GY-63_MS5611/libraries/AD5245/AD5245.cpp
2023-09-21 21:37:28 +02:00

109 lines
1.8 KiB
C++

//
// FILE: AD5245.cpp
// AUTHOR: Rob Tillaart
// VERSION: 0.2.1
// PURPOSE: Arduino library for I2C digital potentiometer AD5245.
// DATE: 2022-07-31
// URL: https://github.com/RobTillaart/AD5245
#include "AD5245.h"
#define AD5245_WRITE 0x00
#define AD5245_RESET 0x40
#define AD5245_SHUTDOWN 0x20
AD5245::AD5245(const uint8_t address, TwoWire *wire)
{
// address: 0x010110x = 0x2C or 0x2D
_address = address;
_wire = wire;
_lastValue = AD5245_MIDPOINT; // power on reset => mid position
}
#if defined (ESP8266) || defined(ESP32)
bool AD5245::begin(uint8_t dataPin, uint8_t clockPin)
{
if ((dataPin < 255) && (clockPin < 255))
{
_wire->begin(dataPin, clockPin);
} else {
_wire->begin();
}
if (! isConnected()) return false;
reset();
return true;
}
#endif
bool AD5245::begin()
{
_wire->begin();
if (! isConnected()) return false;
reset();
return true;
}
bool AD5245::isConnected()
{
_wire->beginTransmission(_address);
return ( _wire->endTransmission() == 0);
}
uint8_t AD5245::reset()
{
uint8_t cmd = AD5245_RESET;
_lastValue = AD5245_MIDPOINT;
return send(cmd, _lastValue);
}
uint8_t AD5245::write(const uint8_t value)
{
uint8_t cmd = AD5245_WRITE;
_lastValue = value;
return send(cmd, value);
}
uint8_t AD5245::read()
{
return _lastValue;
}
uint8_t AD5245::readDevice()
{
_wire->requestFrom(_address, (uint8_t)1);
return _wire->read();
}
// read datasheet
uint8_t AD5245::shutDown()
{
uint8_t cmd = AD5245_SHUTDOWN;
return send(cmd, 0);
}
//////////////////////////////////////////////////////////
//
// PRIVATE
//
uint8_t AD5245::send(const uint8_t cmd, const uint8_t value)
{
_wire->beginTransmission(_address);
_wire->write(cmd);
_wire->write(value);
return _wire->endTransmission();
}
// -- END OF FILE --