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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 abraxa (Soeren Apel) <soeren@apelpie.net> | |
5 | * Based on the Hameg HMO driver by poljar (Damir Jelić) <poljarinho@gmail.com> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | /** @file | |
22 | * <em>Yokogawa DL/DLM series</em> oscilloscope driver | |
23 | * @internal | |
24 | */ | |
25 | ||
26 | #include "protocol.h" | |
27 | ||
28 | static const uint32_t dlm_devopts[] = { | |
29 | SR_CONF_LOGIC_ANALYZER, | |
30 | SR_CONF_OSCILLOSCOPE, | |
31 | SR_CONF_LIMIT_FRAMES | SR_CONF_SET, | |
32 | SR_CONF_SAMPLERATE | SR_CONF_GET, | |
33 | SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
34 | SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
35 | SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
36 | SR_CONF_NUM_HDIV | SR_CONF_GET, | |
37 | SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET, | |
38 | }; | |
39 | ||
40 | static const uint32_t dlm_analog_devopts[] = { | |
41 | SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
42 | SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
43 | SR_CONF_NUM_VDIV | SR_CONF_GET, | |
44 | }; | |
45 | ||
46 | static const char *dlm_coupling_options[] = { | |
47 | "AC", | |
48 | "DC", | |
49 | "DC50", | |
50 | "GND", | |
51 | NULL, | |
52 | }; | |
53 | ||
54 | /* Note: Values must correlate to the trigger_slopes values */ | |
55 | static const char *dlm_trigger_slopes[] = { | |
56 | "r", | |
57 | "f", | |
58 | NULL, | |
59 | }; | |
60 | ||
61 | static const char *dlm_2ch_trigger_sources[] = { | |
62 | "1", | |
63 | "2", | |
64 | "LINE", | |
65 | "EXT", | |
66 | NULL, | |
67 | }; | |
68 | ||
69 | /* TODO: Is BITx handled correctly or is Dx required? */ | |
70 | static const char *dlm_4ch_trigger_sources[] = { | |
71 | "1", | |
72 | "2", | |
73 | "3", | |
74 | "4", | |
75 | "LINE", | |
76 | "EXT", | |
77 | "BIT1", | |
78 | "BIT2", | |
79 | "BIT3", | |
80 | "BIT4", | |
81 | "BIT5", | |
82 | "BIT6", | |
83 | "BIT7", | |
84 | "BIT8", | |
85 | NULL, | |
86 | }; | |
87 | ||
88 | static const uint64_t dlm_timebases[][2] = { | |
89 | /* nanoseconds */ | |
90 | { 1, 1000000000 }, | |
91 | { 2, 1000000000 }, | |
92 | { 5, 1000000000 }, | |
93 | { 10, 1000000000 }, | |
94 | { 20, 1000000000 }, | |
95 | { 50, 1000000000 }, | |
96 | { 100, 1000000000 }, | |
97 | { 200, 1000000000 }, | |
98 | { 500, 1000000000 }, | |
99 | /* microseconds */ | |
100 | { 1, 1000000 }, | |
101 | { 2, 1000000 }, | |
102 | { 5, 1000000 }, | |
103 | { 10, 1000000 }, | |
104 | { 20, 1000000 }, | |
105 | { 50, 1000000 }, | |
106 | { 100, 1000000 }, | |
107 | { 200, 1000000 }, | |
108 | { 500, 1000000 }, | |
109 | /* milliseconds */ | |
110 | { 1, 1000 }, | |
111 | { 2, 1000 }, | |
112 | { 5, 1000 }, | |
113 | { 10, 1000 }, | |
114 | { 20, 1000 }, | |
115 | { 50, 1000 }, | |
116 | { 100, 1000 }, | |
117 | { 200, 1000 }, | |
118 | { 500, 1000 }, | |
119 | /* seconds */ | |
120 | { 1, 1 }, | |
121 | { 2, 1 }, | |
122 | { 5, 1 }, | |
123 | { 10, 1 }, | |
124 | { 20, 1 }, | |
125 | { 50, 1 }, | |
126 | { 100, 1 }, | |
127 | { 200, 1 }, | |
128 | { 500, 1 }, | |
129 | }; | |
130 | ||
131 | static const uint64_t dlm_vdivs[][2] = { | |
132 | /* millivolts */ | |
133 | { 2, 1000 }, | |
134 | { 5, 1000 }, | |
135 | { 10, 1000 }, | |
136 | { 20, 1000 }, | |
137 | { 50, 1000 }, | |
138 | { 100, 1000 }, | |
139 | { 200, 1000 }, | |
140 | { 500, 1000 }, | |
141 | /* volts */ | |
142 | { 1, 1 }, | |
143 | { 2, 1 }, | |
144 | { 5, 1 }, | |
145 | { 10, 1 }, | |
146 | { 20, 1 }, | |
147 | { 50, 1 }, | |
148 | { 100, 1 }, | |
149 | { 200, 1 }, | |
150 | { 500, 1 }, | |
151 | }; | |
152 | ||
153 | static const char *scope_analog_channel_names[] = { | |
154 | "1", | |
155 | "2", | |
156 | "3", | |
157 | "4" | |
158 | }; | |
159 | ||
160 | static const char *scope_digital_channel_names[] = { | |
161 | "D0", | |
162 | "D1", | |
163 | "D2", | |
164 | "D3", | |
165 | "D4", | |
166 | "D5", | |
167 | "D6", | |
168 | "D7" | |
169 | }; | |
170 | ||
171 | static struct scope_config scope_models[] = { | |
172 | { | |
173 | .model_id = {"710105", "710115", "710125", NULL}, | |
