test test test
Diff: snake-test/mbed/drivers/Timer.h
- Revision:
- 0:e4c5e6ec922e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/snake-test/mbed/drivers/Timer.h Mon May 25 19:06:11 2020 +0000 @@ -0,0 +1,112 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef MBED_TIMER_H +#define MBED_TIMER_H + +#include "platform/platform.h" +#include "hal/ticker_api.h" +#include "platform/NonCopyable.h" +#include "platform/mbed_power_mgmt.h" + +namespace mbed { +/** \addtogroup drivers */ + +/** A general purpose timer + * + * @note Synchronization level: Interrupt safe + * + * Example: + * @code + * // Count the time to toggle an LED + * + * #include "mbed.h" + * + * Timer timer; + * DigitalOut led(LED1); + * int begin, end; + * + * int main() { + * timer.start(); + * begin = timer.read_us(); + * led = !led; + * end = timer.read_us(); + * printf("Toggle the led takes %d us", end - begin); + * } + * @endcode + * @ingroup drivers + */ +class Timer : private NonCopyable<Timer> { + +public: + Timer(); + Timer(const ticker_data_t *data); + ~Timer(); + + /** Start the timer + */ + void start(); + + /** Stop the timer + */ + void stop(); + + /** Reset the timer to 0. + * + * If it was already running, it will continue + */ + void reset(); + + /** Get the time passed in seconds + * + * @returns Time passed in seconds + */ + float read(); + + /** Get the time passed in milliseconds + * + * @returns Time passed in milliseconds + */ + int read_ms(); + + /** Get the time passed in microseconds + * + * @returns Time passed in microseconds + */ + int read_us(); + + /** An operator shorthand for read() + */ + operator float(); + + /** Get in a high resolution type the time passed in microseconds. + * Returns a 64 bit integer. + */ + us_timestamp_t read_high_resolution_us(); + +#if !defined(DOXYGEN_ONLY) +protected: + us_timestamp_t slicetime(); + int _running; // whether the timer is running + us_timestamp_t _start; // the start time of the latest slice + us_timestamp_t _time; // any accumulated time from previous slices + const ticker_data_t *_ticker_data; + bool _lock_deepsleep; // flag that indicates if deep sleep should be disabled +}; +#endif + +} // namespace mbed + +#endif