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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 | ||
ed759a08 | 64 | SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info; |
ed759a08 | 65 | |
4f840ce9 ML |
66 | static int scan_kecheng(struct sr_dev_driver *di, |
67 | struct sr_usb_dev_inst *usb, char **model) | |
a8806f03 BV |
68 | { |
69 | struct drv_context *drvc; | |
70 | int len, ret; | |
71 | unsigned char cmd, buf[32]; | |
72 | ||
41812aca | 73 | drvc = di->context; |
a8806f03 BV |
74 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) |
75 | return SR_ERR; | |
76 | ||
77 | cmd = CMD_IDENTIFY; | |
78 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &cmd, 1, &len, 5); | |
79 | if (ret != 0) { | |
80 | libusb_close(usb->devhdl); | |
81 | sr_dbg("Failed to send Identify command: %s", libusb_error_name(ret)); | |
82 | return SR_ERR; | |
83 | } | |
84 | ||
85 | ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 32, &len, 10); | |
86 | if (ret != 0) { | |
87 | libusb_close(usb->devhdl); | |
88 | sr_dbg("Failed to receive response: %s", libusb_error_name(ret)); | |
89 | return SR_ERR; | |
90 | } | |
91 | ||
92 | libusb_close(usb->devhdl); | |
93 | usb->devhdl = NULL; | |
94 | ||
95 | if (len < 2 || buf[0] != (CMD_IDENTIFY | 0x80) || buf[1] > 30) { | |
96 | sr_dbg("Invalid response to Identify command"); | |
97 | return SR_ERR; | |
98 | } | |
99 | ||
100 | buf[buf[1] + 2] = '\x0'; | |
101 | *model = g_strndup((const gchar *)buf + 2, 30); | |
a8806f03 BV |
102 | |
103 | return SR_OK; | |
104 | } | |
105 | ||
4f840ce9 | 106 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
ed759a08 BV |
107 | { |
108 | struct drv_context *drvc; | |
a8806f03 BV |
109 | struct dev_context *devc; |
110 | struct sr_dev_inst *sdi; | |
a8806f03 BV |
111 | GSList *usb_devices, *devices, *l; |
112 | char *model; | |
ed759a08 BV |
113 | |
114 | (void)options; | |
115 | ||
41812aca | 116 | drvc = di->context; |
ed759a08 BV |
117 | drvc->instances = NULL; |
118 | ||
a8806f03 BV |
119 | devices = NULL; |
120 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_CONN))) { | |
121 | /* We have a list of sr_usb_dev_inst matching the connection | |
122 | * string. Wrap them in sr_dev_inst and we're done. */ | |
123 | for (l = usb_devices; l; l = l->next) { | |
4f840ce9 | 124 | if (scan_kecheng(di, l->data, &model) != SR_OK) |
a8806f03 | 125 | continue; |
aac29cc1 | 126 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
127 | sdi->status = SR_ST_INACTIVE; |
128 | sdi->vendor = g_strdup(VENDOR); | |
129 | sdi->model = model; /* Already g_strndup()'d. */ | |
a8806f03 BV |
130 | sdi->driver = di; |
131 | sdi->inst_type = SR_INST_USB; | |
132 | sdi->conn = l->data; | |
5e23fcab | 133 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "SPL"); |
f57d8ffe | 134 | devc = g_malloc0(sizeof(struct dev_context)); |
a8806f03 BV |
135 | sdi->priv = devc; |
136 | devc->limit_samples = 0; | |
bc7be4a9 BV |
137 | /* The protocol provides no way to read the current |
138 | * settings, so we'll enforce these. */ | |
139 | devc->sample_interval = DEFAULT_SAMPLE_INTERVAL; | |
140 | devc->alarm_low = DEFAULT_ALARM_LOW; | |
141 | devc->alarm_high = DEFAULT_ALARM_HIGH; | |
142 | devc->mqflags = DEFAULT_WEIGHT_TIME | DEFAULT_WEIGHT_FREQ; | |
143 | devc->data_source = DEFAULT_DATA_SOURCE; | |
85ed4ab3 | 144 | devc->config_dirty = FALSE; |
bc7be4a9 BV |
145 | |
146 | /* TODO: Set date/time? */ | |
a8806f03 BV |
147 | |
148 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
149 | devices = g_slist_append(devices, sdi); | |
150 | } | |
151 | g_slist_free(usb_devices); | |
152 | } else | |
