Code Requested

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

// Pin definitions for SSD1306 OLED display connections
// OLED display pin labels: VCC, GND, D0, D1, RES, DC, CS
// ESP32 DEVKIT V1 connections:
#define OLED_CLK    18  // D0 - GPIO18 (VSPI CLK)
#define OLED_MOSI   23  // D1 - GPIO23 (VSPI MOSI)
#define OLED_RESET  17  // RES - GPIO17
#define OLED_DC     5   // DC - GPIO5
#define OLED_CS     19  // CS - GPIO19 (VSPI CS0)

// Display dimensions (128x64 is common for SSD1306 OLEDs)
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

// Initialize the display
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT,
  OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);

void setup() {
  Serial.begin(115200);
  Serial.println("ESP32 OLED Test");

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }

  // Clear the buffer
  display.clearDisplay();

  // Show initial display buffer contents on the screen
  display.display();
  delay(2000); // Pause for 2 seconds

  // Display text
  display.clearDisplay();
  display.setTextSize(1);      // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE); // Draw white text
  display.setCursor(0, 0);     // Start at top-left corner
  display.println(F("Hello, ESP32!"));
  display.println(F("Connected to OLED"));
  display.println();
  display.print(F("OLED is working!"));
  display.display();
}

void loop() {
  // Your main code here, to run repeatedly
  // This example just keeps the initial text on the display
}