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Timeout.h

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2006-2013 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 #ifndef MBED_TIMEOUT_H
00017 #define MBED_TIMEOUT_H
00018 
00019 #include "Ticker.h"
00020 
00021 namespace mbed {
00022 
00023 /** A Timeout is used to call a function at a point in the future
00024  *
00025  * You can use as many seperate Timeout objects as you require.
00026  *
00027  * Example:
00028  * @code
00029  * // Blink until timeout.
00030  *
00031  * #include "mbed.h"
00032  *
00033  * Timeout timeout;
00034  * DigitalOut led(LED1);
00035  *
00036  * int on = 1;
00037  *
00038  * void attimeout() {
00039  *     on = 0;
00040  * }
00041  *
00042  * int main() {
00043  *     timeout.attach(&attimeout, 5);
00044  *     while(on) {
00045  *         led = !led;
00046  *         wait(0.2);
00047  *     }
00048  * }
00049  * @endcode
00050  */
00051 class Timeout : public Ticker {
00052 
00053 protected:
00054     virtual void handler();
00055 };
00056 
00057 } // namespace mbed
00058 
00059 #endif