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3094e9d8 GS |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
ebc51109 | 4 | * Copyright (C) 2019-2020 Gerhard Sittig <gerhard.sittig@gmx.net> |
3094e9d8 GS |
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 <config.h> | |
21 | #include "protocol.h" | |
22 | ||
ebc51109 GS |
23 | static const uint32_t scanopts[] = { |
24 | SR_CONF_CONN, | |
25 | SR_CONF_SERIALCOMM, | |
26 | }; | |
3094e9d8 | 27 | |
ebc51109 GS |
28 | static const uint32_t drvopts[] = { |
29 | SR_CONF_MULTIMETER, | |
30 | SR_CONF_THERMOMETER, /* Supports two temperature probes and diffs. */ | |
31 | }; | |
3094e9d8 | 32 | |
ebc51109 GS |
33 | static const uint32_t devopts[] = { |
34 | SR_CONF_CONN | SR_CONF_GET, | |
35 | SR_CONF_CONTINUOUS, | |
36 | SR_CONF_LIMIT_FRAMES | SR_CONF_GET | SR_CONF_SET, | |
37 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
38 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
39 | SR_CONF_DATA_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
cbfaf5e0 GS |
40 | SR_CONF_DATALOG | SR_CONF_GET | SR_CONF_SET, |
41 | /* TODO SR_CONF_DATALOG is bool only, how to setup interval/duration? */ | |
ebc51109 GS |
42 | SR_CONF_MEASURED_QUANTITY | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, |
43 | SR_CONF_RANGE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
44 | }; | |
3094e9d8 | 45 | |
ebc51109 GS |
46 | static const char *channel_names[] = { |
47 | [UT181A_CH_MAIN] = "P1", | |
48 | [UT181A_CH_AUX1] = "P2", | |
49 | [UT181A_CH_AUX2] = "P3", | |
50 | [UT181A_CH_AUX3] = "P4", | |
51 | [UT181A_CH_BAR] = "bar", | |
52 | #if UT181A_WITH_TIMESTAMP | |
53 | [UT181A_CH_TIME] = "TS", | |
54 | #endif | |
55 | }; | |
56 | ||
57 | /* | |
58 | * (Re-)retrieve the list of recordings and their names. These can change | |
59 | * without the driver's being aware, the set is under user control. | |
60 | * | |
61 | * TODO Need to re-allocate the list of recording names when a larger | |
62 | * recordings count is seen than previously allocated? This implementation | |
63 | * assumes a known maximum number of recordings, the manual is vague on | |
64 | * these limits. | |
65 | */ | |
66 | static int ut181a_update_recordings(const struct sr_dev_inst *sdi) | |
67 | { | |
68 | struct dev_context *devc; | |
69 | struct sr_serial_dev_inst *serial; | |
70 | size_t rec_count, rec_idx; | |
71 | int ret; | |
3094e9d8 | 72 | |
ebc51109 GS |
73 | if (!sdi) |
74 | return SR_ERR_ARG; | |
75 | devc = sdi->priv; | |
76 | serial = sdi->conn; | |
77 | ||
78 | ret = ut181a_send_cmd_get_recs_count(serial); | |
79 | if (ret < 0) | |
80 | return ret; | |
81 | ret = ut181a_configure_waitfor(devc, FALSE, 0, 0, | |
82 | FALSE, TRUE, FALSE, FALSE); | |
83 | if (ret < 0) | |
84 | return ret; | |
85 | ret = ut181a_waitfor_response(sdi, 100); | |
86 | if (ret < 0) | |
87 | return ret; | |
88 | ||
89 | rec_count = devc->wait_state.data_value; | |
90 | if (rec_count > ARRAY_SIZE(devc->record_names)) | |
91 | rec_count = ARRAY_SIZE(devc->record_names); | |
92 | for (rec_idx = 0; rec_idx < rec_count; rec_idx++) { | |
