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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <config.h> | |
21 | #include <stdlib.h> | |
22 | #include "scpi.h" | |
23 | #include "protocol.h" | |
24 | ||
25 | #define SERIALCOMM "115200/8n1/flow=1" | |
26 | ||
27 | static struct sr_dev_driver hameg_hmo_driver_info; | |
28 | ||
29 | static const char *manufacturers[] = { | |
30 | "HAMEG", | |
31 | "Rohde&Schwarz", | |
32 | }; | |
33 | ||
34 | static const uint32_t drvopts[] = { | |
35 | SR_CONF_OSCILLOSCOPE, | |
36 | }; | |
37 | ||
38 | static const uint32_t scanopts[] = { | |
39 | SR_CONF_CONN, | |
40 | SR_CONF_SERIALCOMM, | |
41 | }; | |
42 | ||
43 | enum { | |
44 | CG_INVALID = -1, | |
45 | CG_NONE, | |
46 | CG_ANALOG, | |
47 | CG_DIGITAL, | |
48 | }; | |
49 | ||
50 | static int check_manufacturer(const char *manufacturer) | |
51 | { | |
52 | unsigned int i; | |
53 | ||
54 | for (i = 0; i < ARRAY_SIZE(manufacturers); i++) | |
55 | if (!strcmp(manufacturer, manufacturers[i])) | |
56 | return SR_OK; | |
57 | ||
58 | return SR_ERR; | |
59 | } | |
60 | ||
61 | static struct sr_dev_inst *hmo_probe_serial_device(struct sr_scpi_dev_inst *scpi) | |
62 | { | |
63 | struct sr_dev_inst *sdi; | |
64 | struct dev_context *devc; | |
65 | struct sr_scpi_hw_info *hw_info; | |
66 | ||
67 | sdi = NULL; | |
68 | devc = NULL; | |
69 | hw_info = NULL; | |
70 | ||
71 | if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) { | |
72 | sr_info("Couldn't get IDN response."); | |
73 | goto fail; | |
74 | } | |
75 | ||
76 | if (check_manufacturer(hw_info->manufacturer) != SR_OK) | |
77 | goto fail; | |
78 | ||
79 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
80 | sdi->vendor = g_strdup(hw_info->manufacturer); | |
81 | sdi->model = g_strdup(hw_info->model); | |
82 | sdi->version = g_strdup(hw_info->firmware_version); | |
83 | sdi->serial_num = g_strdup(hw_info->serial_number); | |
84 | sdi->driver = &hameg_hmo_driver_info; | |
85 | sdi->inst_type = SR_INST_SCPI; | |
86 | sdi->conn = scpi; | |
87 | ||
88 | sr_scpi_hw_info_free(hw_info); | |
89 | hw_info = NULL; | |
90 | ||
91 | devc = g_malloc0(sizeof(struct dev_context)); | |
92 | ||
93 | sdi->priv = devc; | |
94 | ||
95 | if (hmo_init_device(sdi) != SR_OK) | |
96 | goto fail; | |
97 | ||
98 | return sdi; | |
99 | ||
100 | fail: | |
101 | sr_scpi_hw_info_free(hw_info); | |
102 | sr_dev_inst_free(sdi); | |
103 | g_free(devc); | |
104 | ||
105 | return NULL; | |
106 | } | |
107 | ||
108 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
109 | { | |
110 | return sr_scpi_scan(di->context, options, hmo_probe_serial_device); | |
111 | } | |
112 | ||
113 | static void clear_helper(void *priv) | |
114 | { | |
115 | struct dev_context *devc; | |
116 | ||
117 | devc = priv; | |
118 | ||
119 | hmo_scope_state_free(devc->model_state); | |
120 | ||
121 | g_free(devc->analog_groups); | |
122 | g_free(devc->digital_groups); | |
123 | ||
124 | g_free(devc); | |
125 | } | |
126 | ||
127 | static int dev_clear(const struct sr_dev_driver *di) | |
128 | { | |
129 | return std_dev_clear(di, clear_helper); | |
130 | } | |
131 | ||
132 | static int dev_open(struct sr_dev_inst *sdi) | |
133 | { | |
134 | if (sr_scpi_open(sdi->conn) != SR_OK) | |
135 | return SR_ERR; | |
