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hameg-hmo: Add initial working driver version.
[libsigrok.git] / hardware / hameg-hmo / api.c
CommitLineData
06a3e78a
DJ		 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
13f2b9d7
DJ		 20#include <stdlib.h>
21#include <glib/gstdio.h>
22
06a3e78a
DJ		 23#include "protocol.h"
24
13f2b9d7
DJ		 25#define SERIALCOMM "115200/8n1/flow=1"
26
27static const int32_t hwopts[] = {
28 SR_CONF_CONN,
29 SR_CONF_SERIALCOMM,
30};
31
32struct usb_id_info {
33 uint16_t vendor_id;
34 uint16_t product_id;
35} usb_id_info;
36
37static struct usb_id_info ho_models[] = {
38 {
39 .vendor_id = 0x0403,
40 .product_id = 0xed72, /* HO720 */
41 },
42 {
43 .vendor_id = 0x0403,
44 .product_id = 0xed73, /* HO730 */
45 },
46};
06a3e78a
DJ		 47
48static int init(struct sr_context *sr_ctx)
49{
50 return std_init(sr_ctx, di, LOG_PREFIX);
51}
52
13f2b9d7
DJ		 53/**
54 * Find USB serial devices via the USB vendor ID and product ID.
55 *
56 * @param vendor_id vendor ID of the USB device.
57 * @param product_id product ID of the USB device.
58 *
59 * @return A GSList of strings containing the path of the serial device or null
60 * if no serial device is found. The returned list must be freed by the caller.
61 */
62static GSList *auto_find_usb(unsigned long vendor_id,
63 unsigned long product_id)
64{
65#ifdef __linux__
66 const gchar *usb_dev;
67 const char device_tree[] = "/sys/bus/usb/devices/";
68
69 GDir *devices_dir;
70
71 GSList *l = NULL;
72 GSList *tty_devices;
73 GSList *matched_paths;
74
75 l = NULL;
76 tty_devices = NULL;
77 matched_paths = NULL;
78
79 if (!(devices_dir = g_dir_open(device_tree, 0, NULL)))
80 return NULL;
81
82 /*
83 * Find potential candidates using the vendor ID and product ID
84 * and store them in matched_paths
85 */
86 while ((usb_dev = g_dir_read_name(devices_dir))) {
87 FILE *fd;
88 char tmp[5];
89
90 gchar *vendor_path;
91 gchar *product_path;
92
93 unsigned long read_vendor_id;
94 unsigned long read_product_id;
95
96 vendor_path = g_strconcat(device_tree,
97 usb_dev, "/idVendor", NULL);
98 product_path = g_strconcat(device_tree,
99 usb_dev, "/idProduct", NULL);
100
101 if (!g_file_test(vendor_path, G_FILE_TEST_EXISTS) ||
102 !g_file_test(product_path, G_FILE_TEST_EXISTS))
103 goto skip_device;
104
105 if ((fd = g_fopen(vendor_path, "r")) == NULL)
106 goto skip_device;
107
108 if (fgets(tmp, sizeof(tmp), fd) == NULL) {
109 fclose(fd);
110 goto skip_device;
111 }
112 read_vendor_id = strtoul(tmp, NULL, 16);
113
114 fclose(fd);
115
116 if ((fd = g_fopen(product_path, "r")) == NULL)
117 goto skip_device;
118
119 if (fgets(tmp, sizeof(tmp), fd) == NULL) {
120 fclose(fd);
121 goto skip_device;
122 }
123 read_product_id = strtoul(tmp, NULL, 16);
124
125 fclose(fd);
126
127 if (vendor_id == read_vendor_id &&
128 product_id == read_product_id) {
129 gchar *path_copy;
130
131 path_copy = g_strdup(usb_dev);
132 matched_paths = g_slist_prepend(matched_paths,
133 path_copy);
134 }
135
136 skip_device:
137 g_free(vendor_path);
138 g_free(product_path);
139 }
140 g_dir_close(devices_dir);
141
142 /* For every matched device try to find a ttyUSBX subfolder */
