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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 scanopts[] = { | |
35 | SR_CONF_CONN, | |
36 | SR_CONF_SERIALCOMM, | |
37 | }; | |
38 | ||
39 | static const uint32_t drvopts[] = { | |
40 | SR_CONF_OSCILLOSCOPE, | |
41 | }; | |
42 | ||
43 | enum { | |
44 | CG_INVALID = -1, | |
45 | CG_NONE, | |
46 | CG_ANALOG, | |
47 | CG_DIGITAL, | |
48 | }; | |
49 | ||
50 | static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi) | |
51 | { | |
52 | struct sr_dev_inst *sdi; | |
53 | struct dev_context *devc; | |
54 | struct sr_scpi_hw_info *hw_info; | |
55 | ||
56 | sdi = NULL; | |
57 | devc = NULL; | |
58 | hw_info = NULL; | |
59 | ||
60 | if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) { | |
61 | sr_info("Couldn't get IDN response."); | |
62 | goto fail; | |
63 | } | |
64 | ||
65 | if (std_str_idx_s(hw_info->manufacturer, ARRAY_AND_SIZE(manufacturers)) < 0) | |
66 | goto fail; | |
67 | ||
68 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
69 | sdi->vendor = g_strdup(hw_info->manufacturer); | |
70 | sdi->model = g_strdup(hw_info->model); | |
71 | sdi->version = g_strdup(hw_info->firmware_version); | |
72 | sdi->serial_num = g_strdup(hw_info->serial_number); | |
73 | sdi->driver = &hameg_hmo_driver_info; | |
74 | sdi->inst_type = SR_INST_SCPI; | |
75 | sdi->conn = scpi; | |
76 | ||
77 | sr_scpi_hw_info_free(hw_info); | |
78 | hw_info = NULL; | |
79 | ||
80 | devc = g_malloc0(sizeof(struct dev_context)); | |
81 | ||
82 | sdi->priv = devc; | |
83 | ||
84 | if (hmo_init_device(sdi) != SR_OK) | |
85 | goto fail; | |
86 | ||
87 | return sdi; | |
88 | ||
89 | fail: | |
90 | sr_scpi_hw_info_free(hw_info); | |
91 | sr_dev_inst_free(sdi); | |
92 | g_free(devc); | |
93 | ||
94 | return NULL; | |
95 | } | |
96 | ||
97 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
98 | { | |
99 | return sr_scpi_scan(di->context, options, probe_device); | |
100 | } | |
101 | ||
102 | static void clear_helper(struct dev_context *devc) | |
103 | { | |
104 | hmo_scope_state_free(devc->model_state); | |
105 | g_free(devc->analog_groups); | |
106 | g_free(devc->digital_groups); | |
107 | } | |
108 | ||
109 | static int dev_clear(const struct sr_dev_driver *di) | |
110 | { | |
111 | return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper); | |
112 | } | |
113 | ||
114 | static int dev_open(struct sr_dev_inst *sdi) | |
115 | { | |
116 | if (sr_scpi_open(sdi->conn) != SR_OK) | |
117 | return SR_ERR; | |
118 | ||
119 | if (hmo_scope_state_get(sdi) != SR_OK) | |
120 | return SR_ERR; | |
121 | ||
122 | return SR_OK; | |
123 | } | |
124 | ||
125 | static int dev_close(struct sr_dev_inst *sdi) | |
126 | { | |
127 | return sr_scpi_close(sdi->conn); | |
128 | } | |
129 | ||
130 | static int check_channel_group(struct dev_context *devc, | |
131 | const struct sr_channel_group *cg) | |
132 | { | |
133 | unsigned int i; | |
134 | const struct scope_config *model; | |
135 | ||
136 | model = devc->model_config; | |
137 | ||
138 | if (!cg) | |
139 | return CG_NONE; | |
140 | ||
141 | for (i = 0; i < model->analog_channels; i++) | |
142 | if (cg == devc->analog_groups[i]) | |
143 | return CG_ANALOG; | |
144 | ||
145 | for (i = 0; i < model->digital_pods; i++) | |
146 | if (cg == devc->digital_groups[i]) | |
147 | return CG_DIGITAL; | |
148 | ||