136 | ||
137 | if (hmo_scope_state_get(sdi) != SR_OK) | |
138 | return SR_ERR; | |
139 | ||
140 | sdi->status = SR_ST_ACTIVE; | |
141 | ||
142 | return SR_OK; | |
143 | } | |
144 | ||
145 | static int dev_close(struct sr_dev_inst *sdi) | |
146 | { | |
147 | sr_scpi_close(sdi->conn); | |
148 | ||
149 | sdi->status = SR_ST_INACTIVE; | |
150 | ||
151 | return SR_OK; | |
152 | } | |
153 | ||
154 | static int check_channel_group(struct dev_context *devc, | |
155 | const struct sr_channel_group *cg) | |
156 | { | |
157 | unsigned int i; | |
158 | const struct scope_config *model; | |
159 | ||
160 | model = devc->model_config; | |
161 | ||
162 | if (!cg) | |
163 | return CG_NONE; | |
164 | ||
165 | for (i = 0; i < model->analog_channels; i++) | |
166 | if (cg == devc->analog_groups[i]) | |
167 | return CG_ANALOG; | |
168 | ||
169 | for (i = 0; i < model->digital_pods; i++) | |
170 | if (cg == devc->digital_groups[i]) | |
171 | return CG_DIGITAL; | |
172 | ||
173 | sr_err("Invalid channel group specified."); | |
174 | ||
175 | return CG_INVALID; | |
176 | } | |
177 | ||
178 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
179 | const struct sr_channel_group *cg) | |
180 | { | |
181 | int ret, cg_type; | |
182 | unsigned int i; | |
183 | struct dev_context *devc; | |
184 | const struct scope_config *model; | |
185 | struct scope_state *state; | |
186 | ||
187 | if (!sdi) | |
188 | return SR_ERR_ARG; | |
189 | ||
190 | devc = sdi->priv; | |
191 | ||
192 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
193 | return SR_ERR; | |
194 | ||
195 | ret = SR_ERR_NA; | |
196 | model = devc->model_config; | |
197 | state = devc->model_state; | |
198 | ||
199 | switch (key) { | |
200 | case SR_CONF_NUM_HDIV: | |
201 | *data = g_variant_new_int32(model->num_xdivs); | |
202 | ret = SR_OK; | |
203 | break; | |
204 | case SR_CONF_TIMEBASE: | |
205 | *data = g_variant_new("(tt)", (*model->timebases)[state->timebase][0], | |
206 | (*model->timebases)[state->timebase][1]); | |
207 | ret = SR_OK; | |
208 | break; | |
209 | case SR_CONF_NUM_VDIV: | |
210 | if (cg_type == CG_NONE) { | |
211 | sr_err("No channel group specified."); | |
212 | return SR_ERR_CHANNEL_GROUP; | |
213 | } else if (cg_type == CG_ANALOG) { | |
214 | for (i = 0; i < model->analog_channels; i++) { | |
215 | if (cg != devc->analog_groups[i]) | |
216 | continue; | |
217 | *data = g_variant_new_int32(model->num_ydivs); | |
218 | ret = SR_OK; | |
219 | break; | |
220 | } | |
221 | ||
222 | } else { | |
223 | ret = SR_ERR_NA; | |
224 | } | |
225 | break; | |
226 | case SR_CONF_VDIV: | |
227 | if (cg_type == CG_NONE) { | |
228 | sr_err("No channel group specified."); | |
229 | return SR_ERR_CHANNEL_GROUP; | |
230 | } else if (cg_type == CG_ANALOG) { | |
231 | for (i = 0; i < model->analog_channels; i++) { | |
232 | if (cg != devc->analog_groups[i]) | |
233 | continue; | |
234 | *data = g_variant_new("(tt)", | |
235 | (*model->vdivs)[state->analog_channels[i].vdiv][0], | |
236 | (*model->vdivs)[state->analog_channels[i].vdiv][1]); | |
237 | ret = SR_OK; | |
238 | break; | |
239 | } | |
240 | ||
241 | } else { | |
242 | ret = SR_ERR_NA; | |
243 | } | |
244 | break; | |
245 | case SR_CONF_TRIGGER_SOURCE: | |
