Steve Kim / mbed-src

mbed library sources(for async_print)

Dependents:   AsyncPrint

Fork of mbed-src by mbed official

common/Timer.cpp@10:3bc89ef62ce7, 2013-06-14 (annotated)

Committer:
emilmont
Date:
Fri Jun 14 17:49:17 2013 +0100
Revision:
10:3bc89ef62ce7
Parent:
9:0ce32e54c9a7
Child:
13:0645d8841f51
Unify mbed library sources

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 10:3bc89ef62ce7 1 /* mbed Microcontroller Library
emilmont 10:3bc89ef62ce7 2 * Copyright (c) 2006-2013 ARM Limited
emilmont 10:3bc89ef62ce7 3 *
emilmont 10:3bc89ef62ce7 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 10:3bc89ef62ce7 5 * you may not use this file except in compliance with the License.
emilmont 10:3bc89ef62ce7 6 * You may obtain a copy of the License at
emilmont 10:3bc89ef62ce7 7 *
emilmont 10:3bc89ef62ce7 8 * http://www.apache.org/licenses/LICENSE-2.0
emilmont 10:3bc89ef62ce7 9 *
emilmont 10:3bc89ef62ce7 10 * Unless required by applicable law or agreed to in writing, software
emilmont 10:3bc89ef62ce7 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 10:3bc89ef62ce7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 10:3bc89ef62ce7 13 * See the License for the specific language governing permissions and
emilmont 10:3bc89ef62ce7 14 * limitations under the License.
emilmont 10:3bc89ef62ce7 15 */
emilmont 10:3bc89ef62ce7 16 #include "Timer.h"
emilmont 10:3bc89ef62ce7 17 #include "us_ticker_api.h"
emilmont 10:3bc89ef62ce7 18
emilmont 10:3bc89ef62ce7 19 namespace mbed {
emilmont 10:3bc89ef62ce7 20
emilmont 10:3bc89ef62ce7 21 Timer::Timer() {
emilmont 10:3bc89ef62ce7 22 reset();
emilmont 10:3bc89ef62ce7 23 }
emilmont 10:3bc89ef62ce7 24
emilmont 10:3bc89ef62ce7 25 void Timer::start() {
emilmont 10:3bc89ef62ce7 26 _start = us_ticker_read();
emilmont 10:3bc89ef62ce7 27 _running = 1;
emilmont 10:3bc89ef62ce7 28 }
emilmont 10:3bc89ef62ce7 29
emilmont 10:3bc89ef62ce7 30 void Timer::stop() {
emilmont 10:3bc89ef62ce7 31 _time += slicetime();
emilmont 10:3bc89ef62ce7 32 _running = 0;
emilmont 10:3bc89ef62ce7 33 }
emilmont 10:3bc89ef62ce7 34
emilmont 10:3bc89ef62ce7 35 int Timer::read_us() {
emilmont 10:3bc89ef62ce7 36 return _time + slicetime();
emilmont 10:3bc89ef62ce7 37 }
emilmont 10:3bc89ef62ce7 38
emilmont 10:3bc89ef62ce7 39 float Timer::read() {
emilmont 10:3bc89ef62ce7 40 return (float)read_us() / 1000000.0f;
emilmont 10:3bc89ef62ce7 41 }
emilmont 10:3bc89ef62ce7 42
emilmont 10:3bc89ef62ce7 43 int Timer::read_ms() {
emilmont 10:3bc89ef62ce7 44 return read_us() / 1000;
emilmont 10:3bc89ef62ce7 45 }
emilmont 10:3bc89ef62ce7 46
emilmont 10:3bc89ef62ce7 47 int Timer::slicetime() {
emilmont 10:3bc89ef62ce7 48 if (_running) {
emilmont 10:3bc89ef62ce7 49 return us_ticker_read() - _start;
emilmont 10:3bc89ef62ce7 50 } else {
emilmont 10:3bc89ef62ce7 51 return 0;
emilmont 10:3bc89ef62ce7 52 }
emilmont 10:3bc89ef62ce7 53 }
emilmont 10:3bc89ef62ce7 54
emilmont 10:3bc89ef62ce7 55 void Timer::reset() {
emilmont 10:3bc89ef62ce7 56 _start = us_ticker_read();
emilmont 10:3bc89ef62ce7 57 _time = 0;
emilmont 10:3bc89ef62ce7 58 }
emilmont 10:3bc89ef62ce7 59
emilmont 10:3bc89ef62ce7 60 #ifdef MBED_OPERATORS
emilmont 10:3bc89ef62ce7 61 Timer::operator float() {
emilmont 10:3bc89ef62ce7 62 return read();
emilmont 10:3bc89ef62ce7 63 }
emilmont 10:3bc89ef62ce7 64 #endif
emilmont 10:3bc89ef62ce7 65
emilmont 10:3bc89ef62ce7 66 } // namespace mbed