| 0,0 → 1,130 |
|---|
| // I2C Light Sensor |
| |
| #include <Wire.h> |
| |
| #define address 0x44 // A0 = L |
| |
| void setup() |
| { |
| Wire.begin(); // join i2c bus (address optional for master) |
| pinMode(3, OUTPUT); // LED pro blikani, aby bylo videt, ze to neco dela |
| Serial.begin(9600); // Zmerena intenzita osvetleni se bude vypisovat na seriovou linku |
| } |
| |
| int data = 0; |
| |
| void loop() |
| { |
| int lux=0; |
| |
| Serial.print("lux="); |
| |
| // Setup device |
| Wire.beginTransmission(address); |
| Wire.send(0x00); // sends address |
| Wire.send(0b11000000); // setup (eye light sensing; measurement range 2 [4000 lx]) |
| Wire.endTransmission(); // stop transmitting |
| |
| // Delay for measurement |
| digitalWrite(3, HIGH); // set the LED on |
| delay(500); |
| digitalWrite(3, LOW); // set the LED off |
| delay(500); |
| |
| |
| // Connect to device and set register address |
| Wire.beginTransmission(address); |
| Wire.send(0x00); // sends address |
| Wire.endTransmission(); // stop transmitting |
| // Connect to device and request one byte |
| Wire.beginTransmission(address); |
| Wire.requestFrom(address, 1); |
| data = Wire.receive(); |
| Wire.endTransmission(); // stop transmitting |
| // Serial.print(data, HEX); |
| |
| // Serial.print(" LSB="); |
| // Connect to device and set register address |
| Wire.beginTransmission(address); |
| Wire.send(0x01); // sends address |
| Wire.endTransmission(); // stop transmitting |
| // Connect to device and request one byte |
| Wire.beginTransmission(address); |
| Wire.requestFrom(address, 1); |
| data = Wire.receive(); |
| Wire.endTransmission(); // stop transmitting |
| // Serial.print(data, HEX); |
| lux=data; |
| |
| // Serial.print(" MSB="); |
| // Connect to device and set register address |
| Wire.beginTransmission(address); |
| Wire.send(0x02); // sends address |
| Wire.endTransmission(); // stop transmitting |
| // Connect to device and request one byte |
| Wire.beginTransmission(address); |
| Wire.requestFrom(address, 1); |
| data = Wire.receive(); |
| Wire.endTransmission(); // stop transmitting |
| // Serial.print(data, HEX); |
| lux+=data*256; |
| |
| Serial.print((unsigned)lux, DEC); |
| |
| Serial.print(" luxIR="); |
| |
| // Setup device |
| Wire.beginTransmission(address); |
| Wire.send(0x00); // sends address |
| Wire.send(0b11100000); // setup (eye light sensing; measurement range 2 [4000 lx]) |
| Wire.endTransmission(); // stop transmitting |
| |
| // Delay for measurement |
| digitalWrite(3, HIGH); // set the LED on |
| delay(500); |
| digitalWrite(3, LOW); // set the LED off |
| delay(500); |
| |
| |
| // Connect to device and set register address |
| Wire.beginTransmission(address); |
| Wire.send(0x00); // sends address |
| Wire.endTransmission(); // stop transmitting |
| // Connect to device and request one byte |
| Wire.beginTransmission(address); |
| Wire.requestFrom(address, 1); |
| data = Wire.receive(); |
| Wire.endTransmission(); // stop transmitting |
| // Serial.print(data, HEX); |
| |
| // Serial.print(" LSB="); |
| // Connect to device and set register address |
| Wire.beginTransmission(address); |
| Wire.send(0x01); // sends address |
| Wire.endTransmission(); // stop transmitting |
| // Connect to device and request one byte |
| Wire.beginTransmission(address); |
| Wire.requestFrom(address, 1); |
| data = Wire.receive(); |
| Wire.endTransmission(); // stop transmitting |
| // Serial.print(data, HEX); |
| lux=data; |
| |
| // Serial.print(" MSB="); |
| // Connect to device and set register address |
| Wire.beginTransmission(address); |
| Wire.send(0x02); // sends address |
| Wire.endTransmission(); // stop transmitting |
| // Connect to device and request one byte |
| Wire.beginTransmission(address); |
| Wire.requestFrom(address, 1); |
| data = Wire.receive(); |
| Wire.endTransmission(); // stop transmitting |
| // Serial.print(data, HEX); |
| lux+=data*256; |
| |
| Serial.println((unsigned)lux, DEC); |
| |
| } |
| |
| |
