Diff: mbed-os/rtos/RtosTimer.h

Revision:

0:8fdf9a60065b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os/rtos/RtosTimer.h	Wed Oct 10 00:33:53 2018 +0000
@@ -0,0 +1,188 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2012 ARM Limited
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef RTOS_TIMER_H
+#define RTOS_TIMER_H
+
+#include <stdint.h>
+#include "cmsis_os2.h"
+#include "mbed_rtos_storage.h"
+#include "platform/Callback.h"
+#include "platform/NonCopyable.h"
+#include "platform/mbed_toolchain.h"
+#include "mbed_rtos1_types.h"
+
+namespace rtos {
+/** \addtogroup rtos */
+/** @{*/
+/**
+ * \defgroup rtos_RtosTimer RtosTimer class
+ * @{
+ */
+ 
+/** The RtosTimer class allow creating and and controlling of timer functions in the system.
+ A timer function is called when a time period expires whereby both on-shot and
+ periodic timers are possible. A timer can be started, restarted, or stopped.
+
+ Timers are handled in the thread osTimerThread.
+ Callback functions run under control of this thread and may use CMSIS-RTOS API calls.
+
+ @deprecated
+ The RtosTimer has been superseded by the EventQueue. The RtosTimer and EventQueue duplicate
+ the functionality of timing events outside of interrupt context, however the EventQueue
+ has additional features to handle deferring other events to multiple contexts.
+
+ For an example, the following code shows a simple use of the RtosTimer:
+ @code
+ DigitalOut led(LED1);
+ void blink() {
+     led = !led;
+ }
+
+ RtosTimer timer(&blink);
+ int main() {
+     timer.start(1000); // call blink every 1s
+     wait_ms(5000);
+     timer.stop(); // stop after 5s
+ }
+ @endcode
+
+ This is the above example rewritten to use the EventQueue:
+ @code
+ DigitalOut led(LED1);
+ void blink() {
+     led = !led;
+ }
+
+ EventQueue queue(4*EVENTS_EVENT_SIZE);
+ int main() {
+    int blink_id = queue.call_every(1000, &blink); // call blink every 1s
+    queue.dispatch(5000);
+    queue.cancel(blink_id); // stop after 5s
+ }
+ @endcode
+
+ @note
+ Memory considerations: The timer control structures will be created on current thread's stack, both for the mbed OS
+ and underlying RTOS objects (static or dynamic RTOS memory pools are not being used).
+*/
+class RtosTimer : private mbed::NonCopyable<RtosTimer> {
+public:
+    /** Create timer.
+      @param   func      function to be executed by this timer.
+      @param   type      osTimerOnce for one-shot or osTimerPeriodic for periodic behaviour. (default: osTimerPeriodic)
+      @param   argument  argument to the timer call back function. (default: NULL)
+      @deprecated Replaced with RtosTimer(Callback<void()>, os_timer_type)
+      @deprecated
+          The RtosTimer has been superseded by the EventQueue. See RtosTimer.h for more details
+
+      @note You cannot call this function from ISR context.
+     */
+    MBED_DEPRECATED_SINCE("mbed-os-5.1",
+        "Replaced with RtosTimer(Callback<void()>, os_timer_type)")
+    MBED_DEPRECATED_SINCE("mbed-os-5.2",
+        "The RtosTimer has been superseded by the EventQueue. See RtosTimer.h for more details")
+    RtosTimer(void (*func)(void const *argument), os_timer_type type=osTimerPeriodic, void *argument=NULL) {
+        constructor(mbed::callback((void (*)(void *))func, argument), type);
+    }
+    
+    /** Create timer.
+      @param   func      function to be executed by this timer.
+      @param   type      osTimerOnce for one-shot or osTimerPeriodic for periodic behaviour. (default: osTimerPeriodic)
+      @deprecated
+          The RtosTimer has been superseded by the EventQueue. See RtosTimer.h for more details
+
+      @note You cannot call this function from ISR context.
+    */
+    MBED_DEPRECATED_SINCE("mbed-os-5.2",
+        "The RtosTimer has been superseded by the EventQueue. See RtosTimer.h for more details")
+    RtosTimer(mbed::Callback<void()> func, os_timer_type type=osTimerPeriodic) {
+        constructor(func, type);
+    }
+    
+    /** Create timer.
+      @param   obj       pointer to the object to call the member function on.
+      @param   method    member function to be executed by this timer.
+      @param   type      osTimerOnce for one-shot or osTimerPeriodic for periodic behaviour. (default: osTimerPeriodic)
+      @deprecated
+          The RtosTimer constructor does not support cv-qualifiers. Replaced by
+          RtosTimer(callback(obj, method), os_timer_type).
+      @deprecated
+          The RtosTimer has been superseded by the EventQueue. See RtosTimer.h for more details
+
+      @note You cannot call this function from ISR context.
+    */
+    template <typename T, typename M>
+    MBED_DEPRECATED_SINCE("mbed-os-5.1",
+        "The RtosTimer constructor does not support cv-qualifiers. Replaced by "
+        "RtosTimer(callback(obj, method), os_timer_type).")
+    MBED_DEPRECATED_SINCE("mbed-os-5.2",
+        "The RtosTimer has been superseded by the EventQueue. See RtosTimer.h for more details")
+    RtosTimer(T *obj, M method, os_timer_type type=osTimerPeriodic) {
+        constructor(mbed::callback(obj, method), type);
+    }
+
+    /** Stop the timer.
+      @return  status code that indicates the execution status of the function:
+          @a osOK the timer has been stopped.
+          @a osErrorISR @a stop cannot be called from interrupt service routines.
+          @a osErrorParameter internal error.
+          @a osErrorResource the timer is not running.
+
+      @note You cannot call this function from ISR context.
+    */
+    osStatus stop(void);
+
+    /** Start or restart the timer.
+      @param   millisec  non-zero value of the timer.
+      @return  status code that indicates the execution status of the function:
+          @a osOK the timer has been started or restarted.
+          @a osErrorISR @a start cannot be called from interrupt service routines.
+          @a osErrorParameter internal error or incorrect parameter value.
+          @a osErrorResource internal error (the timer is in an invalid timer state).
+
+      @note You cannot call this function from ISR context.
+    */
+    osStatus start(uint32_t millisec);
+
+    /** RtosTimer destructor
+     *
+     * @note You cannot call this function from ISR context.
+     */
+    ~RtosTimer();
+
+private:
+    // Required to share definitions without
+    // delegated constructors
+    void constructor(mbed::Callback<void()> func, os_timer_type type);
+
+    osTimerId_t _id;
+    mbed_rtos_storage_timer_t _obj_mem;
+    mbed::Callback<void()> _function;
+};
+/** @}*/
+/** @}*/
+
+}
+
+#endif
+
+