mirror of
https://github.com/RobTillaart/Arduino.git
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97 lines
2.4 KiB
C++
97 lines
2.4 KiB
C++
#pragma once
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//
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// FILE: mcp9808.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.2.1
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// PURPOSE: Arduino Library for I2C mcp9808 temperature sensor
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// DATE: 2020-05-03
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// URL: https://github.com/RobTillaart/MCP9808_RT
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//
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#include "Arduino.h"
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#include "Wire.h"
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// VALID ADDRESSES,
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// max 8 sensors on one bus
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// 24..31 == 0x18..0x1F
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#define MCP9808_LIB_VERSION (F("0.2.1"))
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// CONFIGURATION REGISTER MASKS
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// check the datasheet for exact usage
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#define MCP9808_THYSTERESIS 0x0600
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#define MCP9808_SHUTDOWN 0x0100
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#define MCP9808_CRIT_LOCK 0x0080
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#define MCP9808_WIN_LOCK 0x0040
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#define MCP9808_INT_CLEAR 0x0020
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#define MCP9808_ALERT_STATUS 0x0010
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#define MCP9808_ALERT_CTRL 0x0008
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#define MCP9808_ALERT_SELECT 0x0004
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#define MCP9808_ALERT_POLAR 0x0002
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#define MCP9808_ALERT_MODE 0x0001
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class MCP9808
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{
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public:
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#if defined(ESP8266) || defined(ESP32)
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// dataPin and clockPin can be used for ESP8266
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MCP9808(const uint8_t address, const uint8_t dataPin = 255, const uint8_t clockPin = 255);
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#else
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MCP9808(const uint8_t address);
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#endif
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bool setAddress(const uint8_t address, TwoWire *wire = &Wire);
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bool isConnected();
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void setConfigRegister(uint16_t configuration);
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uint16_t getConfigRegister();
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void setTupper(float temperature);
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float getTupper();
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void setTlower(float temperature);
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float getTlower();
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void setTcritical(float temperature);
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float getTcritical();
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void setOffset(float offset = 0.0);
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float getOffset();
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float getTemperature();
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// getStatus() returns 0..7
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// to get latest status, getTemperature() must be called first
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uint8_t getStatus();
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void setResolution(uint8_t resolution = 3);
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uint8_t getResolution();
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uint16_t getManufacturerID();
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uint8_t getDeviceID();
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uint8_t getRevision();
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// Reserved Register, not used
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uint16_t getRFU();
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private:
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float _offset = 0;
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uint8_t _status = 0; // 0..7
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uint8_t _address;
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TwoWire* _wire;
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void writeFloat(uint8_t reg, float f);
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float readFloat(uint8_t reg);
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void writeReg8(uint8_t reg, uint8_t value);
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uint8_t readReg8(uint8_t reg);
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void writeReg16(uint8_t reg, uint16_t value);
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uint16_t readReg16(uint8_t reg);
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};
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// -- END OF FILE --
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