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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 | ||
bc7be4a9 | 20 | #include <string.h> |
ed759a08 BV |
21 | #include "protocol.h" |
22 | ||
a8806f03 BV |
23 | #define USB_CONN "1041.8101" |
24 | #define VENDOR "Kecheng" | |
25 | #define USB_INTERFACE 0 | |
a8806f03 | 26 | |
f254bc4b | 27 | static const uint32_t devopts[] = { |
a8806f03 | 28 | SR_CONF_SOUNDLEVELMETER, |
a8806f03 | 29 | SR_CONF_CONTINUOUS, |
5827f61b BV |
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, | |
bc7be4a9 BV |
36 | }; |
37 | ||
df035528 | 38 | SR_PRIV const uint64_t kecheng_kc_330b_sample_intervals[][2] = { |
bc7be4a9 BV |
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", | |
a8806f03 BV |
61 | }; |
62 | ||
ed759a08 BV |
63 | SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info; |
64 | static struct sr_dev_driver *di = &kecheng_kc_330b_driver_info; | |
65 | ||
66 | ||
67 | static int init(struct sr_context *sr_ctx) | |
68 | { | |
69 | return std_init(sr_ctx, di, LOG_PREFIX); | |
70 | } | |
71 | ||
a8806f03 BV |
72 | static int scan_kecheng(struct sr_usb_dev_inst *usb, char **model) |
73 | { | |
74 | struct drv_context *drvc; | |
75 | int len, ret; | |
76 | unsigned char cmd, buf[32]; | |
77 | ||
78 | drvc = di->priv; | |
79 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) | |
80 | return SR_ERR; | |
81 | ||
82 | cmd = CMD_IDENTIFY; | |
83 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &cmd, 1, &len, 5); | |
84 | if (ret != 0) { | |
85 | libusb_close(usb->devhdl); | |
86 | sr_dbg("Failed to send Identify command: %s", libusb_error_name(ret)); | |
87 | return SR_ERR; | |
88 | } | |
89 | ||
90 | ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 32, &len, 10); | |
91 | if (ret != 0) { | |
92 | libusb_close(usb->devhdl); | |
93 | sr_dbg("Failed to receive response: %s", libusb_error_name(ret)); | |
94 | return SR_ERR; | |
95 | } | |
96 | ||
97 | libusb_close(usb->devhdl); | |
98 | usb->devhdl = NULL; | |
99 | ||
100 | if (len < 2 || buf[0] != (CMD_IDENTIFY | 0x80) || buf[1] > 30) { | |
101 | sr_dbg("Invalid response to Identify command"); | |
102 | return SR_ERR; | |
103 | } | |
104 | ||
105 | buf[buf[1] + 2] = '\x0'; | |
106 | *model = g_strndup((const gchar *)buf + 2, 30); | |
a8806f03 BV |
107 | |
108 | return SR_OK; | |
109 | } | |
110 | ||
ed759a08 BV |
111 | static GSList *scan(GSList *options) |
112 | { | |
113 | struct drv_context *drvc; | |
a8806f03 BV |
114 | struct dev_context *devc; |
115 | struct sr_dev_inst *sdi; | |
ba7dd8bb | 116 | struct sr_channel *ch; |
a8806f03 BV |
117 | GSList *usb_devices, *devices, *l; |
118 | char *model; | |
ed759a08 BV |
119 | |
120 | (void)options; | |
121 | ||
ed759a08 BV |
122 | drvc = di->priv; |
123 | drvc->instances = NULL; | |
124 | ||
a8806f03 BV |
125 | devices = NULL; |
126 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_CONN))) { | |
127 | /* We have a list of sr_usb_dev_inst matching the connection | |
128 | * string. Wrap them in sr_dev_inst and we're done. */ | |
129 | for (l = usb_devices; l; l = l->next) { | |
130 | if (scan_kecheng(l->data, &model) != SR_OK) | |
131 | continue; | |
0af636be UH |
132 | sdi = sr_dev_inst_new(); |
133 | sdi->status = SR_ST_INACTIVE; | |
134 | sdi->vendor = g_strdup(VENDOR); | |
135 | sdi->model = model; /* Already g_strndup()'d. */ | |
