From Ben Katz mbed-dev library. Removed unnecessary target files to reduce the overall size by a factor of 10 to make it easier to import into the online IDE.
Dependents: motor_driver motor_driver_screaming_fix
drivers/Timer.cpp@0:083111ae2a11, 2020-11-26 (annotated)
- Committer:
- saloutos
- Date:
- Thu Nov 26 04:08:56 2020 +0000
- Revision:
- 0:083111ae2a11
first commit of leaned mbed dev lib
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
saloutos | 0:083111ae2a11 | 1 | /* mbed Microcontroller Library |
saloutos | 0:083111ae2a11 | 2 | * Copyright (c) 2006-2013 ARM Limited |
saloutos | 0:083111ae2a11 | 3 | * |
saloutos | 0:083111ae2a11 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
saloutos | 0:083111ae2a11 | 5 | * you may not use this file except in compliance with the License. |
saloutos | 0:083111ae2a11 | 6 | * You may obtain a copy of the License at |
saloutos | 0:083111ae2a11 | 7 | * |
saloutos | 0:083111ae2a11 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
saloutos | 0:083111ae2a11 | 9 | * |
saloutos | 0:083111ae2a11 | 10 | * Unless required by applicable law or agreed to in writing, software |
saloutos | 0:083111ae2a11 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
saloutos | 0:083111ae2a11 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
saloutos | 0:083111ae2a11 | 13 | * See the License for the specific language governing permissions and |
saloutos | 0:083111ae2a11 | 14 | * limitations under the License. |
saloutos | 0:083111ae2a11 | 15 | */ |
saloutos | 0:083111ae2a11 | 16 | #include "drivers/Timer.h" |
saloutos | 0:083111ae2a11 | 17 | #include "hal/ticker_api.h" |
saloutos | 0:083111ae2a11 | 18 | #include "hal/us_ticker_api.h" |
saloutos | 0:083111ae2a11 | 19 | #include "platform/mbed_critical.h" |
saloutos | 0:083111ae2a11 | 20 | #include "hal/lp_ticker_api.h" |
saloutos | 0:083111ae2a11 | 21 | |
saloutos | 0:083111ae2a11 | 22 | namespace mbed { |
saloutos | 0:083111ae2a11 | 23 | |
saloutos | 0:083111ae2a11 | 24 | Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()), _lock_deepsleep(true) { |
saloutos | 0:083111ae2a11 | 25 | reset(); |
saloutos | 0:083111ae2a11 | 26 | } |
saloutos | 0:083111ae2a11 | 27 | |
saloutos | 0:083111ae2a11 | 28 | Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data), _lock_deepsleep(true) { |
saloutos | 0:083111ae2a11 | 29 | reset(); |
saloutos | 0:083111ae2a11 | 30 | #if DEVICE_LOWPOWERTIMER |
saloutos | 0:083111ae2a11 | 31 | _lock_deepsleep = (data != get_lp_ticker_data()); |
saloutos | 0:083111ae2a11 | 32 | #endif |
saloutos | 0:083111ae2a11 | 33 | } |
saloutos | 0:083111ae2a11 | 34 | |
saloutos | 0:083111ae2a11 | 35 | Timer::~Timer() { |
saloutos | 0:083111ae2a11 | 36 | core_util_critical_section_enter(); |
saloutos | 0:083111ae2a11 | 37 | if (_running) { |
saloutos | 0:083111ae2a11 | 38 | if(_lock_deepsleep) { |
saloutos | 0:083111ae2a11 | 39 | sleep_manager_unlock_deep_sleep(); |
saloutos | 0:083111ae2a11 | 40 | } |
saloutos | 0:083111ae2a11 | 41 | } |
saloutos | 0:083111ae2a11 | 42 | _running = 0; |
saloutos | 0:083111ae2a11 | 43 | core_util_critical_section_exit(); |
saloutos | 0:083111ae2a11 | 44 | } |
saloutos | 0:083111ae2a11 | 45 | |
saloutos | 0:083111ae2a11 | 46 | void Timer::start() { |
saloutos | 0:083111ae2a11 | 47 | core_util_critical_section_enter(); |
saloutos | 0:083111ae2a11 | 48 | if (!_running) { |
