Diff: system/timer.h

Revision:

0:6cc76d70e2a1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/system/timer.h	Thu Apr 06 21:59:50 2017 +0000
@@ -0,0 +1,107 @@
+/*
+ / _____)             _              | |
+( (____  _____ ____ _| |_ _____  ____| |__
+ \____ \| ___ |    (_   _) ___ |/ ___)  _ \
+ _____) ) ____| | | || |_| ____( (___| | | |
+(______/|_____)_|_|_| \__)_____)\____)_| |_|
+    (C)2013 Semtech
+
+Description: Timer objects and scheduling management
+
+License: Revised BSD License, see LICENSE.TXT file include in the project
+
+Maintainer: Miguel Luis and Gregory Cristian
+*/
+#ifndef __TIMER_H__
+#define __TIMER_H__
+
+#include "mbed.h"
+
+/*!
+ * \brief Timer object description
+ */
+typedef struct TimerEvent_s
+{
+    uint32_t value;
+    void ( *Callback )( void );
+    Ticker Timer;
+}TimerEvent_t;
+
+/*!
+ * \brief Timer time variable definition
+ */
+#ifndef TimerTime_t
+typedef uint32_t TimerTime_t;
+#endif
+
+/*!
+ * \brief Inializes the timer used to get current time.
+ *
+ * \remark Current time corresponds to the time since system startup
+ */
+void TimerTimeCounterInit( void );
+
+/*!
+ * \brief Initializes the timer object
+ *
+ * \remark TimerSetValue function must be called before starting the timer.
+ *         this function initializes timestamp and reload value at 0.
+ *
+ * \param [IN] obj          Structure containing the timer object parameters
+ * \param [IN] callback     Function callback called at the end of the timeout
+ */
+void TimerInit( TimerEvent_t *obj, void ( *callback )( void ) );
+
+/*!
+ * \brief Starts and adds the timer object to the list of timer events
+ *
+ * \param [IN] obj Structure containing the timer object parameters
+ */
+void TimerStart( TimerEvent_t *obj );
+
+/*!
+ * \brief Stops and removes the timer object from the list of timer events
+ *
+ * \param [IN] obj Structure containing the timer object parameters
+ */
+void TimerStop( TimerEvent_t *obj );
+
+/*!
+ * \brief Resets the timer object
+ *
+ * \param [IN] obj Structure containing the timer object parameters
+ */
+void TimerReset( TimerEvent_t *obj );
+
+/*!
+ * \brief Set timer new timeout value
+ *
+ * \param [IN] obj   Structure containing the timer object parameters
+ * \param [IN] value New timer timeout value
+ */
+void TimerSetValue( TimerEvent_t *obj, uint32_t value );
+
+/*!
+ * \brief Read the current time
+ *
+ * \retval time returns current time
+ */
+TimerTime_t TimerGetCurrentTime( void );
+
+/*!
+ * \brief Return the Time elapsed since a fix moment in Time
+ *
+ * \param [IN] savedTime    fix moment in Time
+ * \retval time             returns elapsed time
+ */
+TimerTime_t TimerGetElapsedTime( TimerTime_t savedTime );
+
+/*!
+ * \brief Return the Time elapsed since a fix moment in Time
+ *
+ * \param [IN] eventInFuture    fix moment in the future
+ * \retval time             returns difference between now and future event
+ */
+TimerTime_t TimerGetFutureTime( TimerTime_t eventInFuture );
+
+#endif // __TIMER_H__