a8806f03 BV |
136 | sdi->driver = di; |
137 | sdi->inst_type = SR_INST_USB; | |
138 | sdi->conn = l->data; | |
3f239f08 | 139 | if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "SPL"))) |
a8806f03 | 140 | return NULL; |
ba7dd8bb | 141 | sdi->channels = g_slist_append(sdi->channels, ch); |
a8806f03 BV |
142 | |
143 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
144 | sr_dbg("Device context malloc failed."); | |
145 | return NULL; | |
146 | } | |
147 | sdi->priv = devc; | |
148 | devc->limit_samples = 0; | |
bc7be4a9 BV |
149 | /* The protocol provides no way to read the current |
150 | * settings, so we'll enforce these. */ | |
151 | devc->sample_interval = DEFAULT_SAMPLE_INTERVAL; | |
152 | devc->alarm_low = DEFAULT_ALARM_LOW; | |
153 | devc->alarm_high = DEFAULT_ALARM_HIGH; | |
154 | devc->mqflags = DEFAULT_WEIGHT_TIME | DEFAULT_WEIGHT_FREQ; | |
155 | devc->data_source = DEFAULT_DATA_SOURCE; | |
85ed4ab3 | 156 | devc->config_dirty = FALSE; |
bc7be4a9 BV |
157 | |
158 | /* TODO: Set date/time? */ | |
a8806f03 BV |
159 | |
160 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
161 | devices = g_slist_append(devices, sdi); | |
162 | } | |
163 | g_slist_free(usb_devices); | |
164 | } else | |
165 | g_slist_free_full(usb_devices, g_free); | |
ed759a08 BV |
166 | |
167 | return devices; | |
168 | } | |
169 | ||
170 | static GSList *dev_list(void) | |
171 | { | |
ce4d26dd | 172 | return ((struct drv_context *)(di->priv))->instances; |
ed759a08 BV |
173 | } |
174 | ||
ed759a08 BV |
175 | static int dev_open(struct sr_dev_inst *sdi) |
176 | { | |
a8806f03 BV |
177 | struct drv_context *drvc; |
178 | struct sr_usb_dev_inst *usb; | |
179 | int ret; | |
180 | ||
181 | if (!(drvc = di->priv)) { | |
182 | sr_err("Driver was not initialized."); | |
183 | return SR_ERR; | |
184 | } | |
185 | ||
186 | usb = sdi->conn; | |
ed759a08 | 187 | |
a8806f03 BV |
188 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) |
189 | return SR_ERR; | |
ed759a08 | 190 | |
85ed4ab3 BV |
191 | if ((ret = libusb_set_configuration(usb->devhdl, 1))) { |
192 | sr_err("Failed to set configuration: %s.", libusb_error_name(ret)); | |
193 | return SR_ERR; | |
194 | } | |
195 | ||
a8806f03 BV |
196 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) { |
197 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
198 | return SR_ERR; | |
199 | } | |
ed759a08 BV |
200 | sdi->status = SR_ST_ACTIVE; |
201 | ||
a8806f03 | 202 | return ret; |
ed759a08 BV |
203 | } |
204 | ||
205 | static int dev_close(struct sr_dev_inst *sdi) | |
206 | { | |
85ed4ab3 | 207 | struct dev_context *devc; |
a8806f03 BV |
208 | struct sr_usb_dev_inst *usb; |
209 | ||
210 | if (!di->priv) { | |
211 | sr_err("Driver was not initialized."); | |
212 | return SR_ERR; | |
213 | } | |
214 | ||
215 | usb = sdi->conn; | |
ed759a08 | 216 | |
a8806f03 BV |
217 | if (!usb->devhdl) |
218 | /* Nothing to do. */ | |
219 | return SR_OK; | |
ed759a08 | 220 | |
85ed4ab3 BV |
221 | /* This allows a frontend to configure the device without ever |
222 | * doing an acquisition step. */ | |
223 | devc = sdi->priv; | |
224 | if (!devc->config_dirty) | |
225 | kecheng_kc_330b_configure(sdi); | |
226 | ||
a8806f03 BV |
227 | libusb_release_interface(usb->devhdl, USB_INTERFACE); |
228 | libusb_close(usb->devhdl); | |