174 | .model_name = {"DLM2022", "DLM2032", "DLM2052", NULL}, | |
175 | .analog_channels = 2, | |
176 | .digital_channels = 0, | |
177 | .pods = 0, | |
178 | ||
179 | .analog_names = &scope_analog_channel_names, | |
180 | .digital_names = &scope_digital_channel_names, | |
181 | ||
182 | .devopts = &dlm_devopts, | |
183 | .num_devopts = ARRAY_SIZE(dlm_devopts), | |
184 | ||
185 | .analog_devopts = &dlm_analog_devopts, | |
186 | .num_analog_devopts = ARRAY_SIZE(dlm_analog_devopts), | |
187 | ||
188 | .coupling_options = &dlm_coupling_options, | |
189 | .trigger_sources = &dlm_2ch_trigger_sources, | |
190 | .trigger_slopes = &dlm_trigger_slopes, | |
191 | ||
192 | .timebases = &dlm_timebases, | |
193 | .num_timebases = ARRAY_SIZE(dlm_timebases), | |
194 | ||
195 | .vdivs = &dlm_vdivs, | |
196 | .num_vdivs = ARRAY_SIZE(dlm_vdivs), | |
197 | ||
198 | .num_xdivs = 10, | |
199 | .num_ydivs = 8, | |
200 | }, | |
201 | { | |
202 | .model_id = {"710110", "710120", "710130", NULL}, | |
203 | .model_name = {"DLM2024", "DLM2034", "DLM2054", NULL}, | |
204 | .analog_channels = 4, | |
205 | .digital_channels = 8, | |
206 | .pods = 1, | |
207 | ||
208 | .analog_names = &scope_analog_channel_names, | |
209 | .digital_names = &scope_digital_channel_names, | |
210 | ||
211 | .devopts = &dlm_devopts, | |
212 | .num_devopts = ARRAY_SIZE(dlm_devopts), | |
213 | ||
214 | .analog_devopts = &dlm_analog_devopts, | |
215 | .num_analog_devopts = ARRAY_SIZE(dlm_analog_devopts), | |
216 | ||
217 | .coupling_options = &dlm_coupling_options, | |
218 | .trigger_sources = &dlm_4ch_trigger_sources, | |
219 | .trigger_slopes = &dlm_trigger_slopes, | |
220 | ||
221 | .timebases = &dlm_timebases, | |
222 | .num_timebases = ARRAY_SIZE(dlm_timebases), | |
223 | ||
224 | .vdivs = &dlm_vdivs, | |
225 | .num_vdivs = ARRAY_SIZE(dlm_vdivs), | |
226 | ||
227 | .num_xdivs = 10, | |
228 | .num_ydivs = 8, | |
229 | }, | |
230 | }; | |
231 | ||
232 | /** | |
233 | * Prints out the state of the device as we currently know it. | |
234 | * | |
235 | * @param config This is the scope configuration. | |
236 | * @param state The current scope state to print. | |
237 | */ | |
238 | static void scope_state_dump(struct scope_config *config, | |
239 | struct scope_state *state) | |
240 | { | |
241 | unsigned int i; | |
242 | char *tmp; | |
243 | ||
244 | for (i = 0; i < config->analog_channels; ++i) { | |
245 | tmp = sr_voltage_string((*config->vdivs)[state->analog_states[i].vdiv][0], | |
246 | (*config->vdivs)[state->analog_states[i].vdiv][1]); | |
247 | sr_info("State of analog channel %d -> %s : %s (coupling) %s (vdiv) %2.2e (offset)", | |
248 | i + 1, state->analog_states[i].state ? "On" : "Off", | |
249 | (*config->coupling_options)[state->analog_states[i].coupling], | |
250 | tmp, state->analog_states[i].vertical_offset); | |
251 | } | |
252 | ||
253 | for (i = 0; i < config->digital_channels; ++i) { | |
254 | sr_info("State of digital channel %d -> %s", i, | |
255 | state->digital_states[i] ? "On" : "Off"); | |
256 | } | |
257 | ||
258 | for (i = 0; i < config->pods; ++i) { | |
259 | sr_info("State of digital POD %d -> %s", i, | |
260 | state->pod_states[i] ? "On" : "Off"); | |
261 | } | |
262 | ||
263 | tmp = sr_period_string((*config->timebases)[state->timebase][0] * | |
264 | (*config->timebases)[state->timebase][1]); | |
265 | sr_info("Current timebase: %s", tmp); | |
266 | g_free(tmp); | |
267 | ||
268 | tmp = sr_samplerate_string(state->sample_rate); | |
269 | sr_info("Current samplerate: %s", tmp); | |
270 | g_free(tmp); | |
271 | ||
272 | sr_info("Current samples per acquisition (i.e. frame): %d", | |
273 | state->samples_per_frame); | |
274 | ||
275 | sr_info("Current trigger: %s (source), %s (slope) %.2f (offset)", | |
276 | (*config->trigger_sources)[state->trigger_source], | |
277 | (*config->trigger_slopes)[state->trigger_slope], | |
278 | state->horiz_triggerpos); | |
279 | } | |
280 | ||
281 | /** | |
282 | * Searches through an array of strings and returns the index to the | |
283 | * array where a given string is located. | |
284 | * | |
285 | * @param value The string to search for. | |
