#define LED_PIN 3       // LED connected to GPIO 3
#define BUTTON_PIN 2    // Button connected to GPIO 2
#define DELAY_MIN 200    // Minimum delay in milliseconds
#define DELAY_MAX 1000   // Maximum delay in milliseconds

int ledState = LOW;          // Initial LED state
unsigned long previousMillis = 0;  // Variable for time tracking
int delayTime = DELAY_MIN;  // Initial delay time

void setup() {
  pinMode(LED_PIN, OUTPUT);       // Set LED pin as output
  pinMode(BUTTON_PIN, INPUT_PULLUP); // Set button pin as input with pull-up resistor
}

void loop() {
  unsigned long currentMillis = millis();  // Get current time

  // If the button is pressed, change the delay time
  if (digitalRead(BUTTON_PIN) == LOW) {
    delayTime = DELAY_MAX;  // Set delay to maximum when button is pressed
  } else {
    delayTime = DELAY_MIN;  // Set delay to minimum when button is not pressed
  }

  // Blink the LED at the set delay time
  if (currentMillis - previousMillis >= delayTime) {
    previousMillis = currentMillis;  // Save the current time
    ledState = !ledState;  // Toggle LED state
    digitalWrite(LED_PIN, ledState);  // Set LED state
  }
}