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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 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 samples per acquisition (i.e. frame): %d", | |
271 | state->samples_per_frame); | |
272 | ||
273 | sr_info("Current trigger: %s (source), %s (slope) %.2f (offset)", | |
274 | (*config->trigger_sources)[state->trigger_source], | |
275 | (*config->trigger_slopes)[state->trigger_slope], | |
276 | state->horiz_triggerpos); | |
277 | } | |
278 | ||
279 | /** | |
280 | * Searches through an array of strings and returns the index to the | |
281 | * array where a given string is located. | |
282 | * | |
283 | * @param value The string to search for. | |
284 | * @param array The array of strings. | |
285 | * @param result The index at which value is located in array. -1 on error. | |
286 | * | |
287 | * @return SR_ERR when value couldn't be found, SR_OK otherwise. | |
288 | */ | |
289 | static int array_option_get(char *value, const char *(*array)[], | |
290 | int *result) | |
291 | { | |
292 | unsigned int i; | |
293 | ||
294 | *result = -1; | |
295 | ||
296 | for (i = 0; (*array)[i]; ++i) | |
297 | if (!g_strcmp0(value, (*array)[i])) { | |
298 | *result = i; | |
299 | break; | |
300 | } | |
301 | ||
302 | if (*result == -1) | |
303 | return SR_ERR; | |
304 | ||
305 | return SR_OK; | |
306 | } | |
307 | ||
308 | /** | |
309 | * This function takes a value of the form "2.000E-03", converts it to a | |
310 | * significand / factor pair and returns the index of an array where | |
311 | * a matching pair was found. | |
312 | * | |
313 | * It's a bit convoluted because of floating-point issues. The value "10.00E-09" | |
314 | * is parsed by g_ascii_strtod() as 0.000000009999999939, for example. | |
315 | * Therefore it's easier to break the number up into two strings and handle | |
316 | * them separately. | |
317 | * | |
318 | * @param value The string to be parsed. | |
319 | * @param array The array of s/f pairs. | |
320 | * @param array_len The number of pairs in the array. | |
321 | * @param result The index at which a matching pair was found. | |
322 | * | |
323 | * @return SR_ERR on any parsing error, SR_OK otherwise. | |
324 | */ | |
325 | static int array_float_get(gchar *value, const uint64_t array[][2], | |
326 | int array_len, int *result) | |
327 | { | |
328 | int i; | |
329 | uint64_t f; | |
330 | float s; | |
331 | unsigned int s_int; | |
332 | gchar ss[10], es[10]; | |
333 | ||
334 | memset(ss, 0, sizeof(ss)); | |
335 | memset(es, 0, sizeof(es)); | |
336 | ||
337 | strncpy(ss, value, 5); | |
338 | strncpy(es, &(value[6]), 3); | |
339 | ||
340 | if (sr_atof_ascii(ss, &s) != SR_OK) | |
341 | return SR_ERR; | |
342 | if (sr_atoi(es, &i) != SR_OK) | |
343 | return SR_ERR; | |
344 | ||
345 | /* Transform e.g. 10^-03 to 1000 as the array stores the inverse. */ | |
346 | f = pow(10, abs(i)); | |
347 | ||
348 | /* Adjust the significand/factor pair to make sure | |
349 | * that f is a multiple of 1000. | |
350 | */ | |
351 | while ((int)fmod(log10(f), 3) > 0) { s *= 10; f *= 10; } | |
352 | ||
353 | /* Truncate s to circumvent rounding errors. */ | |
354 | s_int = (unsigned int)s; | |
355 | ||
356 | for (i = 0; i < array_len; i++) { | |
357 | if ( (s_int == array[i][0]) && (f == array[i][1]) ) { | |
358 | *result = i; | |
359 | return SR_OK; | |
