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ed759a08 BV |
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 | ||
6ec6c43b | 20 | #include <config.h> |
bc7be4a9 | 21 | #include <string.h> |
ed759a08 BV |
22 | #include "protocol.h" |
23 | ||
a8806f03 BV |
24 | #define USB_CONN "1041.8101" |
25 | #define VENDOR "Kecheng" | |
26 | #define USB_INTERFACE 0 | |
a8806f03 | 27 | |
f254bc4b | 28 | static const uint32_t devopts[] = { |
a8806f03 | 29 | SR_CONF_SOUNDLEVELMETER, |
a8806f03 | 30 | SR_CONF_CONTINUOUS, |
5827f61b BV |
31 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, |
32 | SR_CONF_SAMPLE_INTERVAL | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
33 | SR_CONF_DATALOG | SR_CONF_GET, | |
34 | SR_CONF_SPL_WEIGHT_FREQ | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
35 | SR_CONF_SPL_WEIGHT_TIME | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
36 | SR_CONF_DATA_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
bc7be4a9 BV |
37 | }; |
38 | ||
df035528 | 39 | SR_PRIV const uint64_t kecheng_kc_330b_sample_intervals[][2] = { |
bc7be4a9 BV |
40 | { 1, 8 }, |
41 | { 1, 2 }, | |
42 | { 1, 1 }, | |
43 | { 2, 1 }, | |
44 | { 5, 1 }, | |
45 | { 10, 1 }, | |
46 | { 60, 1 }, | |
47 | }; | |
48 | ||
49 | static const char *weight_freq[] = { | |
50 | "A", | |
51 | "C", | |
52 | }; | |
53 | ||
54 | static const char *weight_time[] = { | |
55 | "F", | |
56 | "S", | |
57 | }; | |
58 | ||
59 | static const char *data_sources[] = { | |
60 | "Live", | |
61 | "Memory", | |
a8806f03 BV |
62 | }; |
63 | ||
4f840ce9 ML |
64 | static int scan_kecheng(struct sr_dev_driver *di, |
65 | struct sr_usb_dev_inst *usb, char **model) | |
a8806f03 BV |
66 | { |
67 | struct drv_context *drvc; | |
68 | int len, ret; | |
69 | unsigned char cmd, buf[32]; | |
70 | ||
41812aca | 71 | drvc = di->context; |
a8806f03 BV |
72 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) |
73 | return SR_ERR; | |
74 | ||
75 | cmd = CMD_IDENTIFY; | |
76 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &cmd, 1, &len, 5); | |
77 | if (ret != 0) { | |
78 | libusb_close(usb->devhdl); | |
79 | sr_dbg("Failed to send Identify command: %s", libusb_error_name(ret)); | |
80 | return SR_ERR; | |
81 | } | |
82 | ||
83 | ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 32, &len, 10); | |
84 | if (ret != 0) { | |
85 | libusb_close(usb->devhdl); | |
86 | sr_dbg("Failed to receive response: %s", libusb_error_name(ret)); | |
87 | return SR_ERR; | |
88 | } | |
89 | ||
90 | libusb_close(usb->devhdl); | |
91 | usb->devhdl = NULL; | |
92 | ||
93 | if (len < 2 || buf[0] != (CMD_IDENTIFY | 0x80) || buf[1] > 30) { | |
94 | sr_dbg("Invalid response to Identify command"); | |
95 | return SR_ERR; | |
96 | } | |
97 | ||
98 | buf[buf[1] + 2] = '\x0'; | |
99 | *model = g_strndup((const gchar *)buf + 2, 30); | |
a8806f03 BV |
100 | |
101 | return SR_OK; | |
102 | } | |
103 | ||
4f840ce9 | 104 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
ed759a08 BV |
105 | { |
106 | struct drv_context *drvc; | |
a8806f03 BV |
107 | struct dev_context *devc; |
108 | struct sr_dev_inst *sdi; | |
a8806f03 BV |
109 | GSList *usb_devices, *devices, *l; |
110 | char *model; | |
ed759a08 BV |
111 | |
112 | (void)options; | |
113 | ||
