#include <Wire.h>
void setup() {
// put your setup code here, to run once:
Wire.begin();
Serial.begin(9600);
Serial.println("nI2C Scanner");
}
void loop() {
// put your main code here, to run repeatedly:
byte error, address;
int nDevices;
Serial.println("Scanning...");
nDevices = 0;
for(address = 1; address <127; address++ )
{
Wire.beginTransmission(address);
error = Wire.endTransmission();
if(error ==0)
{
Serial.print("i2c device found at addresss 0x");
Serial.print(address,HEX);
nDevices++;
}
else if (error ==4 )
{
Serial.print("Unknow error at address 0x");
Serial.print(address,HEX);
}
}
if (nDevices ==0)
Serial.println("No I2C devices foundn");
delay(5000);
}
i2c.JPG