93 | devc->info.rec_info.rec_idx = rec_idx; | |
94 | ret = ut181a_send_cmd_get_rec_info(serial, rec_idx); | |
95 | if (ret < 0) | |
96 | return ret; | |
97 | ret = ut181a_configure_waitfor(devc, | |
98 | FALSE, CMD_CODE_GET_REC_INFO, 0, | |
99 | FALSE, FALSE, FALSE, FALSE); | |
100 | if (ret < 0) | |
101 | return ret; | |
102 | ret = ut181a_waitfor_response(sdi, 100); | |
103 | if (ret < 0) | |
104 | return ret; | |
105 | } | |
106 | devc->record_count = rec_count; | |
107 | devc->data_source_count = DATA_SOURCE_REC_FIRST + devc->record_count; | |
3094e9d8 | 108 | |
ebc51109 | 109 | return SR_OK; |
3094e9d8 GS |
110 | } |
111 | ||
ebc51109 GS |
112 | /* |
113 | * Retrieve the device's current state. Run monitor mode for some time | |
114 | * until the 'mode' (meter's current function) became available. There | |
115 | * is no other way of querying the meter's current state. | |
116 | */ | |
117 | static int ut181a_query_initial_state(struct sr_dev_inst *sdi, int timeout_ms) | |
3094e9d8 | 118 | { |
ebc51109 GS |
119 | struct dev_context *devc; |
120 | struct sr_serial_dev_inst *serial; | |
121 | gint64 deadline; | |
122 | int ret; | |
3094e9d8 | 123 | |
ebc51109 GS |
124 | if (!sdi) |
125 | return SR_ERR_ARG; | |
126 | devc = sdi->priv; | |
127 | serial = sdi->conn; | |
128 | ||
129 | devc->info.meas_head.mode = 0; | |
130 | ret = ut181a_send_cmd_monitor(serial, TRUE); | |
131 | if (ret < 0) | |
132 | return ret; | |
133 | ret = ut181a_configure_waitfor(devc, FALSE, 0, 0, | |
134 | TRUE, FALSE, FALSE, FALSE); | |
135 | if (ret < 0) | |
136 | return ret; | |
137 | deadline = g_get_monotonic_time(); | |
138 | deadline += timeout_ms * 1000; | |
139 | while (1) { | |
140 | ret = ut181a_waitfor_response(sdi, 100); | |
141 | if (ret < 0) | |
142 | return ret; | |
143 | if (devc->info.meas_head.mode) | |
144 | break; | |
145 | if (g_get_monotonic_time() >= deadline) | |
146 | return SR_ERR_DATA; | |
147 | } | |
148 | (void)ut181a_send_cmd_monitor(serial, FALSE); | |
149 | ret = ut181a_configure_waitfor(devc, TRUE, 0, 0, | |
150 | FALSE, FALSE, FALSE, FALSE); | |
151 | if (ret < 0) | |
152 | return ret; | |
153 | (void)ut181a_waitfor_response(sdi, 100); | |
3094e9d8 GS |
154 | |
155 | return SR_OK; | |
156 | } | |
157 | ||
ebc51109 | 158 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
3094e9d8 | 159 | { |
ebc51109 GS |
160 | const char *conn, *serialcomm; |
161 | struct sr_config *src; | |
162 | GSList *l, *devices; | |
163 | struct sr_serial_dev_inst *serial; | |
164 | int ret; | |
165 | char conn_id[64]; | |
166 | struct sr_dev_inst *sdi; | |
167 | struct dev_context *devc; | |
168 | size_t idx, ds_idx; | |
169 | ||
170 | /* | |
171 | * Implementor's note: | |
172 | * Do _not_ add a default conn value here. Always expect users to | |
173 | * specify the connection. Never match in the absence of a user spec. | |
174 | * | |
175 | * Motivation: There is no way to identify the DMM itself. Neither | |
176 | * are the cable nor its chip unique to the device. They are not even | |
