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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2017 Sven Schnelle <svens@stackframe.org> | |
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 <math.h> | |
22 | #include <stdlib.h> | |
23 | #include "scpi.h" | |
24 | #include "protocol.h" | |
25 | ||
26 | SR_PRIV void lecroy_queue_logic_data(struct dev_context *devc, | |
27 | size_t group, GByteArray *pod_data); | |
28 | SR_PRIV void lecroy_send_logic_packet(struct sr_dev_inst *sdi, | |
29 | struct dev_context *devc); | |
30 | SR_PRIV void lecroy_cleanup_logic_data(struct dev_context *devc); | |
31 | ||
32 | struct lecroy_wavedesc_2_x { | |
33 | uint16_t comm_type; | |
34 | uint16_t comm_order; /* 1 - little endian */ | |
35 | uint32_t wave_descriptor_length; | |
36 | uint32_t user_text_len; | |
37 | uint32_t res_desc1; | |
38 | uint32_t trigtime_array_length; | |
39 | uint32_t ris_time1_array_length; | |
40 | uint32_t res_array1; | |
41 | uint32_t wave_array1_length; | |
42 | uint32_t wave_array2_length; | |
43 | uint32_t wave_array3_length; | |
44 | uint32_t wave_array4_length; | |
45 | char instrument_name[16]; | |
46 | uint32_t instrument_number; | |
47 | char trace_label[16]; | |
48 | uint32_t reserved; | |
49 | uint32_t wave_array_count; | |
50 | uint32_t points_per_screen; | |
51 | uint32_t first_valid_point; | |
52 | uint32_t last_valid_point; | |
53 | uint32_t first_point; | |
54 | uint32_t sparsing_factor; | |
55 | uint32_t segment_index; | |
56 | uint32_t subarray_count; | |
57 | uint32_t sweeps_per_acq; | |
58 | uint16_t points_per_pair; | |
59 | uint16_t pair_offset; | |
60 | float vertical_gain; | |
61 | float vertical_offset; | |
62 | float max_value; | |
63 | float min_value; | |
64 | uint16_t nominal_bits; | |
65 | uint16_t nom_subarray_count; | |
66 | float horiz_interval; | |
67 | double horiz_offset; | |
68 | double pixel_offset; | |
69 | char vertunit[48]; | |
70 | char horunit[48]; | |
71 | uint32_t reserved1; | |
72 | double trigger_time; | |
73 | } __attribute__((packed)); | |
74 | ||
75 | struct lecroy_wavedesc { | |
76 | char descriptor_name[16]; | |
77 | char template_name[16]; | |
78 | union { | |
79 | struct lecroy_wavedesc_2_x version_2_x; | |
80 | }; | |
81 | } __attribute__((packed)); | |
82 | ||
83 | static const uint32_t lecroy_devopts[] = { | |
84 | SR_CONF_OSCILLOSCOPE, | |
85 | SR_CONF_LIMIT_FRAMES | SR_CONF_GET | SR_CONF_SET, | |
86 | SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
87 | SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
88 | SR_CONF_NUM_HDIV | SR_CONF_GET, | |
89 | SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
90 | SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET, | |
91 | SR_CONF_SAMPLERATE | SR_CONF_GET, | |
92 | }; | |
93 | ||
94 | static const uint32_t lecroy_analog_devopts[] = { | |
95 | SR_CONF_NUM_VDIV | SR_CONF_GET, | |
96 | SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
97 | SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
98 | }; | |
99 | ||
100 | static const char *lecroy_coupling_options[] = { | |
101 | "A1M", // AC with 1 MOhm termination | |
102 | "D50", // DC with 50 Ohm termination | |
103 | "D1M", // DC with 1 MOhm termination | |