153 | g_slist_free_full(usb_devices, g_free); | |
ed759a08 BV |
154 | |
155 | return devices; | |
156 | } | |
157 | ||
ed759a08 BV |
158 | static int dev_open(struct sr_dev_inst *sdi) |
159 | { | |
4f840ce9 | 160 | struct sr_dev_driver *di = sdi->driver; |
efa98402 | 161 | struct drv_context *drvc = di->context; |
a8806f03 BV |
162 | struct sr_usb_dev_inst *usb; |
163 | int ret; | |
164 | ||
a8806f03 | 165 | usb = sdi->conn; |
ed759a08 | 166 | |
a8806f03 BV |
167 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) |
168 | return SR_ERR; | |
ed759a08 | 169 | |
85ed4ab3 BV |
170 | if ((ret = libusb_set_configuration(usb->devhdl, 1))) { |
171 | sr_err("Failed to set configuration: %s.", libusb_error_name(ret)); | |
172 | return SR_ERR; | |
173 | } | |
174 | ||
a8806f03 BV |
175 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) { |
176 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
177 | return SR_ERR; | |
178 | } | |
ed759a08 BV |
179 | sdi->status = SR_ST_ACTIVE; |
180 | ||
a8806f03 | 181 | return ret; |
ed759a08 BV |
182 | } |
183 | ||
184 | static int dev_close(struct sr_dev_inst *sdi) | |
185 | { | |
85ed4ab3 | 186 | struct dev_context *devc; |
a8806f03 BV |
187 | struct sr_usb_dev_inst *usb; |
188 | ||
a8806f03 | 189 | usb = sdi->conn; |
ed759a08 | 190 | |
a8806f03 BV |
191 | if (!usb->devhdl) |
192 | /* Nothing to do. */ | |
193 | return SR_OK; | |
ed759a08 | 194 | |
85ed4ab3 BV |
195 | /* This allows a frontend to configure the device without ever |
196 | * doing an acquisition step. */ | |
197 | devc = sdi->priv; | |
198 | if (!devc->config_dirty) | |
199 | kecheng_kc_330b_configure(sdi); | |
200 | ||
a8806f03 BV |
201 | libusb_release_interface(usb->devhdl, USB_INTERFACE); |
202 | libusb_close(usb->devhdl); | |
203 | usb->devhdl = NULL; | |
ed759a08 BV |
204 | sdi->status = SR_ST_INACTIVE; |
205 | ||
206 | return SR_OK; | |
207 | } | |
208 | ||
584560f1 | 209 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 210 | const struct sr_channel_group *cg) |
ed759a08 | 211 | { |
a8806f03 | 212 | struct dev_context *devc; |
bc7be4a9 BV |
213 | GVariant *rational[2]; |
214 | const uint64_t *si; | |
ed759a08 | 215 | |
53b4680f | 216 | (void)cg; |
d3c74a6f | 217 | |
a8806f03 | 218 | devc = sdi->priv; |
ed759a08 | 219 | switch (key) { |
a8806f03 BV |
220 | case SR_CONF_LIMIT_SAMPLES: |
221 | *data = g_variant_new_uint64(devc->limit_samples); | |
222 | break; | |
bc7be4a9 | 223 | case SR_CONF_SAMPLE_INTERVAL: |
df035528 | 224 | si = kecheng_kc_330b_sample_intervals[devc->sample_interval]; |
bc7be4a9 BV |
225 | rational[0] = g_variant_new_uint64(si[0]); |
226 | rational[1] = g_variant_new_uint64(si[1]); | |
227 | *data = g_variant_new_tuple(rational, 2); | |
228 | break; | |
229 | case SR_CONF_DATALOG: | |
85ed4ab3 BV |
230 | /* There really isn't a way to be sure the device is logging. */ |
231 | return SR_ERR_NA; | |
bc7be4a9 BV |
232 | break; |
233 | case SR_CONF_SPL_WEIGHT_FREQ: | |
234 | if (devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A) | |
235 | *data = g_variant_new_string("A"); | |
236 | else | |
237 | *data = g_variant_new_string("C"); | |
238 | break; | |
239 | case SR_CONF_SPL_WEIGHT_TIME: | |
240 | if (devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F) | |
241 | *data = g_variant_new_string("F"); | |
242 | else | |
243 | *data = g_variant_new_string("S"); | |
244 | break; | |
245 | case SR_CONF_DATA_SOURCE: | |
246 | if (devc->data_source == DATA_SOURCE_LIVE) | |
247 | *data = g_variant_new_string("Live"); | |
248 | else | |
249 | *data = g_variant_new_string("Memory"); | |
250 | break; | |
ed759a08 BV |
251 | default: |
