#include <EEPROM.h>

const int EEPROM_SIZE = 2048;
const int PAGE_SIZE = 32;
const int CHUNK_SIZE = sizeof(double);
int writeIndex = 0;

void writeData(double data) {
    int currentPos = findCurrentPosition();
    byte dataBytes[CHUNK_SIZE];

    memcpy(dataBytes, &data, sizeof(double));

    EEPROM.put(currentPos, dataBytes);

    // Erase the next page if we're at the last chunk of the current page
    if ((currentPos + CHUNK_SIZE) % PAGE_SIZE == 0) {
        int nextPageStart = (currentPos + CHUNK_SIZE) % EEPROM_SIZE;
        byte emptyPage[PAGE_SIZE] = {0};
        EEPROM.put(nextPageStart, emptyPage);
    }

    EEPROM.commit();
}

int findCurrentPosition() {
    for (int i = 0; i < EEPROM_SIZE; i += CHUNK_SIZE) {
        bool isEmpty = true;
        for (int j = 0; j < CHUNK_SIZE; j++) {
            if (EEPROM.read(i + j) != 0x00) {
                isEmpty = false;
                break;
            }
        }
        if (isEmpty) {
            return i;
        }
    }
    return 0;
}

void writeDataEverySecond() {
    double data = random(0, 100) / 1.0;
    writeData(data);
    writeIndex++;
    delay(1000);
}

void setup() {
    Serial.begin(9600);
    EEPROM.begin(EEPROM_SIZE);
}

void loop() {
    writeDataEverySecond();
}