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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 | const struct scope_config *model; | |
134 | ||
135 | model = devc->model_config; | |
136 | ||
137 | if (!cg) | |
138 | return CG_NONE; | |
139 | ||
140 | if (std_cg_idx(cg, devc->analog_groups, model->analog_channels) >= 0) | |
141 | return CG_ANALOG; | |
142 | ||
143 | if (std_cg_idx(cg, devc->digital_groups, model->digital_pods) >= 0) | |
144 | return CG_DIGITAL; | |
145 | ||
146 | sr_err("Invalid channel group specified."); | |
147 | ||
148 | return CG_INVALID; | |
149 | } | |
150 | ||
151 | static int config_get(uint32_t key, GVariant **data, | |
152 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
153 | { | |
154 | int cg_type, idx; | |
155 | struct dev_context *devc; | |
156 | const struct scope_config *model; | |
157 | struct scope_state *state; | |
158 | ||
159 | if (!sdi) | |
160 | return SR_ERR_ARG; | |
161 | ||
162 | devc = sdi->priv; | |
163 | ||
164 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
165 | return SR_ERR; | |
166 | ||
167 | model = devc->model_config; | |
168 | state = devc->model_state; | |
169 | ||
170 | switch (key) { | |
171 | case SR_CONF_NUM_HDIV: | |
172 | *data = g_variant_new_int32(model->num_xdivs); | |
173 | break; | |
174 | case SR_CONF_TIMEBASE: | |
175 | *data = g_variant_new("(tt)", (*model->timebases)[state->timebase][0], | |
176 | (*model->timebases)[state->timebase][1]); | |
177 | break; | |
178 | case SR_CONF_NUM_VDIV: | |
179 | if (!cg) | |
180 | return SR_ERR_CHANNEL_GROUP; | |
181 | if (cg_type != CG_ANALOG) | |
182 | return SR_ERR_NA; | |
183 | if (std_cg_idx(cg, devc->analog_groups, model->analog_channels) < 0) | |
184 | return SR_ERR_ARG; | |
185 | *data = g_variant_new_int32(model->num_ydivs); | |
186 | break; | |
187 | case SR_CONF_VDIV: | |
188 | if (!cg) | |
189 | return SR_ERR_CHANNEL_GROUP; | |
190 | if (cg_type != CG_ANALOG) | |
191 | return SR_ERR_NA; | |
192 | if ((idx = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0) | |
193 | return SR_ERR_ARG; | |
194 | *data = g_variant_new("(tt)", | |
195 | (*model->vdivs)[state->analog_channels[idx].vdiv][0], | |
196 | (*model->vdivs)[state->analog_channels[idx].vdiv][1]); | |
197 | break; | |
198 | case SR_CONF_TRIGGER_SOURCE: | |
199 | *data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]); | |
200 | break; | |
201 | case SR_CONF_TRIGGER_SLOPE: | |
202 | *data = g_variant_new_string((*model->trigger_slopes)[state->trigger_slope]); | |
203 | break; | |
204 | case SR_CONF_HORIZ_TRIGGERPOS: | |
205 | *data = g_variant_new_double(state->horiz_triggerpos); | |
206 | break; | |
207 | case SR_CONF_COUPLING: | |
208 | if (!cg) | |
209 | return SR_ERR_CHANNEL_GROUP; | |
210 | if (cg_type != CG_ANALOG) | |
211 | return SR_ERR_NA; | |
212 | if ((idx = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0) | |
213 | return SR_ERR_ARG; | |
214 | *data = g_variant_new_string((*model->coupling_options)[state->analog_channels[idx].coupling]); | |
215 | break; | |
216 | case SR_CONF_SAMPLERATE: | |
217 | *data = g_variant_new_uint64(state->sample_rate); | |
218 | break; | |
219 | default: | |
220 | return SR_ERR_NA; | |
221 | } | |
222 | ||
223 | return SR_OK; | |
224 | } | |
225 | ||
226 | static int config_set(uint32_t key, GVariant *data, | |