149 | sr_err("Invalid channel group specified."); | |
150 | ||
151 | return CG_INVALID; | |
152 | } | |
153 | ||
154 | static int config_get(uint32_t key, GVariant **data, | |
155 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
156 | { | |
157 | int cg_type; | |
158 | unsigned int i; | |
159 | struct dev_context *devc; | |
160 | const struct scope_config *model; | |
161 | struct scope_state *state; | |
162 | ||
163 | if (!sdi) | |
164 | return SR_ERR_ARG; | |
165 | ||
166 | devc = sdi->priv; | |
167 | ||
168 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
169 | return SR_ERR; | |
170 | ||
171 | model = devc->model_config; | |
172 | state = devc->model_state; | |
173 | ||
174 | switch (key) { | |
175 | case SR_CONF_NUM_HDIV: | |
176 | *data = g_variant_new_int32(model->num_xdivs); | |
177 | break; | |
178 | case SR_CONF_TIMEBASE: | |
179 | *data = g_variant_new("(tt)", (*model->timebases)[state->timebase][0], | |
180 | (*model->timebases)[state->timebase][1]); | |
181 | break; | |
182 | case SR_CONF_NUM_VDIV: | |
183 | if (cg_type == CG_NONE) { | |
184 | return SR_ERR_CHANNEL_GROUP; | |
185 | } else if (cg_type == CG_ANALOG) { | |
186 | for (i = 0; i < model->analog_channels; i++) { | |
187 | if (cg != devc->analog_groups[i]) | |
188 | continue; | |
189 | *data = g_variant_new_int32(model->num_ydivs); | |
190 | break; | |
191 | } | |
192 | } else { | |
193 | return SR_ERR_NA; | |
194 | } | |
195 | break; | |
196 | case SR_CONF_VDIV: | |
197 | if (cg_type == CG_NONE) { | |
198 | return SR_ERR_CHANNEL_GROUP; | |
199 | } else if (cg_type == CG_ANALOG) { | |
200 | for (i = 0; i < model->analog_channels; i++) { | |
201 | if (cg != devc->analog_groups[i]) | |
202 | continue; | |
203 | *data = g_variant_new("(tt)", | |
204 | (*model->vdivs)[state->analog_channels[i].vdiv][0], | |
205 | (*model->vdivs)[state->analog_channels[i].vdiv][1]); | |
206 | break; | |
207 | } | |
208 | } else { | |
209 | return SR_ERR_NA; | |
210 | } | |
211 | break; | |
212 | case SR_CONF_TRIGGER_SOURCE: | |
213 | *data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]); | |
214 | break; | |
215 | case SR_CONF_TRIGGER_SLOPE: | |
216 | *data = g_variant_new_string((*model->trigger_slopes)[state->trigger_slope]); | |
217 | break; | |
218 | case SR_CONF_HORIZ_TRIGGERPOS: | |
219 | *data = g_variant_new_double(state->horiz_triggerpos); | |
220 | break; | |
221 | case SR_CONF_COUPLING: | |
222 | if (cg_type == CG_NONE) { | |
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_string((*model->coupling_options)[state->analog_channels[i].coupling]); | |
229 | break; | |
230 | } | |
231 | } else { | |
232 | return SR_ERR_NA; | |
233 | } | |
234 | break; | |
235 | case SR_CONF_SAMPLERATE: | |
236 | *data = g_variant_new_uint64(state->sample_rate); | |
237 | break; | |
238 | default: | |
239 | return SR_ERR_NA; | |
240 | } | |
241 | ||
242 | return SR_OK; | |
243 | } | |
244 | ||
245 | static int config_set(uint32_t key, GVariant *data, | |
246 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
247 | { | |
248 | int ret, cg_type, idx; | |
249 | unsigned int i, j; | |
250 | char command[MAX_COMMAND_SIZE], float_str[30]; | |
251 | struct dev_context *devc; | |
252 | const struct scope_config *model; | |
253 | struct scope_state *state; | |
254 | const char *tmp; | |
255 | double tmp_d; | |
