platformio.ini

[env:arduino_mega]
platform = atmelavr
framework = arduino
board = megaatmega2560

src-main.cpp

#include <Arduino.h>
#include <EEPROM.h>

int address = 0;
byte value;

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

    while (!Serial) {
        ; // Wait for serial port to connect
    }
}

void loop() {
    value = EEPROM.read(address);

    Serial.print(address);
    Serial.print(\t);
    Serial.print(value, DEC);
    Serial.println();

    address = address + 1;

    if (address == 512) {
        address = 0;
    }

    delay(500);
}