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

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

void setup() {
  Serial.begin(9600);

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }

  display.display();
  delay(2000);
  display.clearDisplay();
}

void loop() {
  // Read battery level (0-100)
  int batteryLevel = analogRead(A0); // Connect your battery sensor to A0

  // Map the analog reading to a percentage value
  int batteryPercent = map(batteryLevel, 0, 4095, 0, 100);//12 bit ADC

  // Display battery percentage
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.print("Battery Level:");
  display.setTextSize(2);
  display.setCursor(0, 16);
  display.print(batteryPercent);
  display.print("%");
  display.display();

  delay(1000); // You can adjust the delay according to your needs
}