Steve Kim / mbed-src

mbed library sources(for async_print)

Dependents:   AsyncPrint

Fork of mbed-src by mbed official

cpp/Timer.cpp@2:143cac498751, 2013-02-18 (annotated)

Committer:
emilmont
Date:
Mon Feb 18 11:44:18 2013 +0000
Revision:
2:143cac498751
Parent:
0:fd0d7bdfcdc2
Child:
8:4e25b8576136
Update mbed sources to Rev 59

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:fd0d7bdfcdc2 1 /* mbed Microcontroller Library
emilmont 2:143cac498751 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 0:fd0d7bdfcdc2 3 *
emilmont 2:143cac498751 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 2:143cac498751 5 * you may not use this file except in compliance with the License.
emilmont 2:143cac498751 6 * You may obtain a copy of the License at
mbed_official 0:fd0d7bdfcdc2 7 *
emilmont 2:143cac498751 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 0:fd0d7bdfcdc2 9 *
emilmont 2:143cac498751 10 * Unless required by applicable law or agreed to in writing, software
emilmont 2:143cac498751 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 2:143cac498751 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 2:143cac498751 13 * See the License for the specific language governing permissions and
emilmont 2:143cac498751 14 * limitations under the License.
mbed_official 0:fd0d7bdfcdc2 15 */
mbed_official 0:fd0d7bdfcdc2 16 #include "Timer.h"
mbed_official 0:fd0d7bdfcdc2 17 #include "us_ticker_api.h"
mbed_official 0:fd0d7bdfcdc2 18
mbed_official 0:fd0d7bdfcdc2 19 namespace mbed {
mbed_official 0:fd0d7bdfcdc2 20
mbed_official 0:fd0d7bdfcdc2 21 Timer::Timer() {
mbed_official 0:fd0d7bdfcdc2 22 reset();
mbed_official 0:fd0d7bdfcdc2 23 }
mbed_official 0:fd0d7bdfcdc2 24
mbed_official 0:fd0d7bdfcdc2 25 void Timer::start() {
mbed_official 0:fd0d7bdfcdc2 26 _start = us_ticker_read();
mbed_official 0:fd0d7bdfcdc2 27 _running = 1;
mbed_official 0:fd0d7bdfcdc2 28 }
mbed_official 0:fd0d7bdfcdc2 29
mbed_official 0:fd0d7bdfcdc2 30 void Timer::stop() {
mbed_official 0:fd0d7bdfcdc2 31 _time += slicetime();
mbed_official 0:fd0d7bdfcdc2 32 _running = 0;
mbed_official 0:fd0d7bdfcdc2 33 }
mbed_official 0:fd0d7bdfcdc2 34
mbed_official 0:fd0d7bdfcdc2 35 int Timer::read_us() {
mbed_official 0:fd0d7bdfcdc2 36 return _time + slicetime();
mbed_official 0:fd0d7bdfcdc2 37 }
emilmont 2:143cac498751 38
mbed_official 0:fd0d7bdfcdc2 39 float Timer::read() {
mbed_official 0:fd0d7bdfcdc2 40 return (float)read_us() / 1000000.0;
mbed_official 0:fd0d7bdfcdc2 41 }
mbed_official 0:fd0d7bdfcdc2 42
mbed_official 0:fd0d7bdfcdc2 43 int Timer::read_ms() {
mbed_official 0:fd0d7bdfcdc2 44 return read_us() / 1000;
mbed_official 0:fd0d7bdfcdc2 45 }
mbed_official 0:fd0d7bdfcdc2 46
mbed_official 0:fd0d7bdfcdc2 47 int Timer::slicetime() {
mbed_official 0:fd0d7bdfcdc2 48 if (_running) {
mbed_official 0:fd0d7bdfcdc2 49 return us_ticker_read() - _start;
mbed_official 0:fd0d7bdfcdc2 50 } else {
mbed_official 0:fd0d7bdfcdc2 51 return 0;
mbed_official 0:fd0d7bdfcdc2 52 }
mbed_official 0:fd0d7bdfcdc2 53 }
mbed_official 0:fd0d7bdfcdc2 54
mbed_official 0:fd0d7bdfcdc2 55 void Timer::reset() {
mbed_official 0:fd0d7bdfcdc2 56 _start = us_ticker_read();
mbed_official 0:fd0d7bdfcdc2 57 _time = 0;
mbed_official 0:fd0d7bdfcdc2 58 }
mbed_official 0:fd0d7bdfcdc2 59
mbed_official 0:fd0d7bdfcdc2 60 #ifdef MBED_OPERATORS
mbed_official 0:fd0d7bdfcdc2 61 Timer::operator float() {
mbed_official 0:fd0d7bdfcdc2 62 return read();
mbed_official 0:fd0d7bdfcdc2 63 }
mbed_official 0:fd0d7bdfcdc2 64 #endif
mbed_official 0:fd0d7bdfcdc2 65
mbed_official 0:fd0d7bdfcdc2 66 } // namespace mbed