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https://github.com/RobTillaart/Arduino.git
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52 lines
1016 B
C
52 lines
1016 B
C
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//
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// FILE: AnalogKeypad.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.2
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// DATE: 2019-01-31
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// PURPOSE: Class for analog keypad
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// URL: https://github.com/RobTillaart/Arduino.git
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//
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// Released to the public domain
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//
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#ifndef AnalogKeypad_h
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#define AnalogKeypad_h
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#include "Arduino.h"
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#define ANALOGKEYPAD_LIB_VERSION "0.1.2"
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#define NOKEY 0x00
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#define PRESSED 0x80
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#define RELEASED 0x40
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#define REPEATED 0x20
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#define CHANGED 0x10
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class AnalogKeypad
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{
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public:
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explicit AnalogKeypad(const uint8_t pin);
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// returns 0 if no key pressed
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// otherwise returns key pressed first => ignoring fluctuations
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// 2nd or more presses simultaneous are ignored
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uint8_t pressed();
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// returns 0 if no key pressed
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// otherwise returns key pressed (may fluctuate)
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uint8_t read();
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// event alike approach
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// switch(int e = event())
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uint8_t event();
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uint8_t key() { return _lastKey; } ;
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private:
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uint8_t rawRead();
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uint8_t _pin;
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uint8_t _lastKey;
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};
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#endif
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// -- END OF FILE --
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