41812aca | 114 | drvc = di->context; |
ed759a08 | 115 | |
a8806f03 BV |
116 | devices = NULL; |
117 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_CONN))) { | |
118 | /* We have a list of sr_usb_dev_inst matching the connection | |
119 | * string. Wrap them in sr_dev_inst and we're done. */ | |
120 | for (l = usb_devices; l; l = l->next) { | |
4f840ce9 | 121 | if (scan_kecheng(di, l->data, &model) != SR_OK) |
a8806f03 | 122 | continue; |
aac29cc1 | 123 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
124 | sdi->status = SR_ST_INACTIVE; |
125 | sdi->vendor = g_strdup(VENDOR); | |
126 | sdi->model = model; /* Already g_strndup()'d. */ | |
a8806f03 BV |
127 | sdi->driver = di; |
128 | sdi->inst_type = SR_INST_USB; | |
129 | sdi->conn = l->data; | |
5e23fcab | 130 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "SPL"); |
f57d8ffe | 131 | devc = g_malloc0(sizeof(struct dev_context)); |
a8806f03 BV |
132 | sdi->priv = devc; |
133 | devc->limit_samples = 0; | |
bc7be4a9 BV |
134 | /* The protocol provides no way to read the current |
135 | * settings, so we'll enforce these. */ | |
136 | devc->sample_interval = DEFAULT_SAMPLE_INTERVAL; | |
137 | devc->alarm_low = DEFAULT_ALARM_LOW; | |
138 | devc->alarm_high = DEFAULT_ALARM_HIGH; | |
139 | devc->mqflags = DEFAULT_WEIGHT_TIME | DEFAULT_WEIGHT_FREQ; | |
140 | devc->data_source = DEFAULT_DATA_SOURCE; | |
85ed4ab3 | 141 | devc->config_dirty = FALSE; |
bc7be4a9 BV |
142 | |
143 | /* TODO: Set date/time? */ | |
a8806f03 BV |
144 | |
145 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
146 | devices = g_slist_append(devices, sdi); | |
147 | } | |
148 | g_slist_free(usb_devices); | |
149 | } else | |
150 | g_slist_free_full(usb_devices, g_free); | |
ed759a08 BV |
151 | |
152 | return devices; | |
153 | } | |
154 | ||
ed759a08 BV |
155 | static int dev_open(struct sr_dev_inst *sdi) |
156 | { | |
4f840ce9 | 157 | struct sr_dev_driver *di = sdi->driver; |
efa98402 | 158 | struct drv_context *drvc = di->context; |
a8806f03 BV |
159 | struct sr_usb_dev_inst *usb; |
160 | int ret; | |
161 | ||
a8806f03 | 162 | usb = sdi->conn; |
ed759a08 | 163 | |
a8806f03 BV |
164 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) |
165 | return SR_ERR; | |
ed759a08 | 166 | |
85ed4ab3 BV |
167 | if ((ret = libusb_set_configuration(usb->devhdl, 1))) { |
168 | sr_err("Failed to set configuration: %s.", libusb_error_name(ret)); | |
169 | return SR_ERR; | |
170 | } | |
171 | ||
a8806f03 BV |
172 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) { |
173 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
174 | return SR_ERR; | |
175 | } | |
ed759a08 BV |
176 | sdi->status = SR_ST_ACTIVE; |
177 | ||
a8806f03 | 178 | return ret; |
ed759a08 BV |
179 | } |
180 | ||
181 | static int dev_close(struct sr_dev_inst *sdi) | |
182 | { | |
85ed4ab3 | 183 | struct dev_context *devc; |
a8806f03 BV |
184 | struct sr_usb_dev_inst *usb; |
185 | ||
a8806f03 | 186 | usb = sdi->conn; |
ed759a08 | 187 | |
a8806f03 BV |
188 | if (!usb->devhdl) |
189 | /* Nothing to do. */ | |
190 | return SR_OK; | |
ed759a08 | 191 | |
85ed4ab3 BV |
192 | /* This allows a frontend to configure the device without ever |
193 | * doing an acquisition step. */ | |
194 | devc = sdi->priv; | |