360 | } | |
361 | } | |
362 | ||
363 | return SR_ERR; | |
364 | } | |
365 | ||
366 | /** | |
367 | * Obtains information about all analog channels from the oscilloscope. | |
368 | * The internal state information is updated accordingly. | |
369 | * | |
370 | * @param scpi An open SCPI connection. | |
371 | * @param config The device's device configuration. | |
372 | * @param state The device's state information. | |
373 | * | |
374 | * @return SR_ERR on error, SR_OK otherwise. | |
375 | */ | |
376 | static int analog_channel_state_get(struct sr_scpi_dev_inst *scpi, | |
377 | struct scope_config *config, | |
378 | struct scope_state *state) | |
379 | { | |
380 | int i, j; | |
381 | gchar *response; | |
382 | ||
383 | for (i = 0; i < config->analog_channels; ++i) { | |
384 | ||
385 | if (dlm_analog_chan_state_get(scpi, i + 1, | |
386 | &state->analog_states[i].state) != SR_OK) | |
387 | return SR_ERR; | |
388 | ||
389 | if (dlm_analog_chan_vdiv_get(scpi, i + 1, &response) != SR_OK) | |
390 | return SR_ERR; | |
391 | ||
392 | if (array_float_get(response, *config->vdivs, config->num_vdivs, | |
393 | &j) != SR_OK) { | |
394 | g_free(response); | |
395 | return SR_ERR; | |
396 | } | |
397 | ||
398 | g_free(response); | |
399 | state->analog_states[i].vdiv = j; | |
400 | ||
401 | if (dlm_analog_chan_voffs_get(scpi, i + 1, | |
402 | &state->analog_states[i].vertical_offset) != SR_OK) | |
403 | return SR_ERR; | |
404 | ||
405 | if (dlm_analog_chan_wrange_get(scpi, i + 1, | |
406 | &state->analog_states[i].waveform_range) != SR_OK) | |
407 | return SR_ERR; | |
408 | ||
409 | if (dlm_analog_chan_woffs_get(scpi, i + 1, | |
410 | &state->analog_states[i].waveform_offset) != SR_OK) | |
411 | return SR_ERR; | |
412 | ||
413 | if (dlm_analog_chan_coupl_get(scpi, i + 1, &response) != SR_OK) { | |
414 | g_free(response); | |
415 | return SR_ERR; | |
416 | } | |
417 | ||
418 | if (array_option_get(response, config->coupling_options, | |
419 | &state->analog_states[i].coupling) != SR_OK) { | |
420 | g_free(response); | |
421 | return SR_ERR; | |
422 | } | |
423 | g_free(response); | |
424 | } | |
425 | ||
426 | return SR_OK; | |
427 | } | |
428 | ||
429 | /** | |
430 | * Obtains information about all digital channels from the oscilloscope. | |
431 | * The internal state information is updated accordingly. | |
432 | * | |
433 | * @param scpi An open SCPI connection. | |
434 | * @param config The device's device configuration. | |
435 | * @param state The device's state information. | |
436 | * | |
437 | * @return SR_ERR on error, SR_OK otherwise. | |
438 | */ | |
439 | static int digital_channel_state_get(struct sr_scpi_dev_inst *scpi, | |
440 | struct scope_config *config, | |
441 | struct scope_state *state) | |
442 | { | |
443 | unsigned int i; | |
444 | ||
445 | if (!config->digital_channels) | |
446 | { | |
447 | sr_warn("Tried obtaining digital channel states on a " \ | |
448 | "model without digital inputs."); | |
449 | return SR_OK; | |
450 | } | |
451 | ||
452 | for (i = 0; i < config->digital_channels; ++i) { | |
453 | if (dlm_digital_chan_state_get(scpi, i + 1, | |
454 | &state->digital_states[i]) != SR_OK) { | |
455 | return SR_ERR; | |
456 | } | |
457 | } | |
458 | ||
459 | if (!config->pods) | |
460 | { | |
461 | sr_warn("Tried obtaining pod states on a model without pods."); | |
462 | return SR_OK; | |
463 | } | |
