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83 lines
1.9 KiB
C++
83 lines
1.9 KiB
C++
#pragma once
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//
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// FILE: ML8511.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.11
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// DATE: 2020-02-03
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// PURPOSE: ML8511 - UV sensor - library for Arduino
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// URL: https://github.com/RobTillaart/ML8511
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//
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// NOTES
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// ML8511 is a 3.3 Volt device,
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// so do not connect to a 5V device (e.g. UNO)
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// this includes the ENABLE PIN !!
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//
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// +-------+--+
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// VIN |o +-+| mounting hole
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// 3V3 |o +-+|
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// GND |o |
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// OUT |o |
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// EN |o S | Sensor
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// +----------+
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#include <Arduino.h>
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#define ML8511_LIB_VERSION (F("0.1.11"))
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class ML8511
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{
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public:
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// if enablePin is omitted, one must connect EN to 3V3.
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ML8511(uint8_t analogPin, uint8_t enablePin = 0xFF);
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void reset(); // reset internal variables to initial value.
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// energyMode = HIGH or LOW;
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// returns mW per cm2
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float getUV(uint8_t energyMode = HIGH);
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// for external ADC
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float voltage2mW(float voltage);
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// voltage must be > 0 otherwise it is not set
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void setVoltsPerStep(float voltage, uint32_t steps);
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float getVoltsPerStep();
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// manually enable / disable
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void enable();
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void disable();
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bool isEnabled();
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// experimental estimate DUV index
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// WARNING: USE WITH CARE
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//
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// input in mW per cm2 == typical the output of getUV()
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float estimateDUVindex(float mWcm2);
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// https://github.com/RobTillaart/ML8511/issues/4
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// discusses the calibration
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// see readme.md how to reverse engineer the factor for
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// the estimateDUVindex() conversion function.
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// a value of 1.61 was found to be far more accurate
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//
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// returns false if f < 0.01 (to force positive factor only)
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bool setDUVfactor(float factor);
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float getDUVfactor();
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private:
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uint8_t _analogPin;
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uint8_t _enablePin;
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float _voltsPerStep;
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bool _enabled;
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float _DUVfactor;
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};
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// -- END OF FILE --
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