246 | *data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]); | |
247 | ret = SR_OK; | |
248 | break; | |
249 | case SR_CONF_TRIGGER_SLOPE: | |
250 | *data = g_variant_new_string((*model->trigger_slopes)[state->trigger_slope]); | |
251 | ret = SR_OK; | |
252 | break; | |
253 | case SR_CONF_HORIZ_TRIGGERPOS: | |
254 | *data = g_variant_new_double(state->horiz_triggerpos); | |
255 | ret = SR_OK; | |
256 | break; | |
257 | case SR_CONF_COUPLING: | |
258 | if (cg_type == CG_NONE) { | |
259 | sr_err("No channel group specified."); | |
260 | return SR_ERR_CHANNEL_GROUP; | |
261 | } else if (cg_type == CG_ANALOG) { | |
262 | for (i = 0; i < model->analog_channels; i++) { | |
263 | if (cg != devc->analog_groups[i]) | |
264 | continue; | |
265 | *data = g_variant_new_string((*model->coupling_options)[state->analog_channels[i].coupling]); | |
266 | ret = SR_OK; | |
267 | break; | |
268 | } | |
269 | ||
270 | } else { | |
271 | ret = SR_ERR_NA; | |
272 | } | |
273 | break; | |
274 | case SR_CONF_SAMPLERATE: | |
275 | *data = g_variant_new_uint64(state->sample_rate); | |
276 | ret = SR_OK; | |
277 | break; | |
278 | default: | |
279 | ret = SR_ERR_NA; | |
280 | } | |
281 | ||
282 | return ret; | |
283 | } | |
284 | ||
285 | static GVariant *build_tuples(const uint64_t (*array)[][2], unsigned int n) | |
286 | { | |
287 | unsigned int i; | |
288 | GVariant *rational[2]; | |
289 | GVariantBuilder gvb; | |
290 | ||
291 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
292 | ||
293 | for (i = 0; i < n; i++) { | |
294 | rational[0] = g_variant_new_uint64((*array)[i][0]); | |
295 | rational[1] = g_variant_new_uint64((*array)[i][1]); | |
296 | ||
297 | /* FIXME: Valgrind reports a memory leak here. */ | |
298 | g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2)); | |
299 | } | |
300 | ||
301 | return g_variant_builder_end(&gvb); | |
302 | } | |
303 | ||
304 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
305 | const struct sr_channel_group *cg) | |
306 | { | |
307 | int ret, cg_type; | |
308 | unsigned int i, j; | |
309 | char command[MAX_COMMAND_SIZE], float_str[30]; | |
310 | struct dev_context *devc; | |
311 | const struct scope_config *model; | |
312 | struct scope_state *state; | |
313 | const char *tmp; | |
314 | uint64_t p, q; | |
315 | double tmp_d; | |
316 | gboolean update_sample_rate; | |
317 | ||
318 | if (!sdi) | |
319 | return SR_ERR_ARG; | |
320 | ||
321 | devc = sdi->priv; | |
322 | ||
323 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
324 | return SR_ERR; | |
325 | ||
326 | model = devc->model_config; | |
327 | state = devc->model_state; | |
328 | update_sample_rate = FALSE; | |
329 | ||
330 | ret = SR_ERR_NA; | |
331 | ||
332 | switch (key) { | |
333 | case SR_CONF_LIMIT_FRAMES: | |
334 | devc->frame_limit = g_variant_get_uint64(data); | |
335 | ret = SR_OK; | |
336 | break; | |
337 | case SR_CONF_TRIGGER_SOURCE: | |
338 | tmp = g_variant_get_string(data, NULL); | |
339 | for (i = 0; (*model->trigger_sources)[i]; i++) { | |
340 | if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0) | |
341 | continue; | |
342 | state->trigger_source = i; | |
343 | g_snprintf(command, sizeof(command), | |
344 | (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE], | |
345 | (*model->trigger_sources)[i]); | |
