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52 lines
1.0 KiB
C++
52 lines
1.0 KiB
C++
#pragma once
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//
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// FILE: AnalogKeypad.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.2.2
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// DATE: 2019-01-31
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// PURPOSE: Class for (Robotdyn) 4x4 and 4x3 analogue keypad
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// URL: https://github.com/RobTillaart/AnalogKeypad
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//
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#include "Arduino.h"
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#define ANALOGKEYPAD_LIB_VERSION (F("0.2.2"))
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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, const uint8_t bits = 10);
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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()) see examples
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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 _analogPin;
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uint8_t _analogShift;
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uint8_t _lastKey;
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};
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// -- END OF FILE --
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