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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 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 <string.h> | |
21 | #include "protocol.h" | |
22 | ||
23 | #define USB_CONN "1041.8101" | |
24 | #define VENDOR "Kecheng" | |
25 | #define USB_INTERFACE 0 | |
26 | ||
27 | static const uint32_t devopts[] = { | |
28 | SR_CONF_SOUNDLEVELMETER, | |
29 | SR_CONF_CONTINUOUS, | |
30 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
31 | SR_CONF_SAMPLE_INTERVAL | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
32 | SR_CONF_DATALOG | SR_CONF_GET, | |
33 | SR_CONF_SPL_WEIGHT_FREQ | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
34 | SR_CONF_SPL_WEIGHT_TIME | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
35 | SR_CONF_DATA_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
36 | }; | |
37 | ||
38 | SR_PRIV const uint64_t kecheng_kc_330b_sample_intervals[][2] = { | |
39 | { 1, 8 }, | |
40 | { 1, 2 }, | |
41 | { 1, 1 }, | |
42 | { 2, 1 }, | |
43 | { 5, 1 }, | |
44 | { 10, 1 }, | |
45 | { 60, 1 }, | |
46 | }; | |
47 | ||
48 | static const char *weight_freq[] = { | |
49 | "A", | |
50 | "C", | |
51 | }; | |
52 | ||
53 | static const char *weight_time[] = { | |
54 | "F", | |
55 | "S", | |
56 | }; | |
57 | ||
58 | static const char *data_sources[] = { | |
59 | "Live", | |
60 | "Memory", | |
61 | }; | |
62 | ||
63 | SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info; | |
64 | ||
65 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) | |
66 | { | |
67 | return std_init(sr_ctx, di, LOG_PREFIX); | |
68 | } | |
69 | ||
70 | static int scan_kecheng(struct sr_dev_driver *di, | |
71 | struct sr_usb_dev_inst *usb, char **model) | |
72 | { | |
73 | struct drv_context *drvc; | |
74 | int len, ret; | |
75 | unsigned char cmd, buf[32]; | |
76 | ||
77 | drvc = di->context; | |
78 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) | |
79 | return SR_ERR; | |
80 | ||
81 | cmd = CMD_IDENTIFY; | |
82 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &cmd, 1, &len, 5); | |
83 | if (ret != 0) { | |
84 | libusb_close(usb->devhdl); | |
85 | sr_dbg("Failed to send Identify command: %s", libusb_error_name(ret)); | |
86 | return SR_ERR; | |
87 | } | |
88 | ||
89 | ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 32, &len, 10); | |
90 | if (ret != 0) { | |
91 | libusb_close(usb->devhdl); | |
92 | sr_dbg("Failed to receive response: %s", libusb_error_name(ret)); | |
93 | return SR_ERR; | |
94 | } | |
95 | ||
96 | libusb_close(usb->devhdl); | |
97 | usb->devhdl = NULL; | |
98 | ||
99 | if (len < 2 || buf[0] != (CMD_IDENTIFY | 0x80) || buf[1] > 30) { | |
100 | sr_dbg("Invalid response to Identify command"); | |
101 | return SR_ERR; | |
102 | } | |
103 | ||
104 | buf[buf[1] + 2] = '\x0'; | |
105 | *model = g_strndup((const gchar *)buf + 2, 30); | |
106 | ||
107 | return SR_OK; | |
108 | } | |
109 | ||
110 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
111 | { | |
112 | struct drv_context *drvc; | |
113 | struct dev_context *devc; | |
114 | struct sr_dev_inst *sdi; | |
115 | GSList *usb_devices, *devices, *l; | |
116 | char *model; | |
117 | ||
118 | (void)options; | |
119 | ||
120 | drvc = di->context; | |
121 | drvc->instances = NULL; | |
122 | ||
123 | devices = NULL; | |
124 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_CONN))) { | |
125 | /* We have a list of sr_usb_dev_inst matching the connection | |
126 | * string. Wrap them in sr_dev_inst and we're done. */ | |
127 | for (l = usb_devices; l; l = l->next) { | |
128 | if (scan_kecheng(di, l->data, &model) != SR_OK) | |
129 | continue; | |
130 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
131 | sdi->status = SR_ST_INACTIVE; | |
132 | sdi->vendor = g_strdup(VENDOR); | |
133 | sdi->model = model; /* Already g_strndup()'d. */ | |
