device.c

   1 /*
   2  * This file is part of the sigrok project.
   3  *
   4  * Copyright (C) 2010 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 <stdio.h>
  21 #include <glib.h>
  22 #include "sigrok.h"
  23
  24 extern struct sigrok_global *global;
  25
  26 GSList *devices = NULL;
  27
  28
  29 void device_scan(void)
  30 {
  31         GSList *plugins, *l;
  32         struct device_plugin *plugin;
  33         int num_devices, i;
  34
  35         plugins = list_hwplugins();
  36
  37         /* initialize all plugins first. Since the init() call may involve
  38          * a firmware upload and associated delay, we may as well get all
  39          * of these out of the way first.
  40          */
  41         for(l = plugins; l; l = l->next)
  42         {
  43                 plugin = l->data;
  44                 g_message("initializing %s plugin", plugin->name);
  45                 num_devices = plugin->init(NULL);
  46                 for(i = 0; i < num_devices; i++)
  47                 {
  48                         device_new(plugin, i);
  49                 }
  50         }
  51
  52 }
  53
  54
  55 void device_close_all(void)
  56 {
  57         struct device *device;
  58
  59         while(devices)
  60         {
  61                 device = devices->data;
  62                 device->plugin->close(device->plugin_index);
  63                 device_destroy(device);
  64         }
  65
  66 }
  67
  68
  69 GSList *device_list(void)
  70 {
  71
  72         return devices;
  73 }
  74
  75
  76 struct device *device_new(struct device_plugin *plugin, int plugin_index)
  77 {
  78         struct device *device;
  79         int num_probes, i;
  80         char probename[16];
  81
  82         device = g_malloc0(sizeof(struct device));
  83         device->plugin = plugin;
  84         device->plugin_index = plugin_index;
  85         devices = g_slist_append(devices, device);
  86
  87         num_probes = (int) device->plugin->get_device_info(device->plugin_index, DI_NUM_PROBES);
  88         for(i = 0; i < num_probes; i++)
  89         {
  90                 snprintf(probename, 16, "%d", i+1);
  91                 device_probe_add(device, probename);
  92         }
  93
  94         return device;
  95 }
  96
  97
  98 void device_clear(struct device *device)
  99 {
 100         int probenum;
 101
 102         /* TODO: plugin-specific clear call? */
 103
 104         if(device->probes)
 105                 for(probenum = 1; probenum <= g_slist_length(device->probes); probenum++)
 106                         device_probe_clear(device, probenum);
 107
 108 }
 109
 110
 111 void device_destroy(struct device *device)
 112 {
 113         int probenum;
 114
 115         /* TODO: plugin-specific destroy call, need to decrease refcount in plugin */
 116
 117         devices = g_slist_remove(devices, device);
 118         if(device->probes)
 119         {
 120                 for(probenum = 1; probenum <= g_slist_length(device->probes); probenum++)
 121                         device_probe_clear(device, probenum);
 122                 g_slist_free(device->probes);
 123         }
 124         g_free(device);
 125
 126 }
 127
 128
 129 void device_probe_clear(struct device *device, int probenum)
 130 {
 131         struct probe *p;
 132
 133         p = probe_find(device, probenum);
 134         if(!p)
 135                 return;
 136
 137         if(p->name)
 138         {
 139                 g_free(p->name);
 140                 p->name = NULL;
 141         }
 142
 143         if(p->trigger)
 144         {
 145                 g_free(p->trigger);
 146                 p->trigger = NULL;
 147         }
 148
 149 }
 150
 151
 152 void device_probe_add(struct device *device, char *name)
 153 {
 154         struct probe *p;
 155
 156         p = g_malloc0(sizeof(struct probe));
 157         p->index = g_slist_length(device->probes) + 1;
 158         p->enabled = TRUE;
 159         p->name = g_strdup(name);
 160         p->trigger = NULL;
 161         device->probes = g_slist_append(device->probes, p);
 162
 163 }
 164
 165
 166 struct probe *probe_find(struct device *device, int probenum)
 167 {
 168         GSList *l;
 169         struct probe *p, *found_probe;
 170
 171         found_probe = NULL;
 172         for(l = device->probes; l; l = l->next)
 173         {
 174                 p = l->data;
 175                 if(p->index == probenum)
 176                 {
 177                         found_probe = p;
 178                         break;
 179                 }
 180         }
 181
 182         return found_probe;
 183 }
 184
 185
 186 void device_probe_name(struct device *device, int probenum, char *name)
 187 {
 188         struct probe *p;
 189
 190         p = probe_find(device, probenum);
 191         if(!p)
 192                 return;
 193
 194         if(p->name)
 195                 g_free(p->name);
 196         p->name = g_strdup(name);
 197
 198 }
 199
 200
 201 void device_trigger_clear(struct device *device)
 202 {
 203         struct probe *p;
 204         int probenum;
 205
 206         if(device->probes)
 207                 for(probenum = 1; probenum <= g_slist_length(device->probes); probenum++)
 208                 {
 209                         p = probe_find(device, probenum);
 210                         if(p && p->trigger)
 211                         {
 212                                 g_free(p->trigger);
 213                                 p->trigger = NULL;
 214                         }
 215                 }
 216
 217 }
 218
 219
 220 void device_trigger_set(struct device *device, int probenum, char *trigger)
 221 {
 222         struct probe *p;
 223
 224         p = probe_find(device, probenum);
 225         if(!p)
 226                 return;
 227
 228         if(p->trigger)
 229                 g_free(p->trigger);
 230
 231         p->trigger = g_strdup(trigger);
 232
 233 }
 234
 235