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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 | return SR_OK; | |
141 | } | |
142 | ||
143 | static int dev_close(struct sr_dev_inst *sdi) | |
144 | { | |
145 | return sr_scpi_close(sdi->conn); | |
146 | } | |
147 | ||
148 | static int check_channel_group(struct dev_context *devc, | |
149 | const struct sr_channel_group *cg) | |
150 | { | |
151 | unsigned int i; | |
152 | const struct scope_config *model; | |
153 | ||
154 | model = devc->model_config; | |
155 | ||
156 | if (!cg) | |
157 | return CG_NONE; | |
158 | ||
159 | for (i = 0; i < model->analog_channels; i++) | |
160 | if (cg == devc->analog_groups[i]) | |
161 | return CG_ANALOG; | |
162 | ||
163 | for (i = 0; i < model->digital_pods; i++) | |
164 | if (cg == devc->digital_groups[i]) | |
165 | return CG_DIGITAL; | |
166 | ||
167 | sr_err("Invalid channel group specified."); | |
168 | ||
169 | return CG_INVALID; | |
170 | } | |
171 | ||
172 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
173 | const struct sr_channel_group *cg) | |
174 | { | |
175 | int ret, cg_type; | |
176 | unsigned int i; | |
177 | struct dev_context *devc; | |
178 | const struct scope_config *model; | |
179 | struct scope_state *state; | |
180 | ||
181 | if (!sdi) | |
182 | return SR_ERR_ARG; | |
183 | ||
184 | devc = sdi->priv; | |
185 | ||
186 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
187 | return SR_ERR; | |
188 | ||
189 | ret = SR_ERR_NA; | |
190 | model = devc->model_config; | |
191 | state = devc->model_state; | |
192 | ||
193 | switch (key) { | |
194 | case SR_CONF_NUM_HDIV: | |
195 | *data = g_variant_new_int32(model->num_xdivs); | |
196 | ret = SR_OK; | |
197 | break; | |
198 | case SR_CONF_TIMEBASE: | |
199 | *data = g_variant_new("(tt)", (*model->timebases)[state->timebase][0], | |
200 | (*model->timebases)[state->timebase][1]); | |
201 | ret = SR_OK; | |
202 | break; | |
203 | case SR_CONF_NUM_VDIV: | |
204 | if (cg_type == CG_NONE) { | |
205 | sr_err("No channel group specified."); | |
206 | return SR_ERR_CHANNEL_GROUP; | |
207 | } else if (cg_type == CG_ANALOG) { | |
208 | for (i = 0; i < model->analog_channels; i++) { | |
209 | if (cg != devc->analog_groups[i]) | |
210 | continue; | |
211 | *data = g_variant_new_int32(model->num_ydivs); | |
212 | ret = SR_OK; | |
213 | break; | |
214 | } | |
215 | ||
216 | } else { | |
217 | ret = SR_ERR_NA; | |
218 | } | |
219 | break; | |
220 | case SR_CONF_VDIV: | |
221 | if (cg_type == CG_NONE) { | |
222 | sr_err("No channel group specified."); | |
223 | return SR_ERR_CHANNEL_GROUP; | |
224 | } else if (cg_type == CG_ANALOG) { | |
225 | for (i = 0; i < model->analog_channels; i++) { | |
226 | if (cg != devc->analog_groups[i]) | |
227 | continue; | |
228 | *data = g_variant_new("(tt)", | |
229 | (*model->vdivs)[state->analog_channels[i].vdiv][0], | |
230 | (*model->vdivs)[state->analog_channels[i].vdiv][1]); | |
231 | ret = SR_OK; | |
232 | break; | |
233 | } | |
234 | ||
235 | } else { | |
236 | ret = SR_ERR_NA; | |
237 | } | |
238 | break; | |
239 | case SR_CONF_TRIGGER_SOURCE: | |
240 | *data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]); | |
241 | ret = SR_OK; | |
242 | break; | |
