不韋 呂 / F746_AcousticEffector_MIC

Audio singal input and output example for DISCO-F746. Input: MEMS mic, Output: CN10 OUT, Acoustic effect: echo and frequency shift. DISCO-F746 によるオーディオ信号入出力．入力：MEMS マイク，出力：CN10 OUT，音響効果：エコー，周波数変換．

Dependencies:   F746_GUI F746_SAI_IO

mbed_src_STM32F7/common/Timer.cpp@10:56f2f01df983, 2017-04-10 (annotated)

Committer:
MikamiUitOpen
Date:
Mon Apr 10 13:44:13 2017 +0000
Revision:
10:56f2f01df983
Parent:
6:38f7dce055d0 
11

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 6:38f7dce055d0 1 /* mbed Microcontroller Library
MikamiUitOpen 6:38f7dce055d0 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 6:38f7dce055d0 3 *
MikamiUitOpen 6:38f7dce055d0 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 6:38f7dce055d0 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 6:38f7dce055d0 6 * You may obtain a copy of the License at
MikamiUitOpen 6:38f7dce055d0 7 *
MikamiUitOpen 6:38f7dce055d0 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 6:38f7dce055d0 9 *
MikamiUitOpen 6:38f7dce055d0 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 6:38f7dce055d0 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 6:38f7dce055d0 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 6:38f7dce055d0 13 * See the License for the specific language governing permissions and
MikamiUitOpen 6:38f7dce055d0 14 * limitations under the License.
MikamiUitOpen 6:38f7dce055d0 15 */
MikamiUitOpen 6:38f7dce055d0 16 #include "Timer.h"
MikamiUitOpen 6:38f7dce055d0 17 #include "ticker_api.h"
MikamiUitOpen 6:38f7dce055d0 18 #include "us_ticker_api.h"
MikamiUitOpen 6:38f7dce055d0 19
MikamiUitOpen 6:38f7dce055d0 20 namespace mbed {
MikamiUitOpen 6:38f7dce055d0 21
MikamiUitOpen 6:38f7dce055d0 22 Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()) {
MikamiUitOpen 6:38f7dce055d0 23 reset();
MikamiUitOpen 6:38f7dce055d0 24 }
MikamiUitOpen 6:38f7dce055d0 25
MikamiUitOpen 6:38f7dce055d0 26 Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data) {
MikamiUitOpen 6:38f7dce055d0 27 reset();
MikamiUitOpen 6:38f7dce055d0 28 }
MikamiUitOpen 6:38f7dce055d0 29
MikamiUitOpen 6:38f7dce055d0 30 void Timer::start() {
MikamiUitOpen 6:38f7dce055d0 31 if (!_running) {
MikamiUitOpen 6:38f7dce055d0 32 _start = ticker_read(_ticker_data);
MikamiUitOpen 6:38f7dce055d0 33 _running = 1;
MikamiUitOpen 6:38f7dce055d0 34 }
MikamiUitOpen 6:38f7dce055d0 35 }
MikamiUitOpen 6:38f7dce055d0 36
MikamiUitOpen 6:38f7dce055d0 37 void Timer::stop() {
MikamiUitOpen 6:38f7dce055d0 38 _time += slicetime();
MikamiUitOpen 6:38f7dce055d0 39 _running = 0;
MikamiUitOpen 6:38f7dce055d0 40 }
MikamiUitOpen 6:38f7dce055d0 41
MikamiUitOpen 6:38f7dce055d0 42 int Timer::read_us() {
MikamiUitOpen 6:38f7dce055d0 43 return _time + slicetime();
MikamiUitOpen 6:38f7dce055d0 44 }
MikamiUitOpen 6:38f7dce055d0 45
MikamiUitOpen 6:38f7dce055d0 46 float Timer::read() {
MikamiUitOpen 6:38f7dce055d0 47 return (float)read_us() / 1000000.0f;
MikamiUitOpen 6:38f7dce055d0 48 }
MikamiUitOpen 6:38f7dce055d0 49
MikamiUitOpen 6:38f7dce055d0 50 int Timer::read_ms() {
MikamiUitOpen 6:38f7dce055d0 51 return read_us() / 1000;
MikamiUitOpen 6:38f7dce055d0 52 }
MikamiUitOpen 6:38f7dce055d0 53
MikamiUitOpen 6:38f7dce055d0 54 int Timer::slicetime() {
MikamiUitOpen 6:38f7dce055d0 55 if (_running) {
MikamiUitOpen 6:38f7dce055d0 56 return ticker_read(_ticker_data) - _start;
MikamiUitOpen 6:38f7dce055d0 57 } else {
MikamiUitOpen 6:38f7dce055d0 58 return 0;
MikamiUitOpen 6:38f7dce055d0 59 }
MikamiUitOpen 6:38f7dce055d0 60 }
MikamiUitOpen 6:38f7dce055d0 61
MikamiUitOpen 6:38f7dce055d0 62 void Timer::reset() {
MikamiUitOpen 6:38f7dce055d0 63 _start = ticker_read(_ticker_data);
MikamiUitOpen 6:38f7dce055d0 64 _time = 0;
MikamiUitOpen 6:38f7dce055d0 65 }
MikamiUitOpen 6:38f7dce055d0 66
MikamiUitOpen 6:38f7dce055d0 67 #ifdef MBED_OPERATORS
MikamiUitOpen 6:38f7dce055d0 68 Timer::operator float() {
MikamiUitOpen 6:38f7dce055d0 69 return read();
MikamiUitOpen 6:38f7dce055d0 70 }
MikamiUitOpen 6:38f7dce055d0 71 #endif
MikamiUitOpen 6:38f7dce055d0 72
MikamiUitOpen 6:38f7dce055d0 73 } // namespace mbed