134 | sdi->driver = di; | |
135 | sdi->inst_type = SR_INST_USB; | |
136 | sdi->conn = l->data; | |
137 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "SPL"); | |
138 | devc = g_malloc0(sizeof(struct dev_context)); | |
139 | sdi->priv = devc; | |
140 | devc->limit_samples = 0; | |
141 | /* The protocol provides no way to read the current | |
142 | * settings, so we'll enforce these. */ | |
143 | devc->sample_interval = DEFAULT_SAMPLE_INTERVAL; | |
144 | devc->alarm_low = DEFAULT_ALARM_LOW; | |
145 | devc->alarm_high = DEFAULT_ALARM_HIGH; | |
146 | devc->mqflags = DEFAULT_WEIGHT_TIME | DEFAULT_WEIGHT_FREQ; | |
147 | devc->data_source = DEFAULT_DATA_SOURCE; | |
148 | devc->config_dirty = FALSE; | |
149 | ||
150 | /* TODO: Set date/time? */ | |
151 | ||
152 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
153 | devices = g_slist_append(devices, sdi); | |
154 | } | |
155 | g_slist_free(usb_devices); | |
156 | } else | |
157 | g_slist_free_full(usb_devices, g_free); | |
158 | ||
159 | return devices; | |
160 | } | |
161 | ||
162 | static GSList *dev_list(const struct sr_dev_driver *di) | |
163 | { | |
164 | return ((struct drv_context *)(di->context))->instances; | |
165 | } | |
166 | ||
167 | static int dev_open(struct sr_dev_inst *sdi) | |
168 | { | |
169 | struct sr_dev_driver *di = sdi->driver; | |
170 | struct drv_context *drvc; | |
171 | struct sr_usb_dev_inst *usb; | |
172 | int ret; | |
173 | ||
174 | if (!(drvc = di->context)) { | |
175 | sr_err("Driver was not initialized."); | |
176 | return SR_ERR; | |
177 | } | |
178 | ||
179 | usb = sdi->conn; | |
180 | ||
181 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) | |
182 | return SR_ERR; | |
183 | ||
184 | if ((ret = libusb_set_configuration(usb->devhdl, 1))) { | |
185 | sr_err("Failed to set configuration: %s.", libusb_error_name(ret)); | |
186 | return SR_ERR; | |
187 | } | |
188 | ||
189 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) { | |
190 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
191 | return SR_ERR; | |
192 | } | |
193 | sdi->status = SR_ST_ACTIVE; | |
194 | ||
195 | return ret; | |
196 | } | |
197 | ||
198 | static int dev_close(struct sr_dev_inst *sdi) | |
199 | { | |
200 | struct sr_dev_driver *di = sdi->driver; | |
201 | struct dev_context *devc; | |
202 | struct sr_usb_dev_inst *usb; | |
203 | ||
204 | if (!di->context) { | |
205 | sr_err("Driver was not initialized."); | |
206 | return SR_ERR; | |
207 | } | |
208 | ||
209 | usb = sdi->conn; | |
210 | ||
211 | if (!usb->devhdl) | |
212 | /* Nothing to do. */ | |
213 | return SR_OK; | |
214 | ||
215 | /* This allows a frontend to configure the device without ever | |
216 | * doing an acquisition step. */ | |
217 | devc = sdi->priv; | |
218 | if (!devc->config_dirty) | |
219 | kecheng_kc_330b_configure(sdi); | |
220 | ||
221 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
222 | libusb_close(usb->devhdl); | |
223 | usb->devhdl = NULL; | |
224 | sdi->status = SR_ST_INACTIVE; | |
225 | ||
226 | return SR_OK; | |
227 | } | |
228 | ||
229 | static int cleanup(const struct sr_dev_driver *di) | |
230 | { | |
231 | int ret; | |
232 | struct drv_context *drvc; | |
233 | ||
234 | if (!(drvc = di->context)) | |
235 | /* Can get called on an unused driver, doesn't matter. */ | |
236 | return SR_OK; | |
237 | ||
238 | ret = std_dev_clear(di, NULL); | |
239 | g_free(drvc); | |
240 | ||
241 | return ret; | |
242 | } | |
243 | ||
244 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
245 | const struct sr_channel_group *cg) | |
246 | { | |
247 | struct dev_context *devc; | |
248 | GVariant *rational[2]; | |
249 | const uint64_t *si; | |
250 | ||
251 | (void)cg; | |
252 | ||
253 | devc = sdi->priv; | |
254 | switch (key) { | |
255 | case SR_CONF_LIMIT_SAMPLES: | |
