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72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
5 years ago
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/***************************************************
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This is a library for the MLX90614 Temp Sensor
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Designed specifically to work with the MLX90614 sensors in the
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adafruit shop
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----> https://www.adafruit.com/products/1748
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----> https://www.adafruit.com/products/1749
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These sensors use I2C to communicate, 2 pins are required to
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interface
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Adafruit invests time and resources providing this open source code,
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please support Adafruit and open-source hardware by purchasing
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products from Adafruit!
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Written by Limor Fried/Ladyada for Adafruied in any redistribution
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****************************************************/
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#if (ARDUINO >= 100)
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#include "Arduino.h"
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#else
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#include "WProgram.h"
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#endif
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#include "Wire.h"
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#define MLX90614_I2CADDR 0x5A
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// RAM
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#define MLX90614_RAWIR1 0x04
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#define MLX90614_RAWIR2 0x05
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#define MLX90614_TA 0x06
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#define MLX90614_TOBJ1 0x07
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#define MLX90614_TOBJ2 0x08
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// EEPROM
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#define MLX90614_TOMAX 0x20
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#define MLX90614_TOMIN 0x21
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#define MLX90614_PWMCTRL 0x22
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#define MLX90614_TARANGE 0x23
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#define MLX90614_EMISS 0x24
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#define MLX90614_CONFIG 0x25
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#define MLX90614_ADDR 0x2E
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#define MLX90614_ID1 0x3C
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#define MLX90614_ID2 0x3D
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#define MLX90614_ID3 0x3E
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#define MLX90614_ID4 0x3F
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/**
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* @brief Class to read from and control a MLX90614 Temp Sensor
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*
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*/
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class Adafruit_MLX90614 {
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public:
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Adafruit_MLX90614(uint8_t addr = MLX90614_I2CADDR);
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bool begin();
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double readObjectTempC(void);
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double readAmbientTempC(void);
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double readObjectTempF(void);
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double readAmbientTempF(void);
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uint16_t readEmissivityReg(void);
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void writeEmissivityReg(uint16_t ereg);
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double readEmissivity(void);
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void writeEmissivity(double emissivity);
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private:
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float readTemp(uint8_t reg);
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uint16_t read16(uint8_t addr);
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void write16(uint8_t addr, uint16_t data);
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byte crc8(byte *addr, byte len);
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uint8_t _addr;
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};
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