1 files changed, 95 insertions, 0 deletions
diff --git a/src/include/events.h b/src/include/events.h
new file mode 100644
index 000000000..c5dfe7438
--- /dev/null
+++ b/src/include/events.h
@@ -0,0 +1,95 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT 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.
+
+    ChibiOS/RT 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/>.
+*/
+
+/**
+ * @addtogroup Events
+ * @{
+ */
+
+#ifndef _EVENTS_H_
+#define _EVENTS_H_
+
+#ifdef CH_USE_EVENTS
+
+/** All events allowed mask.*/
+#define ALL_EVENTS -1
+
+typedef struct EventListener EventListener;
+
+/**
+ * Event Listener structure.
+ */
+struct EventListener {
+  /** Next Event Listener registered on the Event Source.*/
+  EventListener     *el_next;
+  /** Thread interested in the Event Source.*/
+  Thread            *el_listener;
+  /** Event identifier associated by the thread to the Event Source.*/
+  t_eventid         el_id;
+};
+
+/**
+ * Event Source structure.
+ */
+typedef struct EventSource {
+  /** First Event Listener registered on the Event Source.*/
+  EventListener     *es_next;
+} EventSource;
+
+/** Returns the event mask from the event identifier.*/
+#define EventMask(eid) (1 << (eid))
+
+/**
+ * Initializes an Event Source.
+ * @param esp pointer to the \p EventSource structure
+ * @note Can be called with interrupts disabled or enabled.
+ */
+#define chEvtInit(esp) \
+        ((esp)->es_next = (EventListener *)(esp))
+
+/**
+ * Verifies if there is at least one \p EventListener registered on the
+ * \p EventSource.
+ * @param esp pointer to the \p EventSource structure
+ * @note Can be called with interrupts disabled or enabled.
+ */
+#define chEvtIsListening(esp) \
+  		((esp) != (EventSource *)(esp)->es_next)
+
+
+/** Event Handler callback function.*/
+typedef void (*t_evhandler)(t_eventid);
+
+void chEvtRegister(EventSource *esp, EventListener *elp, t_eventid eid);
+void chEvtUnregister(EventSource *esp, EventListener *elp);
+void chEvtClear(t_eventmask mask);
+void chEvtSend(EventSource *esp);
+void chEvtSendI(EventSource *esp);
+t_eventid chEvtWait(t_eventmask ewmask, t_evhandler handlers[]);
+#ifdef CH_USE_EVENTS_TIMEOUT
+t_eventid chEvtWaitTimeout(t_eventmask ewmask,
+                           t_evhandler handlers[],
+                           t_time time);
+#endif
+
+#endif /* CH_USE_EVENTS */
+
+#endif /* _EVENTS_H_ */
+
+/** @} */