252 | return SR_ERR_NA; | |
253 | } | |
254 | ||
a8806f03 | 255 | return SR_OK; |
ed759a08 BV |
256 | } |
257 | ||
584560f1 | 258 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 259 | const struct sr_channel_group *cg) |
ed759a08 | 260 | { |
a8806f03 | 261 | struct dev_context *devc; |
bc7be4a9 BV |
262 | uint64_t p, q; |
263 | unsigned int i; | |
264 | int tmp, ret; | |
265 | const char *tmp_str; | |
ed759a08 | 266 | |
53b4680f | 267 | (void)cg; |
d3c74a6f | 268 | |
ed759a08 BV |
269 | if (sdi->status != SR_ST_ACTIVE) |
270 | return SR_ERR_DEV_CLOSED; | |
271 | ||
a8806f03 | 272 | devc = sdi->priv; |
ed759a08 BV |
273 | ret = SR_OK; |
274 | switch (key) { | |
a8806f03 BV |
275 | case SR_CONF_LIMIT_SAMPLES: |
276 | devc->limit_samples = g_variant_get_uint64(data); | |
277 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
278 | devc->limit_samples); | |
279 | break; | |
bc7be4a9 BV |
280 | case SR_CONF_SAMPLE_INTERVAL: |
281 | g_variant_get(data, "(tt)", &p, &q); | |
df035528 BV |
282 | for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) { |
283 | if (kecheng_kc_330b_sample_intervals[i][0] != p || kecheng_kc_330b_sample_intervals[i][1] != q) | |
bc7be4a9 BV |
284 | continue; |
285 | devc->sample_interval = i; | |
85ed4ab3 | 286 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
287 | break; |
288 | } | |
df035528 | 289 | if (i == ARRAY_SIZE(kecheng_kc_330b_sample_intervals)) |
bc7be4a9 BV |
290 | ret = SR_ERR_ARG; |
291 | break; | |
292 | case SR_CONF_SPL_WEIGHT_FREQ: | |
293 | tmp_str = g_variant_get_string(data, NULL); | |
294 | if (!strcmp(tmp_str, "A")) | |
295 | tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
296 | else if (!strcmp(tmp_str, "C")) | |
297 | tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
298 | else | |
299 | return SR_ERR_ARG; | |
300 | devc->mqflags &= ~(SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C); | |
301 | devc->mqflags |= tmp; | |
85ed4ab3 | 302 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
303 | break; |
304 | case SR_CONF_SPL_WEIGHT_TIME: | |
305 | tmp_str = g_variant_get_string(data, NULL); | |
306 | if (!strcmp(tmp_str, "F")) | |
307 | tmp = SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
308 | else if (!strcmp(tmp_str, "S")) | |
309 | tmp = SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
310 | else | |
311 | return SR_ERR_ARG; | |
312 | devc->mqflags &= ~(SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S); | |
313 | devc->mqflags |= tmp; | |
85ed4ab3 | 314 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
315 | break; |
316 | case SR_CONF_DATA_SOURCE: | |
317 | tmp_str = g_variant_get_string(data, NULL); | |
318 | if (!strcmp(tmp_str, "Live")) | |
319 | devc->data_source = DATA_SOURCE_LIVE; | |
320 | else if (!strcmp(tmp_str, "Memory")) | |
321 | devc->data_source = DATA_SOURCE_MEMORY; | |
322 | else | |
323 | return SR_ERR; | |
85ed4ab3 | 324 | devc->config_dirty = TRUE; |
bc7be4a9 | 325 | break; |
ed759a08 BV |
326 | default: |
327 | ret = SR_ERR_NA; | |
328 | } | |
329 | ||
330 | return ret; | |
331 | } | |
332 | ||
584560f1 | 333 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 334 | const struct sr_channel_group *cg) |
ed759a08 | 335 | { |
bc7be4a9 BV |
336 | GVariant *tuple, *rational[2]; |
337 | GVariantBuilder gvb; | |
338 | unsigned int i; | |
ed759a08 BV |
339 | |
340 | (void)sdi; | |
53b4680f | 341 | (void)cg; |
ed759a08 | 342 | |
ed759a08 | 343 | switch (key) { |
a8806f03 | 344 | case SR_CONF_DEVICE_OPTIONS: |
584560f1 | 345 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 346 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
