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 "config.h"
  21 #include <glib.h>
  22 #include <libsigrok/libsigrok.h>
  23 #include "sigrok-cli.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         const struct sr_config_info *srci;
  33         struct sr_config *src;
  34         GList *gl, *keys;
  35         GSList *opts;
  36         char *key, *value;
  37
  38         keys = g_hash_table_get_keys(hash);
  39         opts = NULL;
  40         for (gl = keys; gl; gl = gl->next) {
  41                 key = gl->data;
  42                 if (!(srci = sr_config_info_name_get(key))) {
  43                         g_critical("Unknown option %s", key);
  44                         return NULL;
  45                 }
  46                 src = g_try_malloc(sizeof(struct sr_config));
  47                 src->key = srci->key;
  48                 value = g_hash_table_lookup(hash, key);
  49                 src->data = g_variant_new_string(value);
  50                 opts = g_slist_append(opts, src);
  51         }
  52         g_list_free(keys);
  53
  54         return opts;
  55 }
  56
  57 static void free_drvopts(struct sr_config *src)
  58 {
  59         g_variant_unref(src->data);
  60         g_free(src);
  61 }
  62
  63 GSList *device_scan(void)
  64 {
  65         struct sr_dev_driver **drivers, *driver;
  66         GHashTable *drvargs;
  67         GSList *drvopts, *devices, *tmpdevs, *l;
  68         int i;
  69         char *drvname;
  70
  71         if (opt_drv) {
  72                 drvargs = parse_generic_arg(opt_drv, TRUE);
  73                 drvname = g_strdup(g_hash_table_lookup(drvargs, "sigrok_key"));
  74                 g_hash_table_remove(drvargs, "sigrok_key");
  75                 driver = NULL;
  76                 drivers = sr_driver_list();
  77                 for (i = 0; drivers[i]; i++) {
  78                         if (strcmp(drivers[i]->name, drvname))
  79                                 continue;
  80                         driver = drivers[i];
  81                 }
  82                 if (!driver) {
  83                         g_critical("Driver %s not found.", drvname);
  84                         g_hash_table_destroy(drvargs);
  85                         g_free(drvname);
  86                         return NULL;
  87                 }
  88                 g_free(drvname);
  89                 if (sr_driver_init(sr_ctx, driver) != SR_OK) {
  90                         g_critical("Failed to initialize driver.");
  91                         g_hash_table_destroy(drvargs);
  92                         return NULL;
  93                 }
  94                 drvopts = NULL;
  95                 if (g_hash_table_size(drvargs) > 0) {
  96                         if (!(drvopts = hash_to_hwopt(drvargs))) {
  97                                 /* Unknown options, already logged. */
  98                                 g_hash_table_destroy(drvargs);
  99                                 return NULL;
 100                         }
 101                 }
 102                 g_hash_table_destroy(drvargs);
 103                 devices = sr_driver_scan(driver, drvopts);
 104                 g_slist_free_full(drvopts, (GDestroyNotify)free_drvopts);
 105         } else {
 106                 /* No driver specified, let them all scan on their own. */
 107                 devices = NULL;
 108                 drivers = sr_driver_list();
 109                 for (i = 0; drivers[i]; i++) {
 110                         driver = drivers[i];
 111                         if (sr_driver_init(sr_ctx, driver) != SR_OK) {
 112                                 g_critical("Failed to initialize driver.");
 113                                 return NULL;
 114                         }
 115                         tmpdevs = sr_driver_scan(driver, NULL);
 116                         for (l = tmpdevs; l; l = l->next)
 117                                 devices = g_slist_append(devices, l->data);
 118                         g_slist_free(tmpdevs);
 119                 }
 120         }
 121
 122         return devices;
 123 }
 124
 125 struct sr_probe_group *select_probe_group(struct sr_dev_inst *sdi)
 126 {
 127         struct sr_probe_group *pg;
 128         GSList *l;
 129
 130         if (!opt_probe_group)
 131                 return NULL;
 132
 133         if (!sdi->probe_groups) {
 134                 g_critical("This device does not have any probe groups.");
 135                 return NULL;
 136         }
 137
 138         for (l = sdi->probe_groups; l; l = l->next) {
 139                 pg = l->data;
 140                 if (!strcasecmp(opt_probe_group, pg->name)) {
 141                         return pg;
 142                 }
 143         }
 144
 145         return NULL;
 146 }
 147