256 | *data = g_variant_new_uint64(devc->limit_samples); | |
257 | break; | |
258 | case SR_CONF_SAMPLE_INTERVAL: | |
259 | si = kecheng_kc_330b_sample_intervals[devc->sample_interval]; | |
260 | rational[0] = g_variant_new_uint64(si[0]); | |
261 | rational[1] = g_variant_new_uint64(si[1]); | |
262 | *data = g_variant_new_tuple(rational, 2); | |
263 | break; | |
264 | case SR_CONF_DATALOG: | |
265 | /* There really isn't a way to be sure the device is logging. */ | |
266 | return SR_ERR_NA; | |
267 | break; | |
268 | case SR_CONF_SPL_WEIGHT_FREQ: | |
269 | if (devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A) | |
270 | *data = g_variant_new_string("A"); | |
271 | else | |
272 | *data = g_variant_new_string("C"); | |
273 | break; | |
274 | case SR_CONF_SPL_WEIGHT_TIME: | |
275 | if (devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F) | |
276 | *data = g_variant_new_string("F"); | |
277 | else | |
278 | *data = g_variant_new_string("S"); | |
279 | break; | |
280 | case SR_CONF_DATA_SOURCE: | |
281 | if (devc->data_source == DATA_SOURCE_LIVE) | |
282 | *data = g_variant_new_string("Live"); | |
283 | else | |
284 | *data = g_variant_new_string("Memory"); | |
285 | break; | |
286 | default: | |
287 | return SR_ERR_NA; | |
288 | } | |
289 | ||
290 | return SR_OK; | |
291 | } | |
292 | ||
293 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
294 | const struct sr_channel_group *cg) | |
295 | { | |
296 | struct sr_dev_driver *di = sdi->driver; | |
297 | struct dev_context *devc; | |
298 | uint64_t p, q; | |
299 | unsigned int i; | |
300 | int tmp, ret; | |
301 | const char *tmp_str; | |
302 | ||
303 | (void)cg; | |
304 | ||
305 | if (sdi->status != SR_ST_ACTIVE) | |
306 | return SR_ERR_DEV_CLOSED; | |
307 | ||
308 | if (!di->context) { | |
309 | sr_err("Driver was not initialized."); | |
310 | return SR_ERR; | |
311 | } | |
312 | ||
313 | devc = sdi->priv; | |
314 | ret = SR_OK; | |
315 | switch (key) { | |
316 | case SR_CONF_LIMIT_SAMPLES: | |
317 | devc->limit_samples = g_variant_get_uint64(data); | |
318 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
319 | devc->limit_samples); | |
320 | break; | |
321 | case SR_CONF_SAMPLE_INTERVAL: | |
322 | g_variant_get(data, "(tt)", &p, &q); | |
323 | for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) { | |
324 | if (kecheng_kc_330b_sample_intervals[i][0] != p || kecheng_kc_330b_sample_intervals[i][1] != q) | |
325 | continue; | |
326 | devc->sample_interval = i; | |
327 | devc->config_dirty = TRUE; | |
328 | break; | |
329 | } | |
330 | if (i == ARRAY_SIZE(kecheng_kc_330b_sample_intervals)) | |
331 | ret = SR_ERR_ARG; | |
332 | break; | |
333 | case SR_CONF_SPL_WEIGHT_FREQ: | |
334 | tmp_str = g_variant_get_string(data, NULL); | |
335 | if (!strcmp(tmp_str, "A")) | |
336 | tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
337 | else if (!strcmp(tmp_str, "C")) | |
338 | tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
339 | else | |
340 | return SR_ERR_ARG; | |
341 | devc->mqflags &= ~(SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C); | |
342 | devc->mqflags |= tmp; | |
343 | devc->config_dirty = TRUE; | |
344 | break; | |
345 | case SR_CONF_SPL_WEIGHT_TIME: | |
346 | tmp_str = g_variant_get_string(data, NULL); | |
347 | if (!strcmp(tmp_str, "F")) | |
348 | tmp = SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
349 | else if (!strcmp(tmp_str, "S")) | |
350 | tmp = SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
351 | else | |
352 | return SR_ERR_ARG; | |
353 | devc->mqflags &= ~(SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S); | |
354 | devc->mqflags |= tmp; | |
355 | devc->config_dirty = TRUE; | |
356 | break; | |
357 | case SR_CONF_DATA_SOURCE: | |
358 | tmp_str = g_variant_get_string(data, NULL); | |
359 | if (!strcmp(tmp_str, "Live")) | |
