mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
drivers/Timer.cpp@187:0387e8f68319, 2018-09-06 (annotated)
- Committer:
- AnnaBridge
- Date:
- Thu Sep 06 13:40:20 2018 +0100
- Revision:
- 187:0387e8f68319
- Parent:
- 186:707f6e361f3e
- Child:
- 188:bcfe06ba3d64
mbed-dev library. Release version 163
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 149:156823d33999 | 1 | /* mbed Microcontroller Library |
<> | 149:156823d33999 | 2 | * Copyright (c) 2006-2013 ARM Limited |
<> | 149:156823d33999 | 3 | * |
<> | 149:156823d33999 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
<> | 149:156823d33999 | 5 | * you may not use this file except in compliance with the License. |
<> | 149:156823d33999 | 6 | * You may obtain a copy of the License at |
<> | 149:156823d33999 | 7 | * |
<> | 149:156823d33999 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
<> | 149:156823d33999 | 9 | * |
<> | 149:156823d33999 | 10 | * Unless required by applicable law or agreed to in writing, software |
<> | 149:156823d33999 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
<> | 149:156823d33999 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
<> | 149:156823d33999 | 13 | * See the License for the specific language governing permissions and |
<> | 149:156823d33999 | 14 | * limitations under the License. |
<> | 149:156823d33999 | 15 | */ |
<> | 149:156823d33999 | 16 | #include "drivers/Timer.h" |
<> | 149:156823d33999 | 17 | #include "hal/ticker_api.h" |
<> | 149:156823d33999 | 18 | #include "hal/us_ticker_api.h" |
<> | 160:d5399cc887bb | 19 | #include "platform/mbed_critical.h" |
AnnaBridge | 175:af195413fb11 | 20 | #include "hal/lp_ticker_api.h" |
<> | 149:156823d33999 | 21 | |
<> | 149:156823d33999 | 22 | namespace mbed { |
<> | 149:156823d33999 | 23 | |
AnnaBridge | 187:0387e8f68319 | 24 | Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()), _lock_deepsleep(true) |
AnnaBridge | 187:0387e8f68319 | 25 | { |
<> | 149:156823d33999 | 26 | reset(); |
<> | 149:156823d33999 | 27 | } |
<> | 149:156823d33999 | 28 | |
AnnaBridge | 187:0387e8f68319 | 29 | Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data), _lock_deepsleep(true) |
AnnaBridge | 187:0387e8f68319 | 30 | { |
<> | 149:156823d33999 | 31 | reset(); |
Anna Bridge |
186:707f6e361f3e | 32 | #if DEVICE_LPTICKER |
AnnaBridge | 175:af195413fb11 | 33 | _lock_deepsleep = (data != get_lp_ticker_data()); |
AnnaBridge | 175:af195413fb11 | 34 | #endif |
AnnaBridge | 175:af195413fb11 | 35 | } |
AnnaBridge | 175:af195413fb11 | 36 | |
AnnaBridge | 187:0387e8f68319 | 37 | Timer::~Timer() |
AnnaBridge | 187:0387e8f68319 | 38 | { |
AnnaBridge | 175:af195413fb11 | 39 | core_util_critical_section_enter(); |
AnnaBridge | 175:af195413fb11 | 40 | if (_running) { |
AnnaBridge | 187:0387e8f68319 | 41 | if (_lock_deepsleep) { |
AnnaBridge | 175:af195413fb11 | 42 | sleep_manager_unlock_deep_sleep(); |
AnnaBridge | 175:af195413fb11 | 43 | } |
AnnaBridge | 175:af195413fb11 | 44 | } |
AnnaBridge | 175:af195413fb11 | 45 | _running = 0; |
AnnaBridge | 175:af195413fb11 | 46 | core_util_critical_section_exit(); |
<> | 149:156823d33999 | 47 | } |
<> | 149:156823d33999 | 48 | |
AnnaBridge | 187:0387e8f68319 | 49 | void Timer::start() |
AnnaBridge | 187:0387e8f68319 | 50 | { |
<> | 149:156823d33999 | 51 | core_util_critical_section_enter(); |
<> | 149:156823d33999 | 52 | if (!_running) { |
AnnaBridge | 187:0387e8f68319 | 53 | if (_lock_deepsleep) { |
AnnaBridge | 175:af195413fb11 | 54 | sleep_manager_lock_deep_sleep(); |