256 | gboolean update_sample_rate; | |
257 | ||
258 | if (!sdi) | |
259 | return SR_ERR_ARG; | |
260 | ||
261 | devc = sdi->priv; | |
262 | ||
263 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
264 | return SR_ERR; | |
265 | ||
266 | model = devc->model_config; | |
267 | state = devc->model_state; | |
268 | update_sample_rate = FALSE; | |
269 | ||
270 | ret = SR_ERR_NA; | |
271 | ||
272 | switch (key) { | |
273 | case SR_CONF_LIMIT_FRAMES: | |
274 | devc->frame_limit = g_variant_get_uint64(data); | |
275 | ret = SR_OK; | |
276 | break; | |
277 | case SR_CONF_TRIGGER_SOURCE: | |
278 | tmp = g_variant_get_string(data, NULL); | |
279 | for (i = 0; i < model->num_trigger_sources; i++) { | |
280 | if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0) | |
281 | continue; | |
282 | state->trigger_source = i; | |
283 | g_snprintf(command, sizeof(command), | |
284 | (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE], | |
285 | (*model->trigger_sources)[i]); | |
286 | ||
287 | ret = sr_scpi_send(sdi->conn, command); | |
288 | break; | |
289 | } | |
290 | break; | |
291 | case SR_CONF_VDIV: | |
292 | if (cg_type == CG_NONE) | |
293 | return SR_ERR_CHANNEL_GROUP; | |
294 | if ((idx = std_u64_tuple_idx(data, *model->vdivs, model->num_vdivs)) < 0) | |
295 | return SR_ERR_ARG; | |
296 | for (j = 1; j <= model->analog_channels; j++) { | |
297 | if (cg != devc->analog_groups[j - 1]) | |
298 | continue; | |
299 | state->analog_channels[j - 1].vdiv = idx; | |
300 | g_ascii_formatd(float_str, sizeof(float_str), "%E", | |
301 | (float) (*model->vdivs)[idx][0] / (*model->vdivs)[idx][1]); | |
302 | g_snprintf(command, sizeof(command), | |
303 | (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV], | |
304 | j, float_str); | |
305 | if (sr_scpi_send(sdi->conn, command) != SR_OK || | |
306 | sr_scpi_get_opc(sdi->conn) != SR_OK) | |
307 | return SR_ERR; | |
308 | break; | |
309 | } | |
310 | ret = SR_OK; | |
311 | break; | |
312 | case SR_CONF_TIMEBASE: | |
313 | if ((idx = std_u64_tuple_idx(data, *model->timebases, model->num_timebases)) < 0) | |
314 | return SR_ERR_ARG; | |
315 | state->timebase = idx; | |
316 | g_ascii_formatd(float_str, sizeof(float_str), "%E", | |
317 | (float) (*model->timebases)[idx][0] / (*model->timebases)[idx][1]); | |
318 | g_snprintf(command, sizeof(command), | |
319 | (*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE], | |
320 | float_str); | |
321 | ret = sr_scpi_send(sdi->conn, command); | |
322 | update_sample_rate = TRUE; | |
323 | break; | |
324 | case SR_CONF_HORIZ_TRIGGERPOS: | |
325 | tmp_d = g_variant_get_double(data); | |
326 | ||
327 | if (tmp_d < 0.0 || tmp_d > 1.0) | |
328 | return SR_ERR; | |
329 | ||
330 | state->horiz_triggerpos = tmp_d; | |
331 | tmp_d = -(tmp_d - 0.5) * | |
332 | ((double) (*model->timebases)[state->timebase][0] / | |
333 | (*model->timebases)[state->timebase][1]) | |
334 | * model->num_xdivs; | |
335 | ||
336 | g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d); | |
337 | g_snprintf(command, sizeof(command), | |
338 | (*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS], | |
339 | float_str); | |
340 | ||
341 | ret = sr_scpi_send(sdi->conn, command); | |
342 | break; | |
343 | case SR_CONF_TRIGGER_SLOPE: | |
344 | tmp = g_variant_get_string(data, NULL); | |
345 | for (i = 0; i < model->num_trigger_slopes; i++) { | |
