George Roussos / BLE_Temperature_Exercise

BLE Temperature Service Mobile and Ubiquitous Computing Module Birkbeck College

Dependencies:   DS1820

mbed/Timer.h@0:dd0fea342ad2, 2015-03-08 (annotated)

Committer:
gkroussos
Date:
Sun Mar 08 19:42:20 2015 +0000
Revision:
0:dd0fea342ad2
BLE Temperature Service ; Mobile and Ubiquitous Computing Module; Birkbeck College

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gkroussos 0:dd0fea342ad2 1 /* mbed Microcontroller Library
gkroussos 0:dd0fea342ad2 2 * Copyright (c) 2006-2013 ARM Limited
gkroussos 0:dd0fea342ad2 3 *
gkroussos 0:dd0fea342ad2 4 * Licensed under the Apache License, Version 2.0 (the "License");
gkroussos 0:dd0fea342ad2 5 * you may not use this file except in compliance with the License.
gkroussos 0:dd0fea342ad2 6 * You may obtain a copy of the License at
gkroussos 0:dd0fea342ad2 7 *
gkroussos 0:dd0fea342ad2 8 * http://www.apache.org/licenses/LICENSE-2.0
gkroussos 0:dd0fea342ad2 9 *
gkroussos 0:dd0fea342ad2 10 * Unless required by applicable law or agreed to in writing, software
gkroussos 0:dd0fea342ad2 11 * distributed under the License is distributed on an "AS IS" BASIS,
gkroussos 0:dd0fea342ad2 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
gkroussos 0:dd0fea342ad2 13 * See the License for the specific language governing permissions and
gkroussos 0:dd0fea342ad2 14 * limitations under the License.
gkroussos 0:dd0fea342ad2 15 */
gkroussos 0:dd0fea342ad2 16 #ifndef MBED_TIMER_H
gkroussos 0:dd0fea342ad2 17 #define MBED_TIMER_H
gkroussos 0:dd0fea342ad2 18
gkroussos 0:dd0fea342ad2 19 #include "platform.h"
gkroussos 0:dd0fea342ad2 20
gkroussos 0:dd0fea342ad2 21 namespace mbed {
gkroussos 0:dd0fea342ad2 22
gkroussos 0:dd0fea342ad2 23 /** A general purpose timer
gkroussos 0:dd0fea342ad2 24 *
gkroussos 0:dd0fea342ad2 25 * Example:
gkroussos 0:dd0fea342ad2 26 * @code
gkroussos 0:dd0fea342ad2 27 * // Count the time to toggle a LED
gkroussos 0:dd0fea342ad2 28 *
gkroussos 0:dd0fea342ad2 29 * #include "mbed.h"
gkroussos 0:dd0fea342ad2 30 *
gkroussos 0:dd0fea342ad2 31 * Timer timer;
gkroussos 0:dd0fea342ad2 32 * DigitalOut led(LED1);
gkroussos 0:dd0fea342ad2 33 * int begin, end;
gkroussos 0:dd0fea342ad2 34 *
gkroussos 0:dd0fea342ad2 35 * int main() {
gkroussos 0:dd0fea342ad2 36 * timer.start();
gkroussos 0:dd0fea342ad2 37 * begin = timer.read_us();
gkroussos 0:dd0fea342ad2 38 * led = !led;
gkroussos 0:dd0fea342ad2 39 * end = timer.read_us();
gkroussos 0:dd0fea342ad2 40 * printf("Toggle the led takes %d us", end - begin);
gkroussos 0:dd0fea342ad2 41 * }
gkroussos 0:dd0fea342ad2 42 * @endcode
gkroussos 0:dd0fea342ad2 43 */
gkroussos 0:dd0fea342ad2 44 class Timer {
gkroussos 0:dd0fea342ad2 45
gkroussos 0:dd0fea342ad2 46 public:
gkroussos 0:dd0fea342ad2 47 Timer();
gkroussos 0:dd0fea342ad2 48
gkroussos 0:dd0fea342ad2 49 /** Start the timer
gkroussos 0:dd0fea342ad2 50 */
gkroussos 0:dd0fea342ad2 51 void start();
gkroussos 0:dd0fea342ad2 52
gkroussos 0:dd0fea342ad2 53 /** Stop the timer
gkroussos 0:dd0fea342ad2 54 */
gkroussos 0:dd0fea342ad2 55 void stop();
gkroussos 0:dd0fea342ad2 56
gkroussos 0:dd0fea342ad2 57 /** Reset the timer to 0.
gkroussos 0:dd0fea342ad2 58 *
gkroussos 0:dd0fea342ad2 59 * If it was already counting, it will continue
gkroussos 0:dd0fea342ad2 60 */
gkroussos 0:dd0fea342ad2 61 void reset();
gkroussos 0:dd0fea342ad2 62
gkroussos 0:dd0fea342ad2 63 /** Get the time passed in seconds
gkroussos 0:dd0fea342ad2 64 */
gkroussos 0:dd0fea342ad2 65 float read();
gkroussos 0:dd0fea342ad2 66
gkroussos 0:dd0fea342ad2 67 /** Get the time passed in mili-seconds
gkroussos 0:dd0fea342ad2 68 */
gkroussos 0:dd0fea342ad2 69 int read_ms();
gkroussos 0:dd0fea342ad2 70
gkroussos 0:dd0fea342ad2 71 /** Get the time passed in micro-seconds
gkroussos 0:dd0fea342ad2 72 */
gkroussos 0:dd0fea342ad2 73 int read_us();
gkroussos 0:dd0fea342ad2 74
gkroussos 0:dd0fea342ad2 75 #ifdef MBED_OPERATORS
gkroussos 0:dd0fea342ad2 76 operator float();
gkroussos 0:dd0fea342ad2 77 #endif
gkroussos 0:dd0fea342ad2 78
gkroussos 0:dd0fea342ad2 79 protected:
gkroussos 0:dd0fea342ad2 80 int slicetime();
gkroussos 0:dd0fea342ad2 81 int _running; // whether the timer is running
gkroussos 0:dd0fea342ad2 82 unsigned int _start; // the start time of the latest slice
gkroussos 0:dd0fea342ad2 83 int _time; // any accumulated time from previous slices
gkroussos 0:dd0fea342ad2 84 };
gkroussos 0:dd0fea342ad2 85
gkroussos 0:dd0fea342ad2 86 } // namespace mbed
gkroussos 0:dd0fea342ad2 87
gkroussos 0:dd0fea342ad2 88 #endif