AnnaBridge | 175:af195413fb11 | 55 | } |
AnnaBridge | 167:e84263d55307 | 56 | _start = ticker_read_us(_ticker_data); |
<> | 149:156823d33999 | 57 | _running = 1; |
<> | 149:156823d33999 | 58 | } |
<> | 149:156823d33999 | 59 | core_util_critical_section_exit(); |
<> | 149:156823d33999 | 60 | } |
<> | 149:156823d33999 | 61 | |
AnnaBridge | 187:0387e8f68319 | 62 | void Timer::stop() |
AnnaBridge | 187:0387e8f68319 | 63 | { |
<> | 149:156823d33999 | 64 | core_util_critical_section_enter(); |
<> | 149:156823d33999 | 65 | _time += slicetime(); |
AnnaBridge | 174:b96e65c34a4d | 66 | if (_running) { |
AnnaBridge | 187:0387e8f68319 | 67 | if (_lock_deepsleep) { |
AnnaBridge | 175:af195413fb11 | 68 | sleep_manager_unlock_deep_sleep(); |
AnnaBridge | 175:af195413fb11 | 69 | } |
AnnaBridge | 174:b96e65c34a4d | 70 | } |
<> | 149:156823d33999 | 71 | _running = 0; |
<> | 149:156823d33999 | 72 | core_util_critical_section_exit(); |
<> | 149:156823d33999 | 73 | } |
<> | 149:156823d33999 | 74 | |
AnnaBridge | 187:0387e8f68319 | 75 | int Timer::read_us() |
AnnaBridge | 187:0387e8f68319 | 76 | { |
AnnaBridge | 167:e84263d55307 | 77 | return read_high_resolution_us(); |
<> | 149:156823d33999 | 78 | } |
<> | 149:156823d33999 | 79 | |
AnnaBridge | 187:0387e8f68319 | 80 | float Timer::read() |
AnnaBridge | 187:0387e8f68319 | 81 | { |
<> | 149:156823d33999 | 82 | return (float)read_us() / 1000000.0f; |
<> | 149:156823d33999 | 83 | } |
<> | 149:156823d33999 | 84 | |
AnnaBridge | 187:0387e8f68319 | 85 | int Timer::read_ms() |
AnnaBridge | 187:0387e8f68319 | 86 | { |
AnnaBridge | 167:e84263d55307 | 87 | return read_high_resolution_us() / 1000; |
<> | 149:156823d33999 | 88 | } |
<> | 149:156823d33999 | 89 | |
AnnaBridge | 187:0387e8f68319 | 90 | us_timestamp_t Timer::read_high_resolution_us() |
AnnaBridge | 187:0387e8f68319 | 91 | { |
<> | 149:156823d33999 | 92 | core_util_critical_section_enter(); |
AnnaBridge | 167:e84263d55307 | 93 | us_timestamp_t time = _time + slicetime(); |
AnnaBridge | 167:e84263d55307 | 94 | core_util_critical_section_exit(); |
AnnaBridge | 167:e84263d55307 | 95 | return time; |
AnnaBridge | 167:e84263d55307 | 96 | } |
AnnaBridge | 167:e84263d55307 | 97 | |
AnnaBridge | 187:0387e8f68319 | 98 | us_timestamp_t Timer::slicetime() |
AnnaBridge | 187:0387e8f68319 | 99 | { |
AnnaBridge | 167:e84263d55307 | 100 | us_timestamp_t ret = 0; |
AnnaBridge | 167:e84263d55307 | 101 | core_util_critical_section_enter(); |
<> | 149:156823d33999 | 102 | if (_running) { |
AnnaBridge | 167:e84263d55307 | 103 | ret = ticker_read_us(_ticker_data) - _start; |
<> | 149:156823d33999 | 104 | } |
<> | 149:156823d33999 | 105 | core_util_critical_section_exit(); |
<> | 149:156823d33999 | 106 | return ret; |
<> | 149:156823d33999 | 107 | } |
<> | 149:156823d33999 | 108 | |
AnnaBridge | 187:0387e8f68319 | 109 | void Timer::reset() |
AnnaBridge | 187:0387e8f68319 | 110 | { |
<> | 149:156823d33999 | 111 | core_util_critical_section_enter(); |
AnnaBridge | 167:e84263d55307 | 112 | _start = ticker_read_us(_ticker_data); |
<> | 149:156823d33999 | 113 | _time = 0; |
<> | 149:156823d33999 | 114 | core_util_critical_section_exit(); |
<> | 149:156823d33999 | 115 | } |
<> | 149:156823d33999 | 116 | |
AnnaBridge | 187:0387e8f68319 | 117 | Timer::operator float() |
AnnaBridge | 187:0387e8f68319 | 118 | { |
<> | 149:156823d33999 | 119 | return read(); |
<> | 149:156823d33999 | 120 | } |
<> | 149:156823d33999 | 121 | |
<> | 149:156823d33999 | 122 | } // namespace mbed |