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10763937 SA |
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 | ||
8ab929d6 SA |
21 | /** @file |
22 | * <em>Yokogawa DL/DLM series</em> oscilloscope driver | |
23 | * @internal | |
24 | */ | |
25 | ||
10763937 SA |
26 | #include "protocol.h" |
27 | ||
8ab929d6 SA |
28 | static const int32_t dlm_hwcaps[] = { |
29 | SR_CONF_LOGIC_ANALYZER, | |
30 | SR_CONF_OSCILLOSCOPE, | |
31 | SR_CONF_TRIGGER_SLOPE, | |
32 | SR_CONF_TRIGGER_SOURCE, | |
33 | SR_CONF_TIMEBASE, | |
34 | SR_CONF_NUM_TIMEBASE, | |
35 | SR_CONF_HORIZ_TRIGGERPOS, | |
36 | }; | |
37 | ||
38 | static const int32_t dlm_analog_caps[] = { | |
39 | SR_CONF_VDIV, | |
40 | SR_CONF_COUPLING, | |
41 | SR_CONF_NUM_VDIV, | |
42 | }; | |
43 | ||
44 | static const char *dlm_coupling_options[] = { | |
45 | "AC", | |
46 | "DC", | |
47 | "DC50", | |
48 | "GND", | |
49 | NULL, | |
50 | }; | |
51 | ||
52 | /* Note: Values must correlate to the trigger_slopes values */ | |
53 | static const char *dlm_trigger_slopes[] = { | |
54 | "r", | |
55 | "f", | |
56 | NULL, | |
57 | }; | |
58 | ||
59 | static const char *dlm_2ch_trigger_sources[] = { | |
60 | "1", | |
61 | "2", | |
62 | "LINE", | |
63 | "EXT", | |
64 | NULL, | |
65 | }; | |
66 | ||
67 | /* TODO: Is BITx handled correctly or is Dx required? */ | |
68 | static const char *dlm_4ch_trigger_sources[] = { | |
69 | "1", | |
70 | "2", | |
71 | "3", | |
72 | "4", | |
73 | "LINE", | |
74 | "EXT", | |
75 | "BIT1", | |
76 | "BIT2", | |
77 | "BIT3", | |
78 | "BIT4", | |
79 | "BIT5", | |
80 | "BIT6", | |
81 | "BIT7", | |
82 | "BIT8", | |
83 | NULL, | |
84 | }; | |
85 | ||
86 | static const uint64_t dlm_timebases[][2] = { | |
87 | /* nanoseconds */ | |
88 | { 1, 1000000000 }, | |
89 | { 2, 1000000000 }, | |
90 | { 5, 1000000000 }, | |
91 | { 10, 1000000000 }, | |
92 | { 20, 1000000000 }, | |
93 | { 50, 1000000000 }, | |
94 | { 100, 1000000000 }, | |
95 | { 200, 1000000000 }, | |
96 | { 500, 1000000000 }, | |
97 | /* microseconds */ | |
98 | { 1, 1000000 }, | |
99 | { 2, 1000000 }, | |
100 | { 5, 1000000 }, | |
101 | { 10, 1000000 }, | |
102 | { 20, 1000000 }, | |
103 | { 50, 1000000 }, | |
104 | { 100, 1000000 }, | |
105 | { 200, 1000000 }, | |
106 | { 500, 1000000 }, | |
107 | /* milliseconds */ | |
108 | { 1, 1000 }, | |
109 | { 2, 1000 }, | |
110 | { 5, 1000 }, | |
111 | { 10, 1000 }, | |
112 | { 20, 1000 }, | |
113 | { 50, 1000 }, | |
114 | { 100, 1000 }, | |
115 | { 200, 1000 }, | |
116 | { 500, 1000 }, | |
117 | /* seconds */ | |
118 | { 1, 1 }, | |
119 | { 2, 1 }, | |
120 | { 5, 1 }, | |
121 | { 10, 1 }, | |
122 | { 20, 1 }, | |
123 | { 50, 1 }, | |
124 | { 100, 1 }, | |
125 | { 200, 1 }, | |
126 | { 500, 1 }, | |
127 | }; | |
128 | ||
129 | static const uint64_t dlm_vdivs[][2] = { | |
130 | /* millivolts */ | |
131 | { 2, 1000 }, | |
132 | { 5, 1000 }, | |
133 | { 10, 1000 }, | |
134 | { 20, 1000 }, | |
135 | { 50, 1000 }, | |
136 | { 100, 1000 }, | |
137 | { 200, 1000 }, | |
138 | { 500, 1000 }, | |
139 | /* volts */ | |
140 | { 1, 1 }, | |
141 | { 2, 1 }, | |
142 | { 5, 1 }, | |
143 | { 10, 1 }, | |
144 | { 20, 1 }, | |
145 | { 50, 1 }, | |
146 | { 100, 1 }, | |
147 | { 200, 1 }, | |
148 | { 500, 1 }, | |
149 | }; | |
150 | ||
151 | static const char *scope_analog_channel_names[] = { | |
152 | "1", | |
153 | "2", | |
154 | "3", | |
155 | "4" | |
156 | }; | |
157 | ||
158 | static const char *scope_digital_channel_names[] = { | |
159 | "D0", | |
160 | "D1", | |
161 | "D2", | |
162 | "D3", | |
163 | "D4", | |
164 | "D5", | |
165 | "D6", | |
166 | "D7" | |
167 | }; | |
168 | ||
169 | static struct scope_config scope_models[] = { | |
170 | { | |
171 | .model_id = {"710105", "710115", "710125", NULL}, | |
172 | .model_name = {"DLM2022", "DLM2032", "DLM2052", NULL}, | |
173 | .analog_channels = 2, | |
