#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>
#include <SPI.h>

// Pin definitions for the TFT display
#define TFT_CS    15
#define TFT_RST   4
#define TFT_DC    2

// Pin definition for the potentiometer
#define POT_PIN   34

// Create an instance of the display
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);

void setup() {
  // Initialize the serial monitor for debugging
  Serial.begin(115200);

  // Initialize the display
  tft.begin();
  tft.setRotation(1);
  tft.fillScreen(ILI9341_BLACK);

  // Initialize the potentiometer pin
  pinMode(POT_PIN, INPUT);
}

void loop() {
  // Read the value from the potentiometer
  int potValue = analogRead(POT_PIN);

  // Map the potentiometer value (0-4095) to the display width
  int barWidth = map(potValue, 0, 4095, 0, tft.width());

  // Clear the display
  tft.fillScreen(ILI9341_BLACK);

  // Draw the bar graph
  tft.fillRect(0, tft.height()/2 - 10, barWidth, 20, ILI9341_GREEN);

  // Display the potentiometer value as text
  tft.setCursor(10, 10);
  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(2);
  tft.print("Pot Value: ");
  tft.println(potValue);

  // Add a small delay
  delay(100);
}