I have a bootloader which jumps to another application at 0x8040000, the testing code is
It seems that usb not work, interrupt OTG_FS_IRQHandler is not triggered. but other periph devices work.
If I comment out NVIC_SetVectorTable, and don't use bootloader, usb works.
I cannot figure out what's wrong. can anybody give me some advice, and id of official manual to look at.