DSP Book Yeditepe / mbed_f401re

mbed library sources with internal temperature sensor for nucleo f401

api/Timer.h@0:7e2bd16f80af, 2015-01-17 (annotated)

Committer:
elessair
Date:
Sat Jan 17 18:03:58 2015 +0000
Revision:
0:7e2bd16f80af
nucleo f401re internal temperature added

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elessair 0:7e2bd16f80af 1 /* mbed Microcontroller Library
elessair 0:7e2bd16f80af 2 * Copyright (c) 2006-2013 ARM Limited
elessair 0:7e2bd16f80af 3 *
elessair 0:7e2bd16f80af 4 * Licensed under the Apache License, Version 2.0 (the "License");
elessair 0:7e2bd16f80af 5 * you may not use this file except in compliance with the License.
elessair 0:7e2bd16f80af 6 * You may obtain a copy of the License at
elessair 0:7e2bd16f80af 7 *
elessair 0:7e2bd16f80af 8 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:7e2bd16f80af 9 *
elessair 0:7e2bd16f80af 10 * Unless required by applicable law or agreed to in writing, software
elessair 0:7e2bd16f80af 11 * distributed under the License is distributed on an "AS IS" BASIS,
elessair 0:7e2bd16f80af 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:7e2bd16f80af 13 * See the License for the specific language governing permissions and
elessair 0:7e2bd16f80af 14 * limitations under the License.
elessair 0:7e2bd16f80af 15 */
elessair 0:7e2bd16f80af 16 #ifndef MBED_TIMER_H
elessair 0:7e2bd16f80af 17 #define MBED_TIMER_H
elessair 0:7e2bd16f80af 18
elessair 0:7e2bd16f80af 19 #include "platform.h"
elessair 0:7e2bd16f80af 20
elessair 0:7e2bd16f80af 21 namespace mbed {
elessair 0:7e2bd16f80af 22
elessair 0:7e2bd16f80af 23 /** A general purpose timer
elessair 0:7e2bd16f80af 24 *
elessair 0:7e2bd16f80af 25 * Example:
elessair 0:7e2bd16f80af 26 * @code
elessair 0:7e2bd16f80af 27 * // Count the time to toggle a LED
elessair 0:7e2bd16f80af 28 *
elessair 0:7e2bd16f80af 29 * #include "mbed.h"
elessair 0:7e2bd16f80af 30 *
elessair 0:7e2bd16f80af 31 * Timer timer;
elessair 0:7e2bd16f80af 32 * DigitalOut led(LED1);
elessair 0:7e2bd16f80af 33 * int begin, end;
elessair 0:7e2bd16f80af 34 *
elessair 0:7e2bd16f80af 35 * int main() {
elessair 0:7e2bd16f80af 36 * timer.start();
elessair 0:7e2bd16f80af 37 * begin = timer.read_us();
elessair 0:7e2bd16f80af 38 * led = !led;
elessair 0:7e2bd16f80af 39 * end = timer.read_us();
elessair 0:7e2bd16f80af 40 * printf("Toggle the led takes %d us", end - begin);
elessair 0:7e2bd16f80af 41 * }
elessair 0:7e2bd16f80af 42 * @endcode
elessair 0:7e2bd16f80af 43 */
elessair 0:7e2bd16f80af 44 class Timer {
elessair 0:7e2bd16f80af 45
elessair 0:7e2bd16f80af 46 public:
elessair 0:7e2bd16f80af 47 Timer();
elessair 0:7e2bd16f80af 48
elessair 0:7e2bd16f80af 49 /** Start the timer
elessair 0:7e2bd16f80af 50 */
elessair 0:7e2bd16f80af 51 void start();
elessair 0:7e2bd16f80af 52
elessair 0:7e2bd16f80af 53 /** Stop the timer
elessair 0:7e2bd16f80af 54 */
elessair 0:7e2bd16f80af 55 void stop();
elessair 0:7e2bd16f80af 56
elessair 0:7e2bd16f80af 57 /** Reset the timer to 0.
elessair 0:7e2bd16f80af 58 *
elessair 0:7e2bd16f80af 59 * If it was already counting, it will continue
elessair 0:7e2bd16f80af 60 */
elessair 0:7e2bd16f80af 61 void reset();
elessair 0:7e2bd16f80af 62
elessair 0:7e2bd16f80af 63 /** Get the time passed in seconds
elessair 0:7e2bd16f80af 64 */
elessair 0:7e2bd16f80af 65 float read();
elessair 0:7e2bd16f80af 66
elessair 0:7e2bd16f80af 67 /** Get the time passed in mili-seconds
elessair 0:7e2bd16f80af 68 */
elessair 0:7e2bd16f80af 69 int read_ms();
elessair 0:7e2bd16f80af 70
elessair 0:7e2bd16f80af 71 /** Get the time passed in micro-seconds
elessair 0:7e2bd16f80af 72 */
elessair 0:7e2bd16f80af 73 int read_us();
elessair 0:7e2bd16f80af 74
elessair 0:7e2bd16f80af 75 #ifdef MBED_OPERATORS
elessair 0:7e2bd16f80af 76 operator float();
elessair 0:7e2bd16f80af 77 #endif
elessair 0:7e2bd16f80af 78
elessair 0:7e2bd16f80af 79 protected:
elessair 0:7e2bd16f80af 80 int slicetime();
elessair 0:7e2bd16f80af 81 int _running; // whether the timer is running
elessair 0:7e2bd16f80af 82 unsigned int _start; // the start time of the latest slice
elessair 0:7e2bd16f80af 83 int _time; // any accumulated time from previous slices
elessair 0:7e2bd16f80af 84 };
elessair 0:7e2bd16f80af 85
elessair 0:7e2bd16f80af 86 } // namespace mbed
elessair 0:7e2bd16f80af 87
elessair 0:7e2bd16f80af 88 #endif