// #include <Arduino.h>

// // Pin for the LED
// const int LED_PIN = 10;

// // Function to turn on the LED
// void turnOnLED(int brightness_0) {
//   // Set the brightness of the LED
//   analogWrite(LED_PIN, brightness_0);

//   // Delay for a short time
//   delay(10);
// }

// // Function to turn off the LED
// void turnOffLED(int brightness_1) {
//   // Turn off the LED
//   analogWrite(LED_PIN, brightness_1);

//   // Delay for a short time
//   delay(10);
// }

// // Main loop
// void setup() {
//   // Set the pin as an output
//   pinMode(LED_PIN, OUTPUT);
// }

// void loop() {
//   // Turn on the LED from 0 to 255
//   for (int i = 0; i < 255; i++) {
//     turnOnLED(i);
//   }

//   // Turn off the LED from 255 to 0
//   for (int i = 255; i > 0; i--) {
//     turnOffLED(i);
//   }
// }
void setup() {
  // put your setup code here, to run once:
  pinMode(10, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  for (int i = 0; i < 255; i++) {
    analogWrite(10, i);
    delayMicroseconds(90000);
  }

  for (int i = 255; i > 0; i--) {
    analogWrite(10, i);
    delayMicroseconds(90000);
  }
}