#include <Arduino.h>

const int ledPin = 13;
const int initialDelay = 2000; // 2 seconds in milliseconds
const int finalDelay = 100; // 0.1 seconds in milliseconds
const int delayDecrement = 250; // Milliseconds to decrease delay each iteration

void setup() {
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600); // Initialize serial communication at 9600 baud
}

void loop() {
  int currentDelay = initialDelay;

  // Decrease delay until finalDelay
  while (currentDelay >= finalDelay) {
    digitalWrite(ledPin, HIGH);
    delay(currentDelay);
    digitalWrite(ledPin, LOW);
    delay(currentDelay);

    Serial.print("Current delay: ");
    Serial.println(currentDelay);

    currentDelay -= delayDecrement;
  }

  // Blink 100 times at finalDelay
  for (int i = 0; i < 100; i++) {
    digitalWrite(ledPin, HIGH);
    delay(finalDelay);
    digitalWrite(ledPin, LOW);
    delay(finalDelay);

    Serial.print("Blinking at final delay, count: ");
    Serial.println(i + 1);
  }

  // Increase delay back to initialDelay
  while (currentDelay <= initialDelay) {
    digitalWrite(ledPin, HIGH);
    delay(currentDelay);
    digitalWrite(ledPin, LOW);
    delay(currentDelay);

    Serial.print("Current delay: ");
    Serial.println(currentDelay);

    currentDelay += delayDecrement;
  }
}