tmk_core/tool/mbed/mbed-sdk/libraries/mbed/api/wait_api.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_WAIT_API_H
  17 #define MBED_WAIT_API_H
  18
  19 #ifdef __cplusplus
  20 extern "C" {
  21 #endif
  22
  23 /** Generic wait functions.
  24  *
  25  * These provide simple NOP type wait capabilities.
  26  *
  27  * Example:
  28  * @code
  29  * #include "mbed.h"
  30  *
  31  * DigitalOut heartbeat(LED1);
  32  *
  33  * int main() {
  34  *     while (1) {
  35  *         heartbeat = 1;
  36  *         wait(0.5);
  37  *         heartbeat = 0;
  38  *         wait(0.5);
  39  *     }
  40  * }
  41  */
  42
  43 /** Waits for a number of seconds, with microsecond resolution (within
  44  *  the accuracy of single precision floating point).
  45  *
  46  *  @param s number of seconds to wait
  47  */
  48 void wait(float s);
  49
  50 /** Waits a number of milliseconds.
  51  *
  52  *  @param ms the whole number of milliseconds to wait
  53  */
  54 void wait_ms(int ms);
  55
  56 /** Waits a number of microseconds.
  57  *
  58  *  @param us the whole number of microseconds to wait
  59  */
  60 void wait_us(int us);
  61
  62 #ifdef __cplusplus
  63 }
  64 #endif
  65
  66 #endif