229 | usb->devhdl = NULL; | |
ed759a08 BV |
230 | sdi->status = SR_ST_INACTIVE; |
231 | ||
232 | return SR_OK; | |
233 | } | |
234 | ||
235 | static int cleanup(void) | |
236 | { | |
a8806f03 BV |
237 | int ret; |
238 | struct drv_context *drvc; | |
ed759a08 | 239 | |
a8806f03 BV |
240 | if (!(drvc = di->priv)) |
241 | /* Can get called on an unused driver, doesn't matter. */ | |
242 | return SR_OK; | |
ed759a08 | 243 | |
a6630742 BV |
244 | |
245 | ret = std_dev_clear(di, NULL); | |
a8806f03 BV |
246 | g_free(drvc); |
247 | di->priv = NULL; | |
248 | ||
249 | return ret; | |
ed759a08 BV |
250 | } |
251 | ||
584560f1 | 252 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 253 | const struct sr_channel_group *cg) |
ed759a08 | 254 | { |
a8806f03 | 255 | struct dev_context *devc; |
bc7be4a9 BV |
256 | GVariant *rational[2]; |
257 | const uint64_t *si; | |
ed759a08 | 258 | |
53b4680f | 259 | (void)cg; |
d3c74a6f | 260 | |
a8806f03 | 261 | devc = sdi->priv; |
ed759a08 | 262 | switch (key) { |
a8806f03 BV |
263 | case SR_CONF_LIMIT_SAMPLES: |
264 | *data = g_variant_new_uint64(devc->limit_samples); | |
265 | break; | |
bc7be4a9 | 266 | case SR_CONF_SAMPLE_INTERVAL: |
df035528 | 267 | si = kecheng_kc_330b_sample_intervals[devc->sample_interval]; |
bc7be4a9 BV |
268 | rational[0] = g_variant_new_uint64(si[0]); |
269 | rational[1] = g_variant_new_uint64(si[1]); | |
270 | *data = g_variant_new_tuple(rational, 2); | |
271 | break; | |
272 | case SR_CONF_DATALOG: | |
85ed4ab3 BV |
273 | /* There really isn't a way to be sure the device is logging. */ |
274 | return SR_ERR_NA; | |
bc7be4a9 BV |
275 | break; |
276 | case SR_CONF_SPL_WEIGHT_FREQ: | |
277 | if (devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A) | |
278 | *data = g_variant_new_string("A"); | |
279 | else | |
280 | *data = g_variant_new_string("C"); | |
281 | break; | |
282 | case SR_CONF_SPL_WEIGHT_TIME: | |
283 | if (devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F) | |
284 | *data = g_variant_new_string("F"); | |
285 | else | |
286 | *data = g_variant_new_string("S"); | |
287 | break; | |
288 | case SR_CONF_DATA_SOURCE: | |
289 | if (devc->data_source == DATA_SOURCE_LIVE) | |
290 | *data = g_variant_new_string("Live"); | |
291 | else | |
292 | *data = g_variant_new_string("Memory"); | |
293 | break; | |
ed759a08 BV |
294 | default: |
295 | return SR_ERR_NA; | |
296 | } | |
297 | ||
a8806f03 | 298 | return SR_OK; |
ed759a08 BV |
299 | } |
300 | ||
584560f1 | 301 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 302 | const struct sr_channel_group *cg) |
ed759a08 | 303 | { |
a8806f03 | 304 | struct dev_context *devc; |
bc7be4a9 BV |
305 | uint64_t p, q; |
306 | unsigned int i; | |
307 | int tmp, ret; | |
308 | const char *tmp_str; | |
ed759a08 | 309 | |
53b4680f | 310 | (void)cg; |
d3c74a6f | 311 | |
ed759a08 BV |
312 | if (sdi->status != SR_ST_ACTIVE) |
313 | return SR_ERR_DEV_CLOSED; | |
314 | ||
a8806f03 BV |
315 | if (!di->priv) { |
316 | sr_err("Driver was not initialized."); | |
317 | return SR_ERR; | |
318 | } | |
319 | ||
320 | devc = sdi->priv; | |
ed759a08 BV |
321 | ret = SR_OK; |
322 | switch (key) { | |
a8806f03 BV |
323 | case SR_CONF_LIMIT_SAMPLES: |
324 | devc->limit_samples = g_variant_get_uint64(data); | |
325 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
326 | devc->limit_samples); | |