174 | .digital_channels = 0, | |
175 | .pods = 0, | |
176 | ||
177 | .analog_names = &scope_analog_channel_names, | |
178 | .digital_names = &scope_digital_channel_names, | |
179 | ||
180 | .hw_caps = &dlm_hwcaps, | |
181 | .num_hwcaps = ARRAY_SIZE(dlm_hwcaps), | |
182 | ||
183 | .analog_hwcaps = &dlm_analog_caps, | |
184 | .num_analog_hwcaps = ARRAY_SIZE(dlm_analog_caps), | |
185 | ||
186 | .coupling_options = &dlm_coupling_options, | |
187 | .trigger_sources = &dlm_2ch_trigger_sources, | |
188 | .trigger_slopes = &dlm_trigger_slopes, | |
189 | ||
190 | .timebases = &dlm_timebases, | |
191 | .num_timebases = ARRAY_SIZE(dlm_timebases), | |
192 | ||
193 | .vdivs = &dlm_vdivs, | |
194 | .num_vdivs = ARRAY_SIZE(dlm_vdivs), | |
195 | ||
196 | .num_xdivs = 10, | |
197 | .num_ydivs = 8, | |
198 | }, | |
199 | { | |
200 | .model_id = {"710110", "710120", "710130", NULL}, | |
201 | .model_name = {"DLM2024", "DLM2034", "DLM2054", NULL}, | |
202 | .analog_channels = 4, | |
203 | .digital_channels = 8, | |
204 | .pods = 1, | |
205 | ||
206 | .analog_names = &scope_analog_channel_names, | |
207 | .digital_names = &scope_digital_channel_names, | |
208 | ||
209 | .hw_caps = &dlm_hwcaps, | |
210 | .num_hwcaps = ARRAY_SIZE(dlm_hwcaps), | |
211 | ||
212 | .analog_hwcaps = &dlm_analog_caps, | |
213 | .num_analog_hwcaps = ARRAY_SIZE(dlm_analog_caps), | |
214 | ||
215 | .coupling_options = &dlm_coupling_options, | |
216 | .trigger_sources = &dlm_4ch_trigger_sources, | |
217 | .trigger_slopes = &dlm_trigger_slopes, | |
218 | ||
219 | .timebases = &dlm_timebases, | |
220 | .num_timebases = ARRAY_SIZE(dlm_timebases), | |
221 | ||
222 | .vdivs = &dlm_vdivs, | |
223 | .num_vdivs = ARRAY_SIZE(dlm_vdivs), | |
224 | ||
225 | .num_xdivs = 10, | |
226 | .num_ydivs = 8, | |
227 | }, | |
228 | }; | |
229 | ||
230 | /** | |
231 | * Prints out the state of the device as we currently know it. | |
232 | * | |
233 | * @param config This is the scope configuration. | |
234 | * @param state The current scope state to print. | |
235 | */ | |
236 | static void scope_state_dump(struct scope_config *config, | |
237 | struct scope_state *state) | |
238 | { | |
239 | unsigned int i; | |
240 | char *tmp; | |
241 | ||
242 | for (i = 0; i < config->analog_channels; ++i) { | |
243 | tmp = sr_voltage_string((*config->vdivs)[state->analog_states[i].vdiv][0], | |
244 | (*config->vdivs)[state->analog_states[i].vdiv][1]); | |
245 | sr_info("State of analog channel %d -> %s : %s (coupling) %s (vdiv) %2.2e (offset)", | |
246 | i + 1, state->analog_states[i].state ? "On" : "Off", | |
247 | (*config->coupling_options)[state->analog_states[i].coupling], | |
248 | tmp, state->analog_states[i].vertical_offset); | |
249 | } | |
250 | ||
251 | for (i = 0; i < config->digital_channels; ++i) { | |
252 | sr_info("State of digital channel %d -> %s", i, | |
253 | state->digital_states[i] ? "On" : "Off"); | |
254 | } | |
255 | ||
256 | for (i = 0; i < config->pods; ++i) { | |
257 | sr_info("State of digital POD %d -> %s", i, | |
258 | state->pod_states[i] ? "On" : "Off"); | |
259 | } | |
260 | ||
261 | tmp = sr_period_string((*config->timebases)[state->timebase][0] * | |
262 | (*config->timebases)[state->timebase][1]); | |
263 | sr_info("Current timebase: %s", tmp); | |
264 | g_free(tmp); | |
265 | ||
266 | tmp = sr_samplerate_string(state->sample_rate); | |
267 | sr_info("Current samplerate: %s", tmp); | |
268 | g_free(tmp); | |
269 | ||
270 | sr_info("Current trigger: %s (source), %s (slope) %.2f (offset)", | |
271 | (*config->trigger_sources)[state->trigger_source], | |
272 | (*config->trigger_slopes)[state->trigger_slope], | |
273 | state->horiz_triggerpos); | |
274 | } | |
275 | ||
276 | /** | |
277 | * Searches through an array of strings and returns the index to the | |
278 | * array where a given string is located. | |
