Mauricio Donatti / BH1750

Digital 16bit Serial Output Type Ambient Light Sensor IC by ROHM, Ambient light sensor (Illuminance to digital converter). Forked from Kenji Arai BH1750, minor changes.

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BH1750 Class Reference
Public Member Functions

BH1750 Class Reference

Interface for Luminosity sensor, BH1750. More...

#include <BH1750.h>

Public Member Functions

 BH1750 (PinName p_sda, PinName p_scl)
 Configure data pin.
 BH1750 (I2C &p_i2c)
 Configure data pin (with other devices on I2C line)
float lux (void)
 Get Illuminance, unit of Lux.
void set_high_resolution_continuous (uint8_t parameter)
 Set sensor to high resolution mode.
void set_high_resolution2_continuous (uint8_t parameter)
 Set sensor to high resolution mode.
void set_low_resolution_continuous (uint8_t parameter)
 Set I2C clock frequency.
void power_up (void)
 Power Up/Down.

Detailed Description

Interface for Luminosity sensor, BH1750. 

#include "mbed.h"
#include "BH1750.h"
// I2C Communication
BH1750      lum(dp5,dp27);    // BH1750 SDA, SCL
//If you connected I2C line not only this device but also other devices,
//you need to declare following method.
//I2C         i2c(dp5,dp27);    // SDA, SCL
//BH1750      lum(i2c);         // BH1750 SDA, SCL (Data available every 120mSec)

int main() {
   lum.set_high_resolution(SENS_1R00);
   //or
   //lum.set_high_resolution_2(SENS_1R00);  
   
   while(true){
     printf("Illuminance: %+7.2f [Lux]\r\n", lum.lux());
     wait(1.0);
   }
}
//

Definition at line 77 of file BH1750.h.

Constructor & Destructor Documentation

BH1750 ( PinName  p_sda,
PinName  p_scl 
)

Configure data pin.

Parameters:
dataSDA and SCL pins

Definition at line 25 of file BH1750.cpp.

BH1750 ( I2C &  p_i2c )

Configure data pin (with other devices on I2C line)

Parameters:
I2Cprevious definition

Definition at line 39 of file BH1750.cpp.

Member Function Documentation

float lux ( void   )

Get Illuminance, unit of Lux.

Parameters:
none
Returns:
Lux

Definition at line 54 of file BH1750.cpp.

void power_up ( void   )

Power Up/Down.

Parameters:
none
Returns:
none

Definition at line 209 of file BH1750.cpp.

void set_high_resolution2_continuous ( uint8_t  parameter )

Set sensor to high resolution mode.

Parameters:
sensitivityparameter
Returns:
none

Definition at line 172 of file BH1750.cpp.

void set_high_resolution_continuous ( uint8_t  parameter )

Set sensor to high resolution mode.

Parameters:
sensitivityparameter
Returns:
none

Definition at line 154 of file BH1750.cpp.

void set_low_resolution_continuous ( uint8_t  parameter )

Set I2C clock frequency.

Parameters:
freq.
Returns:
none

Definition at line 190 of file BH1750.cpp.

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