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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 BV |
26 | |
27 | static const int32_t hwcaps[] = { | |
28 | SR_CONF_SOUNDLEVELMETER, | |
29 | SR_CONF_LIMIT_SAMPLES, | |
30 | SR_CONF_CONTINUOUS, | |
bc7be4a9 BV |
31 | SR_CONF_DATALOG, |
32 | SR_CONF_SPL_WEIGHT_FREQ, | |
33 | SR_CONF_SPL_WEIGHT_TIME, | |
34 | SR_CONF_DATA_SOURCE, | |
35 | }; | |
36 | ||
df035528 | 37 | SR_PRIV const uint64_t kecheng_kc_330b_sample_intervals[][2] = { |
bc7be4a9 BV |
38 | { 1, 8 }, |
39 | { 1, 2 }, | |
40 | { 1, 1 }, | |
41 | { 2, 1 }, | |
42 | { 5, 1 }, | |
43 | { 10, 1 }, | |
44 | { 60, 1 }, | |
45 | }; | |
46 | ||
47 | static const char *weight_freq[] = { | |
48 | "A", | |
49 | "C", | |
50 | }; | |
51 | ||
52 | static const char *weight_time[] = { | |
53 | "F", | |
54 | "S", | |
55 | }; | |
56 | ||
57 | static const char *data_sources[] = { | |
58 | "Live", | |
59 | "Memory", | |
a8806f03 BV |
60 | }; |
61 | ||
ed759a08 BV |
62 | SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info; |
63 | static struct sr_dev_driver *di = &kecheng_kc_330b_driver_info; | |
64 | ||
65 | ||
66 | static int init(struct sr_context *sr_ctx) | |
67 | { | |
68 | return std_init(sr_ctx, di, LOG_PREFIX); | |
69 | } | |
70 | ||
a8806f03 BV |
71 | static int scan_kecheng(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->priv; | |
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); | |
a8806f03 BV |
106 | |
107 | return SR_OK; | |
108 | } | |
109 | ||
ed759a08 BV |
110 | static GSList *scan(GSList *options) |
111 | { | |
112 | struct drv_context *drvc; | |
a8806f03 BV |
113 | struct dev_context *devc; |
114 | struct sr_dev_inst *sdi; | |
115 | struct sr_probe *probe; | |
116 | GSList *usb_devices, *devices, *l; | |
117 | char *model; | |
ed759a08 BV |
118 | |
119 | (void)options; | |
120 | ||
ed759a08 BV |
121 | drvc = di->priv; |
122 | drvc->instances = NULL; | |
123 | ||
a8806f03 BV |
124 | devices = NULL; |
125 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_CONN))) { | |
126 | /* We have a list of sr_usb_dev_inst matching the connection | |
127 | * string. Wrap them in sr_dev_inst and we're done. */ | |
128 | for (l = usb_devices; l; l = l->next) { | |
129 | if (scan_kecheng(l->data, &model) != SR_OK) | |
130 | continue; | |
131 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, VENDOR, | |
132 | model, NULL))) | |
133 | return NULL; | |
134 | g_free(model); | |
135 | sdi->driver = di; | |
136 | sdi->inst_type = SR_INST_USB; | |
137 | sdi->conn = l->data; | |
138 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "SPL"))) | |
139 | return NULL; | |
140 | sdi->probes = g_slist_append(sdi->probes, probe); | |
141 | ||
142 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
143 | sr_dbg("Device context malloc failed."); | |
144 | return NULL; | |
145 | } | |
146 | sdi->priv = devc; | |
147 | devc->limit_samples = 0; | |
bc7be4a9 BV |
148 | /* The protocol provides no way to read the current |
149 | * settings, so we'll enforce these. */ | |
150 | devc->sample_interval = DEFAULT_SAMPLE_INTERVAL; | |
151 | devc->alarm_low = DEFAULT_ALARM_LOW; | |
152 | devc->alarm_high = DEFAULT_ALARM_HIGH; | |
153 | devc->mqflags = DEFAULT_WEIGHT_TIME | DEFAULT_WEIGHT_FREQ; | |
154 | devc->data_source = DEFAULT_DATA_SOURCE; | |
85ed4ab3 | 155 | devc->config_dirty = FALSE; |
bc7be4a9 BV |
156 | |
157 | /* TODO: Set date/time? */ | |
a8806f03 BV |
158 | |
159 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
160 | devices = g_slist_append(devices, sdi); | |