195 | if (!devc->config_dirty) | |
196 | kecheng_kc_330b_configure(sdi); | |
197 | ||
a8806f03 BV |
198 | libusb_release_interface(usb->devhdl, USB_INTERFACE); |
199 | libusb_close(usb->devhdl); | |
200 | usb->devhdl = NULL; | |
ed759a08 BV |
201 | sdi->status = SR_ST_INACTIVE; |
202 | ||
203 | return SR_OK; | |
204 | } | |
205 | ||
584560f1 | 206 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 207 | const struct sr_channel_group *cg) |
ed759a08 | 208 | { |
a8806f03 | 209 | struct dev_context *devc; |
bc7be4a9 BV |
210 | GVariant *rational[2]; |
211 | const uint64_t *si; | |
ed759a08 | 212 | |
53b4680f | 213 | (void)cg; |
d3c74a6f | 214 | |
a8806f03 | 215 | devc = sdi->priv; |
ed759a08 | 216 | switch (key) { |
a8806f03 BV |
217 | case SR_CONF_LIMIT_SAMPLES: |
218 | *data = g_variant_new_uint64(devc->limit_samples); | |
219 | break; | |
bc7be4a9 | 220 | case SR_CONF_SAMPLE_INTERVAL: |
df035528 | 221 | si = kecheng_kc_330b_sample_intervals[devc->sample_interval]; |
bc7be4a9 BV |
222 | rational[0] = g_variant_new_uint64(si[0]); |
223 | rational[1] = g_variant_new_uint64(si[1]); | |
224 | *data = g_variant_new_tuple(rational, 2); | |
225 | break; | |
226 | case SR_CONF_DATALOG: | |
85ed4ab3 BV |
227 | /* There really isn't a way to be sure the device is logging. */ |
228 | return SR_ERR_NA; | |
bc7be4a9 BV |
229 | break; |
230 | case SR_CONF_SPL_WEIGHT_FREQ: | |
231 | if (devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A) | |
232 | *data = g_variant_new_string("A"); | |
233 | else | |
234 | *data = g_variant_new_string("C"); | |
235 | break; | |
236 | case SR_CONF_SPL_WEIGHT_TIME: | |
237 | if (devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F) | |
238 | *data = g_variant_new_string("F"); | |
239 | else | |
240 | *data = g_variant_new_string("S"); | |
241 | break; | |
242 | case SR_CONF_DATA_SOURCE: | |
243 | if (devc->data_source == DATA_SOURCE_LIVE) | |
244 | *data = g_variant_new_string("Live"); | |
245 | else | |
246 | *data = g_variant_new_string("Memory"); | |
247 | break; | |
ed759a08 BV |
248 | default: |
249 | return SR_ERR_NA; | |
250 | } | |
251 | ||
a8806f03 | 252 | return SR_OK; |
ed759a08 BV |
253 | } |
254 | ||
584560f1 | 255 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 256 | const struct sr_channel_group *cg) |
ed759a08 | 257 | { |
a8806f03 | 258 | struct dev_context *devc; |
bc7be4a9 BV |
259 | uint64_t p, q; |
260 | unsigned int i; | |
261 | int tmp, ret; | |
262 | const char *tmp_str; | |
ed759a08 | 263 | |
53b4680f | 264 | (void)cg; |
d3c74a6f | 265 | |
ed759a08 BV |
266 | if (sdi->status != SR_ST_ACTIVE) |
267 | return SR_ERR_DEV_CLOSED; | |
268 | ||
a8806f03 | 269 | devc = sdi->priv; |
ed759a08 BV |
270 | ret = SR_OK; |
271 | switch (key) { | |
a8806f03 BV |
272 | case SR_CONF_LIMIT_SAMPLES: |
273 | devc->limit_samples = g_variant_get_uint64(data); | |
274 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
275 | devc->limit_samples); | |
276 | break; | |
bc7be4a9 BV |
277 | case SR_CONF_SAMPLE_INTERVAL: |
278 | g_variant_get(data, "(tt)", &p, &q); | |
df035528 BV |
279 | for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) { |
280 | if (kecheng_kc_330b_sample_intervals[i][0] != p || kecheng_kc_330b_sample_intervals[i][1] != q) | |
bc7be4a9 BV |
281 | continue; |