279 | * | |
280 | * @param value The string to search for. | |
281 | * @param array The array of strings. | |
282 | * @param result The index at which value is located in array. -1 on error. | |
283 | * | |
284 | * @return SR_ERR when value couldn't be found, SR_OK otherwise. | |
285 | */ | |
286 | static int array_option_get(char *value, const char *(*array)[], | |
287 | int *result) | |
288 | { | |
289 | unsigned int i; | |
290 | ||
291 | *result = -1; | |
292 | ||
293 | for (i = 0; (*array)[i]; ++i) | |
294 | if (!g_strcmp0(value, (*array)[i])) { | |
295 | *result = i; | |
296 | break; | |
297 | } | |
298 | ||
299 | if (*result == -1) | |
300 | return SR_ERR; | |
301 | ||
302 | return SR_OK; | |
303 | } | |
304 | ||
305 | /** | |
306 | * This function takes a value of the form "2.000E-03", converts it to a | |
307 | * significand / factor pair and returns the index of an array where | |
308 | * a matching pair was found. | |
309 | * | |
310 | * It's a bit convoluted because of floating-point issues. The value "10.00E-09" | |
311 | * is parsed by g_ascii_strtod() as 0.000000009999999939, for example. | |
312 | * Therefore it's easier to break the number up into two strings and handle | |
313 | * them separately. | |
314 | * | |
315 | * @param value The string to be parsed. | |
316 | * @param array The array of s/f pairs. | |
317 | * @param array_len The number of pairs in the array. | |
318 | * @param result The index at which a matching pair was found. | |
319 | * | |
320 | * @return SR_ERR on any parsing error, SR_OK otherwise. | |
321 | */ | |
322 | static int array_float_get(gchar *value, const uint64_t array[][2], | |
323 | int array_len, int *result) | |
324 | { | |
325 | int i; | |
326 | uint64_t f; | |
327 | float s; | |
328 | gchar ss[10], es[10]; | |
329 | ||
330 | memset(ss, 0, sizeof(ss)); | |
331 | memset(es, 0, sizeof(es)); | |
332 | ||
333 | strncpy(ss, value, 5); | |
334 | strncpy(es, &(value[6]), 3); | |
335 | ||
336 | if (sr_atof_ascii(ss, &s) != SR_OK) | |
337 | return SR_ERR; | |
338 | if (sr_atoi(es, &i) != SR_OK) | |
339 | return SR_ERR; | |
340 | ||
341 | /* Transform e.g. 10^-03 to 1000 as the array stores the inverse. */ | |
342 | f = pow(10, abs(i)); | |
343 | ||
344 | /* Adjust the significand/factor pair to make sure | |
345 | * that f is a multiple of 1000. | |
346 | */ | |
347 | while ((int)fmod(log10(f), 3) > 0) { s *= 10; f *= 10; } | |
348 | ||
349 | /* Truncate s to circumvent rounding errors. */ | |
350 | s = (int)s; | |
351 | ||
352 | for (i = 0; i < array_len; i++) { | |
353 | if ( (s == array[i][0]) && (f == array[i][1]) ) { | |
354 | *result = i; | |
355 | return SR_OK; | |
356 | } | |
357 | } | |
358 | ||
359 | return SR_ERR; | |
360 | } | |
361 | ||
362 | /** | |
363 | * Obtains information about all analog channels from the oscilloscope. | |
364 | * The internal state information is updated accordingly. | |
365 | * | |
366 | * @param scpi An open SCPI connection. | |
367 | * @param config The device's device configuration. | |
368 | * @param state The device's state information. | |
369 | * | |
370 | * @return SR_ERR on error, SR_OK otherwise. | |
371 | */ | |
372 | static int analog_channel_state_get(struct sr_scpi_dev_inst *scpi, | |
373 | struct scope_config *config, | |
374 | struct scope_state *state) | |
375 | { | |
376 | int i, j; | |
377 | gchar *response; | |
378 | ||
379 | for (i = 0; i < config->analog_channels; ++i) { | |
380 | ||
381 | if (dlm_analog_chan_state_get(scpi, i + 1, | |
382 | &state->analog_states[i].state) != SR_OK) | |
383 | return SR_ERR; | |
384 | ||
385 | if (dlm_analog_chan_vdiv_get(scpi, i + 1, &response) != SR_OK) | |
386 | return SR_ERR; | |
387 | ||
388 | if (array_float_get(response, *config->vdivs, config->num_vdivs, | |
389 | &j) != SR_OK) { | |
