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?
User | Revision | Line number | New 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 |