286 | * @param array The array of strings. | |
287 | * @param result The index at which value is located in array. -1 on error. | |
288 | * | |
289 | * @return SR_ERR when value couldn't be found, SR_OK otherwise. | |
290 | */ | |
291 | static int array_option_get(char *value, const char *(*array)[], | |
292 | int *result) | |
293 | { | |
294 | unsigned int i; | |
295 | ||
296 | *result = -1; | |
297 | ||
298 | for (i = 0; (*array)[i]; ++i) | |
299 | if (!g_strcmp0(value, (*array)[i])) { | |
300 | *result = i; | |
301 | break; | |
302 | } | |
303 | ||
304 | if (*result == -1) | |
305 | return SR_ERR; | |
306 | ||
307 | return SR_OK; | |
308 | } | |
309 | ||
310 | /** | |
311 | * This function takes a value of the form "2.000E-03", converts it to a | |
312 | * significand / factor pair and returns the index of an array where | |
313 | * a matching pair was found. | |
314 | * | |
315 | * It's a bit convoluted because of floating-point issues. The value "10.00E-09" | |
316 | * is parsed by g_ascii_strtod() as 0.000000009999999939, for example. | |
317 | * Therefore it's easier to break the number up into two strings and handle | |
318 | * them separately. | |
319 | * | |
320 | * @param value The string to be parsed. | |
321 | * @param array The array of s/f pairs. | |
322 | * @param array_len The number of pairs in the array. | |
323 | * @param result The index at which a matching pair was found. | |
324 | * | |
325 | * @return SR_ERR on any parsing error, SR_OK otherwise. | |
326 | */ | |
327 | static int array_float_get(gchar *value, const uint64_t array[][2], | |
328 | int array_len, int *result) | |
329 | { | |
330 | int i; | |
331 | uint64_t f; | |
332 | float s; | |
333 | unsigned int s_int; | |
334 | gchar ss[10], es[10]; | |
335 | ||
336 | memset(ss, 0, sizeof(ss)); | |
337 | memset(es, 0, sizeof(es)); | |
338 | ||
339 | strncpy(ss, value, 5); | |
340 | strncpy(es, &(value[6]), 3); | |
341 | ||
342 | if (sr_atof_ascii(ss, &s) != SR_OK) | |
343 | return SR_ERR; | |
344 | if (sr_atoi(es, &i) != SR_OK) | |
345 | return SR_ERR; | |
346 | ||
347 | /* Transform e.g. 10^-03 to 1000 as the array stores the inverse. */ | |
348 | f = pow(10, abs(i)); | |
349 | ||
350 | /* Adjust the significand/factor pair to make sure | |
351 | * that f is a multiple of 1000. | |
352 | */ | |
353 | while ((int)fmod(log10(f), 3) > 0) { s *= 10; f *= 10; } | |
354 | ||
355 | /* Truncate s to circumvent rounding errors. */ | |
356 | s_int = (unsigned int)s; | |
357 | ||
358 | for (i = 0; i < array_len; i++) { | |
359 | if ( (s_int == array[i][0]) && (f == array[i][1]) ) { | |
360 | *result = i; | |
361 | return SR_OK; | |
362 | } | |
363 | } | |
364 | ||
365 | return SR_ERR; | |
366 | } | |
367 | ||
368 | /** | |
369 | * Obtains information about all analog channels from the oscilloscope. | |
370 | * The internal state information is updated accordingly. | |
371 | * | |
372 | * @param scpi An open SCPI connection. | |
373 | * @param config The device's device configuration. | |
374 | * @param state The device's state information. | |
375 | * | |
376 | * @return SR_ERR on error, SR_OK otherwise. | |
377 | */ | |
378 | static int analog_channel_state_get(struct sr_scpi_dev_inst *scpi, | |
379 | struct scope_config *config, | |
380 | struct scope_state *state) | |
381 | { | |
382 | int i, j; | |
383 | gchar *response; | |
384 | ||
385 | for (i = 0; i < config->analog_channels; ++i) { | |
386 | ||
387 | if (dlm_analog_chan_state_get(scpi, i + 1, | |
388 | &state->analog_states[i].state) != SR_OK) | |
389 | return SR_ERR; | |
390 | ||
391 | if (dlm_analog_chan_vdiv_get(scpi, i + 1, &response) != SR_OK) | |
392 | return SR_ERR; | |
393 | ||
394 | if (array_float_get(response, *config->vdivs, config->num_vdivs, | |
395 | &j) != SR_OK) { | |
396 | g_free(response); | |
397 | return SR_ERR; | |
398 | } | |
399 | ||
400 | g_free(response); | |
401 | state->analog_states[i].vdiv = j; | |
402 | ||
403 | if (dlm_analog_chan_voffs_get(scpi, i + 1, | |
404 | &state->analog_states[i].vertical_offset) != SR_OK) | |
405 | return SR_ERR; | |
406 | ||
407 | if (dlm_analog_chan_wrange_get(scpi, i + 1, | |
