mirror of
https://github.com/RobTillaart/Arduino.git
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101 lines
2.2 KiB
C++
101 lines
2.2 KiB
C++
#pragma once
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//
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// FILE: MCP4725.h
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// AUTHOR: Rob Tillaart
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// PURPOSE: Arduino library for 12 bit I2C DAC - MCP4725
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// VERSION: 0.3.5
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// URL: https://github.com/RobTillaart/MCP4725
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//
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#include "Wire.h"
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#include "Arduino.h"
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#define MCP4725_VERSION (F("0.3.5"))
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// CONSTANTS
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#define MCP4725_MAXVALUE 4095
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// ERRORS
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#define MCP4725_OK 0
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#define MCP4725_VALUE_ERROR -999
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#define MCP4725_REG_ERROR -998
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#define MCP4725_NOT_CONNECTED -997
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// powerDown Mode - TODO ENUM?
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#define MCP4725_PDMODE_NORMAL 0x00
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#define MCP4725_PDMODE_1K 0x01
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#define MCP4725_PDMODE_100K 0x02
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#define MCP4725_PDMODE_500K 0x03
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#define MCP4725_MIDPOINT 2048
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class MCP4725
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{
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public:
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explicit MCP4725(const uint8_t deviceAddress, TwoWire *wire = &Wire);
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#if defined(ESP8266) || defined(ESP32)
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bool begin(const uint8_t dataPin, const uint8_t clockPin);
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#endif
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#if defined (ARDUINO_ARCH_RP2040)
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bool begin(int sda, int scl);
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#endif
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bool begin();
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bool isConnected();
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// uses writeFastMode
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int setValue(const uint16_t value = 0);
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// returns last value set - cached - much faster than readDAC();
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uint16_t getValue();
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// 0..100.0% - no input check.
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int setPercentage(float percentage = 0);
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float getPercentage() { return getValue() * (100.0 / MCP4725_MAXVALUE); };
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int writeDAC(const uint16_t value, const bool EEPROM = false);
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bool ready();
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uint32_t getLastWriteEEPROM() { return _lastWriteEEPROM; };
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uint16_t readDAC();
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uint16_t readEEPROM();
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// experimental
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int writePowerDownMode(const uint8_t PDM, const bool EEPROM = false);
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uint8_t readPowerDownModeEEPROM();
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uint8_t readPowerDownModeDAC();
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int powerOnReset();
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int powerOnWakeUp();
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private:
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uint8_t _deviceAddress;
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uint16_t _lastValue;
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uint8_t _powerDownMode; // DATASHEET P15?
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int _writeFastMode(const uint16_t value);
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uint32_t _lastWriteEEPROM;
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int _writeRegisterMode(const uint16_t value, uint8_t reg);
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uint8_t _readRegister(uint8_t* buffer, const uint8_t length);
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int _generalCall(const uint8_t gc);
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TwoWire* _wire;
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};
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// -- END OF FILE --
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