243 | case SR_CONF_TRIGGER_SLOPE: | |
244 | *data = g_variant_new_string((*model->trigger_slopes)[state->trigger_slope]); | |
245 | ret = SR_OK; | |
246 | break; | |
247 | case SR_CONF_HORIZ_TRIGGERPOS: | |
248 | *data = g_variant_new_double(state->horiz_triggerpos); | |
249 | ret = SR_OK; | |
250 | break; | |
251 | case SR_CONF_COUPLING: | |
252 | if (cg_type == CG_NONE) { | |
253 | sr_err("No channel group specified."); | |
254 | return SR_ERR_CHANNEL_GROUP; | |
255 | } else if (cg_type == CG_ANALOG) { | |
256 | for (i = 0; i < model->analog_channels; i++) { | |
257 | if (cg != devc->analog_groups[i]) | |
258 | continue; | |
259 | *data = g_variant_new_string((*model->coupling_options)[state->analog_channels[i].coupling]); | |
260 | ret = SR_OK; | |
261 | break; | |
262 | } | |
263 | ||
264 | } else { | |
265 | ret = SR_ERR_NA; | |
266 | } | |
267 | break; | |
268 | case SR_CONF_SAMPLERATE: | |
269 | *data = g_variant_new_uint64(state->sample_rate); | |
270 | ret = SR_OK; | |
271 | break; | |
272 | default: | |
273 | ret = SR_ERR_NA; | |
274 | } | |
275 | ||
276 | return ret; | |
277 | } | |
278 | ||
279 | static GVariant *build_tuples(const uint64_t (*array)[][2], unsigned int n) | |
280 | { | |
281 | unsigned int i; | |
282 | GVariant *rational[2]; | |
283 | GVariantBuilder gvb; | |
284 | ||
285 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
286 | ||
287 | for (i = 0; i < n; i++) { | |
288 | rational[0] = g_variant_new_uint64((*array)[i][0]); | |
289 | rational[1] = g_variant_new_uint64((*array)[i][1]); | |
290 | ||
291 | /* FIXME: Valgrind reports a memory leak here. */ | |
292 | g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2)); | |
293 | } | |
294 | ||
295 | return g_variant_builder_end(&gvb); | |
296 | } | |
297 | ||
298 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
299 | const struct sr_channel_group *cg) | |
300 | { | |
301 | int ret, cg_type; | |
302 | unsigned int i, j; | |
303 | char command[MAX_COMMAND_SIZE], float_str[30]; | |
304 | struct dev_context *devc; | |
305 | const struct scope_config *model; | |
306 | struct scope_state *state; | |
307 | const char *tmp; | |
308 | uint64_t p, q; | |
309 | double tmp_d; | |
310 | gboolean update_sample_rate; | |
311 | ||
312 | if (!sdi) | |
313 | return SR_ERR_ARG; | |
314 | ||
315 | devc = sdi->priv; | |
316 | ||
317 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
318 | return SR_ERR; | |
319 | ||
320 | model = devc->model_config; | |
321 | state = devc->model_state; | |
322 | update_sample_rate = FALSE; | |
323 | ||
324 | ret = SR_ERR_NA; | |
325 | ||
326 | switch (key) { | |
327 | case SR_CONF_LIMIT_FRAMES: | |
328 | devc->frame_limit = g_variant_get_uint64(data); | |
329 | ret = SR_OK; | |
330 | break; | |
331 | case SR_CONF_TRIGGER_SOURCE: | |
332 | tmp = g_variant_get_string(data, NULL); | |
333 | for (i = 0; (*model->trigger_sources)[i]; i++) { | |
334 | if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0) | |
335 | continue; | |
336 | state->trigger_source = i; | |
337 | g_snprintf(command, sizeof(command), | |
338 | (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE], | |
339 | (*model->trigger_sources)[i]); | |
340 | ||
341 | ret = sr_scpi_send(sdi->conn, command); | |
342 | break; | |