346 | ||
347 | ret = sr_scpi_send(sdi->conn, command); | |
348 | break; | |
349 | } | |
350 | break; | |
351 | case SR_CONF_VDIV: | |
352 | if (cg_type == CG_NONE) { | |
353 | sr_err("No channel group specified."); | |
354 | return SR_ERR_CHANNEL_GROUP; | |
355 | } | |
356 | ||
357 | g_variant_get(data, "(tt)", &p, &q); | |
358 | ||
359 | for (i = 0; i < model->num_vdivs; i++) { | |
360 | if (p != (*model->vdivs)[i][0] || | |
361 | q != (*model->vdivs)[i][1]) | |
362 | continue; | |
363 | for (j = 1; j <= model->analog_channels; j++) { | |
364 | if (cg != devc->analog_groups[j - 1]) | |
365 | continue; | |
366 | state->analog_channels[j - 1].vdiv = i; | |
367 | g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q); | |
368 | g_snprintf(command, sizeof(command), | |
369 | (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV], | |
370 | j, float_str); | |
371 | ||
372 | if (sr_scpi_send(sdi->conn, command) != SR_OK || | |
373 | sr_scpi_get_opc(sdi->conn) != SR_OK) | |
374 | return SR_ERR; | |
375 | ||
376 | break; | |
377 | } | |
378 | ||
379 | ret = SR_OK; | |
380 | break; | |
381 | } | |
382 | break; | |
383 | case SR_CONF_TIMEBASE: | |
384 | g_variant_get(data, "(tt)", &p, &q); | |
385 | ||
386 | for (i = 0; i < model->num_timebases; i++) { | |
387 | if (p != (*model->timebases)[i][0] || | |
388 | q != (*model->timebases)[i][1]) | |
389 | continue; | |
390 | state->timebase = i; | |
391 | g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q); | |
392 | g_snprintf(command, sizeof(command), | |
393 | (*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE], | |
394 | float_str); | |
395 | ||
396 | ret = sr_scpi_send(sdi->conn, command); | |
397 | update_sample_rate = TRUE; | |
398 | break; | |
399 | } | |
400 | break; | |
401 | case SR_CONF_HORIZ_TRIGGERPOS: | |
402 | tmp_d = g_variant_get_double(data); | |
403 | ||
404 | if (tmp_d < 0.0 || tmp_d > 1.0) | |
405 | return SR_ERR; | |
406 | ||
407 | state->horiz_triggerpos = tmp_d; | |
408 | tmp_d = -(tmp_d - 0.5) * | |
409 | ((double) (*model->timebases)[state->timebase][0] / | |
410 | (*model->timebases)[state->timebase][1]) | |
411 | * model->num_xdivs; | |
412 | ||
413 | g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d); | |
414 | g_snprintf(command, sizeof(command), | |
415 | (*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS], | |
416 | float_str); | |
417 | ||
418 | ret = sr_scpi_send(sdi->conn, command); | |
419 | break; | |
420 | case SR_CONF_TRIGGER_SLOPE: | |
421 | tmp = g_variant_get_string(data, NULL); | |
422 | for (i = 0; (*model->trigger_slopes)[i]; i++) { | |
423 | if (g_strcmp0(tmp, (*model->trigger_slopes)[i]) != 0) | |
424 | continue; | |
425 | state->trigger_slope = i; | |
426 | g_snprintf(command, sizeof(command), | |
427 | (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE], | |
428 | (*model->trigger_slopes)[i]); | |
429 | ||
430 | ret = sr_scpi_send(sdi->conn, command); | |
431 | break; | |
432 | } | |
433 | break; | |
434 | case SR_CONF_COUPLING: | |
435 | if (cg_type == CG_NONE) { | |
436 | sr_err("No channel group specified."); | |
437 | return SR_ERR_CHANNEL_GROUP; | |
438 | } | |
439 | ||
440 | tmp = g_variant_get_string(data, NULL); | |
441 | ||
