/Designs/Spectrograph/SW/test_hw/i2c_light.pde
0,0 → 1,71
// 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()
{
Serial.print("COMMAND=");
 
// Setup device
Wire.beginTransmission(address);
Wire.send(0x00); // sends address
Wire.send(0b11000001); // 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);
 
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);
 
Serial.print("\n");
}