408 | &state->analog_states[i].waveform_range) != SR_OK) | |
409 | return SR_ERR; | |
410 | ||
411 | if (dlm_analog_chan_woffs_get(scpi, i + 1, | |
412 | &state->analog_states[i].waveform_offset) != SR_OK) | |
413 | return SR_ERR; | |
414 | ||
415 | if (dlm_analog_chan_coupl_get(scpi, i + 1, &response) != SR_OK) { | |
416 | g_free(response); | |
417 | return SR_ERR; | |
418 | } | |
419 | ||
420 | if (array_option_get(response, config->coupling_options, | |
421 | &state->analog_states[i].coupling) != SR_OK) { | |
422 | g_free(response); | |
423 | return SR_ERR; | |
424 | } | |
425 | g_free(response); | |
426 | } | |
427 | ||
428 | return SR_OK; | |
429 | } | |
430 | ||
431 | /** | |
432 | * Obtains information about all digital channels from the oscilloscope. | |
433 | * The internal state information is updated accordingly. | |
434 | * | |
435 | * @param scpi An open SCPI connection. | |
436 | * @param config The device's device configuration. | |
437 | * @param state The device's state information. | |
438 | * | |
439 | * @return SR_ERR on error, SR_OK otherwise. | |
440 | */ | |
441 | static int digital_channel_state_get(struct sr_scpi_dev_inst *scpi, | |
442 | struct scope_config *config, | |
443 | struct scope_state *state) | |
444 | { | |
445 | unsigned int i; | |
446 | ||
447 | if (!config->digital_channels) | |
448 | { | |
449 | sr_warn("Tried obtaining digital channel states on a " \ | |
450 | "model without digital inputs."); | |
451 | return SR_OK; | |
452 | } | |
453 | ||
454 | for (i = 0; i < config->digital_channels; ++i) { | |
455 | if (dlm_digital_chan_state_get(scpi, i + 1, | |
456 | &state->digital_states[i]) != SR_OK) { | |
457 | return SR_ERR; | |
458 | } | |
459 | } | |
460 | ||
461 | if (!config->pods) | |
462 | { | |
463 | sr_warn("Tried obtaining pod states on a model without pods."); | |
464 | return SR_OK; | |
465 | } | |
466 | ||
467 | for (i = 0; i < config->pods; ++i) { | |
468 | if (dlm_digital_pod_state_get(scpi, i + 'A', | |
469 | &state->pod_states[i]) != SR_OK) | |
470 | return SR_ERR; | |
471 | } | |
472 | ||
473 | return SR_OK; | |
474 | } | |
475 | ||
476 | /** | |
477 | * Obtains information about the sample rate from the oscilloscope. | |
478 | * The internal state information is updated accordingly. | |
479 | * | |
480 | * @param sdi The device instance. | |
481 | * | |
482 | * @return SR_ERR on error, SR_OK otherwise. | |
483 | */ | |
484 | SR_PRIV int dlm_sample_rate_query(const struct sr_dev_inst *sdi) | |
485 | { | |
486 | struct dev_context *devc; | |
487 | struct scope_state *state; | |
488 | float tmp_float; | |
489 | ||
490 | devc = sdi->priv; | |
491 | state = devc->model_state; | |
492 | ||
493 | /* No need to find an active channel to query the sample rate: | |
494 | * querying any channel will do, so we use channel 1 all the time. | |
495 | */ | |
496 | if (dlm_analog_chan_srate_get(sdi->conn, 1, &tmp_float) != SR_OK) | |
497 | return SR_ERR; | |
498 | ||
499 | state->sample_rate = tmp_float; | |
500 | ||
501 | return SR_OK; | |
502 | } | |
503 | ||
504 | /** | |
505 | * Obtains information about the current device state from the oscilloscope, | |
506 | * including all analog and digital channel configurations. | |
507 | * The internal state information is updated accordingly. | |
508 | * | |
509 | * @param sdi The device instance. | |
510 | * | |
511 | * @return SR_ERR on error, SR_OK otherwise. | |
512 | */ | |
513 | SR_PRIV int dlm_scope_state_query(struct sr_dev_inst *sdi) | |
514 | { | |
515 | struct dev_context *devc; | |
516 | struct scope_state *state; | |
517 | struct scope_config *config; | |
518 | float tmp_float; | |
519 | gchar *response; | |
520 | int i; | |
521 | ||
522 | devc = sdi->priv; | |
523 | config = devc->model_config; | |
524 | state = devc->model_state; | |
525 | ||
526 | if (analog_channel_state_get(sdi->conn, config, state) != SR_OK) | |
527 | return SR_ERR; | |
528 | ||
529 | if (digital_channel_state_get(sdi->conn, config, state) != SR_OK) | |
530 | return SR_ERR; | |
531 | ||
532 | if (dlm_timebase_get(sdi->conn, &response) != SR_OK) | |
533 | return SR_ERR; | |
