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How to disable internal PU/PD resistor in stm32

Question asked by oulahrir.samir on Oct 19, 2016
Latest reply on Oct 19, 2016 by ForumSTM32.ForumSTM3
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