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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2007-09-18 12:40:26 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2007-09-18 12:40:26 +0000 |
| commit | 30f0bb1d66f016d6d8366aa483ca12a4724bd599 (patch) | |
| tree | af369b2f1302da6261e5fc8feb7bfe933fba6e89 /src/include/delta.h | |
| parent | f712427135d6c180e413a3a22ba75290bb19a6b5 (diff) | |
| download | ChibiOS-30f0bb1d66f016d6d8366aa483ca12a4724bd599.tar.gz ChibiOS-30f0bb1d66f016d6d8366aa483ca12a4724bd599.tar.bz2 ChibiOS-30f0bb1d66f016d6d8366aa483ca12a4724bd599.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@9 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'src/include/delta.h')
| -rw-r--r-- | src/include/delta.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/include/delta.h b/src/include/delta.h new file mode 100644 index 000000000..2ae4d887f --- /dev/null +++ b/src/include/delta.h @@ -0,0 +1,83 @@ +/*
+ 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 VirtualTimers
+ * @{
+ */
+
+#ifndef _DELTA_H_
+#define _DELTA_H_
+
+#ifdef CH_USE_VIRTUAL_TIMERS
+
+/** Virtual Timer callback function.*/
+typedef void (*t_vtfunc)(void *);
+
+typedef struct VirtualTimer VirtualTimer;
+
+/**
+ * Virtual Timer descriptor structure.
+ */
+struct VirtualTimer {
+ /** Next timer in the delta list.*/
+ VirtualTimer *vt_next;
+ /** Previous timer in the delta list.*/
+ VirtualTimer *vt_prev;
+ /** Time delta before timeout.*/
+ t_time vt_dtime;
+ /** Timer callback function pointer. The pointer is reset to zero after
+ the callback is invoked.*/
+ t_vtfunc vt_func;
+ /** Timer callback function parameter.*/
+ void *vt_par;
+};
+
+/**
+ * Delta List header.
+ * @note The delta list is implemented as a double link bidirectional list in
+ * order to make the unlink time constant, the reset of a virtual timer
+ * is often used in the code. An slower implementation using a single
+ * link list is possible and might be added later with a
+ * \p CH_OPTIMIZE_SPACE option.
+ */
+typedef struct {
+ /** Next timer in the list (the one that will be triggered next).*/
+ VirtualTimer *dl_next;
+ /** Last timer in the list.*/
+ VirtualTimer *dl_prev;
+ /** Not used but it must be set to /p MAXDELTA.*/
+ t_time dl_dtime;
+} DeltaList;
+
+
+extern DeltaList dlist;
+
+/*
+ * Virtual Timers APIs.
+ */
+void chVTInit(void);
+void chVTSetI(VirtualTimer *vtp, t_time time, t_vtfunc vtfunc, void *par);
+void chVTResetI(VirtualTimer *vtp);
+
+#endif /* CH_USE_VIRTUAL_TIMER */
+
+#endif /* _DELTA_H_ */
+
+/** @} */
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