不韋 呂 / F746_Spectrogram

Realtime spectrogram for DISCO-F746NG. On-board MEMS microphone is used for input sound signal. リアルタイムスペクトログラム．入力：MEMSマイク

Dependencies:   F746_GUI F746_SAI_IO UIT_FFT_Real

mbed_src_STM32F7/common/Timer.cpp@4:c1beacfc42c7, 2016-10-02 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Oct 02 10:51:10 2016 +0000
Revision:
4:c1beacfc42c7
5

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 4:c1beacfc42c7 1 /* mbed Microcontroller Library
MikamiUitOpen 4:c1beacfc42c7 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 4:c1beacfc42c7 3 *
MikamiUitOpen 4:c1beacfc42c7 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 4:c1beacfc42c7 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 4:c1beacfc42c7 6 * You may obtain a copy of the License at
MikamiUitOpen 4:c1beacfc42c7 7 *
MikamiUitOpen 4:c1beacfc42c7 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 4:c1beacfc42c7 9 *
MikamiUitOpen 4:c1beacfc42c7 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 4:c1beacfc42c7 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 4:c1beacfc42c7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 4:c1beacfc42c7 13 * See the License for the specific language governing permissions and
MikamiUitOpen 4:c1beacfc42c7 14 * limitations under the License.
MikamiUitOpen 4:c1beacfc42c7 15 */
MikamiUitOpen 4:c1beacfc42c7 16 #include "Timer.h"
MikamiUitOpen 4:c1beacfc42c7 17 #include "ticker_api.h"
MikamiUitOpen 4:c1beacfc42c7 18 #include "us_ticker_api.h"
MikamiUitOpen 4:c1beacfc42c7 19
MikamiUitOpen 4:c1beacfc42c7 20 namespace mbed {
MikamiUitOpen 4:c1beacfc42c7 21
MikamiUitOpen 4:c1beacfc42c7 22 Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()) {
MikamiUitOpen 4:c1beacfc42c7 23 reset();
MikamiUitOpen 4:c1beacfc42c7 24 }
MikamiUitOpen 4:c1beacfc42c7 25
MikamiUitOpen 4:c1beacfc42c7 26 Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data) {
MikamiUitOpen 4:c1beacfc42c7 27 reset();
MikamiUitOpen 4:c1beacfc42c7 28 }
MikamiUitOpen 4:c1beacfc42c7 29
MikamiUitOpen 4:c1beacfc42c7 30 void Timer::start() {
MikamiUitOpen 4:c1beacfc42c7 31 if (!_running) {
MikamiUitOpen 4:c1beacfc42c7 32 _start = ticker_read(_ticker_data);
MikamiUitOpen 4:c1beacfc42c7 33 _running = 1;
MikamiUitOpen 4:c1beacfc42c7 34 }
MikamiUitOpen 4:c1beacfc42c7 35 }
MikamiUitOpen 4:c1beacfc42c7 36
MikamiUitOpen 4:c1beacfc42c7 37 void Timer::stop() {
MikamiUitOpen 4:c1beacfc42c7 38 _time += slicetime();
MikamiUitOpen 4:c1beacfc42c7 39 _running = 0;
MikamiUitOpen 4:c1beacfc42c7 40 }
MikamiUitOpen 4:c1beacfc42c7 41
MikamiUitOpen 4:c1beacfc42c7 42 int Timer::read_us() {
MikamiUitOpen 4:c1beacfc42c7 43 return _time + slicetime();
MikamiUitOpen 4:c1beacfc42c7 44 }
MikamiUitOpen 4:c1beacfc42c7 45
MikamiUitOpen 4:c1beacfc42c7 46 float Timer::read() {
MikamiUitOpen 4:c1beacfc42c7 47 return (float)read_us() / 1000000.0f;
MikamiUitOpen 4:c1beacfc42c7 48 }
MikamiUitOpen 4:c1beacfc42c7 49
MikamiUitOpen 4:c1beacfc42c7 50 int Timer::read_ms() {
MikamiUitOpen 4:c1beacfc42c7 51 return read_us() / 1000;
MikamiUitOpen 4:c1beacfc42c7 52 }
MikamiUitOpen 4:c1beacfc42c7 53
MikamiUitOpen 4:c1beacfc42c7 54 int Timer::slicetime() {
MikamiUitOpen 4:c1beacfc42c7 55 if (_running) {
MikamiUitOpen 4:c1beacfc42c7 56 return ticker_read(_ticker_data) - _start;
MikamiUitOpen 4:c1beacfc42c7 57 } else {
MikamiUitOpen 4:c1beacfc42c7 58 return 0;
MikamiUitOpen 4:c1beacfc42c7 59 }
MikamiUitOpen 4:c1beacfc42c7 60 }
MikamiUitOpen 4:c1beacfc42c7 61
MikamiUitOpen 4:c1beacfc42c7 62 void Timer::reset() {
MikamiUitOpen 4:c1beacfc42c7 63 _start = ticker_read(_ticker_data);
MikamiUitOpen 4:c1beacfc42c7 64 _time = 0;
MikamiUitOpen 4:c1beacfc42c7 65 }
MikamiUitOpen 4:c1beacfc42c7 66
MikamiUitOpen 4:c1beacfc42c7 67 #ifdef MBED_OPERATORS
MikamiUitOpen 4:c1beacfc42c7 68 Timer::operator float() {
MikamiUitOpen 4:c1beacfc42c7 69 return read();
MikamiUitOpen 4:c1beacfc42c7 70 }
MikamiUitOpen 4:c1beacfc42c7 71 #endif
MikamiUitOpen 4:c1beacfc42c7 72
MikamiUitOpen 4:c1beacfc42c7 73 } // namespace mbed