177 | * specific to the series or the vendor. The DMM ships with a generic | |
178 | * CP2110 USB-to-UART bridge. Attempts to auto probe will disturb | |
179 | * other types of devices which may be attached to the probed conn. | |
180 | * | |
181 | * On the other hand it's perfectly fine to communicate to the | |
182 | * device and assume that the device model will accept the requests, | |
183 | * once the user specified the connection (and the driver), and thus | |
184 | * instructed this driver to start such activity. | |
185 | */ | |
186 | conn = NULL; | |
187 | serialcomm = "9600/8n1"; | |
188 | for (l = options; l; l = l->next) { | |
189 | src = l->data; | |
190 | switch (src->key) { | |
191 | case SR_CONF_CONN: | |
192 | conn = g_variant_get_string(src->data, NULL); | |
193 | break; | |
194 | case SR_CONF_SERIALCOMM: | |
195 | serialcomm = g_variant_get_string(src->data, NULL); | |
196 | break; | |
197 | } | |
198 | } | |
199 | if (!conn) | |
200 | return NULL; | |
3094e9d8 | 201 | |
ebc51109 GS |
202 | devices = NULL; |
203 | serial = sr_serial_dev_inst_new(conn, serialcomm); | |
204 | ret = serial_open(serial, SERIAL_RDWR); | |
205 | snprintf(conn_id, sizeof(conn_id), "%s", serial->port); | |
206 | serial_flush(serial); | |
207 | /* | |
208 | * We cannot identify the device at this point in time. | |
209 | * Successful open shall suffice for now. More activity | |
210 | * will communicate to the device later, after the driver | |
211 | * instance got created. See below for details. | |
212 | */ | |
213 | if (ret != SR_OK) { | |
214 | serial_close(serial); | |
215 | sr_serial_dev_inst_free(serial); | |
216 | return devices; | |
217 | } | |
3094e9d8 | 218 | |
ebc51109 GS |
219 | sdi = g_malloc0(sizeof(*sdi)); |
220 | sdi->status = SR_ST_INACTIVE; | |
221 | sdi->vendor = g_strdup("UNI-T"); | |
222 | sdi->model = g_strdup("UT181A"); | |
223 | sdi->inst_type = SR_INST_SERIAL; | |
224 | sdi->conn = serial; | |
225 | sdi->connection_id = g_strdup(conn_id); | |
226 | devc = g_malloc0(sizeof(*devc)); | |
227 | sdi->priv = devc; | |
228 | sr_sw_limits_init(&devc->limits); | |
229 | for (idx = 0; idx < ARRAY_SIZE(channel_names); idx++) { | |
230 | sr_channel_new(sdi, idx, SR_CHANNEL_ANALOG, TRUE, | |
231 | channel_names[idx]); | |
232 | } | |
233 | ||
234 | /* | |
235 | * Run monitor mode for a while to determine the current state | |
236 | * of the device (which cannot get queried by other means). This | |
237 | * also deals with devices which happen to already be in monitor | |
238 | * mode when we connect to them. As a byproduct this query drains | |
239 | * potentially pending RX data, before getting recording details. | |
240 | */ | |
241 | devc->disable_feed = 1; | |
242 | ret = ut181a_query_initial_state(sdi, 2000); | |
243 | if (ret < 0) { | |
244 | serial_close(serial); | |
245 | sr_serial_dev_inst_free(serial); | |
246 | return devices; | |
247 | } | |
248 | ||
249 | /* | |
250 | * Number of recordings and their names are dynamic and under | |
251 | * the user's control. Prepare for a maximum number of string | |
