1 files changed, 68 insertions, 0 deletions
diff --git a/os/various/evtimer.h b/os/various/evtimer.h
new file mode 100644
index 000000000..613c688a6
--- /dev/null
+++ b/os/various/evtimer.h
@@ -0,0 +1,68 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/**
+ * @file    evtimer.h
+ * @brief   Events Generator Timer structures and macros.
+ *
+ * @addtogroup event_timer
+ * @{
+ */
+
+#ifndef _EVTIMER_H_
+#define _EVTIMER_H_
+
+
+/*
+ * Module dependencies check.
+ */
+#if !CH_USE_EVENTS
+#error "Event Timers require CH_USE_EVENTS"
+#endif
+
+/**
+ * @brief Event timer structure.
+ */
+typedef struct {
+  VirtualTimer  et_vt;
+  EventSource   et_es;
+  systime_t     et_interval;
+} EvTimer;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void evtStart(EvTimer *etp);
+  void evtStop(EvTimer *etp);
+#ifdef __cplusplus
+}
+#endif
+
+/**
+ * @brief Initializes an @p EvTimer structure.
+ *
+ * @param etp the EvTimer structure to be initialized
+ * @param time the interval in system ticks
+ */
+#define evtInit(etp, time) {                                            \
+  chEvtInit(&(etp)->et_es);                                             \
+  (etp)->et_vt.vt_func = NULL;                                          \
+  (etp)->et_interval = (time);                                          \
+}
+
+#endif /* _EVTIMER_H_ */
+
+/** @} */