How to disable internal PU/PD resistor in stm32

Posted on October 19, 2016 at 16:38

Hi everybody,

I just connected one resistor in pin PA3 of stm32f091 to read value of a voltage divider.

But when i connected this, my tension is down.

I know there are pull up and pull down internal resistor about 40 kOhms in each pin, but in output mode ou input mode, the result is the same.

Any idea ?

The register GPIOC->PUPDR is setting correctly.

Thank you

This topic has been closed for replies.

Visitor II

Posted on October 19, 2016 at 17:31

Hello,

Refer to the reference manual

for more details and clarification about this topic in the '' General-purpose I/Os (GPIO) '' section.

Regards

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