mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-09-20 00:55:58 -04:00
110 lines
1.8 KiB
C++
110 lines
1.8 KiB
C++
//
|
|
// FILE: AD5245.cpp
|
|
// AUTHOR: Rob Tillaart
|
|
// VERSION: 0.2.0
|
|
// 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)
|
|
{
|
|
_wire = &Wire;
|
|
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 --
|