Posted on September 28, 2014 at 11:46STM32f407 + usb3300, work in host mode, some high speed usb devices work very well. However, I try for some days to detect vbus over-current, but failed. Has anybody implement it successfully?
My hardware logic is in attached file. My software is as followings.
globle reigster GUSBCFG=0x21301410, the lower 16bits is hw default, the higher 16 bits meaning:
force host mode,
indicator pass through,
external vbus indicator
external vbus driver,
port status is 0x00001005, and interrupt is always enabled.
I try all measures, even short-circult vbus to ground to try to make a over-current condition, but nothing happens in usb core register and software interrpt.
#usb-host
