45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
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/***************************************************
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This is a library for the HTU21D-F Humidity & Temp Sensor
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Designed specifically to work with the HTU21D-F sensor from Adafruit
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----> https://www.adafruit.com/products/1899
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These displays 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 Adafruit Industries.
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BSD license, all text above must be included 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 HTU21DF_I2CADDR 0x40
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#define HTU21DF_READTEMP 0xE3
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#define HTU21DF_READHUM 0xE5
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#define HTU21DF_WRITEREG 0xE6
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#define HTU21DF_READREG 0xE7
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#define HTU21DF_RESET 0xFE
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class Adafruit_HTU21DF {
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public:
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Adafruit_HTU21DF();
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boolean begin(void);
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float readTemperature(void);
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float readHumidity(void);
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void reset(void);
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private:
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boolean readData(void);
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float humidity, temp;
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};
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