Jasper Lee / mbed_helloworld

change some io settings for TWR-K22F-120M

Dependents:   twr_helloworld

Timer.h@0:b16d94660a33, 2014-12-23 (annotated)

Committer:
Jasper_lee
Date:
Tue Dec 23 03:35:08 2014 +0000
Revision:
0:b16d94660a33
change some io setting used in TWR-K22F120M

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Jasper_lee 0:b16d94660a33 1 /* mbed Microcontroller Library
Jasper_lee 0:b16d94660a33 2 * Copyright (c) 2006-2013 ARM Limited
Jasper_lee 0:b16d94660a33 3 *
Jasper_lee 0:b16d94660a33 4 * Licensed under the Apache License, Version 2.0 (the "License");
Jasper_lee 0:b16d94660a33 5 * you may not use this file except in compliance with the License.
Jasper_lee 0:b16d94660a33 6 * You may obtain a copy of the License at
Jasper_lee 0:b16d94660a33 7 *
Jasper_lee 0:b16d94660a33 8 * http://www.apache.org/licenses/LICENSE-2.0
Jasper_lee 0:b16d94660a33 9 *
Jasper_lee 0:b16d94660a33 10 * Unless required by applicable law or agreed to in writing, software
Jasper_lee 0:b16d94660a33 11 * distributed under the License is distributed on an "AS IS" BASIS,
Jasper_lee 0:b16d94660a33 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Jasper_lee 0:b16d94660a33 13 * See the License for the specific language governing permissions and
Jasper_lee 0:b16d94660a33 14 * limitations under the License.
Jasper_lee 0:b16d94660a33 15 */
Jasper_lee 0:b16d94660a33 16 #ifndef MBED_TIMER_H
Jasper_lee 0:b16d94660a33 17 #define MBED_TIMER_H
Jasper_lee 0:b16d94660a33 18
Jasper_lee 0:b16d94660a33 19 #include "platform.h"
Jasper_lee 0:b16d94660a33 20
Jasper_lee 0:b16d94660a33 21 namespace mbed {
Jasper_lee 0:b16d94660a33 22
Jasper_lee 0:b16d94660a33 23 /** A general purpose timer
Jasper_lee 0:b16d94660a33 24 *
Jasper_lee 0:b16d94660a33 25 * Example:
Jasper_lee 0:b16d94660a33 26 * @code
Jasper_lee 0:b16d94660a33 27 * // Count the time to toggle a LED
Jasper_lee 0:b16d94660a33 28 *
Jasper_lee 0:b16d94660a33 29 * #include "mbed.h"
Jasper_lee 0:b16d94660a33 30 *
Jasper_lee 0:b16d94660a33 31 * Timer timer;
Jasper_lee 0:b16d94660a33 32 * DigitalOut led(LED1);
Jasper_lee 0:b16d94660a33 33 * int begin, end;
Jasper_lee 0:b16d94660a33 34 *
Jasper_lee 0:b16d94660a33 35 * int main() {
Jasper_lee 0:b16d94660a33 36 * timer.start();
Jasper_lee 0:b16d94660a33 37 * begin = timer.read_us();
Jasper_lee 0:b16d94660a33 38 * led = !led;
Jasper_lee 0:b16d94660a33 39 * end = timer.read_us();
Jasper_lee 0:b16d94660a33 40 * printf("Toggle the led takes %d us", end - begin);
Jasper_lee 0:b16d94660a33 41 * }
Jasper_lee 0:b16d94660a33 42 * @endcode
Jasper_lee 0:b16d94660a33 43 */
Jasper_lee 0:b16d94660a33 44 class Timer {
Jasper_lee 0:b16d94660a33 45
Jasper_lee 0:b16d94660a33 46 public:
Jasper_lee 0:b16d94660a33 47 Timer();
Jasper_lee 0:b16d94660a33 48
Jasper_lee 0:b16d94660a33 49 /** Start the timer
Jasper_lee 0:b16d94660a33 50 */
Jasper_lee 0:b16d94660a33 51 void start();
Jasper_lee 0:b16d94660a33 52
Jasper_lee 0:b16d94660a33 53 /** Stop the timer
Jasper_lee 0:b16d94660a33 54 */
Jasper_lee 0:b16d94660a33 55 void stop();
Jasper_lee 0:b16d94660a33 56
Jasper_lee 0:b16d94660a33 57 /** Reset the timer to 0.
Jasper_lee 0:b16d94660a33 58 *
Jasper_lee 0:b16d94660a33 59 * If it was already counting, it will continue
Jasper_lee 0:b16d94660a33 60 */
Jasper_lee 0:b16d94660a33 61 void reset();
Jasper_lee 0:b16d94660a33 62
Jasper_lee 0:b16d94660a33 63 /** Get the time passed in seconds
Jasper_lee 0:b16d94660a33 64 */
Jasper_lee 0:b16d94660a33 65 float read();
Jasper_lee 0:b16d94660a33 66
Jasper_lee 0:b16d94660a33 67 /** Get the time passed in mili-seconds
Jasper_lee 0:b16d94660a33 68 */
Jasper_lee 0:b16d94660a33 69 int read_ms();
Jasper_lee 0:b16d94660a33 70
Jasper_lee 0:b16d94660a33 71 /** Get the time passed in micro-seconds
Jasper_lee 0:b16d94660a33 72 */
Jasper_lee 0:b16d94660a33 73 int read_us();
Jasper_lee 0:b16d94660a33 74
Jasper_lee 0:b16d94660a33 75 #ifdef MBED_OPERATORS
Jasper_lee 0:b16d94660a33 76 operator float();
Jasper_lee 0:b16d94660a33 77 #endif
Jasper_lee 0:b16d94660a33 78
Jasper_lee 0:b16d94660a33 79 protected:
Jasper_lee 0:b16d94660a33 80 int slicetime();
Jasper_lee 0:b16d94660a33 81 int _running; // whether the timer is running
Jasper_lee 0:b16d94660a33 82 unsigned int _start; // the start time of the latest slice
Jasper_lee 0:b16d94660a33 83 int _time; // any accumulated time from previous slices
Jasper_lee 0:b16d94660a33 84 };
Jasper_lee 0:b16d94660a33 85
Jasper_lee 0:b16d94660a33 86 } // namespace mbed
Jasper_lee 0:b16d94660a33 87
Jasper_lee 0:b16d94660a33 88 #endif