343 | } | |
344 | break; | |
345 | case SR_CONF_VDIV: | |
346 | if (cg_type == CG_NONE) { | |
347 | sr_err("No channel group specified."); | |
348 | return SR_ERR_CHANNEL_GROUP; | |
349 | } | |
350 | ||
351 | g_variant_get(data, "(tt)", &p, &q); | |
352 | ||
353 | for (i = 0; i < model->num_vdivs; i++) { | |
354 | if (p != (*model->vdivs)[i][0] || | |
355 | q != (*model->vdivs)[i][1]) | |
356 | continue; | |
357 | for (j = 1; j <= model->analog_channels; j++) { | |
358 | if (cg != devc->analog_groups[j - 1]) | |
359 | continue; | |
360 | state->analog_channels[j - 1].vdiv = i; | |
361 | g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q); | |
362 | g_snprintf(command, sizeof(command), | |
363 | (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV], | |
364 | j, float_str); | |
365 | ||
366 | if (sr_scpi_send(sdi->conn, command) != SR_OK || | |
367 | sr_scpi_get_opc(sdi->conn) != SR_OK) | |
368 | return SR_ERR; | |
369 | ||
370 | break; | |
371 | } | |
372 | ||
373 | ret = SR_OK; | |
374 | break; | |
375 | } | |
376 | break; | |
377 | case SR_CONF_TIMEBASE: | |
378 | g_variant_get(data, "(tt)", &p, &q); | |
379 | ||
380 | for (i = 0; i < model->num_timebases; i++) { | |
381 | if (p != (*model->timebases)[i][0] || | |
382 | q != (*model->timebases)[i][1]) | |
383 | continue; | |
384 | state->timebase = i; | |
385 | g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q); | |
386 | g_snprintf(command, sizeof(command), | |
387 | (*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE], | |
388 | float_str); | |
389 | ||
390 | ret = sr_scpi_send(sdi->conn, command); | |
391 | update_sample_rate = TRUE; | |
392 | break; | |
393 | } | |
394 | break; | |
395 | case SR_CONF_HORIZ_TRIGGERPOS: | |
396 | tmp_d = g_variant_get_double(data); | |
397 | ||
398 | if (tmp_d < 0.0 || tmp_d > 1.0) | |
399 | return SR_ERR; | |
400 | ||
401 | state->horiz_triggerpos = tmp_d; | |
402 | tmp_d = -(tmp_d - 0.5) * | |
403 | ((double) (*model->timebases)[state->timebase][0] / | |
404 | (*model->timebases)[state->timebase][1]) | |
405 | * model->num_xdivs; | |
406 | ||
407 | g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d); | |
408 | g_snprintf(command, sizeof(command), | |
409 | (*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS], | |
410 | float_str); | |
411 | ||
412 | ret = sr_scpi_send(sdi->conn, command); | |
413 | break; | |
414 | case SR_CONF_TRIGGER_SLOPE: | |
415 | tmp = g_variant_get_string(data, NULL); | |
416 | for (i = 0; (*model->trigger_slopes)[i]; i++) { | |
417 | if (g_strcmp0(tmp, (*model->trigger_slopes)[i]) != 0) | |
418 | continue; | |
419 | state->trigger_slope = i; | |
420 | g_snprintf(command, sizeof(command), | |
421 | (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE], | |
422 | (*model->trigger_slopes)[i]); | |
423 | ||
424 | ret = sr_scpi_send(sdi->conn, command); | |
425 | break; | |
426 | } | |
427 | break; | |
428 | case SR_CONF_COUPLING: | |
429 | if (cg_type == CG_NONE) { | |
430 | sr_err("No channel group specified."); | |
431 | return SR_ERR_CHANNEL_GROUP; | |
432 | } | |
433 | ||
434 | tmp = g_variant_get_string(data, NULL); | |
435 | ||
436 | for (i = 0; (*model->coupling_options)[i]; i++) { | |