a8806f03 | 347 | break; |
bc7be4a9 BV |
348 | case SR_CONF_SAMPLE_INTERVAL: |
349 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
df035528 BV |
350 | for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) { |
351 | rational[0] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][0]); | |
352 | rational[1] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][1]); | |
bc7be4a9 BV |
353 | tuple = g_variant_new_tuple(rational, 2); |
354 | g_variant_builder_add_value(&gvb, tuple); | |
355 | } | |
356 | *data = g_variant_builder_end(&gvb); | |
357 | break; | |
358 | case SR_CONF_SPL_WEIGHT_FREQ: | |
359 | *data = g_variant_new_strv(weight_freq, ARRAY_SIZE(weight_freq)); | |
360 | break; | |
361 | case SR_CONF_SPL_WEIGHT_TIME: | |
362 | *data = g_variant_new_strv(weight_time, ARRAY_SIZE(weight_time)); | |
363 | break; | |
364 | case SR_CONF_DATA_SOURCE: | |
365 | *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources)); | |
366 | break; | |
ed759a08 BV |
367 | default: |
368 | return SR_ERR_NA; | |
369 | } | |
370 | ||
a8806f03 | 371 | return SR_OK; |
ed759a08 BV |
372 | } |
373 | ||
695dc859 | 374 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
ed759a08 | 375 | { |
4f840ce9 | 376 | struct sr_dev_driver *di = sdi->driver; |
bc7be4a9 BV |
377 | struct drv_context *drvc; |
378 | struct dev_context *devc; | |
85ed4ab3 BV |
379 | struct sr_datafeed_packet packet; |
380 | struct sr_datafeed_meta meta; | |
381 | struct sr_config *src; | |
bc7be4a9 | 382 | struct sr_usb_dev_inst *usb; |
85ed4ab3 | 383 | GVariant *gvar, *rational[2]; |
85ed4ab3 | 384 | const uint64_t *si; |
7f22cd95 | 385 | int req_len, buf_len, len, ret; |
85ed4ab3 | 386 | unsigned char buf[9]; |
ed759a08 BV |
387 | |
388 | if (sdi->status != SR_ST_ACTIVE) | |
389 | return SR_ERR_DEV_CLOSED; | |
390 | ||
41812aca | 391 | drvc = di->context; |
bc7be4a9 BV |
392 | devc = sdi->priv; |
393 | usb = sdi->conn; | |
394 | ||
bc7be4a9 BV |
395 | devc->num_samples = 0; |
396 | ||
695dc859 | 397 | std_session_send_df_header(sdi, LOG_PREFIX); |
85ed4ab3 | 398 | |
f336618c | 399 | if (devc->data_source == DATA_SOURCE_LIVE) { |
85ed4ab3 BV |
400 | /* Force configuration. */ |
401 | kecheng_kc_330b_configure(sdi); | |
402 | ||
f336618c BV |
403 | if (kecheng_kc_330b_status_get(sdi, &ret) != SR_OK) |
404 | return SR_ERR; | |
f336618c BV |
405 | if (ret != DEVICE_ACTIVE) { |
406 | sr_err("Device is inactive"); | |
407 | /* Still continue though, since the device will | |
408 | * just return 30.0 until the user hits the button | |
409 | * on the device -- and then start feeding good | |
410 | * samples back. */ | |
411 | } | |
85ed4ab3 BV |
412 | } else { |
413 | if (kecheng_kc_330b_log_info_get(sdi, buf) != SR_OK) | |
414 | return SR_ERR; | |
7f22cd95 BV |
415 | devc->mqflags = buf[4] ? SR_MQFLAG_SPL_TIME_WEIGHT_S : SR_MQFLAG_SPL_TIME_WEIGHT_F; |
416 | devc->mqflags |= buf[5] ? SR_MQFLAG_SPL_FREQ_WEIGHT_C : SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
85ed4ab3 BV |
417 | devc->stored_samples = (buf[7] << 8) | buf[8]; |
418 | if (devc->stored_samples == 0) { | |
419 | /* Notify frontend of empty log by sending start/end packets. */ | |
695dc859 | 420 | std_session_send_df_end(sdi, LOG_PREFIX); |
85ed4ab3 BV |
421 | return SR_OK; |
422 | } | |
423 | ||
424 | if (devc->limit_samples && devc->limit_samples < devc->stored_samples) | |
425 | devc->stored_samples = devc->limit_samples; | |
426 | ||
427 | si = kecheng_kc_330b_sample_intervals[buf[1]]; | |
428 | rational[0] = g_variant_new_uint64(si[0]); | |
429 | rational[1] = g_variant_new_uint64(si[1]); | |
430 | gvar = g_variant_new_tuple(rational, 2); | |
