#include <TM1637Display.h>

// Define the pins for TM1637 (CLK and DIO)
#define CLK 2
#define DIO 3
#define MAX_POTI_VAL 1023
#define max_fuel_content_in_liter 100

// Create a TM1637Display object
TM1637Display display(CLK, DIO);

// Define the analog input pin
#define POTENTIOMETER_PIN A0

void setup() {
  // Initialize the display
  display.setBrightness(0x02); // Set brightness (adjust as needed)
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(9, OUTPUT);
}

void loop() {
  // Read the potentiometer value
  double potValue = analogRead(POTENTIOMETER_PIN);

  // Display the potentiometer value on the TM1637 display
  double poti_percentage = (potValue/MAX_POTI_VAL);


  if (poti_percentage > 0.75) {
    digitalWrite(12, HIGH);
    digitalWrite(11, HIGH);
    digitalWrite(10, HIGH);
    digitalWrite(9, HIGH);
  } 
  else if (poti_percentage > 0.5) {
    digitalWrite(12, HIGH);
    digitalWrite(11, HIGH);
    digitalWrite(10, HIGH);
    digitalWrite(9, LOW);
  }
  else if (poti_percentage > 0.25) {
    digitalWrite(12, HIGH);
    digitalWrite(11, HIGH);
    digitalWrite(10, LOW);
    digitalWrite(9, LOW);
  }
    else if (poti_percentage > 0.1) {
    digitalWrite(12, HIGH);
    digitalWrite(11, LOW);
    digitalWrite(10, LOW);
    digitalWrite(9, LOW);
  }
  else {
    digitalWrite(12, LOW);
    digitalWrite(11, LOW);
    digitalWrite(10, LOW);
    digitalWrite(9, LOW);
  }
  
  display.showNumberDec(poti_percentage*max_fuel_content_in_liter);
  // Optional delay to control update rate
  delay(100); // Adjust as needed
}