GY-63_MS5611/libraries/MCP4725/MCP4725.h
RobTillaart feeaab9d20 #131 replaced TWBR register code with wire.setClock()
+ added begin(dataPin, clockPin) for ESP platforms too
2019-10-14 13:16:57 +02:00

99 lines
2.2 KiB
C++

#ifndef MCP4725_H
#define MCP4725_H
//
// FILE: MCP4725.h
// AUTHOR: Rob Tillaart
// PURPOSE: Simple MCP4725 DAC (12 bit I2C) library for Arduino
// VERSION: 0.1.9
// HISTORY: See MCP4725.cpp
// URL: https://github.com/RobTillaart/Arduino/
//
// Released to the public domain
//
#include <Wire.h>
#if defined(ARDUINO) && ARDUINO >= 100
#include "Arduino.h"
#else
#include "WProgram.h"
#include "Wstring.h"
#include "Wiring.h"
#endif
#define MCP4725_VERSION "0.1.9"
// regisiterMode
#define MCP4725_DAC 0x40
#define MCP4725_DACEEPROM 0x60
// constants
#define MCP4725_MAXVALUE 4095
// errors
#define MCP4725_VALUE_ERROR -999
#define MCP4725_REG_ERROR -998
// page 22
#define MCP4725_GC_RESET 0x06
#define MCP4725_GC_WAKEUP 0x09
// powerDown Mode - TODO ENUM?
#define MCP4725_PDMODE_NORMAL 0x00
#define MCP4725_PDMODE_1K 0x01
#define MCP4725_PDMODE_100K 0x02
#define MCP4725_PDMODE_500K 0x03
// conditional to minimize footprint.
//#define MCP4725_EXTENDED
//#define MCP4725_POWERDOWNMODE
class MCP4725
{
public:
explicit MCP4725(const uint8_t deviceAddress);
#if defined(ESP8266) || defined(ESP32)
void begin(const uint8_t dataPin, const uint8_t clockPin);
#endif
void begin();
// uses writeFastMode
int setValue(const uint16_t value);
// returns last value set - cached - much faster than readDAC();
uint16_t getValue();
#ifdef MCP4725_EXTENDED
int writeDAC(const uint16_t value, const bool EEPROM = false);
bool RDY();
uint16_t readDAC();
uint16_t readEEPROM();
#endif
#ifdef MCP4725_POWERDOWNMODE
// experimental
int writePowerDownMode(const uint8_t PDM, const bool EEPROM = false);
uint8_t readPowerDownModeEEPROM();
uint8_t readPowerDownModeDAC();
int powerOnReset();
int powerOnWakeUp();
#endif
private:
uint8_t _deviceAddress;
uint16_t _lastValue;
uint8_t _powerDownMode; // DATASHEET P15?
int writeFastMode(const uint16_t value);
#ifdef MCP4725_EXTENDED
int writeRegisterMode(const uint16_t value, uint8_t reg);
uint8_t readRegister(uint8_t* buffer, const uint8_t length);
#endif
#ifdef MCP4725_POWERDOWNMODE
int generalCall(const uint8_t gc);
#endif
};
#endif
// END OF FILE