143 for (l = matched_paths; l; l = l->next) {
144 const char *file;
145
146 GDir *device_dir;
147
148 gchar *prefix;
149 gchar *subdir_path;
150 gchar *device_path;
151
152 subdir_path = NULL;
153
154 device_path = g_strconcat(device_tree, l->data, NULL);
155
156 if (!(device_dir = g_dir_open(device_path, 0, NULL))) {
157 g_free(device_path);
158 continue;
159 }
160
161 prefix = g_strconcat(l->data, ":", NULL);
162
163 while ((file = g_dir_read_name(device_dir))) {
164 if (g_str_has_prefix(file, prefix)) {
165 subdir_path = g_strconcat(device_path,
166 "/", file,
167 NULL);
168 break;
169 }
170 }
171 g_dir_close(device_dir);
172
173 g_free(prefix);
174 g_free(device_path);
175
176 if (subdir_path) {
177 if (!(device_dir = g_dir_open(subdir_path, 0, NULL))) {
178 g_free(subdir_path);
179 continue;
180 }
181 g_free(subdir_path);
182
183 while ((file = g_dir_read_name(device_dir))) {
184 if (g_str_has_prefix(file, "ttyUSB")) {
185 gchar *tty_path;
186
187 tty_path = g_strconcat("/dev/",
188 file, NULL);
189 sr_dbg("Found USB device %04x:%04x attached to %s",
190 vendor_id, product_id, tty_path);
191 tty_devices = g_slist_prepend(tty_devices,
192 tty_path);
193 break;
194 }
195 }
196 g_dir_close(device_dir);
197 }
198 }
199 g_slist_free_full(matched_paths, g_free);
200
201 return tty_devices;
202#else
203 return NULL;
204#endif
205}
206
06a3e78a
DJ		 207static GSList *scan(GSList *options)
208{
06a3e78a
DJ		 209 GSList *devices;
210
13f2b9d7
DJ		 211 struct drv_context *drvc;
212 struct sr_dev_inst *sdi;
213
214 const char *serial_device;
215 const char *serial_options;
06a3e78a 216
13f2b9d7
DJ		 217 serial_device = NULL;
218 serial_options = SERIALCOMM;
219
220 sdi = NULL;
06a3e78a
DJ		 221 devices = NULL;
222 drvc = di->priv;
223 drvc->instances = NULL;
224
13f2b9d7
DJ		 225 if (sr_serial_extract_options(options, &serial_device,
226 &serial_options) == SR_OK) {
227 sdi = hameg_probe_serial_device(serial_device, serial_options);
228
229 if (sdi != NULL) {
230 devices = g_slist_append(devices, sdi);
231 drvc->instances = g_slist_append(drvc->instances, sdi);
232 }
233
234 } else {
235 GSList *l;
236 GSList *tty_devices;
237
238 unsigned int i;
239
240 tty_devices = NULL;
241
242 for (i = 0; i < ARRAY_SIZE(ho_models); i++) {
243 if ((l = auto_find_usb(ho_models[i].vendor_id,
244 ho_models[i].product_id)) == NULL)
245 continue;
246
247 tty_devices = g_slist_concat(tty_devices, l);
248 }
249
250 for (l = tty_devices; l; l = l->next) {
251 sdi = hameg_probe_serial_device(l->data, serial_options);
252 if (sdi != NULL) {
253 devices = g_slist_append(devices, sdi);
254 drvc->instances = g_slist_append(drvc->instances, sdi);
255 }
256 }
257
258 g_slist_free_full(tty_devices, g_free);
259 }
06a3e78a
DJ		 260
261 return devices;
262}
263
264static GSList *dev_list(void)
265{
266 return ((struct drv_context *)(di->priv))->instances;
267}
268
13f2b9d7
DJ		 269static void clear_helper(void *priv)
270{
271 unsigned int i;
272
273 struct dev_context *devc;
274 struct scope_config *model;
275
276 devc = priv;
277 model = devc->model_config;
278
279 scope_state_free(devc->model_state);
280
