48646b5933de9cce80ef752976a22b7fa3281484
[sigrok-cli.git] / device.c
1 /*
2  * This file is part of the sigrok-cli project.
3  *
4  * Copyright (C) 2013 Bert Vermeulen <bert@biot.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 "sigrok-cli.h"
21 #include "config.h"
22 #include <glib.h>
23 #include <string.h>
24
25 extern struct sr_context *sr_ctx;
26
27 static void free_drvopts(struct sr_config *src)
28 {
29         g_variant_unref(src->data);
30         g_free(src);
31 }
32
33 GSList *device_scan(void)
34 {
35         struct sr_dev_driver **drivers, *driver;
36         GSList *drvopts, *devices, *tmpdevs, *l;
37         int i;
38
39         if (opt_drv) {
40                 if (!parse_driver(opt_drv, &driver, &drvopts))
41                         return NULL;
42                 devices = sr_driver_scan(driver, drvopts);
43                 g_slist_free_full(drvopts, (GDestroyNotify)free_drvopts);
44         } else {
45                 /* No driver specified, let them all scan on their own. */
46                 devices = NULL;
47                 drivers = sr_driver_list();
48                 for (i = 0; drivers[i]; i++) {
49                         driver = drivers[i];
50                         if (sr_driver_init(sr_ctx, driver) != SR_OK) {
51                                 g_critical("Failed to initialize driver.");
52                                 return NULL;
53                         }
54                         tmpdevs = sr_driver_scan(driver, NULL);
55                         for (l = tmpdevs; l; l = l->next)
56                                 devices = g_slist_append(devices, l->data);
57                         g_slist_free(tmpdevs);
58                 }
59         }
60
61         return devices;
62 }
63
64 struct sr_channel_group *select_channel_group(struct sr_dev_inst *sdi)
65 {
66         struct sr_channel_group *cg;
67         GSList *l, *channel_groups;
68
69         if (!opt_channel_group)
70                 return NULL;
71
72         channel_groups = sr_dev_inst_channel_groups_get(sdi);
73
74         if (!channel_groups) {
75                 g_critical("This device does not have any channel groups.");
76                 return NULL;
77         }
78
79         for (l = channel_groups; l; l = l->next) {
80                 cg = l->data;
81                 if (!strcasecmp(opt_channel_group, cg->name)) {
82                         return cg;
83                 }
84         }
85         g_critical("Invalid channel group '%s'", opt_channel_group);
86
87         return NULL;
88 }