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