Adam Green
Library for interfacing to Sparkfun Weather Meters.
Dependents: WeatherStation Deneme testgeneral ... more
DebouncedFallingEdgeCounter.h@0:457832d52954, 2012-02-25 (annotated)
- Committer:
- AdamGreen
- Date:
- Sat Feb 25 03:23:51 2012 +0000
- Revision:
- 0:457832d52954
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| AdamGreen | 0:457832d52954 | 1 | /* Copyright 2012 Adam Green (http://mbed.org/users/AdamGreen/) |
| AdamGreen | 0:457832d52954 | 2 | |
| AdamGreen | 0:457832d52954 | 3 | Licensed under the Apache License, Version 2.0 (the "License"); |
| AdamGreen | 0:457832d52954 | 4 | you may not use this file except in compliance with the License. |
| AdamGreen | 0:457832d52954 | 5 | You may obtain a copy of the License at |
| AdamGreen | 0:457832d52954 | 6 | |
| AdamGreen | 0:457832d52954 | 7 | http://www.apache.org/licenses/LICENSE-2.0 |
| AdamGreen | 0:457832d52954 | 8 | |
| AdamGreen | 0:457832d52954 | 9 | Unless required by applicable law or agreed to in writing, software |
| AdamGreen | 0:457832d52954 | 10 | distributed under the License is distributed on an "AS IS" BASIS, |
| AdamGreen | 0:457832d52954 | 11 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| AdamGreen | 0:457832d52954 | 12 | See the License for the specific language governing permissions and |
| AdamGreen | 0:457832d52954 | 13 | limitations under the License. |
| AdamGreen | 0:457832d52954 | 14 | */ |
| AdamGreen | 0:457832d52954 | 15 | /* Header file for wrapper class of InterruptIn used for counting falling edge |
| AdamGreen | 0:457832d52954 | 16 | events with specified hold off time for the purpose of debouncing. |
| AdamGreen | 0:457832d52954 | 17 | */ |
| AdamGreen | 0:457832d52954 | 18 | #ifndef _DEBOUNCED_FALLING_EDGE_COUNT_H_ |
| AdamGreen | 0:457832d52954 | 19 | #define _DEBOUNCED_FALLING_EDGE_COUNT_H_ |
| AdamGreen | 0:457832d52954 | 20 | |
| AdamGreen | 0:457832d52954 | 21 | namespace AFP |
| AdamGreen | 0:457832d52954 | 22 | { |
| AdamGreen | 0:457832d52954 | 23 | |
| AdamGreen | 0:457832d52954 | 24 | class CDebouncedFallingEdgeCounter |
| AdamGreen | 0:457832d52954 | 25 | { |
| AdamGreen | 0:457832d52954 | 26 | protected: |
| AdamGreen | 0:457832d52954 | 27 | InterruptIn m_FallingEdgeInterruptIn; |
| AdamGreen | 0:457832d52954 | 28 | // UNDONE: Run for over 30 minutes and make sure that this rolls over as expected. |
| AdamGreen | 0:457832d52954 | 29 | Timer m_Timer; |
| AdamGreen | 0:457832d52954 | 30 | unsigned int m_IgnoreTimeForDebounce; |
| AdamGreen | 0:457832d52954 | 31 | unsigned int m_LastFallingEdgeTime; |
| AdamGreen | 0:457832d52954 | 32 | unsigned int m_FallingEdgeCount; |
| AdamGreen | 0:457832d52954 | 33 | |
| AdamGreen | 0:457832d52954 | 34 | public: |
| AdamGreen | 0:457832d52954 | 35 | CDebouncedFallingEdgeCounter(PinName InterruptInPin, unsigned int IgnoreTimeForDebounceInMicroSeconds); |
| AdamGreen | 0:457832d52954 | 36 | |
| AdamGreen | 0:457832d52954 | 37 | unsigned int GetCountAndZero(); |
| AdamGreen | 0:457832d52954 | 38 | void ZeroCount(); |
| AdamGreen | 0:457832d52954 | 39 | unsigned int GetCount(); |
| AdamGreen | 0:457832d52954 | 40 | |
| AdamGreen | 0:457832d52954 | 41 | protected: |
| AdamGreen | 0:457832d52954 | 42 | void InitLastFallingEdgeTime(); |
| AdamGreen | 0:457832d52954 | 43 | void InitLastFallingEdgeTime(unsigned int CurrentTime); |
| AdamGreen | 0:457832d52954 | 44 | void FallingEdgeISR(); |
| AdamGreen | 0:457832d52954 | 45 | void RefreshTimers(); |
| AdamGreen | 0:457832d52954 | 46 | unsigned int TimeSinceLastFallingEdge(unsigned int CurrentTime); |
| AdamGreen | 0:457832d52954 | 47 | }; |
| AdamGreen | 0:457832d52954 | 48 | |
| AdamGreen | 0:457832d52954 | 49 | } // namespace AFP |
| AdamGreen | 0:457832d52954 | 50 | using namespace AFP; |
| AdamGreen | 0:457832d52954 | 51 | |
| AdamGreen | 0:457832d52954 | 52 | #endif // _DEBOUNCED_FALLING_EDGE_COUNT_H_ |