diff options
Diffstat (limited to 'os/nil/ports/ARMCMx/nilcore_timer.h')
-rw-r--r-- | os/nil/ports/ARMCMx/nilcore_timer.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/os/nil/ports/ARMCMx/nilcore_timer.h b/os/nil/ports/ARMCMx/nilcore_timer.h new file mode 100644 index 000000000..1a0f98ac0 --- /dev/null +++ b/os/nil/ports/ARMCMx/nilcore_timer.h @@ -0,0 +1,135 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+ 2011,2012,2013 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 ARMCMx/chcore_timer.h
+ * @brief System timer header file.
+ *
+ * @addtogroup ARMCMx_TIMER
+ * @{
+ */
+
+#ifndef _CHCORE_TIMER_H_
+#define _CHCORE_TIMER_H_
+
+#if defined(CH_PORT_DO_NOT_USE_ST)
+/* If, for some reason, the use of the HAL-provided ST timer port interface
+ is not wanted, it is possible to provide the timer interface into a custom
+ module.*/
+#include "chcore_timer_ext.h"
+
+#else /* !defined(CH_PORT_DO_NOT_USE_ST) */
+
+/* This is the only header in the HAL designed to be include-able alone.*/
+#include "st.h"
+
+/*===========================================================================*/
+/* Module constants. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module pre-compile time settings. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module data structures and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module macros. */
+/*===========================================================================*/
+
+/**
+ * @brief Starts the alarm.
+ * @note Makes sure that no spurious alarms are triggered after
+ * this call.
+ *
+ * @param[in] time the time to be set for the first alarm
+ *
+ * @notapi
+ */
+#define port_timer_start_alarm(time) { \
+ chDbgAssert(stIsAlarmActive() == false, "already active"); \
+ stStartAlarm(time); \
+}
+
+/**
+ * @brief Stops the alarm interrupt.
+ *
+ * @notapi
+ */
+#define port_timer_stop_alarm() { \
+ chDbgAssert(stIsAlarmActive() != false, "not active"); \
+ stStopAlarm(); \
+}
+
+/**
+ * @brief Sets the alarm time.
+ *
+ * @param[in] time the time to be set for the next alarm
+ *
+ * @notapi
+ */
+#define port_timer_set_alarm(time) { \
+ chDbgAssert(stIsAlarmActive() != false, "not active"); \
+ stSetAlarm(time); \
+}
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module inline functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Returns the system time.
+ *
+ * @return The system time.
+ *
+ * @notapi
+ */
+static inline systime_t port_timer_get_time(void) {
+
+ return stGetCounter();
+}
+
+/**
+ * @brief Returns the current alarm time.
+ *
+ * @return The currently set alarm time.
+ *
+ * @notapi
+ */
+static inline systime_t port_timer_get_alarm(void) {
+
+ return stGetAlarm();
+}
+
+#endif /* !defined(CH_PORT_DO_NOT_USE_ST) */
+
+#endif /* _CHCORE_TIMER_H_ */
+
+/** @} */
|