104 | "GND", | |
105 | "OVL", | |
106 | NULL, | |
107 | }; | |
108 | ||
109 | static const char *scope_trigger_slopes[] = { | |
110 | "POS", | |
111 | "NEG", | |
112 | NULL, | |
113 | }; | |
114 | ||
115 | static const char *lecroy_xstream_trigger_sources[] = { | |
116 | "C1", | |
117 | "C2", | |
118 | "C3", | |
119 | "C4", | |
120 | "LINE", | |
121 | "EXT", | |
122 | NULL, | |
123 | }; | |
124 | ||
125 | static const struct sr_rational lecroy_timebases[] = { | |
126 | /* picoseconds */ | |
127 | { 20, 1000000000000 }, | |
128 | { 50, 1000000000000 }, | |
129 | { 100, 1000000000000 }, | |
130 | { 200, 1000000000000 }, | |
131 | { 500, 1000000000000 }, | |
132 | /* nanoseconds */ | |
133 | { 1, 1000000000 }, | |
134 | { 2, 1000000000 }, | |
135 | { 5, 1000000000 }, | |
136 | { 10, 1000000000 }, | |
137 | { 20, 1000000000 }, | |
138 | { 50, 1000000000 }, | |
139 | { 100, 1000000000 }, | |
140 | { 200, 1000000000 }, | |
141 | { 500, 1000000000 }, | |
142 | /* microseconds */ | |
143 | { 1, 1000000 }, | |
144 | { 2, 1000000 }, | |
145 | { 5, 1000000 }, | |
146 | { 10, 1000000 }, | |
147 | { 20, 1000000 }, | |
148 | { 50, 1000000 }, | |
149 | { 100, 1000000 }, | |
150 | { 200, 1000000 }, | |
151 | { 500, 1000000 }, | |
152 | /* milliseconds */ | |
153 | { 1, 1000 }, | |
154 | { 2, 1000 }, | |
155 | { 5, 1000 }, | |
156 | { 10, 1000 }, | |
157 | { 20, 1000 }, | |
158 | { 50, 1000 }, | |
159 | { 100, 1000 }, | |
160 | { 200, 1000 }, | |
161 | { 500, 1000 }, | |
162 | /* seconds */ | |
163 | { 1, 1 }, | |
164 | { 2, 1 }, | |
165 | { 5, 1 }, | |
166 | { 10, 1 }, | |
167 | { 20, 1 }, | |
168 | { 50, 1 }, | |
169 | { 100, 1 }, | |
170 | { 200, 1 }, | |
171 | { 500, 1 }, | |
172 | { 1000, 1 }, | |
173 | }; | |
174 | ||
175 | static const struct sr_rational lecroy_vdivs[] = { | |
176 | /* millivolts */ | |
177 | { 1, 1000 }, | |
178 | { 2, 1000 }, | |
179 | { 5, 1000 }, | |
180 | { 10, 1000 }, | |
181 | { 20, 1000 }, | |
182 | { 50, 1000 }, | |
183 | { 100, 1000 }, | |
184 | { 200, 1000 }, | |
185 | { 500, 1000 }, | |
186 | /* volts */ | |
187 | { 1, 1 }, | |
188 | { 2, 1 }, | |
189 | { 5, 1 }, | |
190 | { 10, 1 }, | |
191 | { 20, 1 }, | |
192 | { 50, 1 }, | |
193 | }; | |
194 | ||
195 | static const char *scope_analog_channel_names[] = { | |
196 | "CH1", | |
197 | "CH2", | |
198 | "CH3", | |
199 | "CH4", | |
200 | }; | |
201 | ||
202 | static const struct scope_config scope_models[] = { | |
203 | { | |
204 | .name = { "WP7000", "WP7100", "WP7200", "WP7300" }, | |
205 | ||
206 | .analog_channels = 4, | |
207 | .analog_names = &scope_analog_channel_names, | |
208 | ||
209 | .devopts = &lecroy_devopts, | |
210 | .num_devopts = ARRAY_SIZE(lecroy_devopts), | |
211 | ||
212 | .analog_devopts = &lecroy_analog_devopts, | |
213 | .num_analog_devopts = ARRAY_SIZE(lecroy_analog_devopts), | |
214 | ||
215 | .coupling_options = &lecroy_coupling_options, | |
216 | .trigger_sources = &lecroy_xstream_trigger_sources, | |
217 | .trigger_slopes = &scope_trigger_slopes, | |
218 | ||
219 | .timebases = lecroy_timebases, | |
220 | .num_timebases = ARRAY_SIZE(lecroy_timebases), | |
221 | ||
222 | .vdivs = lecroy_vdivs, | |
223 | .num_vdivs = ARRAY_SIZE(lecroy_vdivs), | |
224 | ||
