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GY-302 BH1750 光强度模块-Arduino 库

2017-04-05 23:05 302 查看

GY-302 BH1750 光强度模块-Arduino库,亲测能用

#include <Wire.h> //IIC
#include <math.h>
int BH1750address = 0x23;
byte buff[2];

void setup()
{
Wire.begin();
Serial.begin(9600);
}

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.read();  // receive one byte
i++;
}
Wire.endTransmission();
return i;
}

void BH1750_Init(int address)
{
Wire.beginTransmission(address);
Wire.write(0x10);//1lx reolution 120ms
Wire.endTransmission();
}
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