/* ___ ___ ___ _ _ ___ ___ ____ ___ ____ * / _ \ /___)/ _ \| | | |/ _ \ / _ \ / ___) _ \| \ *| |_| |___ | |_| | |_| | |_| | |_| ( (__| |_| | | | | * \___/(___/ \___/ \__ |\___/ \___(_)____)___/|_|_|_| * (____/ * Digit Light Sensor Module project * tutorial url: http://osoyoo.com/?p=693 */ #include #include 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); //valÊ®½øÖÆÊä³ö 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(); i++; } Wire.endTransmission(); return i; } void BH1750_Init(int address) { Wire.beginTransmission(address); Wire.write(0x10); Wire.endTransmission(); }