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

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
Adafruit_SSD1306 oled2(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
Adafruit_SSD1306 oled3(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  if(!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)){
    Serial.println(F("Khoi tao SSD1306 OLED that bai"));
    while(1);
  }

  if(!oled2.begin(SSD1306_SWITCHCAPVCC, 0x3D)){
    Serial.println(F("Khoi tao SSD1306 OLED that bai"));
    while(1);
  }

  if(!oled3.begin(SSD1306_SWITCHCAPVCC, 0x3E)){
    Serial.println(F("Khoi tao SSD1306 OLED that bai"));
    while(1);
  }
  delay(2000);
  oled.clearDisplay();
  oled.setTextSize(1);
  oled.setTextColor(WHITE);
  oled.setCursor(0,2);
  oled.println("OLED1");
  oled.display();

  oled2.clearDisplay();
  oled2.setTextSize(1);
  oled2.setTextColor(WHITE);
  oled2.setCursor(0,2);
  oled2.println("OLED2");
  oled2.display();

  oled3.clearDisplay();
  oled3.setTextSize(1);
  oled3.setTextColor(WHITE);
  oled3.setCursor(0,2);
  oled3.println("OLED3");
  oled3.display();
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}