360 | devc->data_source = DATA_SOURCE_LIVE; | |
361 | else if (!strcmp(tmp_str, "Memory")) | |
362 | devc->data_source = DATA_SOURCE_MEMORY; | |
363 | else | |
364 | return SR_ERR; | |
365 | devc->config_dirty = TRUE; | |
366 | break; | |
367 | default: | |
368 | ret = SR_ERR_NA; | |
369 | } | |
370 | ||
371 | return ret; | |
372 | } | |
373 | ||
374 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
375 | const struct sr_channel_group *cg) | |
376 | { | |
377 | GVariant *tuple, *rational[2]; | |
378 | GVariantBuilder gvb; | |
379 | unsigned int i; | |
380 | ||
381 | (void)sdi; | |
382 | (void)cg; | |
383 | ||
384 | switch (key) { | |
385 | case SR_CONF_DEVICE_OPTIONS: | |
386 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
387 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
388 | break; | |
389 | case SR_CONF_SAMPLE_INTERVAL: | |
390 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
391 | for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) { | |
392 | rational[0] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][0]); | |
393 | rational[1] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][1]); | |
394 | tuple = g_variant_new_tuple(rational, 2); | |
395 | g_variant_builder_add_value(&gvb, tuple); | |
396 | } | |
397 | *data = g_variant_builder_end(&gvb); | |
398 | break; | |
399 | case SR_CONF_SPL_WEIGHT_FREQ: | |
400 | *data = g_variant_new_strv(weight_freq, ARRAY_SIZE(weight_freq)); | |
401 | break; | |
402 | case SR_CONF_SPL_WEIGHT_TIME: | |
403 | *data = g_variant_new_strv(weight_time, ARRAY_SIZE(weight_time)); | |
404 | break; | |
405 | case SR_CONF_DATA_SOURCE: | |
406 | *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources)); | |
407 | break; | |
408 | default: | |
409 | return SR_ERR_NA; | |
410 | } | |
411 | ||
412 | return SR_OK; | |
413 | } | |
414 | ||
415 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, | |
416 | void *cb_data) | |
417 | { | |
418 | struct sr_dev_driver *di = sdi->driver; | |
419 | struct drv_context *drvc; | |
420 | struct dev_context *devc; | |
421 | struct sr_datafeed_packet packet; | |
422 | struct sr_datafeed_meta meta; | |
423 | struct sr_config *src; | |
424 | struct sr_usb_dev_inst *usb; | |
425 | GVariant *gvar, *rational[2]; | |
426 | const uint64_t *si; | |
427 | int req_len, buf_len, len, ret; | |
428 | unsigned char buf[9]; | |
429 | ||
430 | if (sdi->status != SR_ST_ACTIVE) | |
431 | return SR_ERR_DEV_CLOSED; | |
432 | ||
433 | drvc = di->context; | |
434 | devc = sdi->priv; | |
435 | usb = sdi->conn; | |
436 | ||
437 | devc->cb_data = cb_data; | |
438 | devc->num_samples = 0; | |
439 | ||
440 | /* Send header packet to the session bus. */ | |
441 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
442 | ||
443 | if (devc->data_source == DATA_SOURCE_LIVE) { | |
444 | /* Force configuration. */ | |
445 | kecheng_kc_330b_configure(sdi); | |
446 | ||
447 | if (kecheng_kc_330b_status_get(sdi, &ret) != SR_OK) | |
448 | return SR_ERR; | |
449 | if (ret != DEVICE_ACTIVE) { | |
450 | sr_err("Device is inactive"); | |
451 | /* Still continue though, since the device will | |
452 | * just return 30.0 until the user hits the button | |
453 | * on the device -- and then start feeding good | |
454 | * samples back. */ | |
455 | } | |
456 | } else { | |
457 | if (kecheng_kc_330b_log_info_get(sdi, buf) != SR_OK) | |
458 | return SR_ERR; | |
459 | devc->mqflags = buf[4] ? SR_MQFLAG_SPL_TIME_WEIGHT_S : SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
460 | devc->mqflags |= buf[5] ? SR_MQFLAG_SPL_FREQ_WEIGHT_C : SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
461 | devc->stored_samples = (buf[7] << 8) | buf[8]; | |
462 | if (devc->stored_samples == 0) { | |
463 | /* Notify frontend of empty log by sending start/end packets. */ | |
