39 lines
730 B
C
39 lines
730 B
C
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/*
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* Rotary encoder library for Arduino.
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*/
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#ifndef Rotary_h
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#define Rotary_h
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#include "Arduino.h"
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// Enable this to emit codes twice per step.
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// #define HALF_STEP
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// Values returned by 'process'
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// No complete step yet.
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#define DIR_NONE 0x0
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// Clockwise step.
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#define DIR_CW 0x10
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// Counter-clockwise step.
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#define DIR_CCW 0x20
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class Rotary
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{
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public:
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Rotary(char, char);
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unsigned char process();
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void begin(bool internalPullup=true, bool flipLogicForPulldown=false);
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inline unsigned char pin_1() const { return pin1; }
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inline unsigned char pin_2() const { return pin2; }
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private:
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unsigned char state;
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unsigned char pin1;
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unsigned char pin2;
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unsigned char inverter;
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};
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#endif
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