464 | ||
465 | for (i = 0; i < config->pods; ++i) { | |
466 | if (dlm_digital_pod_state_get(scpi, i + 'A', | |
467 | &state->pod_states[i]) != SR_OK) | |
468 | return SR_ERR; | |
469 | } | |
470 | ||
471 | return SR_OK; | |
472 | } | |
473 | ||
474 | /** | |
475 | * Obtains information about the sample rate from the oscilloscope. | |
476 | * The internal state information is updated accordingly. | |
477 | * | |
478 | * @param sdi The device instance. | |
479 | * | |
480 | * @return SR_ERR on error, SR_OK otherwise. | |
481 | */ | |
482 | SR_PRIV int dlm_sample_rate_query(const struct sr_dev_inst *sdi) | |
483 | { | |
484 | struct dev_context *devc; | |
485 | struct scope_state *state; | |
486 | float tmp_float; | |
487 | ||
488 | devc = sdi->priv; | |
489 | state = devc->model_state; | |
490 | ||
491 | /* No need to find an active channel to query the sample rate: | |
492 | * querying any channel will do, so we use channel 1 all the time. | |
493 | */ | |
494 | if (dlm_analog_chan_srate_get(sdi->conn, 1, &tmp_float) != SR_OK) | |
495 | return SR_ERR; | |
496 | ||
497 | state->sample_rate = tmp_float; | |
498 | ||
499 | return SR_OK; | |
500 | } | |
501 | ||
502 | /** | |
503 | * Obtains information about the current device state from the oscilloscope, | |
504 | * including all analog and digital channel configurations. | |
505 | * The internal state information is updated accordingly. | |
506 | * | |
507 | * @param sdi The device instance. | |
508 | * | |
509 | * @return SR_ERR on error, SR_OK otherwise. | |
510 | */ | |
511 | SR_PRIV int dlm_scope_state_query(struct sr_dev_inst *sdi) | |
512 | { | |
513 | struct dev_context *devc; | |
514 | struct scope_state *state; | |
515 | struct scope_config *config; | |
516 | float tmp_float; | |
517 | gchar *response; | |
518 | int i; | |
519 | ||
520 | devc = sdi->priv; | |
521 | config = devc->model_config; | |
522 | state = devc->model_state; | |
523 | ||
524 | if (analog_channel_state_get(sdi->conn, config, state) != SR_OK) | |
525 | return SR_ERR; | |
526 | ||
527 | if (digital_channel_state_get(sdi->conn, config, state) != SR_OK) | |
528 | return SR_ERR; | |
529 | ||
530 | if (dlm_timebase_get(sdi->conn, &response) != SR_OK) | |
531 | return SR_ERR; | |
532 | ||
533 | if (array_float_get(response, *config->timebases, | |
534 | config->num_timebases, &i) != SR_OK) { | |
535 | g_free(response); | |
536 | return SR_ERR; | |
537 | } | |
538 | ||
539 | g_free(response); | |
540 | state->timebase = i; | |
541 | ||
542 | if (dlm_horiz_trigger_pos_get(sdi->conn, &tmp_float) != SR_OK) | |
543 | return SR_ERR; | |
544 | ||
545 | /* TODO: Check if the calculation makes sense for the DLM. */ | |
546 | state->horiz_triggerpos = tmp_float / | |
547 | (((double)(*config->timebases)[state->timebase][0] / | |
548 | (*config->timebases)[state->timebase][1]) * config->num_xdivs); | |
549 | state->horiz_triggerpos -= 0.5; | |
550 | state->horiz_triggerpos *= -1; | |
551 | ||
552 | if (dlm_trigger_source_get(sdi->conn, &response) != SR_OK) { | |
553 | g_free(response); | |
554 | return SR_ERR; | |
555 | } | |
556 | ||
557 | if (array_option_get(response, config->trigger_sources, | |
558 | &state->trigger_source) != SR_OK) { | |
559 | g_free(response); | |
560 | return SR_ERR; | |
561 | } | |
562 | ||
563 | g_free(response); | |
564 | ||
565 | if (dlm_trigger_slope_get(sdi->conn, &i) != SR_OK) | |