437 | if (strcmp(tmp, (*model->coupling_options)[i]) != 0) | |
438 | continue; | |
439 | for (j = 1; j <= model->analog_channels; j++) { | |
440 | if (cg != devc->analog_groups[j - 1]) | |
441 | continue; | |
442 | state->analog_channels[j-1].coupling = i; | |
443 | ||
444 | g_snprintf(command, sizeof(command), | |
445 | (*model->scpi_dialect)[SCPI_CMD_SET_COUPLING], | |
446 | j, tmp); | |
447 | ||
448 | if (sr_scpi_send(sdi->conn, command) != SR_OK || | |
449 | sr_scpi_get_opc(sdi->conn) != SR_OK) | |
450 | return SR_ERR; | |
451 | break; | |
452 | } | |
453 | ||
454 | ret = SR_OK; | |
455 | break; | |
456 | } | |
457 | break; | |
458 | default: | |
459 | ret = SR_ERR_NA; | |
460 | break; | |
461 | } | |
462 | ||
463 | if (ret == SR_OK) | |
464 | ret = sr_scpi_get_opc(sdi->conn); | |
465 | ||
466 | if (ret == SR_OK && update_sample_rate) | |
467 | ret = hmo_update_sample_rate(sdi); | |
468 | ||
469 | return ret; | |
470 | } | |
471 | ||
472 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
473 | const struct sr_channel_group *cg) | |
474 | { | |
475 | int cg_type = CG_NONE; | |
476 | struct dev_context *devc = NULL; | |
477 | const struct scope_config *model = NULL; | |
478 | ||
479 | if (sdi) { | |
480 | devc = sdi->priv; | |
481 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
482 | return SR_ERR; | |
483 | ||
484 | model = devc->model_config; | |
485 | } | |
486 | ||
487 | switch (key) { | |
488 | case SR_CONF_SCAN_OPTIONS: | |
489 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
490 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
491 | break; | |
492 | case SR_CONF_DEVICE_OPTIONS: | |
493 | if (cg_type == CG_NONE) { | |
494 | if (model) | |
495 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
496 | model->devopts, model->num_devopts, sizeof(uint32_t)); | |
497 | else | |
498 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
499 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
500 | } else if (cg_type == CG_ANALOG) { | |
501 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
502 | model->analog_devopts, model->num_analog_devopts, | |
503 | sizeof(uint32_t)); | |
504 | } else { | |
505 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
506 | NULL, 0, sizeof(uint32_t)); | |
507 | } | |
508 | break; | |
509 | case SR_CONF_COUPLING: | |
510 | if (cg_type == CG_NONE) | |
511 | return SR_ERR_CHANNEL_GROUP; | |
512 | *data = g_variant_new_strv(*model->coupling_options, | |
513 | g_strv_length((char **)*model->coupling_options)); | |
514 | break; | |
515 | case SR_CONF_TRIGGER_SOURCE: | |
516 | if (!model) | |
517 | return SR_ERR_ARG; | |
518 | *data = g_variant_new_strv(*model->trigger_sources, | |
519 | g_strv_length((char **)*model->trigger_sources)); | |
520 | break; | |
521 | case SR_CONF_TRIGGER_SLOPE: | |
522 | if (!model) | |
523 | return SR_ERR_ARG; | |
524 | *data = g_variant_new_strv(*model->trigger_slopes, | |
525 | g_strv_length((char **)*model->trigger_slopes)); | |
526 | break; | |
527 | case SR_CONF_TIMEBASE: | |
528 | if (!model) | |
529 | return SR_ERR_ARG; | |
530 | *data = build_tuples(model->timebases, model->num_timebases); | |
531 | break; | |
532 | case SR_CONF_VDIV: | |
533 | if (cg_type == CG_NONE) | |
534 | return SR_ERR_CHANNEL_GROUP; | |