281 for (i = 0; i < model->analog_channels; ++i) {
282 g_slist_free(devc->analog_groups[i].probes);
283 }
284
285 for (i = 0; i < model->digital_pods; ++i) {
286 g_slist_free(devc->digital_groups[i].probes);
287 g_free(devc->digital_groups[i].name);
288 }
289
290 g_free(devc->analog_groups);
291 g_free(devc->digital_groups);
292
293 g_free(devc);
294}
295
06a3e78a
DJ		 296static int dev_clear(void)
297{
13f2b9d7 298 return std_dev_clear(di, clear_helper);
06a3e78a
DJ		 299}
300
301static int dev_open(struct sr_dev_inst *sdi)
302{
13f2b9d7
DJ		 303 if (sdi->status != SR_ST_ACTIVE &&
304 serial_open(sdi->conn, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
305 return SR_ERR;
06a3e78a 306
13f2b9d7
DJ		 307 if (scope_state_get(sdi) != SR_OK)
308 return SR_ERR;
06a3e78a
DJ		 309
310 sdi->status = SR_ST_ACTIVE;
311
312 return SR_OK;
313}
314
315static int dev_close(struct sr_dev_inst *sdi)
316{
13f2b9d7
DJ		 317 if (sdi->status == SR_ST_INACTIVE)
318 return SR_OK;
06a3e78a 319
13f2b9d7 320 serial_close(sdi->conn);
06a3e78a
DJ		 321
322 sdi->status = SR_ST_INACTIVE;
323
324 return SR_OK;
325}
326
327static int cleanup(void)
328{
329 dev_clear();
330
06a3e78a
DJ		 331 return SR_OK;
332}
333
13f2b9d7
DJ		 334static int check_probe_group(struct dev_context *devc,
335 const struct sr_probe_group *probe_group)
336{
337 unsigned int i;
338 struct scope_config *model;
339
340 model = devc->model_config;
341
342 if (!probe_group)
343 return PG_NONE;
344
345 for (i = 0; i < model->analog_channels; ++i)
346 if (probe_group == &devc->analog_groups[i])
347 return PG_ANALOG;
348
349 for (i = 0; i < model->digital_pods; ++i)
350 if (probe_group == &devc->digital_groups[i])
351 return PG_DIGITAL;
352
353 sr_err("Invalid probe group specified.");
354 return PG_INVALID;
355}
356
357static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
358 const struct sr_probe_group *probe_group)
06a3e78a
DJ		 359{
360 int ret;
13f2b9d7
DJ		 361 int pg_type;
362 unsigned int i;
363
364 struct dev_context *devc;
365 struct scope_config *model;
366
367 if (!sdi || !(devc = sdi->priv))
368 return SR_ERR_ARG;
369
370 if ((pg_type = check_probe_group(devc, probe_group)) == PG_INVALID)
371 return SR_ERR;
06a3e78a 372
13f2b9d7
DJ		 373 ret = SR_ERR_NA;
374 model = devc->model_config;
06a3e78a 375
06a3e78a 376 switch (key) {
13f2b9d7
DJ		 377 case SR_CONF_NUM_TIMEBASE:
378 *data = g_variant_new_int32(model->num_xdivs);
379 ret = SR_OK;
380 break;
381
382 case SR_CONF_NUM_VDIV:
383 if (pg_type == PG_NONE) {
384 sr_err("No probe group specified.");
385 return SR_ERR_PROBE_GROUP;
386
387 } else if (pg_type == PG_ANALOG) {
388 for (i = 0; i < model->analog_channels; ++i) {
389 if (probe_group == &devc->analog_groups[i]) {
390 *data = g_variant_new_int32(model->num_ydivs);
391 ret = SR_OK;
392 break;
393 }
394 }
395
396 } else {
397 ret = SR_ERR_NA;
398 }
399 break;
400
06a3e78a 401 default:
13f2b9d7 402 ret = SR_ERR_NA;
06a3e78a
DJ		 403 }
404
405 return ret;
406}
407
13f2b9d7
DJ		 408static GVariant *build_tuples(const uint64_t (*array)[][2], unsigned int n)
409{
410 unsigned int i;
411
412 GVariant *rational[2];