442 | for (i = 0; (*model->coupling_options)[i]; i++) { | |
443 | if (strcmp(tmp, (*model->coupling_options)[i]) != 0) | |
444 | continue; | |
445 | for (j = 1; j <= model->analog_channels; j++) { | |
446 | if (cg != devc->analog_groups[j - 1]) | |
447 | continue; | |
448 | state->analog_channels[j-1].coupling = i; | |
449 | ||
450 | g_snprintf(command, sizeof(command), | |
451 | (*model->scpi_dialect)[SCPI_CMD_SET_COUPLING], | |
452 | j, tmp); | |
453 | ||
454 | if (sr_scpi_send(sdi->conn, command) != SR_OK || | |
455 | sr_scpi_get_opc(sdi->conn) != SR_OK) | |
456 | return SR_ERR; | |
457 | break; | |
458 | } | |
459 | ||
460 | ret = SR_OK; | |
461 | break; | |
462 | } | |
463 | break; | |
464 | default: | |
465 | ret = SR_ERR_NA; | |
466 | break; | |
467 | } | |
468 | ||
469 | if (ret == SR_OK) | |
470 | ret = sr_scpi_get_opc(sdi->conn); | |
471 | ||
472 | if (ret == SR_OK && update_sample_rate) | |
473 | ret = hmo_update_sample_rate(sdi); | |
474 | ||
475 | return ret; | |
476 | } | |
477 | ||
478 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
479 | const struct sr_channel_group *cg) | |
480 | { | |
481 | int cg_type = CG_NONE; | |
482 | struct dev_context *devc = NULL; | |
483 | const struct scope_config *model = NULL; | |
484 | ||
485 | if (sdi) { | |
486 | devc = sdi->priv; | |
487 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
488 | return SR_ERR; | |
489 | ||
490 | model = devc->model_config; | |
491 | } | |
492 | ||
493 | switch (key) { | |
494 | case SR_CONF_SCAN_OPTIONS: | |
495 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
496 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
497 | break; | |
498 | case SR_CONF_DEVICE_OPTIONS: | |
499 | if (cg_type == CG_NONE) { | |
500 | if (model) | |
501 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
502 | model->devopts, model->num_devopts, sizeof(uint32_t)); | |
503 | else | |
504 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
505 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
506 | } else if (cg_type == CG_ANALOG) { | |
507 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
508 | model->analog_devopts, model->num_analog_devopts, | |
509 | sizeof(uint32_t)); | |
510 | } else { | |
511 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
512 | NULL, 0, sizeof(uint32_t)); | |
513 | } | |
514 | break; | |
515 | case SR_CONF_COUPLING: | |
516 | if (cg_type == CG_NONE) | |
517 | return SR_ERR_CHANNEL_GROUP; | |
518 | *data = g_variant_new_strv(*model->coupling_options, | |
519 | g_strv_length((char **)*model->coupling_options)); | |
520 | break; | |
521 | case SR_CONF_TRIGGER_SOURCE: | |
522 | if (!model) | |
523 | return SR_ERR_ARG; | |
524 | *data = g_variant_new_strv(*model->trigger_sources, | |
525 | g_strv_length((char **)*model->trigger_sources)); | |
526 | break; | |
527 | case SR_CONF_TRIGGER_SLOPE: | |
528 | if (!model) | |
529 | return SR_ERR_ARG; | |
530 | *data = g_variant_new_strv(*model->trigger_slopes, | |
531 | g_strv_length((char **)*model->trigger_slopes)); | |
532 | break; | |
533 | case SR_CONF_TIMEBASE: | |
534 | if (!model) | |
535 | return SR_ERR_ARG; | |
536 | *data = build_tuples(model->timebases, model->num_timebases); | |
537 | break; | |
538 | case SR_CONF_VDIV: | |
