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 }
  89