413 GVariantBuilder gvb;
414
415 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
416
417 for (i = 0; i < n; i++) {
418 rational[0] = g_variant_new_uint64((*array)[i][0]);
419 rational[1] = g_variant_new_uint64((*array)[i][1]);
420
421 /* FIXME valgrind reports a memory leak here */
422 g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
423 }
424
425 return g_variant_builder_end(&gvb);
426}
427
428static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
429 const struct sr_probe_group *probe_group)
06a3e78a
DJ		 430{
431 int ret;
13f2b9d7
DJ		 432 int pg_type;
433 unsigned int i;
434 char command[MAX_COMMAND_SIZE];
06a3e78a 435
13f2b9d7
DJ		 436 struct dev_context *devc;
437 struct scope_config *model;
438 struct scope_state *state;
06a3e78a 439
13f2b9d7
DJ		 440 if (!sdi || !(devc = sdi->priv))
441 return SR_ERR_ARG;
442
443 if ((pg_type = check_probe_group(devc, probe_group)) == PG_INVALID)
444 return SR_ERR;
445
446 model = devc->model_config;
447 state = devc->model_state;
448
449 ret = SR_ERR_NA;
06a3e78a 450
06a3e78a 451 switch (key) {
13f2b9d7
DJ		 452 case SR_CONF_LIMIT_FRAMES:
453 devc->frame_limit = g_variant_get_uint64(data);
454 ret = SR_OK;
455 break;
456
457 case SR_CONF_TRIGGER_SOURCE:
458 {
459 const char *tmp;
460
461 tmp = g_variant_get_string(data, NULL);
462
463 for (i = 0; (*model->trigger_sources)[i]; i++) {
464 if (!g_strcmp0(tmp, (*model->trigger_sources)[i])) {
465 state->trigger_source = i;
466
467 g_snprintf(command, sizeof(command),
468 (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE],
469 (*model->trigger_sources)[i]);
470
471 ret = sr_scpi_send(sdi->conn, command);
472 break;
473 }
474 }
475 }
476 break;
477
478 case SR_CONF_VDIV:
479 {
480 unsigned int j;
481 uint64_t p, q;
482
483 if (pg_type == PG_NONE) {
484 sr_err("No probe group specified.");
485 return SR_ERR_PROBE_GROUP;
486 }
487
488 g_variant_get(data, "(tt)", &p, &q);
489
490 for (i = 0; i < model->num_vdivs; i++) {
491 if (p == (*model->vdivs)[i][0] &&
492 q == (*model->vdivs)[i][1]){
493 for (j = 1; j <= model->analog_channels; ++j) {
494 if (probe_group == &devc->analog_groups[j - 1]) {
495 state->analog_channels[j-1].vdiv = (float) p / q;
496 g_snprintf(command, sizeof(command),
497 (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV],
498 j, state->analog_channels[j-1].vdiv);
499
500 if (sr_scpi_send(sdi->conn, command) != SR_OK ||
501 sr_scpi_get_opc(sdi->conn) != SR_OK)
502 return SR_ERR;
503
504 break;
505 }
506 }
507
508 ret = SR_OK;
509 break;
510 }
511 }
512 }
513 break;
514
515 case SR_CONF_TIMEBASE:
516 {
517 uint64_t p, q;
518
519 g_variant_get(data, "(tt)", &p, &q);
520
521 for (i = 0; i < model->num_timebases; i++) {
522 if (p == (*model->timebases)[i][0] &&
523 q == (*model->timebases)[i][1]){
524 state->timebase = (float) p / q;
525 g_snprintf(command, sizeof(command),
526 (*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE],
527 state->timebase);
528
529 ret = sr_scpi_send(sdi->conn, command);
530 break;
531 }
532 }
533 }
534 break;
535
536 case SR_CONF_HORIZ_TRIGGERPOS:
537 {
538 double tmp;
539
540 tmp = g_variant_get_double(data);
541
542 if (tmp < 0.0 || tmp > 1.0)
