Blink LED Async

• Async - no delay

• Call the routine blink() often in main loop, it will check i 1 second has passed and change led on pin ledPin

void blink() {
  static boolean blinkLed;
  static unsigned long Blinktime;
  const int ledPin = 13;
  const int delayMsec = 1000;
  pinMode(ledPin, OUTPUT);
  if ( millis() > Blinktime ) {
    if (blinkLed) { digitalWrite(ledPin, HIGH); }
    else { digitalWrite(ledPin, LOW); }
    blinkLed = !blinkLed;
    Blinktime = millis() + delayMsec;
    Serial.println();
    Serial.print("Blink.");Serial.print(blinkLed);
    Serial.println();
  }; 
}

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CategoryElectronics