390 | g_free(response); | |
391 | return SR_ERR; | |
392 | } | |
393 | ||
394 | g_free(response); | |
395 | state->analog_states[i].vdiv = j; | |
396 | ||
397 | if (dlm_analog_chan_voffs_get(scpi, i + 1, | |
398 | &state->analog_states[i].vertical_offset) != SR_OK) | |
399 | return SR_ERR; | |
400 | ||
401 | if (dlm_analog_chan_wrange_get(scpi, i + 1, | |
402 | &state->analog_states[i].waveform_range) != SR_OK) | |
403 | return SR_ERR; | |
404 | ||
405 | if (dlm_analog_chan_woffs_get(scpi, i + 1, | |
406 | &state->analog_states[i].waveform_offset) != SR_OK) | |
407 | return SR_ERR; | |
408 | ||
409 | if (dlm_analog_chan_coupl_get(scpi, i + 1, &response) != SR_OK) { | |
410 | g_free(response); | |
411 | return SR_ERR; | |
412 | } | |
413 | ||
414 | if (array_option_get(response, config->coupling_options, | |
415 | &state->analog_states[i].coupling) != SR_OK) { | |
416 | g_free(response); | |
417 | return SR_ERR; | |
418 | } | |
419 | g_free(response); | |
420 | } | |
421 | ||
422 | return SR_OK; | |
423 | } | |
424 | ||
425 | /** | |
426 | * Obtains information about all digital channels from the oscilloscope. | |
427 | * The internal state information is updated accordingly. | |
428 | * | |
429 | * @param scpi An open SCPI connection. | |
430 | * @param config The device's device configuration. | |
431 | * @param state The device's state information. | |
432 | * | |
433 | * @return SR_ERR on error, SR_OK otherwise. | |
434 | */ | |
435 | static int digital_channel_state_get(struct sr_scpi_dev_inst *scpi, | |
436 | struct scope_config *config, | |
437 | struct scope_state *state) | |
438 | { | |
439 | unsigned int i; | |
440 | ||
441 | if (!config->digital_channels) | |
442 | { | |
443 | sr_warn("Tried obtaining digital channel states on a " \ | |
444 | "model without digital inputs."); | |
445 | return SR_OK; | |
446 | } | |
447 | ||
448 | for (i = 0; i < config->digital_channels; ++i) { | |
449 | if (dlm_digital_chan_state_get(scpi, i + 1, | |
450 | &state->digital_states[i]) != SR_OK) { | |
451 | return SR_ERR; | |
452 | } | |
453 | } | |
454 | ||
455 | if (!config->pods) | |
456 | { | |
457 | sr_warn("Tried obtaining pod states on a model without pods."); | |
458 | return SR_OK; | |
459 | } | |
460 | ||
461 | for (i = 0; i < config->pods; ++i) { | |
462 | if (dlm_digital_pod_state_get(scpi, i + 'A', | |
463 | &state->pod_states[i]) != SR_OK) | |
464 | return SR_ERR; | |
465 | } | |
466 | ||
467 | return SR_OK; | |
468 | } | |
469 | ||
470 | /** | |
471 | * Obtains information about the sample rate from the oscilloscope. | |
472 | * The internal state information is updated accordingly. | |
473 | * | |
474 | * @param sdi The device instance. | |
475 | * | |
476 | * @return SR_ERR on error, SR_OK otherwise. | |
477 | */ | |
478 | SR_PRIV int dlm_sample_rate_query(const struct sr_dev_inst *sdi) | |
479 | { | |
480 | struct dev_context *devc; | |
481 | struct scope_state *state; | |
482 | float tmp_float; | |
483 | ||
484 | devc = sdi->priv; | |
485 | state = devc->model_state; | |
486 | ||
487 | /* No need to find an active channel to query the sample rate: | |
488 | * querying any channel will do, so we use channel 1 all the time. | |
489 | */ | |
490 | if (dlm_analog_chan_srate_get(sdi->conn, 1, &tmp_float) != SR_OK) | |
491 | return SR_ERR; | |
492 | ||
493 | state->sample_rate = tmp_float; | |
494 | ||
495 | return SR_OK; | |
496 | } | |
497 | ||
498 | /** | |
499 | * Obtains information about the current device state from the oscilloscope, | |
500 | * including all analog and digital channel configurations. | |
501 | * The internal state information is updated accordingly. | |
502 | * | |
503 | * @param sdi The device instance. | |
504 | * | |
505 | * @return SR_ERR on error, SR_OK otherwise. | |
506 | */ | |
507 | SR_PRIV int dlm_scope_state_query(struct sr_dev_inst *sdi) | |
