1 /* mbed Microcontroller Library
2 * Copyright (c) 2006-2013 ARM Limited
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
23 /** A general purpose timer
27 * // Count the time to toggle a LED
32 * DigitalOut led(LED1);
37 * begin = timer.read_us();
39 * end = timer.read_us();
40 * printf("Toggle the led takes %d us", end - begin);
57 /** Reset the timer to 0.
59 * If it was already counting, it will continue
63 /** Get the time passed in seconds
67 /** Get the time passed in mili-seconds
71 /** Get the time passed in micro-seconds
81 int _running; // whether the timer is running
82 unsigned int _start; // the start time of the latest slice
83 int _time; // any accumulated time from previous slices