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Committer:
jhon309
Date:
Thu Aug 20 00:37:14 2015 +0000
Revision:
0:666850d06c9f
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jhon309 0:666850d06c9f 1 /* mbed Microcontroller Library
jhon309 0:666850d06c9f 2 * Copyright (c) 2006-2013 ARM Limited
jhon309 0:666850d06c9f 3 *
jhon309 0:666850d06c9f 4 * Licensed under the Apache License, Version 2.0 (the "License");
jhon309 0:666850d06c9f 5 * you may not use this file except in compliance with the License.
jhon309 0:666850d06c9f 6 * You may obtain a copy of the License at
jhon309 0:666850d06c9f 7 *
jhon309 0:666850d06c9f 8 * http://www.apache.org/licenses/LICENSE-2.0
jhon309 0:666850d06c9f 9 *
jhon309 0:666850d06c9f 10 * Unless required by applicable law or agreed to in writing, software
jhon309 0:666850d06c9f 11 * distributed under the License is distributed on an "AS IS" BASIS,
jhon309 0:666850d06c9f 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
jhon309 0:666850d06c9f 13 * See the License for the specific language governing permissions and
jhon309 0:666850d06c9f 14 * limitations under the License.
jhon309 0:666850d06c9f 15 */
jhon309 0:666850d06c9f 16 #ifndef MBED_TIMEOUT_H
jhon309 0:666850d06c9f 17 #define MBED_TIMEOUT_H
jhon309 0:666850d06c9f 18
jhon309 0:666850d06c9f 19 #include "Ticker.h"
jhon309 0:666850d06c9f 20
jhon309 0:666850d06c9f 21 namespace mbed {
jhon309 0:666850d06c9f 22
jhon309 0:666850d06c9f 23 /** A Timeout is used to call a function at a point in the future
jhon309 0:666850d06c9f 24 *
jhon309 0:666850d06c9f 25 * You can use as many seperate Timeout objects as you require.
jhon309 0:666850d06c9f 26 *
jhon309 0:666850d06c9f 27 * Example:
jhon309 0:666850d06c9f 28 * @code
jhon309 0:666850d06c9f 29 * // Blink until timeout.
jhon309 0:666850d06c9f 30 *
jhon309 0:666850d06c9f 31 * #include "mbed.h"
jhon309 0:666850d06c9f 32 *
jhon309 0:666850d06c9f 33 * Timeout timeout;
jhon309 0:666850d06c9f 34 * DigitalOut led(LED1);
jhon309 0:666850d06c9f 35 *
jhon309 0:666850d06c9f 36 * int on = 1;
jhon309 0:666850d06c9f 37 *
jhon309 0:666850d06c9f 38 * void attimeout() {
jhon309 0:666850d06c9f 39 * on = 0;
jhon309 0:666850d06c9f 40 * }
jhon309 0:666850d06c9f 41 *
jhon309 0:666850d06c9f 42 * int main() {
jhon309 0:666850d06c9f 43 * timeout.attach(&attimeout, 5);
jhon309 0:666850d06c9f 44 * while(on) {
jhon309 0:666850d06c9f 45 * led = !led;
jhon309 0:666850d06c9f 46 * wait(0.2);
jhon309 0:666850d06c9f 47 * }
jhon309 0:666850d06c9f 48 * }
jhon309 0:666850d06c9f 49 * @endcode
jhon309 0:666850d06c9f 50 */
jhon309 0:666850d06c9f 51 class Timeout : public Ticker {
jhon309 0:666850d06c9f 52
jhon309 0:666850d06c9f 53 protected:
jhon309 0:666850d06c9f 54 virtual void handler();
jhon309 0:666850d06c9f 55 };
jhon309 0:666850d06c9f 56
jhon309 0:666850d06c9f 57 } // namespace mbed
jhon309 0:666850d06c9f 58
jhon309 0:666850d06c9f 59 #endif