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- {
- // here is where you'd put code that needs to be running all the time.
- // check to see if it's time to blink the LED; that is, if the
- // difference between the current time and last time you blinked
- // the LED is bigger than the interval at which you want to
- // blink the LED.
- unsigned long currentMillis = millis();
- if(currentMillis - previousMillis > interval) {
- // save the last time you blinked the LED
- previousMillis = currentMillis;
- // if the LED is off turn it on and vice-versa:
- if (ledState == LOW)
- ledState = HIGH;
- else
- ledState = LOW;
- // set the LED with the ledState of the variable:
- digitalWrite(ledPin, ledState);
- }
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