534 | ||
535 | if (array_float_get(response, *config->timebases, | |
536 | config->num_timebases, &i) != SR_OK) { | |
537 | g_free(response); | |
538 | return SR_ERR; | |
539 | } | |
540 | ||
541 | g_free(response); | |
542 | state->timebase = i; | |
543 | ||
544 | if (dlm_horiz_trigger_pos_get(sdi->conn, &tmp_float) != SR_OK) | |
545 | return SR_ERR; | |
546 | ||
547 | /* TODO: Check if the calculation makes sense for the DLM. */ | |
548 | state->horiz_triggerpos = tmp_float / | |
549 | (((double)(*config->timebases)[state->timebase][0] / | |
550 | (*config->timebases)[state->timebase][1]) * config->num_xdivs); | |
551 | state->horiz_triggerpos -= 0.5; | |
552 | state->horiz_triggerpos *= -1; | |
553 | ||
554 | if (dlm_trigger_source_get(sdi->conn, &response) != SR_OK) { | |
555 | g_free(response); | |
556 | return SR_ERR; | |
557 | } | |
558 | ||
559 | if (array_option_get(response, config->trigger_sources, | |
560 | &state->trigger_source) != SR_OK) { | |
561 | g_free(response); | |
562 | return SR_ERR; | |
563 | } | |
564 | ||
565 | g_free(response); | |
566 | ||
567 | if (dlm_trigger_slope_get(sdi->conn, &i) != SR_OK) | |
568 | return SR_ERR; | |
569 | ||
570 | state->trigger_slope = i; | |
571 | ||
572 | if (dlm_acq_length_get(sdi->conn, &state->samples_per_frame) != SR_OK) { | |
573 | sr_err("Failed to query acquisition length."); | |
574 | return SR_ERR; | |
575 | } | |
576 | ||
577 | dlm_sample_rate_query(sdi); | |
578 | ||
579 | scope_state_dump(config, state); | |
580 | ||
581 | return SR_OK; | |
582 | } | |
583 | ||
584 | /** | |
585 | * Creates a new device state structure. | |
586 | * | |
587 | * @param config The device configuration to use. | |
588 | * | |
589 | * @return The newly allocated scope_state struct. | |
590 | */ | |
591 | static struct scope_state *dlm_scope_state_new(struct scope_config *config) | |
592 | { | |
593 | struct scope_state *state; | |
594 | ||
595 | state = g_malloc0(sizeof(struct scope_state)); | |
596 | ||
597 | state->analog_states = g_malloc0(config->analog_channels * | |
598 | sizeof(struct analog_channel_state)); | |
599 | ||
600 | state->digital_states = g_malloc0(config->digital_channels * | |
601 | sizeof(gboolean)); | |
602 | ||
603 | state->pod_states = g_malloc0(config->pods * sizeof(gboolean)); | |
604 | ||
605 | return state; | |
606 | } | |
607 | ||
608 | /** | |
609 | * Frees the memory that was allocated by a call to dlm_scope_state_new(). | |
610 | * | |
611 | * @param state The device state structure whose memory is to be freed. | |
612 | */ | |
613 | SR_PRIV void dlm_scope_state_destroy(struct scope_state *state) | |
614 | { | |
615 | g_free(state->analog_states); | |
616 | g_free(state->digital_states); | |
617 | g_free(state->pod_states); | |
618 | g_free(state); | |
619 | } | |
620 | ||
621 | SR_PRIV int dlm_model_get(char *model_id, char **model_name, int *model_index) | |
622 | { | |
623 | unsigned int i, j; | |
624 | ||
625 | *model_index = -1; | |
626 | *model_name = NULL; | |
627 | ||
628 | for (i = 0; i < ARRAY_SIZE(scope_models); i++) { | |
629 | for (j = 0; scope_models[i].model_id[j]; j++) { | |
630 | if (!strcmp(model_id, scope_models[i].model_id[j])) { | |
631 | *model_index = i; | |
632 | *model_name = (char *)scope_models[i].model_name[j]; | |
633 | break; | |
634 | } | |
635 | } | |
636 | if (*model_index != -1) | |
637 | break; | |
638 | } | |
639 | ||
640 | if (*model_index == -1) { | |
641 | sr_err("Found unsupported DLM device with model identifier %s.", | |
642 | model_id); | |
643 | return SR_ERR_NA; | |
644 | } | |
645 | ||
646 | return SR_OK; | |
647 | } | |
648 | ||
649 | /** | |
650 | * Attempts to initialize a DL/DLM device and prepares internal structures | |
651 | * if a suitable device was found. | |
652 | * | |
653 | * @param sdi The device instance. | |
654 | */ | |
655 | SR_PRIV int dlm_device_init(struct sr_dev_inst *sdi, int model_index) | |
656 | { | |
657 | char tmp[25]; | |
658 | int i; | |
659 | struct sr_channel *ch; | |
660 | struct dev_context *devc; | |
661 | ||
662 | devc = sdi->priv; | |
663 | ||
664 | devc->analog_groups = g_malloc0(sizeof(struct sr_channel_group*) * | |
