ESP8266 Community Forum

- Wed Sep 06, 2017 3:45 pm #69781 Martin - agreed. I thought you were suggesting that it was 'dangerous' to do this immediately.
I suggest the OP uses a polling loop in setup() to check the button.
Ian

- Wed Sep 06, 2017 4:03 pm #69783 Right ! I didn't mean to force a delay(5000), but a polling loop using millis() on the GPIO and abort it after that 1 or 5 secs is an excellent solution.

- Thu Sep 07, 2017 5:21 am #69792

If the GPIO0 is read right at the beginning of setup(), there not much chance that a human can press the button that fast, so it is easier to add a delay, if 5 seconds is too much for you, at least make it 1 seconds.

Ok thank you that is good information. Appreciate the time.