225 | .num_xdivs = 10, | |
226 | .num_ydivs = 8, | |
227 | }, | |
228 | }; | |
229 | ||
230 | static void scope_state_dump(const struct scope_config *config, | |
231 | struct scope_state *state) | |
232 | { | |
233 | unsigned int i; | |
234 | char *tmp; | |
235 | ||
236 | for (i = 0; i < config->analog_channels; i++) { | |
237 | tmp = sr_voltage_string(config->vdivs[state->analog_channels[i].vdiv].p, | |
238 | config->vdivs[state->analog_channels[i].vdiv].q); | |
239 | sr_info("State of analog channel %d -> %s : %s (coupling) %s (vdiv) %2.2e (offset)", | |
240 | i + 1, state->analog_channels[i].state ? "On" : "Off", | |
241 | (*config->coupling_options)[state->analog_channels[i].coupling], | |
242 | tmp, state->analog_channels[i].vertical_offset); | |
243 | } | |
244 | ||
245 | tmp = sr_period_string_f(1.0/(((float)config->timebases[state->timebase].p) / | |
246 | ((float)config->timebases[state->timebase].q)), 0); | |
247 | sr_info("Current timebase: %s", tmp); | |
248 | g_free(tmp); | |
249 | ||
250 | tmp = sr_samplerate_string(state->sample_rate); | |
251 | sr_info("Current samplerate: %s", tmp); | |
252 | g_free(tmp); | |
253 | ||
254 | sr_info("Current trigger: %s (source), %s (slope) %.2f (offset)", | |
255 | (*config->trigger_sources)[state->trigger_source], | |
256 | (*config->trigger_slopes)[state->trigger_slope], | |
257 | state->horiz_triggerpos); | |
258 | } | |
259 | ||
260 | static int scope_state_get_array_option(const char *resp, | |
261 | const char *(*array)[], | |
262 | int *result) | |
263 | { | |
264 | unsigned int i; | |
265 | ||
266 | for (i = 0; (*array)[i]; i++) { | |
267 | if (!g_strcmp0(resp, (*array)[i])) { | |
268 | *result = i; | |
269 | return SR_OK; | |
270 | } | |
271 | } | |
272 | ||
273 | return SR_ERR; | |
274 | } | |
275 | ||
276 | /** | |
277 | * This function takes a value of the form "2.000E-03" and returns the index | |
278 | * of an array where a matching pair was found. | |
279 | * | |
280 | * @param value The string to be parsed. | |
281 | * @param array The array of s/f pairs. | |
282 | * @param array_len The number of pairs in the array. | |
283 | * @param result The index at which a matching pair was found. | |
284 | * | |
285 | * @return SR_ERR on any parsing error, SR_OK otherwise. | |
286 | */ | |
287 | static int array_float_get(gchar *value, const struct sr_rational *aval, | |
288 | int array_len, unsigned int *result) | |
289 | { | |
290 | struct sr_rational rval; | |
291 | ||
292 | if (sr_parse_rational(value, &rval) != SR_OK) | |
293 | return SR_ERR; | |
294 | ||
295 | for (int i = 0; i < array_len; i++) { | |
296 | if (sr_rational_eq(&rval, aval+i)) { | |
297 | *result = i; | |
298 | return SR_OK; | |
299 | } | |
300 | } | |
301 | ||
302 | return SR_ERR; | |
303 | } | |
304 | ||
305 | static int analog_channel_state_get(struct sr_scpi_dev_inst *scpi, | |
306 | const struct scope_config *config, | |
307 | struct scope_state *state) | |
308 | { | |
309 | unsigned int i, j; | |
310 | char command[MAX_COMMAND_SIZE]; | |
311 | char *tmp_str; | |
312 | ||
313 | for (i = 0; i < config->analog_channels; i++) { | |
314 | g_snprintf(command, sizeof(command), "C%d:TRACE?", i+1); | |
315 | ||