227 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
228 | { | |
229 | int ret, cg_type, idx, j; | |
230 | char command[MAX_COMMAND_SIZE], float_str[30]; | |
231 | struct dev_context *devc; | |
232 | const struct scope_config *model; | |
233 | struct scope_state *state; | |
234 | double tmp_d; | |
235 | gboolean update_sample_rate; | |
236 | ||
237 | if (!sdi) | |
238 | return SR_ERR_ARG; | |
239 | ||
240 | devc = sdi->priv; | |
241 | ||
242 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
243 | return SR_ERR; | |
244 | ||
245 | model = devc->model_config; | |
246 | state = devc->model_state; | |
247 | update_sample_rate = FALSE; | |
248 | ||
249 | switch (key) { | |
250 | case SR_CONF_LIMIT_FRAMES: | |
251 | devc->frame_limit = g_variant_get_uint64(data); | |
252 | ret = SR_OK; | |
253 | break; | |
254 | case SR_CONF_TRIGGER_SOURCE: | |
255 | if ((idx = std_str_idx(data, *model->trigger_sources, model->num_trigger_sources)) < 0) | |
256 | return SR_ERR_ARG; | |
257 | state->trigger_source = idx; | |
258 | g_snprintf(command, sizeof(command), | |
259 | (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE], | |
260 | (*model->trigger_sources)[idx]); | |
261 | ret = sr_scpi_send(sdi->conn, command); | |
262 | break; | |
263 | case SR_CONF_VDIV: | |
264 | if (!cg) | |
265 | return SR_ERR_CHANNEL_GROUP; | |
266 | if ((idx = std_u64_tuple_idx(data, *model->vdivs, model->num_vdivs)) < 0) | |
267 | return SR_ERR_ARG; | |
268 | if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0) | |
269 | return SR_ERR_ARG; | |
270 | state->analog_channels[j].vdiv = idx; | |
271 | g_ascii_formatd(float_str, sizeof(float_str), "%E", | |
272 | (float) (*model->vdivs)[idx][0] / (*model->vdivs)[idx][1]); | |
273 | g_snprintf(command, sizeof(command), | |
274 | (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV], | |
275 | j + 1, float_str); | |
276 | if (sr_scpi_send(sdi->conn, command) != SR_OK || | |
277 | sr_scpi_get_opc(sdi->conn) != SR_OK) | |
278 | return SR_ERR; | |
279 | ret = SR_OK; | |
280 | break; | |
281 | case SR_CONF_TIMEBASE: | |
282 | if ((idx = std_u64_tuple_idx(data, *model->timebases, model->num_timebases)) < 0) | |
283 | return SR_ERR_ARG; | |
284 | state->timebase = idx; | |
285 | g_ascii_formatd(float_str, sizeof(float_str), "%E", | |
286 | (float) (*model->timebases)[idx][0] / (*model->timebases)[idx][1]); | |
287 | g_snprintf(command, sizeof(command), | |
288 | (*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE], | |
289 | float_str); | |
290 | ret = sr_scpi_send(sdi->conn, command); | |
291 | update_sample_rate = TRUE; | |
292 | break; | |
293 | case SR_CONF_HORIZ_TRIGGERPOS: | |
294 | tmp_d = g_variant_get_double(data); | |
295 | if (tmp_d < 0.0 || tmp_d > 1.0) | |
296 | return SR_ERR; | |
297 | state->horiz_triggerpos = tmp_d; | |
298 | tmp_d = -(tmp_d - 0.5) * | |
299 | ((double) (*model->timebases)[state->timebase][0] / | |
300 | (*model->timebases)[state->timebase][1]) | |
301 | * model->num_xdivs; | |
302 | g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d); | |
303 | g_snprintf(command, sizeof(command), | |
304 | (*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS], | |
305 | float_str); | |
306 | ret = sr_scpi_send(sdi->conn, command); | |
307 | break; | |
308 | case SR_CONF_TRIGGER_SLOPE: | |
