#include <EEPROM.h>

void setup() {
    Serial.begin(9600);

    // Write data to EEPROM
    EEPROM.write(0, 123); // Write byte value 123 to address 0

    // Read data from EEPROM
    int value = EEPROM.read(0); // Read byte value from address 0
    Serial.println(value);
}

void loop() {
    // Your loop code
}