State when no settings are made in GPIO pin

[hjuns]

Hello,

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For example, i do not set any settings in PE10 pin. (Reset state)

What state is PE10 pin?

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Will the state of PE10 be floating or Pull down?

(I don't use pull down resistor.)

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Best regards.

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[Danish1]

This is documented in the Reference Manual for your stm32, in the section on GPIO; the final bit of that section where the registers are described.

Many will default to digital input without pull. So you might want to change that for floating pins. Giving a pull is fine, as is changing it to Analog.

[S.Ma]

I think in cubemx there is a check box option for unused gpio state. Just avoid floating digital input which are susceptible to toggle by crosstalk. Some pins like jtag ones have hardwired pull resistors.