327 | break; | |
bc7be4a9 BV |
328 | case SR_CONF_SAMPLE_INTERVAL: |
329 | g_variant_get(data, "(tt)", &p, &q); | |
df035528 BV |
330 | for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) { |
331 | if (kecheng_kc_330b_sample_intervals[i][0] != p || kecheng_kc_330b_sample_intervals[i][1] != q) | |
bc7be4a9 BV |
332 | continue; |
333 | devc->sample_interval = i; | |
85ed4ab3 | 334 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
335 | break; |
336 | } | |
df035528 | 337 | if (i == ARRAY_SIZE(kecheng_kc_330b_sample_intervals)) |
bc7be4a9 BV |
338 | ret = SR_ERR_ARG; |
339 | break; | |
340 | case SR_CONF_SPL_WEIGHT_FREQ: | |
341 | tmp_str = g_variant_get_string(data, NULL); | |
342 | if (!strcmp(tmp_str, "A")) | |
343 | tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
344 | else if (!strcmp(tmp_str, "C")) | |
345 | tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
346 | else | |
347 | return SR_ERR_ARG; | |
348 | devc->mqflags &= ~(SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C); | |
349 | devc->mqflags |= tmp; | |
85ed4ab3 | 350 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
351 | break; |
352 | case SR_CONF_SPL_WEIGHT_TIME: | |
353 | tmp_str = g_variant_get_string(data, NULL); | |
354 | if (!strcmp(tmp_str, "F")) | |
355 | tmp = SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
356 | else if (!strcmp(tmp_str, "S")) | |
357 | tmp = SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
358 | else | |
359 | return SR_ERR_ARG; | |
360 | devc->mqflags &= ~(SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S); | |
361 | devc->mqflags |= tmp; | |
85ed4ab3 | 362 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
363 | break; |
364 | case SR_CONF_DATA_SOURCE: | |
365 | tmp_str = g_variant_get_string(data, NULL); | |
366 | if (!strcmp(tmp_str, "Live")) | |
367 | devc->data_source = DATA_SOURCE_LIVE; | |
368 | else if (!strcmp(tmp_str, "Memory")) | |
369 | devc->data_source = DATA_SOURCE_MEMORY; | |
370 | else | |
371 | return SR_ERR; | |
85ed4ab3 | 372 | devc->config_dirty = TRUE; |
bc7be4a9 | 373 | break; |
ed759a08 BV |
374 | default: |
375 | ret = SR_ERR_NA; | |
376 | } | |
377 | ||
378 | return ret; | |
379 | } | |
380 | ||
584560f1 | 381 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 382 | const struct sr_channel_group *cg) |
ed759a08 | 383 | { |
bc7be4a9 BV |
384 | GVariant *tuple, *rational[2]; |
385 | GVariantBuilder gvb; | |
386 | unsigned int i; | |
ed759a08 BV |
387 | |
388 | (void)sdi; | |
53b4680f | 389 | (void)cg; |
ed759a08 | 390 | |
ed759a08 | 391 | switch (key) { |
a8806f03 | 392 | case SR_CONF_DEVICE_OPTIONS: |
584560f1 | 393 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 394 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
a8806f03 | 395 | break; |
bc7be4a9 BV |
396 | case SR_CONF_SAMPLE_INTERVAL: |
397 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
df035528 BV |
398 | for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) { |
399 | rational[0] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][0]); | |
400 | rational[1] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][1]); | |
bc7be4a9 BV |
401 | tuple = g_variant_new_tuple(rational, 2); |
402 | g_variant_builder_add_value(&gvb, tuple); | |
403 | } | |
404 | *data = g_variant_builder_end(&gvb); | |
405 | break; | |
