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_channel_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_channel_group *select_channel_group(struct sr_dev_inst *sdi)
 120 {
 121         struct sr_channel_group *cg;
 122         GSList *l;
 123
 124         if (!opt_channel_group)
 125                 return NULL;
 126
 127         if (!sdi->channel_groups) {
 128                 g_critical("This device does not have any channel groups.");
 129                 return NULL;
 130         }
 131
 132         for (l = sdi->channel_groups; l; l = l->next) {
 133                 cg = l->data;
 134                 if (!strcasecmp(opt_channel_group, cg->name)) {
 135                         return cg;
 136                 }
 137         }
 138
 139         return NULL;
 140 }
 141