/Modules/Sensors/ISL2902001A/SW/Arduino/i2c_light/i2c_light.pde
3,6 → 3,8
#include <Wire.h>
 
#define address 0x44 // A0 = L
#define SENSE_VIS 0
#define SENSE_IR 1
 
 
void setup()
26,14 → 28,33
}
 
 
int set_light_sensor()
int set_light_sensor(int mode)
{
// 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
int command;
switch (mode)
{
case SENSE_VIS:
{
command=0b11000000; // setup (eye light sensing; one time measurement; measurement range 1)
break;
}
 
case SENSE_IR:
{
command=0b11100000; // setup (eye light sensing; measurement range 2 [4000 lx])
break;
}
default:
return 3;
}
 
// Setup device
Wire.beginTransmission(address);
Wire.send(0x00); // sends address
Wire.send(command); // setup (eye light sensing; one time measurement; measurement range 1)
Wire.endTransmission(); // stop transmitting
}
 
int get_light_measurement()
71,80 → 92,34
{
int lux=0;
 
/* Serial.print("lux=");
 
// Setup device
digitalWrite(5, HIGH);
 
Wire.beginTransmission(address);
Wire.send(0x00); // sends address
Wire.send(0b11000000); // setup (eye light sensing; one time measurement; measurement range 1)
Wire.endTransmission(); // stop transmitting
 
set_light_sensor(SENSE_VIS);
// Delay for measurement
led_blink();
 
digitalWrite(5, LOW); // set the LED off
delay(500);
digitalWrite(5, HIGH); // set the LED on
delay(500);
 
// Connect to device and set register address
Wire.beginTransmission(address);
Wire.send(0x00); // sends address
Wire.send(0x00); // sends address (command register)
Wire.endTransmission(); // stop transmitting
// Connect to device and request one byte
// Connect to device and request command register settings
Wire.beginTransmission(address);
Wire.requestFrom(address, 1);
data = Wire.receive();
Wire.endTransmission(); // stop transmitting
// Serial.print(data, HEX);
Serial.print(data, BIN);
 
// 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("lux=");
Serial.println((unsigned)get_light_measurement(), DEC);
 
// 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);
*/
 
set_light_sensor();
set_light_sensor(SENSE_IR);
// Delay for measurement
led_blink();
// 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
 
// data print
Serial.print(" luxIR=");
Serial.print("luxIR=");
Serial.println((unsigned)get_light_measurement(), DEC);
}