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// I2C Light Sensor |
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// I2C Light Sensor |
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#include <Wire.h> |
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#include <Wire.h> |
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#define address 0x44 // A0 = L |
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#define address 0x44 // A0 = L |
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void setup() |
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void setup() |
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{ |
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{ |
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Wire.begin(); // join i2c bus (address optional for master) |
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Wire.begin(); // join i2c bus (address optional for master) |
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pinMode(3, OUTPUT); // LED pro blikani, aby bylo videt, ze to neco dela |
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pinMode(3, OUTPUT); // LED pro blikani, aby bylo videt, ze to neco dela |
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|
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pinMode(5, OUTPUT); // LED pro blikani, aby bylo videt, ze to neco dela |
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Serial.begin(9600); // Zmerena intenzita osvetleni se bude vypisovat na seriovou linku |
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Serial.begin(9600); // Zmerena intenzita osvetleni se bude vypisovat na seriovou linku |
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} |
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} |
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int data = 0; |
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int data = 0; |
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void loop() |
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void loop() |
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{ |
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{ |
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int lux=0; |
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int lux=0; |
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|
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Serial.print("lux="); |
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Serial.print("lux="); |
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// Setup device |
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// Setup device |
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digitalWrite(5, HIGH); |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.send(0x00); // sends address |
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Wire.send(0x00); // sends address |
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Wire.send(0b11000000); // setup (eye light sensing; measurement range 2 [4000 lx]) |
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Wire.send(0b11000000); // setup (eye light sensing; one time measurement; measurement range 1) |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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|
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// Delay for measurement |
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// Delay for measurement |
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{ |
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long n; |
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for(n=0;n<66000;n++) |
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{ |
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digitalWrite(3, HIGH); // set the LED on |
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digitalWrite(5, LOW); // set the LED off |
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delay(500); |
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// delay(500); |
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digitalWrite(3, LOW); // set the LED off |
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digitalWrite(5, HIGH); // set the LED on |
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delayMicroseconds(100); |
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delay(500); |
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// delay(500); |
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} |
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} |
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// Connect to device and set register address |
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// Connect to device and set register address |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.send(0x00); // sends address |
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Wire.send(0x00); // sends address |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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// Connect to device and request one byte |
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// Connect to device and request one byte |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.requestFrom(address, 1); |
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Wire.requestFrom(address, 1); |
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data = Wire.receive(); |
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data = Wire.receive(); |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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// Serial.print(data, HEX); |
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// Serial.print(data, HEX); |
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|
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|
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// Serial.print(" LSB="); |
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// Serial.print(" LSB="); |
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// Connect to device and set register address |
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// Connect to device and set register address |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.send(0x01); // sends address |
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Wire.send(0x01); // sends address |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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// Connect to device and request one byte |
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// Connect to device and request one byte |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.requestFrom(address, 1); |
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Wire.requestFrom(address, 1); |
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data = Wire.receive(); |
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data = Wire.receive(); |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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// Serial.print(data, HEX); |
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// Serial.print(data, HEX); |
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lux=data; |
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lux=data; |
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// Serial.print(" MSB="); |
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// Serial.print(" MSB="); |
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// Connect to device and set register address |
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// Connect to device and set register address |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.send(0x02); // sends address |
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Wire.send(0x02); // sends address |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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// Connect to device and request one byte |
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// Connect to device and request one byte |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.requestFrom(address, 1); |
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Wire.requestFrom(address, 1); |
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data = Wire.receive(); |
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data = Wire.receive(); |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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// Serial.print(data, HEX); |
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// Serial.print(data, HEX); |
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lux+=data*256; |
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lux+=data*256; |
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/* |
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Serial.print((unsigned)lux, DEC); |
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Serial.print((unsigned)lux, DEC); |
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Serial.print(" luxIR="); |
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Serial.print(" luxIR="); |
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// Setup device |
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// Setup device |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.send(0x00); // sends address |
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Wire.send(0x00); // sends address |
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Wire.send(0b11100000); // setup (eye light sensing; measurement range 2 [4000 lx]) |
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Wire.send(0b11100000); // setup (eye light sensing; measurement range 2 [4000 lx]) |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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// Delay for measurement |
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// Delay for measurement |
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digitalWrite(3, HIGH); // set the LED on |
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digitalWrite(3, HIGH); // set the LED on |
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delay(500); |
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delay(500); |
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digitalWrite(3, LOW); // set the LED off |
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digitalWrite(3, LOW); // set the LED off |
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delay(500); |
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delay(500); |
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// Connect to device and set register address |
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// Connect to device and set register address |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.send(0x00); // sends address |
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Wire.send(0x00); // sends address |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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// Connect to device and request one byte |
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// Connect to device and request one byte |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.requestFrom(address, 1); |
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Wire.requestFrom(address, 1); |
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data = Wire.receive(); |
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data = Wire.receive(); |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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// Serial.print(data, HEX); |
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// Serial.print(data, HEX); |
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// Serial.print(" LSB="); |
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// Serial.print(" LSB="); |
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// Connect to device and set register address |
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// Connect to device and set register address |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.send(0x01); // sends address |
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Wire.send(0x01); // sends address |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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// Connect to device and request one byte |
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// Connect to device and request one byte |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.requestFrom(address, 1); |
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Wire.requestFrom(address, 1); |
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data = Wire.receive(); |
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data = Wire.receive(); |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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// Serial.print(data, HEX); |
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// Serial.print(data, HEX); |
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lux=data; |
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lux=data; |
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// Serial.print(" MSB="); |
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// Serial.print(" MSB="); |
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// Connect to device and set register address |
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// Connect to device and set register address |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.send(0x02); // sends address |
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Wire.send(0x02); // sends address |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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// Connect to device and request one byte |
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// Connect to device and request one byte |
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Wire.beginTransmission(address); |
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Wire.beginTransmission(address); |
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Wire.requestFrom(address, 1); |
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Wire.requestFrom(address, 1); |
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data = Wire.receive(); |
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data = Wire.receive(); |
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Wire.endTransmission(); // stop transmitting |
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Wire.endTransmission(); // stop transmitting |
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// Serial.print(data, HEX); |
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// Serial.print(data, HEX); |
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lux+=data*256; |
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lux+=data*256; |
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*/ |
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Serial.println((unsigned)lux, DEC); |
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Serial.println((unsigned)lux, DEC); |
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} |
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} |
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