539 | if (cg_type == CG_NONE) | |
540 | return SR_ERR_CHANNEL_GROUP; | |
541 | *data = build_tuples(model->vdivs, model->num_vdivs); | |
542 | break; | |
543 | default: | |
544 | return SR_ERR_NA; | |
545 | } | |
546 | ||
547 | return SR_OK; | |
548 | } | |
549 | ||
550 | SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi) | |
551 | { | |
552 | char command[MAX_COMMAND_SIZE]; | |
553 | struct sr_channel *ch; | |
554 | struct dev_context *devc; | |
555 | const struct scope_config *model; | |
556 | ||
557 | devc = sdi->priv; | |
558 | model = devc->model_config; | |
559 | ||
560 | ch = devc->current_channel->data; | |
561 | ||
562 | switch (ch->type) { | |
563 | case SR_CHANNEL_ANALOG: | |
564 | g_snprintf(command, sizeof(command), | |
565 | (*model->scpi_dialect)[SCPI_CMD_GET_ANALOG_DATA], | |
566 | #ifdef WORDS_BIGENDIAN | |
567 | "MSBF", | |
568 | #else | |
569 | "LSBF", | |
570 | #endif | |
571 | ch->index + 1); | |
572 | break; | |
573 | case SR_CHANNEL_LOGIC: | |
574 | g_snprintf(command, sizeof(command), | |
575 | (*model->scpi_dialect)[SCPI_CMD_GET_DIG_DATA], | |
576 | ch->index < 8 ? 1 : 2); | |
577 | break; | |
578 | default: | |
579 | sr_err("Invalid channel type."); | |
580 | break; | |
581 | } | |
582 | ||
583 | return sr_scpi_send(sdi->conn, command); | |
584 | } | |
585 | ||
586 | static int hmo_check_channels(GSList *channels) | |
587 | { | |
588 | GSList *l; | |
589 | struct sr_channel *ch; | |
590 | gboolean enabled_chan[MAX_ANALOG_CHANNEL_COUNT]; | |
591 | gboolean enabled_pod[MAX_DIGITAL_GROUP_COUNT]; | |
592 | size_t idx; | |
593 | ||
594 | /* Preset "not enabled" for all channels / pods. */ | |
595 | for (idx = 0; idx < ARRAY_SIZE(enabled_chan); idx++) | |
596 | enabled_chan[idx] = FALSE; | |
597 | for (idx = 0; idx < ARRAY_SIZE(enabled_pod); idx++) | |
598 | enabled_pod[idx] = FALSE; | |
599 | ||
600 | /* | |
601 | * Determine which channels / pods are required for the caller's | |
602 | * specified configuration. | |
603 | */ | |
604 | for (l = channels; l; l = l->next) { | |
605 | ch = l->data; | |
606 | switch (ch->type) { | |
607 | case SR_CHANNEL_ANALOG: | |
608 | idx = ch->index; | |
609 | if (idx < ARRAY_SIZE(enabled_chan)) | |
610 | enabled_chan[idx] = TRUE; | |
611 | break; | |
612 | case SR_CHANNEL_LOGIC: | |
613 | idx = ch->index / 8; | |
614 | if (idx < ARRAY_SIZE(enabled_pod)) | |
615 | enabled_pod[idx] = TRUE; | |
616 | break; | |
617 | default: | |
618 | return SR_ERR; | |
619 | } | |
620 | } | |
621 | ||
622 | /* | |
623 | * Check for resource conflicts. Some channels can be either | |
624 | * analog or digital, but never both at the same time. | |
625 | * | |
626 | * Note that the constraints might depend on the specific model. | |
627 | * These tests might need some adjustment when support for more | |
628 | * models gets added to the driver. | |
629 | */ | |
630 | if (enabled_pod[0] && enabled_chan[2]) | |
631 | return SR_ERR; | |
632 | if (enabled_pod[1] && enabled_chan[3]) | |
633 | return SR_ERR; | |
634 | return SR_OK; | |
635 | } | |
636 | ||
637 | static int hmo_setup_channels(const struct sr_dev_inst *sdi) | |
638 | { | |
639 | GSList *l; | |
640 | unsigned int i; | |
641 | gboolean *pod_enabled, setup_changed; | |
642 | char command[MAX_COMMAND_SIZE]; | |