309 | if ((idx = std_str_idx(data, *model->trigger_slopes, model->num_trigger_slopes)) < 0) | |
310 | return SR_ERR_ARG; | |
311 | state->trigger_slope = idx; | |
312 | g_snprintf(command, sizeof(command), | |
313 | (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE], | |
314 | (*model->trigger_slopes)[idx]); | |
315 | ret = sr_scpi_send(sdi->conn, command); | |
316 | break; | |
317 | case SR_CONF_COUPLING: | |
318 | if (!cg) | |
319 | return SR_ERR_CHANNEL_GROUP; | |
320 | if ((idx = std_str_idx(data, *model->coupling_options, model->num_coupling_options)) < 0) | |
321 | return SR_ERR_ARG; | |
322 | if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0) | |
323 | return SR_ERR_ARG; | |
324 | state->analog_channels[j].coupling = idx; | |
325 | g_snprintf(command, sizeof(command), | |
326 | (*model->scpi_dialect)[SCPI_CMD_SET_COUPLING], | |
327 | j + 1, (*model->coupling_options)[idx]); | |
328 | if (sr_scpi_send(sdi->conn, command) != SR_OK || | |
329 | sr_scpi_get_opc(sdi->conn) != SR_OK) | |
330 | return SR_ERR; | |
331 | ret = SR_OK; | |
332 | break; | |
333 | default: | |
334 | ret = SR_ERR_NA; | |
335 | break; | |
336 | } | |
337 | ||
338 | if (ret == SR_OK) | |
339 | ret = sr_scpi_get_opc(sdi->conn); | |
340 | ||
341 | if (ret == SR_OK && update_sample_rate) | |
342 | ret = hmo_update_sample_rate(sdi); | |
343 | ||
344 | return ret; | |
345 | } | |
346 | ||
347 | static int config_list(uint32_t key, GVariant **data, | |
348 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
349 | { | |
350 | int cg_type = CG_NONE; | |
351 | struct dev_context *devc = NULL; | |
352 | const struct scope_config *model = NULL; | |
353 | ||
354 | if (sdi) { | |
355 | devc = sdi->priv; | |
356 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
357 | return SR_ERR; | |
358 | ||
359 | model = devc->model_config; | |
360 | } | |
361 | ||
362 | switch (key) { | |
363 | case SR_CONF_SCAN_OPTIONS: | |
364 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(scanopts)); | |
365 | break; | |
366 | case SR_CONF_DEVICE_OPTIONS: | |
367 | if (!cg) { | |
368 | if (model) | |
369 | *data = std_gvar_array_u32((const uint32_t *)model->devopts, model->num_devopts); | |
370 | else | |
371 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(drvopts)); | |
372 | } else if (cg_type == CG_ANALOG) { | |
373 | *data = std_gvar_array_u32((const uint32_t *)model->devopts_cg_analog, model->num_devopts_cg_analog); | |
374 | } else { | |
375 | *data = std_gvar_array_u32(NULL, 0); | |
376 | } | |
377 | break; | |
378 | case SR_CONF_COUPLING: | |
379 | if (!cg) | |
380 | return SR_ERR_CHANNEL_GROUP; | |
381 | if (!model) | |
382 | return SR_ERR_ARG; | |
383 | *data = g_variant_new_strv(*model->coupling_options, model->num_coupling_options); | |
384 | break; | |
385 | case SR_CONF_TRIGGER_SOURCE: | |
386 | if (!model) | |
387 | return SR_ERR_ARG; | |
388 | *data = g_variant_new_strv(*model->trigger_sources, model->num_trigger_sources); | |
389 | break; | |
390 | case SR_CONF_TRIGGER_SLOPE: | |
391 | if (!model) | |
392 | return SR_ERR_ARG; | |
393 | *data = g_variant_new_strv(*model->trigger_slopes, model->num_trigger_slopes); | |
394 | break; | |
395 | case SR_CONF_TIMEBASE: | |
396 | if (!model) | |
397 | return SR_ERR_ARG; | |