316 | if (sr_scpi_get_bool(scpi, command, | |
317 | &state->analog_channels[i].state) != SR_OK) | |
318 | return SR_ERR; | |
319 | ||
320 | g_snprintf(command, sizeof(command), "C%d:VDIV?", i+1); | |
321 | ||
322 | if (sr_scpi_get_string(scpi, command, &tmp_str) != SR_OK) | |
323 | return SR_ERR; | |
324 | ||
325 | if (array_float_get(tmp_str, lecroy_vdivs, ARRAY_SIZE(lecroy_vdivs), | |
326 | &j) != SR_OK) { | |
327 | g_free(tmp_str); | |
328 | sr_err("Could not determine array index for vertical div scale."); | |
329 | return SR_ERR; | |
330 | } | |
331 | ||
332 | g_free(tmp_str); | |
333 | state->analog_channels[i].vdiv = j; | |
334 | ||
335 | g_snprintf(command, sizeof(command), "C%d:OFFSET?", i+1); | |
336 | ||
337 | if (sr_scpi_get_float(scpi, command, &state->analog_channels[i].vertical_offset) != SR_OK) | |
338 | return SR_ERR; | |
339 | ||
340 | g_snprintf(command, sizeof(command), "C%d:COUPLING?", i+1); | |
341 | ||
342 | if (sr_scpi_get_string(scpi, command, &tmp_str) != SR_OK) | |
343 | return SR_ERR; | |
344 | ||
345 | ||
346 | if (scope_state_get_array_option(tmp_str, config->coupling_options, | |
347 | &state->analog_channels[i].coupling) != SR_OK) | |
348 | return SR_ERR; | |
349 | ||
350 | g_free(tmp_str); | |
351 | } | |
352 | ||
353 | return SR_OK; | |
354 | } | |
355 | ||
356 | SR_PRIV int lecroy_xstream_update_sample_rate(const struct sr_dev_inst *sdi) | |
357 | { | |
358 | struct dev_context *devc; | |
359 | struct scope_state *state; | |
360 | const struct scope_config *config; | |
361 | float memsize, timediv; | |
362 | ||
363 | devc = sdi->priv; | |
364 | state = devc->model_state; | |
365 | config = devc->model_config; | |
366 | ||
367 | if (sr_scpi_get_float(sdi->conn, "MEMORY_SIZE?", &memsize) != SR_OK) | |
368 | return SR_ERR; | |
369 | ||
370 | if (sr_scpi_get_float(sdi->conn, "TIME_DIV?", &timediv) != SR_OK) | |
371 | return SR_ERR; | |
372 | ||
373 | state->sample_rate = 1/((timediv * config->num_xdivs) / memsize); | |
374 | ||
375 | return SR_OK; | |
376 | } | |
377 | ||
378 | SR_PRIV int lecroy_xstream_state_get(struct sr_dev_inst *sdi) | |
379 | { | |
380 | struct dev_context *devc; | |
381 | struct scope_state *state | |
382 | ; const struct scope_config *config; | |
383 | unsigned int i; | |
384 | char *tmp_str, *tmp_str2, *tmpp, *p, *key; | |
385 | char command[MAX_COMMAND_SIZE]; | |
386 | char *trig_source = NULL; | |
387 | ||
388 | devc = sdi->priv; | |
389 | config = devc->model_config; | |
390 | state = devc->model_state; | |
391 | ||
392 | sr_info("Fetching scope state"); | |
393 | ||
394 | if (analog_channel_state_get(sdi->conn, config, state) != SR_OK) | |
395 | return SR_ERR; | |
396 | ||
397 | if (sr_scpi_get_string(sdi->conn, "TIME_DIV?", &tmp_str) != SR_OK) | |
398 | return SR_ERR; | |
399 | ||
400 | if (array_float_get(tmp_str, lecroy_timebases, ARRAY_SIZE(lecroy_timebases), | |
401 | &i) != SR_OK) { | |
402 | g_free(tmp_str); | |
403 | sr_err("Could not determine array index for timbase scale."); | |
404 | return SR_ERR; | |
405 | } | |
406 | g_free(tmp_str); | |
407 | state->timebase = i; | |
408 | ||
409 | if (sr_scpi_get_string(sdi->conn, "TRIG_SELECT?", &tmp_str) != SR_OK) | |
410 | return SR_ERR; | |
411 | ||