535 | *data = build_tuples(model->vdivs, model->num_vdivs); | |
536 | break; | |
537 | default: | |
538 | return SR_ERR_NA; | |
539 | } | |
540 | ||
541 | return SR_OK; | |
542 | } | |
543 | ||
544 | SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi) | |
545 | { | |
546 | char command[MAX_COMMAND_SIZE]; | |
547 | struct sr_channel *ch; | |
548 | struct dev_context *devc; | |
549 | const struct scope_config *model; | |
550 | ||
551 | devc = sdi->priv; | |
552 | model = devc->model_config; | |
553 | ||
554 | ch = devc->current_channel->data; | |
555 | ||
556 | switch (ch->type) { | |
557 | case SR_CHANNEL_ANALOG: | |
558 | g_snprintf(command, sizeof(command), | |
559 | (*model->scpi_dialect)[SCPI_CMD_GET_ANALOG_DATA], | |
560 | #ifdef WORDS_BIGENDIAN | |
561 | "MSBF", | |
562 | #else | |
563 | "LSBF", | |
564 | #endif | |
565 | ch->index + 1); | |
566 | break; | |
567 | case SR_CHANNEL_LOGIC: | |
568 | g_snprintf(command, sizeof(command), | |
569 | (*model->scpi_dialect)[SCPI_CMD_GET_DIG_DATA], | |
570 | ch->index < 8 ? 1 : 2); | |
571 | break; | |
572 | default: | |
573 | sr_err("Invalid channel type."); | |
574 | break; | |
575 | } | |
576 | ||
577 | return sr_scpi_send(sdi->conn, command); | |
578 | } | |
579 | ||
580 | static int hmo_check_channels(GSList *channels) | |
581 | { | |
582 | GSList *l; | |
583 | struct sr_channel *ch; | |
584 | gboolean enabled_chan[MAX_ANALOG_CHANNEL_COUNT]; | |
585 | gboolean enabled_pod[MAX_DIGITAL_GROUP_COUNT]; | |
586 | size_t idx; | |
587 | ||
588 | /* Preset "not enabled" for all channels / pods. */ | |
589 | for (idx = 0; idx < ARRAY_SIZE(enabled_chan); idx++) | |
590 | enabled_chan[idx] = FALSE; | |
591 | for (idx = 0; idx < ARRAY_SIZE(enabled_pod); idx++) | |
592 | enabled_pod[idx] = FALSE; | |
593 | ||
594 | /* | |
595 | * Determine which channels / pods are required for the caller's | |
596 | * specified configuration. | |
597 | */ | |
598 | for (l = channels; l; l = l->next) { | |
599 | ch = l->data; | |
600 | switch (ch->type) { | |
601 | case SR_CHANNEL_ANALOG: | |
602 | idx = ch->index; | |
603 | if (idx < ARRAY_SIZE(enabled_chan)) | |
604 | enabled_chan[idx] = TRUE; | |
605 | break; | |
606 | case SR_CHANNEL_LOGIC: | |
607 | idx = ch->index / 8; | |
608 | if (idx < ARRAY_SIZE(enabled_pod)) | |
609 | enabled_pod[idx] = TRUE; | |
610 | break; | |
611 | default: | |
612 | return SR_ERR; | |
613 | } | |
614 | } | |
615 | ||
616 | /* | |
617 | * Check for resource conflicts. Some channels can be either | |
618 | * analog or digital, but never both at the same time. | |
619 | * | |
620 | * Note that the constraints might depend on the specific model. | |
621 | * These tests might need some adjustment when support for more | |
622 | * models gets added to the driver. | |
623 | */ | |
624 | if (enabled_pod[0] && enabled_chan[2]) | |
625 | return SR_ERR; | |
626 | if (enabled_pod[1] && enabled_chan[3]) | |
627 | return SR_ERR; | |
628 | return SR_OK; | |
629 | } | |
630 | ||
631 | static int hmo_setup_channels(const struct sr_dev_inst *sdi) | |
632 | { | |
633 | GSList *l; | |
634 | unsigned int i; | |
635 | gboolean *pod_enabled, setup_changed; | |
636 | char command[MAX_COMMAND_SIZE]; | |
637 | struct scope_state *state; | |
