bonjour,
moi je trouve de grosses différences avec l'exemple de dfrobot pour le bh1750
/*
Sample code for the BH1750 Light sensor
Version 0.1
website:www.DFRobot.com
Connection:
VCC-5v
GND-GND
SCL-SCL(analog pin 5)
SDA-SDA(analog pin 4)
ADD-NC
*/
#include <Wire.h> //BH1750 IIC Mode
#include <math.h>
int BH1750address = 0x23; //setting i2c address
byte buff[2];
void setup()
{
Wire.begin();
Serial.begin(57600);//init Serail band rate
}
void loop()
{
int i;
uint16_t val=0;
BH1750_Init(BH1750address);
delay(200);
if(2==BH1750_Read(BH1750address))
{
val=((buff[0]<<8)|buff[1])/1.2;
Serial.print(val,DEC);
Serial.println("[lx]");
}
delay(150);
}
int BH1750_Read(int address) //
{
int i=0;
Wire.beginTransmission(address);
Wire.requestFrom(address, 2);
while(Wire.available()) //
{
buff[i] = Wire.receive(); // receive one byte AU LIEU DE buff[i] = Wire.read();
i++;
}
Wire.endTransmission();
return i;
}
void BH1750_Init(int address)
{
Wire.beginTransmission(address);
Wire.send(0x10);//1lx reolution 120ms AU LIEU DE Wire.write(0x10);
Wire.endTransmission();
}