406 | case SR_CONF_SPL_WEIGHT_FREQ: | |
407 | *data = g_variant_new_strv(weight_freq, ARRAY_SIZE(weight_freq)); | |
408 | break; | |
409 | case SR_CONF_SPL_WEIGHT_TIME: | |
410 | *data = g_variant_new_strv(weight_time, ARRAY_SIZE(weight_time)); | |
411 | break; | |
412 | case SR_CONF_DATA_SOURCE: | |
413 | *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources)); | |
414 | break; | |
ed759a08 BV |
415 | default: |
416 | return SR_ERR_NA; | |
417 | } | |
418 | ||
a8806f03 | 419 | return SR_OK; |
ed759a08 BV |
420 | } |
421 | ||
422 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, | |
85ed4ab3 | 423 | void *cb_data) |
ed759a08 | 424 | { |
bc7be4a9 BV |
425 | struct drv_context *drvc; |
426 | struct dev_context *devc; | |
85ed4ab3 BV |
427 | struct sr_datafeed_packet packet; |
428 | struct sr_datafeed_meta meta; | |
429 | struct sr_config *src; | |
bc7be4a9 | 430 | struct sr_usb_dev_inst *usb; |
85ed4ab3 | 431 | GVariant *gvar, *rational[2]; |
85ed4ab3 | 432 | const uint64_t *si; |
7f22cd95 | 433 | int req_len, buf_len, len, ret; |
85ed4ab3 | 434 | unsigned char buf[9]; |
ed759a08 BV |
435 | |
436 | if (sdi->status != SR_ST_ACTIVE) | |
437 | return SR_ERR_DEV_CLOSED; | |
438 | ||
bc7be4a9 BV |
439 | drvc = di->priv; |
440 | devc = sdi->priv; | |
441 | usb = sdi->conn; | |
442 | ||
443 | devc->cb_data = cb_data; | |
444 | devc->num_samples = 0; | |
445 | ||
85ed4ab3 BV |
446 | /* Send header packet to the session bus. */ |
447 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
448 | ||
f336618c | 449 | if (devc->data_source == DATA_SOURCE_LIVE) { |
85ed4ab3 BV |
450 | /* Force configuration. */ |
451 | kecheng_kc_330b_configure(sdi); | |
452 | ||
f336618c BV |
453 | if (kecheng_kc_330b_status_get(sdi, &ret) != SR_OK) |
454 | return SR_ERR; | |
f336618c BV |
455 | if (ret != DEVICE_ACTIVE) { |
456 | sr_err("Device is inactive"); | |
457 | /* Still continue though, since the device will | |
458 | * just return 30.0 until the user hits the button | |
459 | * on the device -- and then start feeding good | |
460 | * samples back. */ | |
461 | } | |
85ed4ab3 BV |
462 | } else { |
463 | if (kecheng_kc_330b_log_info_get(sdi, buf) != SR_OK) | |
464 | return SR_ERR; | |
7f22cd95 BV |
465 | devc->mqflags = buf[4] ? SR_MQFLAG_SPL_TIME_WEIGHT_S : SR_MQFLAG_SPL_TIME_WEIGHT_F; |
466 | devc->mqflags |= buf[5] ? SR_MQFLAG_SPL_FREQ_WEIGHT_C : SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
85ed4ab3 BV |
467 | devc->stored_samples = (buf[7] << 8) | buf[8]; |
468 | if (devc->stored_samples == 0) { | |
469 | /* Notify frontend of empty log by sending start/end packets. */ | |
470 | packet.type = SR_DF_END; | |
471 | sr_session_send(cb_data, &packet); | |
472 | return SR_OK; | |
473 | } | |
474 | ||
475 | if (devc->limit_samples && devc->limit_samples < devc->stored_samples) | |
476 | devc->stored_samples = devc->limit_samples; | |
477 | ||
478 | si = kecheng_kc_330b_sample_intervals[buf[1]]; | |
479 | rational[0] = g_variant_new_uint64(si[0]); | |
480 | rational[1] = g_variant_new_uint64(si[1]); | |
481 | gvar = g_variant_new_tuple(rational, 2); | |
482 | src = sr_config_new(SR_CONF_SAMPLE_INTERVAL, gvar); | |
483 | packet.type = SR_DF_META; | |
484 | packet.payload = &meta; | |
485 | meta.config = g_slist_append(NULL, src); | |
486 | sr_session_send(devc->cb_data, &packet); | |
