User Activity

Hi, I'm trying to get an alarm signal on an external contact (PC13). In the program everything works as it should and the interrupt occurs, but nothing changes on the external contact. What did I miss?              
Hello, my device will work in a car and I need to arrange power for the RTC. Is the H750 processor used, is the diagram in the screenshot suitable or are there better technological solutions?
Hi, I'm using STM32H750-DK as an example to build my board. And I don’t know for what purpose resistors R121 - R158 are installed. Can I directly connect these pins to ground?