543 return SR_ERR;
544
545 state->horiz_triggerpos = -(tmp - 0.5) * state->timebase * model->num_xdivs;
546 g_snprintf(command, sizeof(command),
547 (*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS],
548 state->horiz_triggerpos);
549
550 ret = sr_scpi_send(sdi->conn, command);
551 }
552 break;
553
554 case SR_CONF_TRIGGER_SLOPE:
555 {
556 uint64_t tmp;
557
558 tmp = g_variant_get_uint64(data);
559
560 if (tmp != 0 && tmp != 1)
561 return SR_ERR;
562
563 state->trigger_slope = tmp;
564
565 g_snprintf(command, sizeof(command),
566 (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE],
567 tmp ? "POS" : "NEG");
568
569 ret = sr_scpi_send(sdi->conn, command);
570 }
571 break;
572
573 case SR_CONF_COUPLING:
574 {
575 unsigned int j;
576 const char *tmp;
577
578 if (pg_type == PG_NONE) {
579 sr_err("No probe group specified.");
580 return SR_ERR_PROBE_GROUP;
581 }
582
583 tmp = g_variant_get_string(data, NULL);
584
585 for (i = 0; (*model->coupling_options)[i]; i++) {
586 if (!strcmp(tmp, (*model->coupling_options)[i])) {
587 for (j = 1; j <= model->analog_channels; ++j) {
588 if (probe_group == &devc->analog_groups[j - 1]) {
589 state->analog_channels[j-1].coupling = i;
590
591 g_snprintf(command, sizeof(command),
592 (*model->scpi_dialect)[SCPI_CMD_SET_COUPLING],
593 j, tmp);
594
595 if (sr_scpi_send(sdi->conn, command) != SR_OK ||
596 sr_scpi_get_opc(sdi->conn) != SR_OK)
597 return SR_ERR;
598 break;
599 }
600 }
601
602 ret = SR_OK;
603 break;
604 }
605 }
606 }
607 break;
608
06a3e78a
DJ		 609 default:
610 ret = SR_ERR_NA;
13f2b9d7 611 break;
06a3e78a
DJ		 612 }
613
13f2b9d7
DJ		 614 if (ret == SR_OK)
615 ret = sr_scpi_get_opc(sdi->conn);
616
06a3e78a
DJ		 617 return ret;
618}
619
13f2b9d7
DJ		 620static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
621 const struct sr_probe_group *probe_group)
06a3e78a 622{
13f2b9d7
DJ		 623 int pg_type;
624
625 struct dev_context *devc;
626 struct scope_config *model;
627
628 if (!sdi || !(devc = sdi->priv))
629 return SR_ERR_ARG;
06a3e78a 630
13f2b9d7
DJ		 631 if ((pg_type = check_probe_group(devc, probe_group)) == PG_INVALID)
632 return SR_ERR;
633
634 model = devc->model_config;
06a3e78a 635
06a3e78a 636 switch (key) {
13f2b9d7
DJ		 637 case SR_CONF_DEVICE_OPTIONS:
638 if (pg_type == PG_NONE) {
639 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
640 model->hw_caps,
641 model->num_hwcaps,
642 sizeof(int32_t));
643 } else if (pg_type == PG_ANALOG) {
644 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
645 model->analog_hwcaps,
646 model->num_analog_hwcaps,
647 sizeof(int32_t));
648 } else {
649 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
650 NULL, 0, sizeof(int32_t));
651 }
652 break;
653
654 case SR_CONF_COUPLING:
655 if (pg_type == PG_NONE)
656 return SR_ERR_PROBE_GROUP;
657
658 *data = g_variant_new_strv(*model->coupling_options,
659 g_strv_length((char **) *model->coupling_options));
660 break;
661
662 case SR_CONF_TRIGGER_SOURCE:
663 *data = g_variant_new_strv(*model->trigger_sources,
664 g_strv_length((char **) *model->trigger_sources));
665 break;
666
667 case SR_CONF_TIMEBASE:
668 *data = build_tuples(model->timebases, model->num_timebases);
669 break;
670
671 case SR_CONF_VDIV:
672 if (pg_type == PG_NONE)
673 return SR_ERR_PROBE_GROUP;
674
675 *data = build_tuples(model->vdivs, model->num_vdivs);
676 break;
677
06a3e78a
DJ		 678 default:
679 return SR_ERR_NA;
680 }
681
13f2b9d7 682 return SR_OK;
06a3e78a
DJ		 683}
684
13f2b9d7 685SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi)
06a3e78a 686{
13f2b9d7
DJ		 687 char command[MAX_COMMAND_SIZE];
688
689 struct sr_probe *probe;
690 struct dev_context *devc;
691 struct scope_config *model;
692
693 devc = sdi->priv;
694 model = devc->model_config;
695
696 probe = devc->current_probe->data;
697
698 switch (probe->type) {
699 case SR_PROBE_ANALOG:
700 g_snprintf(command, sizeof(command),
701 (*model->scpi_dialect)[SCPI_CMD_GET_ANALOG_DATA],
702 probe->index + 1);
703 break;
704 case SR_PROBE_LOGIC:
705 g_snprintf(command, sizeof(command),
706 (*model->scpi_dialect)[SCPI_CMD_GET_DIG_DATA],
707 probe->index < 8 ? 1 : 2);
708 break;
709 default:
710 sr_err("Invalid probe type");
711 break;
712 }
713
714 return sr_scpi_send(sdi->conn, command);
715}
716
717static int hmo_check_probes(GSList *probes)
718{
719 GSList *l;
720 gboolean enabled_pod1;
721 gboolean enabled_pod2;
722 gboolean enabled_chan3;
723 gboolean enabled_chan4;
724
725 struct sr_probe *probe;
726
727 enabled_pod1 = FALSE;
728 enabled_pod2 = FALSE;
729 enabled_chan3 = FALSE;
730 enabled_chan4 = FALSE;
731
732 for (l = probes; l; l = l->next) {
733 probe = l->data;
734
735 switch (probe->type) {
736 case SR_PROBE_ANALOG:
737 if (probe->index == 2)
738 enabled_chan3 = TRUE;
739 else if (probe->index == 3)
740 enabled_chan4 = TRUE;
741 break;
742
743 case SR_PROBE_LOGIC:
744 if (probe->index < 8)
745 enabled_pod1 = TRUE;
746 else
747 enabled_pod2 = TRUE;
748 break;
749
750 default:
751 return SR_ERR;
752 }
753 }
754
755 if ((enabled_pod1 && enabled_chan3) ||
756 (enabled_pod2 && enabled_chan4))
757 return SR_ERR;
758
759 return SR_OK;
760}
761
762static int hmo_setup_probes(const struct sr_dev_inst *sdi)
763{
764 GSList *l;
765 unsigned int i;
766 gboolean *pod_enabled;
767 char command[MAX_COMMAND_SIZE];
768
769 struct scope_state *state;
770 struct scope_config *model;
771
772 struct sr_probe *probe;
773 struct dev_context *devc;
774 struct sr_serial_dev_inst *serial;
775
776 devc = sdi->priv;
777 serial = sdi->conn;
778 state = devc->model_state;
779 model = devc->model_config;
780
781 pod_enabled = g_try_malloc0(sizeof(gboolean) * model->digital_pods);
782
783 for (l = sdi->probes; l; l = l->next) {
784 probe = l->data;
785
786 switch (probe->type) {
787 case SR_PROBE_ANALOG:
788 {
789 if (probe->enabled != state->analog_channels[probe->index].state) {
790 g_snprintf(command, sizeof(command),
791 (*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE],
792 probe->index + 1, probe->enabled);
793
794 if (sr_scpi_send(serial, command) != SR_OK)
795 return SR_ERR;
796 state->analog_channels[probe->index].state = probe->enabled;
797 }
798 }
799 break;
800
801 case SR_PROBE_LOGIC:
802 {
803 /*
804 * A digital POD needs to be enabled for every group of
805 * 8 probes.
