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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2009-08-16 13:07:24 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2009-08-16 13:07:24 +0000 |
| commit | 1ea7355d85e316aadfd90468b3e808bb3dc95ee9 (patch) | |
| tree | 7d9c3cd8733553982b9d0a55e1ddff036a6d9b4c /os/various/evtimer.c | |
| parent | 51e3bee83961243f5f0ba01537630f5a3d070c36 (diff) | |
| download | ChibiOS-1ea7355d85e316aadfd90468b3e808bb3dc95ee9.tar.gz ChibiOS-1ea7355d85e316aadfd90468b3e808bb3dc95ee9.tar.bz2 ChibiOS-1ea7355d85e316aadfd90468b3e808bb3dc95ee9.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1073 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/various/evtimer.c')
| -rw-r--r-- | os/various/evtimer.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/os/various/evtimer.c b/os/various/evtimer.c new file mode 100644 index 000000000..114a9b3a6 --- /dev/null +++ b/os/various/evtimer.c @@ -0,0 +1,70 @@ +/*
+ 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/>.
+*/
+
+/**
+ * @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;
+
+ chEvtBroadcastI(&etp->et_es);
+ chVTSetI(&etp->et_vt, etp->et_interval, tmrcb, etp);
+}
+
+/**
+ * @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) {
+
+ chSysLock();
+
+ if (chVTIsArmedI(&etp->et_vt))
+ chVTResetI(&etp->et_vt);
+
+ chSysUnlock();
+}
+
+/** @} */
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