346 | if (g_strcmp0(tmp, (*model->trigger_slopes)[i]) != 0) | |
347 | continue; | |
348 | state->trigger_slope = i; | |
349 | g_snprintf(command, sizeof(command), | |
350 | (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE], | |
351 | (*model->trigger_slopes)[i]); | |
352 | ||
353 | ret = sr_scpi_send(sdi->conn, command); | |
354 | break; | |
355 | } | |
356 | break; | |
357 | case SR_CONF_COUPLING: | |
358 | if (cg_type == CG_NONE) | |
359 | return SR_ERR_CHANNEL_GROUP; | |
360 | ||
361 | tmp = g_variant_get_string(data, NULL); | |
362 | ||
363 | for (i = 0; i < model->num_coupling_options; i++) { | |
364 | if (strcmp(tmp, (*model->coupling_options)[i]) != 0) | |
365 | continue; | |
366 | for (j = 1; j <= model->analog_channels; j++) { | |
367 | if (cg != devc->analog_groups[j - 1]) | |
368 | continue; | |
369 | state->analog_channels[j-1].coupling = i; | |
370 | ||
371 | g_snprintf(command, sizeof(command), | |
372 | (*model->scpi_dialect)[SCPI_CMD_SET_COUPLING], | |
373 | j, tmp); | |
374 | ||
375 | if (sr_scpi_send(sdi->conn, command) != SR_OK || | |
376 | sr_scpi_get_opc(sdi->conn) != SR_OK) | |
377 | return SR_ERR; | |
378 | break; | |
379 | } | |
380 | ||
381 | ret = SR_OK; | |
382 | break; | |
383 | } | |
384 | break; | |
385 | default: | |
386 | ret = SR_ERR_NA; | |
387 | break; | |
388 | } | |
389 | ||
390 | if (ret == SR_OK) | |
391 | ret = sr_scpi_get_opc(sdi->conn); | |
392 | ||
393 | if (ret == SR_OK && update_sample_rate) | |
394 | ret = hmo_update_sample_rate(sdi); | |
395 | ||
396 | return ret; | |
397 | } | |
398 | ||
399 | static int config_list(uint32_t key, GVariant **data, | |
400 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
401 | { | |
402 | int cg_type = CG_NONE; | |
403 | struct dev_context *devc = NULL; | |
404 | const struct scope_config *model = NULL; | |
405 | ||
406 | if (sdi) { | |
407 | devc = sdi->priv; | |
408 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
409 | return SR_ERR; | |
410 | ||
411 | model = devc->model_config; | |
412 | } | |
413 | ||
414 | switch (key) { | |
415 | case SR_CONF_SCAN_OPTIONS: | |
416 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(scanopts)); | |
417 | break; | |
418 | case SR_CONF_DEVICE_OPTIONS: | |
419 | if (cg_type == CG_NONE) { | |
420 | if (model) | |
421 | *data = std_gvar_array_u32((const uint32_t *)model->devopts, model->num_devopts); | |
422 | else | |
423 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(drvopts)); | |
424 | } else if (cg_type == CG_ANALOG) { | |
425 | *data = std_gvar_array_u32((const uint32_t *)model->devopts_cg_analog, model->num_devopts_cg_analog); | |
426 | } else { | |
427 | *data = std_gvar_array_u32(NULL, 0); | |
428 | } | |
429 | break; | |
430 | case SR_CONF_COUPLING: | |
431 | if (cg_type == CG_NONE) | |
432 | return SR_ERR_CHANNEL_GROUP; | |
433 | *data = g_variant_new_strv(*model->coupling_options, model->num_coupling_options); | |
434 | break; | |
435 | case SR_CONF_TRIGGER_SOURCE: | |
436 | if (!model) | |
437 | return SR_ERR_ARG; | |
438 | *data = g_variant_new_strv(*model->trigger_sources, model->num_trigger_sources); | |
439 | break; | |
440 | case SR_CONF_TRIGGER_SLOPE: | |
441 | if (!model) | |
442 | return SR_ERR_ARG; | |
443 | *data = g_variant_new_strv(*model->trigger_slopes, model->num_trigger_slopes); | |
