ESP32S3 GPIO26 turns high during boot

[vmastellone]

During ESP boot, GPIO26 turns briefly high.

This behavior interferes with the peripheral connected to that pin.

Is there any way to prevent the pin from turning high.

[LJH]

Maybe you could add a strong pull-down resistor since there is a weak pull-up inside GPIO26.

[Jonathan2892]

Hey,

you can look up all the pin-states at RESET in the technical reference: https://www.espressif.com/sites/default ... ual_en.pdf
In table 6-3 there is a column called RST. Below the table is the explanation what the numbers in that column mean.
Maybe that helps to choose which pin to use for your peripherals.

Best, J