George Roussos / BLE_iBeacon_Exercise

Birkbeck College Mobile and Ubiquitous Computing IoT Lab Exercise 2

Dependencies:   BLE_API_Native_blog

mbed/Timer.h@0:e8fdba0ed044, 2015-03-07 (annotated)

Committer:
gkroussos
Date:
Sat Mar 07 16:34:53 2015 +0000
Revision:
0:e8fdba0ed044
MUC IoT Workshop v1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gkroussos 0:e8fdba0ed044 1 /* mbed Microcontroller Library
gkroussos 0:e8fdba0ed044 2 * Copyright (c) 2006-2013 ARM Limited
gkroussos 0:e8fdba0ed044 3 *
gkroussos 0:e8fdba0ed044 4 * Licensed under the Apache License, Version 2.0 (the "License");
gkroussos 0:e8fdba0ed044 5 * you may not use this file except in compliance with the License.
gkroussos 0:e8fdba0ed044 6 * You may obtain a copy of the License at
gkroussos 0:e8fdba0ed044 7 *
gkroussos 0:e8fdba0ed044 8 * http://www.apache.org/licenses/LICENSE-2.0
gkroussos 0:e8fdba0ed044 9 *
gkroussos 0:e8fdba0ed044 10 * Unless required by applicable law or agreed to in writing, software
gkroussos 0:e8fdba0ed044 11 * distributed under the License is distributed on an "AS IS" BASIS,
gkroussos 0:e8fdba0ed044 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
gkroussos 0:e8fdba0ed044 13 * See the License for the specific language governing permissions and
gkroussos 0:e8fdba0ed044 14 * limitations under the License.
gkroussos 0:e8fdba0ed044 15 */
gkroussos 0:e8fdba0ed044 16 #ifndef MBED_TIMER_H
gkroussos 0:e8fdba0ed044 17 #define MBED_TIMER_H
gkroussos 0:e8fdba0ed044 18
gkroussos 0:e8fdba0ed044 19 #include "platform.h"
gkroussos 0:e8fdba0ed044 20
gkroussos 0:e8fdba0ed044 21 namespace mbed {
gkroussos 0:e8fdba0ed044 22
gkroussos 0:e8fdba0ed044 23 /** A general purpose timer
gkroussos 0:e8fdba0ed044 24 *
gkroussos 0:e8fdba0ed044 25 * Example:
gkroussos 0:e8fdba0ed044 26 * @code
gkroussos 0:e8fdba0ed044 27 * // Count the time to toggle a LED
gkroussos 0:e8fdba0ed044 28 *
gkroussos 0:e8fdba0ed044 29 * #include "mbed.h"
gkroussos 0:e8fdba0ed044 30 *
gkroussos 0:e8fdba0ed044 31 * Timer timer;
gkroussos 0:e8fdba0ed044 32 * DigitalOut led(LED1);
gkroussos 0:e8fdba0ed044 33 * int begin, end;
gkroussos 0:e8fdba0ed044 34 *
gkroussos 0:e8fdba0ed044 35 * int main() {
gkroussos 0:e8fdba0ed044 36 * timer.start();
gkroussos 0:e8fdba0ed044 37 * begin = timer.read_us();
gkroussos 0:e8fdba0ed044 38 * led = !led;
gkroussos 0:e8fdba0ed044 39 * end = timer.read_us();
gkroussos 0:e8fdba0ed044 40 * printf("Toggle the led takes %d us", end - begin);
gkroussos 0:e8fdba0ed044 41 * }
gkroussos 0:e8fdba0ed044 42 * @endcode
gkroussos 0:e8fdba0ed044 43 */
gkroussos 0:e8fdba0ed044 44 class Timer {
gkroussos 0:e8fdba0ed044 45
gkroussos 0:e8fdba0ed044 46 public:
gkroussos 0:e8fdba0ed044 47 Timer();
gkroussos 0:e8fdba0ed044 48
gkroussos 0:e8fdba0ed044 49 /** Start the timer
gkroussos 0:e8fdba0ed044 50 */
gkroussos 0:e8fdba0ed044 51 void start();
gkroussos 0:e8fdba0ed044 52
gkroussos 0:e8fdba0ed044 53 /** Stop the timer
gkroussos 0:e8fdba0ed044 54 */
gkroussos 0:e8fdba0ed044 55 void stop();
gkroussos 0:e8fdba0ed044 56
gkroussos 0:e8fdba0ed044 57 /** Reset the timer to 0.
gkroussos 0:e8fdba0ed044 58 *
gkroussos 0:e8fdba0ed044 59 * If it was already counting, it will continue
gkroussos 0:e8fdba0ed044 60 */
gkroussos 0:e8fdba0ed044 61 void reset();
gkroussos 0:e8fdba0ed044 62
gkroussos 0:e8fdba0ed044 63 /** Get the time passed in seconds
gkroussos 0:e8fdba0ed044 64 */
gkroussos 0:e8fdba0ed044 65 float read();
gkroussos 0:e8fdba0ed044 66
gkroussos 0:e8fdba0ed044 67 /** Get the time passed in mili-seconds
gkroussos 0:e8fdba0ed044 68 */
gkroussos 0:e8fdba0ed044 69 int read_ms();
gkroussos 0:e8fdba0ed044 70
gkroussos 0:e8fdba0ed044 71 /** Get the time passed in micro-seconds
gkroussos 0:e8fdba0ed044 72 */
gkroussos 0:e8fdba0ed044 73 int read_us();
gkroussos 0:e8fdba0ed044 74
gkroussos 0:e8fdba0ed044 75 #ifdef MBED_OPERATORS
gkroussos 0:e8fdba0ed044 76 operator float();
gkroussos 0:e8fdba0ed044 77 #endif
gkroussos 0:e8fdba0ed044 78
gkroussos 0:e8fdba0ed044 79 protected:
gkroussos 0:e8fdba0ed044 80 int slicetime();
gkroussos 0:e8fdba0ed044 81 int _running; // whether the timer is running
gkroussos 0:e8fdba0ed044 82 unsigned int _start; // the start time of the latest slice
gkroussos 0:e8fdba0ed044 83 int _time; // any accumulated time from previous slices
gkroussos 0:e8fdba0ed044 84 };
gkroussos 0:e8fdba0ed044 85
gkroussos 0:e8fdba0ed044 86 } // namespace mbed
gkroussos 0:e8fdba0ed044 87
gkroussos 0:e8fdba0ed044 88 #endif