I have a IR proximity sensor with 4 wires sticking out, I know which the GND and V+ but I cant figure out which the SDA and SCL wires are (even from looking at the datasheet). Any ideas what the Blue and Yellow ones represent, from the schematic / image below and code:
/***************************************************************
Arduino GP2Y0E02B example code
Gets range from GP2Y0E02B and prints it to the serial monitor.
By James Henderson 2014
***************************************************************/
#include <Wire.h>
int distance = 0; // Stores the calculated distance
byte high, low = 0; // High and low byte of distance
int shift = 0; // Value in shift bit register
#define ADDRESS 0x80 >> 1 // Arduino uses 7 bit addressing so we shift address right one bit
#define DISTANCE_REG 0x5E
#define SHIFT 0x35
void setup()
{
// Start comms
Wire.begin();
Serial.begin(19200);
delay(50); // Delay so everything can power up
// Read the sift bit register from the module, used in calculating range
Wire.beginTransmission(ADDRESS);
Wire.write(SHIFT);
Wire.endTransmission();
Wire.requestFrom(ADDRESS, 1);
while(Wire.available() == 0);
shift = Wire.read();
}
void loop()
{
// Request and read the 2 address bytes from the GP2Y0E02B
Wire.beginTransmission(ADDRESS);
Wire.write(DISTANCE_REG);
Wire.endTransmission();
Wire.requestFrom(ADDRESS, 2);
while(Wire.available() < 2);
high = Wire.read();
low = Wire.read();
distance = (high * 16 + low)/16/(int)pow(2,shift); // Calculate the range in CM
Serial.print("Distance is ");
Serial.print(distance);
Serial.println("CM");
delay(50);
}