638 | const struct scope_config *model; | |
639 | struct sr_channel *ch; | |
640 | struct dev_context *devc; | |
641 | struct sr_scpi_dev_inst *scpi; | |
642 | ||
643 | devc = sdi->priv; | |
644 | scpi = sdi->conn; | |
645 | state = devc->model_state; | |
646 | model = devc->model_config; | |
647 | setup_changed = FALSE; | |
648 | ||
649 | pod_enabled = g_try_malloc0(sizeof(gboolean) * model->digital_pods); | |
650 | ||
651 | for (l = sdi->channels; l; l = l->next) { | |
652 | ch = l->data; | |
653 | switch (ch->type) { | |
654 | case SR_CHANNEL_ANALOG: | |
655 | if (ch->enabled == state->analog_channels[ch->index].state) | |
656 | break; | |
657 | g_snprintf(command, sizeof(command), | |
658 | (*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE], | |
659 | ch->index + 1, ch->enabled); | |
660 | ||
661 | if (sr_scpi_send(scpi, command) != SR_OK) | |
662 | return SR_ERR; | |
663 | state->analog_channels[ch->index].state = ch->enabled; | |
664 | setup_changed = TRUE; | |
665 | break; | |
666 | case SR_CHANNEL_LOGIC: | |
667 | /* | |
668 | * A digital POD needs to be enabled for every group of | |
669 | * 8 channels. | |
670 | */ | |
671 | if (ch->enabled) | |
672 | pod_enabled[ch->index < 8 ? 0 : 1] = TRUE; | |
673 | ||
674 | if (ch->enabled == state->digital_channels[ch->index]) | |
675 | break; | |
676 | g_snprintf(command, sizeof(command), | |
677 | (*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE], | |
678 | ch->index, ch->enabled); | |
679 | ||
680 | if (sr_scpi_send(scpi, command) != SR_OK) | |
681 | return SR_ERR; | |
682 | ||
683 | state->digital_channels[ch->index] = ch->enabled; | |
684 | setup_changed = TRUE; | |
685 | break; | |
686 | default: | |
687 | return SR_ERR; | |
688 | } | |
689 | } | |
690 | ||
691 | for (i = 1; i <= model->digital_pods; i++) { | |
692 | if (state->digital_pods[i - 1] == pod_enabled[i - 1]) | |
693 | continue; | |
694 | g_snprintf(command, sizeof(command), | |
695 | (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_STATE], | |
696 | i, pod_enabled[i - 1]); | |
697 | if (sr_scpi_send(scpi, command) != SR_OK) | |
698 | return SR_ERR; | |
699 | state->digital_pods[i - 1] = pod_enabled[i - 1]; | |
700 | setup_changed = TRUE; | |
701 | } | |
702 | ||
703 | g_free(pod_enabled); | |
704 | ||
705 | if (setup_changed && hmo_update_sample_rate(sdi) != SR_OK) | |
706 | return SR_ERR; | |
707 | ||
708 | return SR_OK; | |
709 | } | |
710 | ||
711 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
712 | { | |
713 | GSList *l; | |
714 | gboolean digital_added[MAX_DIGITAL_GROUP_COUNT]; | |
715 | size_t group, pod_count; | |
716 | struct sr_channel *ch; | |
717 | struct dev_context *devc; | |
718 | struct sr_scpi_dev_inst *scpi; | |
719 | int ret; | |
720 | ||
721 | scpi = sdi->conn; | |
722 | devc = sdi->priv; | |
723 | ||
724 | /* Preset empty results. */ | |
725 | for (group = 0; group < ARRAY_SIZE(digital_added); group++) | |
726 | digital_added[group] = FALSE; | |
727 | g_slist_free(devc->enabled_channels); | |
728 | devc->enabled_channels = NULL; | |
729 | ||
730 | /* | |
731 | * Contruct the list of enabled channels. Determine the highest | |
732 | * number of digital pods involved in the acquisition. | |
