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platform/mbed_wait_api.h@2:7aab896b1a3b, 2019-03-13 (annotated)
- Committer:
- kevman
- Date:
- Wed Mar 13 11:03:24 2019 +0000
- Revision:
- 2:7aab896b1a3b
- Parent:
- 0:38ceb79fef03
2019-03-13
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
kevman | 0:38ceb79fef03 | 1 | |
kevman | 0:38ceb79fef03 | 2 | /** \addtogroup platform */ |
kevman | 0:38ceb79fef03 | 3 | /** @{*/ |
kevman | 0:38ceb79fef03 | 4 | /** |
kevman | 0:38ceb79fef03 | 5 | * \defgroup platform_wait_api wait_api functions |
kevman | 0:38ceb79fef03 | 6 | * @{ |
kevman | 0:38ceb79fef03 | 7 | */ |
kevman | 0:38ceb79fef03 | 8 | |
kevman | 0:38ceb79fef03 | 9 | /* mbed Microcontroller Library |
kevman | 0:38ceb79fef03 | 10 | * Copyright (c) 2006-2013 ARM Limited |
kevman | 0:38ceb79fef03 | 11 | * |
kevman | 0:38ceb79fef03 | 12 | * Licensed under the Apache License, Version 2.0 (the "License"); |
kevman | 0:38ceb79fef03 | 13 | * you may not use this file except in compliance with the License. |
kevman | 0:38ceb79fef03 | 14 | * You may obtain a copy of the License at |
kevman | 0:38ceb79fef03 | 15 | * |
kevman | 0:38ceb79fef03 | 16 | * http://www.apache.org/licenses/LICENSE-2.0 |
kevman | 0:38ceb79fef03 | 17 | * |
kevman | 0:38ceb79fef03 | 18 | * Unless required by applicable law or agreed to in writing, software |
kevman | 0:38ceb79fef03 | 19 | * distributed under the License is distributed on an "AS IS" BASIS, |
kevman | 0:38ceb79fef03 | 20 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
kevman | 0:38ceb79fef03 | 21 | * See the License for the specific language governing permissions and |
kevman | 0:38ceb79fef03 | 22 | * limitations under the License. |
kevman | 0:38ceb79fef03 | 23 | */ |
kevman | 0:38ceb79fef03 | 24 | #ifndef MBED_WAIT_API_H |
kevman | 0:38ceb79fef03 | 25 | #define MBED_WAIT_API_H |
kevman | 0:38ceb79fef03 | 26 | |
kevman | 0:38ceb79fef03 | 27 | #ifdef __cplusplus |
kevman | 0:38ceb79fef03 | 28 | extern "C" { |
kevman | 0:38ceb79fef03 | 29 | #endif |
kevman | 0:38ceb79fef03 | 30 | |
kevman | 0:38ceb79fef03 | 31 | /** Generic wait functions. |
kevman | 0:38ceb79fef03 | 32 | * |
kevman | 0:38ceb79fef03 | 33 | * These provide simple NOP type wait capabilities. |
kevman | 0:38ceb79fef03 | 34 | * |
kevman | 0:38ceb79fef03 | 35 | * Example: |
kevman | 0:38ceb79fef03 | 36 | * @code |
kevman | 0:38ceb79fef03 | 37 | * #include "mbed.h" |
kevman | 0:38ceb79fef03 | 38 | * |
kevman | 0:38ceb79fef03 | 39 | * DigitalOut heartbeat(LED1); |
kevman | 0:38ceb79fef03 | 40 | * |
kevman | 0:38ceb79fef03 | 41 | * int main() { |
kevman | 0:38ceb79fef03 | 42 | * while (1) { |
kevman | 0:38ceb79fef03 | 43 | * heartbeat = 1; |
kevman | 0:38ceb79fef03 | 44 | * wait(0.5); |
kevman | 0:38ceb79fef03 | 45 | * heartbeat = 0; |
kevman | 0:38ceb79fef03 | 46 | * wait(0.5); |
kevman | 0:38ceb79fef03 | 47 | * } |
kevman | 0:38ceb79fef03 | 48 | * } |
kevman | 0:38ceb79fef03 | 49 | * @endcode |
kevman | 0:38ceb79fef03 | 50 | */ |
kevman | 0:38ceb79fef03 | 51 | |
kevman | 0:38ceb79fef03 | 52 | /** Waits for a number of seconds, with microsecond resolution (within |
kevman | 0:38ceb79fef03 | 53 | * the accuracy of single precision floating point). |
kevman | 0:38ceb79fef03 | 54 | * |
kevman | 0:38ceb79fef03 | 55 | * @param s number of seconds to wait |
kevman | 0:38ceb79fef03 | 56 | * |
kevman | 0:38ceb79fef03 | 57 | * @note |
kevman | 0:38ceb79fef03 | 58 | * If the RTOS is present, this function always spins to get the exact number of microseconds, |
kevman | 0:38ceb79fef03 | 59 | * which potentially affects power (such as preventing deep sleep) and multithread performance. |
kevman | 0:38ceb79fef03 | 60 | * You can avoid it by using Thread::wait(). |
kevman | 0:38ceb79fef03 | 61 | */ |
kevman | 0:38ceb79fef03 | 62 | void wait(float s); |
kevman | 0:38ceb79fef03 | 63 | |
kevman | 0:38ceb79fef03 | 64 | /** Waits a number of milliseconds. |
kevman | 0:38ceb79fef03 | 65 | * |
kevman | 0:38ceb79fef03 | 66 | * @param ms the whole number of milliseconds to wait |
kevman | 0:38ceb79fef03 | 67 | * |
kevman | 0:38ceb79fef03 | 68 | * @note |
kevman | 0:38ceb79fef03 | 69 | * If the RTOS is present, this function always spins to get the exact number of microseconds, |
kevman | 0:38ceb79fef03 | 70 | * which potentially affects power (such as preventing deep sleep) and multithread performance. |
kevman | 0:38ceb79fef03 | 71 | * You can avoid it by using Thread::wait(). |
kevman | 0:38ceb79fef03 | 72 | */ |
kevman | 0:38ceb79fef03 | 73 | void wait_ms(int ms); |
kevman | 0:38ceb79fef03 | 74 | |
kevman | 0:38ceb79fef03 | 75 | /** Waits a number of microseconds. |
kevman | 0:38ceb79fef03 | 76 | * |
kevman | 0:38ceb79fef03 | 77 | * @param us the whole number of microseconds to wait |
kevman | 0:38ceb79fef03 | 78 | * |
kevman | 0:38ceb79fef03 | 79 | * @note |
kevman | 0:38ceb79fef03 | 80 | * If the RTOS is present, this function always spins to get the exact number of microseconds, |
kevman | 0:38ceb79fef03 | 81 | * which potentially affects power (such as preventing deep sleep) and multithread performance. |
kevman | 0:38ceb79fef03 | 82 | */ |
kevman | 0:38ceb79fef03 | 83 | void wait_us(int us); |
kevman | 0:38ceb79fef03 | 84 | |
kevman | 0:38ceb79fef03 | 85 | #ifdef __cplusplus |
kevman | 0:38ceb79fef03 | 86 | } |
kevman | 0:38ceb79fef03 | 87 | #endif |
kevman | 0:38ceb79fef03 | 88 | |
kevman | 0:38ceb79fef03 | 89 | #endif |
kevman | 0:38ceb79fef03 | 90 | |
kevman | 0:38ceb79fef03 | 91 | /** @}*/ |
kevman | 0:38ceb79fef03 | 92 | /** @}*/ |