Output Power-on Glitches

chm01938
Posts: 2
Joined: Tue Oct 13, 2015 11:28 pm

Output Power-on Glitches

Postby chm01938 » Tue Jul 05, 2016 8:42 am

Upon powering on, the GPIO outputs momentarily pulse high. Is there a way to prevent this from happening. Getting a lot of inrush current from the circuitry the GPIO outputs are connected to.....Thanks

ESP_Greg

Re: Output Power-on Glitches

Postby ESP_Greg » Tue Jul 05, 2016 3:12 pm

Hi, most of the GPIO have internal pull-up resistor. But they should be input status. What you mean by "inrush current"?

chm01938
Posts: 2
Joined: Tue Oct 13, 2015 11:28 pm

Re: Output Power-on Glitches

Postby chm01938 » Wed Jul 06, 2016 5:27 am

Since the gpio16 and gpio14 momentarily pulse-high they turn-on the connecting circuitry instantaneously causing an inrush of current. If at power-on the two bits are configured as default inputs, I do not understand how this can be happening. Any ideas
greatly appreciated.

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