mbed library sources. Supersedes mbed-src.
Fork of mbed-dev by
api/Timer.h@148:e70627d019e9, 2016-09-28 (annotated)
- Committer:
- StevieWray
- Date:
- Wed Sep 28 08:45:18 2016 +0000
- Revision:
- 148:e70627d019e9
- Parent:
- 144:ef7eb2e8f9f7
Fixed DAC output on STM32F3 boards to allow 3 outputs
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 144:ef7eb2e8f9f7 | 1 | /* mbed Microcontroller Library |
<> | 144:ef7eb2e8f9f7 | 2 | * Copyright (c) 2006-2013 ARM Limited |
<> | 144:ef7eb2e8f9f7 | 3 | * |
<> | 144:ef7eb2e8f9f7 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
<> | 144:ef7eb2e8f9f7 | 5 | * you may not use this file except in compliance with the License. |
<> | 144:ef7eb2e8f9f7 | 6 | * You may obtain a copy of the License at |
<> | 144:ef7eb2e8f9f7 | 7 | * |
<> | 144:ef7eb2e8f9f7 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
<> | 144:ef7eb2e8f9f7 | 9 | * |
<> | 144:ef7eb2e8f9f7 | 10 | * Unless required by applicable law or agreed to in writing, software |
<> | 144:ef7eb2e8f9f7 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
<> | 144:ef7eb2e8f9f7 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
<> | 144:ef7eb2e8f9f7 | 13 | * See the License for the specific language governing permissions and |
<> | 144:ef7eb2e8f9f7 | 14 | * limitations under the License. |
<> | 144:ef7eb2e8f9f7 | 15 | */ |
<> | 144:ef7eb2e8f9f7 | 16 | #ifndef MBED_TIMER_H |
<> | 144:ef7eb2e8f9f7 | 17 | #define MBED_TIMER_H |
<> | 144:ef7eb2e8f9f7 | 18 | |
<> | 144:ef7eb2e8f9f7 | 19 | #include "platform.h" |
<> | 144:ef7eb2e8f9f7 | 20 | #include "ticker_api.h" |
<> | 144:ef7eb2e8f9f7 | 21 | |
<> | 144:ef7eb2e8f9f7 | 22 | namespace mbed { |
<> | 144:ef7eb2e8f9f7 | 23 | |
<> | 144:ef7eb2e8f9f7 | 24 | /** A general purpose timer |
<> | 144:ef7eb2e8f9f7 | 25 | * |
<> | 144:ef7eb2e8f9f7 | 26 | * @Note Synchronization level: Interrupt safe |
<> | 144:ef7eb2e8f9f7 | 27 | * |
<> | 144:ef7eb2e8f9f7 | 28 | * Example: |
<> | 144:ef7eb2e8f9f7 | 29 | * @code |
<> | 144:ef7eb2e8f9f7 | 30 | * // Count the time to toggle a LED |
<> | 144:ef7eb2e8f9f7 | 31 | * |
<> | 144:ef7eb2e8f9f7 | 32 | * #include "mbed.h" |
<> | 144:ef7eb2e8f9f7 | 33 | * |
<> | 144:ef7eb2e8f9f7 | 34 | * Timer timer; |
<> | 144:ef7eb2e8f9f7 | 35 | * DigitalOut led(LED1); |
<> | 144:ef7eb2e8f9f7 | 36 | * int begin, end; |
<> | 144:ef7eb2e8f9f7 | 37 | * |
<> | 144:ef7eb2e8f9f7 | 38 | * int main() { |
<> | 144:ef7eb2e8f9f7 | 39 | * timer.start(); |
<> | 144:ef7eb2e8f9f7 | 40 | * begin = timer.read_us(); |