665 | scope_models[model_index].analog_channels); | |
666 | ||
667 | devc->digital_groups = g_malloc0(sizeof(struct sr_channel_group*) * | |
668 | scope_models[model_index].digital_channels); | |
669 | ||
670 | /* Add analog channels. */ | |
671 | for (i = 0; i < scope_models[model_index].analog_channels; i++) { | |
672 | ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, | |
673 | (*scope_models[model_index].analog_names)[i]); | |
674 | ||
675 | devc->analog_groups[i] = g_malloc0(sizeof(struct sr_channel_group)); | |
676 | ||
677 | devc->analog_groups[i]->name = g_strdup( | |
678 | (char *)(*scope_models[model_index].analog_names)[i]); | |
679 | devc->analog_groups[i]->channels = g_slist_append(NULL, ch); | |
680 | ||
681 | sdi->channel_groups = g_slist_append(sdi->channel_groups, | |
682 | devc->analog_groups[i]); | |
683 | } | |
684 | ||
685 | /* Add digital channel groups. */ | |
686 | for (i = 0; i < scope_models[model_index].pods; ++i) { | |
687 | g_snprintf(tmp, sizeof(tmp), "POD%d", i); | |
688 | ||
689 | devc->digital_groups[i] = g_malloc0(sizeof(struct sr_channel_group)); | |
690 | if (!devc->digital_groups[i]) | |
691 | return SR_ERR_MALLOC; | |
692 | ||
693 | devc->digital_groups[i]->name = g_strdup(tmp); | |
694 | sdi->channel_groups = g_slist_append(sdi->channel_groups, | |
695 | devc->digital_groups[i]); | |
696 | } | |
697 | ||
698 | /* Add digital channels. */ | |
699 | for (i = 0; i < scope_models[model_index].digital_channels; i++) { | |
700 | ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, | |
701 | (*scope_models[model_index].digital_names)[i]); | |
702 | ||
703 | devc->digital_groups[i / 8]->channels = g_slist_append( | |
704 | devc->digital_groups[i / 8]->channels, ch); | |
705 | } | |
706 | devc->model_config = &scope_models[model_index]; | |
707 | devc->frame_limit = 0; | |
708 | ||
709 | if (!(devc->model_state = dlm_scope_state_new(devc->model_config))) | |
710 | return SR_ERR_MALLOC; | |
711 | ||
712 | /* Disable non-standard response behavior. */ | |
713 | if (dlm_response_headers_set(sdi->conn, FALSE) != SR_OK) | |
714 | return SR_ERR; | |
715 | ||
716 | return SR_OK; | |
717 | } | |
718 | ||
719 | SR_PRIV int dlm_channel_data_request(const struct sr_dev_inst *sdi) | |
720 | { | |
721 | struct dev_context *devc; | |
722 | struct sr_channel *ch; | |
723 | int result; | |
724 | ||
725 | devc = sdi->priv; | |
726 | ch = devc->current_channel->data; | |
727 | ||
728 | switch (ch->type) { | |
729 | case SR_CHANNEL_ANALOG: | |
730 | result = dlm_analog_data_get(sdi->conn, ch->index + 1); | |
731 | break; | |
732 | case SR_CHANNEL_LOGIC: | |
733 | result = dlm_digital_data_get(sdi->conn); | |
734 | break; | |
735 | default: | |
736 | sr_err("Invalid channel type encountered (%d).", | |
737 | ch->type); | |
738 | result = SR_ERR; | |
739 | } | |
740 | ||
741 | if (result == SR_OK) | |
742 | devc->data_pending = TRUE; | |
743 | else | |
744 | devc->data_pending = FALSE; | |
745 | ||
746 | return result; | |
747 | } | |
748 | ||
749 | /** | |
750 | * Reads and removes the block data header from a given data input. | |
751 | * Format is #ndddd... with n being the number of decimal digits d. | |
752 | * The string dddd... contains the decimal-encoded length of the data. | |
753 | * Example: #9000000013 would yield a length of 13 bytes. | |
754 | * | |
755 | * @param data The input data. | |
756 | * @param len The determined input data length. | |
757 | */ | |
758 | static int dlm_block_data_header_process(GArray *data, int *len) | |
759 | { | |
760 | int i, n; | |
761 | gchar s[20]; | |
762 | ||
763 | if (g_array_index(data, gchar, 0) != '#') | |
764 | return SR_ERR; | |
765 | ||
766 | n = (uint8_t)(g_array_index(data, gchar, 1) - '0'); | |
767 | ||
768 | for (i = 0; i < n; i++) | |
769 | s[i] = g_array_index(data, gchar, 2 + i); | |
770 | s[i] = 0; | |
771 | ||
772 | if (sr_atoi(s, len) != SR_OK) | |
773 | return SR_ERR; | |
774 | ||
775 | g_array_remove_range(data, 0, 2 + n); | |
776 | ||
777 | return SR_OK; | |
778 | } | |
779 | ||
780 | /** | |
781 | * Turns raw sample data into voltages and sends them off to the session bus. | |