508 | { | |
509 | struct dev_context *devc; | |
510 | struct scope_state *state; | |
511 | struct scope_config *config; | |
512 | float tmp_float; | |
513 | gchar *response; | |
514 | int i; | |
515 | ||
516 | devc = sdi->priv; | |
517 | config = devc->model_config; | |
518 | state = devc->model_state; | |
519 | ||
520 | if (analog_channel_state_get(sdi->conn, config, state) != SR_OK) | |
521 | return SR_ERR; | |
522 | ||
523 | if (digital_channel_state_get(sdi->conn, config, state) != SR_OK) | |
524 | return SR_ERR; | |
525 | ||
526 | if (dlm_timebase_get(sdi->conn, &response) != SR_OK) | |
527 | return SR_ERR; | |
528 | ||
529 | if (array_float_get(response, *config->timebases, | |
530 | config->num_timebases, &i) != SR_OK) { | |
531 | g_free(response); | |
532 | return SR_ERR; | |
533 | } | |
534 | ||
535 | g_free(response); | |
536 | state->timebase = i; | |
537 | ||
538 | if (dlm_horiz_trigger_pos_get(sdi->conn, &tmp_float) != SR_OK) | |
539 | return SR_ERR; | |
540 | ||
541 | /* TODO: Check if the calculation makes sense for the DLM. */ | |
542 | state->horiz_triggerpos = tmp_float / | |
543 | (((double)(*config->timebases)[state->timebase][0] / | |
544 | (*config->timebases)[state->timebase][1]) * config->num_xdivs); | |
545 | state->horiz_triggerpos -= 0.5; | |
546 | state->horiz_triggerpos *= -1; | |
547 | ||
548 | if (dlm_trigger_source_get(sdi->conn, &response) != SR_OK) { | |
549 | g_free(response); | |
550 | return SR_ERR; | |
551 | } | |
552 | ||
553 | if (array_option_get(response, config->trigger_sources, | |
554 | &state->trigger_source) != SR_OK) { | |
555 | g_free(response); | |
556 | return SR_ERR; | |
557 | } | |
558 | ||
559 | g_free(response); | |
560 | ||
561 | if (dlm_trigger_slope_get(sdi->conn, &i) != SR_OK) | |
562 | return SR_ERR; | |
563 | ||
564 | state->trigger_slope = i; | |
565 | ||
566 | dlm_sample_rate_query(sdi); | |
567 | ||
568 | scope_state_dump(config, state); | |
569 | ||
570 | return SR_OK; | |
571 | } | |
572 | ||
573 | /** | |
574 | * Creates a new device state structure. | |
575 | * | |
576 | * @param config The device configuration to use. | |
577 | * | |
578 | * @return The newly allocated scope_state struct or NULL on error. | |
579 | */ | |
580 | static struct scope_state *dlm_scope_state_new(struct scope_config *config) | |
581 | { | |
582 | struct scope_state *state; | |
583 | ||
584 | if (!(state = g_try_malloc0(sizeof(struct scope_state)))) | |
585 | return NULL; | |
586 | ||
587 | state->analog_states = g_malloc0(config->analog_channels * | |
588 | sizeof(struct analog_channel_state)); | |
589 | ||
590 | state->digital_states = g_malloc0(config->digital_channels * | |
591 | sizeof(gboolean)); | |
592 | ||
593 | state->pod_states = g_malloc0(config->pods * sizeof(gboolean)); | |
594 | ||
595 | return state; | |
596 | } | |
597 | ||
598 | /** | |
599 | * Frees the memory that was allocated by a call to dlm_scope_state_new(). | |
600 | * | |
601 | * @param state The device state structure whose memory is to be freed. | |
602 | */ | |
603 | SR_PRIV void dlm_scope_state_destroy(struct scope_state *state) | |
604 | { | |
605 | g_free(state->analog_states); | |
606 | g_free(state->digital_states); | |
607 | g_free(state->pod_states); | |
608 | g_free(state); | |
609 | } | |
610 | ||
611 | SR_PRIV int dlm_model_get(char *model_id, char **model_name, int *model_index) | |
612 | { | |
613 | unsigned int i, j; | |
614 | ||
615 | *model_index = -1; | |
616 | *model_name = NULL; | |
617 | ||
618 | for (i = 0; i < ARRAY_SIZE(scope_models); i++) { | |
619 | for (j = 0; scope_models[i].model_id[j]; j++) { | |
620 | if (!strcmp(model_id, scope_models[i].model_id[j])) { | |
621 | *model_index = i; | |
622 | *model_name = (char *)scope_models[i].model_name[j]; | |
623 | break; | |