<> | 144:ef7eb2e8f9f7 | 41 | * led = !led; |
<> | 144:ef7eb2e8f9f7 | 42 | * end = timer.read_us(); |
<> | 144:ef7eb2e8f9f7 | 43 | * printf("Toggle the led takes %d us", end - begin); |
<> | 144:ef7eb2e8f9f7 | 44 | * } |
<> | 144:ef7eb2e8f9f7 | 45 | * @endcode |
<> | 144:ef7eb2e8f9f7 | 46 | */ |
<> | 144:ef7eb2e8f9f7 | 47 | class Timer { |
<> | 144:ef7eb2e8f9f7 | 48 | |
<> | 144:ef7eb2e8f9f7 | 49 | public: |
<> | 144:ef7eb2e8f9f7 | 50 | Timer(); |
<> | 144:ef7eb2e8f9f7 | 51 | Timer(const ticker_data_t *data); |
<> | 144:ef7eb2e8f9f7 | 52 | |
<> | 144:ef7eb2e8f9f7 | 53 | /** Start the timer |
<> | 144:ef7eb2e8f9f7 | 54 | */ |
<> | 144:ef7eb2e8f9f7 | 55 | void start(); |
<> | 144:ef7eb2e8f9f7 | 56 | |
<> | 144:ef7eb2e8f9f7 | 57 | /** Stop the timer |
<> | 144:ef7eb2e8f9f7 | 58 | */ |
<> | 144:ef7eb2e8f9f7 | 59 | void stop(); |
<> | 144:ef7eb2e8f9f7 | 60 | |
<> | 144:ef7eb2e8f9f7 | 61 | /** Reset the timer to 0. |
<> | 144:ef7eb2e8f9f7 | 62 | * |
<> | 144:ef7eb2e8f9f7 | 63 | * If it was already counting, it will continue |
<> | 144:ef7eb2e8f9f7 | 64 | */ |
<> | 144:ef7eb2e8f9f7 | 65 | void reset(); |
<> | 144:ef7eb2e8f9f7 | 66 | |
<> | 144:ef7eb2e8f9f7 | 67 | /** Get the time passed in seconds |
<> | 144:ef7eb2e8f9f7 | 68 | */ |
<> | 144:ef7eb2e8f9f7 | 69 | float read(); |
<> | 144:ef7eb2e8f9f7 | 70 | |
<> | 144:ef7eb2e8f9f7 | 71 | /** Get the time passed in mili-seconds |
<> | 144:ef7eb2e8f9f7 | 72 | */ |
<> | 144:ef7eb2e8f9f7 | 73 | int read_ms(); |
<> | 144:ef7eb2e8f9f7 | 74 | |
<> | 144:ef7eb2e8f9f7 | 75 | /** Get the time passed in micro-seconds |
<> | 144:ef7eb2e8f9f7 | 76 | */ |
<> | 144:ef7eb2e8f9f7 | 77 | int read_us(); |
<> | 144:ef7eb2e8f9f7 | 78 | |
<> | 144:ef7eb2e8f9f7 | 79 | /** An operator shorthand for read() |
<> | 144:ef7eb2e8f9f7 | 80 | */ |
<> | 144:ef7eb2e8f9f7 | 81 | operator float(); |
<> | 144:ef7eb2e8f9f7 | 82 | |
<> | 144:ef7eb2e8f9f7 | 83 | protected: |
<> | 144:ef7eb2e8f9f7 | 84 | int slicetime(); |
<> | 144:ef7eb2e8f9f7 | 85 | int _running; // whether the timer is running |
<> | 144:ef7eb2e8f9f7 | 86 | unsigned int _start; // the start time of the latest slice |
<> | 144:ef7eb2e8f9f7 | 87 | int _time; // any accumulated time from previous slices |
<> | 144:ef7eb2e8f9f7 | 88 | const ticker_data_t *_ticker_data; |
<> | 144:ef7eb2e8f9f7 | 89 | }; |
<> | 144:ef7eb2e8f9f7 | 90 | |
<> | 144:ef7eb2e8f9f7 | 91 | } // namespace mbed |
<> | 144:ef7eb2e8f9f7 | 92 | |
<> | 144:ef7eb2e8f9f7 | 93 | #endif |