Yihui Xiong / Mbed 2 deprecated Seeed_nRF51822_Motion

initial

Dependencies:   mbed

mbed-src/common/Timer.cpp@0:638edba3adf6, 2016-01-11 (annotated)

Committer:
yihui
Date:
Mon Jan 11 02:32:24 2016 +0000
Revision:
0:638edba3adf6
initial

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 0:638edba3adf6 1 /* mbed Microcontroller Library
yihui 0:638edba3adf6 2 * Copyright (c) 2006-2013 ARM Limited
yihui 0:638edba3adf6 3 *
yihui 0:638edba3adf6 4 * Licensed under the Apache License, Version 2.0 (the "License");
yihui 0:638edba3adf6 5 * you may not use this file except in compliance with the License.
yihui 0:638edba3adf6 6 * You may obtain a copy of the License at
yihui 0:638edba3adf6 7 *
yihui 0:638edba3adf6 8 * http://www.apache.org/licenses/LICENSE-2.0
yihui 0:638edba3adf6 9 *
yihui 0:638edba3adf6 10 * Unless required by applicable law or agreed to in writing, software
yihui 0:638edba3adf6 11 * distributed under the License is distributed on an "AS IS" BASIS,
yihui 0:638edba3adf6 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
yihui 0:638edba3adf6 13 * See the License for the specific language governing permissions and
yihui 0:638edba3adf6 14 * limitations under the License.
yihui 0:638edba3adf6 15 */
yihui 0:638edba3adf6 16 #include "Timer.h"
yihui 0:638edba3adf6 17 #include "ticker_api.h"
yihui 0:638edba3adf6 18 #include "us_ticker_api.h"
yihui 0:638edba3adf6 19
yihui 0:638edba3adf6 20 namespace mbed {
yihui 0:638edba3adf6 21
yihui 0:638edba3adf6 22 Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()) {
yihui 0:638edba3adf6 23 reset();
yihui 0:638edba3adf6 24 }
yihui 0:638edba3adf6 25
yihui 0:638edba3adf6 26 Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data) {
yihui 0:638edba3adf6 27 reset();
yihui 0:638edba3adf6 28 }
yihui 0:638edba3adf6 29
yihui 0:638edba3adf6 30 void Timer::start() {
yihui 0:638edba3adf6 31 if (!_running) {
yihui 0:638edba3adf6 32 _start = ticker_read(_ticker_data);
yihui 0:638edba3adf6 33 _running = 1;
yihui 0:638edba3adf6 34 }
yihui 0:638edba3adf6 35 }
yihui 0:638edba3adf6 36
yihui 0:638edba3adf6 37 void Timer::stop() {
yihui 0:638edba3adf6 38 _time += slicetime();
yihui 0:638edba3adf6 39 _running = 0;
yihui 0:638edba3adf6 40 }
yihui 0:638edba3adf6 41
yihui 0:638edba3adf6 42 int Timer::read_us() {
yihui 0:638edba3adf6 43 return _time + slicetime();
yihui 0:638edba3adf6 44 }
yihui 0:638edba3adf6 45
yihui 0:638edba3adf6 46 float Timer::read() {
yihui 0:638edba3adf6 47 return (float)read_us() / 1000000.0f;
yihui 0:638edba3adf6 48 }
yihui 0:638edba3adf6 49
yihui 0:638edba3adf6 50 int Timer::read_ms() {
yihui 0:638edba3adf6 51 return read_us() / 1000;
yihui 0:638edba3adf6 52 }
yihui 0:638edba3adf6 53
yihui 0:638edba3adf6 54 int Timer::slicetime() {
yihui 0:638edba3adf6 55 if (_running) {
yihui 0:638edba3adf6 56 return ticker_read(_ticker_data) - _start;
yihui 0:638edba3adf6 57 } else {
yihui 0:638edba3adf6 58 return 0;
yihui 0:638edba3adf6 59 }
yihui 0:638edba3adf6 60 }
yihui 0:638edba3adf6 61
yihui 0:638edba3adf6 62 void Timer::reset() {
yihui 0:638edba3adf6 63 _start = ticker_read(_ticker_data);
yihui 0:638edba3adf6 64 _time = 0;
yihui 0:638edba3adf6 65 }
yihui 0:638edba3adf6 66
yihui 0:638edba3adf6 67 #ifdef MBED_OPERATORS
yihui 0:638edba3adf6 68 Timer::operator float() {
yihui 0:638edba3adf6 69 return read();
yihui 0:638edba3adf6 70 }
yihui 0:638edba3adf6 71 #endif
yihui 0:638edba3adf6 72
yihui 0:638edba3adf6 73 } // namespace mbed