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58 lines
1.3 KiB
C++
58 lines
1.3 KiB
C++
#pragma once
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//
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// FILE: rotaryDecoder.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.0
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// DATE: 2021-05-08
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// PURPOSE: rotary decoder library for Arduino
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// URL: https://github.com/RobTillaart/rotaryDecoder
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#include "Arduino.h"
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#include "Wire.h"
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#define ROTARY_DECODER_LIB_VERSION (F("0.1.0"))
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class rotaryDecoder
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{
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public:
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explicit rotaryDecoder(const int8_t address, TwoWire *wire = &Wire);
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#if defined (ESP8266) || defined(ESP32)
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bool begin(uint8_t sda, uint8_t scl, uint8_t cnt = 4);
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#endif
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bool begin(uint8_t cnt = 4);
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bool isConnected();
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void readInitialState();
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// for polling version,
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// checkChange is bit faster than a call to update
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// so usefull if there are only a few updates
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bool checkChange();
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// read and update the counters
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bool update(); // assumes two directions => +1 and -1
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bool updateSingle(); // assumes single direction => + ++ +++
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int32_t getValue(uint8_t re) { return _encoder[re]; };
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void setValue(uint8_t re, int32_t val = 0) { _encoder[re] = val; };
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// DEBUG
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uint8_t getLastPosition(uint8_t re) { return _lastPos[re]; };
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private:
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uint8_t _cnt = 0;
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uint8_t _lastVal = 0;
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uint8_t _lastPos[4] = { 0,0,0,0 };
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int32_t _encoder[4] = { 0,0,0,0 };
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uint8_t _read8();
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uint8_t _address;
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TwoWire * _wire;
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};
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// -- END OF FILE --
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