252 | * labels, and fetch (and re-fetch) their names and current | |
253 | * count on demand. | |
254 | */ | |
255 | devc->data_source_names[DATA_SOURCE_LIVE] = "Live"; | |
256 | devc->data_source_names[DATA_SOURCE_SAVE] = "Save"; | |
257 | for (idx = 0; idx < MAX_REC_COUNT; idx++) { | |
258 | ds_idx = DATA_SOURCE_REC_FIRST + idx; | |
259 | devc->data_source_names[ds_idx] = &devc->record_names[idx][0]; | |
260 | } | |
261 | devc->data_source_count = DATA_SOURCE_REC_FIRST; | |
262 | ret = ut181a_update_recordings(sdi); | |
263 | devc->data_source_count = DATA_SOURCE_REC_FIRST + devc->record_count; | |
264 | if (ret < 0) { | |
265 | serial_close(serial); | |
266 | sr_serial_dev_inst_free(serial); | |
267 | return devices; | |
268 | } | |
269 | ||
270 | devc->disable_feed = 0; | |
271 | serial_close(serial); | |
272 | ||
273 | devices = g_slist_append(devices, sdi); | |
274 | ||
275 | return std_scan_complete(di, devices); | |
3094e9d8 GS |
276 | } |
277 | ||
278 | static int config_get(uint32_t key, GVariant **data, | |
279 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
280 | { | |
ebc51109 GS |
281 | struct dev_context *devc; |
282 | const struct mqopt_item *mqitem; | |
283 | GVariant *arr[2]; | |
284 | const char *range; | |
3094e9d8 | 285 | |
3094e9d8 GS |
286 | (void)cg; |
287 | ||
ebc51109 | 288 | devc = sdi->priv; |
3094e9d8 | 289 | switch (key) { |
ebc51109 GS |
290 | case SR_CONF_CONN: |
291 | *data = g_variant_new_string(sdi->connection_id); | |
292 | break; | |
293 | case SR_CONF_LIMIT_FRAMES: | |
294 | case SR_CONF_LIMIT_SAMPLES: | |
295 | case SR_CONF_LIMIT_MSEC: | |
296 | if (!devc) | |
297 | return SR_ERR_ARG; | |
298 | return sr_sw_limits_config_get(&devc->limits, key, data); | |
299 | case SR_CONF_DATA_SOURCE: | |
300 | if (!devc) | |
301 | return SR_ERR_ARG; | |
302 | *data = g_variant_new_string(devc->data_source_names[devc->data_source]); | |
303 | break; | |
304 | case SR_CONF_DATALOG: | |
305 | if (!devc) | |
306 | return SR_ERR_ARG; | |
307 | *data = g_variant_new_boolean(devc->is_recording ? TRUE : FALSE); | |
308 | break; | |
309 | case SR_CONF_MEASURED_QUANTITY: | |
310 | if (!devc) | |
311 | return SR_ERR_ARG; | |
312 | mqitem = ut181a_get_mqitem_from_mode(devc->info.meas_head.mode); | |
313 | if (!mqitem) | |
314 | return SR_ERR_NA; | |
315 | arr[0] = g_variant_new_uint32(mqitem->mq); | |
316 | arr[1] = g_variant_new_uint64(mqitem->mqflags); | |
317 | *data = g_variant_new_tuple(arr, ARRAY_SIZE(arr)); | |
318 | break; | |
319 | case SR_CONF_RANGE: | |
320 | if (!devc) | |
321 | return SR_ERR_ARG; | |
322 | range = ut181a_get_range_from_packet_bytes(devc); | |
323 | if (!range || !*range) | |
324 | return SR_ERR_NA; | |
325 | *data = g_variant_new_string(range); | |
326 | break; | |
3094e9d8 GS |
327 | default: |
328 | return SR_ERR_NA; | |
329 | } | |
330 | ||
ebc51109 | 331 | return SR_OK; |
3094e9d8 GS |
332 | } |
333 | ||
334 | static int config_set(uint32_t key, GVariant *data, | |
335 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
336 | { | |
ebc51109 GS |