782 | * | |
783 | * @param data The raw sample data. | |
784 | * @ch_state Pointer to the state of the channel whose data we're processing. | |
785 | * @sdi The device instance. | |
786 | * | |
787 | * @return SR_ERR when data is trucated, SR_OK otherwise. | |
788 | */ | |
789 | static int dlm_analog_samples_send(GArray *data, | |
790 | struct analog_channel_state *ch_state, | |
791 | struct sr_dev_inst *sdi) | |
792 | { | |
793 | uint32_t i, samples; | |
794 | float voltage, range, offset; | |
795 | GArray *float_data; | |
796 | struct dev_context *devc; | |
797 | struct scope_state *model_state; | |
798 | struct sr_channel *ch; | |
799 | struct sr_datafeed_analog analog; | |
800 | struct sr_datafeed_packet packet; | |
801 | ||
802 | devc = sdi->priv; | |
803 | model_state = devc->model_state; | |
804 | samples = model_state->samples_per_frame; | |
805 | ch = devc->current_channel->data; | |
806 | ||
807 | if (data->len < samples * sizeof(uint8_t)) { | |
808 | sr_err("Truncated waveform data packet received."); | |
809 | return SR_ERR; | |
810 | } | |
811 | ||
812 | range = ch_state->waveform_range; | |
813 | offset = ch_state->waveform_offset; | |
814 | ||
815 | /* Convert byte sample to voltage according to | |
816 | * page 269 of the Communication Interface User's Manual. | |
817 | */ | |
818 | float_data = g_array_new(FALSE, FALSE, sizeof(float)); | |
819 | for (i = 0; i < samples; i++) { | |
820 | voltage = (float)g_array_index(data, int8_t, i); | |
821 | voltage = (range * voltage / | |
822 | DLM_DIVISION_FOR_BYTE_FORMAT) + offset; | |
823 | g_array_append_val(float_data, voltage); | |
824 | } | |
825 | ||
826 | analog.channels = g_slist_append(NULL, ch); | |
827 | analog.num_samples = float_data->len; | |
828 | analog.data = (float*)float_data->data; | |
829 | analog.mq = SR_MQ_VOLTAGE; | |
830 | analog.unit = SR_UNIT_VOLT; | |
831 | analog.mqflags = 0; | |
832 | packet.type = SR_DF_ANALOG; | |
833 | packet.payload = &analog; | |
834 | sr_session_send(sdi, &packet); | |
835 | g_slist_free(analog.channels); | |
836 | ||
837 | g_array_free(float_data, TRUE); | |
838 | g_array_remove_range(data, 0, samples * sizeof(uint8_t)); | |
839 | ||
840 | return SR_OK; | |
841 | } | |
842 | ||
843 | /** | |
844 | * Sends logic sample data off to the session bus. | |
845 | * | |
846 | * @param data The raw sample data. | |
847 | * @ch_state Pointer to the state of the channel whose data we're processing. | |
848 | * @sdi The device instance. | |
849 | * | |
850 | * @return SR_ERR when data is trucated, SR_OK otherwise. | |
851 | */ | |
852 | static int dlm_digital_samples_send(GArray *data, | |
853 | struct sr_dev_inst *sdi) | |
854 | { | |
855 | struct dev_context *devc; | |
856 | struct scope_state *model_state; | |
857 | uint32_t samples; | |
858 | struct sr_datafeed_logic logic; | |
859 | struct sr_datafeed_packet packet; | |
860 | ||
861 | devc = sdi->priv; | |
862 | model_state = devc->model_state; | |
863 | samples = model_state->samples_per_frame; | |
864 | ||
865 | if (data->len < samples * sizeof(uint8_t)) { | |
866 | sr_err("Truncated waveform data packet received."); | |
867 | return SR_ERR; | |
868 | } | |
869 | ||
870 | logic.length = samples; | |
871 | logic.unitsize = 1; | |
872 | logic.data = data->data; | |
873 | packet.type = SR_DF_LOGIC; | |
874 | packet.payload = &logic; | |
875 | sr_session_send(sdi, &packet); | |
876 | ||
877 | g_array_remove_range(data, 0, samples * sizeof(uint8_t)); | |
878 | ||
879 | return SR_OK; | |
880 | } | |
881 | ||
882 | /** | |
883 | * Attempts to query sample data from the oscilloscope in order to send it | |
884 | * to the session bus for further processing. | |
885 | * | |
886 | * @param fd The file descriptor used as the event source. | |
887 | * @param revents The received events. | |
888 | * @param cb_data Callback data, in this case our device instance. | |
889 | * | |
890 | * @return TRUE in case of success or a recoverable error, | |
891 | * FALSE when a fatal error was encountered. | |
892 | */ | |
893 | SR_PRIV int dlm_data_receive(int fd, int revents, void *cb_data) | |