624 | } | |
625 | } | |
626 | if (*model_index != -1) | |
627 | break; | |
628 | } | |
629 | ||
630 | if (*model_index == -1) { | |
631 | sr_err("Found unsupported DLM device with model identifier %s.", | |
632 | model_id); | |
633 | return SR_ERR_NA; | |
634 | } | |
635 | ||
636 | return SR_OK; | |
637 | } | |
638 | ||
639 | /** | |
640 | * Attempts to initialize a DL/DLM device and prepares internal structures | |
641 | * if a suitable device was found. | |
642 | * | |
643 | * @param sdi The device instance. | |
644 | */ | |
645 | SR_PRIV int dlm_device_init(struct sr_dev_inst *sdi, int model_index) | |
646 | { | |
647 | char tmp[25]; | |
648 | int i; | |
649 | struct sr_channel *ch; | |
650 | struct dev_context *devc; | |
651 | ||
652 | devc = sdi->priv; | |
653 | ||
654 | devc->analog_groups = g_malloc0(sizeof(struct sr_channel_group*) * | |
655 | scope_models[model_index].analog_channels); | |
656 | ||
657 | devc->digital_groups = g_malloc0(sizeof(struct sr_channel_group*) * | |
658 | scope_models[model_index].digital_channels); | |
659 | ||
660 | /* Add analog channels. */ | |
661 | for (i = 0; i < scope_models[model_index].analog_channels; i++) { | |
662 | if (!(ch = sr_channel_new(i, SR_CHANNEL_ANALOG, TRUE, | |
663 | (*scope_models[model_index].analog_names)[i]))) | |
664 | return SR_ERR_MALLOC; | |
665 | sdi->channels = g_slist_append(sdi->channels, ch); | |
666 | ||
667 | devc->analog_groups[i] = g_malloc0(sizeof(struct sr_channel_group)); | |
668 | ||
669 | devc->analog_groups[i]->name = g_strdup( | |
670 | (char *)(*scope_models[model_index].analog_names)[i]); | |
671 | devc->analog_groups[i]->channels = g_slist_append(NULL, ch); | |
672 | ||
673 | sdi->channel_groups = g_slist_append(sdi->channel_groups, | |
674 | devc->analog_groups[i]); | |
675 | } | |
676 | ||
677 | /* Add digital channel groups. */ | |
678 | for (i = 0; i < scope_models[model_index].pods; ++i) { | |
679 | g_snprintf(tmp, sizeof(tmp), "POD%d", i); | |
680 | ||
681 | devc->digital_groups[i] = g_malloc0(sizeof(struct sr_channel_group)); | |
682 | if (!devc->digital_groups[i]) | |
683 | return SR_ERR_MALLOC; | |
684 | ||
685 | devc->digital_groups[i]->name = g_strdup(tmp); | |
686 | sdi->channel_groups = g_slist_append(sdi->channel_groups, | |
687 | devc->digital_groups[i]); | |
688 | } | |
689 | ||
690 | /* Add digital channels. */ | |
691 | for (i = 0; i < scope_models[model_index].digital_channels; i++) { | |
692 | if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, | |
693 | (*scope_models[model_index].digital_names)[i]))) | |
694 | return SR_ERR_MALLOC; | |
695 | sdi->channels = g_slist_append(sdi->channels, ch); | |
696 | ||
697 | devc->digital_groups[i / 8]->channels = g_slist_append( | |
698 | devc->digital_groups[i / 8]->channels, ch); | |
699 | } | |
700 | devc->model_config = &scope_models[model_index]; | |
701 | devc->frame_limit = 0; | |
702 | ||
703 | if (!(devc->model_state = dlm_scope_state_new(devc->model_config))) | |
704 | return SR_ERR_MALLOC; | |
705 | ||
706 | /* Disable non-standard response behavior. */ | |
707 | if (dlm_response_headers_set(sdi->conn, FALSE) != SR_OK) | |
708 | return SR_ERR; | |
709 | ||
710 | return SR_OK; | |
711 | } | |
712 | ||
713 | /** | |
714 | * Send an SCPI command, read the reply and store the result in scpi_response | |
715 | * without performing any processing on it. | |
716 | * | |
717 | * @param scpi Previously initialised SCPI device structure. | |
718 | * @param command The SCPI command to send to the device (can be NULL). | |
719 | * @param scpi_response Pointer where to store the parsed result. | |
720 | * | |
721 | * @return SR_OK on success, SR_ERR on failure. | |
722 | */ | |
723 | static int dlm_scpi_get_raw(struct sr_scpi_dev_inst *scpi, | |
724 | const char *command, GArray **scpi_response) | |