806 */
807 if (probe->enabled)
808 pod_enabled[probe->index < 8 ? 0 : 1] = TRUE;
809
810 if (probe->enabled != state->digital_channels[probe->index]) {
811 g_snprintf(command, sizeof(command),
812 (*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE],
813 probe->index, probe->enabled);
814
815 if (sr_scpi_send(serial, command) != SR_OK)
816 return SR_ERR;
817
818 state->digital_channels[probe->index] = probe->enabled;
819 }
820 }
821 break;
822
823 default:
824 return SR_ERR;
825 }
826 }
827
828 for (i = 1; i <= model->digital_pods; ++i) {
829 if (state->digital_pods[i-1] != pod_enabled[i-1]) {
830 g_snprintf(command, sizeof(command),
831 (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_STATE],
832 i, pod_enabled[i-1]);
833
834 if (sr_scpi_send(serial, command) != SR_OK)
835 return SR_ERR;
836
837 state->digital_pods[i-1] = pod_enabled[i-1];
838 }
839 }
840
841 g_free(pod_enabled);
842
843 return SR_OK;
844}
845
846static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
847{
848 GSList *l;
849 gboolean digital_added;
850
851 struct sr_probe *probe;
852 struct dev_context *devc;
853 struct sr_serial_dev_inst *serial;
06a3e78a
DJ		 854
855 if (sdi->status != SR_ST_ACTIVE)
856 return SR_ERR_DEV_CLOSED;
857
13f2b9d7
DJ		 858 serial = sdi->conn;
859 devc = sdi->priv;
860 digital_added = FALSE;
861
862 for (l = sdi->probes; l; l = l->next) {
863 probe = l->data;
864
865 if (probe->enabled) {
866 /* Only add a single digital probe */
867 if (probe->type != SR_PROBE_LOGIC || !digital_added) {
868 devc->enabled_probes = g_slist_append(devc->enabled_probes,
869 probe);
870 if (probe->type == SR_PROBE_LOGIC)
871 digital_added = TRUE;
872 }
873 }
874 }
06a3e78a 875
13f2b9d7
DJ		 876 if (!devc->enabled_probes)
877 return SR_ERR;
878
879 if (hmo_check_probes(devc->enabled_probes) != SR_OK) {
880 sr_err("Invalid probe configuration specified!");
881 return SR_ERR_NA;
882 }
883
884 if (hmo_setup_probes(sdi) != SR_OK) {
885 sr_err("Failed to setup probe configuration!");
886 return SR_ERR;
887 }
888
889 sr_source_add(serial->fd, G_IO_IN, 50, hameg_hmo_receive_data, (void *)sdi);
890
891 /* Send header packet to the session bus. */
892 std_session_send_df_header(cb_data, LOG_PREFIX);
893
894 devc->current_probe = devc->enabled_probes;
895
896 return hmo_request_data(sdi);
06a3e78a
DJ		 897}
898
899static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
900{
13f2b9d7
DJ		 901 struct dev_context *devc;
902 struct sr_serial_dev_inst *serial;
903
06a3e78a
DJ		 904 (void)cb_data;
905
906 if (sdi->status != SR_ST_ACTIVE)
907 return SR_ERR_DEV_CLOSED;
908
13f2b9d7
DJ		 909 devc = sdi->priv;
910
911 g_slist_free(devc->enabled_probes);
912 devc->enabled_probes = NULL;
913 serial = sdi->conn;
914 sr_source_remove(serial->fd);
06a3e78a
DJ		 915
916 return SR_OK;
917}
918
919SR_PRIV struct sr_dev_driver hameg_hmo_driver_info = {
920 .name = "hameg-hmo",
921 .longname = "Hameg HMO scope driver",
922 .api_version = 1,
923 .init = init,
924 .cleanup = cleanup,
925 .scan = scan,
926 .dev_list = dev_list,
927 .dev_clear = dev_clear,
928 .config_get = config_get,
929 .config_set = config_set,
930 .config_list = config_list,
931 .dev_open = dev_open,
932 .dev_close = dev_close,
933 .dev_acquisition_start = dev_acquisition_start,
934 .dev_acquisition_stop = dev_acquisition_stop,
935 .priv = NULL,
936};
Hardware access and backend lib