98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
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#ifndef MAX44009_H
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#define MAX44009_H
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//
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// FILE: Max44009.h
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// AUTHOR: Rob dot Tillaart at gmail dot com
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// VERSION: 0.1.9
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// PURPOSE: library for MAX44009 lux sensor Arduino
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// HISTORY: See Max440099.cpp
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//
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// Released to the public domain
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//
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#include "Wire.h"
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#if defined(ARDUINO) && 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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#define MAX44009_LIB_VERSION "0.1.9"
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// I2C ADDRESSES
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#define MAX44009_A0_LOW 0x4A
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#define MAX44009_A0_HIGH 0x4B
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// REGISTERS
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#define MAX44009_INTERRUPT_STATUS 0x00
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#define MAX44009_INTERRUPT_ENABLE 0x01
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#define MAX44009_CONFIGURATION 0x02
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#define MAX44009_LUX_READING_HIGH 0x03
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#define MAX44009_LUX_READING_LOW 0x04
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#define MAX44009_THRESHOLD_HIGH 0x05
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#define MAX44009_THRESHOLD_LOW 0x06
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#define MAX44009_THRESHOLD_TIMER 0x07
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// CONFIGURATION MASKS
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#define MAX44009_CFG_CONTINUOUS 0x80
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#define MAX44009_CFG_MANUAL 0x40
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#define MAX44009_CFG_CDR 0x08
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#define MAX44009_CFG_TIMER 0x07
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class Max44009
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{
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public:
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// dataPin and clockPin are only used by ESP8266
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// for UNO ignore these (and its warning)
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Max44009(const uint8_t address, const uint8_t dataPin = 5, const uint8_t clockPin = 4);
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Max44009(const uint8_t address, bool continuousMode);
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float getLux();
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int getError();
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void setHighThreshold(const float);
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float getHighThreshold(void);
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void setLowThreshold(const float);
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float getLowThreshold(void);
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void setThresholdTimer(const uint8_t);
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uint8_t getThresholdTimer();
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void enableInterrupt() { write(MAX44009_INTERRUPT_ENABLE, 1); };
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void disableInterrupt() { write(MAX44009_INTERRUPT_ENABLE, 0); };
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bool interruptEnabled() { return read(MAX44009_INTERRUPT_ENABLE) & 0x01; };
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uint8_t getInterruptStatus() { return read(MAX44009_INTERRUPT_STATUS) & 0x01; };
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// check datasheet for detailed behavior
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void setConfiguration(uint8_t);
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uint8_t getConfiguration();
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void setAutomaticMode();
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void setContinuousMode();
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// CDR = Current Divisor Ratio
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// CDR = 1 ==> only 1/8th is measured
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// TIM = Time Integration Measurement (table)
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// 000 800ms
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// 001 400ms
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// 010 200ms
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// 011 100ms
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// 100 50ms
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// 101 25ms
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// 110 12.5ms
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// 111 6.25ms
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void setManualMode(uint8_t CDR, uint8_t TIM);
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private:
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void setThreshold(uint8_t, float);
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float getThreshold(uint8_t);
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uint8_t read(uint8_t reg);
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void write(uint8_t, uint8_t);
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uint8_t _address;
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uint8_t _data;
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int _error;
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};
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#endif
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// END OF FILE
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