643 | struct scope_state *state; | |
644 | const struct scope_config *model; | |
645 | struct sr_channel *ch; | |
646 | struct dev_context *devc; | |
647 | struct sr_scpi_dev_inst *scpi; | |
648 | ||
649 | devc = sdi->priv; | |
650 | scpi = sdi->conn; | |
651 | state = devc->model_state; | |
652 | model = devc->model_config; | |
653 | setup_changed = FALSE; | |
654 | ||
655 | pod_enabled = g_try_malloc0(sizeof(gboolean) * model->digital_pods); | |
656 | ||
657 | for (l = sdi->channels; l; l = l->next) { | |
658 | ch = l->data; | |
659 | switch (ch->type) { | |
660 | case SR_CHANNEL_ANALOG: | |
661 | if (ch->enabled == state->analog_channels[ch->index].state) | |
662 | break; | |
663 | g_snprintf(command, sizeof(command), | |
664 | (*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE], | |
665 | ch->index + 1, ch->enabled); | |
666 | ||
667 | if (sr_scpi_send(scpi, command) != SR_OK) | |
668 | return SR_ERR; | |
669 | state->analog_channels[ch->index].state = ch->enabled; | |
670 | setup_changed = TRUE; | |
671 | break; | |
672 | case SR_CHANNEL_LOGIC: | |
673 | /* | |
674 | * A digital POD needs to be enabled for every group of | |
675 | * 8 channels. | |
676 | */ | |
677 | if (ch->enabled) | |
678 | pod_enabled[ch->index < 8 ? 0 : 1] = TRUE; | |
679 | ||
680 | if (ch->enabled == state->digital_channels[ch->index]) | |
681 | break; | |
682 | g_snprintf(command, sizeof(command), | |
683 | (*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE], | |
684 | ch->index, ch->enabled); | |
685 | ||
686 | if (sr_scpi_send(scpi, command) != SR_OK) | |
687 | return SR_ERR; | |
688 | ||
689 | state->digital_channels[ch->index] = ch->enabled; | |
690 | setup_changed = TRUE; | |
691 | break; | |
692 | default: | |
693 | return SR_ERR; | |
694 | } | |
695 | } | |
696 | ||
697 | for (i = 1; i <= model->digital_pods; i++) { | |
698 | if (state->digital_pods[i - 1] == pod_enabled[i - 1]) | |
699 | continue; | |
700 | g_snprintf(command, sizeof(command), | |
701 | (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_STATE], | |
702 | i, pod_enabled[i - 1]); | |
703 | if (sr_scpi_send(scpi, command) != SR_OK) | |
704 | return SR_ERR; | |
705 | state->digital_pods[i - 1] = pod_enabled[i - 1]; | |
706 | setup_changed = TRUE; | |
707 | } | |
708 | ||
709 | g_free(pod_enabled); | |
710 | ||
711 | if (setup_changed && hmo_update_sample_rate(sdi) != SR_OK) | |
712 | return SR_ERR; | |
713 | ||
714 | return SR_OK; | |
715 | } | |
716 | ||
717 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
718 | { | |
719 | GSList *l; | |
720 | gboolean digital_added[MAX_DIGITAL_GROUP_COUNT]; | |
721 | size_t group, pod_count; | |
722 | struct sr_channel *ch; | |
723 | struct dev_context *devc; | |
724 | struct sr_scpi_dev_inst *scpi; | |
725 | int ret; | |
726 | ||
727 | scpi = sdi->conn; | |
728 | devc = sdi->priv; | |
729 | ||
730 | /* Preset empty results. */ | |
731 | for (group = 0; group < ARRAY_SIZE(digital_added); group++) | |
732 | digital_added[group] = FALSE; | |
733 | g_slist_free(devc->enabled_channels); | |
734 | devc->enabled_channels = NULL; | |
735 | ||
736 | /* | |
737 | * Contruct the list of enabled channels. Determine the highest | |
738 | * number of digital pods involved in the acquisition. | |