398 | *data = std_gvar_tuple_array(*model->timebases, model->num_timebases); | |
399 | break; | |
400 | case SR_CONF_VDIV: | |
401 | if (!cg) | |
402 | return SR_ERR_CHANNEL_GROUP; | |
403 | if (!model) | |
404 | return SR_ERR_ARG; | |
405 | *data = std_gvar_tuple_array(*model->vdivs, model->num_vdivs); | |
406 | break; | |
407 | default: | |
408 | return SR_ERR_NA; | |
409 | } | |
410 | ||
411 | return SR_OK; | |
412 | } | |
413 | ||
414 | SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi) | |
415 | { | |
416 | char command[MAX_COMMAND_SIZE]; | |
417 | struct sr_channel *ch; | |
418 | struct dev_context *devc; | |
419 | const struct scope_config *model; | |
420 | ||
421 | devc = sdi->priv; | |
422 | model = devc->model_config; | |
423 | ||
424 | ch = devc->current_channel->data; | |
425 | ||
426 | switch (ch->type) { | |
427 | case SR_CHANNEL_ANALOG: | |
428 | g_snprintf(command, sizeof(command), | |
429 | (*model->scpi_dialect)[SCPI_CMD_GET_ANALOG_DATA], | |
430 | #ifdef WORDS_BIGENDIAN | |
431 | "MSBF", | |
432 | #else | |
433 | "LSBF", | |
434 | #endif | |
435 | ch->index + 1); | |
436 | break; | |
437 | case SR_CHANNEL_LOGIC: | |
438 | g_snprintf(command, sizeof(command), | |
439 | (*model->scpi_dialect)[SCPI_CMD_GET_DIG_DATA], | |
440 | ch->index < 8 ? 1 : 2); | |
441 | break; | |
442 | default: | |
443 | sr_err("Invalid channel type."); | |
444 | break; | |
445 | } | |
446 | ||
447 | return sr_scpi_send(sdi->conn, command); | |
448 | } | |
449 | ||
450 | static int hmo_check_channels(GSList *channels) | |
451 | { | |
452 | GSList *l; | |
453 | struct sr_channel *ch; | |
454 | gboolean enabled_chan[MAX_ANALOG_CHANNEL_COUNT]; | |
455 | gboolean enabled_pod[MAX_DIGITAL_GROUP_COUNT]; | |
456 | size_t idx; | |
457 | ||
458 | /* Preset "not enabled" for all channels / pods. */ | |
459 | for (idx = 0; idx < ARRAY_SIZE(enabled_chan); idx++) | |
460 | enabled_chan[idx] = FALSE; | |
461 | for (idx = 0; idx < ARRAY_SIZE(enabled_pod); idx++) | |
462 | enabled_pod[idx] = FALSE; | |
463 | ||
464 | /* | |
465 | * Determine which channels / pods are required for the caller's | |
466 | * specified configuration. | |
467 | */ | |
468 | for (l = channels; l; l = l->next) { | |
469 | ch = l->data; | |
470 | switch (ch->type) { | |
471 | case SR_CHANNEL_ANALOG: | |
472 | idx = ch->index; | |
473 | if (idx < ARRAY_SIZE(enabled_chan)) | |
474 | enabled_chan[idx] = TRUE; | |
475 | break; | |
476 | case SR_CHANNEL_LOGIC: | |
477 | idx = ch->index / 8; | |
478 | if (idx < ARRAY_SIZE(enabled_pod)) | |
479 | enabled_pod[idx] = TRUE; | |
480 | break; | |
481 | default: | |
482 | return SR_ERR; | |
483 | } | |
484 | } | |
485 | ||
486 | /* | |
487 | * Check for resource conflicts. Some channels can be either | |
488 | * analog or digital, but never both at the same time. | |
489 | * | |
490 | * Note that the constraints might depend on the specific model. | |
491 | * These tests might need some adjustment when support for more | |
492 | * models gets added to the driver. | |
493 | */ | |
494 | if (enabled_pod[0] && enabled_chan[2]) | |
495 | return SR_ERR; | |
496 | if (enabled_pod[1] && enabled_chan[3]) | |
497 | return SR_ERR; | |
498 | return SR_OK; | |
499 | } | |
500 | ||
501 | static int hmo_setup_channels(const struct sr_dev_inst *sdi) | |
502 | { | |
503 | GSList *l; | |