566 | return SR_ERR; | |
567 | ||
568 | state->trigger_slope = i; | |
569 | ||
570 | if (dlm_acq_length_get(sdi->conn, &state->samples_per_frame) != SR_OK) { | |
571 | sr_err("Failed to query acquisition length."); | |
572 | return SR_ERR; | |
573 | } | |
574 | ||
575 | dlm_sample_rate_query(sdi); | |
576 | ||
577 | scope_state_dump(config, state); | |
578 | ||
579 | return SR_OK; | |
580 | } | |
581 | ||
582 | /** | |
583 | * Creates a new device state structure. | |
584 | * | |
585 | * @param config The device configuration to use. | |
586 | * | |
587 | * @return The newly allocated scope_state struct. | |
588 | */ | |
589 | static struct scope_state *dlm_scope_state_new(struct scope_config *config) | |
590 | { | |
591 | struct scope_state *state; | |
592 | ||
593 | state = g_malloc0(sizeof(struct scope_state)); | |
594 | ||
595 | state->analog_states = g_malloc0(config->analog_channels * | |
596 | sizeof(struct analog_channel_state)); | |
597 | ||
598 | state->digital_states = g_malloc0(config->digital_channels * | |
599 | sizeof(gboolean)); | |
600 | ||
601 | state->pod_states = g_malloc0(config->pods * sizeof(gboolean)); | |
602 | ||
603 | return state; | |
604 | } | |
605 | ||
606 | /** | |
607 | * Frees the memory that was allocated by a call to dlm_scope_state_new(). | |
608 | * | |
609 | * @param state The device state structure whose memory is to be freed. | |
610 | */ | |
611 | SR_PRIV void dlm_scope_state_destroy(struct scope_state *state) | |
612 | { | |
613 | g_free(state->analog_states); | |
614 | g_free(state->digital_states); | |
615 | g_free(state->pod_states); | |
616 | g_free(state); | |
617 | } | |
618 | ||
619 | SR_PRIV int dlm_model_get(char *model_id, char **model_name, int *model_index) | |
620 | { | |
621 | unsigned int i, j; | |
622 | ||
623 | *model_index = -1; | |
624 | *model_name = NULL; | |
625 | ||
626 | for (i = 0; i < ARRAY_SIZE(scope_models); i++) { | |
627 | for (j = 0; scope_models[i].model_id[j]; j++) { | |
628 | if (!strcmp(model_id, scope_models[i].model_id[j])) { | |
629 | *model_index = i; | |
630 | *model_name = (char *)scope_models[i].model_name[j]; | |
631 | break; | |
632 | } | |
633 | } | |
634 | if (*model_index != -1) | |
635 | break; | |
636 | } | |
637 | ||
638 | if (*model_index == -1) { | |
639 | sr_err("Found unsupported DLM device with model identifier %s.", | |
640 | model_id); | |
641 | return SR_ERR_NA; | |
642 | } | |
643 | ||
644 | return SR_OK; | |
645 | } | |
646 | ||
647 | /** | |
648 | * Attempts to initialize a DL/DLM device and prepares internal structures | |
649 | * if a suitable device was found. | |
650 | * | |
651 | * @param sdi The device instance. | |
652 | */ | |
653 | SR_PRIV int dlm_device_init(struct sr_dev_inst *sdi, int model_index) | |
654 | { | |
655 | char tmp[25]; | |
656 | int i; | |
657 | struct sr_channel *ch; | |
658 | struct dev_context *devc; | |
659 | ||
660 | devc = sdi->priv; | |
661 | ||
662 | devc->analog_groups = g_malloc0(sizeof(struct sr_channel_group*) * | |
663 | scope_models[model_index].analog_channels); | |
664 | ||
665 | devc->digital_groups = g_malloc0(sizeof(struct sr_channel_group*) * | |
666 | scope_models[model_index].digital_channels); | |
667 | ||
668 | /* Add analog channels. */ | |
669 | for (i = 0; i < scope_models[model_index].analog_channels; i++) { | |