161 | } | |
162 | g_slist_free(usb_devices); | |
163 | } else | |
164 | g_slist_free_full(usb_devices, g_free); | |
ed759a08 BV |
165 | |
166 | return devices; | |
167 | } | |
168 | ||
169 | static GSList *dev_list(void) | |
170 | { | |
ce4d26dd | 171 | return ((struct drv_context *)(di->priv))->instances; |
ed759a08 BV |
172 | } |
173 | ||
174 | static int dev_clear(void) | |
175 | { | |
176 | return std_dev_clear(di, NULL); | |
177 | } | |
178 | ||
179 | static int dev_open(struct sr_dev_inst *sdi) | |
180 | { | |
a8806f03 BV |
181 | struct drv_context *drvc; |
182 | struct sr_usb_dev_inst *usb; | |
183 | int ret; | |
184 | ||
185 | if (!(drvc = di->priv)) { | |
186 | sr_err("Driver was not initialized."); | |
187 | return SR_ERR; | |
188 | } | |
189 | ||
190 | usb = sdi->conn; | |
ed759a08 | 191 | |
a8806f03 BV |
192 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) |
193 | return SR_ERR; | |
ed759a08 | 194 | |
85ed4ab3 BV |
195 | if ((ret = libusb_set_configuration(usb->devhdl, 1))) { |
196 | sr_err("Failed to set configuration: %s.", libusb_error_name(ret)); | |
197 | return SR_ERR; | |
198 | } | |
199 | ||
a8806f03 BV |
200 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) { |
201 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
202 | return SR_ERR; | |
203 | } | |
ed759a08 BV |
204 | sdi->status = SR_ST_ACTIVE; |
205 | ||
a8806f03 | 206 | return ret; |
ed759a08 BV |
207 | } |
208 | ||
209 | static int dev_close(struct sr_dev_inst *sdi) | |
210 | { | |
85ed4ab3 | 211 | struct dev_context *devc; |
a8806f03 BV |
212 | struct sr_usb_dev_inst *usb; |
213 | ||
214 | if (!di->priv) { | |
215 | sr_err("Driver was not initialized."); | |
216 | return SR_ERR; | |
217 | } | |
218 | ||
219 | usb = sdi->conn; | |
ed759a08 | 220 | |
a8806f03 BV |
221 | if (!usb->devhdl) |
222 | /* Nothing to do. */ | |
223 | return SR_OK; | |
ed759a08 | 224 | |
85ed4ab3 BV |
225 | /* This allows a frontend to configure the device without ever |
226 | * doing an acquisition step. */ | |
227 | devc = sdi->priv; | |
228 | if (!devc->config_dirty) | |
229 | kecheng_kc_330b_configure(sdi); | |
230 | ||
a8806f03 BV |
231 | libusb_release_interface(usb->devhdl, USB_INTERFACE); |
232 | libusb_close(usb->devhdl); | |
233 | usb->devhdl = NULL; | |
ed759a08 BV |
234 | sdi->status = SR_ST_INACTIVE; |
235 | ||
236 | return SR_OK; | |
237 | } | |
238 | ||
239 | static int cleanup(void) | |
240 | { | |
a8806f03 BV |
241 | int ret; |
242 | struct drv_context *drvc; | |
ed759a08 | 243 | |
a8806f03 BV |
244 | if (!(drvc = di->priv)) |
245 | /* Can get called on an unused driver, doesn't matter. */ | |
246 | return SR_OK; | |
ed759a08 | 247 | |
a8806f03 BV |
248 | ret = dev_clear(); |
249 | g_free(drvc); | |
250 | di->priv = NULL; | |
251 | ||
252 | return ret; | |
ed759a08 BV |
253 | } |
254 | ||
255 | static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
256 | { | |
a8806f03 | 257 | struct dev_context *devc; |
bc7be4a9 BV |
258 | GVariant *rational[2]; |
259 | const uint64_t *si; | |
ed759a08 | 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 | ||
301 | static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi) | |
302 | { | |
a8806f03 | 303 | struct dev_context *devc; |
bc7be4a9 BV |
304 | uint64_t p, q; |
305 | unsigned int i; | |
306 | int tmp, ret; | |
307 | const char *tmp_str; | |
ed759a08 | 308 | |
ed759a08 BV |
309 | if (sdi->status != SR_ST_ACTIVE) |
310 | return SR_ERR_DEV_CLOSED; | |
311 | ||
a8806f03 BV |
312 | if (!di->priv) { |
