BH1750 Class Reference

BH1750 class. More...

#include <ErriezBH1750.h>

Public Member Functions
	BH1750 (uint8_t addrPinLevel=LOW)
	Constructor. More...
void	begin (BH1750_Mode_e mode, BH1750_Resolution_e resolution)
	Set mode and resolution. More...
void	powerDown ()
	Power down. Call startConversion() to power-up automatically.
void	startConversion ()
	Start conversion.
bool	isConversionCompleted ()
	Wait for completion. More...
bool	waitForCompletion ()
	Wait for completion. More...
uint16_t	read ()
	Read light level asynchronous from sensor The application is responsible for wait or checking a completed conversion, otherwise the last conversion value may be returned which may not be correct. The last value is also returned when the device is in power-down. More...

Protected Member Functions
void	writeInstruction (uint8_t instruction)
	Write instruction to sensor. More...
void	setTimestamp ()
	Save current time + minimum delay before reading next conversion in ms.

Detailed Description

BH1750 class.

Definition at line 53 of file ErriezBH1750.h.

Constructor & Destructor Documentation

BH1750()

BH1750::BH1750 ( uint8_t  addrPinLevel = LOW )

explicit

Constructor.

Parameters

addrPinLevel

Sensor I2C address: ADDR pin = LOW: 0x23 (default) ADDR pin = HIGH: 0x5C

Definition at line 44 of file ErriezBH1750.cpp.

Member Function Documentation

begin()

void BH1750::begin	(	BH1750_Mode_e	mode,
		BH1750_Resolution_e	resolution
	)

Set mode and resolution.

Parameters

mode	ModeContinuous for continues mode Continues conversion requires more power ModeOneTime for one-time conversion mode Set in low power when conversion completed
resolution	Resolution05Lux for high resolution (max 180ms conversion) Resolution1Lux for normal resolution (max 180ms conversion) Resolution4Lux for low resolution (max 24ms conversion, low power)

Definition at line 66 of file ErriezBH1750.cpp.

isConversionCompleted()

bool BH1750::isConversionCompleted

(

)

Wait for completion.

Returns

true: Conversion completed false: Conversion busy

Definition at line 105 of file ErriezBH1750.cpp.

read()

uint16_t BH1750::read

(

)

Read light level asynchronous from sensor The application is responsible for wait or checking a completed conversion, otherwise the last conversion value may be returned which may not be correct. The last value is also returned when the device is in power-down.

Returns

Light level in lux (0..65535) In high resolution, the last digit is the remainder

Definition at line 162 of file ErriezBH1750.cpp.

waitForCompletion()

bool BH1750::waitForCompletion

(

)

Wait for completion.

Returns

true: Conversion completed false: Not initialized, or timeout

Definition at line 125 of file ErriezBH1750.cpp.

writeInstruction()

void BH1750::writeInstruction ( uint8_t  instruction )

protected

Write instruction to sensor.

Parameters

instruction

Sensor instruction

Definition at line 215 of file ErriezBH1750.cpp.

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The documentation for this class was generated from the following files:

• src/ErriezBH1750.h
• src/ErriezBH1750.cpp