282 | devc->sample_interval = i; | |
85ed4ab3 | 283 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
284 | break; |
285 | } | |
df035528 | 286 | if (i == ARRAY_SIZE(kecheng_kc_330b_sample_intervals)) |
bc7be4a9 BV |
287 | ret = SR_ERR_ARG; |
288 | break; | |
289 | case SR_CONF_SPL_WEIGHT_FREQ: | |
290 | tmp_str = g_variant_get_string(data, NULL); | |
291 | if (!strcmp(tmp_str, "A")) | |
292 | tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
293 | else if (!strcmp(tmp_str, "C")) | |
294 | tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
295 | else | |
296 | return SR_ERR_ARG; | |
297 | devc->mqflags &= ~(SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C); | |
298 | devc->mqflags |= tmp; | |
85ed4ab3 | 299 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
300 | break; |
301 | case SR_CONF_SPL_WEIGHT_TIME: | |
302 | tmp_str = g_variant_get_string(data, NULL); | |
303 | if (!strcmp(tmp_str, "F")) | |
304 | tmp = SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
305 | else if (!strcmp(tmp_str, "S")) | |
306 | tmp = SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
307 | else | |
308 | return SR_ERR_ARG; | |
309 | devc->mqflags &= ~(SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S); | |
310 | devc->mqflags |= tmp; | |
85ed4ab3 | 311 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
312 | break; |
313 | case SR_CONF_DATA_SOURCE: | |
314 | tmp_str = g_variant_get_string(data, NULL); | |
315 | if (!strcmp(tmp_str, "Live")) | |
316 | devc->data_source = DATA_SOURCE_LIVE; | |
317 | else if (!strcmp(tmp_str, "Memory")) | |
318 | devc->data_source = DATA_SOURCE_MEMORY; | |
319 | else | |
320 | return SR_ERR; | |
85ed4ab3 | 321 | devc->config_dirty = TRUE; |
bc7be4a9 | 322 | break; |
ed759a08 BV |
323 | default: |
324 | ret = SR_ERR_NA; | |
325 | } | |
326 | ||
327 | return ret; | |
328 | } | |
329 | ||
584560f1 | 330 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 331 | const struct sr_channel_group *cg) |
ed759a08 | 332 | { |
bc7be4a9 BV |
333 | GVariant *tuple, *rational[2]; |
334 | GVariantBuilder gvb; | |
335 | unsigned int i; | |
ed759a08 BV |
336 | |
337 | (void)sdi; | |
53b4680f | 338 | (void)cg; |
ed759a08 | 339 | |
ed759a08 | 340 | switch (key) { |
a8806f03 | 341 | case SR_CONF_DEVICE_OPTIONS: |
584560f1 | 342 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 343 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
a8806f03 | 344 | break; |
bc7be4a9 BV |
345 | case SR_CONF_SAMPLE_INTERVAL: |
346 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
df035528 BV |
347 | for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) { |
348 | rational[0] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][0]); | |
349 | rational[1] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][1]); | |
bc7be4a9 BV |
350 | tuple = g_variant_new_tuple(rational, 2); |
351 | g_variant_builder_add_value(&gvb, tuple); | |
352 | } | |
353 | *data = g_variant_builder_end(&gvb); | |
354 | break; | |
355 | case SR_CONF_SPL_WEIGHT_FREQ: | |
356 | *data = g_variant_new_strv(weight_freq, ARRAY_SIZE(weight_freq)); | |
357 | break; | |
358 | case SR_CONF_SPL_WEIGHT_TIME: | |
359 | *data = g_variant_new_strv(weight_time, ARRAY_SIZE(weight_time)); | |
360 | break; | |