337 | struct dev_context *devc; |
338 | ssize_t idx; | |
cbfaf5e0 | 339 | gboolean on; |
ebc51109 GS |
340 | GVariant *tuple_child; |
341 | enum sr_mq mq; | |
342 | enum sr_mqflag mqflags; | |
343 | uint16_t mode; | |
3094e9d8 | 344 | int ret; |
ebc51109 GS |
345 | size_t rec_no; |
346 | const char *range; | |
3094e9d8 | 347 | |
3094e9d8 GS |
348 | (void)cg; |
349 | ||
ebc51109 | 350 | devc = sdi->priv; |
3094e9d8 | 351 | switch (key) { |
ebc51109 GS |
352 | case SR_CONF_LIMIT_FRAMES: |
353 | case SR_CONF_LIMIT_SAMPLES: | |
354 | case SR_CONF_LIMIT_MSEC: | |
355 | if (!devc) | |
356 | return SR_ERR_ARG; | |
357 | return sr_sw_limits_config_set(&devc->limits, key, data); | |
358 | case SR_CONF_DATA_SOURCE: | |
359 | if (!devc) | |
360 | return SR_ERR_ARG; | |
361 | /* Prefer data source names for the lookup. */ | |
362 | idx = std_str_idx(data, devc->data_source_names, devc->data_source_count); | |
363 | if (idx >= 0) { | |
364 | devc->data_source = idx; | |
365 | break; | |
366 | } | |
367 | /* | |
368 | * Support record number (1-based) as a fallback. The DMM | |
369 | * "supports" ambiguous recording names (keeps offering a | |
370 | * previously stored name for each new recording, neither | |
371 | * automatically increments nor suggests timestamps). | |
372 | */ | |
373 | if (sr_atoi(g_variant_get_string(data, NULL), &ret) != SR_OK) | |
374 | return SR_ERR_ARG; | |
375 | if (ret <= 0) | |
376 | return SR_ERR_ARG; | |
377 | rec_no = ret; | |
378 | if (rec_no > devc->record_count) | |
379 | return SR_ERR_ARG; | |
380 | devc->data_source = DATA_SOURCE_REC_FIRST + rec_no - 1; | |
381 | break; | |
cbfaf5e0 GS |
382 | case SR_CONF_DATALOG: |
383 | if (!devc) | |
384 | return SR_ERR_ARG; | |
385 | on = g_variant_get_boolean(data); | |
386 | sr_err("DIAG: record start/stop %d, currently ENOIMPL", on); | |
387 | return SR_ERR_NA; | |
388 | /* | |
389 | * TODO Send command 0x0a (start) or 0x0b (stop). Though | |
390 | * start needs a name (ymd timestamp?) and interval and | |
391 | * duration (arbitrary choice? 1s for 1d?). Or shall this | |
392 | * SET request control "save" items instead? Take one | |
393 | * sample each for every 'datalog=on' request? Combine | |
394 | * limit_samples and limit_msec with datalog to configure | |
395 | * a recording's parameters? | |
396 | */ | |
397 | break; | |
ebc51109 GS |
398 | case SR_CONF_MEASURED_QUANTITY: |
399 | if (!devc) | |
400 | return SR_ERR_ARG; | |
401 | tuple_child = g_variant_get_child_value(data, 0); | |
402 | mq = g_variant_get_uint32(tuple_child); | |
403 | g_variant_unref(tuple_child); | |
404 | tuple_child = g_variant_get_child_value(data, 1); | |
405 | mqflags = g_variant_get_uint64(tuple_child); | |
406 | g_variant_unref(tuple_child); | |
407 | mode = ut181a_get_mode_from_mq_flags(mq, mqflags); | |
408 | if (!mode) | |
409 | return SR_ERR_NA; | |
410 | ret = ut181a_send_cmd_setmode(sdi->conn, mode); | |
411 | if (ret < 0) | |
412 | return ret; | |
413 | ret = ut181a_waitfor_response(sdi->conn, 100); | |
414 | if (ret < 0) | |
415 | return ret; | |
