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[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 extern gchar *opt_drv;
27 extern gchar *opt_probe_group;
28
29 /* Convert driver options hash to GSList of struct sr_config. */
30 static GSList *hash_to_hwopt(GHashTable *hash)
31 {
32         struct sr_config *src;
33         GList *gl, *keys;
34         GSList *opts;
35         char *key;
36
37         keys = g_hash_table_get_keys(hash);
38         opts = NULL;
39         for (gl = keys; gl; gl = gl->next) {
40                 key = gl->data;
41                 src = g_malloc(sizeof(struct sr_config));
42                 if (opt_to_gvar(key, g_hash_table_lookup(hash, key), src) != 0)
43                         return NULL;
44                 opts = g_slist_append(opts, src);
45         }
46         g_list_free(keys);
47
48         return opts;
49 }
50
51 static void free_drvopts(struct sr_config *src)
52 {
53         g_variant_unref(src->data);
54         g_free(src);
55 }
56
57 GSList *device_scan(void)
58 {
59         struct sr_dev_driver **drivers, *driver;
60         GHashTable *drvargs;
61         GSList *drvopts, *devices, *tmpdevs, *l;
62         int i;
63         char *drvname;
64
65         if (opt_drv) {
66                 drvargs = parse_generic_arg(opt_drv, TRUE);
67                 drvname = g_strdup(g_hash_table_lookup(drvargs, "sigrok_key"));
68                 g_hash_table_remove(drvargs, "sigrok_key");
69                 driver = NULL;
70                 drivers = sr_driver_list();
71                 for (i = 0; drivers[i]; i++) {
72                         if (strcmp(drivers[i]->name, drvname))
73                                 continue;
74                         driver = drivers[i];
75                 }
76                 if (!driver) {
77                         g_critical("Driver %s not found.", drvname);
78                         g_hash_table_destroy(drvargs);
79                         g_free(drvname);
80                         return NULL;
81                 }
82                 g_free(drvname);
83                 if (sr_driver_init(sr_ctx, driver) != SR_OK) {
84                         g_critical("Failed to initialize driver.");
85                         g_hash_table_destroy(drvargs);
86                         return NULL;
87                 }
88                 drvopts = NULL;
89                 if (g_hash_table_size(drvargs) > 0) {
90                         if (!(drvopts = hash_to_hwopt(drvargs))) {
91                                 /* Unknown options, already logged. */
92                                 g_hash_table_destroy(drvargs);
93                                 return NULL;
94                         }
95                 }
96                 g_hash_table_destroy(drvargs);
97                 devices = sr_driver_scan(driver, drvopts);
98                 g_slist_free_full(drvopts, (GDestroyNotify)free_drvopts);
99         } else {
100                 /* No driver specified, let them all scan on their own. */
101                 devices = NULL;
102                 drivers = sr_driver_list();
103                 for (i = 0; drivers[i]; i++) {
104                         driver = drivers[i];
105                         if (sr_driver_init(sr_ctx, driver) != SR_OK) {
106                                 g_critical("Failed to initialize driver.");
107                                 return NULL;
108                         }
109                         tmpdevs = sr_driver_scan(driver, NULL);
110                         for (l = tmpdevs; l; l = l->next)
111                                 devices = g_slist_append(devices, l->data);
112                         g_slist_free(tmpdevs);
113                 }
114         }
115
116         return devices;
117 }
118
119 struct sr_probe_group *select_probe_group(struct sr_dev_inst *sdi)
120 {
121         struct sr_probe_group *pg;
122         GSList *l;
123
124         if (!opt_probe_group)
125                 return NULL;
126
127         if (!sdi->probe_groups) {
128                 g_critical("This device does not have any probe groups.");
129                 return NULL;
130         }
131
132         for (l = sdi->probe_groups; l; l = l->next) {
133                 pg = l->data;
134                 if (!strcasecmp(opt_probe_group, pg->name)) {
135                         return pg;
136                 }
137         }
138
139         return NULL;
140 }
141