361 | case SR_CONF_DATA_SOURCE: | |
362 | *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources)); | |
363 | break; | |
ed759a08 BV |
364 | default: |
365 | return SR_ERR_NA; | |
366 | } | |
367 | ||
a8806f03 | 368 | return SR_OK; |
ed759a08 BV |
369 | } |
370 | ||
695dc859 | 371 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
ed759a08 | 372 | { |
4f840ce9 | 373 | struct sr_dev_driver *di = sdi->driver; |
bc7be4a9 BV |
374 | struct drv_context *drvc; |
375 | struct dev_context *devc; | |
85ed4ab3 BV |
376 | struct sr_datafeed_packet packet; |
377 | struct sr_datafeed_meta meta; | |
378 | struct sr_config *src; | |
bc7be4a9 | 379 | struct sr_usb_dev_inst *usb; |
85ed4ab3 | 380 | GVariant *gvar, *rational[2]; |
85ed4ab3 | 381 | const uint64_t *si; |
7f22cd95 | 382 | int req_len, buf_len, len, ret; |
85ed4ab3 | 383 | unsigned char buf[9]; |
ed759a08 BV |
384 | |
385 | if (sdi->status != SR_ST_ACTIVE) | |
386 | return SR_ERR_DEV_CLOSED; | |
387 | ||
41812aca | 388 | drvc = di->context; |
bc7be4a9 BV |
389 | devc = sdi->priv; |
390 | usb = sdi->conn; | |
391 | ||
bc7be4a9 BV |
392 | devc->num_samples = 0; |
393 | ||
695dc859 | 394 | std_session_send_df_header(sdi, LOG_PREFIX); |
85ed4ab3 | 395 | |
f336618c | 396 | if (devc->data_source == DATA_SOURCE_LIVE) { |
85ed4ab3 BV |
397 | /* Force configuration. */ |
398 | kecheng_kc_330b_configure(sdi); | |
399 | ||
f336618c BV |
400 | if (kecheng_kc_330b_status_get(sdi, &ret) != SR_OK) |
401 | return SR_ERR; | |
f336618c BV |
402 | if (ret != DEVICE_ACTIVE) { |
403 | sr_err("Device is inactive"); | |
404 | /* Still continue though, since the device will | |
405 | * just return 30.0 until the user hits the button | |
406 | * on the device -- and then start feeding good | |
407 | * samples back. */ | |
408 | } | |
85ed4ab3 BV |
409 | } else { |
410 | if (kecheng_kc_330b_log_info_get(sdi, buf) != SR_OK) | |
411 | return SR_ERR; | |
7f22cd95 BV |
412 | devc->mqflags = buf[4] ? SR_MQFLAG_SPL_TIME_WEIGHT_S : SR_MQFLAG_SPL_TIME_WEIGHT_F; |
413 | devc->mqflags |= buf[5] ? SR_MQFLAG_SPL_FREQ_WEIGHT_C : SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
85ed4ab3 BV |
414 | devc->stored_samples = (buf[7] << 8) | buf[8]; |
415 | if (devc->stored_samples == 0) { | |
416 | /* Notify frontend of empty log by sending start/end packets. */ | |
695dc859 | 417 | std_session_send_df_end(sdi, LOG_PREFIX); |
85ed4ab3 BV |
418 | return SR_OK; |
419 | } | |
420 | ||
421 | if (devc->limit_samples && devc->limit_samples < devc->stored_samples) | |
422 | devc->stored_samples = devc->limit_samples; | |
423 | ||
424 | si = kecheng_kc_330b_sample_intervals[buf[1]]; | |
425 | rational[0] = g_variant_new_uint64(si[0]); | |
426 | rational[1] = g_variant_new_uint64(si[1]); | |
427 | gvar = g_variant_new_tuple(rational, 2); | |
428 | src = sr_config_new(SR_CONF_SAMPLE_INTERVAL, gvar); | |
429 | packet.type = SR_DF_META; | |
430 | packet.payload = &meta; | |
431 | meta.config = g_slist_append(NULL, src); | |
695dc859 | 432 | sr_session_send(sdi, &packet); |
85ed4ab3 | 433 | g_free(src); |
f336618c BV |
434 | } |
435 | ||
df035528 BV |
436 | if (!(devc->xfer = libusb_alloc_transfer(0))) |
437 | return SR_ERR; | |
438 | ||
102f1239 | 439 | usb_source_add(sdi->session, drvc->sr_ctx, 10, |