431 | src = sr_config_new(SR_CONF_SAMPLE_INTERVAL, gvar); | |
432 | packet.type = SR_DF_META; | |
433 | packet.payload = &meta; | |
434 | meta.config = g_slist_append(NULL, src); | |
695dc859 | 435 | sr_session_send(sdi, &packet); |
85ed4ab3 | 436 | g_free(src); |
f336618c BV |
437 | } |
438 | ||
df035528 BV |
439 | if (!(devc->xfer = libusb_alloc_transfer(0))) |
440 | return SR_ERR; | |
441 | ||
102f1239 | 442 | usb_source_add(sdi->session, drvc->sr_ctx, 10, |
6c60facc | 443 | kecheng_kc_330b_handle_events, (void *)sdi); |
bc7be4a9 | 444 | |
85ed4ab3 BV |
445 | if (devc->data_source == DATA_SOURCE_LIVE) { |
446 | buf[0] = CMD_GET_LIVE_SPL; | |
447 | buf_len = 1; | |
448 | devc->state = LIVE_SPL_WAIT; | |
449 | devc->last_live_request = g_get_monotonic_time() / 1000; | |
450 | req_len = 3; | |
451 | } else { | |
452 | buf[0] = CMD_GET_LOG_DATA; | |
453 | buf[1] = 0; | |
454 | buf[2] = 0; | |
455 | buf_len = 4; | |
456 | devc->state = LOG_DATA_WAIT; | |
457 | if (devc->stored_samples < 63) | |
458 | buf[3] = devc->stored_samples; | |
459 | else | |
460 | buf[3] = 63; | |
461 | /* Command ack byte + 2 bytes per sample. */ | |
462 | req_len = 1 + buf[3] * 2; | |
463 | } | |
464 | ||
465 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, buf_len, &len, 5); | |
bc7be4a9 BV |
466 | if (ret != 0 || len != 1) { |
467 | sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret)); | |
df035528 BV |
468 | libusb_free_transfer(devc->xfer); |
469 | return SR_ERR; | |
470 | } | |
df035528 BV |
471 | |
472 | libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf, | |
85ed4ab3 | 473 | req_len, kecheng_kc_330b_receive_transfer, (void *)sdi, 15); |
df035528 BV |
474 | if (libusb_submit_transfer(devc->xfer) != 0) { |
475 | libusb_free_transfer(devc->xfer); | |
bc7be4a9 BV |
476 | return SR_ERR; |
477 | } | |
ed759a08 BV |
478 | |
479 | return SR_OK; | |
480 | } | |
481 | ||
695dc859 | 482 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
ed759a08 | 483 | { |
85ed4ab3 BV |
484 | struct dev_context *devc; |
485 | ||
ed759a08 BV |
486 | if (sdi->status != SR_ST_ACTIVE) |
487 | return SR_ERR_DEV_CLOSED; | |
488 | ||
df035528 BV |
489 | /* Signal USB transfer handler to clean up and stop. */ |
490 | sdi->status = SR_ST_STOPPING; | |
ed759a08 | 491 | |
85ed4ab3 BV |
492 | devc = sdi->priv; |
493 | if (devc->data_source == DATA_SOURCE_MEMORY && devc->config_dirty) { | |
494 | /* The protocol doesn't have a command to clear stored data; | |
495 | * it clears it whenever new configuration is set. That means | |
496 | * we can't just configure the device any time we want when | |
497 | * it's in DATA_SOURCE_MEMORY mode. The only safe time to do | |
498 | * it is now, when we're sure we've pulled in all the stored | |
499 | * data. */ | |
500 | kecheng_kc_330b_configure(sdi); | |
501 | } | |
502 | ||
ed759a08 BV |
503 | return SR_OK; |
504 | } | |
505 | ||
506 | SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info = { | |
507 | .name = "kecheng-kc-330b", | |
508 | .longname = "Kecheng KC-330B", | |
509 | .api_version = 1, | |
c2fdcc25 | 510 | .init = std_init, |
700d6b64 | 511 | .cleanup = std_cleanup, |
ed759a08 | 512 | .scan = scan, |
c01bf34c | 513 | .dev_list = std_dev_list, |
a6630742 | 514 | .dev_clear = NULL, |
ed759a08 BV |
515 | .config_get = config_get, |
516 | .config_set = config_set, | |
517 | .config_list = config_list, | |
518 | .dev_open = dev_open, | |
519 | .dev_close = dev_close, | |
520 | .dev_acquisition_start = dev_acquisition_start, | |
521 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 522 | .context = NULL, |
ed759a08 | 523 | }; |