725 | { | |
726 | char buf[256]; | |
727 | int len; | |
728 | ||
729 | if (command) | |
730 | if (sr_scpi_send(scpi, command) != SR_OK) | |
731 | return SR_ERR; | |
732 | ||
733 | if (sr_scpi_read_begin(scpi) != SR_OK) | |
734 | return SR_ERR; | |
735 | ||
736 | *scpi_response = g_array_new(FALSE, FALSE, sizeof(uint8_t)); | |
737 | ||
738 | while (!sr_scpi_read_complete(scpi)) { | |
739 | len = sr_scpi_read_data(scpi, buf, sizeof(buf)); | |
740 | if (len < 0) { | |
741 | g_array_free(*scpi_response, TRUE); | |
742 | *scpi_response = NULL; | |
743 | return SR_ERR; | |
744 | } | |
745 | g_array_append_vals(*scpi_response, buf, len); | |
746 | } | |
747 | ||
748 | return SR_OK; | |
749 | } | |
750 | ||
751 | /** | |
752 | * Reads and removes the block data header from a given data input. | |
753 | * Format is #ndddd... with n being the number of decimal digits d. | |
754 | * The string dddd... contains the decimal-encoded length of the data. | |
755 | * Example: #9000000013 would yield a length of 13 bytes. | |
756 | * | |
757 | * @param data The input data. | |
758 | * @param len The determined input data length. | |
759 | */ | |
760 | static int dlm_block_data_header_process(GArray *data, int *len) | |
761 | { | |
762 | int i, n; | |
763 | gchar s[20]; | |
764 | ||
765 | if (g_array_index(data, gchar, 0) != '#') | |
766 | return SR_ERR; | |
767 | ||
768 | n = (uint8_t)(g_array_index(data, gchar, 1) - '0'); | |
769 | ||
770 | for (i = 0; i < n; i++) | |
771 | s[i] = g_array_index(data, gchar, 2 + i); | |
772 | s[i] = 0; | |
773 | ||
774 | if (sr_atoi(s, len) != SR_OK) | |
775 | return SR_ERR; | |
776 | ||
777 | g_array_remove_range(data, 0, 2 + n); | |
778 | ||
779 | return SR_OK; | |
780 | } | |
781 | ||
782 | /** | |
783 | * Turns raw sample data into voltages and sends them off to the session bus. | |
784 | * | |
785 | * @param data The raw sample data. | |
786 | * @samples Number of samples that were acquired. | |
787 | * @ch_state Pointer to the state of the channel whose data we're processing. | |
788 | * @sdi The device instance. | |
789 | * | |
790 | * @return SR_ERR when data is trucated, SR_OK otherwise. | |
791 | */ | |
792 | static int dlm_analog_samples_send(GArray *data, int samples, | |
793 | struct analog_channel_state *ch_state, | |
794 | struct sr_dev_inst *sdi) | |
795 | { | |
796 | int i; | |
797 | float voltage, range, offset; | |
798 | GArray *float_data; | |
799 | struct dev_context *devc; | |
800 | struct sr_channel *ch; | |
801 | struct sr_datafeed_analog analog; | |
802 | struct sr_datafeed_packet packet; | |
803 | ||
804 | if (data->len < samples * sizeof(uint8_t)) { | |
805 | sr_err("Truncated waveform data packet received."); | |
806 | return SR_ERR; | |
807 | } | |
808 | ||
809 | devc = sdi->priv; | |
810 | ch = devc->current_channel->data; | |
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 | * @samples Number of samples that were acquired. | |
848 | * @ch_state Pointer to the state of the channel whose data we're processing. | |
849 | * @sdi The device instance. | |
850 | * | |
851 | * @return SR_ERR when data is trucated, SR_OK otherwise. | |
852 | */ | |
853 | static int dlm_digital_samples_send(GArray *data, int samples, | |
854 | struct sr_dev_inst *sdi) | |
855 | { | |
856 | struct sr_datafeed_logic logic; | |
857 | struct sr_datafeed_packet packet; | |
858 | ||
859 | if (data->len < samples * sizeof(uint8_t)) { | |
860 | sr_err("Truncated waveform data packet received."); | |
861 | return SR_ERR; | |
862 | } | |
863 | ||
864 | logic.length = samples; | |
865 | logic.unitsize = 1; | |
866 | logic.data = data->data; | |
867 | packet.type = SR_DF_LOGIC; | |
868 | packet.payload = &logic; | |
869 | sr_session_send(sdi, &packet); | |
870 | ||
871 | g_array_remove_range(data, 0, samples * sizeof(uint8_t)); | |
872 | ||