6c60facc | 440 | kecheng_kc_330b_handle_events, (void *)sdi); |
bc7be4a9 | 441 | |
85ed4ab3 BV |
442 | if (devc->data_source == DATA_SOURCE_LIVE) { |
443 | buf[0] = CMD_GET_LIVE_SPL; | |
444 | buf_len = 1; | |
445 | devc->state = LIVE_SPL_WAIT; | |
446 | devc->last_live_request = g_get_monotonic_time() / 1000; | |
447 | req_len = 3; | |
448 | } else { | |
449 | buf[0] = CMD_GET_LOG_DATA; | |
450 | buf[1] = 0; | |
451 | buf[2] = 0; | |
452 | buf_len = 4; | |
453 | devc->state = LOG_DATA_WAIT; | |
454 | if (devc->stored_samples < 63) | |
455 | buf[3] = devc->stored_samples; | |
456 | else | |
457 | buf[3] = 63; | |
458 | /* Command ack byte + 2 bytes per sample. */ | |
459 | req_len = 1 + buf[3] * 2; | |
460 | } | |
461 | ||
462 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, buf_len, &len, 5); | |
bc7be4a9 BV |
463 | if (ret != 0 || len != 1) { |
464 | sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret)); | |
df035528 BV |
465 | libusb_free_transfer(devc->xfer); |
466 | return SR_ERR; | |
467 | } | |
df035528 BV |
468 | |
469 | libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf, | |
85ed4ab3 | 470 | req_len, kecheng_kc_330b_receive_transfer, (void *)sdi, 15); |
df035528 BV |
471 | if (libusb_submit_transfer(devc->xfer) != 0) { |
472 | libusb_free_transfer(devc->xfer); | |
bc7be4a9 BV |
473 | return SR_ERR; |
474 | } | |
ed759a08 BV |
475 | |
476 | return SR_OK; | |
477 | } | |
478 | ||
695dc859 | 479 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
ed759a08 | 480 | { |
85ed4ab3 BV |
481 | struct dev_context *devc; |
482 | ||
ed759a08 BV |
483 | if (sdi->status != SR_ST_ACTIVE) |
484 | return SR_ERR_DEV_CLOSED; | |
485 | ||
df035528 BV |
486 | /* Signal USB transfer handler to clean up and stop. */ |
487 | sdi->status = SR_ST_STOPPING; | |
ed759a08 | 488 | |
85ed4ab3 BV |
489 | devc = sdi->priv; |
490 | if (devc->data_source == DATA_SOURCE_MEMORY && devc->config_dirty) { | |
491 | /* The protocol doesn't have a command to clear stored data; | |
492 | * it clears it whenever new configuration is set. That means | |
493 | * we can't just configure the device any time we want when | |
494 | * it's in DATA_SOURCE_MEMORY mode. The only safe time to do | |
495 | * it is now, when we're sure we've pulled in all the stored | |
496 | * data. */ | |
497 | kecheng_kc_330b_configure(sdi); | |
498 | } | |
499 | ||
ed759a08 BV |
500 | return SR_OK; |
501 | } | |
502 | ||
dd5c48a6 | 503 | static struct sr_dev_driver kecheng_kc_330b_driver_info = { |
ed759a08 BV |
504 | .name = "kecheng-kc-330b", |
505 | .longname = "Kecheng KC-330B", | |
506 | .api_version = 1, | |
c2fdcc25 | 507 | .init = std_init, |
700d6b64 | 508 | .cleanup = std_cleanup, |
ed759a08 | 509 | .scan = scan, |
c01bf34c | 510 | .dev_list = std_dev_list, |
a6630742 | 511 | .dev_clear = NULL, |
ed759a08 BV |
512 | .config_get = config_get, |
513 | .config_set = config_set, | |
514 | .config_list = config_list, | |
515 | .dev_open = dev_open, | |
516 | .dev_close = dev_close, | |
517 | .dev_acquisition_start = dev_acquisition_start, | |
518 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 519 | .context = NULL, |
ed759a08 | 520 | }; |
dd5c48a6 | 521 | SR_REGISTER_DEV_DRIVER(kecheng_kc_330b_driver_info); |