PMW for Arduino Nano

PMW_for_Arduino_Nano.ino

unsigned int counter = 0;
unsigned int maxCounter = 255;

void pmw(unsigned int pin, unsigned int power) {
  if (counter > power) {
    digitalWrite(pin, HIGH);
  }
  if (counter < power) {
    digitalWrite(pin, LOW);
  }

  counter++;

  if (counter > maxCounter) {
    counter = 0;
  }
}

void setup() {
  pinMode(17, OUTPUT);

}

void loop() {
  for (int i = 0; i < 255; i++) {
    pmw(17, i);
    delay(10);
  }
  delay(1000);
  for (int i = 0; i < 255; i++) {
    pmw(17, i);
    delay(10);
  }
  delay(1000);
}