#include "Wire.h"
void setup() {
Serial.begin(115200);
Wire.begin();
}
void loop() {
byte error, address;
int nDevices = 0;
delay(5000);
Serial.println("Scanning for I2C devices ...");
for(address = 0x01; address < 0x7f; address++){
Wire.beginTransmission(address);
error = Wire.endTransmission();
if (error == 0){
Serial.printf("I2C device found at address 0x%02X\n", address);
nDevices++;
} else if(error != 2){
Serial.printf("Error %d at address 0x%02X\n", error, address);
}
}
if (nDevices == 0){
Serial.println("No I2C devices found");
}
}
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