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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-06-15 15:58:20 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-06-15 15:58:20 +0000 |
| commit | 7c68ef157d009f9932ac47ba21ba5d74e321623f (patch) | |
| tree | 6c2442ca44cd090656ec3059ffb959f3d747e18d /os/various/evtimer.c | |
| parent | 076746af63d317f8e96766b9137a65679f60463f (diff) | |
| parent | e0d850113610f3efa0c0ac4946901f683e5e7332 (diff) | |
| download | ChibiOS-7c68ef157d009f9932ac47ba21ba5d74e321623f.tar.gz ChibiOS-7c68ef157d009f9932ac47ba21ba5d74e321623f.tar.bz2 ChibiOS-7c68ef157d009f9932ac47ba21ba5d74e321623f.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@5854 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/various/evtimer.c')
| -rw-r--r-- | os/various/evtimer.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/os/various/evtimer.c b/os/various/evtimer.c new file mode 100644 index 000000000..a077529da --- /dev/null +++ b/os/various/evtimer.c @@ -0,0 +1,64 @@ +/*
+ 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.c
+ * @brief Events Generator Timer code.
+ *
+ * @addtogroup event_timer
+ * @{
+ */
+
+#include "ch.h"
+#include "evtimer.h"
+
+static void tmrcb(void *p) {
+ EvTimer *etp = p;
+
+ chSysLockFromIsr();
+ chEvtBroadcastI(&etp->et_es);
+ chVTSetI(&etp->et_vt, etp->et_interval, tmrcb, etp);
+ chSysUnlockFromIsr();
+}
+
+/**
+ * @brief Starts the timer
+ * @details If the timer was already running then the function has no effect.
+ *
+ * @param etp pointer to an initialized @p EvTimer structure.
+ */
+void evtStart(EvTimer *etp) {
+
+ chSysLock();
+
+ if (!chVTIsArmedI(&etp->et_vt))
+ chVTSetI(&etp->et_vt, etp->et_interval, tmrcb, etp);
+
+ chSysUnlock();
+}
+
+/**
+ * @brief Stops the timer.
+ * @details If the timer was already stopped then the function has no effect.
+ *
+ * @param etp pointer to an initialized @p EvTimer structure.
+ */
+void evtStop(EvTimer *etp) {
+
+ chVTReset(&etp->et_vt);
+}
+
+/** @} */
|