504 | unsigned int i; | |
505 | gboolean *pod_enabled, setup_changed; | |
506 | char command[MAX_COMMAND_SIZE]; | |
507 | struct scope_state *state; | |
508 | const struct scope_config *model; | |
509 | struct sr_channel *ch; | |
510 | struct dev_context *devc; | |
511 | struct sr_scpi_dev_inst *scpi; | |
512 | ||
513 | devc = sdi->priv; | |
514 | scpi = sdi->conn; | |
515 | state = devc->model_state; | |
516 | model = devc->model_config; | |
517 | setup_changed = FALSE; | |
518 | ||
519 | pod_enabled = g_try_malloc0(sizeof(gboolean) * model->digital_pods); | |
520 | ||
521 | for (l = sdi->channels; l; l = l->next) { | |
522 | ch = l->data; | |
523 | switch (ch->type) { | |
524 | case SR_CHANNEL_ANALOG: | |
525 | if (ch->enabled == state->analog_channels[ch->index].state) | |
526 | break; | |
527 | g_snprintf(command, sizeof(command), | |
528 | (*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE], | |
529 | ch->index + 1, ch->enabled); | |
530 | ||
531 | if (sr_scpi_send(scpi, command) != SR_OK) | |
532 | return SR_ERR; | |
533 | state->analog_channels[ch->index].state = ch->enabled; | |
534 | setup_changed = TRUE; | |
535 | break; | |
536 | case SR_CHANNEL_LOGIC: | |
537 | /* | |
538 | * A digital POD needs to be enabled for every group of | |
539 | * 8 channels. | |
540 | */ | |
541 | if (ch->enabled) | |
542 | pod_enabled[ch->index < 8 ? 0 : 1] = TRUE; | |
543 | ||
544 | if (ch->enabled == state->digital_channels[ch->index]) | |
545 | break; | |
546 | g_snprintf(command, sizeof(command), | |
547 | (*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE], | |
548 | ch->index, ch->enabled); | |
549 | ||
550 | if (sr_scpi_send(scpi, command) != SR_OK) | |
551 | return SR_ERR; | |
552 | ||
553 | state->digital_channels[ch->index] = ch->enabled; | |
554 | setup_changed = TRUE; | |
555 | break; | |
556 | default: | |
557 | g_free(pod_enabled); | |
558 | return SR_ERR; | |
559 | } | |
560 | } | |
561 | ||
562 | for (i = 0; i < model->digital_pods; i++) { | |
563 | if (state->digital_pods[i] == pod_enabled[i]) | |
564 | continue; | |
565 | g_snprintf(command, sizeof(command), | |
566 | (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_STATE], | |
567 | i + 1, pod_enabled[i]); | |
568 | if (sr_scpi_send(scpi, command) != SR_OK) | |
569 | return SR_ERR; | |
570 | state->digital_pods[i] = pod_enabled[i]; | |
571 | setup_changed = TRUE; | |
572 | } | |
573 | ||
574 | g_free(pod_enabled); | |
575 | ||
576 | if (setup_changed && hmo_update_sample_rate(sdi) != SR_OK) | |
577 | return SR_ERR; | |
578 | ||
579 | return SR_OK; | |
580 | } | |
581 | ||
582 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
583 | { | |
584 | GSList *l; | |
585 | gboolean digital_added[MAX_DIGITAL_GROUP_COUNT]; | |
586 | size_t group, pod_count; | |
587 | struct sr_channel *ch; | |
588 | struct dev_context *devc; | |
589 | struct sr_scpi_dev_inst *scpi; | |
590 | int ret; | |
591 | ||
592 | scpi = sdi->conn; | |
593 | devc = sdi->priv; | |
594 | ||
595 | /* Preset empty results. */ | |
596 | for (group = 0; group < ARRAY_SIZE(digital_added); group++) | |
597 | digital_added[group] = FALSE; | |
598 | g_slist_free(devc->enabled_channels); | |
599 | devc->enabled_channels = NULL; | |
600 | ||
601 | /* | |
602 | * Contruct the list of enabled channels. Determine the highest | |
