tmk_core/tool/mbed/mbed-sdk/libraries/mbed/api/Timeout.h

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