Yihui Xiong / mbed-src-nrf51822

customized mbed library sources for nrf51822

Dependents:   Grove_Node Potentiometer BLE_Beacon I2C_Scanner

common/Timer.cpp@0:700cadd8b708, 2014-11-04 (annotated)

Committer:
yihui
Date:
Tue Nov 04 07:38:53 2014 +0000
Revision:
0:700cadd8b708
customized mbed-src library for nrf51822

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 0:700cadd8b708 1 /* mbed Microcontroller Library
yihui 0:700cadd8b708 2 * Copyright (c) 2006-2013 ARM Limited
yihui 0:700cadd8b708 3 *
yihui 0:700cadd8b708 4 * Licensed under the Apache License, Version 2.0 (the "License");
yihui 0:700cadd8b708 5 * you may not use this file except in compliance with the License.
yihui 0:700cadd8b708 6 * You may obtain a copy of the License at
yihui 0:700cadd8b708 7 *
yihui 0:700cadd8b708 8 * http://www.apache.org/licenses/LICENSE-2.0
yihui 0:700cadd8b708 9 *
yihui 0:700cadd8b708 10 * Unless required by applicable law or agreed to in writing, software
yihui 0:700cadd8b708 11 * distributed under the License is distributed on an "AS IS" BASIS,
yihui 0:700cadd8b708 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
yihui 0:700cadd8b708 13 * See the License for the specific language governing permissions and
yihui 0:700cadd8b708 14 * limitations under the License.
yihui 0:700cadd8b708 15 */
yihui 0:700cadd8b708 16 #include "Timer.h"
yihui 0:700cadd8b708 17 #include "us_ticker_api.h"
yihui 0:700cadd8b708 18
yihui 0:700cadd8b708 19 namespace mbed {
yihui 0:700cadd8b708 20
yihui 0:700cadd8b708 21 Timer::Timer() : _running(), _start(), _time() {
yihui 0:700cadd8b708 22 reset();
yihui 0:700cadd8b708 23 }
yihui 0:700cadd8b708 24
yihui 0:700cadd8b708 25 void Timer::start() {
yihui 0:700cadd8b708 26 if (!_running) {
yihui 0:700cadd8b708 27 _start = us_ticker_read();
yihui 0:700cadd8b708 28 _running = 1;
yihui 0:700cadd8b708 29 }
yihui 0:700cadd8b708 30 }
yihui 0:700cadd8b708 31
yihui 0:700cadd8b708 32 void Timer::stop() {
yihui 0:700cadd8b708 33 _time += slicetime();
yihui 0:700cadd8b708 34 _running = 0;
yihui 0:700cadd8b708 35 }
yihui 0:700cadd8b708 36
yihui 0:700cadd8b708 37 int Timer::read_us() {
yihui 0:700cadd8b708 38 return _time + slicetime();
yihui 0:700cadd8b708 39 }
yihui 0:700cadd8b708 40
yihui 0:700cadd8b708 41 float Timer::read() {
yihui 0:700cadd8b708 42 return (float)read_us() / 1000000.0f;
yihui 0:700cadd8b708 43 }
yihui 0:700cadd8b708 44
yihui 0:700cadd8b708 45 int Timer::read_ms() {
yihui 0:700cadd8b708 46 return read_us() / 1000;
yihui 0:700cadd8b708 47 }
yihui 0:700cadd8b708 48
yihui 0:700cadd8b708 49 int Timer::slicetime() {
yihui 0:700cadd8b708 50 if (_running) {
yihui 0:700cadd8b708 51 return us_ticker_read() - _start;
yihui 0:700cadd8b708 52 } else {
yihui 0:700cadd8b708 53 return 0;
yihui 0:700cadd8b708 54 }
yihui 0:700cadd8b708 55 }
yihui 0:700cadd8b708 56
yihui 0:700cadd8b708 57 void Timer::reset() {
yihui 0:700cadd8b708 58 _start = us_ticker_read();
yihui 0:700cadd8b708 59 _time = 0;
yihui 0:700cadd8b708 60 }
yihui 0:700cadd8b708 61
yihui 0:700cadd8b708 62 #ifdef MBED_OPERATORS
yihui 0:700cadd8b708 63 Timer::operator float() {
yihui 0:700cadd8b708 64 return read();
yihui 0:700cadd8b708 65 }
yihui 0:700cadd8b708 66 #endif
yihui 0:700cadd8b708 67
yihui 0:700cadd8b708 68 } // namespace mbed