487 | g_free(src); | |
f336618c BV |
488 | } |
489 | ||
df035528 BV |
490 | if (!(devc->xfer = libusb_alloc_transfer(0))) |
491 | return SR_ERR; | |
492 | ||
102f1239 | 493 | usb_source_add(sdi->session, drvc->sr_ctx, 10, |
6c60facc | 494 | kecheng_kc_330b_handle_events, (void *)sdi); |
bc7be4a9 | 495 | |
85ed4ab3 BV |
496 | if (devc->data_source == DATA_SOURCE_LIVE) { |
497 | buf[0] = CMD_GET_LIVE_SPL; | |
498 | buf_len = 1; | |
499 | devc->state = LIVE_SPL_WAIT; | |
500 | devc->last_live_request = g_get_monotonic_time() / 1000; | |
501 | req_len = 3; | |
502 | } else { | |
503 | buf[0] = CMD_GET_LOG_DATA; | |
504 | buf[1] = 0; | |
505 | buf[2] = 0; | |
506 | buf_len = 4; | |
507 | devc->state = LOG_DATA_WAIT; | |
508 | if (devc->stored_samples < 63) | |
509 | buf[3] = devc->stored_samples; | |
510 | else | |
511 | buf[3] = 63; | |
512 | /* Command ack byte + 2 bytes per sample. */ | |
513 | req_len = 1 + buf[3] * 2; | |
514 | } | |
515 | ||
516 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, buf_len, &len, 5); | |
bc7be4a9 BV |
517 | if (ret != 0 || len != 1) { |
518 | sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret)); | |
df035528 BV |
519 | libusb_free_transfer(devc->xfer); |
520 | return SR_ERR; | |
521 | } | |
df035528 BV |
522 | |
523 | libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf, | |
85ed4ab3 | 524 | req_len, kecheng_kc_330b_receive_transfer, (void *)sdi, 15); |
df035528 BV |
525 | if (libusb_submit_transfer(devc->xfer) != 0) { |
526 | libusb_free_transfer(devc->xfer); | |
bc7be4a9 BV |
527 | return SR_ERR; |
528 | } | |
ed759a08 BV |
529 | |
530 | return SR_OK; | |
531 | } | |
532 | ||
533 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
534 | { | |
85ed4ab3 BV |
535 | struct dev_context *devc; |
536 | ||
ed759a08 BV |
537 | (void)cb_data; |
538 | ||
539 | if (sdi->status != SR_ST_ACTIVE) | |
540 | return SR_ERR_DEV_CLOSED; | |
541 | ||
df035528 BV |
542 | /* Signal USB transfer handler to clean up and stop. */ |
543 | sdi->status = SR_ST_STOPPING; | |
ed759a08 | 544 | |
85ed4ab3 BV |
545 | devc = sdi->priv; |
546 | if (devc->data_source == DATA_SOURCE_MEMORY && devc->config_dirty) { | |
547 | /* The protocol doesn't have a command to clear stored data; | |
548 | * it clears it whenever new configuration is set. That means | |
549 | * we can't just configure the device any time we want when | |
550 | * it's in DATA_SOURCE_MEMORY mode. The only safe time to do | |
551 | * it is now, when we're sure we've pulled in all the stored | |
552 | * data. */ | |
553 | kecheng_kc_330b_configure(sdi); | |
554 | } | |
555 | ||
ed759a08 BV |
556 | return SR_OK; |
557 | } | |
558 | ||
559 | SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info = { | |
560 | .name = "kecheng-kc-330b", | |
561 | .longname = "Kecheng KC-330B", | |
562 | .api_version = 1, | |
563 | .init = init, | |
564 | .cleanup = cleanup, | |
565 | .scan = scan, | |
566 | .dev_list = dev_list, | |
a6630742 | 567 | .dev_clear = NULL, |
ed759a08 BV |
568 | .config_get = config_get, |
569 | .config_set = config_set, | |
570 | .config_list = config_list, | |
571 | .dev_open = dev_open, | |
572 | .dev_close = dev_close, | |
573 | .dev_acquisition_start = dev_acquisition_start, | |
574 | .dev_acquisition_stop = dev_acquisition_stop, | |
575 | .priv = NULL, | |
576 | }; |