STM32F407VET6 heats up

[SGonz.2]

Hello!

Yesterday I was using somesensor with the STM32, and today I realized that the STM32 and the voltage regulator heats up. Also my two alternative STlink connects and disconnects from the USB.

I uploaded an empty project, but it still the same. USB connection is also inestable. What can be the cause of this? Yesterday I didn't have this problems.

[Tesla DeLorean]

>>What can be the cause of this?

Something got electrically damaged.

Finger burning hot would suggest an internal short.

[SGonz.2]

Well, the most recent change I made was connect a common ground and set up a pull-up resistor in UART Rx with:

GPIOA->PUPDR |= GPIO_PUPDR_PU << (2 * 10);

Can this pull-up resistor make my STM32 finger hot?