412 | tmp_str2 = tmp_str; | |
413 | i = 0; | |
414 | while((p = strtok_r(tmp_str2, ",", &tmpp))) { | |
415 | tmp_str2 = NULL; | |
416 | if (i == 0) { | |
417 | /* trigger type */ | |
418 | } else if (i & 1) { | |
419 | key = p; | |
420 | /* key */ | |
421 | } else if (!(i & 1)) { | |
422 | if (!strcmp(key, "SR")) | |
423 | trig_source = p; | |
424 | } | |
425 | i++; | |
426 | } | |
427 | ||
428 | if (!trig_source || scope_state_get_array_option(trig_source, config->trigger_sources, | |
429 | &state->trigger_source) != SR_OK) | |
430 | return SR_ERR; | |
431 | ||
432 | ||
433 | g_snprintf(command, sizeof(command), "%s:TRIG_SLOPE?", trig_source); | |
434 | if (sr_scpi_get_string(sdi->conn, command, &tmp_str) != SR_OK) | |
435 | return SR_ERR; | |
436 | ||
437 | if (scope_state_get_array_option(tmp_str, | |
438 | config->trigger_slopes, &state->trigger_slope) != SR_OK) | |
439 | return SR_ERR; | |
440 | ||
441 | if (sr_scpi_get_float(sdi->conn, "TRIG_DELAY?", &state->horiz_triggerpos) != SR_OK) | |
442 | return SR_ERR; | |
443 | ||
444 | if (lecroy_xstream_update_sample_rate(sdi) != SR_OK) | |
445 | return SR_ERR; | |
446 | ||
447 | sr_info("Fetching finished."); | |
448 | ||
449 | scope_state_dump(config, state); | |
450 | ||
451 | return SR_OK; | |
452 | } | |
453 | ||
454 | static struct scope_state *scope_state_new(const struct scope_config *config) | |
455 | { | |
456 | struct scope_state *state; | |
457 | ||
458 | state = g_malloc0(sizeof(struct scope_state)); | |
459 | state->analog_channels = g_malloc0_n(config->analog_channels, | |
460 | sizeof(struct analog_channel_state)); | |
461 | return state; | |
462 | } | |
463 | ||
464 | SR_PRIV void lecroy_xstream_state_free(struct scope_state *state) | |
465 | { | |
466 | g_free(state->analog_channels); | |
467 | g_free(state); | |
468 | } | |
469 | ||
470 | SR_PRIV int lecroy_xstream_init_device(struct sr_dev_inst *sdi) | |
471 | { | |
472 | char command[MAX_COMMAND_SIZE]; | |
473 | int model_index; | |
474 | unsigned int i, j; | |
475 | struct sr_channel *ch; | |
476 | struct dev_context *devc; | |
477 | gboolean channel_enabled; | |
478 | ||
479 | devc = sdi->priv; | |
480 | model_index = -1; | |
481 | ||
482 | /* Find the exact model. */ | |
483 | for (i = 0; i < ARRAY_SIZE(scope_models); i++) { | |
484 | for (j = 0; scope_models[i].name[j]; j++) { | |
485 | if (!strcmp(sdi->model, scope_models[i].name[j])) { | |
486 | model_index = i; | |
487 | break; | |
488 | } | |
489 | } | |
490 | if (model_index != -1) | |
491 | break; | |
492 | } | |
493 | ||
494 | if (model_index == -1) { | |
495 | sr_dbg("Unsupported LECROY device."); | |
496 | return SR_ERR_NA; | |
497 | } | |
498 | ||
499 | devc->analog_groups = g_malloc0(sizeof(struct sr_channel_group*) * | |
500 | scope_models[model_index].analog_channels); | |
501 | ||
502 | /* Add analog channels. */ | |
503 | for (i = 0; i < scope_models[model_index].analog_channels; i++) { | |
504 | ||
505 | g_snprintf(command, sizeof(command), "C%d:TRACE?", i+1); | |
506 | ||
507 | if (sr_scpi_get_bool(sdi->conn, command, &channel_enabled) != SR_OK) | |
508 | return SR_ERR; | |
509 | ||
510 | g_snprintf(command, sizeof(command), "C%d:VDIV?", i+1); | |
511 | ||
