Reorganize project tree.

[libsigrok.git] / src / trigger.c

diff --git a/src/trigger.c b/src/trigger.c
new file mode 100644 (file)
index 0000000..0783bb2
--- /dev/null
+++ b/src/trigger.c
@@ -0,0 +1,96 @@
+/*
+ * This file is part of the libsigrok project.
+ *
+ * Copyright (C) 2014 Bert Vermeulen <bert@biot.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+
+/* * @cond PRIVATE */
+#define LOG_PREFIX "trigger"
+/* * @endcond */
+   
+SR_API struct sr_trigger *sr_trigger_new(const char *name)
+{
+       struct sr_trigger *trig;
+
+       trig = g_malloc0(sizeof(struct sr_trigger));
+       if (name)
+               trig->name = g_strdup(name);
+
+       return trig;
+}
+
+SR_API void sr_trigger_free(struct sr_trigger *trig)
+{
+       struct sr_trigger_stage *stage;
+       GSList *l;
+
+       for (l = trig->stages; l; l = l->next) {
+               stage = l->data;
+               g_slist_free_full(stage->matches, g_free);
+       }
+       g_slist_free_full(trig->stages, g_free);
+
+       g_free(trig->name);
+       g_free(trig);
+}
+
+SR_API struct sr_trigger_stage *sr_trigger_stage_add(struct sr_trigger *trig)
+{
+       struct sr_trigger_stage *stage;
+
+       stage = g_malloc0(sizeof(struct sr_trigger_stage));
+       stage->stage = g_slist_length(trig->stages);
+       trig->stages = g_slist_append(trig->stages, stage);
+
+       return stage;
+}
+
+SR_API int sr_trigger_match_add(struct sr_trigger_stage *stage,
+               struct sr_channel *ch, int trigger_match, float value)
+{
+       struct sr_trigger_match *match;
+
+       if (ch->type == SR_CHANNEL_LOGIC) {
+               if (trigger_match != SR_TRIGGER_ZERO &&
+                               trigger_match != SR_TRIGGER_ONE &&
+                               trigger_match != SR_TRIGGER_RISING &&
+                               trigger_match != SR_TRIGGER_FALLING &&
+                               trigger_match != SR_TRIGGER_EDGE) {
+                       sr_err("Invalid trigger match for a logic channel.");
+                       return SR_ERR_ARG;
+               }
+
+
+       } else if (ch->type == SR_CHANNEL_ANALOG) {
+               if (trigger_match != SR_TRIGGER_FALLING &&
+                               trigger_match != SR_TRIGGER_OVER &&
+                               trigger_match != SR_TRIGGER_UNDER) {
+                       sr_err("Invalid trigger match for an analog channel.");
+                       return SR_ERR_ARG;
+               }
+       }
+
+       match = g_malloc0(sizeof(struct sr_trigger_match));
+       match->channel = ch;
+       match->match = trigger_match;
+       match->value = value;
+       stage->matches = g_slist_append(stage->matches, match);
+
+       return SR_OK;
+}