873 | return SR_OK; | |
874 | } | |
875 | ||
876 | /** | |
877 | * Attempts to query sample data from the oscilloscope in order to send it | |
878 | * to the session bus for further processing. | |
879 | * | |
880 | * @param fd The file descriptor used as the event source. | |
881 | * @param revents The received events. | |
882 | * @param cb_data Callback data, in this case our device instance. | |
883 | * | |
884 | * @return TRUE in case of success or a recoverable error, | |
885 | * FALSE when a fatal error was encountered. | |
886 | */ | |
887 | SR_PRIV int dlm_data_receive(int fd, int revents, void *cb_data) | |
888 | { | |
889 | struct sr_channel *ch; | |
890 | struct sr_dev_inst *sdi; | |
891 | struct scope_state *model_state; | |
892 | struct dev_context *devc; | |
893 | struct sr_datafeed_packet packet; | |
894 | GArray *data; | |
895 | int result, num_bytes, samples; | |
896 | ||
897 | (void)fd; | |
898 | (void)revents; | |
899 | ||
900 | if (!(sdi = cb_data)) | |
901 | return FALSE; | |
902 | ||
903 | if (!(devc = sdi->priv)) | |
904 | return FALSE; | |
905 | ||
906 | if (!(model_state = (struct scope_state*)devc->model_state)) | |
907 | return FALSE; | |
908 | ||
909 | if (dlm_acq_length_get(sdi->conn, &samples) != SR_OK) { | |
910 | sr_err("Failed to query acquisition length."); | |
911 | return TRUE; | |
912 | } | |
913 | ||
914 | packet.type = SR_DF_FRAME_BEGIN; | |
915 | sr_session_send(sdi, &packet); | |
916 | ||
917 | /* Request data for all active channels. */ | |
918 | for (devc->current_channel = devc->enabled_channels; | |
919 | devc->current_channel; | |
920 | devc->current_channel = devc->current_channel->next) { | |
921 | ch = devc->current_channel->data; | |
922 | ||
923 | switch (ch->type) { | |
924 | case SR_CHANNEL_ANALOG: | |
925 | result = dlm_analog_data_get(sdi->conn, ch->index + 1); | |
926 | break; | |
927 | case SR_CHANNEL_LOGIC: | |
928 | result = dlm_digital_data_get(sdi->conn); | |
929 | break; | |
930 | default: | |
931 | sr_err("Invalid channel type encountered (%d).", | |
932 | ch->type); | |
933 | continue; | |
934 | } | |
935 | ||
936 | if (result != SR_OK) { | |
937 | sr_err("Failed to query aquisition data."); | |
938 | goto fail; | |
939 | } | |
940 | ||
941 | data = NULL; | |
942 | if (dlm_scpi_get_raw(sdi->conn, NULL, &data) != SR_OK) { | |
943 | sr_err("Failed to receive waveform data from device."); | |
944 | goto fail; | |
945 | } | |
946 | ||
947 | if (dlm_block_data_header_process(data, &num_bytes) != SR_OK) { | |
948 | sr_err("Encountered malformed block data header."); | |
949 | goto fail; | |
950 | } | |
951 | ||
952 | if (num_bytes == 0) { | |
953 | sr_warn("Zero-length waveform data packet received. " \ | |
954 | "Live mode not supported yet, stopping " \ | |
955 | "acquisition and retrying."); | |
956 | /* Don't care about return value here. */ | |
957 | dlm_acquisition_stop(sdi->conn); | |
958 | goto fail; | |
959 | } | |
960 | ||
961 | switch (ch->type) { | |
962 | case SR_CHANNEL_ANALOG: | |
963 | if (dlm_analog_samples_send(data, samples, | |
964 | &model_state->analog_states[ch->index], | |
965 | sdi) != SR_OK) | |
966 | goto fail; | |
967 | break; | |
968 | ||
969 | case SR_CHANNEL_LOGIC: | |
970 | if (dlm_digital_samples_send(data, samples, | |
971 | sdi) != SR_OK) | |
972 | goto fail; | |
973 | break; | |
974 | ||
975 | default: | |
976 | sr_err("Invalid channel type encountered."); | |
977 | break; | |
978 | } | |
979 | ||
980 | g_array_free(data, TRUE); | |
981 | } | |
982 | ||
983 | packet.type = SR_DF_FRAME_END; | |
984 | sr_session_send(sdi, &packet); | |
985 | ||
986 | sdi->driver->dev_acquisition_stop(sdi, cb_data); | |
987 | ||
988 | return TRUE; | |
989 | ||
990 | fail: | |
991 | if (data) | |
992 | g_array_free(data, TRUE); | |
993 | ||
994 | return TRUE; | |
995 | } |