/*
   Forum: https://forum.arduino.cc/t/button-and-potentiometer-detection-together/1417103
   Wokwi: https://wokwi.com/projects/449056937416410113

   Original code taken from the forum   
   
   2025/11/30
   ec2021

*/

// Code for Arduino Uno

// Pin definitions
const int POT_PIN = A0;        // Potentiometer connected to analog pin A0
const int BUTTON_PIN = 2;      // Button connected to digital pin 2

// Variables
int potValue = 0;              // Variable to store potentiometer value
int buttonState = 0;           // Variable to store button state
int lastButtonState = 0;       // Previous button state for detecting changes

// Timing variables
unsigned long lastPotRead = 0;
const int POT_READ_INTERVAL = 50;  // Read potentiometer every 50ms

void setup() {
  // Initialize serial communication
  Serial.begin(9600);
  
  // Set button pin as input with internal pull-up resistor
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  
  Serial.println("Arduino Ready!");
  Serial.println("Reading potentiometer and button...");
}

void loop() {
  // CHECK BUTTON FIRST (fast and frequent)
  buttonState = digitalRead(BUTTON_PIN);
  
  // Display button state immediately when it changes
  if (buttonState != lastButtonState) {
    if (buttonState == LOW) {
      Serial.println(">>> BUTTON PRESSED! <<<");
    } else {
      Serial.println(">>> BUTTON RELEASED <<<");
    }
    lastButtonState = buttonState;
  }
  
  // Read potentiometer LESS FREQUENTLY (analogRead is slow!)
  unsigned long currentTime = millis();
  if (currentTime - lastPotRead >= POT_READ_INTERVAL) {
    potValue = analogRead(POT_PIN);
    
    Serial.print("Pot Value: ");
    Serial.print(potValue);
    Serial.print(" | Button: ");
    Serial.println(buttonState == LOW ? "PRESSED" : "NOT PRESSED");
    
    lastPotRead = currentTime;
  }
  
  // NO DELAY - this was blocking button detection!
}

// btw if the comments are a bit weird its because at first i was trying to fix this with ai, didnt work