313 | sr_err("Driver was not initialized."); | |
314 | return SR_ERR; | |
315 | } | |
316 | ||
317 | devc = sdi->priv; | |
ed759a08 BV |
318 | ret = SR_OK; |
319 | switch (key) { | |
a8806f03 BV |
320 | case SR_CONF_LIMIT_SAMPLES: |
321 | devc->limit_samples = g_variant_get_uint64(data); | |
322 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
323 | devc->limit_samples); | |
324 | break; | |
bc7be4a9 BV |
325 | case SR_CONF_SAMPLE_INTERVAL: |
326 | g_variant_get(data, "(tt)", &p, &q); | |
df035528 BV |
327 | for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) { |
328 | if (kecheng_kc_330b_sample_intervals[i][0] != p || kecheng_kc_330b_sample_intervals[i][1] != q) | |
bc7be4a9 BV |
329 | continue; |
330 | devc->sample_interval = i; | |
85ed4ab3 | 331 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
332 | break; |
333 | } | |
df035528 | 334 | if (i == ARRAY_SIZE(kecheng_kc_330b_sample_intervals)) |
bc7be4a9 BV |
335 | ret = SR_ERR_ARG; |
336 | break; | |
337 | case SR_CONF_SPL_WEIGHT_FREQ: | |
338 | tmp_str = g_variant_get_string(data, NULL); | |
339 | if (!strcmp(tmp_str, "A")) | |
340 | tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
341 | else if (!strcmp(tmp_str, "C")) | |
342 | tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
343 | else | |
344 | return SR_ERR_ARG; | |
345 | devc->mqflags &= ~(SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C); | |
346 | devc->mqflags |= tmp; | |
85ed4ab3 | 347 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
348 | break; |
349 | case SR_CONF_SPL_WEIGHT_TIME: | |
350 | tmp_str = g_variant_get_string(data, NULL); | |
351 | if (!strcmp(tmp_str, "F")) | |
352 | tmp = SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
353 | else if (!strcmp(tmp_str, "S")) | |
354 | tmp = SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
355 | else | |
356 | return SR_ERR_ARG; | |
357 | devc->mqflags &= ~(SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S); | |
358 | devc->mqflags |= tmp; | |
85ed4ab3 | 359 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
360 | break; |
361 | case SR_CONF_DATA_SOURCE: | |
362 | tmp_str = g_variant_get_string(data, NULL); | |
363 | if (!strcmp(tmp_str, "Live")) | |
364 | devc->data_source = DATA_SOURCE_LIVE; | |
365 | else if (!strcmp(tmp_str, "Memory")) | |
366 | devc->data_source = DATA_SOURCE_MEMORY; | |
367 | else | |
368 | return SR_ERR; | |
85ed4ab3 | 369 | devc->config_dirty = TRUE; |
bc7be4a9 | 370 | break; |
ed759a08 BV |
371 | default: |
372 | ret = SR_ERR_NA; | |
373 | } | |
374 | ||
375 | return ret; | |
376 | } | |
377 | ||
378 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
379 | { | |
bc7be4a9 BV |
380 | GVariant *tuple, *rational[2]; |
381 | GVariantBuilder gvb; | |
382 | unsigned int i; | |
ed759a08 BV |
383 | |
384 | (void)sdi; | |
ed759a08 | 385 | |
ed759a08 | 386 | switch (key) { |
a8806f03 BV |
387 | case SR_CONF_DEVICE_OPTIONS: |
388 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
389 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
390 | break; | |
bc7be4a9 BV |
391 | case SR_CONF_SAMPLE_INTERVAL: |
392 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
df035528 BV |
393 | for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) { |
394 | rational[0] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][0]); | |
395 | rational[1] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][1]); | |
bc7be4a9 BV |
396 | tuple = g_variant_new_tuple(rational, 2); |
397 | g_variant_builder_add_value(&gvb, tuple); | |
398 | } | |