saloutos | 0:083111ae2a11 | 49 | if(_lock_deepsleep) { |
saloutos | 0:083111ae2a11 | 50 | sleep_manager_lock_deep_sleep(); |
saloutos | 0:083111ae2a11 | 51 | } |
saloutos | 0:083111ae2a11 | 52 | _start = ticker_read_us(_ticker_data); |
saloutos | 0:083111ae2a11 | 53 | _running = 1; |
saloutos | 0:083111ae2a11 | 54 | } |
saloutos | 0:083111ae2a11 | 55 | core_util_critical_section_exit(); |
saloutos | 0:083111ae2a11 | 56 | } |
saloutos | 0:083111ae2a11 | 57 | |
saloutos | 0:083111ae2a11 | 58 | void Timer::stop() { |
saloutos | 0:083111ae2a11 | 59 | core_util_critical_section_enter(); |
saloutos | 0:083111ae2a11 | 60 | _time += slicetime(); |
saloutos | 0:083111ae2a11 | 61 | if (_running) { |
saloutos | 0:083111ae2a11 | 62 | if(_lock_deepsleep) { |
saloutos | 0:083111ae2a11 | 63 | sleep_manager_unlock_deep_sleep(); |
saloutos | 0:083111ae2a11 | 64 | } |
saloutos | 0:083111ae2a11 | 65 | } |
saloutos | 0:083111ae2a11 | 66 | _running = 0; |
saloutos | 0:083111ae2a11 | 67 | core_util_critical_section_exit(); |
saloutos | 0:083111ae2a11 | 68 | } |
saloutos | 0:083111ae2a11 | 69 | |
saloutos | 0:083111ae2a11 | 70 | int Timer::read_us() { |
saloutos | 0:083111ae2a11 | 71 | return read_high_resolution_us(); |
saloutos | 0:083111ae2a11 | 72 | } |
saloutos | 0:083111ae2a11 | 73 | |
saloutos | 0:083111ae2a11 | 74 | float Timer::read() { |
saloutos | 0:083111ae2a11 | 75 | return (float)read_us() / 1000000.0f; |
saloutos | 0:083111ae2a11 | 76 | } |
saloutos | 0:083111ae2a11 | 77 | |
saloutos | 0:083111ae2a11 | 78 | int Timer::read_ms() { |
saloutos | 0:083111ae2a11 | 79 | return read_high_resolution_us() / 1000; |
saloutos | 0:083111ae2a11 | 80 | } |
saloutos | 0:083111ae2a11 | 81 | |
saloutos | 0:083111ae2a11 | 82 | us_timestamp_t Timer::read_high_resolution_us() { |
saloutos | 0:083111ae2a11 | 83 | core_util_critical_section_enter(); |
saloutos | 0:083111ae2a11 | 84 | us_timestamp_t time = _time + slicetime(); |
saloutos | 0:083111ae2a11 | 85 | core_util_critical_section_exit(); |
saloutos | 0:083111ae2a11 | 86 | return time; |
saloutos | 0:083111ae2a11 | 87 | } |
saloutos | 0:083111ae2a11 | 88 | |
saloutos | 0:083111ae2a11 | 89 | us_timestamp_t Timer::slicetime() { |
saloutos | 0:083111ae2a11 | 90 | us_timestamp_t ret = 0; |
saloutos | 0:083111ae2a11 | 91 | core_util_critical_section_enter(); |
saloutos | 0:083111ae2a11 | 92 | if (_running) { |
saloutos | 0:083111ae2a11 | 93 | ret = ticker_read_us(_ticker_data) - _start; |
saloutos | 0:083111ae2a11 | 94 | } |
saloutos | 0:083111ae2a11 | 95 | core_util_critical_section_exit(); |
saloutos | 0:083111ae2a11 | 96 | return ret; |
saloutos | 0:083111ae2a11 | 97 | } |
saloutos | 0:083111ae2a11 | 98 | |
saloutos | 0:083111ae2a11 | 99 | void Timer::reset() { |
saloutos | 0:083111ae2a11 | 100 | core_util_critical_section_enter(); |
saloutos | 0:083111ae2a11 | 101 | _start = ticker_read_us(_ticker_data); |
saloutos | 0:083111ae2a11 | 102 | _time = 0; |
saloutos | 0:083111ae2a11 | 103 | core_util_critical_section_exit(); |
saloutos | 0:083111ae2a11 | 104 | } |
saloutos | 0:083111ae2a11 | 105 | |
saloutos | 0:083111ae2a11 | 106 | Timer::operator float() { |
saloutos | 0:083111ae2a11 | 107 | return read(); |
saloutos | 0:083111ae2a11 | 108 | } |
saloutos | 0:083111ae2a11 | 109 | |
saloutos | 0:083111ae2a11 | 110 | } // namespace mbed |