#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <EEPROM.h>
#include <Fonts/FreeMonoBold9pt7b.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

// Define the address of the EEPROM component
#define EEPROM_ADDR 0x50

void setup() {
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.display();
  delay(2000);
  display.clearDisplay();

  // font size to 1 and font to FreeMonoBold9pt7b
  display.setTextSize(0.2);
  display.setFont(&FreeMonoBold9pt7b);

  // text color to white
  display.setTextColor(SSD1306_WHITE);

  // Write student ID to EEPROM
  char studentID[] = "103798625";
  for (int i = 0; i < sizeof(studentID); i++) {
    EEPROM.write(i, studentID[i]);
  }
  EEPROM.write(sizeof(studentID), '\0'); // Null-terminate the string

  // Display student ID from EEPROM on OLED
  display.print("\nStudent ID:\n");
  for (int i = 0; i < sizeof(studentID); i++) {
    char c = EEPROM.read(i);
    if (c == '\0') break;
    display.print(c);
  }
  display.display();
  delay(1000);
}

void loop() {
  display.startscrollleft(0x00, 0x0F); // Scroll display to the left
  delay(1000);
}