#include <Wire.h>
#include "AT24CXX.h"

#define EEPROM_I2C_ADDRESS 0x50
// Define the size of your EEPROM chip in KiB (Kilobytes)
// e.g., 32 for AT24C32, 256 for AT24C256
#define EEPROM_SIZE_KB 32 

// Initialize the library object
// The constructor usually takes the I2C address and the size in KB
AT24Cxx eep(EEPROM_I2C_ADDRESS, EEPROM_SIZE_KB);

void setup() {
  Serial.begin(9600);
  while (!Serial); // Wait for Serial Monitor to open

  Wire.begin(); // Start the I2C bus
  
  Serial.println("\nAT24Cxx EEPROM Basic Test");

  // --- Writing data ---
  int address = 0; // Start address for writing
  byte dataToWrite = 42; // The data byte to store (value 0-255)

  Serial.print("Writing value ");
  Serial.print(dataToWrite);
  Serial.print(" to address ");
  Serial.print(address);
  Serial.println("...");

  // Use the library's write function (might be writeByte or similar depending on the specific library version)
  // Check your specific library documentation for the exact function name if 'write' doesn't work.
  // The common functions are `write` for bytes and `put`/`get` for larger types.
  eep.write(address, dataToWrite);
  
  delay(10); // A small delay is required after each write operation for the EEPROM to complete the cycle

  // --- Reading data ---
  byte dataRead = eep.read(address); // Read the byte from the same address

  Serial.print("Reading from address ");
  Serial.print(address);
  Serial.print(": ");
  Serial.println(dataRead);

  // Verification
  if (dataRead == dataToWrite) {
    Serial.println("Data successfully written and read back!");
  } else {
    Serial.println("Error: Data mismatch!");
  }
}

void loop() {
  // Nothing needed in the loop for this simple example
}