444 | break; | |
445 | case SR_CONF_TIMEBASE: | |
446 | if (!model) | |
447 | return SR_ERR_ARG; | |
448 | *data = std_gvar_tuple_array(*model->timebases, model->num_timebases); | |
449 | break; | |
450 | case SR_CONF_VDIV: | |
451 | if (cg_type == CG_NONE) | |
452 | return SR_ERR_CHANNEL_GROUP; | |
453 | *data = std_gvar_tuple_array(*model->vdivs, model->num_vdivs); | |
454 | break; | |
455 | default: | |
456 | return SR_ERR_NA; | |
457 | } | |
458 | ||
459 | return SR_OK; | |
460 | } | |
461 | ||
462 | SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi) | |
463 | { | |
464 | char command[MAX_COMMAND_SIZE]; | |
465 | struct sr_channel *ch; | |
466 | struct dev_context *devc; | |
467 | const struct scope_config *model; | |
468 | ||
469 | devc = sdi->priv; | |
470 | model = devc->model_config; | |
471 | ||
472 | ch = devc->current_channel->data; | |
473 | ||
474 | switch (ch->type) { | |
475 | case SR_CHANNEL_ANALOG: | |
476 | g_snprintf(command, sizeof(command), | |
477 | (*model->scpi_dialect)[SCPI_CMD_GET_ANALOG_DATA], | |
478 | #ifdef WORDS_BIGENDIAN | |
479 | "MSBF", | |
480 | #else | |
481 | "LSBF", | |
482 | #endif | |
483 | ch->index + 1); | |
484 | break; | |
485 | case SR_CHANNEL_LOGIC: | |
486 | g_snprintf(command, sizeof(command), | |
487 | (*model->scpi_dialect)[SCPI_CMD_GET_DIG_DATA], | |
488 | ch->index < 8 ? 1 : 2); | |
489 | break; | |
490 | default: | |
491 | sr_err("Invalid channel type."); | |
492 | break; | |
493 | } | |
494 | ||
495 | return sr_scpi_send(sdi->conn, command); | |
496 | } | |
497 | ||
498 | static int hmo_check_channels(GSList *channels) | |
499 | { | |
500 | GSList *l; | |
501 | struct sr_channel *ch; | |
502 | gboolean enabled_chan[MAX_ANALOG_CHANNEL_COUNT]; | |
503 | gboolean enabled_pod[MAX_DIGITAL_GROUP_COUNT]; | |
504 | size_t idx; | |
505 | ||
506 | /* Preset "not enabled" for all channels / pods. */ | |
507 | for (idx = 0; idx < ARRAY_SIZE(enabled_chan); idx++) | |
508 | enabled_chan[idx] = FALSE; | |
509 | for (idx = 0; idx < ARRAY_SIZE(enabled_pod); idx++) | |
510 | enabled_pod[idx] = FALSE; | |
511 | ||
512 | /* | |
513 | * Determine which channels / pods are required for the caller's | |
514 | * specified configuration. | |
515 | */ | |
516 | for (l = channels; l; l = l->next) { | |
517 | ch = l->data; | |
518 | switch (ch->type) { | |
519 | case SR_CHANNEL_ANALOG: | |
520 | idx = ch->index; | |
521 | if (idx < ARRAY_SIZE(enabled_chan)) | |
522 | enabled_chan[idx] = TRUE; | |
523 | break; | |
524 | case SR_CHANNEL_LOGIC: | |
525 | idx = ch->index / 8; | |
526 | if (idx < ARRAY_SIZE(enabled_pod)) | |
527 | enabled_pod[idx] = TRUE; | |
528 | break; | |
529 | default: | |
530 | return SR_ERR; | |
531 | } | |
532 | } | |
533 | ||
534 | /* | |
535 | * Check for resource conflicts. Some channels can be either | |
536 | * analog or digital, but never both at the same time. | |
537 | * | |
538 | * Note that the constraints might depend on the specific model. | |
539 | * These tests might need some adjustment when support for more | |
540 | * models gets added to the driver. | |
541 | */ | |
542 | if (enabled_pod[0] && enabled_chan[2]) | |
543 | return SR_ERR; | |
544 | if (enabled_pod[1] && enabled_chan[3]) | |
545 | return SR_ERR; | |
546 | return SR_OK; | |
547 | } | |
548 | ||
