mirror of
https://github.com/RobTillaart/Arduino.git
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94 lines
1.4 KiB
C++
94 lines
1.4 KiB
C++
//
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// FILE: AD5246.cpp
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.0
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// PURPOSE: Arduino Library for AD5246, I2C 128 step rheostat.
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// DATE: 2023-08-02
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// URL: https://github.com/RobTillaart/AD5246
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#include "AD5246.h"
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AD5246::AD5246(TwoWire *wire)
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{
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// fixed address 0x2E.
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_wire = wire;
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_lastValue = AD5246_MIDPOINT; // power on reset => mid position
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}
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#if defined (ESP8266) || defined(ESP32)
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bool AD5246::begin(uint8_t dataPin, uint8_t clockPin)
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{
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_wire = &Wire;
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if ((dataPin < 255) && (clockPin < 255))
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{
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_wire->begin(dataPin, clockPin);
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} else {
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_wire->begin();
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}
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if (! isConnected()) return false;
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reset();
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return true;
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}
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#endif
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bool AD5246::begin()
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{
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_wire->begin();
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if (! isConnected()) return false;
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reset();
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return true;
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}
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bool AD5246::isConnected()
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{
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_wire->beginTransmission(_address);
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return ( _wire->endTransmission() == 0);
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}
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uint8_t AD5246::reset()
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{
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return write(AD5246_MIDPOINT);
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}
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uint8_t AD5246::write(uint8_t value)
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{
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if (value > 127) value = 127;
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_lastValue = value;
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return send(value);
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}
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uint8_t AD5246::read()
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{
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return _lastValue;
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}
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uint8_t AD5246::readDevice()
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{
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_wire->requestFrom(_address, (uint8_t)1);
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return _wire->read();
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}
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//////////////////////////////////////////////////////////
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//
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// PRIVATE
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//
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uint8_t AD5246::send(const uint8_t value)
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{
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_wire->beginTransmission(_address);
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_wire->write(value);
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return _wire->endTransmission();
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}
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// -- END OF FILE --
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