EEPROM.get, get

This function will retrieve an object from the EEPROM. Use the same type of object you used in the put call.

EEPROM.get(int address, object)

address is the start address (int) of the EEPROM locations to read. It must be a value between 0 and EEPROM.length()-1

object is the object data that would be read. The number of bytes read is automatically determined from the type of object.

// Read a value (2 bytes in this case) from EEPROM addres
int addr = 10;
uint16_t value;
EEPROM.get(addr, value);
if(value == 0xFFFF) {
  // EEPROM was empty -> initialize value
  value = 25;

// Read an object from the EEPROM addres
addr = 20;
struct MyObject {
  uint8_t version;
  float field1;
  uint16_t field2;
  char name[10];
MyObject myObj;
EEPROM.get(addr, myObj);
if(myObj.version != 0) {
  // EEPROM was empty -> initialize myObj
  MyObject defaultObj = { 0, 12.34f, 25, "Test!" };
  myObj = defaultObj;

The default value of bytes in the EEPROM is 255 (hexadecimal 0xFF) so reading an object on a new device will return an object filled with 0xFF. One trick to deal with default data is to include a version field that you can check to see if there was valid data written in the EEPROM.