416 | if (devc->info.rsp_head.rsp_type != RSP_TYPE_REPLY_CODE) | |
417 | return SR_ERR_DATA; | |
418 | if (!devc->info.reply_code.ok) | |
419 | return SR_ERR_DATA; | |
420 | break; | |
421 | case SR_CONF_RANGE: | |
422 | range = g_variant_get_string(data, NULL); | |
423 | return ut181a_set_range_from_text(sdi, range); | |
3094e9d8 | 424 | default: |
ebc51109 | 425 | return SR_ERR_NA; |
3094e9d8 GS |
426 | } |
427 | ||
ebc51109 | 428 | return SR_OK; |
3094e9d8 GS |
429 | } |
430 | ||
431 | static int config_list(uint32_t key, GVariant **data, | |
432 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
433 | { | |
ebc51109 | 434 | struct dev_context *devc; |
3094e9d8 GS |
435 | int ret; |
436 | ||
ebc51109 | 437 | devc = sdi ? sdi->priv : NULL; |
3094e9d8 | 438 | switch (key) { |
ebc51109 GS |
439 | case SR_CONF_SCAN_OPTIONS: |
440 | case SR_CONF_DEVICE_OPTIONS: | |
441 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); | |
442 | case SR_CONF_DATA_SOURCE: | |
443 | if (!devc) | |
444 | return SR_ERR_NA; | |
445 | ret = ut181a_update_recordings(sdi); | |
446 | if (ret < 0) | |
447 | return ret; | |
448 | *data = g_variant_new_strv(devc->data_source_names, devc->data_source_count); | |
449 | break; | |
450 | case SR_CONF_MEASURED_QUANTITY: | |
451 | *data = ut181a_get_mq_flags_list(); | |
452 | break; | |
453 | case SR_CONF_RANGE: | |
454 | *data = ut181a_get_ranges_list(); | |
455 | break; | |
3094e9d8 GS |
456 | default: |
457 | return SR_ERR_NA; | |
458 | } | |
459 | ||
ebc51109 | 460 | return SR_OK; |
3094e9d8 GS |
461 | } |
462 | ||
463 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
464 | { | |
ebc51109 GS |
465 | struct dev_context *devc; |
466 | struct sr_serial_dev_inst *serial; | |
467 | int ret; | |
468 | size_t rec_idx; | |
469 | ||
470 | devc = sdi->priv; | |
471 | serial = sdi->conn; | |
472 | serial_flush(serial); | |
473 | ||
474 | /* | |
475 | * Send an acquisition start command which depends on the | |
476 | * currently selected data source. Enter monitor mode for | |
477 | * Live readings, get saved or recorded data otherwise. The | |
478 | * latter require queries for sample counts, then run chunked | |
479 | * download sequences (single item for Save, set of samples | |
480 | * for Recordings). | |
481 | */ | |
482 | if (devc->data_source == DATA_SOURCE_LIVE) { | |
483 | ret = ut181a_send_cmd_monitor(serial, TRUE); | |
484 | } else if (devc->data_source == DATA_SOURCE_SAVE) { | |
485 | /* | |
486 | * There is only one sequence of saved measurements in | |
487 | * the device, but its length is yet unknown. Determine | |
488 | * the number of saved items, and initiate the reception | |
489 | * of the first value. Completion of data reception will | |
490 | * drive subsequent progress. | |
491 | */ | |
492 | ret = ut181a_send_cmd_get_save_count(serial); | |
493 | if (ret < 0) | |
494 | return ret; | |
495 | ret = ut181a_configure_waitfor(devc, FALSE, 0, 0, | |
496 | FALSE, FALSE, TRUE, FALSE); | |
497 | if (ret < 0) | |
498 | return ret; | |
499 | ret = ut181a_waitfor_response(sdi, 200); | |
500 | if (ret < 0) | |