464 | packet.type = SR_DF_END; | |
465 | sr_session_send(cb_data, &packet); | |
466 | return SR_OK; | |
467 | } | |
468 | ||
469 | if (devc->limit_samples && devc->limit_samples < devc->stored_samples) | |
470 | devc->stored_samples = devc->limit_samples; | |
471 | ||
472 | si = kecheng_kc_330b_sample_intervals[buf[1]]; | |
473 | rational[0] = g_variant_new_uint64(si[0]); | |
474 | rational[1] = g_variant_new_uint64(si[1]); | |
475 | gvar = g_variant_new_tuple(rational, 2); | |
476 | src = sr_config_new(SR_CONF_SAMPLE_INTERVAL, gvar); | |
477 | packet.type = SR_DF_META; | |
478 | packet.payload = &meta; | |
479 | meta.config = g_slist_append(NULL, src); | |
480 | sr_session_send(devc->cb_data, &packet); | |
481 | g_free(src); | |
482 | } | |
483 | ||
484 | if (!(devc->xfer = libusb_alloc_transfer(0))) | |
485 | return SR_ERR; | |
486 | ||
487 | usb_source_add(sdi->session, drvc->sr_ctx, 10, | |
488 | kecheng_kc_330b_handle_events, (void *)sdi); | |
489 | ||
490 | if (devc->data_source == DATA_SOURCE_LIVE) { | |
491 | buf[0] = CMD_GET_LIVE_SPL; | |
492 | buf_len = 1; | |
493 | devc->state = LIVE_SPL_WAIT; | |
494 | devc->last_live_request = g_get_monotonic_time() / 1000; | |
495 | req_len = 3; | |
496 | } else { | |
497 | buf[0] = CMD_GET_LOG_DATA; | |
498 | buf[1] = 0; | |
499 | buf[2] = 0; | |
500 | buf_len = 4; | |
501 | devc->state = LOG_DATA_WAIT; | |
502 | if (devc->stored_samples < 63) | |
503 | buf[3] = devc->stored_samples; | |
504 | else | |
505 | buf[3] = 63; | |
506 | /* Command ack byte + 2 bytes per sample. */ | |
507 | req_len = 1 + buf[3] * 2; | |
508 | } | |
509 | ||
510 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, buf_len, &len, 5); | |
511 | if (ret != 0 || len != 1) { | |
512 | sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret)); | |
513 | libusb_free_transfer(devc->xfer); | |
514 | return SR_ERR; | |
515 | } | |
516 | ||
517 | libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf, | |
518 | req_len, kecheng_kc_330b_receive_transfer, (void *)sdi, 15); | |
519 | if (libusb_submit_transfer(devc->xfer) != 0) { | |
520 | libusb_free_transfer(devc->xfer); | |
521 | return SR_ERR; | |
522 | } | |
523 | ||
524 | return SR_OK; | |
525 | } | |
526 | ||
527 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
528 | { | |
529 | struct dev_context *devc; | |
530 | ||
531 | (void)cb_data; | |
532 | ||
533 | if (sdi->status != SR_ST_ACTIVE) | |
534 | return SR_ERR_DEV_CLOSED; | |
535 | ||
536 | /* Signal USB transfer handler to clean up and stop. */ | |
537 | sdi->status = SR_ST_STOPPING; | |
538 | ||
539 | devc = sdi->priv; | |
540 | if (devc->data_source == DATA_SOURCE_MEMORY && devc->config_dirty) { | |
541 | /* The protocol doesn't have a command to clear stored data; | |
542 | * it clears it whenever new configuration is set. That means | |
543 | * we can't just configure the device any time we want when | |
544 | * it's in DATA_SOURCE_MEMORY mode. The only safe time to do | |
545 | * it is now, when we're sure we've pulled in all the stored | |
546 | * data. */ | |
547 | kecheng_kc_330b_configure(sdi); | |
548 | } | |
549 | ||
550 | return SR_OK; | |
551 | } | |
552 | ||
553 | SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info = { | |
554 | .name = "kecheng-kc-330b", | |
555 | .longname = "Kecheng KC-330B", | |
556 | .api_version = 1, | |
557 | .init = init, | |
558 | .cleanup = cleanup, | |
559 | .scan = scan, | |
560 | .dev_list = dev_list, | |
561 | .dev_clear = NULL, | |
562 | .config_get = config_get, | |
563 | .config_set = config_set, | |
564 | .config_list = config_list, | |
565 | .dev_open = dev_open, | |
566 | .dev_close = dev_close, | |
567 | .dev_acquisition_start = dev_acquisition_start, | |
568 | .dev_acquisition_stop = dev_acquisition_stop, | |
569 | .context = NULL, | |
570 | }; |