512 | ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, channel_enabled, | |
513 | (*scope_models[model_index].analog_names)[i]); | |
514 | ||
515 | devc->analog_groups[i] = g_malloc0(sizeof(struct sr_channel_group)); | |
516 | ||
517 | devc->analog_groups[i]->name = g_strdup( | |
518 | (char *)(*scope_models[model_index].analog_names)[i]); | |
519 | devc->analog_groups[i]->channels = g_slist_append(NULL, ch); | |
520 | ||
521 | sdi->channel_groups = g_slist_append(sdi->channel_groups, | |
522 | devc->analog_groups[i]); | |
523 | } | |
524 | ||
525 | devc->model_config = &scope_models[model_index]; | |
526 | devc->frame_limit = 0; | |
527 | ||
528 | if (!(devc->model_state = scope_state_new(devc->model_config))) | |
529 | return SR_ERR_MALLOC; | |
530 | ||
531 | return SR_OK; | |
532 | } | |
533 | ||
534 | static int lecroy_waveform_2_x_to_analog(GByteArray *data, | |
535 | struct lecroy_wavedesc *desc, | |
536 | struct sr_datafeed_analog *analog) | |
537 | { | |
538 | struct sr_analog_encoding *encoding = analog->encoding; | |
539 | struct sr_analog_meaning *meaning = analog->meaning; | |
540 | struct sr_analog_spec *spec = analog->spec; | |
541 | float *data_float; | |
542 | int16_t *waveform_data; | |
543 | unsigned int i, num_samples; | |
544 | ||
545 | data_float = g_malloc(desc->version_2_x.wave_array_count * sizeof(float)); | |
546 | num_samples = desc->version_2_x.wave_array_count; | |
547 | ||
548 | waveform_data = (int16_t *)(data->data + | |
549 | + desc->version_2_x.wave_descriptor_length | |
550 | + desc->version_2_x.user_text_len); | |
551 | ||
552 | for(i = 0; i < num_samples; i++) | |
553 | data_float[i] = (float)waveform_data[i] | |
554 | * desc->version_2_x.vertical_gain | |
555 | + desc->version_2_x.vertical_offset; | |
556 | ||
557 | ||
558 | analog->data = data_float; | |
559 | analog->num_samples = num_samples; | |
560 | ||
561 | encoding->unitsize = sizeof(float); | |
562 | encoding->is_signed = TRUE; | |
563 | encoding->is_float = TRUE; | |
564 | encoding->is_bigendian = FALSE; | |
565 | encoding->scale.p = 1; | |
566 | encoding->scale.q = 1; | |
567 | encoding->offset.p = 0; | |
568 | encoding->offset.q = 1; | |
569 | ||
570 | encoding->digits = 6; | |
571 | encoding->is_digits_decimal = FALSE; | |
572 | ||
573 | if (strcmp(desc->version_2_x.vertunit, "A")) { | |
574 | meaning->mq = SR_MQ_CURRENT; | |
575 | meaning->unit = SR_UNIT_AMPERE; | |
576 | } else { | |
577 | /* default to voltage */ | |
578 | meaning->mq = SR_MQ_VOLTAGE; | |
579 | meaning->unit = SR_UNIT_VOLT; | |
580 | } | |
581 | ||
582 | meaning->mqflags = 0; | |
583 | spec->spec_digits = 3; | |
584 | return SR_OK; | |
585 | } | |
586 | ||
587 | static int lecroy_waveform_to_analog(GByteArray *data, | |
588 | struct sr_datafeed_analog *analog) | |
589 | { | |
590 | struct lecroy_wavedesc *desc; | |
591 | ||
592 | if (data->len < sizeof(struct lecroy_wavedesc)) | |
593 | return SR_ERR; | |
594 | ||
595 | desc = (struct lecroy_wavedesc *)data->data; | |
596 | ||
597 | if (!strncmp(desc->template_name, "LECROY_2_2", 16) || | |
598 | !strncmp(desc->template_name, "LECROY_2_3", 16)) { | |
599 | return lecroy_waveform_2_x_to_analog(data, desc, analog); | |
600 | } | |
601 | ||
