不韋 呂 / F746_SD_Player_Demo

Demo program for library named SD_PlayerSkeleton of SD card player skeleton. SD カードプレーヤのための骨組みとして使うためのライブラリ SD_PlayerSkeleton の使用例．このプログラムについては，CQ出版社インターフェース誌 2018年7月号で解説している．

Dependencies:   F746_GUI F746_SAI_IO SD_PlayerSkeleton

mbed_src_STM32F7/api/Timer.h@19:3c3833ec00d2, 2017-04-09 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Apr 09 12:44:17 2017 +0000
Revision:
19:3c3833ec00d2
Parent:
2:cf42e62a97dc 
20

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 2:cf42e62a97dc 1 /* mbed Microcontroller Library
MikamiUitOpen 2:cf42e62a97dc 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 2:cf42e62a97dc 3 *
MikamiUitOpen 2:cf42e62a97dc 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 2:cf42e62a97dc 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 2:cf42e62a97dc 6 * You may obtain a copy of the License at
MikamiUitOpen 2:cf42e62a97dc 7 *
MikamiUitOpen 2:cf42e62a97dc 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 2:cf42e62a97dc 9 *
MikamiUitOpen 2:cf42e62a97dc 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 2:cf42e62a97dc 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 2:cf42e62a97dc 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 2:cf42e62a97dc 13 * See the License for the specific language governing permissions and
MikamiUitOpen 2:cf42e62a97dc 14 * limitations under the License.
MikamiUitOpen 2:cf42e62a97dc 15 */
MikamiUitOpen 2:cf42e62a97dc 16 #ifndef MBED_TIMER_H
MikamiUitOpen 2:cf42e62a97dc 17 #define MBED_TIMER_H
MikamiUitOpen 2:cf42e62a97dc 18
MikamiUitOpen 2:cf42e62a97dc 19 #include "platform.h"
MikamiUitOpen 2:cf42e62a97dc 20 #include "ticker_api.h"
MikamiUitOpen 2:cf42e62a97dc 21
MikamiUitOpen 2:cf42e62a97dc 22 namespace mbed {
MikamiUitOpen 2:cf42e62a97dc 23
MikamiUitOpen 2:cf42e62a97dc 24 /** A general purpose timer
MikamiUitOpen 2:cf42e62a97dc 25 *
MikamiUitOpen 2:cf42e62a97dc 26 * Example:
MikamiUitOpen 2:cf42e62a97dc 27 * @code
MikamiUitOpen 2:cf42e62a97dc 28 * // Count the time to toggle a LED
MikamiUitOpen 2:cf42e62a97dc 29 *
MikamiUitOpen 2:cf42e62a97dc 30 * #include "mbed.h"
MikamiUitOpen 2:cf42e62a97dc 31 *
MikamiUitOpen 2:cf42e62a97dc 32 * Timer timer;
MikamiUitOpen 2:cf42e62a97dc 33 * DigitalOut led(LED1);
MikamiUitOpen 2:cf42e62a97dc 34 * int begin, end;
MikamiUitOpen 2:cf42e62a97dc 35 *
MikamiUitOpen 2:cf42e62a97dc 36 * int main() {
MikamiUitOpen 2:cf42e62a97dc 37 * timer.start();
MikamiUitOpen 2:cf42e62a97dc 38 * begin = timer.read_us();
MikamiUitOpen 2:cf42e62a97dc 39 * led = !led;
MikamiUitOpen 2:cf42e62a97dc 40 * end = timer.read_us();
MikamiUitOpen 2:cf42e62a97dc 41 * printf("Toggle the led takes %d us", end - begin);
MikamiUitOpen 2:cf42e62a97dc 42 * }
MikamiUitOpen 2:cf42e62a97dc 43 * @endcode
MikamiUitOpen 2:cf42e62a97dc 44 */
MikamiUitOpen 2:cf42e62a97dc 45 class Timer {
MikamiUitOpen 2:cf42e62a97dc 46
MikamiUitOpen 2:cf42e62a97dc 47 public:
MikamiUitOpen 2:cf42e62a97dc 48 Timer();
MikamiUitOpen 2:cf42e62a97dc 49 Timer(const ticker_data_t *data);
MikamiUitOpen 2:cf42e62a97dc 50
MikamiUitOpen 2:cf42e62a97dc 51 /** Start the timer
MikamiUitOpen 2:cf42e62a97dc 52 */
MikamiUitOpen 2:cf42e62a97dc 53 void start();
MikamiUitOpen 2:cf42e62a97dc 54
MikamiUitOpen 2:cf42e62a97dc 55 /** Stop the timer
MikamiUitOpen 2:cf42e62a97dc 56 */
MikamiUitOpen 2:cf42e62a97dc 57 void stop();
MikamiUitOpen 2:cf42e62a97dc 58
MikamiUitOpen 2:cf42e62a97dc 59 /** Reset the timer to 0.
MikamiUitOpen 2:cf42e62a97dc 60 *
MikamiUitOpen 2:cf42e62a97dc 61 * If it was already counting, it will continue
MikamiUitOpen 2:cf42e62a97dc 62 */
MikamiUitOpen 2:cf42e62a97dc 63 void reset();
MikamiUitOpen 2:cf42e62a97dc 64
MikamiUitOpen 2:cf42e62a97dc 65 /** Get the time passed in seconds
MikamiUitOpen 2:cf42e62a97dc 66 */
MikamiUitOpen 2:cf42e62a97dc 67 float read();
MikamiUitOpen 2:cf42e62a97dc 68
MikamiUitOpen 2:cf42e62a97dc 69 /** Get the time passed in mili-seconds
MikamiUitOpen 2:cf42e62a97dc 70 */
MikamiUitOpen 2:cf42e62a97dc 71 int read_ms();
MikamiUitOpen 2:cf42e62a97dc 72
MikamiUitOpen 2:cf42e62a97dc 73 /** Get the time passed in micro-seconds
MikamiUitOpen 2:cf42e62a97dc 74 */
MikamiUitOpen 2:cf42e62a97dc 75 int read_us();
MikamiUitOpen 2:cf42e62a97dc 76
MikamiUitOpen 2:cf42e62a97dc 77 #ifdef MBED_OPERATORS
MikamiUitOpen 2:cf42e62a97dc 78 operator float();
MikamiUitOpen 2:cf42e62a97dc 79 #endif
MikamiUitOpen 2:cf42e62a97dc 80
MikamiUitOpen 2:cf42e62a97dc 81 protected:
MikamiUitOpen 2:cf42e62a97dc 82 int slicetime();
MikamiUitOpen 2:cf42e62a97dc 83 int _running; // whether the timer is running
MikamiUitOpen 2:cf42e62a97dc 84 unsigned int _start; // the start time of the latest slice
MikamiUitOpen 2:cf42e62a97dc 85 int _time; // any accumulated time from previous slices
MikamiUitOpen 2:cf42e62a97dc 86 const ticker_data_t *_ticker_data;
MikamiUitOpen 2:cf42e62a97dc 87 };
MikamiUitOpen 2:cf42e62a97dc 88
MikamiUitOpen 2:cf42e62a97dc 89 } // namespace mbed
MikamiUitOpen 2:cf42e62a97dc 90
MikamiUitOpen 2:cf42e62a97dc 91 #endif