Diff: cmsis/BUILD/mbed/drivers/Ticker.h

Revision:

189:f392fc9709a3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cmsis/BUILD/mbed/drivers/Ticker.h	Wed Feb 20 22:31:08 2019 +0000
@@ -0,0 +1,163 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef MBED_TICKER_H
+#define MBED_TICKER_H
+
+#include "drivers/TimerEvent.h"
+#include "platform/Callback.h"
+#include "platform/mbed_toolchain.h"
+#include "platform/NonCopyable.h"
+#include "platform/mbed_power_mgmt.h"
+#include "hal/lp_ticker_api.h"
+#include "platform/mbed_critical.h"
+
+namespace mbed {
+/** \addtogroup drivers */
+
+/** A Ticker is used to call a function at a recurring interval
+ *
+ *  You can use as many separate Ticker objects as you require.
+ *
+ * @note Synchronization level: Interrupt safe
+ *
+ * Example:
+ * @code
+ * // Toggle the blinking LED after 5 seconds
+ *
+ * #include "mbed.h"
+ *
+ * Ticker timer;
+ * DigitalOut led1(LED1);
+ * DigitalOut led2(LED2);
+ *
+ * int flip = 0;
+ *
+ * void attime() {
+ *     flip = !flip;
+ * }
+ *
+ * int main() {
+ *     timer.attach(&attime, 5);
+ *     while(1) {
+ *         if(flip == 0) {
+ *             led1 = !led1;
+ *         } else {
+ *             led2 = !led2;
+ *         }
+ *         wait(0.2);
+ *     }
+ * }
+ * @endcode
+ * @ingroup drivers
+ */
+class Ticker : public TimerEvent, private NonCopyable<Ticker> {
+
+public:
+    Ticker() : TimerEvent(), _function(0), _lock_deepsleep(true)
+    {
+    }
+
+    // When low power ticker is in use, then do not disable deep sleep.
+    Ticker(const ticker_data_t *data) : TimerEvent(data), _function(0), _lock_deepsleep(true)
+    {
+#if DEVICE_LPTICKER
+        _lock_deepsleep = (data != get_lp_ticker_data());
+#endif
+    }
+
+    /** Attach a function to be called by the Ticker, specifying the interval in seconds
+     *
+     *  @param func pointer to the function to be called
+     *  @param t the time between calls in seconds
+     */
+    void attach(Callback<void()> func, float t)
+    {
+        attach_us(func, t * 1000000.0f);
+    }
+
+    /** Attach a member function to be called by the Ticker, specifying the interval in seconds
+     *
+     *  @param obj pointer to the object to call the member function on
+     *  @param method pointer to the member function to be called
+     *  @param t the time between calls in seconds
+     *  @deprecated
+     *      The attach function does not support cv-qualifiers. Replaced by
+     *      attach(callback(obj, method), t).
+     */
+    template<typename T, typename M>
+    MBED_DEPRECATED_SINCE("mbed-os-5.1",
+                          "The attach function does not support cv-qualifiers. Replaced by "
+                          "attach(callback(obj, method), t).")
+    void attach(T *obj, M method, float t)
+    {
+        attach(callback(obj, method), t);
+    }
+
+    /** Attach a function to be called by the Ticker, specifying the interval in microseconds
+     *
+     *  @param func pointer to the function to be called
+     *  @param t the time between calls in micro-seconds
+     *
+     *  @note setting @a t to a value shorter than it takes to process the ticker callback
+     *  causes the system to hang. Ticker callback is called constantly with no time
+     *  for threads scheduling.
+     *
+     */
+    void attach_us(Callback<void()> func, us_timestamp_t t);
+
+    /** Attach a member function to be called by the Ticker, specifying the interval in microseconds
+     *
+     *  @param obj pointer to the object to call the member function on
+     *  @param method pointer to the member function to be called
+     *  @param t the time between calls in microseconds
+     *  @deprecated
+     *      The attach_us function does not support cv-qualifiers. Replaced by
+     *      attach_us(callback(obj, method), t).
+     */
+    template<typename T, typename M>
+    MBED_DEPRECATED_SINCE("mbed-os-5.1",
+                          "The attach_us function does not support cv-qualifiers. Replaced by "
+                          "attach_us(callback(obj, method), t).")
+    void attach_us(T *obj, M method, us_timestamp_t t)
+    {
+        attach_us(Callback<void()>(obj, method), t);
+    }
+
+    virtual ~Ticker()
+    {
+        detach();
+    }
+
+    /** Detach the function
+     */
+    void detach();
+
+#if !defined(DOXYGEN_ONLY)
+protected:
+    void setup(us_timestamp_t t);
+    virtual void handler();
+
+protected:
+    us_timestamp_t         _delay;  /**< Time delay (in microseconds) for resetting the multishot callback. */
+    Callback<void()>    _function;  /**< Callback. */
+    bool          _lock_deepsleep;  /**< Flag which indicates if deep sleep should be disabled. */
+#endif
+};
+
+} // namespace mbed
+
+#endif