894 | { | |
895 | struct sr_dev_inst *sdi; | |
896 | struct scope_state *model_state; | |
897 | struct dev_context *devc; | |
898 | struct sr_channel *ch; | |
899 | struct sr_datafeed_packet packet; | |
900 | int chunk_len, num_bytes; | |
901 | static GArray *data = NULL; | |
902 | ||
903 | (void)fd; | |
904 | (void)revents; | |
905 | ||
906 | if (!(sdi = cb_data)) | |
907 | return FALSE; | |
908 | ||
909 | if (!(devc = sdi->priv)) | |
910 | return FALSE; | |
911 | ||
912 | if (!(model_state = (struct scope_state*)devc->model_state)) | |
913 | return FALSE; | |
914 | ||
915 | /* Are we waiting for a response from the device? */ | |
916 | if (!devc->data_pending) | |
917 | return TRUE; | |
918 | ||
919 | /* Check if a new query response is coming our way. */ | |
920 | if (!data) { | |
921 | if (sr_scpi_read_begin(sdi->conn) == SR_OK) | |
922 | /* The 16 here accounts for the header and EOL. */ | |
923 | data = g_array_sized_new(FALSE, FALSE, sizeof(uint8_t), | |
924 | 16 + model_state->samples_per_frame); | |
925 | else | |
926 | return TRUE; | |
927 | } | |
928 | ||
929 | /* Store incoming data. */ | |
930 | chunk_len = sr_scpi_read_data(sdi->conn, devc->receive_buffer, | |
931 | RECEIVE_BUFFER_SIZE); | |
932 | if (chunk_len < 0) { | |
933 | sr_err("Error while reading data: %d", chunk_len); | |
934 | goto fail; | |
935 | } | |
936 | g_array_append_vals(data, devc->receive_buffer, chunk_len); | |
937 | ||
938 | /* Read the entire query response before processing. */ | |
939 | if (!sr_scpi_read_complete(sdi->conn)) | |
940 | return TRUE; | |
941 | ||
942 | /* We finished reading and are no longer waiting for data. */ | |
943 | devc->data_pending = FALSE; | |
944 | ||
945 | /* Signal the beginning of a new frame if this is the first channel. */ | |
946 | if (devc->current_channel == devc->enabled_channels) { | |
947 | packet.type = SR_DF_FRAME_BEGIN; | |
948 | sr_session_send(sdi, &packet); | |
949 | } | |
950 | ||
951 | if (dlm_block_data_header_process(data, &num_bytes) != SR_OK) { | |
952 | sr_err("Encountered malformed block data header."); | |
953 | goto fail; | |
954 | } | |
955 | ||
956 | if (num_bytes == 0) { | |
957 | sr_warn("Zero-length waveform data packet received. " \ | |
958 | "Live mode not supported yet, stopping " \ | |
959 | "acquisition and retrying."); | |
960 | /* Don't care about return value here. */ | |
961 | dlm_acquisition_stop(sdi->conn); | |
962 | g_array_free(data, TRUE); | |
963 | dlm_channel_data_request(sdi); | |
964 | return TRUE; | |
965 | } | |
966 | ||
967 | ch = devc->current_channel->data; | |
968 | switch (ch->type) { | |
969 | case SR_CHANNEL_ANALOG: | |
970 | if (dlm_analog_samples_send(data, | |
971 | &model_state->analog_states[ch->index], | |
972 | sdi) != SR_OK) | |
973 | goto fail; | |
974 | break; | |
975 | case SR_CHANNEL_LOGIC: | |
976 | if (dlm_digital_samples_send(data, sdi) != SR_OK) | |
977 | goto fail; | |
978 | break; | |
979 | default: | |
980 | sr_err("Invalid channel type encountered."); | |
981 | break; | |
982 | } | |
983 | ||
984 | g_array_free(data, TRUE); | |
985 | data = NULL; | |
986 | ||
987 | /* Signal the end of this frame if this was the last enabled channel | |
988 | * and set the next enabled channel. Then, request its data. | |
989 | */ | |
990 | if (!devc->current_channel->next) { | |
991 | packet.type = SR_DF_FRAME_END; | |
992 | sr_session_send(sdi, &packet); | |
993 | devc->current_channel = devc->enabled_channels; | |
994 | ||
995 | /* As of now we only support importing the current acquisition | |
996 | * data so we're going to stop at this point. | |
997 | */ | |
998 | sdi->driver->dev_acquisition_stop(sdi, cb_data); | |
999 | return TRUE; | |
1000 | } else | |
1001 | devc->current_channel = devc->current_channel->next; | |
1002 | ||
1003 | if (dlm_channel_data_request(sdi) != SR_OK) { | |
1004 | sr_err("Failed to request aquisition data."); | |
1005 | goto fail; | |
1006 | } | |
1007 | ||
1008 | return TRUE; | |
1009 | ||
1010 | fail: | |
1011 | if (data) { | |
1012 | g_array_free(data, TRUE); | |
1013 | data = NULL; | |
1014 | } | |
1015 | ||
1016 | return FALSE; | |
1017 | } |