670 | if (!(ch = sr_channel_new(i, SR_CHANNEL_ANALOG, TRUE, | |
671 | (*scope_models[model_index].analog_names)[i]))) | |
672 | return SR_ERR_MALLOC; | |
673 | sdi->channels = g_slist_append(sdi->channels, ch); | |
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 | if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, | |
701 | (*scope_models[model_index].digital_names)[i]))) | |
702 | return SR_ERR_MALLOC; | |
703 | sdi->channels = g_slist_append(sdi->channels, ch); | |
704 | ||
705 | devc->digital_groups[i / 8]->channels = g_slist_append( | |
706 | devc->digital_groups[i / 8]->channels, ch); | |
707 | } | |
708 | devc->model_config = &scope_models[model_index]; | |
709 | devc->frame_limit = 0; | |
710 | ||
711 | if (!(devc->model_state = dlm_scope_state_new(devc->model_config))) | |
712 | return SR_ERR_MALLOC; | |
713 | ||
714 | /* Disable non-standard response behavior. */ | |
715 | if (dlm_response_headers_set(sdi->conn, FALSE) != SR_OK) | |
716 | return SR_ERR; | |
717 | ||
718 | return SR_OK; | |
719 | } | |
720 | ||
721 | SR_PRIV int dlm_channel_data_request(const struct sr_dev_inst *sdi) | |
722 | { | |
723 | struct dev_context *devc; | |
724 | struct sr_channel *ch; | |
725 | int result; | |
726 | ||
727 | devc = sdi->priv; | |
728 | ch = devc->current_channel->data; | |
729 | ||
730 | switch (ch->type) { | |
731 | case SR_CHANNEL_ANALOG: | |
732 | result = dlm_analog_data_get(sdi->conn, ch->index + 1); | |
733 | break; | |
734 | case SR_CHANNEL_LOGIC: | |
735 | result = dlm_digital_data_get(sdi->conn); | |
736 | break; | |
737 | default: | |
738 | sr_err("Invalid channel type encountered (%d).", | |
739 | ch->type); | |
740 | result = SR_ERR; | |
741 | } | |
742 | ||
743 | if (result == SR_OK) | |
744 | devc->data_pending = TRUE; | |
745 | else | |
746 | devc->data_pending = FALSE; | |
747 | ||
748 | return result; | |
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 | * @ch_state Pointer to the state of the channel whose data we're processing. | |
787 | * @sdi The device instance. | |
788 | * | |
789 | * @return SR_ERR when data is trucated, SR_OK otherwise. | |
790 | */ | |
791 | static int dlm_analog_samples_send(GArray *data, | |
792 | struct analog_channel_state *ch_state, | |
793 | struct sr_dev_inst *sdi) | |
794 | { | |
795 | uint32_t i, samples; | |
796 | float voltage, range, offset; | |
797 | GArray *float_data; | |
798 | struct dev_context *devc; | |
799 | struct scope_state *model_state; | |
800 | struct sr_channel *ch; | |
801 | struct sr_datafeed_analog analog; | |
802 | struct sr_datafeed_packet packet; | |
803 | ||
804 | devc = sdi->priv; | |
805 | model_state = devc->model_state; | |
806 | samples = model_state->samples_per_frame; | |
807 | ch = devc->current_channel->data; | |
808 | ||
809 | if (data->len < samples * sizeof(uint8_t)) { | |
810 | sr_err("Truncated waveform data packet received."); | |
811 | return SR_ERR; | |
812 | } | |
813 | ||
814 | range = ch_state->waveform_range; | |
815 | offset = ch_state->waveform_offset; | |
816 | ||
817 | /* Convert byte sample to voltage according to | |
818 | * page 269 of the Communication Interface User's Manual. | |
819 | */ | |
820 | float_data = g_array_new(FALSE, FALSE, sizeof(float)); | |
821 | for (i = 0; i < samples; i++) { | |
822 | voltage = (float)g_array_index(data, int8_t, i); | |
823 | voltage = (range * voltage / | |
