Opencv 3.1 project on GR-PEACH board
Fork of gr-peach-opencv-project by
drivers/Timer.cpp@170:54ff26da7eb6, 2017-07-04 (annotated)
- Committer:
- thedo
- Date:
- Tue Jul 04 06:23:13 2017 +0000
- Revision:
- 170:54ff26da7eb6
- Parent:
- 167:1657b442184c
project opencv 3.1 on GR PEACH board, no use SD card.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
thedo | 167:1657b442184c | 1 | /* mbed Microcontroller Library |
thedo | 167:1657b442184c | 2 | * Copyright (c) 2006-2013 ARM Limited |
thedo | 167:1657b442184c | 3 | * |
thedo | 167:1657b442184c | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
thedo | 167:1657b442184c | 5 | * you may not use this file except in compliance with the License. |
thedo | 167:1657b442184c | 6 | * You may obtain a copy of the License at |
thedo | 167:1657b442184c | 7 | * |
thedo | 167:1657b442184c | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
thedo | 167:1657b442184c | 9 | * |
thedo | 167:1657b442184c | 10 | * Unless required by applicable law or agreed to in writing, software |
thedo | 167:1657b442184c | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
thedo | 167:1657b442184c | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
thedo | 167:1657b442184c | 13 | * See the License for the specific language governing permissions and |
thedo | 167:1657b442184c | 14 | * limitations under the License. |
thedo | 167:1657b442184c | 15 | */ |
thedo | 167:1657b442184c | 16 | #include "drivers/Timer.h" |
thedo | 167:1657b442184c | 17 | #include "hal/ticker_api.h" |
thedo | 167:1657b442184c | 18 | #include "hal/us_ticker_api.h" |
thedo | 167:1657b442184c | 19 | #include "platform/mbed_critical.h" |
thedo | 167:1657b442184c | 20 | |
thedo | 167:1657b442184c | 21 | namespace mbed { |
thedo | 167:1657b442184c | 22 | |
thedo | 167:1657b442184c | 23 | Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()) { |
thedo | 167:1657b442184c | 24 | reset(); |
thedo | 167:1657b442184c | 25 | } |
thedo | 167:1657b442184c | 26 | |
thedo | 167:1657b442184c | 27 | Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data) { |
thedo | 167:1657b442184c | 28 | reset(); |
thedo | 167:1657b442184c | 29 | } |
thedo | 167:1657b442184c | 30 | |
thedo | 167:1657b442184c | 31 | void Timer::start() { |
thedo | 167:1657b442184c | 32 | core_util_critical_section_enter(); |
thedo | 167:1657b442184c | 33 | if (!_running) { |
thedo | 167:1657b442184c | 34 | _start = ticker_read_us(_ticker_data); |
thedo | 167:1657b442184c | 35 | _running = 1; |
thedo | 167:1657b442184c | 36 | } |
thedo | 167:1657b442184c | 37 | core_util_critical_section_exit(); |
thedo | 167:1657b442184c | 38 | } |
thedo | 167:1657b442184c | 39 | |
thedo | 167:1657b442184c | 40 | void Timer::stop() { |
thedo | 167:1657b442184c | 41 | core_util_critical_section_enter(); |
thedo | 167:1657b442184c | 42 | _time += slicetime(); |
thedo | 167:1657b442184c | 43 | _running = 0; |
thedo | 167:1657b442184c | 44 | core_util_critical_section_exit(); |
thedo | 167:1657b442184c | 45 | } |
thedo | 167:1657b442184c | 46 | |
thedo | 167:1657b442184c | 47 | int Timer::read_us() { |
thedo | 167:1657b442184c | 48 | return read_high_resolution_us(); |
thedo | 167:1657b442184c | 49 | } |
thedo | 167:1657b442184c | 50 | |
thedo | 167:1657b442184c | 51 | float Timer::read() { |
thedo | 167:1657b442184c | 52 | return (float)read_us() / 1000000.0f; |
thedo | 167:1657b442184c | 53 | } |
thedo | 167:1657b442184c | 54 | |
thedo | 167:1657b442184c | 55 | int Timer::read_ms() { |
thedo | 167:1657b442184c | 56 | return read_high_resolution_us() / 1000; |
thedo | 167:1657b442184c | 57 | } |
thedo | 167:1657b442184c | 58 | |
thedo | 167:1657b442184c | 59 | us_timestamp_t Timer::read_high_resolution_us() { |
thedo | 167:1657b442184c | 60 | core_util_critical_section_enter(); |
thedo | 167:1657b442184c | 61 | us_timestamp_t time = _time + slicetime(); |
thedo | 167:1657b442184c | 62 | core_util_critical_section_exit(); |
thedo | 167:1657b442184c | 63 | return time; |
thedo | 167:1657b442184c | 64 | } |
thedo | 167:1657b442184c | 65 | |
thedo | 167:1657b442184c | 66 | us_timestamp_t Timer::slicetime() { |
thedo | 167:1657b442184c | 67 | us_timestamp_t ret = 0; |
thedo | 167:1657b442184c | 68 | core_util_critical_section_enter(); |
thedo | 167:1657b442184c | 69 | if (_running) { |
thedo | 167:1657b442184c | 70 | ret = ticker_read_us(_ticker_data) - _start; |
thedo | 167:1657b442184c | 71 | } |
thedo | 167:1657b442184c | 72 | core_util_critical_section_exit(); |
thedo | 167:1657b442184c | 73 | return ret; |
thedo | 167:1657b442184c | 74 | } |
thedo | 167:1657b442184c | 75 | |
thedo | 167:1657b442184c | 76 | void Timer::reset() { |
thedo | 167:1657b442184c | 77 | core_util_critical_section_enter(); |
thedo | 167:1657b442184c | 78 | _start = ticker_read_us(_ticker_data); |
thedo | 167:1657b442184c | 79 | _time = 0; |
thedo | 167:1657b442184c | 80 | core_util_critical_section_exit(); |
thedo | 167:1657b442184c | 81 | } |
thedo | 167:1657b442184c | 82 | |
thedo | 167:1657b442184c | 83 | Timer::operator float() { |
thedo | 167:1657b442184c | 84 | return read(); |
thedo | 167:1657b442184c | 85 | } |
thedo | 167:1657b442184c | 86 | |
thedo | 167:1657b442184c | 87 | } // namespace mbed |
thedo | 167:1657b442184c | 88 |