#include <Arduino.h>

// Include the correct library for OLED display (U8g2 for Wokwi)
#include <u8g2.h>

#define sensorPin 34 // Analog pin for voltage sensor

const float maxVoltage = 28.8;
const float minVoltage = 23.9;

float adc_voltage = 0.0;
float in_voltage = 0.0;
float R1 = 30000.0 + 412912.91;
float R2 = 7500.0;
float ref_voltage = 3.3; // ESP-Wroom-32 ADC reference voltage

int adc_value = 0;

u8g2 display(128, 64, U8X8_SCA, U8X8_SCL); // Replace pins if needed

class RGBLed {
public:
  RGBLed(int redPin, int greenPin, int bluePin) :
    _redpin(redPin), _greenpin(greenPin), _bluepin(bluePin) {}

  void write(float red, float green, float blue) {
    float mappedRed = map(red, 0.0, 1.0, 0.0, 255);
    float mappedGreen = map(green, 0.0, 1.0, 0.0, 255);
    float mappedBlue = map(blue, 0.0, 1.0, 0.0, 255);

    analogWrite(_redpin, mappedRed);
    analogWrite(_greenpin, mappedGreen);
    analogWrite(_bluepin, mappedBlue);
  }

private:
  int _redpin;
  int _greenpin;
  int _bluepin;
};

// Replace with actual ESP32 GPIO pins for RGB LED connections
RGBLed myRGBled(18, 19, 23); 

void setup() {
  Serial.begin(9600);
  
  // Initialize U8g2 display
  delay(1000);;
  display.setFont(u8g2_font_proportional_4x6); // Set font
  display.clearDisplay();

  display.setCursor(0, 0);
  display.println("Voltage:");
  // Update display (U8g2 specific function)
  display.sendBuffer();
}

void loop() {
  adc_value = analogRead(sensorPin);
  adc_voltage = (adc_value * ref_voltage) / 4095.0; // ESP32 ADC has 12 bits
  in_voltage = adc_voltage / (R2 / (R1 + R2));

  float percentage = map(in_voltage, minVoltage, maxVoltage, 0, 100);

  // ... rest of your code for RGB LED control

  display.setCursor(0, 10);
  display.println(in_voltage, 2);  // Display voltage with 2 decimal places
  display.sendBuffer(); // Update display

  delay(1000);
}