399 | *data = g_variant_builder_end(&gvb); | |
400 | break; | |
401 | case SR_CONF_SPL_WEIGHT_FREQ: | |
402 | *data = g_variant_new_strv(weight_freq, ARRAY_SIZE(weight_freq)); | |
403 | break; | |
404 | case SR_CONF_SPL_WEIGHT_TIME: | |
405 | *data = g_variant_new_strv(weight_time, ARRAY_SIZE(weight_time)); | |
406 | break; | |
407 | case SR_CONF_DATA_SOURCE: | |
408 | *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources)); | |
409 | break; | |
ed759a08 BV |
410 | default: |
411 | return SR_ERR_NA; | |
412 | } | |
413 | ||
a8806f03 | 414 | return SR_OK; |
ed759a08 BV |
415 | } |
416 | ||
417 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, | |
85ed4ab3 | 418 | void *cb_data) |
ed759a08 | 419 | { |
bc7be4a9 BV |
420 | struct drv_context *drvc; |
421 | struct dev_context *devc; | |
85ed4ab3 BV |
422 | struct sr_datafeed_packet packet; |
423 | struct sr_datafeed_meta meta; | |
424 | struct sr_config *src; | |
bc7be4a9 | 425 | struct sr_usb_dev_inst *usb; |
85ed4ab3 | 426 | GVariant *gvar, *rational[2]; |
bc7be4a9 | 427 | const struct libusb_pollfd **pfd; |
85ed4ab3 BV |
428 | const uint64_t *si; |
429 | int stored_mqflags, req_len, buf_len, len, ret, i; | |
430 | unsigned char buf[9]; | |
ed759a08 BV |
431 | |
432 | if (sdi->status != SR_ST_ACTIVE) | |
433 | return SR_ERR_DEV_CLOSED; | |
434 | ||
bc7be4a9 BV |
435 | drvc = di->priv; |
436 | devc = sdi->priv; | |
437 | usb = sdi->conn; | |
438 | ||
439 | devc->cb_data = cb_data; | |
440 | devc->num_samples = 0; | |
441 | ||
85ed4ab3 BV |
442 | /* Send header packet to the session bus. */ |
443 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
444 | ||
f336618c | 445 | if (devc->data_source == DATA_SOURCE_LIVE) { |
85ed4ab3 BV |
446 | /* Force configuration. */ |
447 | kecheng_kc_330b_configure(sdi); | |
448 | ||
f336618c BV |
449 | if (kecheng_kc_330b_status_get(sdi, &ret) != SR_OK) |
450 | return SR_ERR; | |
f336618c BV |
451 | if (ret != DEVICE_ACTIVE) { |
452 | sr_err("Device is inactive"); | |
453 | /* Still continue though, since the device will | |
454 | * just return 30.0 until the user hits the button | |
455 | * on the device -- and then start feeding good | |
456 | * samples back. */ | |
457 | } | |
85ed4ab3 BV |
458 | } else { |
459 | if (kecheng_kc_330b_log_info_get(sdi, buf) != SR_OK) | |
460 | return SR_ERR; | |
461 | stored_mqflags = buf[4] ? SR_MQFLAG_SPL_TIME_WEIGHT_S : SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
462 | stored_mqflags |= buf[5] ? SR_MQFLAG_SPL_FREQ_WEIGHT_C : SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
463 | devc->stored_samples = (buf[7] << 8) | buf[8]; | |
464 | if (devc->stored_samples == 0) { | |
465 | /* Notify frontend of empty log by sending start/end packets. */ | |
466 | packet.type = SR_DF_END; | |
467 | sr_session_send(cb_data, &packet); | |
468 | return SR_OK; | |
469 | } | |
470 | ||
471 | if (devc->limit_samples && devc->limit_samples < devc->stored_samples) | |
472 | devc->stored_samples = devc->limit_samples; | |
473 | ||
474 | si = kecheng_kc_330b_sample_intervals[buf[1]]; | |
475 | rational[0] = g_variant_new_uint64(si[0]); | |
476 | rational[1] = g_variant_new_uint64(si[1]); | |
477 | gvar = g_variant_new_tuple(rational, 2); | |
478 | src = sr_config_new(SR_CONF_SAMPLE_INTERVAL, gvar); | |
479 | packet.type = SR_DF_META; | |
480 | packet.payload = &meta; | |
481 | meta.config = g_slist_append(NULL, src); | |
482 | sr_session_send(devc->cb_data, &packet); | |
483 | g_free(src); | |
f336618c BV |
484 | } |
485 | ||
df035528 BV |
