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https://github.com/RobTillaart/Arduino.git
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58 lines
1.1 KiB
C++
58 lines
1.1 KiB
C++
#pragma once
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//
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// FILE: DHT12.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.5.0
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// PURPOSE: Arduino library for I2C DHT12 temperature and humidity sensor.
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// URL: https://github.com/RobTillaart/DHT12
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#include "Arduino.h"
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#include "Wire.h"
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#define DHT12_LIB_VERSION (F("0.5.0"))
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#define DHT12_OK 0
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#define DHT12_ERROR_CHECKSUM -10
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#define DHT12_ERROR_CONNECT -11
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#define DHT12_MISSING_BYTES -12
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class DHT12
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{
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public:
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DHT12(TwoWire *wire = &Wire); // to be tested explicitly
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bool begin();
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bool isConnected();
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int8_t read();
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float getHumidity();
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float getTemperature();
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// allows 1st order calibration
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void setHumOffset(float offset = 0);
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void setTempOffset(float offset = 0);
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float getHumOffset();
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float getTempOffset();
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uint32_t lastRead();
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private:
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float _humidity;
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float _temperature;
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float _humOffset;
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float _tempOffset;
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uint8_t _bits[5];
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uint32_t _lastRead;
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int _readSensor();
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TwoWire* _wire;
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};
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// -- END OF FILE --
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