824 | DLM_DIVISION_FOR_BYTE_FORMAT) + offset; | |
825 | g_array_append_val(float_data, voltage); | |
826 | } | |
827 | ||
828 | analog.channels = g_slist_append(NULL, ch); | |
829 | analog.num_samples = float_data->len; | |
830 | analog.data = (float*)float_data->data; | |
831 | analog.mq = SR_MQ_VOLTAGE; | |
832 | analog.unit = SR_UNIT_VOLT; | |
833 | analog.mqflags = 0; | |
834 | packet.type = SR_DF_ANALOG; | |
835 | packet.payload = &analog; | |
836 | sr_session_send(sdi, &packet); | |
837 | g_slist_free(analog.channels); | |
838 | ||
839 | g_array_free(float_data, TRUE); | |
840 | g_array_remove_range(data, 0, samples * sizeof(uint8_t)); | |
841 | ||
842 | return SR_OK; | |
843 | } | |
844 | ||
845 | /** | |
846 | * Sends logic sample data off to the session bus. | |
847 | * | |
848 | * @param data The raw sample data. | |
849 | * @ch_state Pointer to the state of the channel whose data we're processing. | |
850 | * @sdi The device instance. | |
851 | * | |
852 | * @return SR_ERR when data is trucated, SR_OK otherwise. | |
853 | */ | |
854 | static int dlm_digital_samples_send(GArray *data, | |
855 | struct sr_dev_inst *sdi) | |
856 | { | |
857 | struct dev_context *devc; | |
858 | struct scope_state *model_state; | |
859 | uint32_t samples; | |
860 | struct sr_datafeed_logic logic; | |
861 | struct sr_datafeed_packet packet; | |
862 | ||
863 | devc = sdi->priv; | |
864 | model_state = devc->model_state; | |
865 | samples = model_state->samples_per_frame; | |
866 | ||
867 | if (data->len < samples * sizeof(uint8_t)) { | |
868 | sr_err("Truncated waveform data packet received."); | |
869 | return SR_ERR; | |
870 | } | |
871 | ||
872 | logic.length = samples; | |
873 | logic.unitsize = 1; | |
874 | logic.data = data->data; | |
875 | packet.type = SR_DF_LOGIC; | |
876 | packet.payload = &logic; | |
877 | sr_session_send(sdi, &packet); | |
878 | ||
879 | g_array_remove_range(data, 0, samples * sizeof(uint8_t)); | |
880 | ||
881 | return SR_OK; | |
882 | } | |
883 | ||
884 | /** | |
885 | * Attempts to query sample data from the oscilloscope in order to send it | |
886 | * to the session bus for further processing. | |
887 | * | |
888 | * @param fd The file descriptor used as the event source. | |
889 | * @param revents The received events. | |
890 | * @param cb_data Callback data, in this case our device instance. | |
891 | * | |
892 | * @return TRUE in case of success or a recoverable error, | |
893 | * FALSE when a fatal error was encountered. | |
894 | */ | |
895 | SR_PRIV int dlm_data_receive(int fd, int revents, void *cb_data) | |
896 | { | |
897 | struct sr_dev_inst *sdi; | |
898 | struct scope_state *model_state; | |
899 | struct dev_context *devc; | |
900 | struct sr_channel *ch; | |
901 | struct sr_datafeed_packet packet; | |
902 | int chunk_len, num_bytes; | |
903 | static GArray *data = NULL; | |
904 | ||
905 | (void)fd; | |
906 | (void)revents; | |
907 | ||
908 | if (!(sdi = cb_data)) | |
909 | return FALSE; | |
910 | ||
911 | if (!(devc = sdi->priv)) | |
912 | return FALSE; | |
913 | ||
914 | if (!(model_state = (struct scope_state*)devc->model_state)) | |
915 | return FALSE; | |
916 | ||
917 | /* Are we waiting for a response from the device? */ | |
918 | if (!devc->data_pending) | |
919 | return TRUE; | |
920 | ||
921 | /* Check if a new query response is coming our way. */ | |
