ESP8266 Community Forum

- Wed Jul 29, 2020 4:41 am #88113 Hello,
I have this simple code:

Code: Select allvoid action() {
  digitalWrite(2, HIGH);
  delay(2000);
  digitalWrite(2, LOW);
  }

void setup() {
  pinMode(2, OUTPUT);
  action();
}

void loop() {
}

Why PIN never goes LOW? I am measuring continuity between D4 and GND.

Thank you.

- Wed Jul 29, 2020 1:14 pm #88118 If I put that function into loop(), PIN is 'blinking' HIGH-LOW over and over again, but i need it to do only one during setup. What did I wrong?

Thanks again.

- Wed Jul 29, 2020 2:02 pm #88120 because its in your loop, instead put it in setup

- Wed Jul 29, 2020 4:09 pm #88121

because its in your loop, instead put it in setup

I did. See my first post. Problem is, pin stays HIGH and doesn't go LOW after 2 seconds, as it should. I have no idea why.