603 | * number of digital pods involved in the acquisition. | |
604 | */ | |
605 | pod_count = 0; | |
606 | for (l = sdi->channels; l; l = l->next) { | |
607 | ch = l->data; | |
608 | if (!ch->enabled) | |
609 | continue; | |
610 | /* Only add a single digital channel per group (pod). */ | |
611 | group = ch->index / 8; | |
612 | if (ch->type != SR_CHANNEL_LOGIC || !digital_added[group]) { | |
613 | devc->enabled_channels = g_slist_append( | |
614 | devc->enabled_channels, ch); | |
615 | if (ch->type == SR_CHANNEL_LOGIC) { | |
616 | digital_added[group] = TRUE; | |
617 | if (pod_count < group + 1) | |
618 | pod_count = group + 1; | |
619 | } | |
620 | } | |
621 | } | |
622 | if (!devc->enabled_channels) | |
623 | return SR_ERR; | |
624 | devc->pod_count = pod_count; | |
625 | devc->logic_data = NULL; | |
626 | ||
627 | /* | |
628 | * Check constraints. Some channels can be either analog or | |
629 | * digital, but not both at the same time. | |
630 | */ | |
631 | if (hmo_check_channels(devc->enabled_channels) != SR_OK) { | |
632 | sr_err("Invalid channel configuration specified!"); | |
633 | ret = SR_ERR_NA; | |
634 | goto free_enabled; | |
635 | } | |
636 | ||
637 | /* | |
638 | * Configure the analog and digital channels and the | |
639 | * corresponding digital pods. | |
640 | */ | |
641 | if (hmo_setup_channels(sdi) != SR_OK) { | |
642 | sr_err("Failed to setup channel configuration!"); | |
643 | ret = SR_ERR; | |
644 | goto free_enabled; | |
645 | } | |
646 | ||
647 | /* | |
648 | * Start acquisition on the first enabled channel. The | |
649 | * receive routine will continue driving the acquisition. | |
650 | */ | |
651 | sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50, | |
652 | hmo_receive_data, (void *)sdi); | |
653 | ||
654 | std_session_send_df_header(sdi); | |
655 | ||
656 | devc->current_channel = devc->enabled_channels; | |
657 | ||
658 | return hmo_request_data(sdi); | |
659 | ||
660 | free_enabled: | |
661 | g_slist_free(devc->enabled_channels); | |
662 | devc->enabled_channels = NULL; | |
663 | return ret; | |
664 | } | |
665 | ||
666 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
667 | { | |
668 | struct dev_context *devc; | |
669 | struct sr_scpi_dev_inst *scpi; | |
670 | ||
671 | std_session_send_df_end(sdi); | |
672 | ||
673 | devc = sdi->priv; | |
674 | ||
675 | devc->num_frames = 0; | |
676 | g_slist_free(devc->enabled_channels); | |
677 | devc->enabled_channels = NULL; | |
678 | scpi = sdi->conn; | |
679 | sr_scpi_source_remove(sdi->session, scpi); | |
680 | ||
681 | return SR_OK; | |
682 | } | |
683 | ||
684 | static struct sr_dev_driver hameg_hmo_driver_info = { | |
685 | .name = "hameg-hmo", | |
686 | .longname = "Hameg HMO", | |
687 | .api_version = 1, | |
688 | .init = std_init, | |
689 | .cleanup = std_cleanup, | |
690 | .scan = scan, | |
691 | .dev_list = std_dev_list, | |
692 | .dev_clear = dev_clear, | |
693 | .config_get = config_get, | |
694 | .config_set = config_set, | |
695 | .config_list = config_list, | |
696 | .dev_open = dev_open, | |
697 | .dev_close = dev_close, | |
698 | .dev_acquisition_start = dev_acquisition_start, | |
699 | .dev_acquisition_stop = dev_acquisition_stop, | |
700 | .context = NULL, | |
701 | }; | |
702 | SR_REGISTER_DEV_DRIVER(hameg_hmo_driver_info); |