Arduino library for MCP4728 quad channel, 12-bit voltage output Digital-to-Analog Convertor with non-volatile memory and I2C compatible Serial Interface
This library is highly inspired from this great work
#include <Wire.h>
#include "MCP4728.h"
MCP4728 dac;
void setup()
{
Serial.begin(115200); // initialize serial interface for print()
Wire.begin();
dac.attach(Wire, 14);
dac.readRegisters();
dac.selectVref(MCP4728::VREF::VDD, MCP4728::VREF::VDD, MCP4728::VREF::INTERNAL_2_8V, MCP4728::VREF::INTERNAL_2_8V);
dac.selectPowerDown(MCP4728::PWR_DOWN::GND_100KOHM, MCP4728::PWR_DOWN::GND_100KOHM, MCP4728::PWR_DOWN::GND_500KOHM, MCP4728::PWR_DOWN::GND_500KOHM);
dac.selectGain(MCP4728::GAIN::X1, MCP4728::GAIN::X1, MCP4728::GAIN::X2, MCP4728::GAIN::X2);
dac.analogWrite(MCP4728::DAC_CH::A, 111);
dac.analogWrite(MCP4728::DAC_CH::B, 222);
dac.analogWrite(MCP4728::DAC_CH::C, 333);
dac.analogWrite(MCP4728::DAC_CH::D, 444);
dac.enable(true);
dac.readRegisters();
printStatus();
delay(5000);
}
void loop()
{
static int count = 0;
if (++count > 4000) count = 0;
dac.analogWrite(count, count, count, count);
delay(10);
dac.readRegisters();
printStatus();
}
void printStatus()
{
Serial.println("NAME Vref Gain PowerDown DACData");
for (int i = 0; i < 4; ++i)
{
Serial.print("DAC");
Serial.print(i, DEC);
Serial.print(" ");
Serial.print(" ");
Serial.print(dac.getVref(i), BIN);
Serial.print(" ");
Serial.print(dac.getGain(i), BIN);
Serial.print(" ");
Serial.print(dac.getPowerDown(i), BIN);
Serial.print(" ");
Serial.println(dac.getDACData(i), DEC);
Serial.print("EEPROM");
Serial.print(i, DEC);
Serial.print(" ");
Serial.print(dac.getVref(i, true), BIN);
Serial.print(" ");
Serial.print(dac.getGain(i, true), BIN);
Serial.print(" ");
Serial.print(dac.getPowerDown(i, true), BIN);
Serial.print(" ");
Serial.println(dac.getDACData(i, true), DEC);
}
Serial.println(" ");
}MIT