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