602 | sr_err("Waveformat template '%.16s' not supported\n", desc->template_name); | |
603 | return SR_ERR; | |
604 | } | |
605 | ||
606 | SR_PRIV int lecroy_xstream_receive_data(int fd, int revents, void *cb_data) | |
607 | { | |
608 | struct sr_channel *ch; | |
609 | struct sr_dev_inst *sdi; | |
610 | struct dev_context *devc; | |
611 | struct sr_datafeed_packet packet; | |
612 | GByteArray *data; | |
613 | struct sr_datafeed_analog analog; | |
614 | struct sr_analog_encoding encoding; | |
615 | struct sr_analog_meaning meaning; | |
616 | struct sr_analog_spec spec; | |
617 | char buf[8]; | |
618 | (void)fd; | |
619 | (void)revents; | |
620 | ||
621 | data = NULL; | |
622 | ||
623 | if (!(sdi = cb_data)) | |
624 | return TRUE; | |
625 | ||
626 | if (!(devc = sdi->priv)) | |
627 | return TRUE; | |
628 | ||
629 | ch = devc->current_channel->data; | |
630 | ||
631 | /* | |
632 | * Send "frame begin" packet upon reception of data for the | |
633 | * first enabled channel. | |
634 | */ | |
635 | if (devc->current_channel == devc->enabled_channels) { | |
636 | packet.type = SR_DF_FRAME_BEGIN; | |
637 | sr_session_send(sdi, &packet); | |
638 | } | |
639 | ||
640 | if (ch->type != SR_CHANNEL_ANALOG) | |
641 | return SR_ERR; | |
642 | /* | |
643 | * Pass on the received data of the channel(s). | |
644 | */ | |
645 | if (sr_scpi_read_data(sdi->conn, buf, 4) != 4) { | |
646 | sr_err("reading header failed\n"); | |
647 | return TRUE; | |
648 | } | |
649 | ||
650 | if (sr_scpi_get_block(sdi->conn, NULL, &data) != SR_OK) { | |
651 | if (data) | |
652 | g_byte_array_free(data, TRUE); | |
653 | return TRUE; | |
654 | } | |
655 | ||
656 | analog.encoding = &encoding; | |
657 | analog.meaning = &meaning; | |
658 | analog.spec = &spec; | |
659 | ||
660 | if (lecroy_waveform_to_analog(data, &analog) != SR_OK) | |
661 | return SR_ERR; | |
662 | ||
663 | meaning.channels = g_slist_append(NULL, ch); | |
664 | packet.payload = &analog; | |
665 | packet.type = SR_DF_ANALOG; | |
666 | sr_session_send(sdi, &packet); | |
667 | ||
668 | g_byte_array_free(data, TRUE); | |
669 | data = NULL; | |
670 | ||
671 | g_slist_free(meaning.channels); | |
672 | g_free(analog.data); | |
673 | ||
674 | ||
675 | /* | |
676 | * Advance to the next enabled channel. When data for all enabled | |
677 | * channels was received, then flush potentially queued logic data, | |
678 | * and send the "frame end" packet. | |
679 | */ | |
680 | if (devc->current_channel->next) { | |
681 | devc->current_channel = devc->current_channel->next; | |
682 | lecroy_xstream_request_data(sdi); | |
683 | return TRUE; | |
684 | } | |
685 | ||
686 | packet.type = SR_DF_FRAME_END; | |
687 | sr_session_send(sdi, &packet); | |
688 | ||
689 | /* | |
690 | * End of frame was reached. Stop acquisition after the specified | |
691 | * number of frames, or continue reception by starting over at | |
692 | * the first enabled channel. | |
693 | */ | |
694 | if (++devc->num_frames == devc->frame_limit) { | |
695 | sdi->driver->dev_acquisition_stop(sdi); | |
696 | } else { | |
697 | devc->current_channel = devc->enabled_channels; | |
698 | lecroy_xstream_request_data(sdi); | |
699 | } | |
700 | ||
701 | return TRUE; | |
702 | } |