549 | static int hmo_setup_channels(const struct sr_dev_inst *sdi) | |
550 | { | |
551 | GSList *l; | |
552 | unsigned int i; | |
553 | gboolean *pod_enabled, setup_changed; | |
554 | char command[MAX_COMMAND_SIZE]; | |
555 | struct scope_state *state; | |
556 | const struct scope_config *model; | |
557 | struct sr_channel *ch; | |
558 | struct dev_context *devc; | |
559 | struct sr_scpi_dev_inst *scpi; | |
560 | ||
561 | devc = sdi->priv; | |
562 | scpi = sdi->conn; | |
563 | state = devc->model_state; | |
564 | model = devc->model_config; | |
565 | setup_changed = FALSE; | |
566 | ||
567 | pod_enabled = g_try_malloc0(sizeof(gboolean) * model->digital_pods); | |
568 | ||
569 | for (l = sdi->channels; l; l = l->next) { | |
570 | ch = l->data; | |
571 | switch (ch->type) { | |
572 | case SR_CHANNEL_ANALOG: | |
573 | if (ch->enabled == state->analog_channels[ch->index].state) | |
574 | break; | |
575 | g_snprintf(command, sizeof(command), | |
576 | (*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE], | |
577 | ch->index + 1, ch->enabled); | |
578 | ||
579 | if (sr_scpi_send(scpi, command) != SR_OK) | |
580 | return SR_ERR; | |
581 | state->analog_channels[ch->index].state = ch->enabled; | |
582 | setup_changed = TRUE; | |
583 | break; | |
584 | case SR_CHANNEL_LOGIC: | |
585 | /* | |
586 | * A digital POD needs to be enabled for every group of | |
587 | * 8 channels. | |
588 | */ | |
589 | if (ch->enabled) | |
590 | pod_enabled[ch->index < 8 ? 0 : 1] = TRUE; | |
591 | ||
592 | if (ch->enabled == state->digital_channels[ch->index]) | |
593 | break; | |
594 | g_snprintf(command, sizeof(command), | |
595 | (*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE], | |
596 | ch->index, ch->enabled); | |
597 | ||
598 | if (sr_scpi_send(scpi, command) != SR_OK) | |
599 | return SR_ERR; | |
600 | ||
601 | state->digital_channels[ch->index] = ch->enabled; | |
602 | setup_changed = TRUE; | |
603 | break; | |
604 | default: | |
605 | return SR_ERR; | |
606 | } | |
607 | } | |
608 | ||
609 | for (i = 1; i <= model->digital_pods; i++) { | |
610 | if (state->digital_pods[i - 1] == pod_enabled[i - 1]) | |
611 | continue; | |
612 | g_snprintf(command, sizeof(command), | |
613 | (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_STATE], | |
614 | i, pod_enabled[i - 1]); | |
615 | if (sr_scpi_send(scpi, command) != SR_OK) | |
616 | return SR_ERR; | |
617 | state->digital_pods[i - 1] = pod_enabled[i - 1]; | |
618 | setup_changed = TRUE; | |
619 | } | |
620 | ||
621 | g_free(pod_enabled); | |
622 | ||
623 | if (setup_changed && hmo_update_sample_rate(sdi) != SR_OK) | |
624 | return SR_ERR; | |
625 | ||
626 | return SR_OK; | |
627 | } | |
628 | ||
629 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
630 | { | |
631 | GSList *l; | |
632 | gboolean digital_added[MAX_DIGITAL_GROUP_COUNT]; | |
633 | size_t group, pod_count; | |
634 | struct sr_channel *ch; | |
635 | struct dev_context *devc; | |
636 | struct sr_scpi_dev_inst *scpi; | |
637 | int ret; | |
638 | ||
639 | scpi = sdi->conn; | |
640 | devc = sdi->priv; | |
641 | ||
642 | /* Preset empty results. */ | |
643 | for (group = 0; group < ARRAY_SIZE(digital_added); group++) | |
644 | digital_added[group] = FALSE; | |
645 | g_slist_free(devc->enabled_channels); | |
646 | devc->enabled_channels = NULL; | |
647 | ||
648 | /* | |
