Search found 3 matches

by njneer
Mon Sep 21, 2020 10:20 pm
Forum: ESP32 Arduino
Topic: Internal Pull-ups don't work on GPIO25 or GPIO32
Replies: 6
Views: 15870

Re: Internal Pull-ups don't work on GPIO25 or GPIO32

analogRead attaches the pin to ADC channel, which remaps it off the PU circuit. If you set the mode back to INPUT_PULLUP after the read, it should work as expected. This did the trick! Thanks @Ibernstone! Quick recap and some SEO terms for anyone googling this: if the INPUT_PULLUP or INPUT_PULLDOWN...
by njneer
Mon Sep 21, 2020 4:28 pm
Forum: ESP32 Arduino
Topic: Internal Pull-ups don't work on GPIO25 or GPIO32
Replies: 6
Views: 15870

Re: Internal Pull-ups don't work on GPIO25 or GPIO32

I will give this a shot now and report back, thanks!
by njneer
Sun Sep 20, 2020 11:23 pm
Forum: ESP32 Arduino
Topic: Internal Pull-ups don't work on GPIO25 or GPIO32
Replies: 6
Views: 15870

Internal Pull-ups don't work on GPIO25 or GPIO32

I'm programming a custom ESP32 board using Arduino where GPIO25 and GPIO32 are connected to pogo pins via <10mm traces and to nothing else. The goal is to poll for a short between them as part of an alignment procedure - pretty straightforward. The issue is, pinMode(X, INPUT_PULLUP) does not actully...