = scan, | |
634 | .dev_list = dev_list, | |
635 | .dev_clear = dev_clear, | |
636 | .config_get = config_get, | |
637 | .config_set = config_set, | |
638 | .config_channel_set = config_channel_set, | |
639 | .config_commit = config_commit, | |
640 | .config_list = config_list, | |
641 | .dev_open = dev_open, | |
642 | .dev_close = dev_close, | |
643 | .dev_acquisition_start = dev_acquisition_start, | |
644 | .dev_acquisition_stop = dev_acquisition_stop, | |
645 | .context = NULL, | |
646 | }; |