Tamura Mizuki / STM32F746_FFT

fft

Dependencies:   BSP_DISCO_F746NG SDFileSystem_Warning_Fixed

mbed_src_STM32F7/common/Timer.cpp@3:6f7e05dd8d15, 2020-03-06 (annotated)

Committer:
aria19970520
Date:
Fri Mar 06 06:52:14 2020 +0000
Revision:
3:6f7e05dd8d15
Parent:
0:3e46577dc273 
fft

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:3e46577dc273 1 /* mbed Microcontroller Library
MikamiUitOpen 0:3e46577dc273 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 0:3e46577dc273 3 *
MikamiUitOpen 0:3e46577dc273 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 0:3e46577dc273 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 0:3e46577dc273 6 * You may obtain a copy of the License at
MikamiUitOpen 0:3e46577dc273 7 *
MikamiUitOpen 0:3e46577dc273 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 0:3e46577dc273 9 *
MikamiUitOpen 0:3e46577dc273 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 0:3e46577dc273 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 0:3e46577dc273 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 0:3e46577dc273 13 * See the License for the specific language governing permissions and
MikamiUitOpen 0:3e46577dc273 14 * limitations under the License.
MikamiUitOpen 0:3e46577dc273 15 */
MikamiUitOpen 0:3e46577dc273 16 #include "Timer.h"
MikamiUitOpen 0:3e46577dc273 17 #include "ticker_api.h"
MikamiUitOpen 0:3e46577dc273 18 #include "us_ticker_api.h"
MikamiUitOpen 0:3e46577dc273 19
MikamiUitOpen 0:3e46577dc273 20 namespace mbed {
MikamiUitOpen 0:3e46577dc273 21
MikamiUitOpen 0:3e46577dc273 22 Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()) {
MikamiUitOpen 0:3e46577dc273 23 reset();
MikamiUitOpen 0:3e46577dc273 24 }
MikamiUitOpen 0:3e46577dc273 25
MikamiUitOpen 0:3e46577dc273 26 Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data) {
MikamiUitOpen 0:3e46577dc273 27 reset();
MikamiUitOpen 0:3e46577dc273 28 }
MikamiUitOpen 0:3e46577dc273 29
MikamiUitOpen 0:3e46577dc273 30 void Timer::start() {
MikamiUitOpen 0:3e46577dc273 31 if (!_running) {
MikamiUitOpen 0:3e46577dc273 32 _start = ticker_read(_ticker_data);
MikamiUitOpen 0:3e46577dc273 33 _running = 1;
MikamiUitOpen 0:3e46577dc273 34 }
MikamiUitOpen 0:3e46577dc273 35 }
MikamiUitOpen 0:3e46577dc273 36
MikamiUitOpen 0:3e46577dc273 37 void Timer::stop() {
MikamiUitOpen 0:3e46577dc273 38 _time += slicetime();
MikamiUitOpen 0:3e46577dc273 39 _running = 0;
MikamiUitOpen 0:3e46577dc273 40 }
MikamiUitOpen 0:3e46577dc273 41
MikamiUitOpen 0:3e46577dc273 42 int Timer::read_us() {
MikamiUitOpen 0:3e46577dc273 43 return _time + slicetime();
MikamiUitOpen 0:3e46577dc273 44 }
MikamiUitOpen 0:3e46577dc273 45
MikamiUitOpen 0:3e46577dc273 46 float Timer::read() {
MikamiUitOpen 0:3e46577dc273 47 return (float)read_us() / 1000000.0f;
MikamiUitOpen 0:3e46577dc273 48 }
MikamiUitOpen 0:3e46577dc273 49
MikamiUitOpen 0:3e46577dc273 50 int Timer::read_ms() {
MikamiUitOpen 0:3e46577dc273 51 return read_us() / 1000;
MikamiUitOpen 0:3e46577dc273 52 }
MikamiUitOpen 0:3e46577dc273 53
MikamiUitOpen 0:3e46577dc273 54 int Timer::slicetime() {
MikamiUitOpen 0:3e46577dc273 55 if (_running) {
MikamiUitOpen 0:3e46577dc273 56 return ticker_read(_ticker_data) - _start;
MikamiUitOpen 0:3e46577dc273 57 } else {
MikamiUitOpen 0:3e46577dc273 58 return 0;
MikamiUitOpen 0:3e46577dc273 59 }
MikamiUitOpen 0:3e46577dc273 60 }
MikamiUitOpen 0:3e46577dc273 61
MikamiUitOpen 0:3e46577dc273 62 void Timer::reset() {
MikamiUitOpen 0:3e46577dc273 63 _start = ticker_read(_ticker_data);
MikamiUitOpen 0:3e46577dc273 64 _time = 0;
MikamiUitOpen 0:3e46577dc273 65 }
MikamiUitOpen 0:3e46577dc273 66
MikamiUitOpen 0:3e46577dc273 67 #ifdef MBED_OPERATORS
MikamiUitOpen 0:3e46577dc273 68 Timer::operator float() {
MikamiUitOpen 0:3e46577dc273 69 return read();
MikamiUitOpen 0:3e46577dc273 70 }
MikamiUitOpen 0:3e46577dc273 71 #endif
MikamiUitOpen 0:3e46577dc273 72
MikamiUitOpen 0:3e46577dc273 73 } // namespace mbed