usb using in stm32h743zi

[SITARAM]

when i connected usb connector in stm32h743zi,  that time what function working usb connector and if i remove usb connector then what function going to usb connector ,give me that function i remove usb

[AScha.3]

I suppose from your writing, you want to know, how to get the info: usb no more connected ...?

Look/search for : APPLICATION_DISCONNECT , then do ...whatever you want to ->

if (Appli_state == APPLICATION_DISCONNECT) .....

[FBL]

Hello @SITARAM 

You may need to develop more your question. In my understanding, you may have asked about the USB device states : Attached, powered, configured .. Check the user manual UM1734_STM32Cube.book to learn more.