922 | if (!data) { | |
923 | if (sr_scpi_read_begin(sdi->conn) == SR_OK) | |
924 | /* The 16 here accounts for the header and EOL. */ | |
925 | data = g_array_sized_new(FALSE, FALSE, sizeof(uint8_t), | |
926 | 16 + model_state->samples_per_frame); | |
927 | else | |
928 | return TRUE; | |
929 | } | |
930 | ||
931 | /* Store incoming data. */ | |
932 | chunk_len = sr_scpi_read_data(sdi->conn, devc->receive_buffer, | |
933 | RECEIVE_BUFFER_SIZE); | |
934 | if (chunk_len < 0) { | |
935 | sr_err("Error while reading data: %d", chunk_len); | |
936 | goto fail; | |
937 | } | |
938 | g_array_append_vals(data, devc->receive_buffer, chunk_len); | |
939 | ||
940 | /* Read the entire query response before processing. */ | |
941 | if (!sr_scpi_read_complete(sdi->conn)) | |
942 | return TRUE; | |
943 | ||
944 | /* We finished reading and are no longer waiting for data. */ | |
945 | devc->data_pending = FALSE; | |
946 | ||
947 | /* Signal the beginning of a new frame if this is the first channel. */ | |
948 | if (devc->current_channel == devc->enabled_channels) { | |
949 | packet.type = SR_DF_FRAME_BEGIN; | |
950 | sr_session_send(sdi, &packet); | |
951 | } | |
952 | ||
953 | if (dlm_block_data_header_process(data, &num_bytes) != SR_OK) { | |
954 | sr_err("Encountered malformed block data header."); | |
955 | goto fail; | |
956 | } | |
957 | ||
958 | if (num_bytes == 0) { | |
959 | sr_warn("Zero-length waveform data packet received. " \ | |
960 | "Live mode not supported yet, stopping " \ | |
961 | "acquisition and retrying."); | |
962 | /* Don't care about return value here. */ | |
963 | dlm_acquisition_stop(sdi->conn); | |
964 | g_array_free(data, TRUE); | |
965 | dlm_channel_data_request(sdi); | |
966 | return TRUE; | |
967 | } | |
968 | ||
969 | ch = devc->current_channel->data; | |
970 | switch (ch->type) { | |
971 | case SR_CHANNEL_ANALOG: | |
972 | if (dlm_analog_samples_send(data, | |
973 | &model_state->analog_states[ch->index], | |
974 | sdi) != SR_OK) | |
975 | goto fail; | |
976 | break; | |
977 | case SR_CHANNEL_LOGIC: | |
978 | if (dlm_digital_samples_send(data, sdi) != SR_OK) | |
979 | goto fail; | |
980 | break; | |
981 | default: | |
982 | sr_err("Invalid channel type encountered."); | |
983 | break; | |
984 | } | |
985 | ||
986 | g_array_free(data, TRUE); | |
987 | data = NULL; | |
988 | ||
989 | /* Signal the end of this frame if this was the last enabled channel | |
990 | * and set the next enabled channel. Then, request its data. | |
991 | */ | |
992 | if (!devc->current_channel->next) { | |
993 | packet.type = SR_DF_FRAME_END; | |
994 | sr_session_send(sdi, &packet); | |
995 | devc->current_channel = devc->enabled_channels; | |
996 | ||
997 | /* As of now we only support importing the current acquisition | |
998 | * data so we're going to stop at this point. | |
999 | */ | |
1000 | sdi->driver->dev_acquisition_stop(sdi, cb_data); | |
1001 | return TRUE; | |
1002 | } else | |
1003 | devc->current_channel = devc->current_channel->next; | |
1004 | ||
1005 | if (dlm_channel_data_request(sdi) != SR_OK) { | |
1006 | sr_err("Failed to request aquisition data."); | |
1007 | goto fail; | |
1008 | } | |
1009 | ||
1010 | return TRUE; | |
1011 | ||
1012 | fail: | |
1013 | if (data) { | |
1014 | g_array_free(data, TRUE); | |
1015 | data = NULL; | |
1016 | } | |
1017 | ||
1018 | return FALSE; | |
1019 | } |