Arduino for STM32

Yes, the power supply section. Except from the fact that I can't be sure if SB1 is on or off (not too familiar with electronics in general and STM32 in particular), it seems like it's not bridged though, so I think it's off. all the rest of the instructions are done as mentioned in this doc. Still -...

I'm trying to run a basic blinking project from Arduino over my STM32 Nucleo-32 L432KC board, and it seems like the code only runs when powered by USB or by batteries that are connected to the VIN pin, but when it's powered by batteries that are connected to the 5V or 3V3 pin, the LED2 is on, but th...