649 | * Contruct the list of enabled channels. Determine the highest | |
650 | * number of digital pods involved in the acquisition. | |
651 | */ | |
652 | pod_count = 0; | |
653 | for (l = sdi->channels; l; l = l->next) { | |
654 | ch = l->data; | |
655 | if (!ch->enabled) | |
656 | continue; | |
657 | /* Only add a single digital channel per group (pod). */ | |
658 | group = ch->index / 8; | |
659 | if (ch->type != SR_CHANNEL_LOGIC || !digital_added[group]) { | |
660 | devc->enabled_channels = g_slist_append( | |
661 | devc->enabled_channels, ch); | |
662 | if (ch->type == SR_CHANNEL_LOGIC) { | |
663 | digital_added[group] = TRUE; | |
664 | if (pod_count < group + 1) | |
665 | pod_count = group + 1; | |
666 | } | |
667 | } | |
668 | } | |
669 | if (!devc->enabled_channels) | |
670 | return SR_ERR; | |
671 | devc->pod_count = pod_count; | |
672 | devc->logic_data = NULL; | |
673 | ||
674 | /* | |
675 | * Check constraints. Some channels can be either analog or | |
676 | * digital, but not both at the same time. | |
677 | */ | |
678 | if (hmo_check_channels(devc->enabled_channels) != SR_OK) { | |
679 | sr_err("Invalid channel configuration specified!"); | |
680 | ret = SR_ERR_NA; | |
681 | goto free_enabled; | |
682 | } | |
683 | ||
684 | /* | |
685 | * Configure the analog and digital channels and the | |
686 | * corresponding digital pods. | |
687 | */ | |
688 | if (hmo_setup_channels(sdi) != SR_OK) { | |
689 | sr_err("Failed to setup channel configuration!"); | |
690 | ret = SR_ERR; | |
691 | goto free_enabled; | |
692 | } | |
693 | ||
694 | /* | |
695 | * Start acquisition on the first enabled channel. The | |
696 | * receive routine will continue driving the acquisition. | |
697 | */ | |
698 | sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50, | |
699 | hmo_receive_data, (void *)sdi); | |
700 | ||
701 | std_session_send_df_header(sdi); | |
702 | ||
703 | devc->current_channel = devc->enabled_channels; | |
704 | ||
705 | return hmo_request_data(sdi); | |
706 | ||
707 | free_enabled: | |
708 | g_slist_free(devc->enabled_channels); | |
709 | devc->enabled_channels = NULL; | |
710 | return ret; | |
711 | } | |
712 | ||
713 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
714 | { | |
715 | struct dev_context *devc; | |
716 | struct sr_scpi_dev_inst *scpi; | |
717 | ||
718 | std_session_send_df_end(sdi); | |
719 | ||
720 | devc = sdi->priv; | |
721 | ||
722 | devc->num_frames = 0; | |
723 | g_slist_free(devc->enabled_channels); | |
724 | devc->enabled_channels = NULL; | |
725 | scpi = sdi->conn; | |
726 | sr_scpi_source_remove(sdi->session, scpi); | |
727 | ||
728 | return SR_OK; | |
729 | } | |
730 | ||
731 | static struct sr_dev_driver hameg_hmo_driver_info = { | |
732 | .name = "hameg-hmo", | |
733 | .longname = "Hameg HMO", | |
734 | .api_version = 1, | |
735 | .init = std_init, | |
736 | .cleanup = std_cleanup, | |
737 | .scan = scan, | |
738 | .dev_list = std_dev_list, | |
739 | .dev_clear = dev_clear, | |
740 | .config_get = config_get, | |
741 | .config_set = config_set, | |
742 | .config_list = config_list, | |
743 | .dev_open = dev_open, | |
744 | .dev_close = dev_close, | |
745 | .dev_acquisition_start = dev_acquisition_start, | |
746 | .dev_acquisition_stop = dev_acquisition_stop, | |
747 | .context = NULL, | |
748 | }; | |
749 | SR_REGISTER_DEV_DRIVER(hameg_hmo_driver_info); |