501 | return ret; | |
502 | devc->info.save_info.save_count = devc->wait_state.data_value; | |
503 | devc->info.save_info.save_idx = 0; | |
504 | ret = ut181a_send_cmd_get_saved_value(serial, 0); | |
505 | } else if (devc->data_source >= DATA_SOURCE_REC_FIRST) { | |
506 | /* | |
507 | * When we get here, the data source got selected, which | |
508 | * includes an update of the device's list of recordings. | |
509 | * So the index should be good, just the number of samples | |
510 | * in that recording is yet unknown. Get the sample count | |
511 | * and initiate the reception of the first chunk, completed | |
512 | * reception of a chunk advances through the sequence. | |
513 | */ | |
514 | rec_idx = devc->data_source - DATA_SOURCE_REC_FIRST; | |
515 | if (rec_idx >= devc->record_count) | |
516 | return SR_ERR_DATA; | |
517 | devc->info.rec_info.rec_count = devc->record_count; | |
518 | devc->info.rec_info.rec_idx = rec_idx; | |
519 | devc->info.rec_info.auto_next = 0; | |
520 | devc->info.rec_info.auto_feed = 1; | |
521 | ret = ut181a_send_cmd_get_rec_info(serial, rec_idx); | |
522 | if (ret < 0) | |
523 | return ret; | |
524 | ret = ut181a_configure_waitfor(devc, | |
525 | FALSE, CMD_CODE_GET_REC_INFO, 0, | |
526 | FALSE, FALSE, FALSE, FALSE); | |
527 | if (ret < 0) | |
528 | return ret; | |
529 | ret = ut181a_waitfor_response(sdi, 200); | |
530 | if (ret < 0) | |
531 | return ret; | |
532 | devc->info.rec_data.samples_total = devc->wait_state.data_value; | |
533 | devc->info.rec_data.samples_curr = 0; | |
534 | ret = ut181a_send_cmd_get_rec_samples(serial, rec_idx, 0); | |
535 | } | |
536 | if (ret < 0) | |
537 | return ret; | |
538 | ||
539 | sr_sw_limits_acquisition_start(&devc->limits); | |
540 | devc->recv_count = 0; | |
541 | std_session_send_df_header(sdi); | |
3094e9d8 | 542 | |
ebc51109 GS |
543 | serial_source_add(sdi->session, serial, G_IO_IN, 10, |
544 | ut181a_handle_events, (void *)sdi); | |
3094e9d8 GS |
545 | |
546 | return SR_OK; | |
547 | } | |
548 | ||
549 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
550 | { | |
3094e9d8 | 551 | |
ebc51109 GS |
552 | sdi->status = SR_ST_STOPPING; |
553 | /* Initiate stop here. Activity happens in ut181a_handle_events(). */ | |
3094e9d8 GS |
554 | |
555 | return SR_OK; | |
556 | } | |
557 | ||
558 | static struct sr_dev_driver uni_t_ut181a_driver_info = { | |
559 | .name = "uni-t-ut181a", | |
560 | .longname = "UNI-T UT181A", | |
561 | .api_version = 1, | |
562 | .init = std_init, | |
563 | .cleanup = std_cleanup, | |
564 | .scan = scan, | |
565 | .dev_list = std_dev_list, | |
566 | .dev_clear = std_dev_clear, | |
567 | .config_get = config_get, | |
568 | .config_set = config_set, | |
569 | .config_list = config_list, | |
ebc51109 GS |
570 | .dev_open = std_serial_dev_open, |
571 | .dev_close = std_serial_dev_close, | |
3094e9d8 GS |
572 | .dev_acquisition_start = dev_acquisition_start, |
573 | .dev_acquisition_stop = dev_acquisition_stop, | |
574 | .context = NULL, | |
575 | }; | |
576 | SR_REGISTER_DEV_DRIVER(uni_t_ut181a_driver_info); |