486 | if (!(devc->xfer = libusb_alloc_transfer(0))) |
487 | return SR_ERR; | |
488 | ||
bc7be4a9 BV |
489 | pfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); |
490 | for (i = 0; pfd[i]; i++) { | |
df035528 BV |
491 | /* Handle USB events every 10ms. */ |
492 | sr_source_add(pfd[i]->fd, pfd[i]->events, 10, | |
bc7be4a9 BV |
493 | kecheng_kc_330b_handle_events, (void *)sdi); |
494 | /* We'll need to remove this fd later. */ | |
495 | devc->usbfd[i] = pfd[i]->fd; | |
496 | } | |
497 | devc->usbfd[i] = -1; | |
498 | ||
85ed4ab3 BV |
499 | if (devc->data_source == DATA_SOURCE_LIVE) { |
500 | buf[0] = CMD_GET_LIVE_SPL; | |
501 | buf_len = 1; | |
502 | devc->state = LIVE_SPL_WAIT; | |
503 | devc->last_live_request = g_get_monotonic_time() / 1000; | |
504 | req_len = 3; | |
505 | } else { | |
506 | buf[0] = CMD_GET_LOG_DATA; | |
507 | buf[1] = 0; | |
508 | buf[2] = 0; | |
509 | buf_len = 4; | |
510 | devc->state = LOG_DATA_WAIT; | |
511 | if (devc->stored_samples < 63) | |
512 | buf[3] = devc->stored_samples; | |
513 | else | |
514 | buf[3] = 63; | |
515 | /* Command ack byte + 2 bytes per sample. */ | |
516 | req_len = 1 + buf[3] * 2; | |
517 | } | |
518 | ||
519 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, buf_len, &len, 5); | |
bc7be4a9 BV |
520 | if (ret != 0 || len != 1) { |
521 | sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret)); | |
df035528 BV |
522 | libusb_free_transfer(devc->xfer); |
523 | return SR_ERR; | |
524 | } | |
df035528 BV |
525 | |
526 | libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf, | |
85ed4ab3 | 527 | req_len, kecheng_kc_330b_receive_transfer, (void *)sdi, 15); |
df035528 BV |
528 | if (libusb_submit_transfer(devc->xfer) != 0) { |
529 | libusb_free_transfer(devc->xfer); | |
bc7be4a9 BV |
530 | return SR_ERR; |
531 | } | |
ed759a08 BV |
532 | |
533 | return SR_OK; | |
534 | } | |
535 | ||
536 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
537 | { | |
85ed4ab3 BV |
538 | struct dev_context *devc; |
539 | ||
ed759a08 BV |
540 | (void)cb_data; |
541 | ||
542 | if (sdi->status != SR_ST_ACTIVE) | |
543 | return SR_ERR_DEV_CLOSED; | |
544 | ||
df035528 BV |
545 | /* Signal USB transfer handler to clean up and stop. */ |
546 | sdi->status = SR_ST_STOPPING; | |
ed759a08 | 547 | |
85ed4ab3 BV |
548 | devc = sdi->priv; |
549 | if (devc->data_source == DATA_SOURCE_MEMORY && devc->config_dirty) { | |
550 | /* The protocol doesn't have a command to clear stored data; | |
551 | * it clears it whenever new configuration is set. That means | |
552 | * we can't just configure the device any time we want when | |
553 | * it's in DATA_SOURCE_MEMORY mode. The only safe time to do | |
554 | * it is now, when we're sure we've pulled in all the stored | |
555 | * data. */ | |
556 | kecheng_kc_330b_configure(sdi); | |
557 | } | |
558 | ||
ed759a08 BV |
559 | return SR_OK; |
560 | } | |
561 | ||
562 | SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info = { | |
563 | .name = "kecheng-kc-330b", | |
564 | .longname = "Kecheng KC-330B", | |
565 | .api_version = 1, | |
566 | .init = init, | |
567 | .cleanup = cleanup, | |
568 | .scan = scan, | |
569 | .dev_list = dev_list, | |
570 | .dev_clear = dev_clear, | |
571 | .config_get = config_get, | |
572 | .config_set = config_set, | |
573 | .config_list = config_list, | |
574 | .dev_open = dev_open, | |
575 | .dev_close = dev_close, | |
576 | .dev_acquisition_start = dev_acquisition_start, | |
577 | .dev_acquisition_stop = dev_acquisition_stop, | |
578 | .priv = NULL, | |
579 | }; |