Bluetooth UART support for the Adafruit BluefruitLE SPI, for the University of York Engineering Stage 1 project
utility/TimeoutTimer.h@0:a80552d32b80, 2021-02-06 (annotated)
- Committer:
- ajp109
- Date:
- Sat Feb 06 20:58:22 2021 +0000
- Revision:
- 0:a80552d32b80
- Child:
- 1:6ff0eee2da9c
Initial commit (not working)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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ajp109 | 0:a80552d32b80 | 1 | /**************************************************************************/ |
ajp109 | 0:a80552d32b80 | 2 | /*! |
ajp109 | 0:a80552d32b80 | 3 | @file TimeoutTimer.h |
ajp109 | 0:a80552d32b80 | 4 | @author hathach |
ajp109 | 0:a80552d32b80 | 5 | |
ajp109 | 0:a80552d32b80 | 6 | @section LICENSE |
ajp109 | 0:a80552d32b80 | 7 | |
ajp109 | 0:a80552d32b80 | 8 | Software License Agreement (BSD License) |
ajp109 | 0:a80552d32b80 | 9 | |
ajp109 | 0:a80552d32b80 | 10 | Copyright (c) 2014, Adafruit Industries (adafruit.com) |
ajp109 | 0:a80552d32b80 | 11 | All rights reserved. |
ajp109 | 0:a80552d32b80 | 12 | |
ajp109 | 0:a80552d32b80 | 13 | Redistribution and use in source and binary forms, with or without |
ajp109 | 0:a80552d32b80 | 14 | modification, are permitted provided that the following conditions are met: |
ajp109 | 0:a80552d32b80 | 15 | 1. Redistributions of source code must retain the above copyright |
ajp109 | 0:a80552d32b80 | 16 | notice, this list of conditions and the following disclaimer. |
ajp109 | 0:a80552d32b80 | 17 | 2. Redistributions in binary form must reproduce the above copyright |
ajp109 | 0:a80552d32b80 | 18 | notice, this list of conditions and the following disclaimer in the |
ajp109 | 0:a80552d32b80 | 19 | documentation and/or other materials provided with the distribution. |
ajp109 | 0:a80552d32b80 | 20 | 3. Neither the name of the copyright holders nor the |
ajp109 | 0:a80552d32b80 | 21 | names of its contributors may be used to endorse or promote products |
ajp109 | 0:a80552d32b80 | 22 | derived from this software without specific prior written permission. |
ajp109 | 0:a80552d32b80 | 23 | |
ajp109 | 0:a80552d32b80 | 24 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY |
ajp109 | 0:a80552d32b80 | 25 | EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
ajp109 | 0:a80552d32b80 | 26 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
ajp109 | 0:a80552d32b80 | 27 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY |
ajp109 | 0:a80552d32b80 | 28 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
ajp109 | 0:a80552d32b80 | 29 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
ajp109 | 0:a80552d32b80 | 30 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
ajp109 | 0:a80552d32b80 | 31 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
ajp109 | 0:a80552d32b80 | 32 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
ajp109 | 0:a80552d32b80 | 33 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
ajp109 | 0:a80552d32b80 | 34 | */ |
ajp109 | 0:a80552d32b80 | 35 | /**************************************************************************/ |
ajp109 | 0:a80552d32b80 | 36 | |
ajp109 | 0:a80552d32b80 | 37 | /** |
ajp109 | 0:a80552d32b80 | 38 | * @{ |
ajp109 | 0:a80552d32b80 | 39 | */ |
ajp109 | 0:a80552d32b80 | 40 | |
ajp109 | 0:a80552d32b80 | 41 | #ifndef _TIMEOUT_TIMER_H_ |
ajp109 | 0:a80552d32b80 | 42 | #define _TIMEOUT_TIMER_H_ |
ajp109 | 0:a80552d32b80 | 43 | |
ajp109 | 0:a80552d32b80 | 44 | class TimeoutTimer |
ajp109 | 0:a80552d32b80 | 45 | { |
ajp109 | 0:a80552d32b80 | 46 | private: |
ajp109 | 0:a80552d32b80 | 47 | Timer timer; |
ajp109 | 0:a80552d32b80 | 48 | chrono::milliseconds next, interval; |
ajp109 | 0:a80552d32b80 | 49 | |
ajp109 | 0:a80552d32b80 | 50 | public: |
ajp109 | 0:a80552d32b80 | 51 | TimeoutTimer() { set(0); } |
ajp109 | 0:a80552d32b80 | 52 | TimeoutTimer(uint32_t msec) { set(msec); } |
ajp109 | 0:a80552d32b80 | 53 | |
ajp109 | 0:a80552d32b80 | 54 | void set(uint32_t msec) { timer.reset(); next = msec * 1ms; interval = msec * 1ms; } |
ajp109 | 0:a80552d32b80 | 55 | bool expired(void) const { return (timer.elapsed_time() >= next); } |
ajp109 | 0:a80552d32b80 | 56 | void restart(void) { timer.reset(); next = interval; } |
ajp109 | 0:a80552d32b80 | 57 | void reset(void) { next += interval; } // used for periodic invoke to prevent drift |
ajp109 | 0:a80552d32b80 | 58 | }; |
ajp109 | 0:a80552d32b80 | 59 | |
ajp109 | 0:a80552d32b80 | 60 | #endif /* _TIMEOUT_TIMER_H_ */ |
ajp109 | 0:a80552d32b80 | 61 | |
ajp109 | 0:a80552d32b80 | 62 | /** @} */ |