71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * *
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Main code by Thomas O Fredericks
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Rebounce and duration functions contributed by Eric Lowry
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Write function contributed by Jim Schimpf
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risingEdge and fallingEdge contributed by Tom Harkaway
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#ifndef Bounce_h
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#define Bounce_h
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#include <inttypes.h>
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class Bounce
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{
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public:
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// Initialize
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Bounce(uint8_t pin, unsigned long interval_millis );
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// Sets the debounce interval
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void interval(unsigned long interval_millis);
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// Updates the pin
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// Returns 1 if the state changed
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// Returns 0 if the state did not change
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int update();
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// Forces the pin to signal a change (through update()) in X milliseconds
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// even if the state does not actually change
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// Example: press and hold a button and have it repeat every X milliseconds
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void rebounce(unsigned long interval);
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// Returns the updated pin state
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int read();
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// Sets the stored pin state
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void write(int new_state);
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// Returns the number of milliseconds the pin has been in the current state
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unsigned long duration();
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// The risingEdge method is true for one scan after the de-bounced input goes from off-to-on.
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bool risingEdge();
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// The fallingEdge method it true for one scan after the de-bounced input goes from on-to-off.
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bool fallingEdge();
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protected:
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int debounce();
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unsigned long previous_millis, interval_millis, rebounce_millis;
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uint8_t state;
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uint8_t pin;
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uint8_t stateChanged;
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};
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#endif
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