pin 20 on ESP32 S3 goes high after start

Mastino
Posts: 1
Joined: Tue Aug 08, 2023 3:01 pm

pin 20 on ESP32 S3 goes high after start

Postby Mastino » Tue Aug 08, 2023 3:18 pm

Hello Friends,
I have little problem with pin 20 on ESP32 S3.
After start it is always goes high.
Is it because the pin 20 on ESP32 S3 has USB-JTAG?
Will it help if I burn the efuse with espefuse.py tool?
Thanks!

P.S.
In my case relay is connected on pin 20, so even when I set it to LOW in setup loop, it still makes click.

username
Posts: 533
Joined: Thu May 03, 2018 1:18 pm

Re: pin 20 on ESP32 S3 goes high after start

Postby username » Sat Aug 12, 2023 11:24 am

If you do this and its still high, something else is going on.

gpio_reset_pin(GPIO_NUM_20); gpio_set_direction(GPIO_NUM_20, GPIO_MODE_OUTPUT);gpio_set_level(GPIO_NUM_20, LOW);

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mbratch
Posts: 303
Joined: Fri Jun 11, 2021 1:51 pm

Re: pin 20 on ESP32 S3 goes high after start

Postby mbratch » Fri Sep 08, 2023 4:54 pm

Do you really mean pin 20 or GPIO 20? Pin 20 is GPIO 10 on the ESP32S3.

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