739 | */ | |
740 | pod_count = 0; | |
741 | for (l = sdi->channels; l; l = l->next) { | |
742 | ch = l->data; | |
743 | if (!ch->enabled) | |
744 | continue; | |
745 | /* Only add a single digital channel per group (pod). */ | |
746 | group = ch->index / 8; | |
747 | if (ch->type != SR_CHANNEL_LOGIC || !digital_added[group]) { | |
748 | devc->enabled_channels = g_slist_append( | |
749 | devc->enabled_channels, ch); | |
750 | if (ch->type == SR_CHANNEL_LOGIC) { | |
751 | digital_added[group] = TRUE; | |
752 | if (pod_count < group + 1) | |
753 | pod_count = group + 1; | |
754 | } | |
755 | } | |
756 | } | |
757 | if (!devc->enabled_channels) | |
758 | return SR_ERR; | |
759 | devc->pod_count = pod_count; | |
760 | devc->logic_data = NULL; | |
761 | ||
762 | /* | |
763 | * Check constraints. Some channels can be either analog or | |
764 | * digital, but not both at the same time. | |
765 | */ | |
766 | if (hmo_check_channels(devc->enabled_channels) != SR_OK) { | |
767 | sr_err("Invalid channel configuration specified!"); | |
768 | ret = SR_ERR_NA; | |
769 | goto free_enabled; | |
770 | } | |
771 | ||
772 | /* | |
773 | * Configure the analog and digital channels and the | |
774 | * corresponding digital pods. | |
775 | */ | |
776 | if (hmo_setup_channels(sdi) != SR_OK) { | |
777 | sr_err("Failed to setup channel configuration!"); | |
778 | ret = SR_ERR; | |
779 | goto free_enabled; | |
780 | } | |
781 | ||
782 | /* | |
783 | * Start acquisition on the first enabled channel. The | |
784 | * receive routine will continue driving the acquisition. | |
785 | */ | |
786 | sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50, | |
787 | hmo_receive_data, (void *)sdi); | |
788 | ||
789 | std_session_send_df_header(sdi); | |
790 | ||
791 | devc->current_channel = devc->enabled_channels; | |
792 | ||
793 | return hmo_request_data(sdi); | |
794 | ||
795 | free_enabled: | |
796 | g_slist_free(devc->enabled_channels); | |
797 | devc->enabled_channels = NULL; | |
798 | return ret; | |
799 | } | |
800 | ||
801 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
802 | { | |
803 | struct dev_context *devc; | |
804 | struct sr_scpi_dev_inst *scpi; | |
805 | ||
806 | std_session_send_df_end(sdi); | |
807 | ||
808 | devc = sdi->priv; | |
809 | ||
810 | devc->num_frames = 0; | |
811 | g_slist_free(devc->enabled_channels); | |
812 | devc->enabled_channels = NULL; | |
813 | scpi = sdi->conn; | |
814 | sr_scpi_source_remove(sdi->session, scpi); | |
815 | ||
816 | return SR_OK; | |
817 | } | |
818 | ||
819 | static struct sr_dev_driver hameg_hmo_driver_info = { | |
820 | .name = "hameg-hmo", | |
821 | .longname = "Hameg HMO", | |
822 | .api_version = 1, | |
823 | .init = std_init, | |
824 | .cleanup = std_cleanup, | |
825 | .scan = scan, | |
826 | .dev_list = std_dev_list, | |
827 | .dev_clear = dev_clear, | |
828 | .config_get = config_get, | |
829 | .config_set = config_set, | |
830 | .config_list = config_list, | |
831 | .dev_open = dev_open, | |
832 | .dev_close = dev_close, | |
833 | .dev_acquisition_start = dev_acquisition_start, | |
834 | .dev_acquisition_stop = dev_acquisition_stop, | |
835 | .context = NULL, | |
836 | }; | |
837 | SR_REGISTER_DEV_DRIVER(hameg_hmo_driver_info); |