733 | */ | |
734 | pod_count = 0; | |
735 | for (l = sdi->channels; l; l = l->next) { | |
736 | ch = l->data; | |
737 | if (!ch->enabled) | |
738 | continue; | |
739 | /* Only add a single digital channel per group (pod). */ | |
740 | group = ch->index / 8; | |
741 | if (ch->type != SR_CHANNEL_LOGIC || !digital_added[group]) { | |
742 | devc->enabled_channels = g_slist_append( | |
743 | devc->enabled_channels, ch); | |
744 | if (ch->type == SR_CHANNEL_LOGIC) { | |
745 | digital_added[group] = TRUE; | |
746 | if (pod_count < group + 1) | |
747 | pod_count = group + 1; | |
748 | } | |
749 | } | |
750 | } | |
751 | if (!devc->enabled_channels) | |
752 | return SR_ERR; | |
753 | devc->pod_count = pod_count; | |
754 | devc->logic_data = NULL; | |
755 | ||
756 | /* | |
757 | * Check constraints. Some channels can be either analog or | |
758 | * digital, but not both at the same time. | |
759 | */ | |
760 | if (hmo_check_channels(devc->enabled_channels) != SR_OK) { | |
761 | sr_err("Invalid channel configuration specified!"); | |
762 | ret = SR_ERR_NA; | |
763 | goto free_enabled; | |
764 | } | |
765 | ||
766 | /* | |
767 | * Configure the analog and digital channels and the | |
768 | * corresponding digital pods. | |
769 | */ | |
770 | if (hmo_setup_channels(sdi) != SR_OK) { | |
771 | sr_err("Failed to setup channel configuration!"); | |
772 | ret = SR_ERR; | |
773 | goto free_enabled; | |
774 | } | |
775 | ||
776 | /* | |
777 | * Start acquisition on the first enabled channel. The | |
778 | * receive routine will continue driving the acquisition. | |
779 | */ | |
780 | sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50, | |
781 | hmo_receive_data, (void *)sdi); | |
782 | ||
783 | std_session_send_df_header(sdi); | |
784 | ||
785 | devc->current_channel = devc->enabled_channels; | |
786 | ||
787 | return hmo_request_data(sdi); | |
788 | ||
789 | free_enabled: | |
790 | g_slist_free(devc->enabled_channels); | |
791 | devc->enabled_channels = NULL; | |
792 | return ret; | |
793 | } | |
794 | ||
795 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
796 | { | |
797 | struct dev_context *devc; | |
798 | struct sr_scpi_dev_inst *scpi; | |
799 | ||
800 | std_session_send_df_end(sdi); | |
801 | ||
802 | devc = sdi->priv; | |
803 | ||
804 | devc->num_frames = 0; | |
805 | g_slist_free(devc->enabled_channels); | |
806 | devc->enabled_channels = NULL; | |
807 | scpi = sdi->conn; | |
808 | sr_scpi_source_remove(sdi->session, scpi); | |
809 | ||
810 | return SR_OK; | |
811 | } | |
812 | ||
813 | static struct sr_dev_driver hameg_hmo_driver_info = { | |
814 | .name = "hameg-hmo", | |
815 | .longname = "Hameg HMO", | |
816 | .api_version = 1, | |
817 | .init = std_init, | |
818 | .cleanup = std_cleanup, | |
819 | .scan = scan, | |
820 | .dev_list = std_dev_list, | |
821 | .dev_clear = dev_clear, | |
822 | .config_get = config_get, | |
823 | .config_set = config_set, | |
824 | .config_list = config_list, | |
825 | .dev_open = dev_open, | |
826 | .dev_close = dev_close, | |
827 | .dev_acquisition_start = dev_acquisition_start, | |
828 | .dev_acquisition_stop = dev_acquisition_stop, | |
829 | .context = NULL, | |
830 | }; | |
831 | SR_REGISTER_DEV_DRIVER(hameg_hmo_driver_info); |