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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 | void device_scan(void) | |
29 | { | |
30 | GSList *plugins, *l; | |
31 | struct device_plugin *plugin; | |
32 | int num_devices, num_probes, i; | |
33 | ||
34 | plugins = list_hwplugins(); | |
35 | ||
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 | plugin = l->data; | |
43 | g_message("initializing %s plugin", plugin->name); | |
44 | num_devices = plugin->init(NULL); | |
45 | for (i = 0; i < num_devices; i++) { | |
46 | num_probes = (int)plugin->get_device_info(i, DI_NUM_PROBES); | |
47 | device_new(plugin, i, num_probes); | |
48 | } | |
49 | } | |
50 | } | |
51 | ||
52 | void device_close_all(void) | |
53 | { | |
54 | struct device *device; | |
55 | ||
56 | while (devices) { | |
57 | device = devices->data; | |
58 | if (device->plugin) | |
59 | device->plugin->close(device->plugin_index); | |
60 | device_destroy(device); | |
61 | } | |
62 | } | |
63 | ||
64 | GSList *device_list(void) | |
65 | { | |
66 | return devices; | |
67 | } | |
68 | ||
69 | struct device *device_new(struct device_plugin *plugin, int plugin_index, int num_probes) | |
70 | { | |
71 | struct device *device; | |
72 | int i; | |
73 | char probename[16]; | |
74 | ||
75 | device = g_malloc0(sizeof(struct device)); | |
76 | device->plugin = plugin; | |
77 | device->plugin_index = plugin_index; | |
78 | devices = g_slist_append(devices, device); | |
79 | ||
80 | for (i = 0; i < num_probes; i++) { | |
81 | snprintf(probename, 16, "%d", i + 1); | |
82 | device_probe_add(device, probename); | |
83 | } | |
84 | ||
85 | return device; | |
86 | } | |
87 | ||
88 | void device_clear(struct device *device) | |
89 | { | |
90 | unsigned int pnum; | |
91 | ||
92 | /* TODO: Plugin-specific clear call? */ | |
93 | ||
94 | if (!device->probes) | |
95 | return; | |
96 | ||
97 | for (pnum = 1; pnum <= g_slist_length(device->probes); pnum++) | |
98 | device_probe_clear(device, pnum); | |
99 | } | |
100 | ||
101 | void device_destroy(struct device *device) | |
102 | { | |
103 | unsigned int pnum; | |
104 | ||
105 | /* | |
106 | * TODO: Plugin-specific destroy call, need to decrease refcount | |
107 | * in plugin. | |
108 | */ | |
109 | ||
110 | devices = g_slist_remove(devices, device); | |
111 | if (device->probes) { | |
112 | for (pnum = 1; pnum <= g_slist_length(device->probes); pnum++) | |
113 | device_probe_clear(device, pnum); | |
114 | g_slist_free(device->probes); | |
115 | } | |
116 | g_free(device); | |
117 | } | |
118 | ||
119 | void device_probe_clear(struct device *device, int probenum) | |
120 | { | |
121 | struct probe *p; | |
122 | ||
123 | p = probe_find(device, probenum); | |
124 | if (!p) | |
125 | return; | |
126 | ||
127 | if (p->name) { | |
128 | g_free(p->name); | |
129 | p->name = NULL; | |
130 | } | |
131 | ||
132 | if (p->trigger) { | |
133 | g_free(p->trigger); | |
134 | p->trigger = NULL; | |
135 | } | |
136 | } | |
137 | ||
138 | void device_probe_add(struct device *device, char *name) | |
139 | { | |
140 | struct probe *p; | |
141 | ||
142 | p = g_malloc0(sizeof(struct probe)); | |
143 | p->index = g_slist_length(device->probes) + 1; | |
144 | p->enabled = TRUE; | |
145 | p->name = g_strdup(name); | |
146 | p->trigger = NULL; | |
147 | device->probes = g_slist_append(device->probes, p); | |
148 | } | |
149 | ||
150 | struct probe *probe_find(struct device *device, int probenum) | |
151 | { | |
152 | GSList *l; | |
153 | struct probe *p, *found_probe; | |
154 | ||
155 | found_probe = NULL; | |
156 | for (l = device->probes; l; l = l->next) { | |
157 | p = l->data; | |
158 | if (p->index == probenum) { | |
159 | found_probe = p; | |
160 | break; | |
161 | } | |
162 | } | |
163 | ||
164 | return found_probe; | |
165 | } | |
166 | ||
167 | void device_probe_name(struct device *device, int probenum, char *name) | |
168 | { | |
169 | struct probe *p; | |
170 | ||
171 | p = probe_find(device, probenum); | |
172 | if (!p) | |
173 | return; | |
174 | ||
175 | if (p->name) | |
176 | g_free(p->name); | |
177 | p->name = g_strdup(name); | |
178 | } | |
179 | ||
180 | void device_trigger_clear(struct device *device) | |
181 | { | |
182 | struct probe *p; | |
183 | unsigned int pnum; | |
184 | ||
185 | if (!device->probes) | |
186 | return; | |
187 | ||
188 | for (pnum = 1; pnum <= g_slist_length(device->probes); pnum++) { | |
189 | p = probe_find(device, pnum); | |
190 | if (p && p->trigger) { | |
191 | g_free(p->trigger); | |
192 | p->trigger = NULL; | |
193 | } | |
194 | } | |
195 | } | |
196 | ||
197 | void device_trigger_set(struct device *device, int probenum, char *trigger) | |
198 | { | |
199 | struct probe *p; | |
200 | ||
201 | p = probe_find(device, probenum); | |
202 | if (!p) | |
203 | return; | |
204 | ||
205 | if (p->trigger) | |
206 | g_free(p->trigger); | |
207 | ||
208 | p->trigger = g_strdup(trigger); | |
209 | } |